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Current File : /usr/share/doc/qemu-kvm/qemu-qmp-ref.txt
QEMU QMP reference
1 API Reference
  1.1 Introduction
  1.2 Stability Considerations
  1.3 QMP errors
  1.4 Common data types
  1.5 Socket data types
  1.6 VM run state
  1.7 Cryptography
  1.8 Block devices
    1.8.1 Block core (VM unrelated)
    1.8.2 Background jobs
    1.8.3 Additional block stuff (VM related)
  1.9 Character devices
  1.10 Dump guest memory
  1.11 Net devices
  1.12 RDMA device
  1.13 Rocker switch device
  1.14 TPM (trusted platform module) devices
  1.15 Remote desktop
    1.15.1 Spice
    1.15.2 VNC
  1.16 Input
  1.17 Migration
  1.18 Transactions
  1.19 Tracing
  1.20 QMP introspection
  1.21 QEMU Object Model (QOM)
  1.22 Device infrastructure (qdev)
  1.23 Machines
  1.24 Miscellanea
Commands and Events Index
Data Types Index
QEMU QMP reference
******************

1 API Reference
***************

1.1 Introduction
================

This document describes all commands currently supported by QMP.

Most of the time their usage is exactly the same as in the user Monitor,
this means that any other document which also describe commands (the
manpage, QEMU's manual, etc) can and should be consulted.

QMP has two types of commands: regular and query commands.  Regular
commands usually change the Virtual Machine's state someway, while query
commands just return information.  The sections below are divided
accordingly.

It's important to observe that all communication examples are formatted
in a reader-friendly way, so that they're easier to understand.
However, in real protocol usage, they're emitted as a single line.

Also, the following notation is used to denote data flow:

Example:

     -> data issued by the Client

     <- Server data response

Please, refer to the QMP specification (docs/interop/qmp-spec.txt) for
detailed information on the Server command and response formats.

1.2 Stability Considerations
============================

The current QMP command set (described in this file) may be useful for a
number of use cases, however it's limited and several commands have bad
defined semantics, specially with regard to command completion.

These problems are going to be solved incrementally in the next QEMU
releases and we're going to establish a deprecation policy for badly
defined commands.

If you're planning to adopt QMP, please observe the following:

  1. The deprecation policy will take effect and be documented soon,
     please check the documentation of each used command as soon as a
     new release of QEMU is available

  2. DO NOT rely on anything which is not explicit documented

  3. Errors, in special, are not documented.  Applications should NOT
     check for specific errors classes or data (it's strongly
     recommended to only check for the "error" key)

1.3 QMP errors
==============

 -- Enum: QapiErrorClass

     QEMU error classes

     Values:
     'GenericError'
          this is used for errors that don't require a specific error
          class.  This should be the default case for most errors
     'CommandNotFound'
          the requested command has not been found
     'DeviceNotActive'
          a device has failed to be become active
     'DeviceNotFound'
          the requested device has not been found
     'KVMMissingCap'
          the requested operation can't be fulfilled because a required
          KVM capability is missing

     Since: 1.2

1.4 Common data types
=====================

 -- Enum: IoOperationType

     An enumeration of the I/O operation types

     Values:
     'read'
          read operation
     'write'
          write operation

     Since: 2.1

 -- Enum: OnOffAuto

     An enumeration of three options: on, off, and auto

     Values:
     'auto'
          QEMU selects the value between on and off
     'on'
          Enabled
     'off'
          Disabled

     Since: 2.2

 -- Enum: OnOffSplit

     An enumeration of three values: on, off, and split

     Values:
     'on'
          Enabled
     'off'
          Disabled
     'split'
          Mixed

     Since: 2.6

 -- Object: String

     A fat type wrapping 'str', to be embedded in lists.

     Members:
     'str: string'
          Not documented

     Since: 1.2

 -- Alternate: StrOrNull

     This is a string value or the explicit lack of a string (null
     pointer in C). Intended for cases when 'optional absent' already
     has a different meaning.

     Members:
     's: string'
          the string value
     'n: null'
          no string value

     Since: 2.10

 -- Enum: OffAutoPCIBAR

     An enumeration of options for specifying a PCI BAR

     Values:
     'off'
          The specified feature is disabled
     'auto'
          The PCI BAR for the feature is automatically selected
     'bar0'
          PCI BAR0 is used for the feature
     'bar1'
          PCI BAR1 is used for the feature
     'bar2'
          PCI BAR2 is used for the feature
     'bar3'
          PCI BAR3 is used for the feature
     'bar4'
          PCI BAR4 is used for the feature
     'bar5'
          PCI BAR5 is used for the feature

     Since: 2.12

 -- Enum: PCIELinkSpeed

     An enumeration of PCIe link speeds in units of GT/s

     Values:
     '2_5'
          2.5GT/s
     '5'
          5.0GT/s
     '8'
          8.0GT/s
     '16'
          16.0GT/s

     Since: 4.0

 -- Enum: PCIELinkWidth

     An enumeration of PCIe link width

     Values:
     '1'
          x1
     '2'
          x2
     '4'
          x4
     '8'
          x8
     '12'
          x12
     '16'
          x16
     '32'
          x32

     Since: 4.0

1.5 Socket data types
=====================

 -- Enum: NetworkAddressFamily

     The network address family

     Values:
     'ipv4'
          IPV4 family
     'ipv6'
          IPV6 family
     'unix'
          unix socket
     'vsock'
          vsock family (since 2.8)
     'unknown'
          otherwise

     Since: 2.1

 -- Object: InetSocketAddressBase

     Members:
     'host: string'
          host part of the address
     'port: string'
          port part of the address

 -- Object: InetSocketAddress

     Captures a socket address or address range in the Internet
     namespace.

     Members:
     'numeric: boolean' (optional)
          true if the host/port are guaranteed to be numeric, false if
          name resolution should be attempted.  Defaults to false.
          (Since 2.9)
     'to: int' (optional)
          If present, this is range of possible addresses, with port
          between 'port' and 'to'.
     'ipv4: boolean' (optional)
          whether to accept IPv4 addresses, default try both IPv4 and
          IPv6
     'ipv6: boolean' (optional)
          whether to accept IPv6 addresses, default try both IPv4 and
          IPv6
     'keep-alive: boolean' (optional)
          enable keep-alive when connecting to this socket.  Not
          supported for passive sockets.  (Since 4.2)
     The members of 'InetSocketAddressBase'

     Since: 1.3

 -- Object: UnixSocketAddress

     Captures a socket address in the local ("Unix socket") namespace.

     Members:
     'path: string'
          filesystem path to use

     Since: 1.3

 -- Object: VsockSocketAddress

     Captures a socket address in the vsock namespace.

     Members:
     'cid: string'
          unique host identifier
     'port: string'
          port

     Note: string types are used to allow for possible future hostname
     or service resolution support.

     Since: 2.8

 -- Object: SocketAddressLegacy

     Captures the address of a socket, which could also be a named file
     descriptor

     Members:
     'type'
          One of "inet", "unix", "vsock", "fd"
     'data: InetSocketAddress' when 'type' is "inet"
     'data: UnixSocketAddress' when 'type' is "unix"
     'data: VsockSocketAddress' when 'type' is "vsock"
     'data: String' when 'type' is "fd"

     Note: This type is deprecated in favor of SocketAddress.  The
     difference between SocketAddressLegacy and SocketAddress is that
     the latter is a flat union rather than a simple union.  Flat is
     nicer because it avoids nesting on the wire, i.e.  that form has
     fewer {}.

     Since: 1.3

 -- Enum: SocketAddressType

     Available SocketAddress types

     Values:
     'inet'
          Internet address
     'unix'
          Unix domain socket
     'vsock'
          VMCI address
     'fd'
          decimal is for file descriptor number, otherwise a file
          descriptor name.  Named file descriptors are permitted in
          monitor commands, in combination with the 'getfd' command.
          Decimal file descriptors are permitted at startup or other
          contexts where no monitor context is active.

     Since: 2.9

 -- Object: SocketAddress

     Captures the address of a socket, which could also be a named file
     descriptor

     Members:
     'type: SocketAddressType'
          Transport type
     The members of 'InetSocketAddress' when 'type' is "inet"
     The members of 'UnixSocketAddress' when 'type' is "unix"
     The members of 'VsockSocketAddress' when 'type' is "vsock"
     The members of 'String' when 'type' is "fd"

     Since: 2.9

1.6 VM run state
================

 -- Enum: RunState

     An enumeration of VM run states.

     Values:
     'debug'
          QEMU is running on a debugger
     'finish-migrate'
          guest is paused to finish the migration process
     'inmigrate'
          guest is paused waiting for an incoming migration.  Note that
          this state does not tell whether the machine will start at the
          end of the migration.  This depends on the command-line -S
          option and any invocation of 'stop' or 'cont' that has
          happened since QEMU was started.
     'internal-error'
          An internal error that prevents further guest execution has
          occurred
     'io-error'
          the last IOP has failed and the device is configured to pause
          on I/O errors
     'paused'
          guest has been paused via the 'stop' command
     'postmigrate'
          guest is paused following a successful 'migrate'
     'prelaunch'
          QEMU was started with -S and guest has not started
     'restore-vm'
          guest is paused to restore VM state
     'running'
          guest is actively running
     'save-vm'
          guest is paused to save the VM state
     'shutdown'
          guest is shut down (and -no-shutdown is in use)
     'suspended'
          guest is suspended (ACPI S3)
     'watchdog'
          the watchdog action is configured to pause and has been
          triggered
     'guest-panicked'
          guest has been panicked as a result of guest OS panic
     'colo'
          guest is paused to save/restore VM state under colo
          checkpoint, VM can not get into this state unless colo
          capability is enabled for migration.  (since 2.8)
     'preconfig'
          QEMU is paused before board specific init callback is
          executed.  The state is reachable only if the -preconfig CLI
          option is used.  (Since 3.0)

 -- Enum: ShutdownCause

     An enumeration of reasons for a Shutdown.

     Values:
     'none'
          No shutdown request pending
     'host-error'
          An error prevents further use of guest
     'host-qmp-quit'
          Reaction to the QMP command 'quit'
     'host-qmp-system-reset'
          Reaction to the QMP command 'system_reset'
     'host-signal'
          Reaction to a signal, such as SIGINT
     'host-ui'
          Reaction to a UI event, like window close
     'guest-shutdown'
          Guest shutdown/suspend request, via ACPI or other
          hardware-specific means
     'guest-reset'
          Guest reset request, and command line turns that into a
          shutdown
     'guest-panic'
          Guest panicked, and command line turns that into a shutdown
     'subsystem-reset'
          Partial guest reset that does not trigger QMP events and
          ignores -no-reboot.  This is useful for sanitizing hypercalls
          on s390 that are used during kexec/kdump/boot

 -- Object: StatusInfo

     Information about VCPU run state

     Members:
     'running: boolean'
          true if all VCPUs are runnable, false if not runnable
     'singlestep: boolean'
          true if VCPUs are in single-step mode
     'status: RunState'
          the virtual machine 'RunState'

     Since: 0.14.0

     Notes: 'singlestep' is enabled through the GDB stub

 -- Command: query-status

     Query the run status of all VCPUs

     Returns: 'StatusInfo' reflecting all VCPUs

     Since: 0.14.0

     Example:
          -> { "execute": "query-status" }
          <- { "return": { "running": true,
                           "singlestep": false,
                           "status": "running" } }

 -- Event: SHUTDOWN

     Emitted when the virtual machine has shut down, indicating that
     qemu is about to exit.

     Arguments:
     'guest: boolean'
          If true, the shutdown was triggered by a guest request (such
          as a guest-initiated ACPI shutdown request or other
          hardware-specific action) rather than a host request (such as
          sending qemu a SIGINT). (since 2.10)
     'reason: ShutdownCause'
          The 'ShutdownCause' which resulted in the SHUTDOWN. (since
          4.0)

     Note: If the command-line option "-no-shutdown" has been specified,
     qemu will not exit, and a STOP event will eventually follow the
     SHUTDOWN event

     Since: 0.12.0

     Example:
          <- { "event": "SHUTDOWN", "data": { "guest": true },
               "timestamp": { "seconds": 1267040730, "microseconds": 682951 } }

 -- Event: POWERDOWN

     Emitted when the virtual machine is powered down through the power
     control system, such as via ACPI.

     Since: 0.12.0

     Example:
          <- { "event": "POWERDOWN",
               "timestamp": { "seconds": 1267040730, "microseconds": 682951 } }

 -- Event: RESET

     Emitted when the virtual machine is reset

     Arguments:
     'guest: boolean'
          If true, the reset was triggered by a guest request (such as a
          guest-initiated ACPI reboot request or other hardware-specific
          action) rather than a host request (such as the QMP command
          system_reset).  (since 2.10)
     'reason: ShutdownCause'
          The 'ShutdownCause' of the RESET. (since 4.0)

     Since: 0.12.0

     Example:
          <- { "event": "RESET", "data": { "guest": false },
               "timestamp": { "seconds": 1267041653, "microseconds": 9518 } }

 -- Event: STOP

     Emitted when the virtual machine is stopped

     Since: 0.12.0

     Example:
          <- { "event": "STOP",
               "timestamp": { "seconds": 1267041730, "microseconds": 281295 } }

 -- Event: RESUME

     Emitted when the virtual machine resumes execution

     Since: 0.12.0

     Example:
          <- { "event": "RESUME",
               "timestamp": { "seconds": 1271770767, "microseconds": 582542 } }

 -- Event: SUSPEND

     Emitted when guest enters a hardware suspension state, for example,
     S3 state, which is sometimes called standby state

     Since: 1.1

     Example:
          <- { "event": "SUSPEND",
               "timestamp": { "seconds": 1344456160, "microseconds": 309119 } }

 -- Event: SUSPEND_DISK

     Emitted when guest enters a hardware suspension state with data
     saved on disk, for example, S4 state, which is sometimes called
     hibernate state

     Note: QEMU shuts down (similar to event 'SHUTDOWN') when entering
     this state

     Since: 1.2

     Example:
          <-   { "event": "SUSPEND_DISK",
                 "timestamp": { "seconds": 1344456160, "microseconds": 309119 } }

 -- Event: WAKEUP

     Emitted when the guest has woken up from suspend state and is
     running

     Since: 1.1

     Example:
          <- { "event": "WAKEUP",
               "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }

 -- Event: WATCHDOG

     Emitted when the watchdog device's timer is expired

     Arguments:
     'action: WatchdogAction'
          action that has been taken

     Note: If action is "reset", "shutdown", or "pause" the WATCHDOG
     event is followed respectively by the RESET, SHUTDOWN, or STOP
     events

     Note: This event is rate-limited.

     Since: 0.13.0

     Example:
          <- { "event": "WATCHDOG",
               "data": { "action": "reset" },
               "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }

 -- Enum: WatchdogAction

     An enumeration of the actions taken when the watchdog device's
     timer is expired

     Values:
     'reset'
          system resets
     'shutdown'
          system shutdown, note that it is similar to 'powerdown', which
          tries to set to system status and notify guest
     'poweroff'
          system poweroff, the emulator program exits
     'pause'
          system pauses, similar to 'stop'
     'debug'
          system enters debug state
     'none'
          nothing is done
     'inject-nmi'
          a non-maskable interrupt is injected into the first VCPU (all
          VCPUS on x86) (since 2.4)

     Since: 2.1

 -- Command: watchdog-set-action

     Set watchdog action

     Arguments:
     'action: WatchdogAction'
          Not documented

     Since: 2.11

 -- Event: GUEST_PANICKED

     Emitted when guest OS panic is detected

     Arguments:
     'action: GuestPanicAction'
          action that has been taken, currently always "pause"
     'info: GuestPanicInformation' (optional)
          information about a panic (since 2.9)

     Since: 1.5

     Example:
          <- { "event": "GUEST_PANICKED",
               "data": { "action": "pause" } }

 -- Enum: GuestPanicAction

     An enumeration of the actions taken when guest OS panic is detected

     Values:
     'pause'
          system pauses
     'poweroff'
          Not documented

     Since: 2.1 (poweroff since 2.8)

 -- Enum: GuestPanicInformationType

     An enumeration of the guest panic information types

     Values:
     'hyper-v'
          hyper-v guest panic information type
     's390'
          s390 guest panic information type (Since: 2.12)

     Since: 2.9

 -- Object: GuestPanicInformation

     Information about a guest panic

     Members:
     'type: GuestPanicInformationType'
          Crash type that defines the hypervisor specific information
     The members of 'GuestPanicInformationHyperV' when 'type' is "hyper-v"
     The members of 'GuestPanicInformationS390' when 'type' is "s390"

     Since: 2.9

 -- Object: GuestPanicInformationHyperV

     Hyper-V specific guest panic information (HV crash MSRs)

     Members:
     'arg1: int'
          Not documented
     'arg2: int'
          Not documented
     'arg3: int'
          Not documented
     'arg4: int'
          Not documented
     'arg5: int'
          Not documented

     Since: 2.9

 -- Enum: S390CrashReason

     Reason why the CPU is in a crashed state.

     Values:
     'unknown'
          no crash reason was set
     'disabled-wait'
          the CPU has entered a disabled wait state
     'extint-loop'
          clock comparator or cpu timer interrupt with new PSW enabled
          for external interrupts
     'pgmint-loop'
          program interrupt with BAD new PSW
     'opint-loop'
          operation exception interrupt with invalid code at the program
          interrupt new PSW

     Since: 2.12

 -- Object: GuestPanicInformationS390

     S390 specific guest panic information (PSW)

     Members:
     'core: int'
          core id of the CPU that crashed
     'psw-mask: int'
          control fields of guest PSW
     'psw-addr: int'
          guest instruction address
     'reason: S390CrashReason'
          guest crash reason

     Since: 2.12

1.7 Cryptography
================

 -- Enum: QCryptoTLSCredsEndpoint

     The type of network endpoint that will be using the credentials.
     Most types of credential require different setup / structures
     depending on whether they will be used in a server versus a client.

     Values:
     'client'
          the network endpoint is acting as the client
     'server'
          the network endpoint is acting as the server

     Since: 2.5

 -- Enum: QCryptoSecretFormat

     The data format that the secret is provided in

     Values:
     'raw'
          raw bytes.  When encoded in JSON only valid UTF-8 sequences
          can be used
     'base64'
          arbitrary base64 encoded binary data

     Since: 2.6

 -- Enum: QCryptoHashAlgorithm

     The supported algorithms for computing content digests

     Values:
     'md5'
          MD5.  Should not be used in any new code, legacy compat only
     'sha1'
          SHA-1.  Should not be used in any new code, legacy compat only
     'sha224'
          SHA-224.  (since 2.7)
     'sha256'
          SHA-256.  Current recommended strong hash.
     'sha384'
          SHA-384.  (since 2.7)
     'sha512'
          SHA-512.  (since 2.7)
     'ripemd160'
          RIPEMD-160.  (since 2.7)

     Since: 2.6

 -- Enum: QCryptoCipherAlgorithm

     The supported algorithms for content encryption ciphers

     Values:
     'aes-128'
          AES with 128 bit / 16 byte keys
     'aes-192'
          AES with 192 bit / 24 byte keys
     'aes-256'
          AES with 256 bit / 32 byte keys
     'des-rfb'
          RFB specific variant of single DES. Do not use except in VNC.
     '3des'
          3DES(EDE) with 192 bit / 24 byte keys (since 2.9)
     'cast5-128'
          Cast5 with 128 bit / 16 byte keys
     'serpent-128'
          Serpent with 128 bit / 16 byte keys
     'serpent-192'
          Serpent with 192 bit / 24 byte keys
     'serpent-256'
          Serpent with 256 bit / 32 byte keys
     'twofish-128'
          Twofish with 128 bit / 16 byte keys
     'twofish-192'
          Twofish with 192 bit / 24 byte keys
     'twofish-256'
          Twofish with 256 bit / 32 byte keys

     Since: 2.6

 -- Enum: QCryptoCipherMode

     The supported modes for content encryption ciphers

     Values:
     'ecb'
          Electronic Code Book
     'cbc'
          Cipher Block Chaining
     'xts'
          XEX with tweaked code book and ciphertext stealing
     'ctr'
          Counter (Since 2.8)

     Since: 2.6

 -- Enum: QCryptoIVGenAlgorithm

     The supported algorithms for generating initialization vectors for
     full disk encryption.  The 'plain' generator should not be used for
     disks with sector numbers larger than 2^32, except where
     compatibility with pre-existing Linux dm-crypt volumes is required.

     Values:
     'plain'
          64-bit sector number truncated to 32-bits
     'plain64'
          64-bit sector number
     'essiv'
          64-bit sector number encrypted with a hash of the encryption
          key

     Since: 2.6

 -- Enum: QCryptoBlockFormat

     The supported full disk encryption formats

     Values:
     'qcow'
          QCow/QCow2 built-in AES-CBC encryption.  Use only for
          liberating data from old images.
     'luks'
          LUKS encryption format.  Recommended for new images

     Since: 2.6

 -- Object: QCryptoBlockOptionsBase

     The common options that apply to all full disk encryption formats

     Members:
     'format: QCryptoBlockFormat'
          the encryption format

     Since: 2.6

 -- Object: QCryptoBlockOptionsQCow

     The options that apply to QCow/QCow2 AES-CBC encryption format

     Members:
     'key-secret: string' (optional)
          the ID of a QCryptoSecret object providing the decryption key.
          Mandatory except when probing image for metadata only.

     Since: 2.6

 -- Object: QCryptoBlockOptionsLUKS

     The options that apply to LUKS encryption format

     Members:
     'key-secret: string' (optional)
          the ID of a QCryptoSecret object providing the decryption key.
          Mandatory except when probing image for metadata only.

     Since: 2.6

 -- Object: QCryptoBlockCreateOptionsLUKS

     The options that apply to LUKS encryption format initialization

     Members:
     'cipher-alg: QCryptoCipherAlgorithm' (optional)
          the cipher algorithm for data encryption Currently defaults to
          'aes-256'.
     'cipher-mode: QCryptoCipherMode' (optional)
          the cipher mode for data encryption Currently defaults to
          'xts'
     'ivgen-alg: QCryptoIVGenAlgorithm' (optional)
          the initialization vector generator Currently defaults to
          'plain64'
     'ivgen-hash-alg: QCryptoHashAlgorithm' (optional)
          the initialization vector generator hash Currently defaults to
          'sha256'
     'hash-alg: QCryptoHashAlgorithm' (optional)
          the master key hash algorithm Currently defaults to 'sha256'
     'iter-time: int' (optional)
          number of milliseconds to spend in PBKDF passphrase
          processing.  Currently defaults to 2000.  (since 2.8)
     The members of 'QCryptoBlockOptionsLUKS'

     Since: 2.6

 -- Object: QCryptoBlockOpenOptions

     The options that are available for all encryption formats when
     opening an existing volume

     Members:
     The members of 'QCryptoBlockOptionsBase'
     The members of 'QCryptoBlockOptionsQCow' when 'format' is "qcow"
     The members of 'QCryptoBlockOptionsLUKS' when 'format' is "luks"

     Since: 2.6

 -- Object: QCryptoBlockCreateOptions

     The options that are available for all encryption formats when
     initializing a new volume

     Members:
     The members of 'QCryptoBlockOptionsBase'
     The members of 'QCryptoBlockOptionsQCow' when 'format' is "qcow"
     The members of 'QCryptoBlockCreateOptionsLUKS' when 'format' is "luks"

     Since: 2.6

 -- Object: QCryptoBlockInfoBase

     The common information that applies to all full disk encryption
     formats

     Members:
     'format: QCryptoBlockFormat'
          the encryption format

     Since: 2.7

 -- Object: QCryptoBlockInfoLUKSSlot

     Information about the LUKS block encryption key slot options

     Members:
     'active: boolean'
          whether the key slot is currently in use
     'key-offset: int'
          offset to the key material in bytes
     'iters: int' (optional)
          number of PBKDF2 iterations for key material
     'stripes: int' (optional)
          number of stripes for splitting key material

     Since: 2.7

 -- Object: QCryptoBlockInfoLUKS

     Information about the LUKS block encryption options

     Members:
     'cipher-alg: QCryptoCipherAlgorithm'
          the cipher algorithm for data encryption
     'cipher-mode: QCryptoCipherMode'
          the cipher mode for data encryption
     'ivgen-alg: QCryptoIVGenAlgorithm'
          the initialization vector generator
     'ivgen-hash-alg: QCryptoHashAlgorithm' (optional)
          the initialization vector generator hash
     'hash-alg: QCryptoHashAlgorithm'
          the master key hash algorithm
     'payload-offset: int'
          offset to the payload data in bytes
     'master-key-iters: int'
          number of PBKDF2 iterations for key material
     'uuid: string'
          unique identifier for the volume
     'slots: array of QCryptoBlockInfoLUKSSlot'
          information about each key slot

     Since: 2.7

 -- Object: QCryptoBlockInfo

     Information about the block encryption options

     Members:
     The members of 'QCryptoBlockInfoBase'
     The members of 'QCryptoBlockInfoLUKS' when 'format' is "luks"

     Since: 2.7

1.8 Block devices
=================

1.8.1 Block core (VM unrelated)
-------------------------------

1.8.2 Background jobs
---------------------

 -- Enum: JobType

     Type of a background job.

     Values:
     'commit'
          block commit job type, see "block-commit"
     'stream'
          block stream job type, see "block-stream"
     'mirror'
          drive mirror job type, see "drive-mirror"
     'backup'
          drive backup job type, see "drive-backup"
     'create'
          image creation job type, see "blockdev-create" (since 3.0)

     Since: 1.7

 -- Enum: JobStatus

     Indicates the present state of a given job in its lifetime.

     Values:
     'undefined'
          Erroneous, default state.  Should not ever be visible.
     'created'
          The job has been created, but not yet started.
     'running'
          The job is currently running.
     'paused'
          The job is running, but paused.  The pause may be requested by
          either the QMP user or by internal processes.
     'ready'
          The job is running, but is ready for the user to signal
          completion.  This is used for long-running jobs like mirror
          that are designed to run indefinitely.
     'standby'
          The job is ready, but paused.  This is nearly identical to
          'paused'.  The job may return to 'ready' or otherwise be
          canceled.
     'waiting'
          The job is waiting for other jobs in the transaction to
          converge to the waiting state.  This status will likely not be
          visible for the last job in a transaction.
     'pending'
          The job has finished its work, but has finalization steps that
          it needs to make prior to completing.  These changes will
          require manual intervention via 'job-finalize' if
          auto-finalize was set to false.  These pending changes may
          still fail.
     'aborting'
          The job is in the process of being aborted, and will finish
          with an error.  The job will afterwards report that it is
          'concluded'.  This status may not be visible to the management
          process.
     'concluded'
          The job has finished all work.  If auto-dismiss was set to
          false, the job will remain in the query list until it is
          dismissed via 'job-dismiss'.
     'null'
          The job is in the process of being dismantled.  This state
          should not ever be visible externally.

     Since: 2.12

 -- Enum: JobVerb

     Represents command verbs that can be applied to a job.

     Values:
     'cancel'
          see 'job-cancel'
     'pause'
          see 'job-pause'
     'resume'
          see 'job-resume'
     'set-speed'
          see 'block-job-set-speed'
     'complete'
          see 'job-complete'
     'dismiss'
          see 'job-dismiss'
     'finalize'
          see 'job-finalize'

     Since: 2.12

 -- Event: JOB_STATUS_CHANGE

     Emitted when a job transitions to a different status.

     Arguments:
     'id: string'
          The job identifier
     'status: JobStatus'
          The new job status

     Since: 3.0

 -- Command: job-pause

     Pause an active job.

     This command returns immediately after marking the active job for
     pausing.  Pausing an already paused job is an error.

     The job will pause as soon as possible, which means transitioning
     into the PAUSED state if it was RUNNING, or into STANDBY if it was
     READY. The corresponding JOB_STATUS_CHANGE event will be emitted.

     Cancelling a paused job automatically resumes it.

     Arguments:
     'id: string'
          The job identifier.

     Since: 3.0

 -- Command: job-resume

     Resume a paused job.

     This command returns immediately after resuming a paused job.
     Resuming an already running job is an error.

     'id' : The job identifier.

     Arguments:
     'id: string'
          Not documented

     Since: 3.0

 -- Command: job-cancel

     Instruct an active background job to cancel at the next
     opportunity.  This command returns immediately after marking the
     active job for cancellation.

     The job will cancel as soon as possible and then emit a
     JOB_STATUS_CHANGE event.  Usually, the status will change to
     ABORTING, but it is possible that a job successfully completes
     (e.g.  because it was almost done and there was no opportunity to
     cancel earlier than completing the job) and transitions to PENDING
     instead.

     Arguments:
     'id: string'
          The job identifier.

     Since: 3.0

 -- Command: job-complete

     Manually trigger completion of an active job in the READY state.

     Arguments:
     'id: string'
          The job identifier.

     Since: 3.0

 -- Command: job-dismiss

     Deletes a job that is in the CONCLUDED state.  This command only
     needs to be run explicitly for jobs that don't have automatic
     dismiss enabled.

     This command will refuse to operate on any job that has not yet
     reached its terminal state, JOB_STATUS_CONCLUDED. For jobs that
     make use of JOB_READY event, job-cancel or job-complete will still
     need to be used as appropriate.

     Arguments:
     'id: string'
          The job identifier.

     Since: 3.0

 -- Command: job-finalize

     Instructs all jobs in a transaction (or a single job if it is not
     part of any transaction) to finalize any graph changes and do any
     necessary cleanup.  This command requires that all involved jobs
     are in the PENDING state.

     For jobs in a transaction, instructing one job to finalize will
     force ALL jobs in the transaction to finalize, so it is only
     necessary to instruct a single member job to finalize.

     Arguments:
     'id: string'
          The identifier of any job in the transaction, or of a job that
          is not part of any transaction.

     Since: 3.0

 -- Object: JobInfo

     Information about a job.

     Members:
     'id: string'
          The job identifier
     'type: JobType'
          The kind of job that is being performed
     'status: JobStatus'
          Current job state/status
     'current-progress: int'
          Progress made until now.  The unit is arbitrary and the value
          can only meaningfully be used for the ratio of
          'current-progress' to 'total-progress'.  The value is
          monotonically increasing.
     'total-progress: int'
          Estimated 'current-progress' value at the completion of the
          job.  This value can arbitrarily change while the job is
          running, in both directions.
     'error: string' (optional)
          If this field is present, the job failed; if it is still
          missing in the CONCLUDED state, this indicates successful
          completion.

          The value is a human-readable error message to describe the
          reason for the job failure.  It should not be parsed by
          applications.

     Since: 3.0

 -- Command: query-jobs

     Return information about jobs.

     Returns: a list with a 'JobInfo' for each active job

     Since: 3.0

 -- Object: SnapshotInfo

     Members:
     'id: string'
          unique snapshot id
     'name: string'
          user chosen name
     'vm-state-size: int'
          size of the VM state
     'date-sec: int'
          UTC date of the snapshot in seconds
     'date-nsec: int'
          fractional part in nano seconds to be used with date-sec
     'vm-clock-sec: int'
          VM clock relative to boot in seconds
     'vm-clock-nsec: int'
          fractional part in nano seconds to be used with vm-clock-sec

     Since: 1.3

 -- Object: ImageInfoSpecificQCow2EncryptionBase

     Members:
     'format: BlockdevQcow2EncryptionFormat'
          The encryption format

     Since: 2.10

 -- Object: ImageInfoSpecificQCow2Encryption

     Members:
     The members of 'ImageInfoSpecificQCow2EncryptionBase'
     The members of 'QCryptoBlockInfoLUKS' when 'format' is "luks"

     Since: 2.10

 -- Object: ImageInfoSpecificQCow2

     Members:
     'compat: string'
          compatibility level
     'data-file: string' (optional)
          the filename of the external data file that is stored in the
          image and used as a default for opening the image (since: 4.0)
     'data-file-raw: boolean' (optional)
          True if the external data file must stay valid as a standalone
          (read-only) raw image without looking at qcow2 metadata
          (since: 4.0)
     'lazy-refcounts: boolean' (optional)
          on or off; only valid for compat >= 1.1
     'corrupt: boolean' (optional)
          true if the image has been marked corrupt; only valid for
          compat >= 1.1 (since 2.2)
     'refcount-bits: int'
          width of a refcount entry in bits (since 2.3)
     'encrypt: ImageInfoSpecificQCow2Encryption' (optional)
          details about encryption parameters; only set if image is
          encrypted (since 2.10)
     'bitmaps: array of Qcow2BitmapInfo' (optional)
          A list of qcow2 bitmap details (since 4.0)

     Since: 1.7

 -- Object: ImageInfoSpecificVmdk

     Members:
     'create-type: string'
          The create type of VMDK image
     'cid: int'
          Content id of image
     'parent-cid: int'
          Parent VMDK image's cid
     'extents: array of ImageInfo'
          List of extent files

     Since: 1.7

 -- Object: ImageInfoSpecific

     A discriminated record of image format specific information
     structures.

     Members:
     'type'
          One of "qcow2", "vmdk", "luks"
     'data: ImageInfoSpecificQCow2' when 'type' is "qcow2"
     'data: ImageInfoSpecificVmdk' when 'type' is "vmdk"
     'data: QCryptoBlockInfoLUKS' when 'type' is "luks"

     Since: 1.7

 -- Object: ImageInfo

     Information about a QEMU image file

     Members:
     'filename: string'
          name of the image file
     'format: string'
          format of the image file
     'virtual-size: int'
          maximum capacity in bytes of the image
     'actual-size: int' (optional)
          actual size on disk in bytes of the image
     'dirty-flag: boolean' (optional)
          true if image is not cleanly closed
     'cluster-size: int' (optional)
          size of a cluster in bytes
     'encrypted: boolean' (optional)
          true if the image is encrypted
     'compressed: boolean' (optional)
          true if the image is compressed (Since 1.7)
     'backing-filename: string' (optional)
          name of the backing file
     'full-backing-filename: string' (optional)
          full path of the backing file
     'backing-filename-format: string' (optional)
          the format of the backing file
     'snapshots: array of SnapshotInfo' (optional)
          list of VM snapshots
     'backing-image: ImageInfo' (optional)
          info of the backing image (since 1.6)
     'format-specific: ImageInfoSpecific' (optional)
          structure supplying additional format-specific information
          (since 1.7)

     Since: 1.3

 -- Object: ImageCheck

     Information about a QEMU image file check

     Members:
     'filename: string'
          name of the image file checked
     'format: string'
          format of the image file checked
     'check-errors: int'
          number of unexpected errors occurred during check
     'image-end-offset: int' (optional)
          offset (in bytes) where the image ends, this field is present
          if the driver for the image format supports it
     'corruptions: int' (optional)
          number of corruptions found during the check if any
     'leaks: int' (optional)
          number of leaks found during the check if any
     'corruptions-fixed: int' (optional)
          number of corruptions fixed during the check if any
     'leaks-fixed: int' (optional)
          number of leaks fixed during the check if any
     'total-clusters: int' (optional)
          total number of clusters, this field is present if the driver
          for the image format supports it
     'allocated-clusters: int' (optional)
          total number of allocated clusters, this field is present if
          the driver for the image format supports it
     'fragmented-clusters: int' (optional)
          total number of fragmented clusters, this field is present if
          the driver for the image format supports it
     'compressed-clusters: int' (optional)
          total number of compressed clusters, this field is present if
          the driver for the image format supports it

     Since: 1.4

 -- Object: MapEntry

     Mapping information from a virtual block range to a host file range

     Members:
     'start: int'
          the start byte of the mapped virtual range
     'length: int'
          the number of bytes of the mapped virtual range
     'data: boolean'
          whether the mapped range has data
     'zero: boolean'
          whether the virtual blocks are zeroed
     'depth: int'
          the depth of the mapping
     'offset: int' (optional)
          the offset in file that the virtual sectors are mapped to
     'filename: string' (optional)
          filename that is referred to by 'offset'

     Since: 2.6

 -- Object: BlockdevCacheInfo

     Cache mode information for a block device

     Members:
     'writeback: boolean'
          true if writeback mode is enabled
     'direct: boolean'
          true if the host page cache is bypassed (O_DIRECT)
     'no-flush: boolean'
          true if flush requests are ignored for the device

     Since: 2.3

 -- Object: BlockDeviceInfo

     Information about the backing device for a block device.

     Members:
     'file: string'
          the filename of the backing device
     'node-name: string' (optional)
          the name of the block driver node (Since 2.0)
     'ro: boolean'
          true if the backing device was open read-only
     'drv: string'
          the name of the block format used to open the backing device.
          As of 0.14.0 this can be: 'blkdebug', 'bochs', 'cloop', 'cow',
          'dmg', 'file', 'file', 'ftp', 'ftps', 'host_cdrom',
          'host_device', 'http', 'https', 'luks', 'nbd', 'parallels',
          'qcow', 'qcow2', 'raw', 'vdi', 'vmdk', 'vpc', 'vvfat' 2.2:
          'archipelago' added, 'cow' dropped 2.3: 'host_floppy'
          deprecated 2.5: 'host_floppy' dropped 2.6: 'luks' added 2.8:
          'replication' added, 'tftp' dropped 2.9: 'archipelago' dropped
     'backing_file: string' (optional)
          the name of the backing file (for copy-on-write)
     'backing_file_depth: int'
          number of files in the backing file chain (since: 1.2)
     'encrypted: boolean'
          true if the backing device is encrypted
     'encryption_key_missing: boolean'
          Deprecated; always false
     'detect_zeroes: BlockdevDetectZeroesOptions'
          detect and optimize zero writes (Since 2.1)
     'bps: int'
          total throughput limit in bytes per second is specified
     'bps_rd: int'
          read throughput limit in bytes per second is specified
     'bps_wr: int'
          write throughput limit in bytes per second is specified
     'iops: int'
          total I/O operations per second is specified
     'iops_rd: int'
          read I/O operations per second is specified
     'iops_wr: int'
          write I/O operations per second is specified
     'image: ImageInfo'
          the info of image used (since: 1.6)
     'bps_max: int' (optional)
          total throughput limit during bursts, in bytes (Since 1.7)
     'bps_rd_max: int' (optional)
          read throughput limit during bursts, in bytes (Since 1.7)
     'bps_wr_max: int' (optional)
          write throughput limit during bursts, in bytes (Since 1.7)
     'iops_max: int' (optional)
          total I/O operations per second during bursts, in bytes (Since
          1.7)
     'iops_rd_max: int' (optional)
          read I/O operations per second during bursts, in bytes (Since
          1.7)
     'iops_wr_max: int' (optional)
          write I/O operations per second during bursts, in bytes (Since
          1.7)
     'bps_max_length: int' (optional)
          maximum length of the 'bps_max' burst period, in seconds.
          (Since 2.6)
     'bps_rd_max_length: int' (optional)
          maximum length of the 'bps_rd_max' burst period, in seconds.
          (Since 2.6)
     'bps_wr_max_length: int' (optional)
          maximum length of the 'bps_wr_max' burst period, in seconds.
          (Since 2.6)
     'iops_max_length: int' (optional)
          maximum length of the 'iops' burst period, in seconds.  (Since
          2.6)
     'iops_rd_max_length: int' (optional)
          maximum length of the 'iops_rd_max' burst period, in seconds.
          (Since 2.6)
     'iops_wr_max_length: int' (optional)
          maximum length of the 'iops_wr_max' burst period, in seconds.
          (Since 2.6)
     'iops_size: int' (optional)
          an I/O size in bytes (Since 1.7)
     'group: string' (optional)
          throttle group name (Since 2.4)
     'cache: BlockdevCacheInfo'
          the cache mode used for the block device (since: 2.3)
     'write_threshold: int'
          configured write threshold for the device.  0 if disabled.
          (Since 2.3)
     'dirty-bitmaps: array of BlockDirtyInfo' (optional)
          dirty bitmaps information (only present if node has one or
          more dirty bitmaps) (Since 4.2)

     Since: 0.14.0

 -- Enum: BlockDeviceIoStatus

     An enumeration of block device I/O status.

     Values:
     'ok'
          The last I/O operation has succeeded
     'failed'
          The last I/O operation has failed
     'nospace'
          The last I/O operation has failed due to a no-space condition

     Since: 1.0

 -- Object: BlockDeviceMapEntry

     Entry in the metadata map of the device (returned by "qemu-img
     map")

     Members:
     'start: int'
          Offset in the image of the first byte described by this entry
          (in bytes)
     'length: int'
          Length of the range described by this entry (in bytes)
     'depth: int'
          Number of layers (0 = top image, 1 = top image's backing file,
          etc.)  before reaching one for which the range is allocated.
          The value is in the range 0 to the depth of the image chain -
          1.
     'zero: boolean'
          the sectors in this range read as zeros
     'data: boolean'
          reading the image will actually read data from a file (in
          particular, if 'offset' is present this means that the sectors
          are not simply preallocated, but contain actual data in raw
          format)
     'offset: int' (optional)
          if present, the image file stores the data for this range in
          raw format at the given offset.

     Since: 1.7

 -- Enum: DirtyBitmapStatus

     An enumeration of possible states that a dirty bitmap can report to
     the user.

     Values:
     'frozen'
          The bitmap is currently in-use by some operation and is
          immutable.  If the bitmap was 'active' prior to the operation,
          new writes by the guest are being recorded in a temporary
          buffer, and will not be lost.  Generally, bitmaps are cleared
          on successful use in an operation and the temporary buffer is
          committed into the bitmap.  On failure, the temporary buffer
          is merged back into the bitmap without first clearing it.
          Please refer to the documentation for each bitmap-using
          operation, See also 'blockdev-backup', 'drive-backup'.
     'disabled'
          The bitmap is not currently recording new writes by the guest.
          This is requested explicitly via 'block-dirty-bitmap-disable'.
          It can still be cleared, deleted, or used for backup
          operations.
     'active'
          The bitmap is actively monitoring for new writes, and can be
          cleared, deleted, or used for backup operations.
     'locked'
          The bitmap is currently in-use by some operation and is
          immutable.  If the bitmap was 'active' prior to the operation,
          it is still recording new writes.  If the bitmap was
          'disabled', it is not recording new writes.  (Since 2.12)
     'inconsistent'
          This is a persistent dirty bitmap that was marked in-use on
          disk, and is unusable by QEMU. It can only be deleted.  Please
          rely on the inconsistent field in 'BlockDirtyInfo' instead, as
          the status field is deprecated.  (Since 4.0)

     Since: 2.4

 -- Object: BlockDirtyInfo

     Block dirty bitmap information.

     Members:
     'name: string' (optional)
          the name of the dirty bitmap (Since 2.4)
     'count: int'
          number of dirty bytes according to the dirty bitmap
     'granularity: int'
          granularity of the dirty bitmap in bytes (since 1.4)
     'status: DirtyBitmapStatus'
          Deprecated in favor of 'recording' and 'locked'.  (since 2.4)
     'recording: boolean'
          true if the bitmap is recording new writes from the guest.
          Replaces 'active' and 'disabled' statuses.  (since 4.0)
     'busy: boolean'
          true if the bitmap is in-use by some operation (NBD or jobs)
          and cannot be modified via QMP or used by another operation.
          Replaces 'locked' and 'frozen' statuses.  (since 4.0)
     'persistent: boolean'
          true if the bitmap was stored on disk, is scheduled to be
          stored on disk, or both.  (since 4.0)
     'inconsistent: boolean' (optional)
          true if this is a persistent bitmap that was improperly
          stored.  Implies 'persistent' to be true; 'recording' and
          'busy' to be false.  This bitmap cannot be used.  To remove
          it, use 'block-dirty-bitmap-remove'.  (Since 4.0)

     Since: 1.3

 -- Enum: Qcow2BitmapInfoFlags

     An enumeration of flags that a bitmap can report to the user.

     Values:
     'in-use'
          This flag is set by any process actively modifying the qcow2
          file, and cleared when the updated bitmap is flushed to the
          qcow2 image.  The presence of this flag in an offline image
          means that the bitmap was not saved correctly after its last
          usage, and may contain inconsistent data.
     'auto'
          The bitmap must reflect all changes of the virtual disk by any
          application that would write to this qcow2 file.

     Since: 4.0

 -- Object: Qcow2BitmapInfo

     Qcow2 bitmap information.

     Members:
     'name: string'
          the name of the bitmap
     'granularity: int'
          granularity of the bitmap in bytes
     'flags: array of Qcow2BitmapInfoFlags'
          flags of the bitmap

     Since: 4.0

 -- Object: BlockLatencyHistogramInfo

     Block latency histogram.

     Members:
     'boundaries: array of int'
          list of interval boundary values in nanoseconds, all greater
          than zero and in ascending order.  For example, the list [10,
          50, 100] produces the following histogram intervals: [0, 10),
          [10, 50), [50, 100), [100, +inf).
     'bins: array of int'
          list of io request counts corresponding to histogram
          intervals.  len('bins') = len('boundaries') + 1 For the
          example above, 'bins' may be something like [3, 1, 5, 2], and
          corresponding histogram looks like:

          5| * 4| * 3| * * 2| * * * 1| * * * * +------------ 10 50 100

     Since: 4.0

 -- Command: block-latency-histogram-set

     Manage read, write and flush latency histograms for the device.

     If only 'id' parameter is specified, remove all present latency
     histograms for the device.  Otherwise, add/reset some of (or all)
     latency histograms.

     Arguments:
     'id: string'
          The name or QOM path of the guest device.
     'boundaries: array of int' (optional)
          list of interval boundary values (see description in
          BlockLatencyHistogramInfo definition).  If specified, all
          latency histograms are removed, and empty ones created for all
          io types with intervals corresponding to 'boundaries' (except
          for io types, for which specific boundaries are set through
          the following parameters).
     'boundaries-read: array of int' (optional)
          list of interval boundary values for read latency histogram.
          If specified, old read latency histogram is removed, and empty
          one created with intervals corresponding to 'boundaries-read'.
          The parameter has higher priority then 'boundaries'.
     'boundaries-write: array of int' (optional)
          list of interval boundary values for write latency histogram.
     'boundaries-flush: array of int' (optional)
          list of interval boundary values for flush latency histogram.

     Returns: error if device is not found or any boundary arrays are
     invalid.

     Since: 4.0

     Example:
          set new histograms for all io types with intervals
          [0, 10), [10, 50), [50, 100), [100, +inf):

          -> { "execute": "block-latency-histogram-set",
               "arguments": { "id": "drive0",
                              "boundaries": [10, 50, 100] } }
          <- { "return": {} }

     Example:
          set new histogram only for write, other histograms will remain
          not changed (or not created):

          -> { "execute": "block-latency-histogram-set",
               "arguments": { "id": "drive0",
                              "boundaries-write": [10, 50, 100] } }
          <- { "return": {} }

     Example:
          set new histograms with the following intervals:
            read, flush: [0, 10), [10, 50), [50, 100), [100, +inf)
            write: [0, 1000), [1000, 5000), [5000, +inf)

          -> { "execute": "block-latency-histogram-set",
               "arguments": { "id": "drive0",
                              "boundaries": [10, 50, 100],
                              "boundaries-write": [1000, 5000] } }
          <- { "return": {} }

     Example:
          remove all latency histograms:

          -> { "execute": "block-latency-histogram-set",
               "arguments": { "id": "drive0" } }
          <- { "return": {} }

 -- Object: BlockInfo

     Block device information.  This structure describes a virtual
     device and the backing device associated with it.

     Members:
     'device: string'
          The device name associated with the virtual device.
     'qdev: string' (optional)
          The qdev ID, or if no ID is assigned, the QOM path of the
          block device.  (since 2.10)
     'type: string'
          This field is returned only for compatibility reasons, it
          should not be used (always returns 'unknown')
     'removable: boolean'
          True if the device supports removable media.
     'locked: boolean'
          True if the guest has locked this device from having its media
          removed
     'tray_open: boolean' (optional)
          True if the device's tray is open (only present if it has a
          tray)
     'dirty-bitmaps: array of BlockDirtyInfo' (optional)
          dirty bitmaps information (only present if the driver has one
          or more dirty bitmaps) (Since 2.0) Deprecated in 4.2; see
          BlockDeviceInfo instead.
     'io-status: BlockDeviceIoStatus' (optional)
          'BlockDeviceIoStatus'.  Only present if the device supports it
          and the VM is configured to stop on errors (supported device
          models: virtio-blk, IDE, SCSI except scsi-generic)
     'inserted: BlockDeviceInfo' (optional)
          'BlockDeviceInfo' describing the device if media is present

     Since: 0.14.0

 -- Object: BlockMeasureInfo

     Image file size calculation information.  This structure describes
     the size requirements for creating a new image file.

     The size requirements depend on the new image file format.  File
     size always equals virtual disk size for the 'raw' format, even for
     sparse POSIX files.  Compact formats such as 'qcow2' represent
     unallocated and zero regions efficiently so file size may be
     smaller than virtual disk size.

     The values are upper bounds that are guaranteed to fit the new
     image file.  Subsequent modification, such as internal snapshot or
     further bitmap creation, may require additional space and is not
     covered here.

     Members:
     'required: int'
          Size required for a new image file, in bytes, when copying
          just allocated guest-visible contents.
     'fully-allocated: int'
          Image file size, in bytes, once data has been written to all
          sectors, when copying just guest-visible contents.
     'bitmaps: int' (optional)
          Additional size required if all the top-level bitmap metadata
          in the source image were to be copied to the destination,
          present only when source and destination both support
          persistent bitmaps.  (since 5.1)

     Since: 2.10

 -- Command: query-block

     Get a list of BlockInfo for all virtual block devices.

     Returns: a list of 'BlockInfo' describing each virtual block
     device.  Filter nodes that were created implicitly are skipped
     over.

     Since: 0.14.0

     Example:
          -> { "execute": "query-block" }
          <- {
                "return":[
                   {
                      "io-status": "ok",
                      "device":"ide0-hd0",
                      "locked":false,
                      "removable":false,
                      "inserted":{
                         "ro":false,
                         "drv":"qcow2",
                         "encrypted":false,
                         "file":"disks/test.qcow2",
                         "backing_file_depth":1,
                         "bps":1000000,
                         "bps_rd":0,
                         "bps_wr":0,
                         "iops":1000000,
                         "iops_rd":0,
                         "iops_wr":0,
                         "bps_max": 8000000,
                         "bps_rd_max": 0,
                         "bps_wr_max": 0,
                         "iops_max": 0,
                         "iops_rd_max": 0,
                         "iops_wr_max": 0,
                         "iops_size": 0,
                         "detect_zeroes": "on",
                         "write_threshold": 0,
                         "image":{
                            "filename":"disks/test.qcow2",
                            "format":"qcow2",
                            "virtual-size":2048000,
                            "backing_file":"base.qcow2",
                            "full-backing-filename":"disks/base.qcow2",
                            "backing-filename-format":"qcow2",
                            "snapshots":[
                               {
                                  "id": "1",
                                  "name": "snapshot1",
                                  "vm-state-size": 0,
                                  "date-sec": 10000200,
                                  "date-nsec": 12,
                                  "vm-clock-sec": 206,
                                  "vm-clock-nsec": 30
                               }
                            ],
                            "backing-image":{
                                "filename":"disks/base.qcow2",
                                "format":"qcow2",
                                "virtual-size":2048000
                            }
                         }
                      },
                      "qdev": "ide_disk",
                      "type":"unknown"
                   },
                   {
                      "io-status": "ok",
                      "device":"ide1-cd0",
                      "locked":false,
                      "removable":true,
                      "qdev": "/machine/unattached/device[23]",
                      "tray_open": false,
                      "type":"unknown"
                   },
                   {
                      "device":"floppy0",
                      "locked":false,
                      "removable":true,
                      "qdev": "/machine/unattached/device[20]",
                      "type":"unknown"
                   },
                   {
                      "device":"sd0",
                      "locked":false,
                      "removable":true,
                      "type":"unknown"
                   }
                ]
             }

 -- Object: BlockDeviceTimedStats

     Statistics of a block device during a given interval of time.

     Members:
     'interval_length: int'
          Interval used for calculating the statistics, in seconds.
     'min_rd_latency_ns: int'
          Minimum latency of read operations in the defined interval, in
          nanoseconds.
     'min_wr_latency_ns: int'
          Minimum latency of write operations in the defined interval,
          in nanoseconds.
     'min_flush_latency_ns: int'
          Minimum latency of flush operations in the defined interval,
          in nanoseconds.
     'max_rd_latency_ns: int'
          Maximum latency of read operations in the defined interval, in
          nanoseconds.
     'max_wr_latency_ns: int'
          Maximum latency of write operations in the defined interval,
          in nanoseconds.
     'max_flush_latency_ns: int'
          Maximum latency of flush operations in the defined interval,
          in nanoseconds.
     'avg_rd_latency_ns: int'
          Average latency of read operations in the defined interval, in
          nanoseconds.
     'avg_wr_latency_ns: int'
          Average latency of write operations in the defined interval,
          in nanoseconds.
     'avg_flush_latency_ns: int'
          Average latency of flush operations in the defined interval,
          in nanoseconds.
     'avg_rd_queue_depth: number'
          Average number of pending read operations in the defined
          interval.
     'avg_wr_queue_depth: number'
          Average number of pending write operations in the defined
          interval.

     Since: 2.5

 -- Object: BlockDeviceStats

     Statistics of a virtual block device or a block backing device.

     Members:
     'rd_bytes: int'
          The number of bytes read by the device.
     'wr_bytes: int'
          The number of bytes written by the device.
     'unmap_bytes: int'
          The number of bytes unmapped by the device (Since 4.2)
     'rd_operations: int'
          The number of read operations performed by the device.
     'wr_operations: int'
          The number of write operations performed by the device.
     'flush_operations: int'
          The number of cache flush operations performed by the device
          (since 0.15.0)
     'unmap_operations: int'
          The number of unmap operations performed by the device (Since
          4.2)
     'rd_total_time_ns: int'
          Total time spent on reads in nanoseconds (since 0.15.0).
     'wr_total_time_ns: int'
          Total time spent on writes in nanoseconds (since 0.15.0).
     'flush_total_time_ns: int'
          Total time spent on cache flushes in nanoseconds (since
          0.15.0).
     'unmap_total_time_ns: int'
          Total time spent on unmap operations in nanoseconds (Since
          4.2)
     'wr_highest_offset: int'
          The offset after the greatest byte written to the device.  The
          intended use of this information is for growable sparse files
          (like qcow2) that are used on top of a physical device.
     'rd_merged: int'
          Number of read requests that have been merged into another
          request (Since 2.3).
     'wr_merged: int'
          Number of write requests that have been merged into another
          request (Since 2.3).
     'unmap_merged: int'
          Number of unmap requests that have been merged into another
          request (Since 4.2)
     'idle_time_ns: int' (optional)
          Time since the last I/O operation, in nanoseconds.  If the
          field is absent it means that there haven't been any
          operations yet (Since 2.5).
     'failed_rd_operations: int'
          The number of failed read operations performed by the device
          (Since 2.5)
     'failed_wr_operations: int'
          The number of failed write operations performed by the device
          (Since 2.5)
     'failed_flush_operations: int'
          The number of failed flush operations performed by the device
          (Since 2.5)
     'failed_unmap_operations: int'
          The number of failed unmap operations performed by the device
          (Since 4.2)
     'invalid_rd_operations: int'
          The number of invalid read operations performed by the device
          (Since 2.5)
     'invalid_wr_operations: int'
          The number of invalid write operations performed by the device
          (Since 2.5)
     'invalid_flush_operations: int'
          The number of invalid flush operations performed by the device
          (Since 2.5)
     'invalid_unmap_operations: int'
          The number of invalid unmap operations performed by the device
          (Since 4.2)
     'account_invalid: boolean'
          Whether invalid operations are included in the last access
          statistics (Since 2.5)
     'account_failed: boolean'
          Whether failed operations are included in the latency and last
          access statistics (Since 2.5)
     'timed_stats: array of BlockDeviceTimedStats'
          Statistics specific to the set of previously defined intervals
          of time (Since 2.5)
     'rd_latency_histogram: BlockLatencyHistogramInfo' (optional)
          'BlockLatencyHistogramInfo'.  (Since 4.0)
     'wr_latency_histogram: BlockLatencyHistogramInfo' (optional)
          'BlockLatencyHistogramInfo'.  (Since 4.0)
     'flush_latency_histogram: BlockLatencyHistogramInfo' (optional)
          'BlockLatencyHistogramInfo'.  (Since 4.0)

     Since: 0.14.0

 -- Object: BlockStatsSpecificFile

     File driver statistics

     Members:
     'discard-nb-ok: int'
          The number of successful discard operations performed by the
          driver.
     'discard-nb-failed: int'
          The number of failed discard operations performed by the
          driver.
     'discard-bytes-ok: int'
          The number of bytes discarded by the driver.

     Since: 4.2

 -- Object: BlockStatsSpecific

     Block driver specific statistics

     Members:
     'driver: BlockdevDriver'
          Not documented
     The members of 'BlockStatsSpecificFile' when 'driver' is "file"
     The members of 'BlockStatsSpecificFile' when 'driver' is "host_device"

     Since: 4.2

 -- Object: BlockStats

     Statistics of a virtual block device or a block backing device.

     Members:
     'device: string' (optional)
          If the stats are for a virtual block device, the name
          corresponding to the virtual block device.
     'node-name: string' (optional)
          The node name of the device.  (Since 2.3)
     'qdev: string' (optional)
          The qdev ID, or if no ID is assigned, the QOM path of the
          block device.  (since 3.0)
     'stats: BlockDeviceStats'
          A 'BlockDeviceStats' for the device.
     'driver-specific: BlockStatsSpecific' (optional)
          Optional driver-specific stats.  (Since 4.2)
     'parent: BlockStats' (optional)
          This describes the file block device if it has one.  Contains
          recursively the statistics of the underlying protocol (e.g.
          the host file for a qcow2 image).  If there is no underlying
          protocol, this field is omitted
     'backing: BlockStats' (optional)
          This describes the backing block device if it has one.  (Since
          2.0)

     Since: 0.14.0

 -- Command: query-blockstats

     Query the 'BlockStats' for all virtual block devices.

     Arguments:
     'query-nodes: boolean' (optional)
          If true, the command will query all the block nodes that have
          a node name, in a list which will include "parent"
          information, but not "backing".  If false or omitted, the
          behavior is as before - query all the device backends,
          recursively including their "parent" and "backing".  Filter
          nodes that were created implicitly are skipped over in this
          mode.  (Since 2.3)

     Returns: A list of 'BlockStats' for each virtual block devices.

     Since: 0.14.0

     Example:
          -> { "execute": "query-blockstats" }
          <- {
                "return":[
                   {
                      "device":"ide0-hd0",
                      "parent":{
                         "stats":{
                            "wr_highest_offset":3686448128,
                            "wr_bytes":9786368,
                            "wr_operations":751,
                            "rd_bytes":122567168,
                            "rd_operations":36772
                            "wr_total_times_ns":313253456
                            "rd_total_times_ns":3465673657
                            "flush_total_times_ns":49653
                            "flush_operations":61,
                            "rd_merged":0,
                            "wr_merged":0,
                            "idle_time_ns":2953431879,
                            "account_invalid":true,
                            "account_failed":false
                         }
                      },
                      "stats":{
                         "wr_highest_offset":2821110784,
                         "wr_bytes":9786368,
                         "wr_operations":692,
                         "rd_bytes":122739200,
                         "rd_operations":36604
                         "flush_operations":51,
                         "wr_total_times_ns":313253456
                         "rd_total_times_ns":3465673657
                         "flush_total_times_ns":49653,
                         "rd_merged":0,
                         "wr_merged":0,
                         "idle_time_ns":2953431879,
                         "account_invalid":true,
                         "account_failed":false
                      },
                      "qdev": "/machine/unattached/device[23]"
                   },
                   {
                      "device":"ide1-cd0",
                      "stats":{
                         "wr_highest_offset":0,
                         "wr_bytes":0,
                         "wr_operations":0,
                         "rd_bytes":0,
                         "rd_operations":0
                         "flush_operations":0,
                         "wr_total_times_ns":0
                         "rd_total_times_ns":0
                         "flush_total_times_ns":0,
                         "rd_merged":0,
                         "wr_merged":0,
                         "account_invalid":false,
                         "account_failed":false
                      },
                      "qdev": "/machine/unattached/device[24]"
                   },
                   {
                      "device":"floppy0",
                      "stats":{
                         "wr_highest_offset":0,
                         "wr_bytes":0,
                         "wr_operations":0,
                         "rd_bytes":0,
                         "rd_operations":0
                         "flush_operations":0,
                         "wr_total_times_ns":0
                         "rd_total_times_ns":0
                         "flush_total_times_ns":0,
                         "rd_merged":0,
                         "wr_merged":0,
                         "account_invalid":false,
                         "account_failed":false
                      },
                      "qdev": "/machine/unattached/device[16]"
                   },
                   {
                      "device":"sd0",
                      "stats":{
                         "wr_highest_offset":0,
                         "wr_bytes":0,
                         "wr_operations":0,
                         "rd_bytes":0,
                         "rd_operations":0
                         "flush_operations":0,
                         "wr_total_times_ns":0
                         "rd_total_times_ns":0
                         "flush_total_times_ns":0,
                         "rd_merged":0,
                         "wr_merged":0,
                         "account_invalid":false,
                         "account_failed":false
                      }
                   }
                ]
             }

 -- Enum: BlockdevOnError

     An enumeration of possible behaviors for errors on I/O operations.
     The exact meaning depends on whether the I/O was initiated by a
     guest or by a block job

     Values:
     'report'
          for guest operations, report the error to the guest; for jobs,
          cancel the job
     'ignore'
          ignore the error, only report a QMP event (BLOCK_IO_ERROR or
          BLOCK_JOB_ERROR)
     'enospc'
          same as 'stop' on ENOSPC, same as 'report' otherwise.
     'stop'
          for guest operations, stop the virtual machine; for jobs,
          pause the job
     'auto'
          inherit the error handling policy of the backend (since: 2.7)

     Since: 1.3

 -- Enum: MirrorSyncMode

     An enumeration of possible behaviors for the initial
     synchronization phase of storage mirroring.

     Values:
     'top'
          copies data in the topmost image to the destination
     'full'
          copies data from all images to the destination
     'none'
          only copy data written from now on
     'incremental'
          only copy data described by the dirty bitmap.  (since: 2.4)
     'bitmap'
          only copy data described by the dirty bitmap.  (since: 4.2)
          Behavior on completion is determined by the BitmapSyncMode.

     Since: 1.3

 -- Enum: BitmapSyncMode

     An enumeration of possible behaviors for the synchronization of a
     bitmap when used for data copy operations.

     Values:
     'on-success'
          The bitmap is only synced when the operation is successful.
          This is the behavior always used for 'INCREMENTAL' backups.
     'never'
          The bitmap is never synchronized with the operation, and is
          treated solely as a read-only manifest of blocks to copy.
     'always'
          The bitmap is always synchronized with the operation,
          regardless of whether or not the operation was successful.

     Since: 4.2

 -- Enum: MirrorCopyMode

     An enumeration whose values tell the mirror block job when to
     trigger writes to the target.

     Values:
     'background'
          copy data in background only.
     'write-blocking'
          when data is written to the source, write it (synchronously)
          to the target as well.  In addition, data is copied in
          background just like in 'background' mode.

     Since: 3.0

 -- Object: BlockJobInfo

     Information about a long-running block device operation.

     Members:
     'type: string'
          the job type ('stream' for image streaming)
     'device: string'
          The job identifier.  Originally the device name but other
          values are allowed since QEMU 2.7
     'len: int'
          Estimated 'offset' value at the completion of the job.  This
          value can arbitrarily change while the job is running, in both
          directions.
     'offset: int'
          Progress made until now.  The unit is arbitrary and the value
          can only meaningfully be used for the ratio of 'offset' to
          'len'.  The value is monotonically increasing.
     'busy: boolean'
          false if the job is known to be in a quiescent state, with no
          pending I/O. Since 1.3.
     'paused: boolean'
          whether the job is paused or, if 'busy' is true, will pause
          itself as soon as possible.  Since 1.3.
     'speed: int'
          the rate limit, bytes per second
     'io-status: BlockDeviceIoStatus'
          the status of the job (since 1.3)
     'ready: boolean'
          true if the job may be completed (since 2.2)
     'status: JobStatus'
          Current job state/status (since 2.12)
     'auto-finalize: boolean'
          Job will finalize itself when PENDING, moving to the CONCLUDED
          state.  (since 2.12)
     'auto-dismiss: boolean'
          Job will dismiss itself when CONCLUDED, moving to the NULL
          state and disappearing from the query list.  (since 2.12)
     'error: string' (optional)
          Error information if the job did not complete successfully.
          Not set if the job completed successfully.  (since 2.12.1)

     Since: 1.1

 -- Command: query-block-jobs

     Return information about long-running block device operations.

     Returns: a list of 'BlockJobInfo' for each active block job

     Since: 1.1

 -- Command: block_passwd

     This command sets the password of a block device that has not been
     open with a password and requires one.

     This command is now obsolete and will always return an error since
     2.10

     Arguments:
     'device: string' (optional)
          Not documented
     'node-name: string' (optional)
          Not documented
     'password: string'
          Not documented

 -- Command: block_resize

     Resize a block image while a guest is running.

     Either 'device' or 'node-name' must be set but not both.

     Arguments:
     'device: string' (optional)
          the name of the device to get the image resized
     'node-name: string' (optional)
          graph node name to get the image resized (Since 2.0)
     'size: int'
          new image size in bytes

     Returns: nothing on success If 'device' is not a valid block
     device, DeviceNotFound

     Since: 0.14.0

     Example:
          -> { "execute": "block_resize",
               "arguments": { "device": "scratch", "size": 1073741824 } }
          <- { "return": {} }

 -- Enum: NewImageMode

     An enumeration that tells QEMU how to set the backing file path in
     a new image file.

     Values:
     'existing'
          QEMU should look for an existing image file.
     'absolute-paths'
          QEMU should create a new image with absolute paths for the
          backing file.  If there is no backing file available, the new
          image will not be backed either.

     Since: 1.1

 -- Object: BlockdevSnapshotSync

     Either 'device' or 'node-name' must be set but not both.

     Members:
     'device: string' (optional)
          the name of the device to take a snapshot of.
     'node-name: string' (optional)
          graph node name to generate the snapshot from (Since 2.0)
     'snapshot-file: string'
          the target of the new overlay image.  If the file exists, or
          if it is a device, the overlay will be created in the existing
          file/device.  Otherwise, a new file will be created.
     'snapshot-node-name: string' (optional)
          the graph node name of the new image (Since 2.0)
     'format: string' (optional)
          the format of the overlay image, default is 'qcow2'.
     'mode: NewImageMode' (optional)
          whether and how QEMU should create a new image, default is
          'absolute-paths'.

 -- Object: BlockdevSnapshot

     Members:
     'node: string'
          device or node name that will have a snapshot taken.
     'overlay: string'
          reference to the existing block device that will become the
          overlay of 'node', as part of taking the snapshot.  It must
          not have a current backing file (this can be achieved by
          passing "backing": null to blockdev-add).

     Since: 2.5

 -- Object: BackupCommon

     Members:
     'job-id: string' (optional)
          identifier for the newly-created block job.  If omitted, the
          device name will be used.  (Since 2.7)
     'device: string'
          the device name or node-name of a root node which should be
          copied.
     'sync: MirrorSyncMode'
          what parts of the disk image should be copied to the
          destination (all the disk, only the sectors allocated in the
          topmost image, from a dirty bitmap, or only new I/O).
     'speed: int' (optional)
          the maximum speed, in bytes per second.  The default is 0, for
          unlimited.
     'bitmap: string' (optional)
          The name of a dirty bitmap to use.  Must be present if sync is
          "bitmap" or "incremental".  Can be present if sync is "full"
          or "top".  Must not be present otherwise.  (Since 2.4
          (drive-backup), 3.1 (blockdev-backup))
     'bitmap-mode: BitmapSyncMode' (optional)
          Specifies the type of data the bitmap should contain after the
          operation concludes.  Must be present if a bitmap was
          provided, Must NOT be present otherwise.  (Since 4.2)
     'compress: boolean' (optional)
          true to compress data, if the target format supports it.
          (default: false) (since 2.8)
     'on-source-error: BlockdevOnError' (optional)
          the action to take on an error on the source, default
          'report'.  'stop' and 'enospc' can only be used if the block
          device supports io-status (see BlockInfo).
     'on-target-error: BlockdevOnError' (optional)
          the action to take on an error on the target, default 'report'
          (no limitations, since this applies to a different block
          device than 'device').
     'auto-finalize: boolean' (optional)
          When false, this job will wait in a PENDING state after it has
          finished its work, waiting for 'block-job-finalize' before
          making any block graph changes.  When true, this job will
          automatically perform its abort or commit actions.  Defaults
          to true.  (Since 2.12)
     'auto-dismiss: boolean' (optional)
          When false, this job will wait in a CONCLUDED state after it
          has completely ceased all work, and awaits
          'block-job-dismiss'.  When true, this job will automatically
          disappear from the query list without user intervention.
          Defaults to true.  (Since 2.12)
     'filter-node-name: string' (optional)
          the node name that should be assigned to the filter driver
          that the backup job inserts into the graph above node
          specified by 'drive'.  If this option is not given, a node
          name is autogenerated.  (Since: 4.2)

     Note: 'on-source-error' and 'on-target-error' only affect
     background I/O. If an error occurs during a guest write request,
     the device's rerror/werror actions will be used.

     Since: 4.2

 -- Object: DriveBackup

     Members:
     'target: string'
          the target of the new image.  If the file exists, or if it is
          a device, the existing file/device will be used as the new
          destination.  If it does not exist, a new file will be
          created.
     'format: string' (optional)
          the format of the new destination, default is to probe if
          'mode' is 'existing', else the format of the source
     'mode: NewImageMode' (optional)
          whether and how QEMU should create a new image, default is
          'absolute-paths'.
     The members of 'BackupCommon'

     Since: 1.6

 -- Object: BlockdevBackup

     Members:
     'target: string'
          the device name or node-name of the backup target node.
     The members of 'BackupCommon'

     Since: 2.3

 -- Command: blockdev-snapshot-sync

     Takes a synchronous snapshot of a block device.

     For the arguments, see the documentation of BlockdevSnapshotSync.

     Returns: nothing on success If 'device' is not a valid block
     device, DeviceNotFound

     Since: 0.14.0

     Example:
          -> { "execute": "blockdev-snapshot-sync",
               "arguments": { "device": "ide-hd0",
                              "snapshot-file":
                              "/some/place/my-image",
                              "format": "qcow2" } }
          <- { "return": {} }

 -- Command: blockdev-snapshot

     Takes a snapshot of a block device.

     Take a snapshot, by installing 'node' as the backing image of
     'overlay'.  Additionally, if 'node' is associated with a block
     device, the block device changes to using 'overlay' as its new
     active image.

     For the arguments, see the documentation of BlockdevSnapshot.

     Features:
     'allow-write-only-overlay'
          If present, the check whether this operation is safe was
          relaxed so that it can be used to change backing file of a
          destination of a blockdev-mirror.  (since 5.0)

     Since: 2.5

     Example:
          -> { "execute": "blockdev-add",
               "arguments": { "driver": "qcow2",
                              "node-name": "node1534",
                              "file": { "driver": "file",
                                        "filename": "hd1.qcow2" },
                              "backing": null } }

          <- { "return": {} }

          -> { "execute": "blockdev-snapshot",
               "arguments": { "node": "ide-hd0",
                              "overlay": "node1534" } }
          <- { "return": {} }

 -- Command: change-backing-file

     Change the backing file in the image file metadata.  This does not
     cause QEMU to reopen the image file to reparse the backing filename
     (it may, however, perform a reopen to change permissions from r/o
     -> r/w -> r/o, if needed).  The new backing file string is written
     into the image file metadata, and the QEMU internal strings are
     updated.

     Arguments:
     'image-node-name: string'
          The name of the block driver state node of the image to
          modify.  The "device" argument is used to verify
          "image-node-name" is in the chain described by "device".
     'device: string'
          The device name or node-name of the root node that owns
          image-node-name.
     'backing-file: string'
          The string to write as the backing file.  This string is not
          validated, so care should be taken when specifying the string
          or the image chain may not be able to be reopened again.

     Returns: Nothing on success

     If "device" does not exist or cannot be determined, DeviceNotFound

     Since: 2.1

 -- Command: block-commit

     Live commit of data from overlay image nodes into backing nodes -
     i.e., writes data between 'top' and 'base' into 'base'.

     Arguments:
     'job-id: string' (optional)
          identifier for the newly-created block job.  If omitted, the
          device name will be used.  (Since 2.7)
     'device: string'
          the device name or node-name of a root node
     'base-node: string' (optional)
          The node name of the backing image to write data into.  If not
          specified, this is the deepest backing image.  (since: 3.1)
     'base: string' (optional)
          Same as 'base-node', except that it is a file name rather than
          a node name.  This must be the exact filename string that was
          used to open the node; other strings, even if addressing the
          same file, are not accepted (deprecated, use 'base-node'
          instead)
     'top-node: string' (optional)
          The node name of the backing image within the image chain
          which contains the topmost data to be committed down.  If not
          specified, this is the active layer.  (since: 3.1)
     'top: string' (optional)
          Same as 'top-node', except that it is a file name rather than
          a node name.  This must be the exact filename string that was
          used to open the node; other strings, even if addressing the
          same file, are not accepted (deprecated, use 'base-node'
          instead)
     'backing-file: string' (optional)
          The backing file string to write into the overlay image of
          'top'.  If 'top' is the active layer, specifying a backing
          file string is an error.  This filename is not validated.

          If a pathname string is such that it cannot be resolved by
          QEMU, that means that subsequent QMP or HMP commands must use
          node-names for the image in question, as filename lookup
          methods will fail.

          If not specified, QEMU will automatically determine the
          backing file string to use, or error out if there is no
          obvious choice.  Care should be taken when specifying the
          string, to specify a valid filename or protocol.  (Since 2.1)

          If top == base, that is an error.  If top == active, the job
          will not be completed by itself, user needs to complete the
          job with the block-job-complete command after getting the
          ready event.  (Since 2.0)

          If the base image is smaller than top, then the base image
          will be resized to be the same size as top.  If top is smaller
          than the base image, the base will not be truncated.  If you
          want the base image size to match the size of the smaller top,
          you can safely truncate it yourself once the commit operation
          successfully completes.
     'speed: int' (optional)
          the maximum speed, in bytes per second
     'filter-node-name: string' (optional)
          the node name that should be assigned to the filter driver
          that the commit job inserts into the graph above 'top'.  If
          this option is not given, a node name is autogenerated.
          (Since: 2.9)
     'auto-finalize: boolean' (optional)
          When false, this job will wait in a PENDING state after it has
          finished its work, waiting for 'block-job-finalize' before
          making any block graph changes.  When true, this job will
          automatically perform its abort or commit actions.  Defaults
          to true.  (Since 3.1)
     'auto-dismiss: boolean' (optional)
          When false, this job will wait in a CONCLUDED state after it
          has completely ceased all work, and awaits
          'block-job-dismiss'.  When true, this job will automatically
          disappear from the query list without user intervention.
          Defaults to true.  (Since 3.1)

     Returns: Nothing on success If 'device' does not exist,
     DeviceNotFound Any other error returns a GenericError.

     Since: 1.3

     Example:
          -> { "execute": "block-commit",
               "arguments": { "device": "virtio0",
                              "top": "/tmp/snap1.qcow2" } }
          <- { "return": {} }

 -- Command: drive-backup

     Start a point-in-time copy of a block device to a new destination.
     The status of ongoing drive-backup operations can be checked with
     query-block-jobs where the BlockJobInfo.type field has the value
     'backup'.  The operation can be stopped before it has completed
     using the block-job-cancel command.

     Arguments: the members of 'DriveBackup'

     Returns: nothing on success If 'device' is not a valid block
     device, GenericError

     Since: 1.6

     Example:
          -> { "execute": "drive-backup",
               "arguments": { "device": "drive0",
                              "sync": "full",
                              "target": "backup.img" } }
          <- { "return": {} }

 -- Command: blockdev-backup

     Start a point-in-time copy of a block device to a new destination.
     The status of ongoing blockdev-backup operations can be checked
     with query-block-jobs where the BlockJobInfo.type field has the
     value 'backup'.  The operation can be stopped before it has
     completed using the block-job-cancel command.

     Arguments: the members of 'BlockdevBackup'

     Returns: nothing on success If 'device' is not a valid block
     device, DeviceNotFound

     Since: 2.3

     Example:
          -> { "execute": "blockdev-backup",
               "arguments": { "device": "src-id",
                              "sync": "full",
                              "target": "tgt-id" } }
          <- { "return": {} }

 -- Command: query-named-block-nodes

     Get the named block driver list

     Returns: the list of BlockDeviceInfo

     Since: 2.0

     Example:
          -> { "execute": "query-named-block-nodes" }
          <- { "return": [ { "ro":false,
                             "drv":"qcow2",
                             "encrypted":false,
                             "file":"disks/test.qcow2",
                             "node-name": "my-node",
                             "backing_file_depth":1,
                             "bps":1000000,
                             "bps_rd":0,
                             "bps_wr":0,
                             "iops":1000000,
                             "iops_rd":0,
                             "iops_wr":0,
                             "bps_max": 8000000,
                             "bps_rd_max": 0,
                             "bps_wr_max": 0,
                             "iops_max": 0,
                             "iops_rd_max": 0,
                             "iops_wr_max": 0,
                             "iops_size": 0,
                             "write_threshold": 0,
                             "image":{
                                "filename":"disks/test.qcow2",
                                "format":"qcow2",
                                "virtual-size":2048000,
                                "backing_file":"base.qcow2",
                                "full-backing-filename":"disks/base.qcow2",
                                "backing-filename-format":"qcow2",
                                "snapshots":[
                                   {
                                      "id": "1",
                                      "name": "snapshot1",
                                      "vm-state-size": 0,
                                      "date-sec": 10000200,
                                      "date-nsec": 12,
                                      "vm-clock-sec": 206,
                                      "vm-clock-nsec": 30
                                   }
                                ],
                                "backing-image":{
                                    "filename":"disks/base.qcow2",
                                    "format":"qcow2",
                                    "virtual-size":2048000
                                }
                             } } ] }

 -- Enum: XDbgBlockGraphNodeType

     Values:
     'block-backend'
          corresponds to BlockBackend
     'block-job'
          corresonds to BlockJob
     'block-driver'
          corresponds to BlockDriverState

     Since: 4.0

 -- Object: XDbgBlockGraphNode

     Members:
     'id: int'
          Block graph node identifier.  This 'id' is generated only for
          x-debug-query-block-graph and does not relate to any other
          identifiers in Qemu.
     'type: XDbgBlockGraphNodeType'
          Type of graph node.  Can be one of block-backend, block-job or
          block-driver-state.
     'name: string'
          Human readable name of the node.  Corresponds to node-name for
          block-driver-state nodes; is not guaranteed to be unique in
          the whole graph (with block-jobs and block-backends).

     Since: 4.0

 -- Enum: BlockPermission

     Enum of base block permissions.

     Values:
     'consistent-read'
          A user that has the "permission" of consistent reads is
          guaranteed that their view of the contents of the block device
          is complete and self-consistent, representing the contents of
          a disk at a specific point.  For most block devices (including
          their backing files) this is true, but the property cannot be
          maintained in a few situations like for intermediate nodes of
          a commit block job.
     'write'
          This permission is required to change the visible disk
          contents.
     'write-unchanged'
          This permission (which is weaker than BLK_PERM_WRITE) is both
          enough and required for writes to the block node when the
          caller promises that the visible disk content doesn't change.
          As the BLK_PERM_WRITE permission is strictly stronger, either
          is sufficient to perform an unchanging write.
     'resize'
          This permission is required to change the size of a block
          node.
     'graph-mod'
          This permission is required to change the node that this
          BdrvChild points to.

     Since: 4.0

 -- Object: XDbgBlockGraphEdge

     Block Graph edge description for x-debug-query-block-graph.

     Members:
     'parent: int'
          parent id
     'child: int'
          child id
     'name: string'
          name of the relation (examples are 'file' and 'backing')
     'perm: array of BlockPermission'
          granted permissions for the parent operating on the child
     'shared-perm: array of BlockPermission'
          permissions that can still be granted to other users of the
          child while it is still attached to this parent

     Since: 4.0

 -- Object: XDbgBlockGraph

     Block Graph - list of nodes and list of edges.

     Members:
     'nodes: array of XDbgBlockGraphNode'
          Not documented
     'edges: array of XDbgBlockGraphEdge'
          Not documented

     Since: 4.0

 -- Command: x-debug-query-block-graph

     Get the block graph.

     Since: 4.0

 -- Command: drive-mirror

     Start mirroring a block device's writes to a new destination.
     target specifies the target of the new image.  If the file exists,
     or if it is a device, it will be used as the new destination for
     writes.  If it does not exist, a new file will be created.  format
     specifies the format of the mirror image, default is to probe if
     mode='existing', else the format of the source.

     Arguments: the members of 'DriveMirror'

     Returns: nothing on success If 'device' is not a valid block
     device, GenericError

     Since: 1.3

     Example:
          -> { "execute": "drive-mirror",
               "arguments": { "device": "ide-hd0",
                              "target": "/some/place/my-image",
                              "sync": "full",
                              "format": "qcow2" } }
          <- { "return": {} }

 -- Object: DriveMirror

     A set of parameters describing drive mirror setup.

     Members:
     'job-id: string' (optional)
          identifier for the newly-created block job.  If omitted, the
          device name will be used.  (Since 2.7)
     'device: string'
          the device name or node-name of a root node whose writes
          should be mirrored.
     'target: string'
          the target of the new image.  If the file exists, or if it is
          a device, the existing file/device will be used as the new
          destination.  If it does not exist, a new file will be
          created.
     'format: string' (optional)
          the format of the new destination, default is to probe if
          'mode' is 'existing', else the format of the source
     'node-name: string' (optional)
          the new block driver state node name in the graph (Since 2.1)
     'replaces: string' (optional)
          with sync=full graph node name to be replaced by the new image
          when a whole image copy is done.  This can be used to repair
          broken Quorum files.  (Since 2.1)
     'mode: NewImageMode' (optional)
          whether and how QEMU should create a new image, default is
          'absolute-paths'.
     'speed: int' (optional)
          the maximum speed, in bytes per second
     'sync: MirrorSyncMode'
          what parts of the disk image should be copied to the
          destination (all the disk, only the sectors allocated in the
          topmost image, or only new I/O).
     'granularity: int' (optional)
          granularity of the dirty bitmap, default is 64K if the image
          format doesn't have clusters, 4K if the clusters are smaller
          than that, else the cluster size.  Must be a power of 2
          between 512 and 64M (since 1.4).
     'buf-size: int' (optional)
          maximum amount of data in flight from source to target (since
          1.4).
     'on-source-error: BlockdevOnError' (optional)
          the action to take on an error on the source, default
          'report'.  'stop' and 'enospc' can only be used if the block
          device supports io-status (see BlockInfo).
     'on-target-error: BlockdevOnError' (optional)
          the action to take on an error on the target, default 'report'
          (no limitations, since this applies to a different block
          device than 'device').
     'unmap: boolean' (optional)
          Whether to try to unmap target sectors where source has only
          zero.  If true, and target unallocated sectors will read as
          zero, target image sectors will be unmapped; otherwise, zeroes
          will be written.  Both will result in identical contents.
          Default is true.  (Since 2.4)
     'copy-mode: MirrorCopyMode' (optional)
          when to copy data to the destination; defaults to 'background'
          (Since: 3.0)
     'auto-finalize: boolean' (optional)
          When false, this job will wait in a PENDING state after it has
          finished its work, waiting for 'block-job-finalize' before
          making any block graph changes.  When true, this job will
          automatically perform its abort or commit actions.  Defaults
          to true.  (Since 3.1)
     'auto-dismiss: boolean' (optional)
          When false, this job will wait in a CONCLUDED state after it
          has completely ceased all work, and awaits
          'block-job-dismiss'.  When true, this job will automatically
          disappear from the query list without user intervention.
          Defaults to true.  (Since 3.1)

     Since: 1.3

 -- Object: BlockDirtyBitmap

     Members:
     'node: string'
          name of device/node which the bitmap is tracking
     'name: string'
          name of the dirty bitmap

     Since: 2.4

 -- Object: BlockDirtyBitmapAdd

     Members:
     'node: string'
          name of device/node which the bitmap is tracking
     'name: string'
          name of the dirty bitmap (must be less than 1024 bytes)
     'granularity: int' (optional)
          the bitmap granularity, default is 64k for
          block-dirty-bitmap-add
     'persistent: boolean' (optional)
          the bitmap is persistent, i.e.  it will be saved to the
          corresponding block device image file on its close.  For now
          only Qcow2 disks support persistent bitmaps.  Default is false
          for block-dirty-bitmap-add.  (Since: 2.10)
     'disabled: boolean' (optional)
          the bitmap is created in the disabled state, which means that
          it will not track drive changes.  The bitmap may be enabled
          with block-dirty-bitmap-enable.  Default is false.  (Since:
          4.0)

     Since: 2.4

 -- Alternate: BlockDirtyBitmapMergeSource

     Members:
     'local: string'
          name of the bitmap, attached to the same node as target
          bitmap.
     'external: BlockDirtyBitmap'
          bitmap with specified node

     Since: 4.1

 -- Object: BlockDirtyBitmapMerge

     Members:
     'node: string'
          name of device/node which the 'target' bitmap is tracking
     'target: string'
          name of the destination dirty bitmap
     'bitmaps: array of BlockDirtyBitmapMergeSource'
          name(s) of the source dirty bitmap(s) at 'node' and/or fully
          specifed BlockDirtyBitmap elements.  The latter are supported
          since 4.1.

     Since: 4.0

 -- Command: block-dirty-bitmap-add

     Create a dirty bitmap with a name on the node, and start tracking
     the writes.

     Returns: nothing on success If 'node' is not a valid block device
     or node, DeviceNotFound If 'name' is already taken, GenericError
     with an explanation

     Since: 2.4

     Example:
          -> { "execute": "block-dirty-bitmap-add",
               "arguments": { "node": "drive0", "name": "bitmap0" } }
          <- { "return": {} }

 -- Command: block-dirty-bitmap-remove

     Stop write tracking and remove the dirty bitmap that was created
     with block-dirty-bitmap-add.  If the bitmap is persistent, remove
     it from its storage too.

     Returns: nothing on success If 'node' is not a valid block device
     or node, DeviceNotFound If 'name' is not found, GenericError with
     an explanation if 'name' is frozen by an operation, GenericError

     Since: 2.4

     Example:
          -> { "execute": "block-dirty-bitmap-remove",
               "arguments": { "node": "drive0", "name": "bitmap0" } }
          <- { "return": {} }

 -- Command: block-dirty-bitmap-clear

     Clear (reset) a dirty bitmap on the device, so that an incremental
     backup from this point in time forward will only backup clusters
     modified after this clear operation.

     Returns: nothing on success If 'node' is not a valid block device,
     DeviceNotFound If 'name' is not found, GenericError with an
     explanation

     Since: 2.4

     Example:
          -> { "execute": "block-dirty-bitmap-clear",
               "arguments": { "node": "drive0", "name": "bitmap0" } }
          <- { "return": {} }

 -- Command: block-dirty-bitmap-enable

     Enables a dirty bitmap so that it will begin tracking disk changes.

     Returns: nothing on success If 'node' is not a valid block device,
     DeviceNotFound If 'name' is not found, GenericError with an
     explanation

     Since: 4.0

     Example:
          -> { "execute": "block-dirty-bitmap-enable",
               "arguments": { "node": "drive0", "name": "bitmap0" } }
          <- { "return": {} }

 -- Command: block-dirty-bitmap-disable

     Disables a dirty bitmap so that it will stop tracking disk changes.

     Returns: nothing on success If 'node' is not a valid block device,
     DeviceNotFound If 'name' is not found, GenericError with an
     explanation

     Since: 4.0

     Example:
          -> { "execute": "block-dirty-bitmap-disable",
               "arguments": { "node": "drive0", "name": "bitmap0" } }
          <- { "return": {} }

 -- Command: block-dirty-bitmap-merge

     Merge dirty bitmaps listed in 'bitmaps' to the 'target' dirty
     bitmap.  Dirty bitmaps in 'bitmaps' will be unchanged, except if it
     also appears as the 'target' bitmap.  Any bits already set in
     'target' will still be set after the merge, i.e., this operation
     does not clear the target.  On error, 'target' is unchanged.

     The resulting bitmap will count as dirty any clusters that were
     dirty in any of the source bitmaps.  This can be used to achieve
     backup checkpoints, or in simpler usages, to copy bitmaps.

     Returns: nothing on success If 'node' is not a valid block device,
     DeviceNotFound If any bitmap in 'bitmaps' or 'target' is not found,
     GenericError If any of the bitmaps have different sizes or
     granularities, GenericError

     Since: 4.0

     Example:
          -> { "execute": "block-dirty-bitmap-merge",
               "arguments": { "node": "drive0", "target": "bitmap0",
                              "bitmaps": ["bitmap1"] } }
          <- { "return": {} }

 -- Object: BlockDirtyBitmapSha256

     SHA256 hash of dirty bitmap data

     Members:
     'sha256: string'
          ASCII representation of SHA256 bitmap hash

     Since: 2.10

 -- Command: x-debug-block-dirty-bitmap-sha256

     Get bitmap SHA256.

     Returns: BlockDirtyBitmapSha256 on success If 'node' is not a valid
     block device, DeviceNotFound If 'name' is not found or if hashing
     has failed, GenericError with an explanation

     Since: 2.10

 -- Command: blockdev-mirror

     Start mirroring a block device's writes to a new destination.

     Arguments:
     'job-id: string' (optional)
          identifier for the newly-created block job.  If omitted, the
          device name will be used.  (Since 2.7)
     'device: string'
          The device name or node-name of a root node whose writes
          should be mirrored.
     'target: string'
          the id or node-name of the block device to mirror to.  This
          mustn't be attached to guest.
     'replaces: string' (optional)
          with sync=full graph node name to be replaced by the new image
          when a whole image copy is done.  This can be used to repair
          broken Quorum files.
     'speed: int' (optional)
          the maximum speed, in bytes per second
     'sync: MirrorSyncMode'
          what parts of the disk image should be copied to the
          destination (all the disk, only the sectors allocated in the
          topmost image, or only new I/O).
     'granularity: int' (optional)
          granularity of the dirty bitmap, default is 64K if the image
          format doesn't have clusters, 4K if the clusters are smaller
          than that, else the cluster size.  Must be a power of 2
          between 512 and 64M
     'buf-size: int' (optional)
          maximum amount of data in flight from source to target
     'on-source-error: BlockdevOnError' (optional)
          the action to take on an error on the source, default
          'report'.  'stop' and 'enospc' can only be used if the block
          device supports io-status (see BlockInfo).
     'on-target-error: BlockdevOnError' (optional)
          the action to take on an error on the target, default 'report'
          (no limitations, since this applies to a different block
          device than 'device').
     'filter-node-name: string' (optional)
          the node name that should be assigned to the filter driver
          that the mirror job inserts into the graph above 'device'.  If
          this option is not given, a node name is autogenerated.
          (Since: 2.9)
     'copy-mode: MirrorCopyMode' (optional)
          when to copy data to the destination; defaults to 'background'
          (Since: 3.0)
     'auto-finalize: boolean' (optional)
          When false, this job will wait in a PENDING state after it has
          finished its work, waiting for 'block-job-finalize' before
          making any block graph changes.  When true, this job will
          automatically perform its abort or commit actions.  Defaults
          to true.  (Since 3.1)
     'auto-dismiss: boolean' (optional)
          When false, this job will wait in a CONCLUDED state after it
          has completely ceased all work, and awaits
          'block-job-dismiss'.  When true, this job will automatically
          disappear from the query list without user intervention.
          Defaults to true.  (Since 3.1)

     Returns: nothing on success.

     Since: 2.6

     Example:
          -> { "execute": "blockdev-mirror",
               "arguments": { "device": "ide-hd0",
                              "target": "target0",
                              "sync": "full" } }
          <- { "return": {} }

 -- Command: block_set_io_throttle

     Change I/O throttle limits for a block drive.

     Since QEMU 2.4, each device with I/O limits is member of a throttle
     group.

     If two or more devices are members of the same group, the limits
     will apply to the combined I/O of the whole group in a round-robin
     fashion.  Therefore, setting new I/O limits to a device will affect
     the whole group.

     The name of the group can be specified using the 'group' parameter.
     If the parameter is unset, it is assumed to be the current group of
     that device.  If it's not in any group yet, the name of the device
     will be used as the name for its group.

     The 'group' parameter can also be used to move a device to a
     different group.  In this case the limits specified in the
     parameters will be applied to the new group only.

     I/O limits can be disabled by setting all of them to 0.  In this
     case the device will be removed from its group and the rest of its
     members will not be affected.  The 'group' parameter is ignored.

     Arguments: the members of 'BlockIOThrottle'

     Returns: Nothing on success If 'device' is not a valid block
     device, DeviceNotFound

     Since: 1.1

     Example:
          -> { "execute": "block_set_io_throttle",
               "arguments": { "id": "virtio-blk-pci0/virtio-backend",
                              "bps": 0,
                              "bps_rd": 0,
                              "bps_wr": 0,
                              "iops": 512,
                              "iops_rd": 0,
                              "iops_wr": 0,
                              "bps_max": 0,
                              "bps_rd_max": 0,
                              "bps_wr_max": 0,
                              "iops_max": 0,
                              "iops_rd_max": 0,
                              "iops_wr_max": 0,
                              "bps_max_length": 0,
                              "iops_size": 0 } }
          <- { "return": {} }

          -> { "execute": "block_set_io_throttle",
               "arguments": { "id": "ide0-1-0",
                              "bps": 1000000,
                              "bps_rd": 0,
                              "bps_wr": 0,
                              "iops": 0,
                              "iops_rd": 0,
                              "iops_wr": 0,
                              "bps_max": 8000000,
                              "bps_rd_max": 0,
                              "bps_wr_max": 0,
                              "iops_max": 0,
                              "iops_rd_max": 0,
                              "iops_wr_max": 0,
                              "bps_max_length": 60,
                              "iops_size": 0 } }
          <- { "return": {} }

 -- Object: BlockIOThrottle

     A set of parameters describing block throttling.

     Members:
     'device: string' (optional)
          Block device name (deprecated, use 'id' instead)
     'id: string' (optional)
          The name or QOM path of the guest device (since: 2.8)
     'bps: int'
          total throughput limit in bytes per second
     'bps_rd: int'
          read throughput limit in bytes per second
     'bps_wr: int'
          write throughput limit in bytes per second
     'iops: int'
          total I/O operations per second
     'iops_rd: int'
          read I/O operations per second
     'iops_wr: int'
          write I/O operations per second
     'bps_max: int' (optional)
          total throughput limit during bursts, in bytes (Since 1.7)
     'bps_rd_max: int' (optional)
          read throughput limit during bursts, in bytes (Since 1.7)
     'bps_wr_max: int' (optional)
          write throughput limit during bursts, in bytes (Since 1.7)
     'iops_max: int' (optional)
          total I/O operations per second during bursts, in bytes (Since
          1.7)
     'iops_rd_max: int' (optional)
          read I/O operations per second during bursts, in bytes (Since
          1.7)
     'iops_wr_max: int' (optional)
          write I/O operations per second during bursts, in bytes (Since
          1.7)
     'bps_max_length: int' (optional)
          maximum length of the 'bps_max' burst period, in seconds.  It
          must only be set if 'bps_max' is set as well.  Defaults to 1.
          (Since 2.6)
     'bps_rd_max_length: int' (optional)
          maximum length of the 'bps_rd_max' burst period, in seconds.
          It must only be set if 'bps_rd_max' is set as well.  Defaults
          to 1.  (Since 2.6)
     'bps_wr_max_length: int' (optional)
          maximum length of the 'bps_wr_max' burst period, in seconds.
          It must only be set if 'bps_wr_max' is set as well.  Defaults
          to 1.  (Since 2.6)
     'iops_max_length: int' (optional)
          maximum length of the 'iops' burst period, in seconds.  It
          must only be set if 'iops_max' is set as well.  Defaults to 1.
          (Since 2.6)
     'iops_rd_max_length: int' (optional)
          maximum length of the 'iops_rd_max' burst period, in seconds.
          It must only be set if 'iops_rd_max' is set as well.  Defaults
          to 1.  (Since 2.6)
     'iops_wr_max_length: int' (optional)
          maximum length of the 'iops_wr_max' burst period, in seconds.
          It must only be set if 'iops_wr_max' is set as well.  Defaults
          to 1.  (Since 2.6)
     'iops_size: int' (optional)
          an I/O size in bytes (Since 1.7)
     'group: string' (optional)
          throttle group name (Since 2.4)

     Since: 1.1

 -- Object: ThrottleLimits

     Limit parameters for throttling.  Since some limit combinations are
     illegal, limits should always be set in one transaction.  All
     fields are optional.  When setting limits, if a field is missing
     the current value is not changed.

     Members:
     'iops-total: int' (optional)
          limit total I/O operations per second
     'iops-total-max: int' (optional)
          I/O operations burst
     'iops-total-max-length: int' (optional)
          length of the iops-total-max burst period, in seconds It must
          only be set if 'iops-total-max' is set as well.
     'iops-read: int' (optional)
          limit read operations per second
     'iops-read-max: int' (optional)
          I/O operations read burst
     'iops-read-max-length: int' (optional)
          length of the iops-read-max burst period, in seconds It must
          only be set if 'iops-read-max' is set as well.
     'iops-write: int' (optional)
          limit write operations per second
     'iops-write-max: int' (optional)
          I/O operations write burst
     'iops-write-max-length: int' (optional)
          length of the iops-write-max burst period, in seconds It must
          only be set if 'iops-write-max' is set as well.
     'bps-total: int' (optional)
          limit total bytes per second
     'bps-total-max: int' (optional)
          total bytes burst
     'bps-total-max-length: int' (optional)
          length of the bps-total-max burst period, in seconds.  It must
          only be set if 'bps-total-max' is set as well.
     'bps-read: int' (optional)
          limit read bytes per second
     'bps-read-max: int' (optional)
          total bytes read burst
     'bps-read-max-length: int' (optional)
          length of the bps-read-max burst period, in seconds It must
          only be set if 'bps-read-max' is set as well.
     'bps-write: int' (optional)
          limit write bytes per second
     'bps-write-max: int' (optional)
          total bytes write burst
     'bps-write-max-length: int' (optional)
          length of the bps-write-max burst period, in seconds It must
          only be set if 'bps-write-max' is set as well.
     'iops-size: int' (optional)
          when limiting by iops max size of an I/O in bytes

     Since: 2.11

 -- Command: block-stream

     Copy data from a backing file into a block device.

     The block streaming operation is performed in the background until
     the entire backing file has been copied.  This command returns
     immediately once streaming has started.  The status of ongoing
     block streaming operations can be checked with query-block-jobs.
     The operation can be stopped before it has completed using the
     block-job-cancel command.

     The node that receives the data is called the top image, can be
     located in any part of the chain (but always above the base image;
     see below) and can be specified using its device or node name.
     Earlier qemu versions only allowed 'device' to name the top level
     node; presence of the 'base-node' parameter during introspection
     can be used as a witness of the enhanced semantics of 'device'.

     If a base file is specified then sectors are not copied from that
     base file and its backing chain.  When streaming completes the
     image file will have the base file as its backing file.  This can
     be used to stream a subset of the backing file chain instead of
     flattening the entire image.

     On successful completion the image file is updated to drop the
     backing file and the BLOCK_JOB_COMPLETED event is emitted.

     Arguments:
     'job-id: string' (optional)
          identifier for the newly-created block job.  If omitted, the
          device name will be used.  (Since 2.7)
     'device: string'
          the device or node name of the top image
     'base: string' (optional)
          the common backing file name.  It cannot be set if 'base-node'
          is also set.
     'base-node: string' (optional)
          the node name of the backing file.  It cannot be set if 'base'
          is also set.  (Since 2.8)
     'backing-file: string' (optional)
          The backing file string to write into the top image.  This
          filename is not validated.

          If a pathname string is such that it cannot be resolved by
          QEMU, that means that subsequent QMP or HMP commands must use
          node-names for the image in question, as filename lookup
          methods will fail.

          If not specified, QEMU will automatically determine the
          backing file string to use, or error out if there is no
          obvious choice.  Care should be taken when specifying the
          string, to specify a valid filename or protocol.  (Since 2.1)
     'speed: int' (optional)
          the maximum speed, in bytes per second
     'on-error: BlockdevOnError' (optional)
          the action to take on an error (default report).  'stop' and
          'enospc' can only be used if the block device supports
          io-status (see BlockInfo).  Since 1.3.
     'auto-finalize: boolean' (optional)
          When false, this job will wait in a PENDING state after it has
          finished its work, waiting for 'block-job-finalize' before
          making any block graph changes.  When true, this job will
          automatically perform its abort or commit actions.  Defaults
          to true.  (Since 3.1)
     'auto-dismiss: boolean' (optional)
          When false, this job will wait in a CONCLUDED state after it
          has completely ceased all work, and awaits
          'block-job-dismiss'.  When true, this job will automatically
          disappear from the query list without user intervention.
          Defaults to true.  (Since 3.1)

     Returns: Nothing on success.  If 'device' does not exist,
     DeviceNotFound.

     Since: 1.1

     Example:
          -> { "execute": "block-stream",
               "arguments": { "device": "virtio0",
                              "base": "/tmp/master.qcow2" } }
          <- { "return": {} }

 -- Command: block-job-set-speed

     Set maximum speed for a background block operation.

     This command can only be issued when there is an active block job.

     Throttling can be disabled by setting the speed to 0.

     Arguments:
     'device: string'
          The job identifier.  This used to be a device name (hence the
          name of the parameter), but since QEMU 2.7 it can have other
          values.
     'speed: int'
          the maximum speed, in bytes per second, or 0 for unlimited.
          Defaults to 0.

     Returns: Nothing on success If no background operation is active on
     this device, DeviceNotActive

     Since: 1.1

 -- Command: block-job-cancel

     Stop an active background block operation.

     This command returns immediately after marking the active
     background block operation for cancellation.  It is an error to
     call this command if no operation is in progress.

     The operation will cancel as soon as possible and then emit the
     BLOCK_JOB_CANCELLED event.  Before that happens the job is still
     visible when enumerated using query-block-jobs.

     Note that if you issue 'block-job-cancel' after 'drive-mirror' has
     indicated (via the event BLOCK_JOB_READY) that the source and
     destination are synchronized, then the event triggered by this
     command changes to BLOCK_JOB_COMPLETED, to indicate that the
     mirroring has ended and the destination now has a point-in-time
     copy tied to the time of the cancellation.

     For streaming, the image file retains its backing file unless the
     streaming operation happens to complete just as it is being
     cancelled.  A new streaming operation can be started at a later
     time to finish copying all data from the backing file.

     Arguments:
     'device: string'
          The job identifier.  This used to be a device name (hence the
          name of the parameter), but since QEMU 2.7 it can have other
          values.
     'force: boolean' (optional)
          If true, and the job has already emitted the event
          BLOCK_JOB_READY, abandon the job immediately (even if it is
          paused) instead of waiting for the destination to complete its
          final synchronization (since 1.3)

     Returns: Nothing on success If no background operation is active on
     this device, DeviceNotActive

     Since: 1.1

 -- Command: block-job-pause

     Pause an active background block operation.

     This command returns immediately after marking the active
     background block operation for pausing.  It is an error to call
     this command if no operation is in progress or if the job is
     already paused.

     The operation will pause as soon as possible.  No event is emitted
     when the operation is actually paused.  Cancelling a paused job
     automatically resumes it.

     Arguments:
     'device: string'
          The job identifier.  This used to be a device name (hence the
          name of the parameter), but since QEMU 2.7 it can have other
          values.

     Returns: Nothing on success If no background operation is active on
     this device, DeviceNotActive

     Since: 1.3

 -- Command: block-job-resume

     Resume an active background block operation.

     This command returns immediately after resuming a paused background
     block operation.  It is an error to call this command if no
     operation is in progress or if the job is not paused.

     This command also clears the error status of the job.

     Arguments:
     'device: string'
          The job identifier.  This used to be a device name (hence the
          name of the parameter), but since QEMU 2.7 it can have other
          values.

     Returns: Nothing on success If no background operation is active on
     this device, DeviceNotActive

     Since: 1.3

 -- Command: block-job-complete

     Manually trigger completion of an active background block
     operation.  This is supported for drive mirroring, where it also
     switches the device to write to the target path only.  The ability
     to complete is signaled with a BLOCK_JOB_READY event.

     This command completes an active background block operation
     synchronously.  The ordering of this command's return with the
     BLOCK_JOB_COMPLETED event is not defined.  Note that if an I/O
     error occurs during the processing of this command: 1) the command
     itself will fail; 2) the error will be processed according to the
     rerror/werror arguments that were specified when starting the
     operation.

     A cancelled or paused job cannot be completed.

     Arguments:
     'device: string'
          The job identifier.  This used to be a device name (hence the
          name of the parameter), but since QEMU 2.7 it can have other
          values.

     Returns: Nothing on success If no background operation is active on
     this device, DeviceNotActive

     Since: 1.3

 -- Command: block-job-dismiss

     For jobs that have already concluded, remove them from the
     block-job-query list.  This command only needs to be run for jobs
     which were started with QEMU 2.12+ job lifetime management
     semantics.

     This command will refuse to operate on any job that has not yet
     reached its terminal state, JOB_STATUS_CONCLUDED. For jobs that
     make use of the BLOCK_JOB_READY event, block-job-cancel or
     block-job-complete will still need to be used as appropriate.

     Arguments:
     'id: string'
          The job identifier.

     Returns: Nothing on success

     Since: 2.12

 -- Command: block-job-finalize

     Once a job that has manual=true reaches the pending state, it can
     be instructed to finalize any graph changes and do any necessary
     cleanup via this command.  For jobs in a transaction, instructing
     one job to finalize will force ALL jobs in the transaction to
     finalize, so it is only necessary to instruct a single member job
     to finalize.

     Arguments:
     'id: string'
          The job identifier.

     Returns: Nothing on success

     Since: 2.12

 -- Enum: BlockdevDiscardOptions

     Determines how to handle discard requests.

     Values:
     'ignore'
          Ignore the request
     'unmap'
          Forward as an unmap request

     Since: 2.9

 -- Enum: BlockdevDetectZeroesOptions

     Describes the operation mode for the automatic conversion of plain
     zero writes by the OS to driver specific optimized zero write
     commands.

     Values:
     'off'
          Disabled (default)
     'on'
          Enabled
     'unmap'
          Enabled and even try to unmap blocks if possible.  This
          requires also that 'BlockdevDiscardOptions' is set to unmap
          for this device.

     Since: 2.1

 -- Enum: BlockdevAioOptions

     Selects the AIO backend to handle I/O requests

     Values:
     'threads'
          Use qemu's thread pool
     'native'
          Use native AIO backend (only Linux and Windows)

     Since: 2.9

 -- Object: BlockdevCacheOptions

     Includes cache-related options for block devices

     Members:
     'direct: boolean' (optional)
          enables use of O_DIRECT (bypass the host page cache; default:
          false)
     'no-flush: boolean' (optional)
          ignore any flush requests for the device (default: false)

     Since: 2.9

 -- Enum: BlockdevDriver

     Drivers that are supported in block device operations.

     Values:
     'vxhs'
          Since 2.10
     'throttle'
          Since 2.11
     'nvme'
          Since 2.12
     'copy-on-read'
          Since 3.0
     'blklogwrites'
          Since 3.0
     'blkreplay'
          Since 4.2
     'blkdebug'
          Not documented
     'blkverify'
          Not documented
     'bochs'
          Not documented
     'cloop'
          Not documented
     'dmg'
          Not documented
     'file'
          Not documented
     'ftp'
          Not documented
     'ftps'
          Not documented
     'gluster'
          Not documented
     'host_cdrom'
          Not documented
     'host_device'
          Not documented
     'http'
          Not documented
     'https'
          Not documented
     'iscsi'
          Not documented
     'luks'
          Not documented
     'nbd'
          Not documented
     'nfs'
          Not documented
     'null-aio'
          Not documented
     'null-co'
          Not documented
     'parallels'
          Not documented
     'qcow'
          Not documented
     'qcow2'
          Not documented
     'qed'
          Not documented
     'quorum'
          Not documented
     'raw'
          Not documented
     'rbd'
          Not documented
     'replication'
          Not documented
          If: 'defined(CONFIG_REPLICATION)'
     'sheepdog'
          Not documented
     'ssh'
          Not documented
     'vdi'
          Not documented
     'vhdx'
          Not documented
     'vmdk'
          Not documented
     'vpc'
          Not documented
     'vvfat'
          Not documented

     Since: 2.9

 -- Object: BlockdevOptionsFile

     Driver specific block device options for the file backend.

     Members:
     'filename: string'
          path to the image file
     'pr-manager: string' (optional)
          the id for the object that will handle persistent reservations
          for this device (default: none, forward the commands via
          SG_IO; since 2.11)
     'aio: BlockdevAioOptions' (optional)
          AIO backend (default: threads) (since: 2.8)
     'locking: OnOffAuto' (optional)
          whether to enable file locking.  If set to 'auto', only enable
          when Open File Descriptor (OFD) locking API is available
          (default: auto, since 2.10)
     'drop-cache: boolean' (optional)
          invalidate page cache during live migration.  This prevents
          stale data on the migration destination with cache.direct=off.
          Currently only supported on Linux hosts.  (default: on, since:
          4.0)
          If: 'defined(CONFIG_LINUX)'
     'x-check-cache-dropped: boolean' (optional)
          whether to check that page cache was dropped on live
          migration.  May cause noticeable delays if the image file is
          large, do not use in production.  (default: off) (since: 3.0)

     Features:
     'dynamic-auto-read-only'
          If present, enabled auto-read-only means that the driver will
          open the image read-only at first, dynamically reopen the
          image file read-write when the first writer is attached to the
          node and reopen read-only when the last writer is detached.
          This allows giving QEMU write permissions only on demand when
          an operation actually needs write access.

     Since: 2.9

 -- Object: BlockdevOptionsNull

     Driver specific block device options for the null backend.

     Members:
     'size: int' (optional)
          size of the device in bytes.
     'latency-ns: int' (optional)
          emulated latency (in nanoseconds) in processing requests.
          Default to zero which completes requests immediately.  (Since
          2.4)
     'read-zeroes: boolean' (optional)
          if true, reads from the device produce zeroes; if false, the
          buffer is left unchanged.  (default: false; since: 4.1)

     Since: 2.9

 -- Object: BlockdevOptionsNVMe

     Driver specific block device options for the NVMe backend.

     Members:
     'device: string'
          controller address of the NVMe device.
     'namespace: int'
          namespace number of the device, starting from 1.

     Since: 2.12

 -- Object: BlockdevOptionsVVFAT

     Driver specific block device options for the vvfat protocol.

     Members:
     'dir: string'
          directory to be exported as FAT image
     'fat-type: int' (optional)
          FAT type: 12, 16 or 32
     'floppy: boolean' (optional)
          whether to export a floppy image (true) or partitioned hard
          disk (false; default)
     'label: string' (optional)
          set the volume label, limited to 11 bytes.  FAT16 and FAT32
          traditionally have some restrictions on labels, which are
          ignored by most operating systems.  Defaults to "QEMU VVFAT".
          (since 2.4)
     'rw: boolean' (optional)
          whether to allow write operations (default: false)

     Since: 2.9

 -- Object: BlockdevOptionsGenericFormat

     Driver specific block device options for image format that have no
     option besides their data source.

     Members:
     'file: BlockdevRef'
          reference to or definition of the data source block device

     Since: 2.9

 -- Object: BlockdevOptionsLUKS

     Driver specific block device options for LUKS.

     Members:
     'key-secret: string' (optional)
          the ID of a QCryptoSecret object providing the decryption key
          (since 2.6).  Mandatory except when doing a metadata-only
          probe of the image.
     The members of 'BlockdevOptionsGenericFormat'

     Since: 2.9

 -- Object: BlockdevOptionsGenericCOWFormat

     Driver specific block device options for image format that have no
     option besides their data source and an optional backing file.

     Members:
     'backing: BlockdevRefOrNull' (optional)
          reference to or definition of the backing file block device,
          null disables the backing file entirely.  Defaults to the
          backing file stored the image file.
     The members of 'BlockdevOptionsGenericFormat'

     Since: 2.9

 -- Enum: Qcow2OverlapCheckMode

     General overlap check modes.

     Values:
     'none'
          Do not perform any checks
     'constant'
          Perform only checks which can be done in constant time and
          without reading anything from disk
     'cached'
          Perform only checks which can be done without reading anything
          from disk
     'all'
          Perform all available overlap checks

     Since: 2.9

 -- Object: Qcow2OverlapCheckFlags

     Structure of flags for each metadata structure.  Setting a field to
     'true' makes qemu guard that structure against unintended
     overwriting.  The default value is chosen according to the template
     given.

     Members:
     'template: Qcow2OverlapCheckMode' (optional)
          Specifies a template mode which can be adjusted using the
          other flags, defaults to 'cached'
     'bitmap-directory: boolean' (optional)
          since 3.0
     'main-header: boolean' (optional)
          Not documented
     'active-l1: boolean' (optional)
          Not documented
     'active-l2: boolean' (optional)
          Not documented
     'refcount-table: boolean' (optional)
          Not documented
     'refcount-block: boolean' (optional)
          Not documented
     'snapshot-table: boolean' (optional)
          Not documented
     'inactive-l1: boolean' (optional)
          Not documented
     'inactive-l2: boolean' (optional)
          Not documented

     Since: 2.9

 -- Alternate: Qcow2OverlapChecks

     Specifies which metadata structures should be guarded against
     unintended overwriting.

     Members:
     'flags: Qcow2OverlapCheckFlags'
          set of flags for separate specification of each metadata
          structure type
     'mode: Qcow2OverlapCheckMode'
          named mode which chooses a specific set of flags

     Since: 2.9

 -- Enum: BlockdevQcowEncryptionFormat

     Values:
     'aes'
          AES-CBC with plain64 initialization vectors

     Since: 2.10

 -- Object: BlockdevQcowEncryption

     Members:
     'format: BlockdevQcowEncryptionFormat'
          Not documented
     The members of 'QCryptoBlockOptionsQCow' when 'format' is "aes"

     Since: 2.10

 -- Object: BlockdevOptionsQcow

     Driver specific block device options for qcow.

     Members:
     'encrypt: BlockdevQcowEncryption' (optional)
          Image decryption options.  Mandatory for encrypted images,
          except when doing a metadata-only probe of the image.
     The members of 'BlockdevOptionsGenericCOWFormat'

     Since: 2.10

 -- Enum: BlockdevQcow2EncryptionFormat

     Values:
     'aes'
          AES-CBC with plain64 initialization vectors
     'luks'
          Not documented

     Since: 2.10

 -- Object: BlockdevQcow2Encryption

     Members:
     'format: BlockdevQcow2EncryptionFormat'
          Not documented
     The members of 'QCryptoBlockOptionsQCow' when 'format' is "aes"
     The members of 'QCryptoBlockOptionsLUKS' when 'format' is "luks"

     Since: 2.10

 -- Object: BlockdevOptionsQcow2

     Driver specific block device options for qcow2.

     Members:
     'lazy-refcounts: boolean' (optional)
          whether to enable the lazy refcounts feature (default is taken
          from the image file)
     'pass-discard-request: boolean' (optional)
          whether discard requests to the qcow2 device should be
          forwarded to the data source
     'pass-discard-snapshot: boolean' (optional)
          whether discard requests for the data source should be issued
          when a snapshot operation (e.g.  deleting a snapshot) frees
          clusters in the qcow2 file
     'pass-discard-other: boolean' (optional)
          whether discard requests for the data source should be issued
          on other occasions where a cluster gets freed
     'overlap-check: Qcow2OverlapChecks' (optional)
          which overlap checks to perform for writes to the image,
          defaults to 'cached' (since 2.2)
     'cache-size: int' (optional)
          the maximum total size of the L2 table and refcount block
          caches in bytes (since 2.2)
     'l2-cache-size: int' (optional)
          the maximum size of the L2 table cache in bytes (since 2.2)
     'l2-cache-entry-size: int' (optional)
          the size of each entry in the L2 cache in bytes.  It must be a
          power of two between 512 and the cluster size.  The default
          value is the cluster size (since 2.12)
     'refcount-cache-size: int' (optional)
          the maximum size of the refcount block cache in bytes (since
          2.2)
     'cache-clean-interval: int' (optional)
          clean unused entries in the L2 and refcount caches.  The
          interval is in seconds.  The default value is 600 on
          supporting platforms, and 0 on other platforms.  0 disables
          this feature.  (since 2.5)
     'encrypt: BlockdevQcow2Encryption' (optional)
          Image decryption options.  Mandatory for encrypted images,
          except when doing a metadata-only probe of the image.  (since
          2.10)
     'data-file: BlockdevRef' (optional)
          reference to or definition of the external data file.  This
          may only be specified for images that require an external data
          file.  If it is not specified for such an image, the data file
          name is loaded from the image file.  (since 4.0)
     The members of 'BlockdevOptionsGenericCOWFormat'

     Since: 2.9

 -- Enum: SshHostKeyCheckMode

     'none' Don't check the host key at all 'hash' Compare the host key
     with a given hash 'known_hosts' Check the host key against the
     known_hosts file

     Values:
     'none'
          Not documented
     'hash'
          Not documented
     'known_hosts'
          Not documented

     Since: 2.12

 -- Enum: SshHostKeyCheckHashType

     'md5' The given hash is an md5 hash 'sha1' The given hash is an
     sha1 hash

     Values:
     'md5'
          Not documented
     'sha1'
          Not documented

     Since: 2.12

 -- Object: SshHostKeyHash

     'type' The hash algorithm used for the hash 'hash' The expected
     hash value

     Members:
     'type: SshHostKeyCheckHashType'
          Not documented
     'hash: string'
          Not documented

     Since: 2.12

 -- Object: SshHostKeyCheck

     Members:
     'mode: SshHostKeyCheckMode'
          Not documented
     The members of 'SshHostKeyHash' when 'mode' is "hash"

     Since: 2.12

 -- Object: BlockdevOptionsSsh

     Members:
     'server: InetSocketAddress'
          host address
     'path: string'
          path to the image on the host
     'user: string' (optional)
          user as which to connect, defaults to current local user name
     'host-key-check: SshHostKeyCheck' (optional)
          Defines how and what to check the host key against (default:
          known_hosts)

     Since: 2.9

 -- Enum: BlkdebugEvent

     Trigger events supported by blkdebug.

     Values:
     'l1_shrink_write_table'
          write zeros to the l1 table to shrink image.  (since 2.11)
     'l1_shrink_free_l2_clusters'
          discard the l2 tables.  (since 2.11)
     'cor_write'
          a write due to copy-on-read (since 2.11)
     'cluster_alloc_space'
          an allocation of file space for a cluster (since 4.1)
     'none'
          triggers once at creation of the blkdebug node (since 4.1)
     'l1_update'
          Not documented
     'l1_grow_alloc_table'
          Not documented
     'l1_grow_write_table'
          Not documented
     'l1_grow_activate_table'
          Not documented
     'l2_load'
          Not documented
     'l2_update'
          Not documented
     'l2_update_compressed'
          Not documented
     'l2_alloc_cow_read'
          Not documented
     'l2_alloc_write'
          Not documented
     'read_aio'
          Not documented
     'read_backing_aio'
          Not documented
     'read_compressed'
          Not documented
     'write_aio'
          Not documented
     'write_compressed'
          Not documented
     'vmstate_load'
          Not documented
     'vmstate_save'
          Not documented
     'cow_read'
          Not documented
     'cow_write'
          Not documented
     'reftable_load'
          Not documented
     'reftable_grow'
          Not documented
     'reftable_update'
          Not documented
     'refblock_load'
          Not documented
     'refblock_update'
          Not documented
     'refblock_update_part'
          Not documented
     'refblock_alloc'
          Not documented
     'refblock_alloc_hookup'
          Not documented
     'refblock_alloc_write'
          Not documented
     'refblock_alloc_write_blocks'
          Not documented
     'refblock_alloc_write_table'
          Not documented
     'refblock_alloc_switch_table'
          Not documented
     'cluster_alloc'
          Not documented
     'cluster_alloc_bytes'
          Not documented
     'cluster_free'
          Not documented
     'flush_to_os'
          Not documented
     'flush_to_disk'
          Not documented
     'pwritev_rmw_head'
          Not documented
     'pwritev_rmw_after_head'
          Not documented
     'pwritev_rmw_tail'
          Not documented
     'pwritev_rmw_after_tail'
          Not documented
     'pwritev'
          Not documented
     'pwritev_zero'
          Not documented
     'pwritev_done'
          Not documented
     'empty_image_prepare'
          Not documented

     Since: 2.9

 -- Enum: BlkdebugIOType

     Kinds of I/O that blkdebug can inject errors in.

     Values:
     'read'
          .bdrv_co_preadv()
     'write'
          .bdrv_co_pwritev()
     'write-zeroes'
          .bdrv_co_pwrite_zeroes()
     'discard'
          .bdrv_co_pdiscard()
     'flush'
          .bdrv_co_flush_to_disk()
     'block-status'
          .bdrv_co_block_status()

     Since: 4.1

 -- Object: BlkdebugInjectErrorOptions

     Describes a single error injection for blkdebug.

     Members:
     'event: BlkdebugEvent'
          trigger event
     'state: int' (optional)
          the state identifier blkdebug needs to be in to actually
          trigger the event; defaults to "any"
     'iotype: BlkdebugIOType' (optional)
          the type of I/O operations on which this error should be
          injected; defaults to "all read, write, write-zeroes, discard,
          and flush operations" (since: 4.1)
     'errno: int' (optional)
          error identifier (errno) to be returned; defaults to EIO
     'sector: int' (optional)
          specifies the sector index which has to be affected in order
          to actually trigger the event; defaults to "any sector"
     'once: boolean' (optional)
          disables further events after this one has been triggered;
          defaults to false
     'immediately: boolean' (optional)
          fail immediately; defaults to false

     Since: 2.9

 -- Object: BlkdebugSetStateOptions

     Describes a single state-change event for blkdebug.

     Members:
     'event: BlkdebugEvent'
          trigger event
     'state: int' (optional)
          the current state identifier blkdebug needs to be in; defaults
          to "any"
     'new_state: int'
          the state identifier blkdebug is supposed to assume if this
          event is triggered

     Since: 2.9

 -- Object: BlockdevOptionsBlkdebug

     Driver specific block device options for blkdebug.

     Members:
     'image: BlockdevRef'
          underlying raw block device (or image file)
     'config: string' (optional)
          filename of the configuration file
     'align: int' (optional)
          required alignment for requests in bytes, must be positive
          power of 2, or 0 for default
     'max-transfer: int' (optional)
          maximum size for I/O transfers in bytes, must be positive
          multiple of 'align' and of the underlying file's request
          alignment (but need not be a power of 2), or 0 for default
          (since 2.10)
     'opt-write-zero: int' (optional)
          preferred alignment for write zero requests in bytes, must be
          positive multiple of 'align' and of the underlying file's
          request alignment (but need not be a power of 2), or 0 for
          default (since 2.10)
     'max-write-zero: int' (optional)
          maximum size for write zero requests in bytes, must be
          positive multiple of 'align', of 'opt-write-zero', and of the
          underlying file's request alignment (but need not be a power
          of 2), or 0 for default (since 2.10)
     'opt-discard: int' (optional)
          preferred alignment for discard requests in bytes, must be
          positive multiple of 'align' and of the underlying file's
          request alignment (but need not be a power of 2), or 0 for
          default (since 2.10)
     'max-discard: int' (optional)
          maximum size for discard requests in bytes, must be positive
          multiple of 'align', of 'opt-discard', and of the underlying
          file's request alignment (but need not be a power of 2), or 0
          for default (since 2.10)
     'inject-error: array of BlkdebugInjectErrorOptions' (optional)
          array of error injection descriptions
     'set-state: array of BlkdebugSetStateOptions' (optional)
          array of state-change descriptions

     Since: 2.9

 -- Object: BlockdevOptionsBlklogwrites

     Driver specific block device options for blklogwrites.

     Members:
     'file: BlockdevRef'
          block device
     'log: BlockdevRef'
          block device used to log writes to 'file'
     'log-sector-size: int' (optional)
          sector size used in logging writes to 'file', determines
          granularity of offsets and sizes of writes (default: 512)
     'log-append: boolean' (optional)
          append to an existing log (default: false)
     'log-super-update-interval: int' (optional)
          interval of write requests after which the log super block is
          updated to disk (default: 4096)

     Since: 3.0

 -- Object: BlockdevOptionsBlkverify

     Driver specific block device options for blkverify.

     Members:
     'test: BlockdevRef'
          block device to be tested
     'raw: BlockdevRef'
          raw image used for verification

     Since: 2.9

 -- Object: BlockdevOptionsBlkreplay

     Driver specific block device options for blkreplay.

     Members:
     'image: BlockdevRef'
          disk image which should be controlled with blkreplay

     Since: 4.2

 -- Enum: QuorumReadPattern

     An enumeration of quorum read patterns.

     Values:
     'quorum'
          read all the children and do a quorum vote on reads
     'fifo'
          read only from the first child that has not failed

     Since: 2.9

 -- Object: BlockdevOptionsQuorum

     Driver specific block device options for Quorum

     Members:
     'blkverify: boolean' (optional)
          true if the driver must print content mismatch set to false by
          default
     'children: array of BlockdevRef'
          the children block devices to use
     'vote-threshold: int'
          the vote limit under which a read will fail
     'rewrite-corrupted: boolean' (optional)
          rewrite corrupted data when quorum is reached (Since 2.1)
     'read-pattern: QuorumReadPattern' (optional)
          choose read pattern and set to quorum by default (Since 2.2)

     Since: 2.9

 -- Object: BlockdevOptionsGluster

     Driver specific block device options for Gluster

     Members:
     'volume: string'
          name of gluster volume where VM image resides
     'path: string'
          absolute path to image file in gluster volume
     'server: array of SocketAddress'
          gluster servers description
     'debug: int' (optional)
          libgfapi log level (default '4' which is Error) (Since 2.8)
     'logfile: string' (optional)
          libgfapi log file (default /dev/stderr) (Since 2.8)

     Since: 2.9

 -- Enum: IscsiTransport

     An enumeration of libiscsi transport types

     Values:
     'tcp'
          Not documented
     'iser'
          Not documented

     Since: 2.9

 -- Enum: IscsiHeaderDigest

     An enumeration of header digests supported by libiscsi

     Values:
     'crc32c'
          Not documented
     'none'
          Not documented
     'crc32c-none'
          Not documented
     'none-crc32c'
          Not documented

     Since: 2.9

 -- Object: BlockdevOptionsIscsi

     Members:
     'transport: IscsiTransport'
          The iscsi transport type
     'portal: string'
          The address of the iscsi portal
     'target: string'
          The target iqn name
     'lun: int' (optional)
          LUN to connect to.  Defaults to 0.
     'user: string' (optional)
          User name to log in with.  If omitted, no CHAP authentication
          is performed.
     'password-secret: string' (optional)
          The ID of a QCryptoSecret object providing the password for
          the login.  This option is required if 'user' is specified.
     'initiator-name: string' (optional)
          The iqn name we want to identify to the target as.  If this
          option is not specified, an initiator name is generated
          automatically.
     'header-digest: IscsiHeaderDigest' (optional)
          The desired header digest.  Defaults to none-crc32c.
     'timeout: int' (optional)
          Timeout in seconds after which a request will timeout.  0
          means no timeout and is the default.
     Driver specific block device options for iscsi

     Since: 2.9

 -- Enum: RbdAuthMode

     Values:
     'cephx'
          Not documented
     'none'
          Not documented

     Since: 3.0

 -- Object: BlockdevOptionsRbd

     Members:
     'pool: string'
          Ceph pool name.
     'image: string'
          Image name in the Ceph pool.
     'conf: string' (optional)
          path to Ceph configuration file.  Values in the configuration
          file will be overridden by options specified via QAPI.
     'snapshot: string' (optional)
          Ceph snapshot name.
     'user: string' (optional)
          Ceph id name.
     'auth-client-required: array of RbdAuthMode' (optional)
          Acceptable authentication modes.  This maps to Ceph
          configuration option "auth_client_required".  (Since 3.0)
     'key-secret: string' (optional)
          ID of a QCryptoSecret object providing a key for cephx
          authentication.  This maps to Ceph configuration option "key".
          (Since 3.0)
     'server: array of InetSocketAddressBase' (optional)
          Monitor host address and port.  This maps to the "mon_host"
          Ceph option.

     Since: 2.9

 -- Object: BlockdevOptionsSheepdog

     Driver specific block device options for sheepdog

     Members:
     'vdi: string'
          Virtual disk image name
     'server: SocketAddress'
          The Sheepdog server to connect to
     'snap-id: int' (optional)
          Snapshot ID
     'tag: string' (optional)
          Snapshot tag name
     Only one of 'snap-id' and 'tag' may be present.

     Since: 2.9

 -- Enum: ReplicationMode

     An enumeration of replication modes.

     Values:
     'primary'
          Primary mode, the vm's state will be sent to secondary QEMU.
     'secondary'
          Secondary mode, receive the vm's state from primary QEMU.

     Since: 2.9

     If: 'defined(CONFIG_REPLICATION)'

 -- Object: BlockdevOptionsReplication

     Driver specific block device options for replication

     Members:
     'mode: ReplicationMode'
          the replication mode
     'top-id: string' (optional)
          In secondary mode, node name or device ID of the root node who
          owns the replication node chain.  Must not be given in primary
          mode.
     The members of 'BlockdevOptionsGenericFormat'

     Since: 2.9

     If: 'defined(CONFIG_REPLICATION)'

 -- Enum: NFSTransport

     An enumeration of NFS transport types

     Values:
     'inet'
          TCP transport

     Since: 2.9

 -- Object: NFSServer

     Captures the address of the socket

     Members:
     'type: NFSTransport'
          transport type used for NFS (only TCP supported)
     'host: string'
          host address for NFS server

     Since: 2.9

 -- Object: BlockdevOptionsNfs

     Driver specific block device option for NFS

     Members:
     'server: NFSServer'
          host address
     'path: string'
          path of the image on the host
     'user: int' (optional)
          UID value to use when talking to the server (defaults to 65534
          on Windows and getuid() on unix)
     'group: int' (optional)
          GID value to use when talking to the server (defaults to 65534
          on Windows and getgid() in unix)
     'tcp-syn-count: int' (optional)
          number of SYNs during the session establishment (defaults to
          libnfs default)
     'readahead-size: int' (optional)
          set the readahead size in bytes (defaults to libnfs default)
     'page-cache-size: int' (optional)
          set the pagecache size in bytes (defaults to libnfs default)
     'debug: int' (optional)
          set the NFS debug level (max 2) (defaults to libnfs default)

     Since: 2.9

 -- Object: BlockdevOptionsCurlBase

     Driver specific block device options shared by all protocols
     supported by the curl backend.

     Members:
     'url: string'
          URL of the image file
     'readahead: int' (optional)
          Size of the read-ahead cache; must be a multiple of 512
          (defaults to 256 kB)
     'timeout: int' (optional)
          Timeout for connections, in seconds (defaults to 5)
     'username: string' (optional)
          Username for authentication (defaults to none)
     'password-secret: string' (optional)
          ID of a QCryptoSecret object providing a password for
          authentication (defaults to no password)
     'proxy-username: string' (optional)
          Username for proxy authentication (defaults to none)
     'proxy-password-secret: string' (optional)
          ID of a QCryptoSecret object providing a password for proxy
          authentication (defaults to no password)

     Since: 2.9

 -- Object: BlockdevOptionsCurlHttp

     Driver specific block device options for HTTP connections over the
     curl backend.  URLs must start with "http://".

     Members:
     'cookie: string' (optional)
          List of cookies to set; format is "name1=content1;
          name2=content2;" as explained by CURLOPT_COOKIE(3).  Defaults
          to no cookies.
     'cookie-secret: string' (optional)
          ID of a QCryptoSecret object providing the cookie data in a
          secure way.  See 'cookie' for the format.  (since 2.10)
     The members of 'BlockdevOptionsCurlBase'

     Since: 2.9

 -- Object: BlockdevOptionsCurlHttps

     Driver specific block device options for HTTPS connections over the
     curl backend.  URLs must start with "https://".

     Members:
     'cookie: string' (optional)
          List of cookies to set; format is "name1=content1;
          name2=content2;" as explained by CURLOPT_COOKIE(3).  Defaults
          to no cookies.
     'sslverify: boolean' (optional)
          Whether to verify the SSL certificate's validity (defaults to
          true)
     'cookie-secret: string' (optional)
          ID of a QCryptoSecret object providing the cookie data in a
          secure way.  See 'cookie' for the format.  (since 2.10)
     The members of 'BlockdevOptionsCurlBase'

     Since: 2.9

 -- Object: BlockdevOptionsCurlFtp

     Driver specific block device options for FTP connections over the
     curl backend.  URLs must start with "ftp://".

     Members:
     The members of 'BlockdevOptionsCurlBase'

     Since: 2.9

 -- Object: BlockdevOptionsCurlFtps

     Driver specific block device options for FTPS connections over the
     curl backend.  URLs must start with "ftps://".

     Members:
     'sslverify: boolean' (optional)
          Whether to verify the SSL certificate's validity (defaults to
          true)
     The members of 'BlockdevOptionsCurlBase'

     Since: 2.9

 -- Object: BlockdevOptionsNbd

     Driver specific block device options for NBD.

     Members:
     'server: SocketAddress'
          NBD server address
     'export: string' (optional)
          export name
     'tls-creds: string' (optional)
          TLS credentials ID
     'x-dirty-bitmap: string' (optional)
          A "qemu:dirty-bitmap:NAME" string to query in place of
          traditional "base:allocation" block status (see
          NBD_OPT_LIST_META_CONTEXT in the NBD protocol) (since 3.0)
     'reconnect-delay: int' (optional)
          On an unexpected disconnect, the nbd client tries to connect
          again until succeeding or encountering a serious error.
          During the first 'reconnect-delay' seconds, all requests are
          paused and will be rerun on a successful reconnect.  After
          that time, any delayed requests and all future requests before
          a successful reconnect will immediately fail.  Default 0
          (Since 4.2)

     Since: 2.9

 -- Object: BlockdevOptionsRaw

     Driver specific block device options for the raw driver.

     Members:
     'offset: int' (optional)
          position where the block device starts
     'size: int' (optional)
          the assumed size of the device
     The members of 'BlockdevOptionsGenericFormat'

     Since: 2.9

 -- Object: BlockdevOptionsVxHS

     Driver specific block device options for VxHS

     Members:
     'vdisk-id: string'
          UUID of VxHS volume
     'server: InetSocketAddressBase'
          vxhs server IP, port
     'tls-creds: string' (optional)
          TLS credentials ID

     Since: 2.10

 -- Object: BlockdevOptionsThrottle

     Driver specific block device options for the throttle driver

     Members:
     'throttle-group: string'
          the name of the throttle-group object to use.  It must already
          exist.
     'file: BlockdevRef'
          reference to or definition of the data source block device

     Since: 2.11

 -- Object: BlockdevOptions

     Options for creating a block device.  Many options are available
     for all block devices, independent of the block driver:

     Members:
     'driver: BlockdevDriver'
          block driver name
     'node-name: string' (optional)
          the node name of the new node (Since 2.0).  This option is
          required on the top level of blockdev-add.  Valid node names
          start with an alphabetic character and may contain only
          alphanumeric characters, '-', '.'  and '_'.  Their maximum
          length is 31 characters.
     'discard: BlockdevDiscardOptions' (optional)
          discard-related options (default: ignore)
     'cache: BlockdevCacheOptions' (optional)
          cache-related options
     'read-only: boolean' (optional)
          whether the block device should be read-only (default: false).
          Note that some block drivers support only read-only access,
          either generally or in certain configurations.  In this case,
          the default value does not work and the option must be
          specified explicitly.
     'auto-read-only: boolean' (optional)
          if true and 'read-only' is false, QEMU may automatically
          decide not to open the image read-write as requested, but fall
          back to read-only instead (and switch between the modes
          later), e.g.  depending on whether the image file is writable
          or whether a writing user is attached to the node (default:
          false, since 3.1)
     'detect-zeroes: BlockdevDetectZeroesOptions' (optional)
          detect and optimize zero writes (Since 2.1) (default: off)
     'force-share: boolean' (optional)
          force share all permission on added nodes.  Requires
          read-only=true.  (Since 2.10)
     The members of 'BlockdevOptionsBlkdebug' when 'driver' is "blkdebug"
     The members of 'BlockdevOptionsBlklogwrites' when 'driver' is "blklogwrites"
     The members of 'BlockdevOptionsBlkverify' when 'driver' is "blkverify"
     The members of 'BlockdevOptionsBlkreplay' when 'driver' is "blkreplay"
     The members of 'BlockdevOptionsGenericFormat' when 'driver' is "bochs"
     The members of 'BlockdevOptionsGenericFormat' when 'driver' is "cloop"
     The members of 'BlockdevOptionsGenericFormat' when 'driver' is "copy-on-read"
     The members of 'BlockdevOptionsGenericFormat' when 'driver' is "dmg"
     The members of 'BlockdevOptionsFile' when 'driver' is "file"
     The members of 'BlockdevOptionsCurlFtp' when 'driver' is "ftp"
     The members of 'BlockdevOptionsCurlFtps' when 'driver' is "ftps"
     The members of 'BlockdevOptionsGluster' when 'driver' is "gluster"
     The members of 'BlockdevOptionsFile' when 'driver' is "host_cdrom"
     The members of 'BlockdevOptionsFile' when 'driver' is "host_device"
     The members of 'BlockdevOptionsCurlHttp' when 'driver' is "http"
     The members of 'BlockdevOptionsCurlHttps' when 'driver' is "https"
     The members of 'BlockdevOptionsIscsi' when 'driver' is "iscsi"
     The members of 'BlockdevOptionsLUKS' when 'driver' is "luks"
     The members of 'BlockdevOptionsNbd' when 'driver' is "nbd"
     The members of 'BlockdevOptionsNfs' when 'driver' is "nfs"
     The members of 'BlockdevOptionsNull' when 'driver' is "null-aio"
     The members of 'BlockdevOptionsNull' when 'driver' is "null-co"
     The members of 'BlockdevOptionsNVMe' when 'driver' is "nvme"
     The members of 'BlockdevOptionsGenericFormat' when 'driver' is "parallels"
     The members of 'BlockdevOptionsQcow2' when 'driver' is "qcow2"
     The members of 'BlockdevOptionsQcow' when 'driver' is "qcow"
     The members of 'BlockdevOptionsGenericCOWFormat' when 'driver' is "qed"
     The members of 'BlockdevOptionsQuorum' when 'driver' is "quorum"
     The members of 'BlockdevOptionsRaw' when 'driver' is "raw"
     The members of 'BlockdevOptionsRbd' when 'driver' is "rbd"
     The members of 'BlockdevOptionsReplication' when 'driver' is "replication" (If: 'defined(CONFIG_REPLICATION)')
     The members of 'BlockdevOptionsSheepdog' when 'driver' is "sheepdog"
     The members of 'BlockdevOptionsSsh' when 'driver' is "ssh"
     The members of 'BlockdevOptionsThrottle' when 'driver' is "throttle"
     The members of 'BlockdevOptionsGenericFormat' when 'driver' is "vdi"
     The members of 'BlockdevOptionsGenericFormat' when 'driver' is "vhdx"
     The members of 'BlockdevOptionsGenericCOWFormat' when 'driver' is "vmdk"
     The members of 'BlockdevOptionsGenericFormat' when 'driver' is "vpc"
     The members of 'BlockdevOptionsVVFAT' when 'driver' is "vvfat"
     The members of 'BlockdevOptionsVxHS' when 'driver' is "vxhs"
     Remaining options are determined by the block driver.

     Since: 2.9

 -- Alternate: BlockdevRef

     Reference to a block device.

     Members:
     'definition: BlockdevOptions'
          defines a new block device inline
     'reference: string'
          references the ID of an existing block device

     Since: 2.9

 -- Alternate: BlockdevRefOrNull

     Reference to a block device.

     Members:
     'definition: BlockdevOptions'
          defines a new block device inline
     'reference: string'
          references the ID of an existing block device.  An empty
          string means that no block device should be referenced.
          Deprecated; use null instead.
     'null: null'
          No block device should be referenced (since 2.10)

     Since: 2.9

 -- Command: blockdev-add

     Creates a new block device.  If the 'id' option is given at the top
     level, a BlockBackend will be created; otherwise, 'node-name' is
     mandatory at the top level and no BlockBackend will be created.

     Arguments: the members of 'BlockdevOptions'

     Since: 2.9

     Example:
          1.
          -> { "execute": "blockdev-add",
               "arguments": {
                    "driver": "qcow2",
                    "node-name": "test1",
                    "file": {
                        "driver": "file",
                        "filename": "test.qcow2"
                     }
                }
              }
          <- { "return": {} }

          2.
          -> { "execute": "blockdev-add",
               "arguments": {
                    "driver": "qcow2",
                    "node-name": "node0",
                    "discard": "unmap",
                    "cache": {
                       "direct": true
                     },
                     "file": {
                       "driver": "file",
                       "filename": "/tmp/test.qcow2"
                     },
                     "backing": {
                        "driver": "raw",
                        "file": {
                           "driver": "file",
                           "filename": "/dev/fdset/4"
                         }
                     }
                 }
               }

          <- { "return": {} }

 -- Command: x-blockdev-reopen

     Reopens a block device using the given set of options.  Any option
     not specified will be reset to its default value regardless of its
     previous status.  If an option cannot be changed or a particular
     driver does not support reopening then the command will return an
     error.

     The top-level 'node-name' option (from BlockdevOptions) must be
     specified and is used to select the block device to be reopened.
     Other 'node-name' options must be either omitted or set to the
     current name of the appropriate node.  This command won't change
     any node name and any attempt to do it will result in an error.

     In the case of options that refer to child nodes, the behavior of
     this command depends on the value:

     1) A set of options (BlockdevOptions): the child is reopened with
     the specified set of options.

     2) A reference to the current child: the child is reopened using
     its existing set of options.

     3) A reference to a different node: the current child is replaced
     with the specified one.

     4) NULL: the current child (if any) is detached.

     Options (1) and (2) are supported in all cases, but at the moment
     only 'backing' allows replacing or detaching an existing child.

     Unlike with blockdev-add, the 'backing' option must always be
     present unless the node being reopened does not have a backing file
     and its image does not have a default backing file name as part of
     its metadata.

     Arguments: the members of 'BlockdevOptions'

     Features:
     '__com.redhat_rhel-av-8_2_0-api'
          Versioning the downstream interface while it's still unstable
          upstream.  As long as this flag is present, this command will
          not change incompatibly.

     Since: 4.0

 -- Command: blockdev-del

     Deletes a block device that has been added using blockdev-add.  The
     command will fail if the node is attached to a device or is
     otherwise being used.

     Arguments:
     'node-name: string'
          Name of the graph node to delete.

     Since: 2.9

     Example:
          -> { "execute": "blockdev-add",
               "arguments": {
                    "driver": "qcow2",
                    "node-name": "node0",
                    "file": {
                        "driver": "file",
                        "filename": "test.qcow2"
                    }
               }
             }
          <- { "return": {} }

          -> { "execute": "blockdev-del",
               "arguments": { "node-name": "node0" }
             }
          <- { "return": {} }

 -- Object: BlockdevCreateOptionsFile

     Driver specific image creation options for file.

     'filename' Filename for the new image file 'size' Size of the
     virtual disk in bytes 'preallocation' Preallocation mode for the
     new image (default: off; allowed values: off, falloc (if defined
     CONFIG_POSIX_FALLOCATE), full (if defined CONFIG_POSIX)) 'nocow'
     Turn off copy-on-write (valid only on btrfs; default: off)

     Members:
     'filename: string'
          Not documented
     'size: int'
          Not documented
     'preallocation: PreallocMode' (optional)
          Not documented
     'nocow: boolean' (optional)
          Not documented

     Since: 2.12

 -- Object: BlockdevCreateOptionsGluster

     Driver specific image creation options for gluster.

     'location' Where to store the new image file 'size' Size of the
     virtual disk in bytes 'preallocation' Preallocation mode for the
     new image (default: off; allowed values: off, falloc (if defined
     CONFIG_GLUSTERFS_FALLOCATE), full (if defined
     CONFIG_GLUSTERFS_ZEROFILL))

     Members:
     'location: BlockdevOptionsGluster'
          Not documented
     'size: int'
          Not documented
     'preallocation: PreallocMode' (optional)
          Not documented

     Since: 2.12

 -- Object: BlockdevCreateOptionsLUKS

     Driver specific image creation options for LUKS.

     'file' Node to create the image format on 'size' Size of the
     virtual disk in bytes 'preallocation' Preallocation mode for the
     new image (since: 4.2) (default: off; allowed values: off,
     metadata, falloc, full)

     Members:
     'file: BlockdevRef'
          Not documented
     'size: int'
          Not documented
     'preallocation: PreallocMode' (optional)
          Not documented
     The members of 'QCryptoBlockCreateOptionsLUKS'

     Since: 2.12

 -- Object: BlockdevCreateOptionsNfs

     Driver specific image creation options for NFS.

     'location' Where to store the new image file 'size' Size of the
     virtual disk in bytes

     Members:
     'location: BlockdevOptionsNfs'
          Not documented
     'size: int'
          Not documented

     Since: 2.12

 -- Object: BlockdevCreateOptionsParallels

     Driver specific image creation options for parallels.

     'file' Node to create the image format on 'size' Size of the
     virtual disk in bytes 'cluster-size' Cluster size in bytes
     (default: 1 MB)

     Members:
     'file: BlockdevRef'
          Not documented
     'size: int'
          Not documented
     'cluster-size: int' (optional)
          Not documented

     Since: 2.12

 -- Object: BlockdevCreateOptionsQcow

     Driver specific image creation options for qcow.

     'file' Node to create the image format on 'size' Size of the
     virtual disk in bytes 'backing-file' File name of the backing file
     if a backing file should be used 'encrypt' Encryption options if
     the image should be encrypted

     Members:
     'file: BlockdevRef'
          Not documented
     'size: int'
          Not documented
     'backing-file: string' (optional)
          Not documented
     'encrypt: QCryptoBlockCreateOptions' (optional)
          Not documented

     Since: 2.12

 -- Enum: BlockdevQcow2Version

     Values:
     'v2'
          The original QCOW2 format as introduced in qemu 0.10 (version
          2)
     'v3'
          The extended QCOW2 format as introduced in qemu 1.1 (version
          3)

     Since: 2.12

 -- Object: BlockdevCreateOptionsQcow2

     Driver specific image creation options for qcow2.

     'file' Node to create the image format on 'data-file' Node to use
     as an external data file in which all guest data is stored so that
     only metadata remains in the qcow2 file (since: 4.0)
     'data-file-raw' True if the external data file must stay valid as a
     standalone (read-only) raw image without looking at qcow2 metadata
     (default: false; since: 4.0) 'size' Size of the virtual disk in
     bytes 'version' Compatibility level (default: v3) 'backing-file'
     File name of the backing file if a backing file should be used
     'backing-fmt' Name of the block driver to use for the backing file
     'encrypt' Encryption options if the image should be encrypted
     'cluster-size' qcow2 cluster size in bytes (default: 65536)
     'preallocation' Preallocation mode for the new image (default: off;
     allowed values: off, falloc, full, metadata) 'lazy-refcounts' True
     if refcounts may be updated lazily (default: off) 'refcount-bits'
     Width of reference counts in bits (default: 16)

     Members:
     'file: BlockdevRef'
          Not documented
     'data-file: BlockdevRef' (optional)
          Not documented
     'data-file-raw: boolean' (optional)
          Not documented
     'size: int'
          Not documented
     'version: BlockdevQcow2Version' (optional)
          Not documented
     'backing-file: string' (optional)
          Not documented
     'backing-fmt: BlockdevDriver' (optional)
          Not documented
     'encrypt: QCryptoBlockCreateOptions' (optional)
          Not documented
     'cluster-size: int' (optional)
          Not documented
     'preallocation: PreallocMode' (optional)
          Not documented
     'lazy-refcounts: boolean' (optional)
          Not documented
     'refcount-bits: int' (optional)
          Not documented

     Since: 2.12

 -- Object: BlockdevCreateOptionsQed

     Driver specific image creation options for qed.

     'file' Node to create the image format on 'size' Size of the
     virtual disk in bytes 'backing-file' File name of the backing file
     if a backing file should be used 'backing-fmt' Name of the block
     driver to use for the backing file 'cluster-size' Cluster size in
     bytes (default: 65536) 'table-size' L1/L2 table size (in clusters)

     Members:
     'file: BlockdevRef'
          Not documented
     'size: int'
          Not documented
     'backing-file: string' (optional)
          Not documented
     'backing-fmt: BlockdevDriver' (optional)
          Not documented
     'cluster-size: int' (optional)
          Not documented
     'table-size: int' (optional)
          Not documented

     Since: 2.12

 -- Object: BlockdevCreateOptionsRbd

     Driver specific image creation options for rbd/Ceph.

     'location' Where to store the new image file.  This location cannot
     point to a snapshot.  'size' Size of the virtual disk in bytes
     'cluster-size' RBD object size

     Members:
     'location: BlockdevOptionsRbd'
          Not documented
     'size: int'
          Not documented
     'cluster-size: int' (optional)
          Not documented

     Since: 2.12

 -- Enum: BlockdevVmdkSubformat

     Subformat options for VMDK images

     Values:
     'monolithicSparse'
          Single file image with sparse cluster allocation
     'monolithicFlat'
          Single flat data image and a descriptor file
     'twoGbMaxExtentSparse'
          Data is split into 2GB (per virtual LBA) sparse extent files,
          in addition to a descriptor file
     'twoGbMaxExtentFlat'
          Data is split into 2GB (per virtual LBA) flat extent files, in
          addition to a descriptor file
     'streamOptimized'
          Single file image sparse cluster allocation, optimized for
          streaming over network.

     Since: 4.0

 -- Enum: BlockdevVmdkAdapterType

     Adapter type info for VMDK images

     Values:
     'ide'
          Not documented
     'buslogic'
          Not documented
     'lsilogic'
          Not documented
     'legacyESX'
          Not documented

     Since: 4.0

 -- Object: BlockdevCreateOptionsVmdk

     Driver specific image creation options for VMDK.

     'file' Where to store the new image file.  This refers to the image
     file for monolithcSparse and streamOptimized format, or the
     descriptor file for other formats.  'size' Size of the virtual disk
     in bytes 'extents' Where to store the data extents.  Required for
     monolithcFlat, twoGbMaxExtentSparse and twoGbMaxExtentFlat formats.
     For monolithicFlat, only one entry is required; for twoGbMaxExtent*
     formats, the number of entries required is calculated as
     extent_number = virtual_size / 2GB. Providing more extents than
     will be used is an error.  'subformat' The subformat of the VMDK
     image.  Default: "monolithicSparse".  'backing-file' The path of
     backing file.  Default: no backing file is used.  'adapter-type'
     The adapter type used to fill in the descriptor.  Default: ide.
     'hwversion' Hardware version.  The meaningful options are "4" or
     "6".  Default: "4".  'zeroed-grain' Whether to enable zeroed-grain
     feature for sparse subformats.  Default: false.

     Members:
     'file: BlockdevRef'
          Not documented
     'size: int'
          Not documented
     'extents: array of BlockdevRef' (optional)
          Not documented
     'subformat: BlockdevVmdkSubformat' (optional)
          Not documented
     'backing-file: string' (optional)
          Not documented
     'adapter-type: BlockdevVmdkAdapterType' (optional)
          Not documented
     'hwversion: string' (optional)
          Not documented
     'zeroed-grain: boolean' (optional)
          Not documented

     Since: 4.0

 -- Enum: SheepdogRedundancyType

     'full' Create a fully replicated vdi with x copies 'erasure-coded'
     Create an erasure coded vdi with x data strips and y parity strips

     Values:
     'full'
          Not documented
     'erasure-coded'
          Not documented

     Since: 2.12

 -- Object: SheepdogRedundancyFull

     'copies' Number of copies to use (between 1 and 31)

     Members:
     'copies: int'
          Not documented

     Since: 2.12

 -- Object: SheepdogRedundancyErasureCoded

     'data-strips' Number of data strips to use (one of {2,4,8,16})
     'parity-strips' Number of parity strips to use (between 1 and 15)

     Members:
     'data-strips: int'
          Not documented
     'parity-strips: int'
          Not documented

     Since: 2.12

 -- Object: SheepdogRedundancy

     Members:
     'type: SheepdogRedundancyType'
          Not documented
     The members of 'SheepdogRedundancyFull' when 'type' is "full"
     The members of 'SheepdogRedundancyErasureCoded' when 'type' is "erasure-coded"

     Since: 2.12

 -- Object: BlockdevCreateOptionsSheepdog

     Driver specific image creation options for Sheepdog.

     'location' Where to store the new image file 'size' Size of the
     virtual disk in bytes 'backing-file' File name of a base image
     'preallocation' Preallocation mode for the new image (default: off;
     allowed values: off, full) 'redundancy' Redundancy of the image
     'object-size' Object size of the image

     Members:
     'location: BlockdevOptionsSheepdog'
          Not documented
     'size: int'
          Not documented
     'backing-file: string' (optional)
          Not documented
     'preallocation: PreallocMode' (optional)
          Not documented
     'redundancy: SheepdogRedundancy' (optional)
          Not documented
     'object-size: int' (optional)
          Not documented

     Since: 2.12

 -- Object: BlockdevCreateOptionsSsh

     Driver specific image creation options for SSH.

     'location' Where to store the new image file 'size' Size of the
     virtual disk in bytes

     Members:
     'location: BlockdevOptionsSsh'
          Not documented
     'size: int'
          Not documented

     Since: 2.12

 -- Object: BlockdevCreateOptionsVdi

     Driver specific image creation options for VDI.

     'file' Node to create the image format on 'size' Size of the
     virtual disk in bytes 'preallocation' Preallocation mode for the
     new image (default: off; allowed values: off, metadata)

     Members:
     'file: BlockdevRef'
          Not documented
     'size: int'
          Not documented
     'preallocation: PreallocMode' (optional)
          Not documented

     Since: 2.12

 -- Enum: BlockdevVhdxSubformat

     Values:
     'dynamic'
          Growing image file
     'fixed'
          Preallocated fixed-size image file

     Since: 2.12

 -- Object: BlockdevCreateOptionsVhdx

     Driver specific image creation options for vhdx.

     'file' Node to create the image format on 'size' Size of the
     virtual disk in bytes 'log-size' Log size in bytes, must be a
     multiple of 1 MB (default: 1 MB) 'block-size' Block size in bytes,
     must be a multiple of 1 MB and not larger than 256 MB (default:
     automatically choose a block size depending on the image size)
     'subformat' vhdx subformat (default: dynamic) 'block-state-zero'
     Force use of payload blocks of type 'ZERO'. Non-standard, but
     default.  Do not set to 'off' when using 'qemu-img convert' with
     subformat=dynamic.

     Members:
     'file: BlockdevRef'
          Not documented
     'size: int'
          Not documented
     'log-size: int' (optional)
          Not documented
     'block-size: int' (optional)
          Not documented
     'subformat: BlockdevVhdxSubformat' (optional)
          Not documented
     'block-state-zero: boolean' (optional)
          Not documented

     Since: 2.12

 -- Enum: BlockdevVpcSubformat

     Values:
     'dynamic'
          Growing image file
     'fixed'
          Preallocated fixed-size image file

     Since: 2.12

 -- Object: BlockdevCreateOptionsVpc

     Driver specific image creation options for vpc (VHD).

     'file' Node to create the image format on 'size' Size of the
     virtual disk in bytes 'subformat' vhdx subformat (default: dynamic)
     'force-size' Force use of the exact byte size instead of rounding
     to the next size that can be represented in CHS geometry (default:
     false)

     Members:
     'file: BlockdevRef'
          Not documented
     'size: int'
          Not documented
     'subformat: BlockdevVpcSubformat' (optional)
          Not documented
     'force-size: boolean' (optional)
          Not documented

     Since: 2.12

 -- Object: BlockdevCreateOptions

     Options for creating an image format on a given node.

     'driver' block driver to create the image format

     Members:
     'driver: BlockdevDriver'
          Not documented
     The members of 'BlockdevCreateOptionsFile' when 'driver' is "file"
     The members of 'BlockdevCreateOptionsGluster' when 'driver' is "gluster"
     The members of 'BlockdevCreateOptionsLUKS' when 'driver' is "luks"
     The members of 'BlockdevCreateOptionsNfs' when 'driver' is "nfs"
     The members of 'BlockdevCreateOptionsParallels' when 'driver' is "parallels"
     The members of 'BlockdevCreateOptionsQcow' when 'driver' is "qcow"
     The members of 'BlockdevCreateOptionsQcow2' when 'driver' is "qcow2"
     The members of 'BlockdevCreateOptionsQed' when 'driver' is "qed"
     The members of 'BlockdevCreateOptionsRbd' when 'driver' is "rbd"
     The members of 'BlockdevCreateOptionsSheepdog' when 'driver' is "sheepdog"
     The members of 'BlockdevCreateOptionsSsh' when 'driver' is "ssh"
     The members of 'BlockdevCreateOptionsVdi' when 'driver' is "vdi"
     The members of 'BlockdevCreateOptionsVhdx' when 'driver' is "vhdx"
     The members of 'BlockdevCreateOptionsVmdk' when 'driver' is "vmdk"
     The members of 'BlockdevCreateOptionsVpc' when 'driver' is "vpc"

     Since: 2.12

 -- Command: blockdev-create

     Starts a job to create an image format on a given node.  The job is
     automatically finalized, but a manual job-dismiss is required.

     Arguments:
     'job-id: string'
          Identifier for the newly created job.
     'options: BlockdevCreateOptions'
          Options for the image creation.

     Since: 3.0

 -- Command: blockdev-open-tray

     Opens a block device's tray.  If there is a block driver state tree
     inserted as a medium, it will become inaccessible to the guest (but
     it will remain associated to the block device, so closing the tray
     will make it accessible again).

     If the tray was already open before, this will be a no-op.

     Once the tray opens, a DEVICE_TRAY_MOVED event is emitted.  There
     are cases in which no such event will be generated, these include:
        - if the guest has locked the tray, 'force' is false and the
          guest does not respond to the eject request
        - if the BlockBackend denoted by 'device' does not have a guest
          device attached to it
        - if the guest device does not have an actual tray

     Arguments:
     'device: string' (optional)
          Block device name (deprecated, use 'id' instead)
     'id: string' (optional)
          The name or QOM path of the guest device (since: 2.8)
     'force: boolean' (optional)
          if false (the default), an eject request will be sent to the
          guest if it has locked the tray (and the tray will not be
          opened immediately); if true, the tray will be opened
          regardless of whether it is locked

     Since: 2.5

     Example:
          -> { "execute": "blockdev-open-tray",
               "arguments": { "id": "ide0-1-0" } }

          <- { "timestamp": { "seconds": 1418751016,
                              "microseconds": 716996 },
               "event": "DEVICE_TRAY_MOVED",
               "data": { "device": "ide1-cd0",
                         "id": "ide0-1-0",
                         "tray-open": true } }

          <- { "return": {} }

 -- Command: blockdev-close-tray

     Closes a block device's tray.  If there is a block driver state
     tree associated with the block device (which is currently ejected),
     that tree will be loaded as the medium.

     If the tray was already closed before, this will be a no-op.

     Arguments:
     'device: string' (optional)
          Block device name (deprecated, use 'id' instead)
     'id: string' (optional)
          The name or QOM path of the guest device (since: 2.8)

     Since: 2.5

     Example:
          -> { "execute": "blockdev-close-tray",
               "arguments": { "id": "ide0-1-0" } }

          <- { "timestamp": { "seconds": 1418751345,
                              "microseconds": 272147 },
               "event": "DEVICE_TRAY_MOVED",
               "data": { "device": "ide1-cd0",
                         "id": "ide0-1-0",
                         "tray-open": false } }

          <- { "return": {} }

 -- Command: blockdev-remove-medium

     Removes a medium (a block driver state tree) from a block device.
     That block device's tray must currently be open (unless there is no
     attached guest device).

     If the tray is open and there is no medium inserted, this will be a
     no-op.

     Arguments:
     'id: string'
          The name or QOM path of the guest device

     Since: 2.12

     Example:
          -> { "execute": "blockdev-remove-medium",
               "arguments": { "id": "ide0-1-0" } }

          <- { "error": { "class": "GenericError",
                          "desc": "Tray of device 'ide0-1-0' is not open" } }

          -> { "execute": "blockdev-open-tray",
               "arguments": { "id": "ide0-1-0" } }

          <- { "timestamp": { "seconds": 1418751627,
                              "microseconds": 549958 },
               "event": "DEVICE_TRAY_MOVED",
               "data": { "device": "ide1-cd0",
                         "id": "ide0-1-0",
                         "tray-open": true } }

          <- { "return": {} }

          -> { "execute": "blockdev-remove-medium",
               "arguments": { "id": "ide0-1-0" } }

          <- { "return": {} }

 -- Command: blockdev-insert-medium

     Inserts a medium (a block driver state tree) into a block device.
     That block device's tray must currently be open (unless there is no
     attached guest device) and there must be no medium inserted
     already.

     Arguments:
     'id: string'
          The name or QOM path of the guest device
     'node-name: string'
          name of a node in the block driver state graph

     Since: 2.12

     Example:
          -> { "execute": "blockdev-add",
               "arguments": {
                   "node-name": "node0",
                   "driver": "raw",
                   "file": { "driver": "file",
                             "filename": "fedora.iso" } } }
          <- { "return": {} }

          -> { "execute": "blockdev-insert-medium",
               "arguments": { "id": "ide0-1-0",
                              "node-name": "node0" } }

          <- { "return": {} }

 -- Enum: BlockdevChangeReadOnlyMode

     Specifies the new read-only mode of a block device subject to the
     'blockdev-change-medium' command.

     Values:
     'retain'
          Retains the current read-only mode
     'read-only'
          Makes the device read-only
     'read-write'
          Makes the device writable

     Since: 2.3

 -- Command: blockdev-change-medium

     Changes the medium inserted into a block device by ejecting the
     current medium and loading a new image file which is inserted as
     the new medium (this command combines blockdev-open-tray,
     blockdev-remove-medium, blockdev-insert-medium and
     blockdev-close-tray).

     Arguments:
     'device: string' (optional)
          Block device name (deprecated, use 'id' instead)
     'id: string' (optional)
          The name or QOM path of the guest device (since: 2.8)
     'filename: string'
          filename of the new image to be loaded
     'format: string' (optional)
          format to open the new image with (defaults to the probed
          format)
     'read-only-mode: BlockdevChangeReadOnlyMode' (optional)
          change the read-only mode of the device; defaults to 'retain'

     Since: 2.5

     Examples:
          1. Change a removable medium

          -> { "execute": "blockdev-change-medium",
               "arguments": { "id": "ide0-1-0",
                              "filename": "/srv/images/Fedora-12-x86_64-DVD.iso",
                              "format": "raw" } }
          <- { "return": {} }

          2. Load a read-only medium into a writable drive

          -> { "execute": "blockdev-change-medium",
               "arguments": { "id": "floppyA",
                              "filename": "/srv/images/ro.img",
                              "format": "raw",
                              "read-only-mode": "retain" } }

          <- { "error":
               { "class": "GenericError",
                 "desc": "Could not open '/srv/images/ro.img': Permission denied" } }

          -> { "execute": "blockdev-change-medium",
               "arguments": { "id": "floppyA",
                              "filename": "/srv/images/ro.img",
                              "format": "raw",
                              "read-only-mode": "read-only" } }

          <- { "return": {} }

 -- Enum: BlockErrorAction

     An enumeration of action that has been taken when a DISK I/O occurs

     Values:
     'ignore'
          error has been ignored
     'report'
          error has been reported to the device
     'stop'
          error caused VM to be stopped

     Since: 2.1

 -- Event: BLOCK_IMAGE_CORRUPTED

     Emitted when a disk image is being marked corrupt.  The image can
     be identified by its device or node name.  The 'device' field is
     always present for compatibility reasons, but it can be empty ("")
     if the image does not have a device name associated.

     Arguments:
     'device: string'
          device name.  This is always present for compatibility
          reasons, but it can be empty ("") if the image does not have a
          device name associated.
     'node-name: string' (optional)
          node name (Since: 2.4)
     'msg: string'
          informative message for human consumption, such as the kind of
          corruption being detected.  It should not be parsed by machine
          as it is not guaranteed to be stable
     'offset: int' (optional)
          if the corruption resulted from an image access, this is the
          host's access offset into the image
     'size: int' (optional)
          if the corruption resulted from an image access, this is the
          access size
     'fatal: boolean'
          if set, the image is marked corrupt and therefore unusable
          after this event and must be repaired (Since 2.2; before,
          every BLOCK_IMAGE_CORRUPTED event was fatal)

     Note: If action is "stop", a STOP event will eventually follow the
     BLOCK_IO_ERROR event.

     Example:
          <- { "event": "BLOCK_IMAGE_CORRUPTED",
               "data": { "device": "ide0-hd0", "node-name": "node0",
                         "msg": "Prevented active L1 table overwrite", "offset": 196608,
                         "size": 65536 },
               "timestamp": { "seconds": 1378126126, "microseconds": 966463 } }

     Since: 1.7

 -- Event: BLOCK_IO_ERROR

     Emitted when a disk I/O error occurs

     Arguments:
     'device: string'
          device name.  This is always present for compatibility
          reasons, but it can be empty ("") if the image does not have a
          device name associated.
     'node-name: string' (optional)
          node name.  Note that errors may be reported for the root node
          that is directly attached to a guest device rather than for
          the node where the error occurred.  The node name is not
          present if the drive is empty.  (Since: 2.8)
     'operation: IoOperationType'
          I/O operation
     'action: BlockErrorAction'
          action that has been taken
     'nospace: boolean' (optional)
          true if I/O error was caused due to a no-space condition.
          This key is only present if query-block's io-status is
          present, please see query-block documentation for more
          information (since: 2.2)
     'reason: string'
          human readable string describing the error cause.  (This field
          is a debugging aid for humans, it should not be parsed by
          applications) (since: 2.2)

     Note: If action is "stop", a STOP event will eventually follow the
     BLOCK_IO_ERROR event

     Since: 0.13.0

     Example:
          <- { "event": "BLOCK_IO_ERROR",
               "data": { "device": "ide0-hd1",
                         "node-name": "#block212",
                         "operation": "write",
                         "action": "stop" },
               "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }

 -- Event: BLOCK_JOB_COMPLETED

     Emitted when a block job has completed

     Arguments:
     'type: JobType'
          job type
     'device: string'
          The job identifier.  Originally the device name but other
          values are allowed since QEMU 2.7
     'len: int'
          maximum progress value
     'offset: int'
          current progress value.  On success this is equal to len.  On
          failure this is less than len
     'speed: int'
          rate limit, bytes per second
     'error: string' (optional)
          error message.  Only present on failure.  This field contains
          a human-readable error message.  There are no semantics other
          than that streaming has failed and clients should not try to
          interpret the error string

     Since: 1.1

     Example:
          <- { "event": "BLOCK_JOB_COMPLETED",
               "data": { "type": "stream", "device": "virtio-disk0",
                         "len": 10737418240, "offset": 10737418240,
                         "speed": 0 },
               "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }

 -- Event: BLOCK_JOB_CANCELLED

     Emitted when a block job has been cancelled

     Arguments:
     'type: JobType'
          job type
     'device: string'
          The job identifier.  Originally the device name but other
          values are allowed since QEMU 2.7
     'len: int'
          maximum progress value
     'offset: int'
          current progress value.  On success this is equal to len.  On
          failure this is less than len
     'speed: int'
          rate limit, bytes per second

     Since: 1.1

     Example:
          <- { "event": "BLOCK_JOB_CANCELLED",
               "data": { "type": "stream", "device": "virtio-disk0",
                         "len": 10737418240, "offset": 134217728,
                         "speed": 0 },
               "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }

 -- Event: BLOCK_JOB_ERROR

     Emitted when a block job encounters an error

     Arguments:
     'device: string'
          The job identifier.  Originally the device name but other
          values are allowed since QEMU 2.7
     'operation: IoOperationType'
          I/O operation
     'action: BlockErrorAction'
          action that has been taken

     Since: 1.3

     Example:
          <- { "event": "BLOCK_JOB_ERROR",
               "data": { "device": "ide0-hd1",
                         "operation": "write",
                         "action": "stop" },
               "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }

 -- Event: BLOCK_JOB_READY

     Emitted when a block job is ready to complete

     Arguments:
     'type: JobType'
          job type
     'device: string'
          The job identifier.  Originally the device name but other
          values are allowed since QEMU 2.7
     'len: int'
          maximum progress value
     'offset: int'
          current progress value.  On success this is equal to len.  On
          failure this is less than len
     'speed: int'
          rate limit, bytes per second

     Note: The "ready to complete" status is always reset by a
     'BLOCK_JOB_ERROR' event

     Since: 1.3

     Example:
          <- { "event": "BLOCK_JOB_READY",
               "data": { "device": "drive0", "type": "mirror", "speed": 0,
                         "len": 2097152, "offset": 2097152 }
               "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }

 -- Event: BLOCK_JOB_PENDING

     Emitted when a block job is awaiting explicit authorization to
     finalize graph changes via 'block-job-finalize'.  If this job is
     part of a transaction, it will not emit this event until the
     transaction has converged first.

     Arguments:
     'type: JobType'
          job type
     'id: string'
          The job identifier.

     Since: 2.12

     Example:
          <- { "event": "BLOCK_JOB_WAITING",
               "data": { "device": "drive0", "type": "mirror" },
               "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }

 -- Enum: PreallocMode

     Preallocation mode of QEMU image file

     Values:
     'off'
          no preallocation
     'metadata'
          preallocate only for metadata
     'falloc'
          like 'full' preallocation but allocate disk space by
          posix_fallocate() rather than writing data.
     'full'
          preallocate all data by writing it to the device to ensure
          disk space is really available.  This data may or may not be
          zero, depending on the image format and storage.  'full'
          preallocation also sets up metadata correctly.

     Since: 2.2

 -- Event: BLOCK_WRITE_THRESHOLD

     Emitted when writes on block device reaches or exceeds the
     configured write threshold.  For thin-provisioned devices, this
     means the device should be extended to avoid pausing for disk
     exhaustion.  The event is one shot.  Once triggered, it needs to be
     re-registered with another block-set-write-threshold command.

     Arguments:
     'node-name: string'
          graph node name on which the threshold was exceeded.
     'amount-exceeded: int'
          amount of data which exceeded the threshold, in bytes.
     'write-threshold: int'
          last configured threshold, in bytes.

     Since: 2.3

 -- Command: block-set-write-threshold

     Change the write threshold for a block drive.  An event will be
     delivered if a write to this block drive crosses the configured
     threshold.  The threshold is an offset, thus must be non-negative.
     Default is no write threshold.  Setting the threshold to zero
     disables it.

     This is useful to transparently resize thin-provisioned drives
     without the guest OS noticing.

     Arguments:
     'node-name: string'
          graph node name on which the threshold must be set.
     'write-threshold: int'
          configured threshold for the block device, bytes.  Use 0 to
          disable the threshold.

     Since: 2.3

     Example:
          -> { "execute": "block-set-write-threshold",
               "arguments": { "node-name": "mydev",
                              "write-threshold": 17179869184 } }
          <- { "return": {} }

 -- Command: x-blockdev-change

     Dynamically reconfigure the block driver state graph.  It can be
     used to add, remove, insert or replace a graph node.  Currently
     only the Quorum driver implements this feature to add or remove its
     child.  This is useful to fix a broken quorum child.

     If 'node' is specified, it will be inserted under 'parent'.
     'child' may not be specified in this case.  If both 'parent' and
     'child' are specified but 'node' is not, 'child' will be detached
     from 'parent'.

     Arguments:
     'parent: string'
          the id or name of the parent node.
     'child: string' (optional)
          the name of a child under the given parent node.
     'node: string' (optional)
          the name of the node that will be added.

     Note: this command is experimental, and its API is not stable.  It
     does not support all kinds of operations, all kinds of children,
     nor all block drivers.

     FIXME Removing children from a quorum node means introducing gaps
     in the child indices.  This cannot be represented in the 'children'
     list of BlockdevOptionsQuorum, as returned by
     .bdrv_refresh_filename().

     Warning: The data in a new quorum child MUST be consistent with
     that of the rest of the array.

     Since: 2.7

     Example:
          1. Add a new node to a quorum
          -> { "execute": "blockdev-add",
               "arguments": {
                   "driver": "raw",
                   "node-name": "new_node",
                   "file": { "driver": "file",
                             "filename": "test.raw" } } }
          <- { "return": {} }
          -> { "execute": "x-blockdev-change",
               "arguments": { "parent": "disk1",
                              "node": "new_node" } }
          <- { "return": {} }

          2. Delete a quorum's node
          -> { "execute": "x-blockdev-change",
               "arguments": { "parent": "disk1",
                              "child": "children.1" } }
          <- { "return": {} }

 -- Command: x-blockdev-set-iothread

     Move 'node' and its children into the 'iothread'.  If 'iothread' is
     null then move 'node' and its children into the main loop.

     The node must not be attached to a BlockBackend.

     Arguments:
     'node-name: string'
          the name of the block driver node
     'iothread: StrOrNull'
          the name of the IOThread object or null for the main loop
     'force: boolean' (optional)
          true if the node and its children should be moved when a
          BlockBackend is already attached

     Note: this command is experimental and intended for test cases that
     need control over IOThreads only.

     Since: 2.12

     Example:
          1. Move a node into an IOThread
          -> { "execute": "x-blockdev-set-iothread",
               "arguments": { "node-name": "disk1",
                              "iothread": "iothread0" } }
          <- { "return": {} }

          2. Move a node into the main loop
          -> { "execute": "x-blockdev-set-iothread",
               "arguments": { "node-name": "disk1",
                              "iothread": null } }
          <- { "return": {} }

1.8.3 Additional block stuff (VM related)
-----------------------------------------

 -- Enum: BiosAtaTranslation

     Policy that BIOS should use to interpret cylinder/head/sector
     addresses.  Note that Bochs BIOS and SeaBIOS will not actually
     translate logical CHS to physical; instead, they will use logical
     block addressing.

     Values:
     'auto'
          If cylinder/heads/sizes are passed, choose between none and
          LBA depending on the size of the disk.  If they are not
          passed, choose none if QEMU can guess that the disk had 16 or
          fewer heads, large if QEMU can guess that the disk had 131072
          or fewer tracks across all heads (i.e.
          cylinders*heads<131072), otherwise LBA.
     'none'
          The physical disk geometry is equal to the logical geometry.
     'lba'
          Assume 63 sectors per track and one of 16, 32, 64, 128 or 255
          heads (if fewer than 255 are enough to cover the whole disk
          with 1024 cylinders/head).  The number of cylinders/head is
          then computed based on the number of sectors and heads.
     'large'
          The number of cylinders per head is scaled down to 1024 by
          correspondingly scaling up the number of heads.
     'rechs'
          Same as 'large', but first convert a 16-head geometry to
          15-head, by proportionally scaling up the number of
          cylinders/head.

     Since: 2.0

 -- Enum: FloppyDriveType

     Type of Floppy drive to be emulated by the Floppy Disk Controller.

     Values:
     '144'
          1.44MB 3.5" drive
     '288'
          2.88MB 3.5" drive
     '120'
          1.2MB 5.25" drive
     'none'
          No drive connected
     'auto'
          Automatically determined by inserted media at boot

     Since: 2.6

 -- Object: BlockdevSnapshotInternal

     Members:
     'device: string'
          the device name or node-name of a root node to generate the
          snapshot from
     'name: string'
          the name of the internal snapshot to be created

     Notes: In transaction, if 'name' is empty, or any snapshot matching
     'name' exists, the operation will fail.  Only some image formats
     support it, for example, qcow2, rbd, and sheepdog.

     Since: 1.7

 -- Object: PRManagerInfo

     Information about a persistent reservation manager

     Members:
     'id: string'
          the identifier of the persistent reservation manager
     'connected: boolean'
          true if the persistent reservation manager is connected to the
          underlying storage or helper

     Since: 3.0

 -- Command: query-pr-managers

     Returns a list of information about each persistent reservation
     manager.

     Returns: a list of 'PRManagerInfo' for each persistent reservation
     manager

     Since: 3.0

 -- Command: blockdev-snapshot-internal-sync

     Synchronously take an internal snapshot of a block device, when the
     format of the image used supports it.  If the name is an empty
     string, or a snapshot with name already exists, the operation will
     fail.

     For the arguments, see the documentation of
     BlockdevSnapshotInternal.

     Returns: nothing on success

     If 'device' is not a valid block device, GenericError

     If any snapshot matching 'name' exists, or 'name' is empty,
     GenericError

     If the format of the image used does not support it,
     BlockFormatFeatureNotSupported

     Since: 1.7

     Example:
          -> { "execute": "blockdev-snapshot-internal-sync",
               "arguments": { "device": "ide-hd0",
                              "name": "snapshot0" }
             }
          <- { "return": {} }

 -- Command: blockdev-snapshot-delete-internal-sync

     Synchronously delete an internal snapshot of a block device, when
     the format of the image used support it.  The snapshot is
     identified by name or id or both.  One of the name or id is
     required.  Return SnapshotInfo for the successfully deleted
     snapshot.

     Arguments:
     'device: string'
          the device name or node-name of a root node to delete the
          snapshot from
     'id: string' (optional)
          optional the snapshot's ID to be deleted
     'name: string' (optional)
          optional the snapshot's name to be deleted

     Returns: SnapshotInfo on success If 'device' is not a valid block
     device, GenericError If snapshot not found, GenericError If the
     format of the image used does not support it,
     BlockFormatFeatureNotSupported If 'id' and 'name' are both not
     specified, GenericError

     Since: 1.7

     Example:
          -> { "execute": "blockdev-snapshot-delete-internal-sync",
               "arguments": { "device": "ide-hd0",
                              "name": "snapshot0" }
             }
          <- { "return": {
                             "id": "1",
                             "name": "snapshot0",
                             "vm-state-size": 0,
                             "date-sec": 1000012,
                             "date-nsec": 10,
                             "vm-clock-sec": 100,
                             "vm-clock-nsec": 20
               }
             }

 -- Command: eject

     Ejects a device from a removable drive.

     Arguments:
     'device: string' (optional)
          Block device name (deprecated, use 'id' instead)
     'id: string' (optional)
          The name or QOM path of the guest device (since: 2.8)
     'force: boolean' (optional)
          If true, eject regardless of whether the drive is locked.  If
          not specified, the default value is false.

     Returns: Nothing on success

     If 'device' is not a valid block device, DeviceNotFound

     Notes: Ejecting a device with no media results in success

     Since: 0.14.0

     Example:
          -> { "execute": "eject", "arguments": { "id": "ide1-0-1" } }
          <- { "return": {} }

 -- Command: nbd-server-start

     Start an NBD server listening on the given host and port.  Block
     devices can then be exported using 'nbd-server-add'.  The NBD
     server will present them as named exports; for example, another
     QEMU instance could refer to them as
     "nbd:HOST:PORT:exportname=NAME".

     Arguments:
     'addr: SocketAddressLegacy'
          Address on which to listen.
     'tls-creds: string' (optional)
          ID of the TLS credentials object (since 2.6).
     'tls-authz: string' (optional)
          ID of the QAuthZ authorization object used to validate the
          client's x509 distinguished name.  This object is is only
          resolved at time of use, so can be deleted and recreated on
          the fly while the NBD server is active.  If missing, it will
          default to denying access (since 4.0).

     Returns: error if the server is already running.

     Since: 1.3.0

 -- Command: nbd-server-add

     Export a block node to QEMU's embedded NBD server.

     Arguments:
     'device: string'
          The device name or node name of the node to be exported
     'name: string' (optional)
          Export name.  If unspecified, the 'device' parameter is used
          as the export name.  (Since 2.12)
     'writable: boolean' (optional)
          Whether clients should be able to write to the device via the
          NBD connection (default false).
     'bitmap: string' (optional)
          Also export the dirty bitmap reachable from 'device', so the
          NBD client can use NBD_OPT_SET_META_CONTEXT with
          "qemu:dirty-bitmap:NAME" to inspect the bitmap.  (since 4.0)

     Returns: error if the server is not running, or export with the
     same name already exists.

     Since: 1.3.0

 -- Enum: NbdServerRemoveMode

     Mode for removing an NBD export.

     Values:
     'safe'
          Remove export if there are no existing connections, fail
          otherwise.
     'hard'
          Drop all connections immediately and remove export.
     Potential additional modes to be added in the future:

     hide: Just hide export from new clients, leave existing connections
     as is.  Remove export after all clients are disconnected.

     soft: Hide export from new clients, answer with ESHUTDOWN for all
     further requests from existing clients.

     Since: 2.12

 -- Command: nbd-server-remove

     Remove NBD export by name.

     Arguments:
     'name: string'
          Export name.
     'mode: NbdServerRemoveMode' (optional)
          Mode of command operation.  See 'NbdServerRemoveMode'
          description.  Default is 'safe'.

     Returns: error if
        - the server is not running
        - export is not found
        - mode is 'safe' and there are existing connections

     Since: 2.12

 -- Command: nbd-server-stop

     Stop QEMU's embedded NBD server, and unregister all devices
     previously added via 'nbd-server-add'.

     Since: 1.3.0

 -- Event: DEVICE_TRAY_MOVED

     Emitted whenever the tray of a removable device is moved by the
     guest or by HMP/QMP commands

     Arguments:
     'device: string'
          Block device name.  This is always present for compatibility
          reasons, but it can be empty ("") if the image does not have a
          device name associated.
     'id: string'
          The name or QOM path of the guest device (since 2.8)
     'tray-open: boolean'
          true if the tray has been opened or false if it has been
          closed

     Since: 1.1

     Example:
          <- { "event": "DEVICE_TRAY_MOVED",
               "data": { "device": "ide1-cd0",
                         "id": "/machine/unattached/device[22]",
                         "tray-open": true
               },
               "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }

 -- Event: PR_MANAGER_STATUS_CHANGED

     Emitted whenever the connected status of a persistent reservation
     manager changes.

     Arguments:
     'id: string'
          The id of the PR manager object
     'connected: boolean'
          true if the PR manager is connected to a backend

     Since: 3.0

     Example:
          <- { "event": "PR_MANAGER_STATUS_CHANGED",
               "data": { "id": "pr-helper0",
                         "connected": true
               },
               "timestamp": { "seconds": 1519840375, "microseconds": 450486 } }

 -- Enum: QuorumOpType

     An enumeration of the quorum operation types

     Values:
     'read'
          read operation
     'write'
          write operation
     'flush'
          flush operation

     Since: 2.6

 -- Event: QUORUM_FAILURE

     Emitted by the Quorum block driver if it fails to establish a
     quorum

     Arguments:
     'reference: string'
          device name if defined else node name
     'sector-num: int'
          number of the first sector of the failed read operation
     'sectors-count: int'
          failed read operation sector count

     Note: This event is rate-limited.

     Since: 2.0

     Example:
          <- { "event": "QUORUM_FAILURE",
               "data": { "reference": "usr1", "sector-num": 345435, "sectors-count": 5 },
               "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }

 -- Event: QUORUM_REPORT_BAD

     Emitted to report a corruption of a Quorum file

     Arguments:
     'type: QuorumOpType'
          quorum operation type (Since 2.6)
     'error: string' (optional)
          error message.  Only present on failure.  This field contains
          a human-readable error message.  There are no semantics other
          than that the block layer reported an error and clients should
          not try to interpret the error string.
     'node-name: string'
          the graph node name of the block driver state
     'sector-num: int'
          number of the first sector of the failed read operation
     'sectors-count: int'
          failed read operation sector count

     Note: This event is rate-limited.

     Since: 2.0

     Example:
          1. Read operation

          { "event": "QUORUM_REPORT_BAD",
               "data": { "node-name": "node0", "sector-num": 345435, "sectors-count": 5,
                         "type": "read" },
               "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }

          2. Flush operation

          { "event": "QUORUM_REPORT_BAD",
               "data": { "node-name": "node0", "sector-num": 0, "sectors-count": 2097120,
                         "type": "flush", "error": "Broken pipe" },
               "timestamp": { "seconds": 1456406829, "microseconds": 291763 } }

1.9 Character devices
=====================

 -- Object: ChardevInfo

     Information about a character device.

     Members:
     'label: string'
          the label of the character device
     'filename: string'
          the filename of the character device
     'frontend-open: boolean'
          shows whether the frontend device attached to this backend
          (eg.  with the chardev=...  option) is in open or closed state
          (since 2.1)

     Notes: 'filename' is encoded using the QEMU command line character
     device encoding.  See the QEMU man page for details.

     Since: 0.14.0

 -- Command: query-chardev

     Returns information about current character devices.

     Returns: a list of 'ChardevInfo'

     Since: 0.14.0

     Example:
          -> { "execute": "query-chardev" }
          <- {
                "return": [
                   {
                      "label": "charchannel0",
                      "filename": "unix:/var/lib/libvirt/qemu/seabios.rhel6.agent,server",
                      "frontend-open": false
                   },
                   {
                      "label": "charmonitor",
                      "filename": "unix:/var/lib/libvirt/qemu/seabios.rhel6.monitor,server",
                      "frontend-open": true
                   },
                   {
                      "label": "charserial0",
                      "filename": "pty:/dev/pts/2",
                      "frontend-open": true
                   }
                ]
             }

 -- Object: ChardevBackendInfo

     Information about a character device backend

     Members:
     'name: string'
          The backend name

     Since: 2.0

 -- Command: query-chardev-backends

     Returns information about character device backends.

     Returns: a list of 'ChardevBackendInfo'

     Since: 2.0

     Example:
          -> { "execute": "query-chardev-backends" }
          <- {
                "return":[
                   {
                      "name":"udp"
                   },
                   {
                      "name":"tcp"
                   },
                   {
                      "name":"unix"
                   },
                   {
                      "name":"spiceport"
                   }
                ]
             }

 -- Enum: DataFormat

     An enumeration of data format.

     Values:
     'utf8'
          Data is a UTF-8 string (RFC 3629)
     'base64'
          Data is Base64 encoded binary (RFC 3548)

     Since: 1.4

 -- Command: ringbuf-write

     Write to a ring buffer character device.

     Arguments:
     'device: string'
          the ring buffer character device name
     'data: string'
          data to write
     'format: DataFormat' (optional)
          data encoding (default 'utf8').
             - base64: data must be base64 encoded text.  Its binary
               decoding gets written.
             - utf8: data's UTF-8 encoding is written
             - data itself is always Unicode regardless of format, like
               any other string.

     Returns: Nothing on success

     Since: 1.4

     Example:
          -> { "execute": "ringbuf-write",
               "arguments": { "device": "foo",
                              "data": "abcdefgh",
                              "format": "utf8" } }
          <- { "return": {} }

 -- Command: ringbuf-read

     Read from a ring buffer character device.

     Arguments:
     'device: string'
          the ring buffer character device name
     'size: int'
          how many bytes to read at most
     'format: DataFormat' (optional)
          data encoding (default 'utf8').
             - base64: the data read is returned in base64 encoding.
             - utf8: the data read is interpreted as UTF-8.  Bug: can
               screw up when the buffer contains invalid UTF-8
               sequences, NUL characters, after the ring buffer lost
               data, and when reading stops because the size limit is
               reached.
             - The return value is always Unicode regardless of format,
               like any other string.

     Returns: data read from the device

     Since: 1.4

     Example:
          -> { "execute": "ringbuf-read",
               "arguments": { "device": "foo",
                              "size": 1000,
                              "format": "utf8" } }
          <- { "return": "abcdefgh" }

 -- Object: ChardevCommon

     Configuration shared across all chardev backends

     Members:
     'logfile: string' (optional)
          The name of a logfile to save output
     'logappend: boolean' (optional)
          true to append instead of truncate (default to false to
          truncate)

     Since: 2.6

 -- Object: ChardevFile

     Configuration info for file chardevs.

     Members:
     'in: string' (optional)
          The name of the input file
     'out: string'
          The name of the output file
     'append: boolean' (optional)
          Open the file in append mode (default false to truncate)
          (Since 2.6)
     The members of 'ChardevCommon'

     Since: 1.4

 -- Object: ChardevHostdev

     Configuration info for device and pipe chardevs.

     Members:
     'device: string'
          The name of the special file for the device, i.e.  /dev/ttyS0
          on Unix or COM1: on Windows
     The members of 'ChardevCommon'

     Since: 1.4

 -- Object: ChardevSocket

     Configuration info for (stream) socket chardevs.

     Members:
     'addr: SocketAddressLegacy'
          socket address to listen on (server=true) or connect to
          (server=false)
     'tls-creds: string' (optional)
          the ID of the TLS credentials object (since 2.6)
     'tls-authz: string' (optional)
          the ID of the QAuthZ authorization object against which the
          client's x509 distinguished name will be validated.  This
          object is only resolved at time of use, so can be deleted and
          recreated on the fly while the chardev server is active.  If
          missing, it will default to denying access (since 4.0)
     'server: boolean' (optional)
          create server socket (default: true)
     'wait: boolean' (optional)
          wait for incoming connection on server sockets (default:
          false).
     'nodelay: boolean' (optional)
          set TCP_NODELAY socket option (default: false)
     'telnet: boolean' (optional)
          enable telnet protocol on server sockets (default: false)
     'tn3270: boolean' (optional)
          enable tn3270 protocol on server sockets (default: false)
          (Since: 2.10)
     'websocket: boolean' (optional)
          enable websocket protocol on server sockets (default: false)
          (Since: 3.1)
     'reconnect: int' (optional)
          For a client socket, if a socket is disconnected, then attempt
          a reconnect after the given number of seconds.  Setting this
          to zero disables this function.  (default: 0) (Since: 2.2)
     The members of 'ChardevCommon'

     Since: 1.4

 -- Object: ChardevUdp

     Configuration info for datagram socket chardevs.

     Members:
     'remote: SocketAddressLegacy'
          remote address
     'local: SocketAddressLegacy' (optional)
          local address
     The members of 'ChardevCommon'

     Since: 1.5

 -- Object: ChardevMux

     Configuration info for mux chardevs.

     Members:
     'chardev: string'
          name of the base chardev.
     The members of 'ChardevCommon'

     Since: 1.5

 -- Object: ChardevStdio

     Configuration info for stdio chardevs.

     Members:
     'signal: boolean' (optional)
          Allow signals (such as SIGINT triggered by ^C) be delivered to
          qemu.  Default: true in -nographic mode, false otherwise.
     The members of 'ChardevCommon'

     Since: 1.5

 -- Object: ChardevSpiceChannel

     Configuration info for spice vm channel chardevs.

     Members:
     'type: string'
          kind of channel (for example vdagent).
     The members of 'ChardevCommon'

     Since: 1.5

     If: 'defined(CONFIG_SPICE)'

 -- Object: ChardevSpicePort

     Configuration info for spice port chardevs.

     Members:
     'fqdn: string'
          name of the channel (see docs/spice-port-fqdn.txt)
     The members of 'ChardevCommon'

     Since: 1.5

     If: 'defined(CONFIG_SPICE)'

 -- Object: ChardevVC

     Configuration info for virtual console chardevs.

     Members:
     'width: int' (optional)
          console width, in pixels
     'height: int' (optional)
          console height, in pixels
     'cols: int' (optional)
          console width, in chars
     'rows: int' (optional)
          console height, in chars
     The members of 'ChardevCommon'

     Since: 1.5

 -- Object: ChardevRingbuf

     Configuration info for ring buffer chardevs.

     Members:
     'size: int' (optional)
          ring buffer size, must be power of two, default is 65536
     The members of 'ChardevCommon'

     Since: 1.5

 -- Object: ChardevBackend

     Configuration info for the new chardev backend.

     Members:
     'type'
          One of "file", "serial", "parallel", "pipe", "socket", "udp",
          "pty", "null", "mux", "msmouse", "wctablet", "braille",
          "testdev", "stdio", "console", "spicevmc", "spiceport", "vc",
          "ringbuf", "memory"
     'data: ChardevFile' when 'type' is "file"
     'data: ChardevHostdev' when 'type' is "serial"
     'data: ChardevHostdev' when 'type' is "parallel"
     'data: ChardevHostdev' when 'type' is "pipe"
     'data: ChardevSocket' when 'type' is "socket"
     'data: ChardevUdp' when 'type' is "udp"
     'data: ChardevCommon' when 'type' is "pty"
     'data: ChardevCommon' when 'type' is "null"
     'data: ChardevMux' when 'type' is "mux"
     'data: ChardevCommon' when 'type' is "msmouse"
     'data: ChardevCommon' when 'type' is "wctablet"
     'data: ChardevCommon' when 'type' is "braille"
     'data: ChardevCommon' when 'type' is "testdev"
     'data: ChardevStdio' when 'type' is "stdio"
     'data: ChardevCommon' when 'type' is "console"
     'data: ChardevSpiceChannel' when 'type' is "spicevmc" (If: 'defined(CONFIG_SPICE)')
     'data: ChardevSpicePort' when 'type' is "spiceport" (If: 'defined(CONFIG_SPICE)')
     'data: ChardevVC' when 'type' is "vc"
     'data: ChardevRingbuf' when 'type' is "ringbuf"
     'data: ChardevRingbuf' when 'type' is "memory"

     Since: 1.4 (testdev since 2.2, wctablet since 2.9)

 -- Object: ChardevReturn

     Return info about the chardev backend just created.

     Members:
     'pty: string' (optional)
          name of the slave pseudoterminal device, present if and only
          if a chardev of type 'pty' was created

     Since: 1.4

 -- Command: chardev-add

     Add a character device backend

     Arguments:
     'id: string'
          the chardev's ID, must be unique
     'backend: ChardevBackend'
          backend type and parameters

     Returns: ChardevReturn.

     Since: 1.4

     Example:
          -> { "execute" : "chardev-add",
               "arguments" : { "id" : "foo",
                               "backend" : { "type" : "null", "data" : {} } } }
          <- { "return": {} }

          -> { "execute" : "chardev-add",
               "arguments" : { "id" : "bar",
                               "backend" : { "type" : "file",
                                             "data" : { "out" : "/tmp/bar.log" } } } }
          <- { "return": {} }

          -> { "execute" : "chardev-add",
               "arguments" : { "id" : "baz",
                               "backend" : { "type" : "pty", "data" : {} } } }
          <- { "return": { "pty" : "/dev/pty/42" } }

 -- Command: chardev-change

     Change a character device backend

     Arguments:
     'id: string'
          the chardev's ID, must exist
     'backend: ChardevBackend'
          new backend type and parameters

     Returns: ChardevReturn.

     Since: 2.10

     Example:
          -> { "execute" : "chardev-change",
               "arguments" : { "id" : "baz",
                               "backend" : { "type" : "pty", "data" : {} } } }
          <- { "return": { "pty" : "/dev/pty/42" } }

          -> {"execute" : "chardev-change",
              "arguments" : {
                  "id" : "charchannel2",
                  "backend" : {
                      "type" : "socket",
                      "data" : {
                          "addr" : {
                              "type" : "unix" ,
                              "data" : {
                                  "path" : "/tmp/charchannel2.socket"
                              }
                           },
                           "server" : true,
                           "wait" : false }}}}
          <- {"return": {}}

 -- Command: chardev-remove

     Remove a character device backend

     Arguments:
     'id: string'
          the chardev's ID, must exist and not be in use

     Returns: Nothing on success

     Since: 1.4

     Example:
          -> { "execute": "chardev-remove", "arguments": { "id" : "foo" } }
          <- { "return": {} }

 -- Command: chardev-send-break

     Send a break to a character device

     Arguments:
     'id: string'
          the chardev's ID, must exist

     Returns: Nothing on success

     Since: 2.10

     Example:
          -> { "execute": "chardev-send-break", "arguments": { "id" : "foo" } }
          <- { "return": {} }

 -- Event: VSERPORT_CHANGE

     Emitted when the guest opens or closes a virtio-serial port.

     Arguments:
     'id: string'
          device identifier of the virtio-serial port
     'open: boolean'
          true if the guest has opened the virtio-serial port

     Since: 2.1

     Example:
          <- { "event": "VSERPORT_CHANGE",
               "data": { "id": "channel0", "open": true },
               "timestamp": { "seconds": 1401385907, "microseconds": 422329 } }

1.10 Dump guest memory
======================

 -- Enum: DumpGuestMemoryFormat

     An enumeration of guest-memory-dump's format.

     Values:
     'elf'
          elf format
     'kdump-zlib'
          kdump-compressed format with zlib-compressed
     'kdump-lzo'
          kdump-compressed format with lzo-compressed
     'kdump-snappy'
          kdump-compressed format with snappy-compressed
     'win-dmp'
          Windows full crashdump format, can be used instead of ELF
          converting (since 2.13)

     Since: 2.0

 -- Command: dump-guest-memory

     Dump guest's memory to vmcore.  It is a synchronous operation that
     can take very long depending on the amount of guest memory.

     Arguments:
     'paging: boolean'
          if true, do paging to get guest's memory mapping.  This allows
          using gdb to process the core file.

          IMPORTANT: this option can make QEMU allocate several
          gigabytes of RAM. This can happen for a large guest, or a
          malicious guest pretending to be large.

          Also, paging=true has the following limitations:

            1. The guest may be in a catastrophic state or can have
               corrupted memory, which cannot be trusted
            2. The guest can be in real-mode even if paging is enabled.
               For example, the guest uses ACPI to sleep, and ACPI sleep
               state goes in real-mode
            3. Currently only supported on i386 and x86_64.

     'protocol: string'
          the filename or file descriptor of the vmcore.  The supported
          protocols are:

            1. file: the protocol starts with "file:", and the following
               string is the file's path.
            2. fd: the protocol starts with "fd:", and the following
               string is the fd's name.

     'detach: boolean' (optional)
          if true, QMP will return immediately rather than waiting for
          the dump to finish.  The user can track progress using
          "query-dump".  (since 2.6).
     'begin: int' (optional)
          if specified, the starting physical address.
     'length: int' (optional)
          if specified, the memory size, in bytes.  If you don't want to
          dump all guest's memory, please specify the start 'begin' and
          'length'
     'format: DumpGuestMemoryFormat' (optional)
          if specified, the format of guest memory dump.  But non-elf
          format is conflict with paging and filter, ie.  'paging',
          'begin' and 'length' is not allowed to be specified with
          non-elf 'format' at the same time (since 2.0)

     Note: All boolean arguments default to false

     Returns: nothing on success

     Since: 1.2

     Example:
          -> { "execute": "dump-guest-memory",
               "arguments": { "protocol": "fd:dump" } }
          <- { "return": {} }

 -- Enum: DumpStatus

     Describe the status of a long-running background guest memory dump.

     Values:
     'none'
          no dump-guest-memory has started yet.
     'active'
          there is one dump running in background.
     'completed'
          the last dump has finished successfully.
     'failed'
          the last dump has failed.

     Since: 2.6

 -- Object: DumpQueryResult

     The result format for 'query-dump'.

     Members:
     'status: DumpStatus'
          enum of 'DumpStatus', which shows current dump status
     'completed: int'
          bytes written in latest dump (uncompressed)
     'total: int'
          total bytes to be written in latest dump (uncompressed)

     Since: 2.6

 -- Command: query-dump

     Query latest dump status.

     Returns: A 'DumpStatus' object showing the dump status.

     Since: 2.6

     Example:
          -> { "execute": "query-dump" }
          <- { "return": { "status": "active", "completed": 1024000,
                           "total": 2048000 } }

 -- Event: DUMP_COMPLETED

     Emitted when background dump has completed

     Arguments:
     'result: DumpQueryResult'
          final dump status
     'error: string' (optional)
          human-readable error string that provides hint on why dump
          failed.  Only presents on failure.  The user should not try to
          interpret the error string.

     Since: 2.6

     Example:
          { "event": "DUMP_COMPLETED",
            "data": {"result": {"total": 1090650112, "status": "completed",
                                "completed": 1090650112} } }

 -- Object: DumpGuestMemoryCapability

     A list of the available formats for dump-guest-memory

     Members:
     'formats: array of DumpGuestMemoryFormat'
          Not documented

     Since: 2.0

 -- Command: query-dump-guest-memory-capability

     Returns the available formats for dump-guest-memory

     Returns: A 'DumpGuestMemoryCapability' object listing available
     formats for dump-guest-memory

     Since: 2.0

     Example:
          -> { "execute": "query-dump-guest-memory-capability" }
          <- { "return": { "formats":
                           ["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }

1.11 Net devices
================

 -- Command: set_link

     Sets the link status of a virtual network adapter.

     Arguments:
     'name: string'
          the device name of the virtual network adapter
     'up: boolean'
          true to set the link status to be up

     Returns: Nothing on success If 'name' is not a valid network
     device, DeviceNotFound

     Since: 0.14.0

     Notes: Not all network adapters support setting link status.  This
     command will succeed even if the network adapter does not support
     link status notification.

     Example:
          -> { "execute": "set_link",
               "arguments": { "name": "e1000.0", "up": false } }
          <- { "return": {} }

 -- Command: netdev_add

     Add a network backend.

     Arguments:
     'type: string'
          the type of network backend.  Possible values are listed in
          NetClientDriver (excluding 'none' and 'nic')
     'id: string'
          the name of the new network backend
     Additional arguments depend on the type.

     TODO: This command effectively bypasses QAPI completely due to its
     "additional arguments" business.  It shouldn't have been added to
     the schema in this form.  It should be qapified properly, or
     replaced by a properly qapified command.

     Since: 0.14.0

     Returns: Nothing on success If 'type' is not a valid network
     backend, DeviceNotFound

     Example:
          -> { "execute": "netdev_add",
               "arguments": { "type": "user", "id": "netdev1",
                              "dnssearch": "example.org" } }
          <- { "return": {} }

 -- Command: netdev_del

     Remove a network backend.

     Arguments:
     'id: string'
          the name of the network backend to remove

     Returns: Nothing on success If 'id' is not a valid network backend,
     DeviceNotFound

     Since: 0.14.0

     Example:
          -> { "execute": "netdev_del", "arguments": { "id": "netdev1" } }
          <- { "return": {} }

 -- Object: NetLegacyNicOptions

     Create a new Network Interface Card.

     Members:
     'netdev: string' (optional)
          id of -netdev to connect to
     'macaddr: string' (optional)
          MAC address
     'model: string' (optional)
          device model (e1000, rtl8139, virtio etc.)
     'addr: string' (optional)
          PCI device address
     'vectors: int' (optional)
          number of MSI-x vectors, 0 to disable MSI-X

     Since: 1.2

 -- Object: NetdevUserOptions

     Use the user mode network stack which requires no administrator
     privilege to run.

     Members:
     'hostname: string' (optional)
          client hostname reported by the builtin DHCP server
     'restrict: boolean' (optional)
          isolate the guest from the host
     'ipv4: boolean' (optional)
          whether to support IPv4, default true for enabled (since 2.6)
     'ipv6: boolean' (optional)
          whether to support IPv6, default true for enabled (since 2.6)
     'ip: string' (optional)
          legacy parameter, use net= instead
     'net: string' (optional)
          IP network address that the guest will see, in the form
          addr[/netmask] The netmask is optional, and can be either in
          the form a.b.c.d or as a number of valid top-most bits.
          Default is 10.0.2.0/24.
     'host: string' (optional)
          guest-visible address of the host
     'tftp: string' (optional)
          root directory of the built-in TFTP server
     'bootfile: string' (optional)
          BOOTP filename, for use with tftp=
     'dhcpstart: string' (optional)
          the first of the 16 IPs the built-in DHCP server can assign
     'dns: string' (optional)
          guest-visible address of the virtual nameserver
     'dnssearch: array of String' (optional)
          list of DNS suffixes to search, passed as DHCP option to the
          guest
     'domainname: string' (optional)
          guest-visible domain name of the virtual nameserver (since
          3.0)
     'ipv6-prefix: string' (optional)
          IPv6 network prefix (default is fec0::) (since 2.6).  The
          network prefix is given in the usual hexadecimal IPv6 address
          notation.
     'ipv6-prefixlen: int' (optional)
          IPv6 network prefix length (default is 64) (since 2.6)
     'ipv6-host: string' (optional)
          guest-visible IPv6 address of the host (since 2.6)
     'ipv6-dns: string' (optional)
          guest-visible IPv6 address of the virtual nameserver (since
          2.6)
     'smb: string' (optional)
          root directory of the built-in SMB server
     'smbserver: string' (optional)
          IP address of the built-in SMB server
     'hostfwd: array of String' (optional)
          redirect incoming TCP or UDP host connections to guest
          endpoints
     'guestfwd: array of String' (optional)
          forward guest TCP connections
     'tftp-server-name: string' (optional)
          RFC2132 "TFTP server name" string (Since 3.1)

     Since: 1.2

 -- Object: NetdevTapOptions

     Used to configure a host TAP network interface backend.

     Members:
     'ifname: string' (optional)
          interface name
     'fd: string' (optional)
          file descriptor of an already opened tap
     'fds: string' (optional)
          multiple file descriptors of already opened multiqueue capable
          tap
     'script: string' (optional)
          script to initialize the interface
     'downscript: string' (optional)
          script to shut down the interface
     'br: string' (optional)
          bridge name (since 2.8)
     'helper: string' (optional)
          command to execute to configure bridge
     'sndbuf: int' (optional)
          send buffer limit.  Understands [TGMKkb] suffixes.
     'vnet_hdr: boolean' (optional)
          enable the IFF_VNET_HDR flag on the tap interface
     'vhost: boolean' (optional)
          enable vhost-net network accelerator
     'vhostfd: string' (optional)
          file descriptor of an already opened vhost net device
     'vhostfds: string' (optional)
          file descriptors of multiple already opened vhost net devices
     'vhostforce: boolean' (optional)
          vhost on for non-MSIX virtio guests
     'queues: int' (optional)
          number of queues to be created for multiqueue capable tap
     'poll-us: int' (optional)
          maximum number of microseconds that could be spent on busy
          polling for tap (since 2.7)

     Since: 1.2

 -- Object: NetdevSocketOptions

     Socket netdevs are used to establish a network connection to
     another QEMU virtual machine via a TCP socket.

     Members:
     'fd: string' (optional)
          file descriptor of an already opened socket
     'listen: string' (optional)
          port number, and optional hostname, to listen on
     'connect: string' (optional)
          port number, and optional hostname, to connect to
     'mcast: string' (optional)
          UDP multicast address and port number
     'localaddr: string' (optional)
          source address and port for multicast and udp packets
     'udp: string' (optional)
          UDP unicast address and port number

     Since: 1.2

 -- Object: NetdevL2TPv3Options

     Configure an Ethernet over L2TPv3 tunnel.

     Members:
     'src: string'
          source address
     'dst: string'
          destination address
     'srcport: string' (optional)
          source port - mandatory for udp, optional for ip
     'dstport: string' (optional)
          destination port - mandatory for udp, optional for ip
     'ipv6: boolean' (optional)
          force the use of ipv6
     'udp: boolean' (optional)
          use the udp version of l2tpv3 encapsulation
     'cookie64: boolean' (optional)
          use 64 bit coookies
     'counter: boolean' (optional)
          have sequence counter
     'pincounter: boolean' (optional)
          pin sequence counter to zero - workaround for buggy
          implementations or networks with packet reorder
     'txcookie: int' (optional)
          32 or 64 bit transmit cookie
     'rxcookie: int' (optional)
          32 or 64 bit receive cookie
     'txsession: int'
          32 bit transmit session
     'rxsession: int' (optional)
          32 bit receive session - if not specified set to the same
          value as transmit
     'offset: int' (optional)
          additional offset - allows the insertion of additional
          application-specific data before the packet payload

     Since: 2.1

 -- Object: NetdevVdeOptions

     Connect to a vde switch running on the host.

     Members:
     'sock: string' (optional)
          socket path
     'port: int' (optional)
          port number
     'group: string' (optional)
          group owner of socket
     'mode: int' (optional)
          permissions for socket

     Since: 1.2

 -- Object: NetdevBridgeOptions

     Connect a host TAP network interface to a host bridge device.

     Members:
     'br: string' (optional)
          bridge name
     'helper: string' (optional)
          command to execute to configure bridge

     Since: 1.2

 -- Object: NetdevHubPortOptions

     Connect two or more net clients through a software hub.

     Members:
     'hubid: int'
          hub identifier number
     'netdev: string' (optional)
          used to connect hub to a netdev instead of a device (since
          2.12)

     Since: 1.2

 -- Object: NetdevNetmapOptions

     Connect a client to a netmap-enabled NIC or to a VALE switch port

     Members:
     'ifname: string'
          Either the name of an existing network interface supported by
          netmap, or the name of a VALE port (created on the fly).  A
          VALE port name is in the form 'valeXXX:YYY', where XXX and YYY
          are non-negative integers.  XXX identifies a switch and YYY
          identifies a port of the switch.  VALE ports having the same
          XXX are therefore connected to the same switch.
     'devname: string' (optional)
          path of the netmap device (default: '/dev/netmap').

     Since: 2.0

 -- Object: NetdevVhostUserOptions

     Vhost-user network backend

     Members:
     'chardev: string'
          name of a unix socket chardev
     'vhostforce: boolean' (optional)
          vhost on for non-MSIX virtio guests (default: false).
     'queues: int' (optional)
          number of queues to be created for multiqueue vhost-user
          (default: 1) (Since 2.5)

     Since: 2.1

 -- Enum: NetClientDriver

     Available netdev drivers.

     Values:
     'none'
          Not documented
     'nic'
          Not documented
     'user'
          Not documented
     'tap'
          Not documented
     'l2tpv3'
          Not documented
     'socket'
          Not documented
     'vde'
          Not documented
     'bridge'
          Not documented
     'hubport'
          Not documented
     'netmap'
          Not documented
     'vhost-user'
          Not documented

     Since: 2.7

     'dump': dropped in 2.12

 -- Object: Netdev

     Captures the configuration of a network device.

     Members:
     'id: string'
          identifier for monitor commands.
     'type: NetClientDriver'
          Specify the driver used for interpreting remaining arguments.
     The members of 'NetLegacyNicOptions' when 'type' is "nic"
     The members of 'NetdevUserOptions' when 'type' is "user"
     The members of 'NetdevTapOptions' when 'type' is "tap"
     The members of 'NetdevL2TPv3Options' when 'type' is "l2tpv3"
     The members of 'NetdevSocketOptions' when 'type' is "socket"
     The members of 'NetdevVdeOptions' when 'type' is "vde"
     The members of 'NetdevBridgeOptions' when 'type' is "bridge"
     The members of 'NetdevHubPortOptions' when 'type' is "hubport"
     The members of 'NetdevNetmapOptions' when 'type' is "netmap"
     The members of 'NetdevVhostUserOptions' when 'type' is "vhost-user"

     Since: 1.2

     'l2tpv3' - since 2.1

 -- Object: NetLegacy

     Captures the configuration of a network device; legacy.

     Members:
     'id: string' (optional)
          identifier for monitor commands
     'name: string' (optional)
          identifier for monitor commands, ignored if 'id' is present
     'opts: NetLegacyOptions'
          device type specific properties (legacy)

     Since: 1.2

     'vlan': dropped in 3.0

 -- Enum: NetLegacyOptionsType

     Values:
     'none'
          Not documented
     'nic'
          Not documented
     'user'
          Not documented
     'tap'
          Not documented
     'l2tpv3'
          Not documented
     'socket'
          Not documented
     'vde'
          Not documented
     'bridge'
          Not documented
     'netmap'
          Not documented
     'vhost-user'
          Not documented

     Since: 1.2

 -- Object: NetLegacyOptions

     Like Netdev, but for use only by the legacy command line options

     Members:
     'type: NetLegacyOptionsType'
          Not documented
     The members of 'NetLegacyNicOptions' when 'type' is "nic"
     The members of 'NetdevUserOptions' when 'type' is "user"
     The members of 'NetdevTapOptions' when 'type' is "tap"
     The members of 'NetdevL2TPv3Options' when 'type' is "l2tpv3"
     The members of 'NetdevSocketOptions' when 'type' is "socket"
     The members of 'NetdevVdeOptions' when 'type' is "vde"
     The members of 'NetdevBridgeOptions' when 'type' is "bridge"
     The members of 'NetdevNetmapOptions' when 'type' is "netmap"
     The members of 'NetdevVhostUserOptions' when 'type' is "vhost-user"

     Since: 1.2

 -- Enum: NetFilterDirection

     Indicates whether a netfilter is attached to a netdev's transmit
     queue or receive queue or both.

     Values:
     'all'
          the filter is attached both to the receive and the transmit
          queue of the netdev (default).
     'rx'
          the filter is attached to the receive queue of the netdev,
          where it will receive packets sent to the netdev.
     'tx'
          the filter is attached to the transmit queue of the netdev,
          where it will receive packets sent by the netdev.

     Since: 2.5

 -- Enum: RxState

     Packets receiving state

     Values:
     'normal'
          filter assigned packets according to the mac-table
     'none'
          don't receive any assigned packet
     'all'
          receive all assigned packets

     Since: 1.6

 -- Object: RxFilterInfo

     Rx-filter information for a NIC.

     Members:
     'name: string'
          net client name
     'promiscuous: boolean'
          whether promiscuous mode is enabled
     'multicast: RxState'
          multicast receive state
     'unicast: RxState'
          unicast receive state
     'vlan: RxState'
          vlan receive state (Since 2.0)
     'broadcast-allowed: boolean'
          whether to receive broadcast
     'multicast-overflow: boolean'
          multicast table is overflowed or not
     'unicast-overflow: boolean'
          unicast table is overflowed or not
     'main-mac: string'
          the main macaddr string
     'vlan-table: array of int'
          a list of active vlan id
     'unicast-table: array of string'
          a list of unicast macaddr string
     'multicast-table: array of string'
          a list of multicast macaddr string

     Since: 1.6

 -- Command: query-rx-filter

     Return rx-filter information for all NICs (or for the given NIC).

     Arguments:
     'name: string' (optional)
          net client name

     Returns: list of 'RxFilterInfo' for all NICs (or for the given
     NIC). Returns an error if the given 'name' doesn't exist, or given
     NIC doesn't support rx-filter querying, or given net client isn't a
     NIC.

     Since: 1.6

     Example:
          -> { "execute": "query-rx-filter", "arguments": { "name": "vnet0" } }
          <- { "return": [
                  {
                      "promiscuous": true,
                      "name": "vnet0",
                      "main-mac": "52:54:00:12:34:56",
                      "unicast": "normal",
                      "vlan": "normal",
                      "vlan-table": [
                          4,
                          0
                      ],
                      "unicast-table": [
                      ],
                      "multicast": "normal",
                      "multicast-overflow": false,
                      "unicast-overflow": false,
                      "multicast-table": [
                          "01:00:5e:00:00:01",
                          "33:33:00:00:00:01",
                          "33:33:ff:12:34:56"
                      ],
                      "broadcast-allowed": false
                  }
                ]
             }

 -- Event: NIC_RX_FILTER_CHANGED

     Emitted once until the 'query-rx-filter' command is executed, the
     first event will always be emitted

     Arguments:
     'name: string' (optional)
          net client name
     'path: string'
          device path

     Since: 1.6

     Example:
          <- { "event": "NIC_RX_FILTER_CHANGED",
               "data": { "name": "vnet0",
                         "path": "/machine/peripheral/vnet0/virtio-backend" },
               "timestamp": { "seconds": 1368697518, "microseconds": 326866 } }
             }

 -- Object: AnnounceParameters

     Parameters for self-announce timers

     Members:
     'initial: int'
          Initial delay (in ms) before sending the first GARP/RARP
          announcement
     'max: int'
          Maximum delay (in ms) between GARP/RARP announcement packets
     'rounds: int'
          Number of self-announcement attempts
     'step: int'
          Delay increase (in ms) after each self-announcement attempt
     'interfaces: array of string' (optional)
          An optional list of interface names, which restricts the
          announcement to the listed interfaces.  (Since 4.1)
     'id: string' (optional)
          A name to be used to identify an instance of announce-timers
          and to allow it to modified later.  Not for use as part of the
          migration parameters.  (Since 4.1)

     Since: 4.0

 -- Command: announce-self

     Trigger generation of broadcast RARP frames to update network
     switches.  This can be useful when network bonds fail-over the
     active slave.

     Arguments: the members of 'AnnounceParameters'

     Example:
          -> { "execute": "announce-self",
               "arguments": {
                   "initial": 50, "max": 550, "rounds": 10, "step": 50,
                   "interfaces": ["vn2", "vn3"], "id": "bob" } }
          <- { "return": {} }

     Since: 4.0

 -- Event: FAILOVER_NEGOTIATED

     Emitted when VIRTIO_NET_F_STANDBY was enabled during feature
     negotiation.  Failover primary devices which were hidden (not
     hotplugged when requested) before will now be hotplugged by the
     virtio-net standby device.

     device-id: QEMU device id of the unplugged device

     Arguments:
     'device-id: string'
          Not documented

     Since: 4.2

     Example:
          <- { "event": "FAILOVER_NEGOTIATED",
               "data": "net1" }

1.12 RDMA device
================

 -- Event: RDMA_GID_STATUS_CHANGED

     Emitted when guest driver adds/deletes GID to/from device

     Arguments:
     'netdev: string'
          RoCE Network Device name
     'gid-status: boolean'
          Add or delete indication
     'subnet-prefix: int'
          Subnet Prefix
     'interface-id: int'
          Not documented
     'interface-id' : Interface ID

     Since: 4.0

     Example:
          <- {"timestamp": {"seconds": 1541579657, "microseconds": 986760},
              "event": "RDMA_GID_STATUS_CHANGED",
              "data":
                  {"netdev": "bridge0",
                  "interface-id": 15880512517475447892,
                  "gid-status": true,
                  "subnet-prefix": 33022}}

1.13 Rocker switch device
=========================

 -- Object: RockerSwitch

     Rocker switch information.

     Members:
     'name: string'
          switch name
     'id: int'
          switch ID
     'ports: int'
          number of front-panel ports

     Since: 2.4

 -- Command: query-rocker

     Return rocker switch information.

     Arguments:
     'name: string'
          Not documented

     Returns: 'Rocker' information

     Since: 2.4

     Example:
          -> { "execute": "query-rocker", "arguments": { "name": "sw1" } }
          <- { "return": {"name": "sw1", "ports": 2, "id": 1327446905938}}

 -- Enum: RockerPortDuplex

     An eumeration of port duplex states.

     Values:
     'half'
          half duplex
     'full'
          full duplex

     Since: 2.4

 -- Enum: RockerPortAutoneg

     An eumeration of port autoneg states.

     Values:
     'off'
          autoneg is off
     'on'
          autoneg is on

     Since: 2.4

 -- Object: RockerPort

     Rocker switch port information.

     Members:
     'name: string'
          port name
     'enabled: boolean'
          port is enabled for I/O
     'link-up: boolean'
          physical link is UP on port
     'speed: int'
          port link speed in Mbps
     'duplex: RockerPortDuplex'
          port link duplex
     'autoneg: RockerPortAutoneg'
          port link autoneg

     Since: 2.4

 -- Command: query-rocker-ports

     Return rocker switch port information.

     Arguments:
     'name: string'
          Not documented

     Returns: a list of 'RockerPort' information

     Since: 2.4

     Example:
          -> { "execute": "query-rocker-ports", "arguments": { "name": "sw1" } }
          <- { "return": [ {"duplex": "full", "enabled": true, "name": "sw1.1",
                            "autoneg": "off", "link-up": true, "speed": 10000},
                           {"duplex": "full", "enabled": true, "name": "sw1.2",
                            "autoneg": "off", "link-up": true, "speed": 10000}
             ]}

 -- Object: RockerOfDpaFlowKey

     Rocker switch OF-DPA flow key

     Members:
     'priority: int'
          key priority, 0 being lowest priority
     'tbl-id: int'
          flow table ID
     'in-pport: int' (optional)
          physical input port
     'tunnel-id: int' (optional)
          tunnel ID
     'vlan-id: int' (optional)
          VLAN ID
     'eth-type: int' (optional)
          Ethernet header type
     'eth-src: string' (optional)
          Ethernet header source MAC address
     'eth-dst: string' (optional)
          Ethernet header destination MAC address
     'ip-proto: int' (optional)
          IP Header protocol field
     'ip-tos: int' (optional)
          IP header TOS field
     'ip-dst: string' (optional)
          IP header destination address

     Note: optional members may or may not appear in the flow key
     depending if they're relevant to the flow key.

     Since: 2.4

 -- Object: RockerOfDpaFlowMask

     Rocker switch OF-DPA flow mask

     Members:
     'in-pport: int' (optional)
          physical input port
     'tunnel-id: int' (optional)
          tunnel ID
     'vlan-id: int' (optional)
          VLAN ID
     'eth-src: string' (optional)
          Ethernet header source MAC address
     'eth-dst: string' (optional)
          Ethernet header destination MAC address
     'ip-proto: int' (optional)
          IP Header protocol field
     'ip-tos: int' (optional)
          IP header TOS field

     Note: optional members may or may not appear in the flow mask
     depending if they're relevant to the flow mask.

     Since: 2.4

 -- Object: RockerOfDpaFlowAction

     Rocker switch OF-DPA flow action

     Members:
     'goto-tbl: int' (optional)
          next table ID
     'group-id: int' (optional)
          group ID
     'tunnel-lport: int' (optional)
          tunnel logical port ID
     'vlan-id: int' (optional)
          VLAN ID
     'new-vlan-id: int' (optional)
          new VLAN ID
     'out-pport: int' (optional)
          physical output port

     Note: optional members may or may not appear in the flow action
     depending if they're relevant to the flow action.

     Since: 2.4

 -- Object: RockerOfDpaFlow

     Rocker switch OF-DPA flow

     Members:
     'cookie: int'
          flow unique cookie ID
     'hits: int'
          count of matches (hits) on flow
     'key: RockerOfDpaFlowKey'
          flow key
     'mask: RockerOfDpaFlowMask'
          flow mask
     'action: RockerOfDpaFlowAction'
          flow action

     Since: 2.4

 -- Command: query-rocker-of-dpa-flows

     Return rocker OF-DPA flow information.

     Arguments:
     'name: string'
          switch name
     'tbl-id: int' (optional)
          flow table ID. If tbl-id is not specified, returns flow
          information for all tables.

     Returns: rocker OF-DPA flow information

     Since: 2.4

     Example:
          -> { "execute": "query-rocker-of-dpa-flows",
               "arguments": { "name": "sw1" } }
          <- { "return": [ {"key": {"in-pport": 0, "priority": 1, "tbl-id": 0},
                            "hits": 138,
                            "cookie": 0,
                            "action": {"goto-tbl": 10},
                            "mask": {"in-pport": 4294901760}
                           },
                           {...more...},
             ]}

 -- Object: RockerOfDpaGroup

     Rocker switch OF-DPA group

     Members:
     'id: int'
          group unique ID
     'type: int'
          group type
     'vlan-id: int' (optional)
          VLAN ID
     'pport: int' (optional)
          physical port number
     'index: int' (optional)
          group index, unique with group type
     'out-pport: int' (optional)
          output physical port number
     'group-id: int' (optional)
          next group ID
     'set-vlan-id: int' (optional)
          VLAN ID to set
     'pop-vlan: int' (optional)
          pop VLAN headr from packet
     'group-ids: array of int' (optional)
          list of next group IDs
     'set-eth-src: string' (optional)
          set source MAC address in Ethernet header
     'set-eth-dst: string' (optional)
          set destination MAC address in Ethernet header
     'ttl-check: int' (optional)
          perform TTL check

     Note: optional members may or may not appear in the group depending
     if they're relevant to the group type.

     Since: 2.4

 -- Command: query-rocker-of-dpa-groups

     Return rocker OF-DPA group information.

     Arguments:
     'name: string'
          switch name
     'type: int' (optional)
          group type.  If type is not specified, returns group
          information for all group types.

     Returns: rocker OF-DPA group information

     Since: 2.4

     Example:
          -> { "execute": "query-rocker-of-dpa-groups",
               "arguments": { "name": "sw1" } }
          <- { "return": [ {"type": 0, "out-pport": 2,
                            "pport": 2, "vlan-id": 3841,
                            "pop-vlan": 1, "id": 251723778},
                           {"type": 0, "out-pport": 0,
                            "pport": 0, "vlan-id": 3841,
                            "pop-vlan": 1, "id": 251723776},
                           {"type": 0, "out-pport": 1,
                            "pport": 1, "vlan-id": 3840,
                            "pop-vlan": 1, "id": 251658241},
                           {"type": 0, "out-pport": 0,
                            "pport": 0, "vlan-id": 3840,
                            "pop-vlan": 1, "id": 251658240}
             ]}

1.14 TPM (trusted platform module) devices
==========================================

 -- Enum: TpmModel

     An enumeration of TPM models

     Values:
     'tpm-tis'
          TPM TIS model
     'tpm-crb'
          TPM CRB model (since 2.12)

     Since: 1.5

 -- Command: query-tpm-models

     Return a list of supported TPM models

     Returns: a list of TpmModel

     Since: 1.5

     Example:
          -> { "execute": "query-tpm-models" }
          <- { "return": [ "tpm-tis", "tpm-crb" ] }

 -- Enum: TpmType

     An enumeration of TPM types

     Values:
     'passthrough'
          TPM passthrough type
     'emulator'
          Software Emulator TPM type Since: 2.11

     Since: 1.5

 -- Command: query-tpm-types

     Return a list of supported TPM types

     Returns: a list of TpmType

     Since: 1.5

     Example:
          -> { "execute": "query-tpm-types" }
          <- { "return": [ "passthrough", "emulator" ] }

 -- Object: TPMPassthroughOptions

     Information about the TPM passthrough type

     Members:
     'path: string' (optional)
          string describing the path used for accessing the TPM device
     'cancel-path: string' (optional)
          string showing the TPM's sysfs cancel file for cancellation of
          TPM commands while they are executing

     Since: 1.5

 -- Object: TPMEmulatorOptions

     Information about the TPM emulator type

     Members:
     'chardev: string'
          Name of a unix socket chardev

     Since: 2.11

 -- Object: TpmTypeOptions

     A union referencing different TPM backend types' configuration
     options

     Members:
     'type'
          'passthrough' The configuration options for the TPM
          passthrough type 'emulator' The configuration options for TPM
          emulator backend type
     'data: TPMPassthroughOptions' when 'type' is "passthrough"
     'data: TPMEmulatorOptions' when 'type' is "emulator"

     Since: 1.5

 -- Object: TPMInfo

     Information about the TPM

     Members:
     'id: string'
          The Id of the TPM
     'model: TpmModel'
          The TPM frontend model
     'options: TpmTypeOptions'
          The TPM (backend) type configuration options

     Since: 1.5

 -- Command: query-tpm

     Return information about the TPM device

     Returns: 'TPMInfo' on success

     Since: 1.5

     Example:
          -> { "execute": "query-tpm" }
          <- { "return":
               [
                 { "model": "tpm-tis",
                   "options":
                     { "type": "passthrough",
                       "data":
                         { "cancel-path": "/sys/class/misc/tpm0/device/cancel",
                           "path": "/dev/tpm0"
                         }
                     },
                   "id": "tpm0"
                 }
               ]
             }

1.15 Remote desktop
===================

 -- Command: set_password

     Sets the password of a remote display session.

     Arguments:
     'protocol: string'
          'vnc' to modify the VNC server password 'spice' to modify the
          Spice server password
     'password: string'
          the new password
     'connected: string' (optional)
          how to handle existing clients when changing the password.  If
          nothing is specified, defaults to 'keep' 'fail' to fail the
          command if clients are connected 'disconnect' to disconnect
          existing clients 'keep' to maintain existing clients

     Returns: Nothing on success If Spice is not enabled, DeviceNotFound

     Since: 0.14.0

     Example:
          -> { "execute": "set_password", "arguments": { "protocol": "vnc",
                                                         "password": "secret" } }
          <- { "return": {} }

 -- Command: expire_password

     Expire the password of a remote display server.

     Arguments:
     'protocol: string'
          the name of the remote display protocol 'vnc' or 'spice'
     'time: string'
          when to expire the password.  'now' to expire the password
          immediately 'never' to cancel password expiration '+INT' where
          INT is the number of seconds from now (integer) 'INT' where
          INT is the absolute time in seconds

     Returns: Nothing on success If 'protocol' is 'spice' and Spice is
     not active, DeviceNotFound

     Since: 0.14.0

     Notes: Time is relative to the server and currently there is no way
     to coordinate server time with client time.  It is not recommended
     to use the absolute time version of the 'time' parameter unless
     you're sure you are on the same machine as the QEMU instance.

     Example:
          -> { "execute": "expire_password", "arguments": { "protocol": "vnc",
                                                            "time": "+60" } }
          <- { "return": {} }

 -- Command: screendump

     Write a PPM of the VGA screen to a file.

     Arguments:
     'filename: string'
          the path of a new PPM file to store the image
     'device: string' (optional)
          ID of the display device that should be dumped.  If this
          parameter is missing, the primary display will be used.
          (Since 2.12)
     'head: int' (optional)
          head to use in case the device supports multiple heads.  If
          this parameter is missing, head #0 will be used.  Also note
          that the head can only be specified in conjunction with the
          device ID. (Since 2.12)

     Returns: Nothing on success

     Since: 0.14.0

     Example:
          -> { "execute": "screendump",
               "arguments": { "filename": "/tmp/image" } }
          <- { "return": {} }

1.15.1 Spice
------------

 -- Object: SpiceBasicInfo

     The basic information for SPICE network connection

     Members:
     'host: string'
          IP address
     'port: string'
          port number
     'family: NetworkAddressFamily'
          address family

     Since: 2.1

     If: 'defined(CONFIG_SPICE)'

 -- Object: SpiceServerInfo

     Information about a SPICE server

     Members:
     'auth: string' (optional)
          authentication method
     The members of 'SpiceBasicInfo'

     Since: 2.1

     If: 'defined(CONFIG_SPICE)'

 -- Object: SpiceChannel

     Information about a SPICE client channel.

     Members:
     'connection-id: int'
          SPICE connection id number.  All channels with the same id
          belong to the same SPICE session.
     'channel-type: int'
          SPICE channel type number.  "1" is the main control channel,
          filter for this one if you want to track spice sessions only
     'channel-id: int'
          SPICE channel ID number.  Usually "0", might be different when
          multiple channels of the same type exist, such as multiple
          display channels in a multihead setup
     'tls: boolean'
          true if the channel is encrypted, false otherwise.
     The members of 'SpiceBasicInfo'

     Since: 0.14.0

     If: 'defined(CONFIG_SPICE)'

 -- Enum: SpiceQueryMouseMode

     An enumeration of Spice mouse states.

     Values:
     'client'
          Mouse cursor position is determined by the client.
     'server'
          Mouse cursor position is determined by the server.
     'unknown'
          No information is available about mouse mode used by the spice
          server.

     Note: spice/enums.h has a SpiceMouseMode already, hence the name.

     Since: 1.1

     If: 'defined(CONFIG_SPICE)'

 -- Object: SpiceInfo

     Information about the SPICE session.

     Members:
     'enabled: boolean'
          true if the SPICE server is enabled, false otherwise
     'migrated: boolean'
          true if the last guest migration completed and spice migration
          had completed as well.  false otherwise.  (since 1.4)
     'host: string' (optional)
          The hostname the SPICE server is bound to.  This depends on
          the name resolution on the host and may be an IP address.
     'port: int' (optional)
          The SPICE server's port number.
     'compiled-version: string' (optional)
          SPICE server version.
     'tls-port: int' (optional)
          The SPICE server's TLS port number.
     'auth: string' (optional)
          the current authentication type used by the server 'none' if
          no authentication is being used 'spice' uses SASL or direct
          TLS authentication, depending on command line options
     'mouse-mode: SpiceQueryMouseMode'
          The mode in which the mouse cursor is displayed currently.
          Can be determined by the client or the server, or unknown if
          spice server doesn't provide this information.  (since: 1.1)
     'channels: array of SpiceChannel' (optional)
          a list of 'SpiceChannel' for each active spice channel

     Since: 0.14.0

     If: 'defined(CONFIG_SPICE)'

 -- Command: query-spice

     Returns information about the current SPICE server

     Returns: 'SpiceInfo'

     Since: 0.14.0

     Example:
          -> { "execute": "query-spice" }
          <- { "return": {
                   "enabled": true,
                   "auth": "spice",
                   "port": 5920,
                   "tls-port": 5921,
                   "host": "0.0.0.0",
                   "channels": [
                      {
                         "port": "54924",
                         "family": "ipv4",
                         "channel-type": 1,
                         "connection-id": 1804289383,
                         "host": "127.0.0.1",
                         "channel-id": 0,
                         "tls": true
                      },
                      {
                         "port": "36710",
                         "family": "ipv4",
                         "channel-type": 4,
                         "connection-id": 1804289383,
                         "host": "127.0.0.1",
                         "channel-id": 0,
                         "tls": false
                      },
                      [ ... more channels follow ... ]
                   ]
                }
             }

     If: 'defined(CONFIG_SPICE)'

 -- Event: SPICE_CONNECTED

     Emitted when a SPICE client establishes a connection

     Arguments:
     'server: SpiceBasicInfo'
          server information
     'client: SpiceBasicInfo'
          client information

     Since: 0.14.0

     Example:
          <- { "timestamp": {"seconds": 1290688046, "microseconds": 388707},
               "event": "SPICE_CONNECTED",
               "data": {
                 "server": { "port": "5920", "family": "ipv4", "host": "127.0.0.1"},
                 "client": {"port": "52873", "family": "ipv4", "host": "127.0.0.1"}
             }}

     If: 'defined(CONFIG_SPICE)'

 -- Event: SPICE_INITIALIZED

     Emitted after initial handshake and authentication takes place (if
     any) and the SPICE channel is up and running

     Arguments:
     'server: SpiceServerInfo'
          server information
     'client: SpiceChannel'
          client information

     Since: 0.14.0

     Example:
          <- { "timestamp": {"seconds": 1290688046, "microseconds": 417172},
               "event": "SPICE_INITIALIZED",
               "data": {"server": {"auth": "spice", "port": "5921",
                                   "family": "ipv4", "host": "127.0.0.1"},
                        "client": {"port": "49004", "family": "ipv4", "channel-type": 3,
                                   "connection-id": 1804289383, "host": "127.0.0.1",
                                   "channel-id": 0, "tls": true}
             }}

     If: 'defined(CONFIG_SPICE)'

 -- Event: SPICE_DISCONNECTED

     Emitted when the SPICE connection is closed

     Arguments:
     'server: SpiceBasicInfo'
          server information
     'client: SpiceBasicInfo'
          client information

     Since: 0.14.0

     Example:
          <- { "timestamp": {"seconds": 1290688046, "microseconds": 388707},
               "event": "SPICE_DISCONNECTED",
               "data": {
                 "server": { "port": "5920", "family": "ipv4", "host": "127.0.0.1"},
                 "client": {"port": "52873", "family": "ipv4", "host": "127.0.0.1"}
             }}

     If: 'defined(CONFIG_SPICE)'

 -- Event: SPICE_MIGRATE_COMPLETED

     Emitted when SPICE migration has completed

     Since: 1.3

     Example:
          <- { "timestamp": {"seconds": 1290688046, "microseconds": 417172},
               "event": "SPICE_MIGRATE_COMPLETED" }

     If: 'defined(CONFIG_SPICE)'

1.15.2 VNC
----------

 -- Object: VncBasicInfo

     The basic information for vnc network connection

     Members:
     'host: string'
          IP address
     'service: string'
          The service name of the vnc port.  This may depend on the host
          system's service database so symbolic names should not be
          relied on.
     'family: NetworkAddressFamily'
          address family
     'websocket: boolean'
          true in case the socket is a websocket (since 2.3).

     Since: 2.1

     If: 'defined(CONFIG_VNC)'

 -- Object: VncServerInfo

     The network connection information for server

     Members:
     'auth: string' (optional)
          authentication method used for the plain (non-websocket) VNC
          server
     The members of 'VncBasicInfo'

     Since: 2.1

     If: 'defined(CONFIG_VNC)'

 -- Object: VncClientInfo

     Information about a connected VNC client.

     Members:
     'x509_dname: string' (optional)
          If x509 authentication is in use, the Distinguished Name of
          the client.
     'sasl_username: string' (optional)
          If SASL authentication is in use, the SASL username used for
          authentication.
     The members of 'VncBasicInfo'

     Since: 0.14.0

     If: 'defined(CONFIG_VNC)'

 -- Object: VncInfo

     Information about the VNC session.

     Members:
     'enabled: boolean'
          true if the VNC server is enabled, false otherwise
     'host: string' (optional)
          The hostname the VNC server is bound to.  This depends on the
          name resolution on the host and may be an IP address.
     'family: NetworkAddressFamily' (optional)
          'ipv6' if the host is listening for IPv6 connections 'ipv4' if
          the host is listening for IPv4 connections 'unix' if the host
          is listening on a unix domain socket 'unknown' otherwise
     'service: string' (optional)
          The service name of the server's port.  This may depends on
          the host system's service database so symbolic names should
          not be relied on.
     'auth: string' (optional)
          the current authentication type used by the server 'none' if
          no authentication is being used 'vnc' if VNC authentication is
          being used 'vencrypt+plain' if VEncrypt is used with plain
          text authentication 'vencrypt+tls+none' if VEncrypt is used
          with TLS and no authentication 'vencrypt+tls+vnc' if VEncrypt
          is used with TLS and VNC authentication 'vencrypt+tls+plain'
          if VEncrypt is used with TLS and plain text auth
          'vencrypt+x509+none' if VEncrypt is used with x509 and no auth
          'vencrypt+x509+vnc' if VEncrypt is used with x509 and VNC auth
          'vencrypt+x509+plain' if VEncrypt is used with x509 and plain
          text auth 'vencrypt+tls+sasl' if VEncrypt is used with TLS and
          SASL auth 'vencrypt+x509+sasl' if VEncrypt is used with x509
          and SASL auth
     'clients: array of VncClientInfo' (optional)
          a list of 'VncClientInfo' of all currently connected clients

     Since: 0.14.0

     If: 'defined(CONFIG_VNC)'

 -- Enum: VncPrimaryAuth

     vnc primary authentication method.

     Values:
     'none'
          Not documented
     'vnc'
          Not documented
     'ra2'
          Not documented
     'ra2ne'
          Not documented
     'tight'
          Not documented
     'ultra'
          Not documented
     'tls'
          Not documented
     'vencrypt'
          Not documented
     'sasl'
          Not documented

     Since: 2.3

     If: 'defined(CONFIG_VNC)'

 -- Enum: VncVencryptSubAuth

     vnc sub authentication method with vencrypt.

     Values:
     'plain'
          Not documented
     'tls-none'
          Not documented
     'x509-none'
          Not documented
     'tls-vnc'
          Not documented
     'x509-vnc'
          Not documented
     'tls-plain'
          Not documented
     'x509-plain'
          Not documented
     'tls-sasl'
          Not documented
     'x509-sasl'
          Not documented

     Since: 2.3

     If: 'defined(CONFIG_VNC)'

 -- Object: VncServerInfo2

     The network connection information for server

     Members:
     'auth: VncPrimaryAuth'
          The current authentication type used by the servers
     'vencrypt: VncVencryptSubAuth' (optional)
          The vencrypt sub authentication type used by the servers, only
          specified in case auth == vencrypt.
     The members of 'VncBasicInfo'

     Since: 2.9

     If: 'defined(CONFIG_VNC)'

 -- Object: VncInfo2

     Information about a vnc server

     Members:
     'id: string'
          vnc server name.
     'server: array of VncServerInfo2'
          A list of 'VncBasincInfo' describing all listening sockets.
          The list can be empty (in case the vnc server is disabled).
          It also may have multiple entries: normal + websocket,
          possibly also ipv4 + ipv6 in the future.
     'clients: array of VncClientInfo'
          A list of 'VncClientInfo' of all currently connected clients.
          The list can be empty, for obvious reasons.
     'auth: VncPrimaryAuth'
          The current authentication type used by the non-websockets
          servers
     'vencrypt: VncVencryptSubAuth' (optional)
          The vencrypt authentication type used by the servers, only
          specified in case auth == vencrypt.
     'display: string' (optional)
          The display device the vnc server is linked to.

     Since: 2.3

     If: 'defined(CONFIG_VNC)'

 -- Command: query-vnc

     Returns information about the current VNC server

     Returns: 'VncInfo'

     Since: 0.14.0

     Example:
          -> { "execute": "query-vnc" }
          <- { "return": {
                   "enabled":true,
                   "host":"0.0.0.0",
                   "service":"50402",
                   "auth":"vnc",
                   "family":"ipv4",
                   "clients":[
                      {
                         "host":"127.0.0.1",
                         "service":"50401",
                         "family":"ipv4"
                      }
                   ]
                }
             }

     If: 'defined(CONFIG_VNC)'

 -- Command: query-vnc-servers

     Returns a list of vnc servers.  The list can be empty.

     Returns: a list of 'VncInfo2'

     Since: 2.3

     If: 'defined(CONFIG_VNC)'

 -- Command: change-vnc-password

     Change the VNC server password.

     Arguments:
     'password: string'
          the new password to use with VNC authentication

     Since: 1.1

     Notes: An empty password in this command will set the password to
     the empty string.  Existing clients are unaffected by executing
     this command.

     If: 'defined(CONFIG_VNC)'

 -- Event: VNC_CONNECTED

     Emitted when a VNC client establishes a connection

     Arguments:
     'server: VncServerInfo'
          server information
     'client: VncBasicInfo'
          client information

     Note: This event is emitted before any authentication takes place,
     thus the authentication ID is not provided

     Since: 0.13.0

     Example:
          <- { "event": "VNC_CONNECTED",
               "data": {
                     "server": { "auth": "sasl", "family": "ipv4",
                                 "service": "5901", "host": "0.0.0.0" },
                     "client": { "family": "ipv4", "service": "58425",
                                 "host": "127.0.0.1" } },
               "timestamp": { "seconds": 1262976601, "microseconds": 975795 } }

     If: 'defined(CONFIG_VNC)'

 -- Event: VNC_INITIALIZED

     Emitted after authentication takes place (if any) and the VNC
     session is made active

     Arguments:
     'server: VncServerInfo'
          server information
     'client: VncClientInfo'
          client information

     Since: 0.13.0

     Example:
          <-  { "event": "VNC_INITIALIZED",
                "data": {
                     "server": { "auth": "sasl", "family": "ipv4",
                                 "service": "5901", "host": "0.0.0.0"},
                     "client": { "family": "ipv4", "service": "46089",
                                 "host": "127.0.0.1", "sasl_username": "luiz" } },
                "timestamp": { "seconds": 1263475302, "microseconds": 150772 } }

     If: 'defined(CONFIG_VNC)'

 -- Event: VNC_DISCONNECTED

     Emitted when the connection is closed

     Arguments:
     'server: VncServerInfo'
          server information
     'client: VncClientInfo'
          client information

     Since: 0.13.0

     Example:
          <- { "event": "VNC_DISCONNECTED",
               "data": {
                     "server": { "auth": "sasl", "family": "ipv4",
                                 "service": "5901", "host": "0.0.0.0" },
                     "client": { "family": "ipv4", "service": "58425",
                                 "host": "127.0.0.1", "sasl_username": "luiz" } },
               "timestamp": { "seconds": 1262976601, "microseconds": 975795 } }

     If: 'defined(CONFIG_VNC)'

1.16 Input
==========

 -- Object: MouseInfo

     Information about a mouse device.

     Members:
     'name: string'
          the name of the mouse device
     'index: int'
          the index of the mouse device
     'current: boolean'
          true if this device is currently receiving mouse events
     'absolute: boolean'
          true if this device supports absolute coordinates as input

     Since: 0.14.0

 -- Command: query-mice

     Returns information about each active mouse device

     Returns: a list of 'MouseInfo' for each device

     Since: 0.14.0

     Example:
          -> { "execute": "query-mice" }
          <- { "return": [
                   {
                      "name":"QEMU Microsoft Mouse",
                      "index":0,
                      "current":false,
                      "absolute":false
                   },
                   {
                      "name":"QEMU PS/2 Mouse",
                      "index":1,
                      "current":true,
                      "absolute":true
                   }
                ]
             }

 -- Enum: QKeyCode

     An enumeration of key name.

     This is used by the 'send-key' command.

     Values:
     'unmapped'
          since 2.0
     'pause'
          since 2.0
     'ro'
          since 2.4
     'kp_comma'
          since 2.4
     'kp_equals'
          since 2.6
     'power'
          since 2.6
     'hiragana'
          since 2.9
     'henkan'
          since 2.9
     'yen'
          since 2.9
     'sleep'
          since 2.10
     'wake'
          since 2.10
     'audionext'
          since 2.10
     'audioprev'
          since 2.10
     'audiostop'
          since 2.10
     'audioplay'
          since 2.10
     'audiomute'
          since 2.10
     'volumeup'
          since 2.10
     'volumedown'
          since 2.10
     'mediaselect'
          since 2.10
     'mail'
          since 2.10
     'calculator'
          since 2.10
     'computer'
          since 2.10
     'ac_home'
          since 2.10
     'ac_back'
          since 2.10
     'ac_forward'
          since 2.10
     'ac_refresh'
          since 2.10
     'ac_bookmarks'
          since 2.10 altgr, altgr_r: dropped in 2.10
     'muhenkan'
          since 2.12
     'katakanahiragana'
          since 2.12
     'shift'
          Not documented
     'shift_r'
          Not documented
     'alt'
          Not documented
     'alt_r'
          Not documented
     'ctrl'
          Not documented
     'ctrl_r'
          Not documented
     'menu'
          Not documented
     'esc'
          Not documented
     '1'
          Not documented
     '2'
          Not documented
     '3'
          Not documented
     '4'
          Not documented
     '5'
          Not documented
     '6'
          Not documented
     '7'
          Not documented
     '8'
          Not documented
     '9'
          Not documented
     '0'
          Not documented
     'minus'
          Not documented
     'equal'
          Not documented
     'backspace'
          Not documented
     'tab'
          Not documented
     'q'
          Not documented
     'w'
          Not documented
     'e'
          Not documented
     'r'
          Not documented
     't'
          Not documented
     'y'
          Not documented
     'u'
          Not documented
     'i'
          Not documented
     'o'
          Not documented
     'p'
          Not documented
     'bracket_left'
          Not documented
     'bracket_right'
          Not documented
     'ret'
          Not documented
     'a'
          Not documented
     's'
          Not documented
     'd'
          Not documented
     'f'
          Not documented
     'g'
          Not documented
     'h'
          Not documented
     'j'
          Not documented
     'k'
          Not documented
     'l'
          Not documented
     'semicolon'
          Not documented
     'apostrophe'
          Not documented
     'grave_accent'
          Not documented
     'backslash'
          Not documented
     'z'
          Not documented
     'x'
          Not documented
     'c'
          Not documented
     'v'
          Not documented
     'b'
          Not documented
     'n'
          Not documented
     'm'
          Not documented
     'comma'
          Not documented
     'dot'
          Not documented
     'slash'
          Not documented
     'asterisk'
          Not documented
     'spc'
          Not documented
     'caps_lock'
          Not documented
     'f1'
          Not documented
     'f2'
          Not documented
     'f3'
          Not documented
     'f4'
          Not documented
     'f5'
          Not documented
     'f6'
          Not documented
     'f7'
          Not documented
     'f8'
          Not documented
     'f9'
          Not documented
     'f10'
          Not documented
     'num_lock'
          Not documented
     'scroll_lock'
          Not documented
     'kp_divide'
          Not documented
     'kp_multiply'
          Not documented
     'kp_subtract'
          Not documented
     'kp_add'
          Not documented
     'kp_enter'
          Not documented
     'kp_decimal'
          Not documented
     'sysrq'
          Not documented
     'kp_0'
          Not documented
     'kp_1'
          Not documented
     'kp_2'
          Not documented
     'kp_3'
          Not documented
     'kp_4'
          Not documented
     'kp_5'
          Not documented
     'kp_6'
          Not documented
     'kp_7'
          Not documented
     'kp_8'
          Not documented
     'kp_9'
          Not documented
     'less'
          Not documented
     'f11'
          Not documented
     'f12'
          Not documented
     'print'
          Not documented
     'home'
          Not documented
     'pgup'
          Not documented
     'pgdn'
          Not documented
     'end'
          Not documented
     'left'
          Not documented
     'up'
          Not documented
     'down'
          Not documented
     'right'
          Not documented
     'insert'
          Not documented
     'delete'
          Not documented
     'stop'
          Not documented
     'again'
          Not documented
     'props'
          Not documented
     'undo'
          Not documented
     'front'
          Not documented
     'copy'
          Not documented
     'open'
          Not documented
     'paste'
          Not documented
     'find'
          Not documented
     'cut'
          Not documented
     'lf'
          Not documented
     'help'
          Not documented
     'meta_l'
          Not documented
     'meta_r'
          Not documented
     'compose'
          Not documented
     'sysrq' was mistakenly added to hack around the fact that the ps2
     driver was not generating correct scancodes sequences when
     'alt+print' was pressed.  This flaw is now fixed and the 'sysrq'
     key serves no further purpose.  Any further use of 'sysrq' will be
     transparently changed to 'print', so they are effectively synonyms.

     Since: 1.3.0

 -- Object: KeyValue

     Represents a keyboard key.

     Members:
     'type'
          One of "number", "qcode"
     'data: int' when 'type' is "number"
     'data: QKeyCode' when 'type' is "qcode"

     Since: 1.3.0

 -- Command: send-key

     Send keys to guest.

     Arguments:
     'keys: array of KeyValue'
          An array of 'KeyValue' elements.  All 'KeyValues' in this
          array are simultaneously sent to the guest.  A
          'KeyValue'.number value is sent directly to the guest, while
          'KeyValue'.qcode must be a valid 'QKeyCode' value
     'hold-time: int' (optional)
          time to delay key up events, milliseconds.  Defaults to 100

     Returns: Nothing on success If key is unknown or redundant,
     InvalidParameter

     Since: 1.3.0

     Example:
          -> { "execute": "send-key",
               "arguments": { "keys": [ { "type": "qcode", "data": "ctrl" },
                                        { "type": "qcode", "data": "alt" },
                                        { "type": "qcode", "data": "delete" } ] } }
          <- { "return": {} }

 -- Enum: InputButton

     Button of a pointer input device (mouse, tablet).

     Values:
     'side'
          front side button of a 5-button mouse (since 2.9)
     'extra'
          rear side button of a 5-button mouse (since 2.9)
     'left'
          Not documented
     'middle'
          Not documented
     'right'
          Not documented
     'wheel-up'
          Not documented
     'wheel-down'
          Not documented

     Since: 2.0

 -- Enum: InputAxis

     Position axis of a pointer input device (mouse, tablet).

     Values:
     'x'
          Not documented
     'y'
          Not documented

     Since: 2.0

 -- Object: InputKeyEvent

     Keyboard input event.

     Members:
     'key: KeyValue'
          Which key this event is for.
     'down: boolean'
          True for key-down and false for key-up events.

     Since: 2.0

 -- Object: InputBtnEvent

     Pointer button input event.

     Members:
     'button: InputButton'
          Which button this event is for.
     'down: boolean'
          True for key-down and false for key-up events.

     Since: 2.0

 -- Object: InputMoveEvent

     Pointer motion input event.

     Members:
     'axis: InputAxis'
          Which axis is referenced by 'value'.
     'value: int'
          Pointer position.  For absolute coordinates the valid range is
          0 -> 0x7ffff

     Since: 2.0

 -- Object: InputEvent

     Input event union.

     Members:
     'type'
          the input type, one of:
             - 'key': Input event of Keyboard
             - 'btn': Input event of pointer buttons
             - 'rel': Input event of relative pointer motion
             - 'abs': Input event of absolute pointer motion

     'data: InputKeyEvent' when 'type' is "key"
     'data: InputBtnEvent' when 'type' is "btn"
     'data: InputMoveEvent' when 'type' is "rel"
     'data: InputMoveEvent' when 'type' is "abs"

     Since: 2.0

 -- Command: input-send-event

     Send input event(s) to guest.

     Arguments:
     'device: string' (optional)
          display device to send event(s) to.
     'head: int' (optional)
          head to send event(s) to, in case the display device supports
          multiple scanouts.
     'events: array of InputEvent'
          List of InputEvent union.

     Returns: Nothing on success.

     The 'device' and 'head' parameters can be used to send the input
     event to specific input devices in case (a) multiple input devices
     of the same kind are added to the virtual machine and (b) you have
     configured input routing (see docs/multiseat.txt) for those input
     devices.  The parameters work exactly like the device and head
     properties of input devices.  If 'device' is missing, only devices
     that have no input routing config are admissible.  If 'device' is
     specified, both input devices with and without input routing config
     are admissible, but devices with input routing config take
     precedence.

     Since: 2.6

     Note: The consoles are visible in the qom tree, under
     /backend/console[$index].  They have a device link and head
     property, so it is possible to map which console belongs to which
     device and display.

     Example:
          1. Press left mouse button.

          -> { "execute": "input-send-event",
              "arguments": { "device": "video0",
                             "events": [ { "type": "btn",
                             "data" : { "down": true, "button": "left" } } ] } }
          <- { "return": {} }

          -> { "execute": "input-send-event",
              "arguments": { "device": "video0",
                             "events": [ { "type": "btn",
                             "data" : { "down": false, "button": "left" } } ] } }
          <- { "return": {} }

          2. Press ctrl-alt-del.

          -> { "execute": "input-send-event",
               "arguments": { "events": [
                  { "type": "key", "data" : { "down": true,
                    "key": {"type": "qcode", "data": "ctrl" } } },
                  { "type": "key", "data" : { "down": true,
                    "key": {"type": "qcode", "data": "alt" } } },
                  { "type": "key", "data" : { "down": true,
                    "key": {"type": "qcode", "data": "delete" } } } ] } }
          <- { "return": {} }

          3. Move mouse pointer to absolute coordinates (20000, 400).

          -> { "execute": "input-send-event" ,
            "arguments": { "events": [
                         { "type": "abs", "data" : { "axis": "x", "value" : 20000 } },
                         { "type": "abs", "data" : { "axis": "y", "value" : 400 } } ] } }
          <- { "return": {} }

 -- Enum: GrabToggleKeys

     Keys to toggle input-linux between host and guest.

     Values:
     'ctrl-ctrl'
          Not documented
     'alt-alt'
          Not documented
     'shift-shift'
          Not documented
     'meta-meta'
          Not documented
     'scrolllock'
          Not documented
     'ctrl-scrolllock'
          Not documented

     Since: 4.0

 -- Object: DisplayGTK

     GTK display options.

     Members:
     'grab-on-hover: boolean' (optional)
          Grab keyboard input on mouse hover.
     'zoom-to-fit: boolean' (optional)
          Zoom guest display to fit into the host window.  When turned
          off the host window will be resized instead.  In case the
          display device can notify the guest on window resizes
          (virtio-gpu) this will default to "on", assuming the guest
          will resize the display to match the window size then.
          Otherwise it defaults to "off".  Since 3.1

     Since: 2.12

 -- Object: DisplayEGLHeadless

     EGL headless display options.

     Members:
     'rendernode: string' (optional)
          Which DRM render node should be used.  Default is the first
          available node on the host.

     Since: 3.1

 -- Enum: DisplayGLMode

     Display OpenGL mode.

     Values:
     'off'
          Disable OpenGL (default).
     'on'
          Use OpenGL, pick context type automatically.  Would better be
          named 'auto' but is called 'on' for backward compatibility
          with bool type.
     'core'
          Use OpenGL with Core (desktop) Context.
     'es'
          Use OpenGL with ES (embedded systems) Context.

     Since: 3.0

 -- Object: DisplayCurses

     Curses display options.

     Members:
     'charset: string' (optional)
          Font charset used by guest (default: CP437).

     Since: 4.0

 -- Enum: DisplayType

     Display (user interface) type.

     Values:
     'default'
          The default user interface, selecting from the first available
          of gtk, sdl, cocoa, and vnc.
     'none'
          No user interface or video output display.  The guest will
          still see an emulated graphics card, but its output will not
          be displayed to the QEMU user.
     'gtk'
          The GTK user interface.
     'sdl'
          The SDL user interface.
     'egl-headless'
          No user interface, offload GL operations to a local DRI
          device.  Graphical display need to be paired with VNC or
          Spice.  (Since 3.1)
     'curses'
          Display video output via curses.  For graphics device models
          which support a text mode, QEMU can display this output using
          a curses/ncurses interface.  Nothing is displayed when the
          graphics device is in graphical mode or if the graphics device
          does not support a text mode.  Generally only the VGA device
          models support text mode.
     'cocoa'
          The Cocoa user interface.
     'spice-app'
          Set up a Spice server and run the default associated
          application to connect to it.  The server will redirect the
          serial console and QEMU monitors.  (Since 4.0)

     Since: 2.12

 -- Object: DisplayOptions

     Display (user interface) options.

     Members:
     'type: DisplayType'
          Which DisplayType qemu should use.
     'full-screen: boolean' (optional)
          Start user interface in fullscreen mode (default: off).
     'window-close: boolean' (optional)
          Allow to quit qemu with window close button (default: on).
     'gl: DisplayGLMode' (optional)
          Enable OpenGL support (default: off).
     The members of 'DisplayGTK' when 'type' is "gtk"
     The members of 'DisplayCurses' when 'type' is "curses"
     The members of 'DisplayEGLHeadless' when 'type' is "egl-headless"

     Since: 2.12

 -- Command: query-display-options

     Returns information about display configuration

     Returns: 'DisplayOptions'

     Since: 3.1

 -- Enum: QAuthZListPolicy

     The authorization policy result

     Values:
     'deny'
          deny access
     'allow'
          allow access

     Since: 4.0

 -- Enum: QAuthZListFormat

     The authorization policy match format

     Values:
     'exact'
          an exact string match
     'glob'
          string with ?  and * shell wildcard support

     Since: 4.0

 -- Object: QAuthZListRule

     A single authorization rule.

     Members:
     'match: string'
          a string or glob to match against a user identity
     'policy: QAuthZListPolicy'
          the result to return if 'match' evaluates to true
     'format: QAuthZListFormat' (optional)
          the format of the 'match' rule (default 'exact')

     Since: 4.0

 -- Object: QAuthZListRuleListHack

     Not exposed via QMP; hack to generate QAuthZListRuleList for use
     internally by the code.

     Members:
     'unused: array of QAuthZListRule'
          Not documented

     Since: 4.0

1.17 Migration
==============

 -- Object: MigrationStats

     Detailed migration status.

     Members:
     'transferred: int'
          amount of bytes already transferred to the target VM
     'remaining: int'
          amount of bytes remaining to be transferred to the target VM
     'total: int'
          total amount of bytes involved in the migration process
     'duplicate: int'
          number of duplicate (zero) pages (since 1.2)
     'skipped: int'
          number of skipped zero pages (since 1.5)
     'normal: int'
          number of normal pages (since 1.2)
     'normal-bytes: int'
          number of normal bytes sent (since 1.2)
     'dirty-pages-rate: int'
          number of pages dirtied by second by the guest (since 1.3)
     'mbps: number'
          throughput in megabits/sec.  (since 1.6)
     'dirty-sync-count: int'
          number of times that dirty ram was synchronized (since 2.1)
     'postcopy-requests: int'
          The number of page requests received from the destination
          (since 2.7)
     'page-size: int'
          The number of bytes per page for the various page-based
          statistics (since 2.10)
     'multifd-bytes: int'
          The number of bytes sent through multifd (since 3.0)
     'pages-per-second: int'
          the number of memory pages transferred per second (Since 4.0)

     Since: 0.14.0

 -- Object: XBZRLECacheStats

     Detailed XBZRLE migration cache statistics

     Members:
     'cache-size: int'
          XBZRLE cache size
     'bytes: int'
          amount of bytes already transferred to the target VM
     'pages: int'
          amount of pages transferred to the target VM
     'cache-miss: int'
          number of cache miss
     'cache-miss-rate: number'
          rate of cache miss (since 2.1)
     'overflow: int'
          number of overflows

     Since: 1.2

 -- Object: CompressionStats

     Detailed migration compression statistics

     Members:
     'pages: int'
          amount of pages compressed and transferred to the target VM
     'busy: int'
          count of times that no free thread was available to compress
          data
     'busy-rate: number'
          rate of thread busy
     'compressed-size: int'
          amount of bytes after compression
     'compression-rate: number'
          rate of compressed size

     Since: 3.1

 -- Enum: MigrationStatus

     An enumeration of migration status.

     Values:
     'none'
          no migration has ever happened.
     'setup'
          migration process has been initiated.
     'cancelling'
          in the process of cancelling migration.
     'cancelled'
          cancelling migration is finished.
     'active'
          in the process of doing migration.
     'postcopy-active'
          like active, but now in postcopy mode.  (since 2.5)
     'postcopy-paused'
          during postcopy but paused.  (since 3.0)
     'postcopy-recover'
          trying to recover from a paused postcopy.  (since 3.0)
     'completed'
          migration is finished.
     'failed'
          some error occurred during migration process.
     'colo'
          VM is in the process of fault tolerance, VM can not get into
          this state unless colo capability is enabled for migration.
          (since 2.8)
     'pre-switchover'
          Paused before device serialisation.  (since 2.11)
     'device'
          During device serialisation when pause-before-switchover is
          enabled (since 2.11)
     'wait-unplug'
          wait for device unplug request by guest OS to be completed.
          (since 4.2)

     Since: 2.3

 -- Object: MigrationInfo

     Information about current migration process.

     Members:
     'status: MigrationStatus' (optional)
          'MigrationStatus' describing the current migration status.  If
          this field is not returned, no migration process has been
          initiated
     'ram: MigrationStats' (optional)
          'MigrationStats' containing detailed migration status, only
          returned if status is 'active' or 'completed'(since 1.2)
     'disk: MigrationStats' (optional)
          'MigrationStats' containing detailed disk migration status,
          only returned if status is 'active' and it is a block
          migration
     'xbzrle-cache: XBZRLECacheStats' (optional)
          'XBZRLECacheStats' containing detailed XBZRLE migration
          statistics, only returned if XBZRLE feature is on and status
          is 'active' or 'completed' (since 1.2)
     'total-time: int' (optional)
          total amount of milliseconds since migration started.  If
          migration has ended, it returns the total migration time.
          (since 1.2)
     'downtime: int' (optional)
          only present when migration finishes correctly total downtime
          in milliseconds for the guest.  (since 1.3)
     'expected-downtime: int' (optional)
          only present while migration is active expected downtime in
          milliseconds for the guest in last walk of the dirty bitmap.
          (since 1.3)
     'setup-time: int' (optional)
          amount of setup time in milliseconds _before_ the iterations
          begin but _after_ the QMP command is issued.  This is designed
          to provide an accounting of any activities (such as RDMA
          pinning) which may be expensive, but do not actually occur
          during the iterative migration rounds themselves.  (since 1.6)
     'cpu-throttle-percentage: int' (optional)
          percentage of time guest cpus are being throttled during
          auto-converge.  This is only present when auto-converge has
          started throttling guest cpus.  (Since 2.7)
     'error-desc: string' (optional)
          the human readable error description string, when 'status' is
          'failed'.  Clients should not attempt to parse the error
          strings.  (Since 2.7)
     'postcopy-blocktime: int' (optional)
          total time when all vCPU were blocked during postcopy live
          migration.  This is only present when the postcopy-blocktime
          migration capability is enabled.  (Since 3.0)
     'postcopy-vcpu-blocktime: array of int' (optional)
          list of the postcopy blocktime per vCPU. This is only present
          when the postcopy-blocktime migration capability is enabled.
          (Since 3.0)
     'compression: CompressionStats' (optional)
          migration compression statistics, only returned if compression
          feature is on and status is 'active' or 'completed' (Since
          3.1)
     'socket-address: array of SocketAddress' (optional)
          Only used for tcp, to know what the real port is (Since 4.0)

     Since: 0.14.0

 -- Command: query-migrate

     Returns information about current migration process.  If migration
     is active there will be another json-object with RAM migration
     status and if block migration is active another one with block
     migration status.

     Returns: 'MigrationInfo'

     Since: 0.14.0

     Example:
          1. Before the first migration

          -> { "execute": "query-migrate" }
          <- { "return": {} }

          2. Migration is done and has succeeded

          -> { "execute": "query-migrate" }
          <- { "return": {
                  "status": "completed",
                  "total-time":12345,
                  "setup-time":12345,
                  "downtime":12345,
                  "ram":{
                    "transferred":123,
                    "remaining":123,
                    "total":246,
                    "duplicate":123,
                    "normal":123,
                    "normal-bytes":123456,
                    "dirty-sync-count":15
                  }
               }
             }

          3. Migration is done and has failed

          -> { "execute": "query-migrate" }
          <- { "return": { "status": "failed" } }

          4. Migration is being performed and is not a block migration:

          -> { "execute": "query-migrate" }
          <- {
                "return":{
                   "status":"active",
                   "total-time":12345,
                   "setup-time":12345,
                   "expected-downtime":12345,
                   "ram":{
                      "transferred":123,
                      "remaining":123,
                      "total":246,
                      "duplicate":123,
                      "normal":123,
                      "normal-bytes":123456,
                      "dirty-sync-count":15
                   }
                }
             }

          5. Migration is being performed and is a block migration:

          -> { "execute": "query-migrate" }
          <- {
                "return":{
                   "status":"active",
                   "total-time":12345,
                   "setup-time":12345,
                   "expected-downtime":12345,
                   "ram":{
                      "total":1057024,
                      "remaining":1053304,
                      "transferred":3720,
                      "duplicate":123,
                      "normal":123,
                      "normal-bytes":123456,
                      "dirty-sync-count":15
                   },
                   "disk":{
                      "total":20971520,
                      "remaining":20880384,
                      "transferred":91136
                   }
                }
             }

          6. Migration is being performed and XBZRLE is active:

          -> { "execute": "query-migrate" }
          <- {
                "return":{
                   "status":"active",
                   "total-time":12345,
                   "setup-time":12345,
                   "expected-downtime":12345,
                   "ram":{
                      "total":1057024,
                      "remaining":1053304,
                      "transferred":3720,
                      "duplicate":10,
                      "normal":3333,
                      "normal-bytes":3412992,
                      "dirty-sync-count":15
                   },
                   "xbzrle-cache":{
                      "cache-size":67108864,
                      "bytes":20971520,
                      "pages":2444343,
                      "cache-miss":2244,
                      "cache-miss-rate":0.123,
                      "overflow":34434
                   }
                }
             }

 -- Enum: MigrationCapability

     Migration capabilities enumeration

     Values:
     'xbzrle'
          Migration supports xbzrle (Xor Based Zero Run Length
          Encoding).  This feature allows us to minimize migration
          traffic for certain work loads, by sending compressed
          difference of the pages
     'rdma-pin-all'
          Controls whether or not the entire VM memory footprint is
          mlock()'d on demand or all at once.  Refer to docs/rdma.txt
          for usage.  Disabled by default.  (since 2.0)
     'zero-blocks'
          During storage migration encode blocks of zeroes efficiently.
          This essentially saves 1MB of zeroes per block on the wire.
          Enabling requires source and target VM to support this
          feature.  To enable it is sufficient to enable the capability
          on the source VM. The feature is disabled by default.  (since
          1.6)
     'compress'
          Use multiple compression threads to accelerate live migration.
          This feature can help to reduce the migration traffic, by
          sending compressed pages.  Please note that if compress and
          xbzrle are both on, compress only takes effect in the ram bulk
          stage, after that, it will be disabled and only xbzrle takes
          effect, this can help to minimize migration traffic.  The
          feature is disabled by default.  (since 2.4 )
     'events'
          generate events for each migration state change (since 2.4 )
     'auto-converge'
          If enabled, QEMU will automatically throttle down the guest to
          speed up convergence of RAM migration.  (since 1.6)
     'postcopy-ram'
          Start executing on the migration target before all of RAM has
          been migrated, pulling the remaining pages along as needed.
          The capacity must have the same setting on both source and
          target or migration will not even start.  NOTE: If the
          migration fails during postcopy the VM will fail.  (since 2.6)
     'x-colo'
          If enabled, migration will never end, and the state of the VM
          on the primary side will be migrated continuously to the VM on
          secondary side, this process is called COarse-Grain LOck
          Stepping (COLO) for Non-stop Service.  (since 2.8)
     'release-ram'
          if enabled, qemu will free the migrated ram pages on the
          source during postcopy-ram migration.  (since 2.9)
     'block'
          If enabled, QEMU will also migrate the contents of all block
          devices.  Default is disabled.  A possible alternative uses
          mirror jobs to a builtin NBD server on the destination, which
          offers more flexibility.  (Since 2.10)
     'return-path'
          If enabled, migration will use the return path even for
          precopy.  (since 2.10)
     'pause-before-switchover'
          Pause outgoing migration before serialising device state and
          before disabling block IO (since 2.11)
     'multifd'
          Use more than one fd for migration (since 4.0)
     'dirty-bitmaps'
          If enabled, QEMU will migrate named dirty bitmaps.  (since
          2.12)
     'postcopy-blocktime'
          Calculate downtime for postcopy live migration (since 3.0)
     'late-block-activate'
          If enabled, the destination will not activate block devices
          (and thus take locks) immediately at the end of migration.
          (since 3.0)
     'x-ignore-shared'
          If enabled, QEMU will not migrate shared memory (since 4.0)
     'validate-uuid'
          Send the UUID of the source to allow the destination to ensure
          it is the same.  (since 4.2)

     Since: 1.2

 -- Object: MigrationCapabilityStatus

     Migration capability information

     Members:
     'capability: MigrationCapability'
          capability enum
     'state: boolean'
          capability state bool

     Since: 1.2

 -- Command: migrate-set-capabilities

     Enable/Disable the following migration capabilities (like xbzrle)

     Arguments:
     'capabilities: array of MigrationCapabilityStatus'
          json array of capability modifications to make

     Since: 1.2

     Example:
          -> { "execute": "migrate-set-capabilities" , "arguments":
               { "capabilities": [ { "capability": "xbzrle", "state": true } ] } }

 -- Command: query-migrate-capabilities

     Returns information about the current migration capabilities status

     Returns: 'MigrationCapabilitiesStatus'

     Since: 1.2

     Example:
          -> { "execute": "query-migrate-capabilities" }
          <- { "return": [
                {"state": false, "capability": "xbzrle"},
                {"state": false, "capability": "rdma-pin-all"},
                {"state": false, "capability": "auto-converge"},
                {"state": false, "capability": "zero-blocks"},
                {"state": false, "capability": "compress"},
                {"state": true, "capability": "events"},
                {"state": false, "capability": "postcopy-ram"},
                {"state": false, "capability": "x-colo"}
             ]}

 -- Enum: MigrationParameter

     Migration parameters enumeration

     Values:
     'announce-initial'
          Initial delay (in milliseconds) before sending the first
          announce (Since 4.0)
     'announce-max'
          Maximum delay (in milliseconds) between packets in the
          announcement (Since 4.0)
     'announce-rounds'
          Number of self-announce packets sent after migration (Since
          4.0)
     'announce-step'
          Increase in delay (in milliseconds) between subsequent packets
          in the announcement (Since 4.0)
     'compress-level'
          Set the compression level to be used in live migration, the
          compression level is an integer between 0 and 9, where 0 means
          no compression, 1 means the best compression speed, and 9
          means best compression ratio which will consume more CPU.
     'compress-threads'
          Set compression thread count to be used in live migration, the
          compression thread count is an integer between 1 and 255.
     'compress-wait-thread'
          Controls behavior when all compression threads are currently
          busy.  If true (default), wait for a free compression thread
          to become available; otherwise, send the page uncompressed.
          (Since 3.1)
     'decompress-threads'
          Set decompression thread count to be used in live migration,
          the decompression thread count is an integer between 1 and
          255.  Usually, decompression is at least 4 times as fast as
          compression, so set the decompress-threads to the number about
          1/4 of compress-threads is adequate.
     'cpu-throttle-initial'
          Initial percentage of time guest cpus are throttled when
          migration auto-converge is activated.  The default value is
          20.  (Since 2.7)
     'cpu-throttle-increment'
          throttle percentage increase each time auto-converge detects
          that migration is not making progress.  The default value is
          10.  (Since 2.7)
     'tls-creds'
          ID of the 'tls-creds' object that provides credentials for
          establishing a TLS connection over the migration data channel.
          On the outgoing side of the migration, the credentials must be
          for a 'client' endpoint, while for the incoming side the
          credentials must be for a 'server' endpoint.  Setting this
          will enable TLS for all migrations.  The default is unset,
          resulting in unsecured migration at the QEMU level.  (Since
          2.7)
     'tls-hostname'
          hostname of the target host for the migration.  This is
          required when using x509 based TLS credentials and the
          migration URI does not already include a hostname.  For
          example if using fd: or exec: based migration, the hostname
          must be provided so that the server's x509 certificate
          identity can be validated.  (Since 2.7)
     'tls-authz'
          ID of the 'authz' object subclass that provides access control
          checking of the TLS x509 certificate distinguished name.  This
          object is only resolved at time of use, so can be deleted and
          recreated on the fly while the migration server is active.  If
          missing, it will default to denying access (Since 4.0)
     'max-bandwidth'
          to set maximum speed for migration.  maximum speed in bytes
          per second.  (Since 2.8)
     'downtime-limit'
          set maximum tolerated downtime for migration.  maximum
          downtime in milliseconds (Since 2.8)
     'x-checkpoint-delay'
          The delay time (in ms) between two COLO checkpoints in
          periodic mode.  (Since 2.8)
     'block-incremental'
          Affects how much storage is migrated when the block migration
          capability is enabled.  When false, the entire storage backing
          chain is migrated into a flattened image at the destination;
          when true, only the active qcow2 layer is migrated and the
          destination must already have access to the same backing chain
          as was used on the source.  (since 2.10)
     'multifd-channels'
          Number of channels used to migrate data in parallel.  This is
          the same number that the number of sockets used for migration.
          The default value is 2 (since 4.0)
     'xbzrle-cache-size'
          cache size to be used by XBZRLE migration.  It needs to be a
          multiple of the target page size and a power of 2 (Since 2.11)
     'max-postcopy-bandwidth'
          Background transfer bandwidth during postcopy.  Defaults to 0
          (unlimited).  In bytes per second.  (Since 3.0)
     'max-cpu-throttle'
          maximum cpu throttle percentage.  Defaults to 99.  (Since 3.1)

     Since: 2.4

 -- Object: MigrateSetParameters

     Members:
     'announce-initial: int' (optional)
          Initial delay (in milliseconds) before sending the first
          announce (Since 4.0)
     'announce-max: int' (optional)
          Maximum delay (in milliseconds) between packets in the
          announcement (Since 4.0)
     'announce-rounds: int' (optional)
          Number of self-announce packets sent after migration (Since
          4.0)
     'announce-step: int' (optional)
          Increase in delay (in milliseconds) between subsequent packets
          in the announcement (Since 4.0)
     'compress-level: int' (optional)
          compression level
     'compress-threads: int' (optional)
          compression thread count
     'compress-wait-thread: boolean' (optional)
          Controls behavior when all compression threads are currently
          busy.  If true (default), wait for a free compression thread
          to become available; otherwise, send the page uncompressed.
          (Since 3.1)
     'decompress-threads: int' (optional)
          decompression thread count
     'cpu-throttle-initial: int' (optional)
          Initial percentage of time guest cpus are throttled when
          migration auto-converge is activated.  The default value is
          20.  (Since 2.7)
     'cpu-throttle-increment: int' (optional)
          throttle percentage increase each time auto-converge detects
          that migration is not making progress.  The default value is
          10.  (Since 2.7)
     'tls-creds: StrOrNull' (optional)
          ID of the 'tls-creds' object that provides credentials for
          establishing a TLS connection over the migration data channel.
          On the outgoing side of the migration, the credentials must be
          for a 'client' endpoint, while for the incoming side the
          credentials must be for a 'server' endpoint.  Setting this to
          a non-empty string enables TLS for all migrations.  An empty
          string means that QEMU will use plain text mode for migration,
          rather than TLS (Since 2.9) Previously (since 2.7), this was
          reported by omitting tls-creds instead.
     'tls-hostname: StrOrNull' (optional)
          hostname of the target host for the migration.  This is
          required when using x509 based TLS credentials and the
          migration URI does not already include a hostname.  For
          example if using fd: or exec: based migration, the hostname
          must be provided so that the server's x509 certificate
          identity can be validated.  (Since 2.7) An empty string means
          that QEMU will use the hostname associated with the migration
          URI, if any.  (Since 2.9) Previously (since 2.7), this was
          reported by omitting tls-hostname instead.
     'max-bandwidth: int' (optional)
          to set maximum speed for migration.  maximum speed in bytes
          per second.  (Since 2.8)
     'downtime-limit: int' (optional)
          set maximum tolerated downtime for migration.  maximum
          downtime in milliseconds (Since 2.8)
     'x-checkpoint-delay: int' (optional)
          the delay time between two COLO checkpoints.  (Since 2.8)
     'block-incremental: boolean' (optional)
          Affects how much storage is migrated when the block migration
          capability is enabled.  When false, the entire storage backing
          chain is migrated into a flattened image at the destination;
          when true, only the active qcow2 layer is migrated and the
          destination must already have access to the same backing chain
          as was used on the source.  (since 2.10)
     'multifd-channels: int' (optional)
          Number of channels used to migrate data in parallel.  This is
          the same number that the number of sockets used for migration.
          The default value is 2 (since 4.0)
     'xbzrle-cache-size: int' (optional)
          cache size to be used by XBZRLE migration.  It needs to be a
          multiple of the target page size and a power of 2 (Since 2.11)
     'max-postcopy-bandwidth: int' (optional)
          Background transfer bandwidth during postcopy.  Defaults to 0
          (unlimited).  In bytes per second.  (Since 3.0)
     'max-cpu-throttle: int' (optional)
          maximum cpu throttle percentage.  The default value is 99.
          (Since 3.1)
     'tls-authz: StrOrNull' (optional)
          Not documented

     Since: 2.4

 -- Command: migrate-set-parameters

     Set various migration parameters.

     Arguments: the members of 'MigrateSetParameters'

     Since: 2.4

     Example:
          -> { "execute": "migrate-set-parameters" ,
               "arguments": { "compress-level": 1 } }

 -- Object: MigrationParameters

     The optional members aren't actually optional.

     Members:
     'announce-initial: int' (optional)
          Initial delay (in milliseconds) before sending the first
          announce (Since 4.0)
     'announce-max: int' (optional)
          Maximum delay (in milliseconds) between packets in the
          announcement (Since 4.0)
     'announce-rounds: int' (optional)
          Number of self-announce packets sent after migration (Since
          4.0)
     'announce-step: int' (optional)
          Increase in delay (in milliseconds) between subsequent packets
          in the announcement (Since 4.0)
     'compress-level: int' (optional)
          compression level
     'compress-threads: int' (optional)
          compression thread count
     'compress-wait-thread: boolean' (optional)
          Controls behavior when all compression threads are currently
          busy.  If true (default), wait for a free compression thread
          to become available; otherwise, send the page uncompressed.
          (Since 3.1)
     'decompress-threads: int' (optional)
          decompression thread count
     'cpu-throttle-initial: int' (optional)
          Initial percentage of time guest cpus are throttled when
          migration auto-converge is activated.  (Since 2.7)
     'cpu-throttle-increment: int' (optional)
          throttle percentage increase each time auto-converge detects
          that migration is not making progress.  (Since 2.7)
     'tls-creds: string' (optional)
          ID of the 'tls-creds' object that provides credentials for
          establishing a TLS connection over the migration data channel.
          On the outgoing side of the migration, the credentials must be
          for a 'client' endpoint, while for the incoming side the
          credentials must be for a 'server' endpoint.  An empty string
          means that QEMU will use plain text mode for migration, rather
          than TLS (Since 2.7) Note: 2.8 reports this by omitting
          tls-creds instead.
     'tls-hostname: string' (optional)
          hostname of the target host for the migration.  This is
          required when using x509 based TLS credentials and the
          migration URI does not already include a hostname.  For
          example if using fd: or exec: based migration, the hostname
          must be provided so that the server's x509 certificate
          identity can be validated.  (Since 2.7) An empty string means
          that QEMU will use the hostname associated with the migration
          URI, if any.  (Since 2.9) Note: 2.8 reports this by omitting
          tls-hostname instead.
     'tls-authz: string' (optional)
          ID of the 'authz' object subclass that provides access control
          checking of the TLS x509 certificate distinguished name.
          (Since 4.0)
     'max-bandwidth: int' (optional)
          to set maximum speed for migration.  maximum speed in bytes
          per second.  (Since 2.8)
     'downtime-limit: int' (optional)
          set maximum tolerated downtime for migration.  maximum
          downtime in milliseconds (Since 2.8)
     'x-checkpoint-delay: int' (optional)
          the delay time between two COLO checkpoints.  (Since 2.8)
     'block-incremental: boolean' (optional)
          Affects how much storage is migrated when the block migration
          capability is enabled.  When false, the entire storage backing
          chain is migrated into a flattened image at the destination;
          when true, only the active qcow2 layer is migrated and the
          destination must already have access to the same backing chain
          as was used on the source.  (since 2.10)
     'multifd-channels: int' (optional)
          Number of channels used to migrate data in parallel.  This is
          the same number that the number of sockets used for migration.
          The default value is 2 (since 4.0)
     'xbzrle-cache-size: int' (optional)
          cache size to be used by XBZRLE migration.  It needs to be a
          multiple of the target page size and a power of 2 (Since 2.11)
     'max-postcopy-bandwidth: int' (optional)
          Background transfer bandwidth during postcopy.  Defaults to 0
          (unlimited).  In bytes per second.  (Since 3.0)
     'max-cpu-throttle: int' (optional)
          maximum cpu throttle percentage.  Defaults to 99.  (Since 3.1)

     Since: 2.4

 -- Command: query-migrate-parameters

     Returns information about the current migration parameters

     Returns: 'MigrationParameters'

     Since: 2.4

     Example:
          -> { "execute": "query-migrate-parameters" }
          <- { "return": {
                   "decompress-threads": 2,
                   "cpu-throttle-increment": 10,
                   "compress-threads": 8,
                   "compress-level": 1,
                   "cpu-throttle-initial": 20,
                   "max-bandwidth": 33554432,
                   "downtime-limit": 300
                }
             }

 -- Command: client_migrate_info

     Set migration information for remote display.  This makes the
     server ask the client to automatically reconnect using the new
     parameters once migration finished successfully.  Only implemented
     for SPICE.

     Arguments:
     'protocol: string'
          must be "spice"
     'hostname: string'
          migration target hostname
     'port: int' (optional)
          spice tcp port for plaintext channels
     'tls-port: int' (optional)
          spice tcp port for tls-secured channels
     'cert-subject: string' (optional)
          server certificate subject

     Since: 0.14.0

     Example:
          -> { "execute": "client_migrate_info",
               "arguments": { "protocol": "spice",
                              "hostname": "virt42.lab.kraxel.org",
                              "port": 1234 } }
          <- { "return": {} }

 -- Command: migrate-start-postcopy

     Followup to a migration command to switch the migration to postcopy
     mode.  The postcopy-ram capability must be set on both source and
     destination before the original migration command.

     Since: 2.5

     Example:
          -> { "execute": "migrate-start-postcopy" }
          <- { "return": {} }

 -- Event: MIGRATION

     Emitted when a migration event happens

     Arguments:
     'status: MigrationStatus'
          'MigrationStatus' describing the current migration status.

     Since: 2.4

     Example:
          <- {"timestamp": {"seconds": 1432121972, "microseconds": 744001},
              "event": "MIGRATION",
              "data": {"status": "completed"} }

 -- Event: MIGRATION_PASS

     Emitted from the source side of a migration at the start of each
     pass (when it syncs the dirty bitmap)

     Arguments:
     'pass: int'
          An incrementing count (starting at 1 on the first pass)

     Since: 2.6

     Example:
          { "timestamp": {"seconds": 1449669631, "microseconds": 239225},
            "event": "MIGRATION_PASS", "data": {"pass": 2} }

 -- Enum: COLOMessage

     The message transmission between Primary side and Secondary side.

     Values:
     'checkpoint-ready'
          Secondary VM (SVM) is ready for checkpointing
     'checkpoint-request'
          Primary VM (PVM) tells SVM to prepare for checkpointing
     'checkpoint-reply'
          SVM gets PVM's checkpoint request
     'vmstate-send'
          VM's state will be sent by PVM.
     'vmstate-size'
          The total size of VMstate.
     'vmstate-received'
          VM's state has been received by SVM.
     'vmstate-loaded'
          VM's state has been loaded by SVM.

     Since: 2.8

 -- Enum: COLOMode

     The COLO current mode.

     Values:
     'none'
          COLO is disabled.
     'primary'
          COLO node in primary side.
     'secondary'
          COLO node in slave side.

     Since: 2.8

 -- Enum: FailoverStatus

     An enumeration of COLO failover status

     Values:
     'none'
          no failover has ever happened
     'require'
          got failover requirement but not handled
     'active'
          in the process of doing failover
     'completed'
          finish the process of failover
     'relaunch'
          restart the failover process, from 'none' -> 'completed'
          (Since 2.9)

     Since: 2.8

 -- Event: COLO_EXIT

     Emitted when VM finishes COLO mode due to some errors happening or
     at the request of users.

     Arguments:
     'mode: COLOMode'
          report COLO mode when COLO exited.
     'reason: COLOExitReason'
          describes the reason for the COLO exit.

     Since: 3.1

     Example:
          <- { "timestamp": {"seconds": 2032141960, "microseconds": 417172},
               "event": "COLO_EXIT", "data": {"mode": "primary", "reason": "request" } }

 -- Enum: COLOExitReason

     The reason for a COLO exit.

     Values:
     'none'
          failover has never happened.  This state does not occur in the
          COLO_EXIT event, and is only visible in the result of
          query-colo-status.
     'request'
          COLO exit is due to an external request.
     'error'
          COLO exit is due to an internal error.
     'processing'
          COLO is currently handling a failover (since 4.0).

     Since: 3.1

 -- Command: x-colo-lost-heartbeat

     Tell qemu that heartbeat is lost, request it to do takeover
     procedures.  If this command is sent to the PVM, the Primary side
     will exit COLO mode.  If sent to the Secondary, the Secondary side
     will run failover work, then takes over server operation to become
     the service VM.

     Since: 2.8

     Example:
          -> { "execute": "x-colo-lost-heartbeat" }
          <- { "return": {} }

 -- Command: migrate_cancel

     Cancel the current executing migration process.

     Returns: nothing on success

     Notes: This command succeeds even if there is no migration process
     running.

     Since: 0.14.0

     Example:
          -> { "execute": "migrate_cancel" }
          <- { "return": {} }

 -- Command: migrate-continue

     Continue migration when it's in a paused state.

     Arguments:
     'state: MigrationStatus'
          The state the migration is currently expected to be in

     Returns: nothing on success

     Since: 2.11

     Example:
          -> { "execute": "migrate-continue" , "arguments":
               { "state": "pre-switchover" } }
          <- { "return": {} }

 -- Command: migrate_set_downtime

     Set maximum tolerated downtime for migration.

     Arguments:
     'value: number'
          maximum downtime in seconds

     Returns: nothing on success

     Notes: This command is deprecated in favor of
     'migrate-set-parameters'

     Since: 0.14.0

     Example:
          -> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } }
          <- { "return": {} }

 -- Command: migrate_set_speed

     Set maximum speed for migration.

     Arguments:
     'value: int'
          maximum speed in bytes per second.

     Returns: nothing on success

     Notes: This command is deprecated in favor of
     'migrate-set-parameters'

     Since: 0.14.0

     Example:
          -> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } }
          <- { "return": {} }

 -- Command: migrate-set-cache-size

     Set cache size to be used by XBZRLE migration

     Arguments:
     'value: int'
          cache size in bytes
     The size will be rounded down to the nearest power of 2.  The cache
     size can be modified before and during ongoing migration

     Returns: nothing on success

     Notes: This command is deprecated in favor of
     'migrate-set-parameters'

     Since: 1.2

     Example:
          -> { "execute": "migrate-set-cache-size",
               "arguments": { "value": 536870912 } }
          <- { "return": {} }

 -- Command: query-migrate-cache-size

     Query migration XBZRLE cache size

     Returns: XBZRLE cache size in bytes

     Notes: This command is deprecated in favor of
     'query-migrate-parameters'

     Since: 1.2

     Example:
          -> { "execute": "query-migrate-cache-size" }
          <- { "return": 67108864 }

 -- Command: migrate

     Migrates the current running guest to another Virtual Machine.

     Arguments:
     'uri: string'
          the Uniform Resource Identifier of the destination VM
     'blk: boolean' (optional)
          do block migration (full disk copy)
     'inc: boolean' (optional)
          incremental disk copy migration
     'detach: boolean' (optional)
          this argument exists only for compatibility reasons and is
          ignored by QEMU
     'resume: boolean' (optional)
          resume one paused migration, default "off".  (since 3.0)

     Returns: nothing on success

     Since: 0.14.0

     Notes:
       1. The 'query-migrate' command should be used to check
          migration's progress and final result (this information is
          provided by the 'status' member)

       2. All boolean arguments default to false

       3. The user Monitor's "detach" argument is invalid in QMP and
          should not be used

     Example:
          -> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } }
          <- { "return": {} }

 -- Command: migrate-incoming

     Start an incoming migration, the qemu must have been started with
     -incoming defer

     Arguments:
     'uri: string'
          The Uniform Resource Identifier identifying the source or
          address to listen on

     Returns: nothing on success

     Since: 2.3

     Notes:
       1. It's a bad idea to use a string for the uri, but it needs to
          stay compatible with -incoming and the format of the uri is
          already exposed above libvirt.

       2. QEMU must be started with -incoming defer to allow
          migrate-incoming to be used.

       3. The uri format is the same as for -incoming

     Example:
          -> { "execute": "migrate-incoming",
               "arguments": { "uri": "tcp::4446" } }
          <- { "return": {} }

 -- Command: xen-save-devices-state

     Save the state of all devices to file.  The RAM and the block
     devices of the VM are not saved by this command.

     Arguments:
     'filename: string'
          the file to save the state of the devices to as binary data.
          See xen-save-devices-state.txt for a description of the binary
          format.
     'live: boolean' (optional)
          Optional argument to ask QEMU to treat this command as part of
          a live migration.  Default to true.  (since 2.11)

     Returns: Nothing on success

     Since: 1.1

     Example:
          -> { "execute": "xen-save-devices-state",
               "arguments": { "filename": "/tmp/save" } }
          <- { "return": {} }

 -- Command: xen-set-replication

     Enable or disable replication.

     Arguments:
     'enable: boolean'
          true to enable, false to disable.
     'primary: boolean'
          true for primary or false for secondary.
     'failover: boolean' (optional)
          true to do failover, false to stop.  but cannot be specified
          if 'enable' is true.  default value is false.

     Returns: nothing.

     Example:
          -> { "execute": "xen-set-replication",
               "arguments": {"enable": true, "primary": false} }
          <- { "return": {} }

     Since: 2.9

     If: 'defined(CONFIG_REPLICATION)'

 -- Object: ReplicationStatus

     The result format for 'query-xen-replication-status'.

     Members:
     'error: boolean'
          true if an error happened, false if replication is normal.
     'desc: string' (optional)
          the human readable error description string, when 'error' is
          'true'.

     Since: 2.9

     If: 'defined(CONFIG_REPLICATION)'

 -- Command: query-xen-replication-status

     Query replication status while the vm is running.

     Returns: A 'ReplicationResult' object showing the status.

     Example:
          -> { "execute": "query-xen-replication-status" }
          <- { "return": { "error": false } }

     Since: 2.9

     If: 'defined(CONFIG_REPLICATION)'

 -- Command: xen-colo-do-checkpoint

     Xen uses this command to notify replication to trigger a
     checkpoint.

     Returns: nothing.

     Example:
          -> { "execute": "xen-colo-do-checkpoint" }
          <- { "return": {} }

     Since: 2.9

     If: 'defined(CONFIG_REPLICATION)'

 -- Object: COLOStatus

     The result format for 'query-colo-status'.

     Members:
     'mode: COLOMode'
          COLO running mode.  If COLO is running, this field will return
          'primary' or 'secondary'.
     'last-mode: COLOMode'
          COLO last running mode.  If COLO is running, this field will
          return same like mode field, after failover we can use this
          field to get last colo mode.  (since 4.0)
     'reason: COLOExitReason'
          describes the reason for the COLO exit.

     Since: 3.1

 -- Command: query-colo-status

     Query COLO status while the vm is running.

     Returns: A 'COLOStatus' object showing the status.

     Example:
          -> { "execute": "query-colo-status" }
          <- { "return": { "mode": "primary", "reason": "request" } }

     Since: 3.1

 -- Command: migrate-recover

     Provide a recovery migration stream URI.

     Arguments:
     'uri: string'
          the URI to be used for the recovery of migration stream.

     Returns: nothing.

     Example:
          -> { "execute": "migrate-recover",
               "arguments": { "uri": "tcp:192.168.1.200:12345" } }
          <- { "return": {} }

     Since: 3.0

 -- Command: migrate-pause

     Pause a migration.  Currently it only supports postcopy.

     Returns: nothing.

     Example:
          -> { "execute": "migrate-pause" }
          <- { "return": {} }

     Since: 3.0

 -- Event: UNPLUG_PRIMARY

     Emitted from source side of a migration when migration state is
     WAIT_UNPLUG. Device was unplugged by guest operating system.
     Device resources in QEMU are kept on standby to be able to re-plug
     it in case of migration failure.

     Arguments:
     'device-id: string'
          QEMU device id of the unplugged device

     Since: 4.2

     Example:
          {"event": "UNPLUG_PRIMARY", "data": {"device-id": "hostdev0"} }

1.18 Transactions
=================

 -- Object: Abort

     This action can be used to test transaction failure.

     Since: 1.6

 -- Enum: ActionCompletionMode

     An enumeration of Transactional completion modes.

     Values:
     'individual'
          Do not attempt to cancel any other Actions if any Actions fail
          after the Transaction request succeeds.  All Actions that can
          complete successfully will do so without waiting on others.
          This is the default.
     'grouped'
          If any Action fails after the Transaction succeeds, cancel all
          Actions.  Actions do not complete until all Actions are ready
          to complete.  May be rejected by Actions that do not support
          this completion mode.

     Since: 2.5

 -- Object: TransactionAction

     A discriminated record of operations that can be performed with
     'transaction'.  Action 'type' can be:

        - 'abort': since 1.6
        - 'block-dirty-bitmap-add': since 2.5
        - 'block-dirty-bitmap-remove': since 4.2
        - 'block-dirty-bitmap-clear': since 2.5
        - 'block-dirty-bitmap-enable': since 4.0
        - 'block-dirty-bitmap-disable': since 4.0
        - 'block-dirty-bitmap-merge': since 4.0
        - 'blockdev-backup': since 2.3
        - 'blockdev-snapshot': since 2.5
        - 'blockdev-snapshot-internal-sync': since 1.7
        - 'blockdev-snapshot-sync': since 1.1
        - 'drive-backup': since 1.6

     Members:
     'type'
          One of "abort", "block-dirty-bitmap-add",
          "block-dirty-bitmap-remove", "block-dirty-bitmap-clear",
          "block-dirty-bitmap-enable", "block-dirty-bitmap-disable",
          "block-dirty-bitmap-merge", "blockdev-backup",
          "blockdev-snapshot", "blockdev-snapshot-internal-sync",
          "blockdev-snapshot-sync", "drive-backup"
     'data: Abort' when 'type' is "abort"
     'data: BlockDirtyBitmapAdd' when 'type' is "block-dirty-bitmap-add"
     'data: BlockDirtyBitmap' when 'type' is "block-dirty-bitmap-remove"
     'data: BlockDirtyBitmap' when 'type' is "block-dirty-bitmap-clear"
     'data: BlockDirtyBitmap' when 'type' is "block-dirty-bitmap-enable"
     'data: BlockDirtyBitmap' when 'type' is "block-dirty-bitmap-disable"
     'data: BlockDirtyBitmapMerge' when 'type' is "block-dirty-bitmap-merge"
     'data: BlockdevBackup' when 'type' is "blockdev-backup"
     'data: BlockdevSnapshot' when 'type' is "blockdev-snapshot"
     'data: BlockdevSnapshotInternal' when 'type' is "blockdev-snapshot-internal-sync"
     'data: BlockdevSnapshotSync' when 'type' is "blockdev-snapshot-sync"
     'data: DriveBackup' when 'type' is "drive-backup"

     Since: 1.1

 -- Object: TransactionProperties

     Optional arguments to modify the behavior of a Transaction.

     Members:
     'completion-mode: ActionCompletionMode' (optional)
          Controls how jobs launched asynchronously by Actions will
          complete or fail as a group.  See 'ActionCompletionMode' for
          details.

     Since: 2.5

 -- Command: transaction

     Executes a number of transactionable QMP commands atomically.  If
     any operation fails, then the entire set of actions will be
     abandoned and the appropriate error returned.

     For external snapshots, the dictionary contains the device, the
     file to use for the new snapshot, and the format.  The default
     format, if not specified, is qcow2.

     Each new snapshot defaults to being created by QEMU (wiping any
     contents if the file already exists), but it is also possible to
     reuse an externally-created file.  In the latter case, you should
     ensure that the new image file has the same contents as the current
     one; QEMU cannot perform any meaningful check.  Typically this is
     achieved by using the current image file as the backing file for
     the new image.

     On failure, the original disks pre-snapshot attempt will be used.

     For internal snapshots, the dictionary contains the device and the
     snapshot's name.  If an internal snapshot matching name already
     exists, the request will be rejected.  Only some image formats
     support it, for example, qcow2, rbd, and sheepdog.

     On failure, qemu will try delete the newly created internal
     snapshot in the transaction.  When an I/O error occurs during
     deletion, the user needs to fix it later with qemu-img or other
     command.

     Arguments:
     'actions: array of TransactionAction'
          List of 'TransactionAction'; information needed for the
          respective operations.
     'properties: TransactionProperties' (optional)
          structure of additional options to control the execution of
          the transaction.  See 'TransactionProperties' for additional
          detail.

     Returns: nothing on success

     Errors depend on the operations of the transaction

     Note: The transaction aborts on the first failure.  Therefore,
     there will be information on only one failed operation returned in
     an error condition, and subsequent actions will not have been
     attempted.

     Since: 1.1

     Example:
          -> { "execute": "transaction",
               "arguments": { "actions": [
                   { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd0",
                                               "snapshot-file": "/some/place/my-image",
                                               "format": "qcow2" } },
                   { "type": "blockdev-snapshot-sync", "data" : { "node-name": "myfile",
                                               "snapshot-file": "/some/place/my-image2",
                                               "snapshot-node-name": "node3432",
                                               "mode": "existing",
                                               "format": "qcow2" } },
                   { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd1",
                                               "snapshot-file": "/some/place/my-image2",
                                               "mode": "existing",
                                               "format": "qcow2" } },
                   { "type": "blockdev-snapshot-internal-sync", "data" : {
                                               "device": "ide-hd2",
                                               "name": "snapshot0" } } ] } }
          <- { "return": {} }

1.19 Tracing
============

 -- Enum: TraceEventState

     State of a tracing event.

     Values:
     'unavailable'
          The event is statically disabled.
     'disabled'
          The event is dynamically disabled.
     'enabled'
          The event is dynamically enabled.

     Since: 2.2

 -- Object: TraceEventInfo

     Information of a tracing event.

     Members:
     'name: string'
          Event name.
     'state: TraceEventState'
          Tracing state.
     'vcpu: boolean'
          Whether this is a per-vCPU event (since 2.7).
     An event is per-vCPU if it has the "vcpu" property in the
     "trace-events" files.

     Since: 2.2

 -- Command: trace-event-get-state

     Query the state of events.

     Arguments:
     'name: string'
          Event name pattern (case-sensitive glob).
     'vcpu: int' (optional)
          The vCPU to query (any by default; since 2.7).

     Returns: a list of 'TraceEventInfo' for the matching events

     An event is returned if:
        - its name matches the 'name' pattern, and
        - if 'vcpu' is given, the event has the "vcpu" property.

     Therefore, if 'vcpu' is given, the operation will only match
     per-vCPU events, returning their state on the specified vCPU.
     Special case: if 'name' is an exact match, 'vcpu' is given and the
     event does not have the "vcpu" property, an error is returned.

     Since: 2.2

     Example:
          -> { "execute": "trace-event-get-state",
               "arguments": { "name": "qemu_memalign" } }
          <- { "return": [ { "name": "qemu_memalign", "state": "disabled" } ] }

 -- Command: trace-event-set-state

     Set the dynamic tracing state of events.

     Arguments:
     'name: string'
          Event name pattern (case-sensitive glob).
     'enable: boolean'
          Whether to enable tracing.
     'ignore-unavailable: boolean' (optional)
          Do not match unavailable events with 'name'.
     'vcpu: int' (optional)
          The vCPU to act upon (all by default; since 2.7).
     An event's state is modified if:
        - its name matches the 'name' pattern, and
        - if 'vcpu' is given, the event has the "vcpu" property.

     Therefore, if 'vcpu' is given, the operation will only match
     per-vCPU events, setting their state on the specified vCPU. Special
     case: if 'name' is an exact match, 'vcpu' is given and the event
     does not have the "vcpu" property, an error is returned.

     Since: 2.2

     Example:
          -> { "execute": "trace-event-set-state",
               "arguments": { "name": "qemu_memalign", "enable": "true" } }
          <- { "return": {} }

1.20 QMP introspection
======================

 -- Command: query-qmp-schema

     Command query-qmp-schema exposes the QMP wire ABI as an array of
     SchemaInfo.  This lets QMP clients figure out what commands and
     events are available in this QEMU, and their parameters and
     results.

     However, the SchemaInfo can't reflect all the rules and
     restrictions that apply to QMP. It's interface introspection
     (figuring out what's there), not interface specification.  The
     specification is in the QAPI schema.

     Furthermore, while we strive to keep the QMP wire format
     backwards-compatible across qemu versions, the introspection output
     is not guaranteed to have the same stability.  For example, one
     version of qemu may list an object member as an optional
     non-variant, while another lists the same member only through the
     object's variants; or the type of a member may change from a
     generic string into a specific enum or from one specific type into
     an alternate that includes the original type alongside something
     else.

     Returns: array of 'SchemaInfo', where each element describes an
     entity in the ABI: command, event, type, ...

     The order of the various SchemaInfo is unspecified; however, all
     names are guaranteed to be unique (no name will be duplicated with
     different meta-types).

     Note: the QAPI schema is also used to help define *internal*
     interfaces, by defining QAPI types.  These are not part of the QMP
     wire ABI, and therefore not returned by this command.

     Since: 2.5

 -- Enum: SchemaMetaType

     This is a 'SchemaInfo''s meta type, i.e.  the kind of entity it
     describes.

     Values:
     'builtin'
          a predefined type such as 'int' or 'bool'.
     'enum'
          an enumeration type
     'array'
          an array type
     'object'
          an object type (struct or union)
     'alternate'
          an alternate type
     'command'
          a QMP command
     'event'
          a QMP event

     Since: 2.5

 -- Object: SchemaInfo

     Members:
     'name: string'
          the entity's name, inherited from 'base'.  The SchemaInfo is
          always referenced by this name.  Commands and events have the
          name defined in the QAPI schema.  Unlike command and event
          names, type names are not part of the wire ABI. Consequently,
          type names are meaningless strings here, although they are
          still guaranteed unique regardless of 'meta-type'.
     'meta-type: SchemaMetaType'
          the entity's meta type, inherited from 'base'.
     The members of 'SchemaInfoBuiltin' when 'meta-type' is "builtin"
     The members of 'SchemaInfoEnum' when 'meta-type' is "enum"
     The members of 'SchemaInfoArray' when 'meta-type' is "array"
     The members of 'SchemaInfoObject' when 'meta-type' is "object"
     The members of 'SchemaInfoAlternate' when 'meta-type' is "alternate"
     The members of 'SchemaInfoCommand' when 'meta-type' is "command"
     The members of 'SchemaInfoEvent' when 'meta-type' is "event"
     Additional members depend on the value of 'meta-type'.

     Since: 2.5

 -- Object: SchemaInfoBuiltin

     Additional SchemaInfo members for meta-type 'builtin'.

     Members:
     'json-type: JSONType'
          the JSON type used for this type on the wire.

     Since: 2.5

 -- Enum: JSONType

     The four primitive and two structured types according to RFC 8259
     section 1, plus 'int' (split off 'number'), plus the obvious top
     type 'value'.

     Values:
     'string'
          Not documented
     'number'
          Not documented
     'int'
          Not documented
     'boolean'
          Not documented
     'null'
          Not documented
     'object'
          Not documented
     'array'
          Not documented
     'value'
          Not documented

     Since: 2.5

 -- Object: SchemaInfoEnum

     Additional SchemaInfo members for meta-type 'enum'.

     Members:
     'values: array of string'
          the enumeration type's values, in no particular order.
     Values of this type are JSON string on the wire.

     Since: 2.5

 -- Object: SchemaInfoArray

     Additional SchemaInfo members for meta-type 'array'.

     Members:
     'element-type: string'
          the array type's element type.
     Values of this type are JSON array on the wire.

     Since: 2.5

 -- Object: SchemaInfoObject

     Additional SchemaInfo members for meta-type 'object'.

     Members:
     'members: array of SchemaInfoObjectMember'
          the object type's (non-variant) members, in no particular
          order.
     'tag: string' (optional)
          the name of the member serving as type tag.  An element of
          'members' with this name must exist.
     'variants: array of SchemaInfoObjectVariant' (optional)
          variant members, i.e.  additional members that depend on the
          type tag's value.  Present exactly when 'tag' is present.  The
          variants are in no particular order, and may even differ from
          the order of the values of the enum type of the 'tag'.
     'features: array of string' (optional)
          names of features associated with the type, in no particular
          order.  (since: 4.1)
     Values of this type are JSON object on the wire.

     Since: 2.5

 -- Object: SchemaInfoObjectMember

     An object member.

     Members:
     'name: string'
          the member's name, as defined in the QAPI schema.
     'type: string'
          the name of the member's type.
     'default: value' (optional)
          default when used as command parameter.  If absent, the
          parameter is mandatory.  If present, the value must be null.
          The parameter is optional, and behavior when it's missing is
          not specified here.  Future extension: if present and
          non-null, the parameter is optional, and defaults to this
          value.

     Since: 2.5

 -- Object: SchemaInfoObjectVariant

     The variant members for a value of the type tag.

     Members:
     'case: string'
          a value of the type tag.
     'type: string'
          the name of the object type that provides the variant members
          when the type tag has value 'case'.

     Since: 2.5

 -- Object: SchemaInfoAlternate

     Additional SchemaInfo members for meta-type 'alternate'.

     Members:
     'members: array of SchemaInfoAlternateMember'
          the alternate type's members, in no particular order.  The
          members' wire encoding is distinct, see
          docs/devel/qapi-code-gen.txt section Alternate types.
     On the wire, this can be any of the members.

     Since: 2.5

 -- Object: SchemaInfoAlternateMember

     An alternate member.

     Members:
     'type: string'
          the name of the member's type.

     Since: 2.5

 -- Object: SchemaInfoCommand

     Additional SchemaInfo members for meta-type 'command'.

     Members:
     'arg-type: string'
          the name of the object type that provides the command's
          parameters.
     'ret-type: string'
          the name of the command's result type.
     'allow-oob: boolean' (optional)
          whether the command allows out-of-band execution, defaults to
          false (Since: 2.12)
     'features: array of string' (optional)
          names of features associated with the command, in no
          particular order.  (since 4.2)

     TODO: 'success-response' (currently irrelevant, because it's QGA,
     not QMP)

     Since: 2.5

 -- Object: SchemaInfoEvent

     Additional SchemaInfo members for meta-type 'event'.

     Members:
     'arg-type: string'
          the name of the object type that provides the event's
          parameters.

     Since: 2.5

1.21 QEMU Object Model (QOM)
============================

 -- Object: ObjectPropertyInfo

     Members:
     'name: string'
          the name of the property
     'type: string'
          the type of the property.  This will typically come in one of
          four forms:

          1) A primitive type such as 'u8', 'u16', 'bool', 'str', or
          'double'.  These types are mapped to the appropriate JSON
          type.

          2) A child type in the form 'child<subtype>' where subtype is
          a qdev device type name.  Child properties create the
          composition tree.

          3) A link type in the form 'link<subtype>' where subtype is a
          qdev device type name.  Link properties form the device model
          graph.
     'description: string' (optional)
          if specified, the description of the property.

     Since: 1.2

 -- Command: qom-list

     This command will list any properties of a object given a path in
     the object model.

     Arguments:
     'path: string'
          the path within the object model.  See 'qom-get' for a
          description of this parameter.

     Returns: a list of 'ObjectPropertyInfo' that describe the
     properties of the object.

     Since: 1.2

     Example:
          -> { "execute": "qom-list",
               "arguments": { "path": "/chardevs" } }
          <- { "return": [ { "name": "type", "type": "string" },
                           { "name": "parallel0", "type": "child<chardev-vc>" },
                           { "name": "serial0", "type": "child<chardev-vc>" },
                           { "name": "mon0", "type": "child<chardev-stdio>" } ] }

 -- Command: qom-get

     This command will get a property from a object model path and
     return the value.

     Arguments:
     'path: string'
          The path within the object model.  There are two forms of
          supported paths-absolute and partial paths.

          Absolute paths are derived from the root object and can follow
          child<> or link<> properties.  Since they can follow link<>
          properties, they can be arbitrarily long.  Absolute paths look
          like absolute filenames and are prefixed with a leading slash.

          Partial paths look like relative filenames.  They do not begin
          with a prefix.  The matching rules for partial paths are
          subtle but designed to make specifying objects easy.  At each
          level of the composition tree, the partial path is matched as
          an absolute path.  The first match is not returned.  At least
          two matches are searched for.  A successful result is only
          returned if only one match is found.  If more than one match
          is found, a flag is return to indicate that the match was
          ambiguous.
     'property: string'
          The property name to read

     Returns: The property value.  The type depends on the property
     type.  child<> and link<> properties are returned as #str
     pathnames.  All integer property types (u8, u16, etc) are returned
     as #int.

     Since: 1.2

     Example:
          1. Use absolute path

          -> { "execute": "qom-get",
               "arguments": { "path": "/machine/unattached/device[0]",
                              "property": "hotplugged" } }
          <- { "return": false }

          2. Use partial path

          -> { "execute": "qom-get",
               "arguments": { "path": "unattached/sysbus",
                              "property": "type" } }
          <- { "return": "System" }

 -- Command: qom-set

     This command will set a property from a object model path.

     Arguments:
     'path: string'
          see 'qom-get' for a description of this parameter
     'property: string'
          the property name to set
     'value: value'
          a value who's type is appropriate for the property type.  See
          'qom-get' for a description of type mapping.

     Since: 1.2

     Example:
          -> { "execute": "qom-set",
               "arguments": { "path": "/machine",
                              "property": "graphics",
                              "value": false } }
          <- { "return": {} }

 -- Object: ObjectTypeInfo

     This structure describes a search result from 'qom-list-types'

     Members:
     'name: string'
          the type name found in the search
     'abstract: boolean' (optional)
          the type is abstract and can't be directly instantiated.
          Omitted if false.  (since 2.10)
     'parent: string' (optional)
          Name of parent type, if any (since 2.10)

     Since: 1.1

 -- Command: qom-list-types

     This command will return a list of types given search parameters

     Arguments:
     'implements: string' (optional)
          if specified, only return types that implement this type name
     'abstract: boolean' (optional)
          if true, include abstract types in the results

     Returns: a list of 'ObjectTypeInfo' or an empty list if no results
     are found

     Since: 1.1

 -- Command: qom-list-properties

     List properties associated with a QOM object.

     Arguments:
     'typename: string'
          the type name of an object

     Note: objects can create properties at runtime, for example to
     describe links between different devices and/or objects.  These
     properties are not included in the output of this command.

     Returns: a list of ObjectPropertyInfo describing object properties

     Since: 2.12

 -- Command: object-add

     Create a QOM object.

     Arguments:
     'qom-type: string'
          the class name for the object to be created
     'id: string'
          the name of the new object
     'props: value' (optional)
          a dictionary of properties to be passed to the backend

     Returns: Nothing on success Error if 'qom-type' is not a valid
     class name

     Since: 2.0

     Example:
          -> { "execute": "object-add",
               "arguments": { "qom-type": "rng-random", "id": "rng1",
                              "props": { "filename": "/dev/hwrng" } } }
          <- { "return": {} }

 -- Command: object-del

     Remove a QOM object.

     Arguments:
     'id: string'
          the name of the QOM object to remove

     Returns: Nothing on success Error if 'id' is not a valid id for a
     QOM object

     Since: 2.0

     Example:
          -> { "execute": "object-del", "arguments": { "id": "rng1" } }
          <- { "return": {} }

1.22 Device infrastructure (qdev)
=================================

 -- Command: device-list-properties

     List properties associated with a device.

     Arguments:
     'typename: string'
          the type name of a device

     Returns: a list of ObjectPropertyInfo describing a devices
     properties

     Note: objects can create properties at runtime, for example to
     describe links between different devices and/or objects.  These
     properties are not included in the output of this command.

     Since: 1.2

 -- Command: device_add

     Arguments:
     'driver: string'
          the name of the new device's driver
     'bus: string' (optional)
          the device's parent bus (device tree path)
     'id: string' (optional)
          the device's ID, must be unique
     Additional arguments depend on the type.

     Add a device.

     Notes:
       1. For detailed information about this command, please refer to
          the 'docs/qdev-device-use.txt' file.

       2. It's possible to list device properties by running QEMU with
          the "-device DEVICE,help" command-line argument, where DEVICE
          is the device's name

     Example:
          -> { "execute": "device_add",
               "arguments": { "driver": "e1000", "id": "net1",
                              "bus": "pci.0",
                              "mac": "52:54:00:12:34:56" } }
          <- { "return": {} }

     TODO: This command effectively bypasses QAPI completely due to its
     "additional arguments" business.  It shouldn't have been added to
     the schema in this form.  It should be qapified properly, or
     replaced by a properly qapified command.

     Since: 0.13

 -- Command: device_del

     Remove a device from a guest

     Arguments:
     'id: string'
          the device's ID or QOM path

     Returns: Nothing on success If 'id' is not a valid device,
     DeviceNotFound

     Notes: When this command completes, the device may not be removed
     from the guest.  Hot removal is an operation that requires guest
     cooperation.  This command merely requests that the guest begin the
     hot removal process.  Completion of the device removal process is
     signaled with a DEVICE_DELETED event.  Guest reset will
     automatically complete removal for all devices.

     Since: 0.14.0

     Example:
          -> { "execute": "device_del",
               "arguments": { "id": "net1" } }
          <- { "return": {} }

          -> { "execute": "device_del",
               "arguments": { "id": "/machine/peripheral-anon/device[0]" } }
          <- { "return": {} }

 -- Event: DEVICE_DELETED

     Emitted whenever the device removal completion is acknowledged by
     the guest.  At this point, it's safe to reuse the specified device
     ID. Device removal can be initiated by the guest or by HMP/QMP
     commands.

     Arguments:
     'device: string' (optional)
          device name
     'path: string'
          device path

     Since: 1.5

     Example:
          <- { "event": "DEVICE_DELETED",
               "data": { "device": "virtio-net-pci-0",
                         "path": "/machine/peripheral/virtio-net-pci-0" },
               "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }

1.23 Machines
=============

 -- Enum: SysEmuTarget

     The comprehensive enumeration of QEMU system emulation ("softmmu")
     targets.  Run "./configure -help" in the project root directory,
     and look for the *-softmmu targets near the "-target-list" option.
     The individual target constants are not documented here, for the
     time being.

     Values:
     'aarch64'
          Not documented
     'alpha'
          Not documented
     'arm'
          Not documented
     'cris'
          Not documented
     'hppa'
          Not documented
     'i386'
          Not documented
     'lm32'
          Not documented
     'm68k'
          Not documented
     'microblaze'
          Not documented
     'microblazeel'
          Not documented
     'mips'
          Not documented
     'mips64'
          Not documented
     'mips64el'
          Not documented
     'mipsel'
          Not documented
     'moxie'
          Not documented
     'nios2'
          Not documented
     'or1k'
          Not documented
     'ppc'
          Not documented
     'ppc64'
          Not documented
     'riscv32'
          Not documented
     'riscv64'
          Not documented
     's390x'
          Not documented
     'sh4'
          Not documented
     'sh4eb'
          Not documented
     'sparc'
          Not documented
     'sparc64'
          Not documented
     'tricore'
          Not documented
     'unicore32'
          Not documented
     'x86_64'
          Not documented
     'xtensa'
          Not documented
     'xtensaeb'
          Not documented

     Notes: The resulting QMP strings can be appended to the
     "qemu-system-" prefix to produce the corresponding QEMU executable
     name.  This is true even for "qemu-system-x86_64".

     ppcemb: dropped in 3.1

     Since: 3.0

 -- Enum: CpuInfoArch

     An enumeration of cpu types that enable additional information
     during 'query-cpus' and 'query-cpus-fast'.

     Values:
     's390'
          since 2.12
     'riscv'
          since 2.12
     'x86'
          Not documented
     'sparc'
          Not documented
     'ppc'
          Not documented
     'mips'
          Not documented
     'tricore'
          Not documented
     'other'
          Not documented

     Since: 2.6

 -- Object: CpuInfo

     Information about a virtual CPU

     Members:
     'CPU: int'
          the index of the virtual CPU
     'current: boolean'
          this only exists for backwards compatibility and should be
          ignored
     'halted: boolean'
          true if the virtual CPU is in the halt state.  Halt usually
          refers to a processor specific low power mode.
     'qom_path: string'
          path to the CPU object in the QOM tree (since 2.4)
     'thread_id: int'
          ID of the underlying host thread
     'props: CpuInstanceProperties' (optional)
          properties describing to which node/socket/core/thread virtual
          CPU belongs to, provided if supported by board (since 2.10)
     'arch: CpuInfoArch'
          architecture of the cpu, which determines which additional
          fields will be listed (since 2.6)
     The members of 'CpuInfoX86' when 'arch' is "x86"
     The members of 'CpuInfoSPARC' when 'arch' is "sparc"
     The members of 'CpuInfoPPC' when 'arch' is "ppc"
     The members of 'CpuInfoMIPS' when 'arch' is "mips"
     The members of 'CpuInfoTricore' when 'arch' is "tricore"
     The members of 'CpuInfoS390' when 'arch' is "s390"
     The members of 'CpuInfoRISCV' when 'arch' is "riscv"

     Since: 0.14.0

     Notes: 'halted' is a transient state that changes frequently.  By
     the time the data is sent to the client, the guest may no longer be
     halted.

 -- Object: CpuInfoX86

     Additional information about a virtual i386 or x86_64 CPU

     Members:
     'pc: int'
          the 64-bit instruction pointer

     Since: 2.6

 -- Object: CpuInfoSPARC

     Additional information about a virtual SPARC CPU

     Members:
     'pc: int'
          the PC component of the instruction pointer
     'npc: int'
          the NPC component of the instruction pointer

     Since: 2.6

 -- Object: CpuInfoPPC

     Additional information about a virtual PPC CPU

     Members:
     'nip: int'
          the instruction pointer

     Since: 2.6

 -- Object: CpuInfoMIPS

     Additional information about a virtual MIPS CPU

     Members:
     'PC: int'
          the instruction pointer

     Since: 2.6

 -- Object: CpuInfoTricore

     Additional information about a virtual Tricore CPU

     Members:
     'PC: int'
          the instruction pointer

     Since: 2.6

 -- Object: CpuInfoRISCV

     Additional information about a virtual RISCV CPU

     Members:
     'pc: int'
          the instruction pointer
     Since 2.12

 -- Enum: CpuS390State

     An enumeration of cpu states that can be assumed by a virtual S390
     CPU

     Values:
     'uninitialized'
          Not documented
     'stopped'
          Not documented
     'check-stop'
          Not documented
     'operating'
          Not documented
     'load'
          Not documented

     Since: 2.12

 -- Object: CpuInfoS390

     Additional information about a virtual S390 CPU

     Members:
     'cpu-state: CpuS390State'
          the virtual CPU's state

     Since: 2.12

 -- Command: query-cpus

     Returns a list of information about each virtual CPU.

     This command causes vCPU threads to exit to userspace, which causes
     a small interruption to guest CPU execution.  This will have a
     negative impact on realtime guests and other latency sensitive
     guest workloads.  It is recommended to use 'query-cpus-fast'
     instead of this command to avoid the vCPU interruption.

     Returns: a list of 'CpuInfo' for each virtual CPU

     Since: 0.14.0

     Example:
          -> { "execute": "query-cpus" }
          <- { "return": [
                   {
                      "CPU":0,
                      "current":true,
                      "halted":false,
                      "qom_path":"/machine/unattached/device[0]",
                      "arch":"x86",
                      "pc":3227107138,
                      "thread_id":3134
                   },
                   {
                      "CPU":1,
                      "current":false,
                      "halted":true,
                      "qom_path":"/machine/unattached/device[2]",
                      "arch":"x86",
                      "pc":7108165,
                      "thread_id":3135
                   }
                ]
             }

     Notes: This interface is deprecated (since 2.12.0), and it is
     strongly recommended that you avoid using it.  Use
     'query-cpus-fast' to obtain information about virtual CPUs.

 -- Object: CpuInfoFast

     Information about a virtual CPU

     Members:
     'cpu-index: int'
          index of the virtual CPU
     'qom-path: string'
          path to the CPU object in the QOM tree
     'thread-id: int'
          ID of the underlying host thread
     'props: CpuInstanceProperties' (optional)
          properties describing to which node/socket/core/thread virtual
          CPU belongs to, provided if supported by board
     'arch: CpuInfoArch'
          base architecture of the cpu; deprecated since 3.0.0 in favor
          of 'target'
     'target: SysEmuTarget'
          the QEMU system emulation target, which determines which
          additional fields will be listed (since 3.0)
     The members of 'CpuInfoS390' when 'target' is "s390x"

     Since: 2.12

 -- Command: query-cpus-fast

     Returns information about all virtual CPUs.  This command does not
     incur a performance penalty and should be used in production
     instead of query-cpus.

     Returns: list of 'CpuInfoFast'

     Since: 2.12

     Example:
          -> { "execute": "query-cpus-fast" }
          <- { "return": [
                  {
                      "thread-id": 25627,
                      "props": {
                          "core-id": 0,
                          "thread-id": 0,
                          "socket-id": 0
                      },
                      "qom-path": "/machine/unattached/device[0]",
                      "arch":"x86",
                      "target":"x86_64",
                      "cpu-index": 0
                  },
                  {
                      "thread-id": 25628,
                      "props": {
                          "core-id": 0,
                          "thread-id": 0,
                          "socket-id": 1
                      },
                      "qom-path": "/machine/unattached/device[2]",
                      "arch":"x86",
                      "target":"x86_64",
                      "cpu-index": 1
                  }
              ]
          }

 -- Command: cpu-add

     Adds CPU with specified ID.

     Arguments:
     'id: int'
          ID of CPU to be created, valid values [0..max_cpus)

     Returns: Nothing on success

     Since: 1.5

     Note: This command is deprecated.  The 'device_add' command should
     be used instead.  See the 'query-hotpluggable-cpus' command for
     details.

     Example:
          -> { "execute": "cpu-add", "arguments": { "id": 2 } }
          <- { "return": {} }

 -- Object: MachineInfo

     Information describing a machine.

     Members:
     'name: string'
          the name of the machine
     'alias: string' (optional)
          an alias for the machine name
     'is-default: boolean' (optional)
          whether the machine is default
     'cpu-max: int'
          maximum number of CPUs supported by the machine type (since
          1.5.0)
     'hotpluggable-cpus: boolean'
          cpu hotplug via -device is supported (since 2.7.0)
     'numa-mem-supported: boolean'
          true if '-numa node,mem' option is supported by the machine
          type and false otherwise (since 4.1)
     'deprecated: boolean'
          if true, the machine type is deprecated and may be removed in
          future versions of QEMU according to the QEMU deprecation
          policy (since 4.1.0)
     'default-cpu-type: string' (optional)
          default CPU model typename if none is requested via the -cpu
          argument.  (since 4.2)

     Since: 1.2.0

 -- Command: query-machines

     Return a list of supported machines

     Returns: a list of MachineInfo

     Since: 1.2.0

 -- Object: CurrentMachineParams

     Information describing the running machine parameters.

     Members:
     'wakeup-suspend-support: boolean'
          true if the machine supports wake up from suspend

     Since: 4.0

 -- Command: query-current-machine

     Return information on the current virtual machine.

     Returns: CurrentMachineParams

     Since: 4.0

 -- Object: TargetInfo

     Information describing the QEMU target.

     Members:
     'arch: SysEmuTarget'
          the target architecture

     Since: 1.2.0

 -- Command: query-target

     Return information about the target for this QEMU

     Returns: TargetInfo

     Since: 1.2.0

 -- Enum: NumaOptionsType

     Values:
     'node'
          NUMA nodes configuration
     'dist'
          NUMA distance configuration (since 2.10)
     'cpu'
          property based CPU(s) to node mapping (Since: 2.10)
     'hmat-lb'
          memory latency and bandwidth information (Since: 5.0)
     'hmat-cache'
          memory side cache information (Since: 5.0)

     Since: 2.1

 -- Object: NumaOptions

     A discriminated record of NUMA options.  (for OptsVisitor)

     Members:
     'type: NumaOptionsType'
          Not documented
     The members of 'NumaNodeOptions' when 'type' is "node"
     The members of 'NumaDistOptions' when 'type' is "dist"
     The members of 'NumaCpuOptions' when 'type' is "cpu"
     The members of 'NumaHmatLBOptions' when 'type' is "hmat-lb"
     The members of 'NumaHmatCacheOptions' when 'type' is "hmat-cache"

     Since: 2.1

 -- Object: NumaNodeOptions

     Create a guest NUMA node.  (for OptsVisitor)

     Members:
     'nodeid: int' (optional)
          NUMA node ID (increase by 1 from 0 if omitted)
     'cpus: array of int' (optional)
          VCPUs belonging to this node (assign VCPUS round-robin if
          omitted)
     'mem: int' (optional)
          memory size of this node; mutually exclusive with 'memdev'.
          Equally divide total memory among nodes if both 'mem' and
          'memdev' are omitted.
     'memdev: string' (optional)
          memory backend object.  If specified for one node, it must be
          specified for all nodes.
     'initiator: int' (optional)
          defined in ACPI 6.3 Chapter 5.2.27.3 Table 5-145, points to
          the nodeid which has the memory controller responsible for
          this NUMA node.  This field provides additional information as
          to the initiator node that is closest (as in directly
          attached) to this node, and therefore has the best performance
          (since 5.0)

     Since: 2.1

 -- Object: NumaDistOptions

     Set the distance between 2 NUMA nodes.

     Members:
     'src: int'
          source NUMA node.
     'dst: int'
          destination NUMA node.
     'val: int'
          NUMA distance from source node to destination node.  When a
          node is unreachable from another node, set the distance
          between them to 255.

     Since: 2.10

 -- Enum: X86CPURegister32

     A X86 32-bit register

     Values:
     'EAX'
          Not documented
     'EBX'
          Not documented
     'ECX'
          Not documented
     'EDX'
          Not documented
     'ESP'
          Not documented
     'EBP'
          Not documented
     'ESI'
          Not documented
     'EDI'
          Not documented

     Since: 1.5

 -- Object: X86CPUFeatureWordInfo

     Information about a X86 CPU feature word

     Members:
     'cpuid-input-eax: int'
          Input EAX value for CPUID instruction for that feature word
     'cpuid-input-ecx: int' (optional)
          Input ECX value for CPUID instruction for that feature word
     'cpuid-register: X86CPURegister32'
          Output register containing the feature bits
     'features: int'
          value of output register, containing the feature bits

     Since: 1.5

 -- Object: DummyForceArrays

     Not used by QMP; hack to let us use X86CPUFeatureWordInfoList
     internally

     Members:
     'unused: array of X86CPUFeatureWordInfo'
          Not documented

     Since: 2.5

 -- Object: NumaCpuOptions

     Option "-numa cpu" overrides default cpu to node mapping.  It
     accepts the same set of cpu properties as returned by
     query-hotpluggable-cpus[].props, where node-id could be used to
     override default node mapping.

     Members:
     The members of 'CpuInstanceProperties'

     Since: 2.10

 -- Enum: HmatLBMemoryHierarchy

     The memory hierarchy in the System Locality Latency and Bandwidth
     Information Structure of HMAT (Heterogeneous Memory Attribute
     Table)

     For more information about 'HmatLBMemoryHierarchy', see chapter
     5.2.27.4: Table 5-146: Field "Flags" of ACPI 6.3 spec.

     Values:
     'memory'
          the structure represents the memory performance
     'first-level'
          first level of memory side cache
     'second-level'
          second level of memory side cache
     'third-level'
          third level of memory side cache

     Since: 5.0

 -- Enum: HmatLBDataType

     Data type in the System Locality Latency and Bandwidth Information
     Structure of HMAT (Heterogeneous Memory Attribute Table)

     For more information about 'HmatLBDataType', see chapter 5.2.27.4:
     Table 5-146: Field "Data Type" of ACPI 6.3 spec.

     Values:
     'access-latency'
          access latency (nanoseconds)
     'read-latency'
          read latency (nanoseconds)
     'write-latency'
          write latency (nanoseconds)
     'access-bandwidth'
          access bandwidth (Bytes per second)
     'read-bandwidth'
          read bandwidth (Bytes per second)
     'write-bandwidth'
          write bandwidth (Bytes per second)

     Since: 5.0

 -- Object: NumaHmatLBOptions

     Set the system locality latency and bandwidth information between
     Initiator and Target proximity Domains.

     For more information about 'NumaHmatLBOptions', see chapter
     5.2.27.4: Table 5-146 of ACPI 6.3 spec.

     Members:
     'initiator: int'
          the Initiator Proximity Domain.
     'target: int'
          the Target Proximity Domain.
     'hierarchy: HmatLBMemoryHierarchy'
          the Memory Hierarchy.  Indicates the performance of memory or
          side cache.
     'data-type: HmatLBDataType'
          presents the type of data, access/read/write latency or hit
          latency.
     'latency: int' (optional)
          the value of latency from 'initiator' to 'target' proximity
          domain, the latency unit is "ns(nanosecond)".
     'bandwidth: int' (optional)
          the value of bandwidth between 'initiator' and 'target'
          proximity domain, the bandwidth unit is "Bytes per second".

     Since: 5.0

 -- Enum: HmatCacheAssociativity

     Cache associativity in the Memory Side Cache Information Structure
     of HMAT

     For more information of 'HmatCacheAssociativity', see chapter
     5.2.27.5: Table 5-147 of ACPI 6.3 spec.

     Values:
     'none'
          None (no memory side cache in this proximity domain, or cache
          associativity unknown)
     'direct'
          Direct Mapped
     'complex'
          Complex Cache Indexing (implementation specific)

     Since: 5.0

 -- Enum: HmatCacheWritePolicy

     Cache write policy in the Memory Side Cache Information Structure
     of HMAT

     For more information of 'HmatCacheWritePolicy', see chapter
     5.2.27.5: Table 5-147: Field "Cache Attributes" of ACPI 6.3 spec.

     Values:
     'none'
          None (no memory side cache in this proximity domain, or cache
          write policy unknown)
     'write-back'
          Write Back (WB)
     'write-through'
          Write Through (WT)

     Since: 5.0

 -- Object: NumaHmatCacheOptions

     Set the memory side cache information for a given memory domain.

     For more information of 'NumaHmatCacheOptions', see chapter
     5.2.27.5: Table 5-147: Field "Cache Attributes" of ACPI 6.3 spec.

     Members:
     'node-id: int'
          the memory proximity domain to which the memory belongs.
     'size: int'
          the size of memory side cache in bytes.
     'level: int'
          the cache level described in this structure.
     'associativity: HmatCacheAssociativity'
          the cache associativity, none/direct-mapped/complex(complex
          cache indexing).
     'policy: HmatCacheWritePolicy'
          the write policy, none/write-back/write-through.
     'line: int'
          the cache Line size in bytes.

     Since: 5.0

 -- Enum: HostMemPolicy

     Host memory policy types

     Values:
     'default'
          restore default policy, remove any nondefault policy
     'preferred'
          set the preferred host nodes for allocation
     'bind'
          a strict policy that restricts memory allocation to the host
          nodes specified
     'interleave'
          memory allocations are interleaved across the set of host
          nodes specified

     Since: 2.1

 -- Object: Memdev

     Information about memory backend

     Members:
     'id: string' (optional)
          backend's ID if backend has 'id' property (since 2.9)
     'size: int'
          memory backend size
     'merge: boolean'
          enables or disables memory merge support
     'dump: boolean'
          includes memory backend's memory in a core dump or not
     'prealloc: boolean'
          enables or disables memory preallocation
     'host-nodes: array of int'
          host nodes for its memory policy
     'policy: HostMemPolicy'
          memory policy of memory backend

     Since: 2.1

 -- Command: query-memdev

     Returns information for all memory backends.

     Returns: a list of 'Memdev'.

     Since: 2.1

     Example:
          -> { "execute": "query-memdev" }
          <- { "return": [
                 {
                   "id": "mem1",
                   "size": 536870912,
                   "merge": false,
                   "dump": true,
                   "prealloc": false,
                   "host-nodes": [0, 1],
                   "policy": "bind"
                 },
                 {
                   "size": 536870912,
                   "merge": false,
                   "dump": true,
                   "prealloc": true,
                   "host-nodes": [2, 3],
                   "policy": "preferred"
                 }
               ]
             }

 -- Object: CpuInstanceProperties

     List of properties to be used for hotplugging a CPU instance, it
     should be passed by management with device_add command when a CPU
     is being hotplugged.

     Members:
     'node-id: int' (optional)
          NUMA node ID the CPU belongs to
     'socket-id: int' (optional)
          socket number within node/board the CPU belongs to
     'die-id: int' (optional)
          die number within node/board the CPU belongs to (Since 4.1)
     'core-id: int' (optional)
          core number within die the CPU belongs to# 'thread-id': thread
          number within core the CPU belongs to
     'thread-id: int' (optional)
          Not documented

     Note: currently there are 5 properties that could be present but
     management should be prepared to pass through other properties with
     device_add command to allow for future interface extension.  This
     also requires the filed names to be kept in sync with the
     properties passed to -device/device_add.

     Since: 2.7

 -- Object: HotpluggableCPU

     Members:
     'type: string'
          CPU object type for usage with device_add command
     'props: CpuInstanceProperties'
          list of properties to be used for hotplugging CPU
     'vcpus-count: int'
          number of logical VCPU threads 'HotpluggableCPU' provides
     'qom-path: string' (optional)
          link to existing CPU object if CPU is present or omitted if
          CPU is not present.

     Since: 2.7

 -- Command: query-hotpluggable-cpus

     TODO: Better documentation; currently there is none.

     Returns: a list of HotpluggableCPU objects.

     Since: 2.7

     Example:
          For pseries machine type started with -smp 2,cores=2,maxcpus=4 -cpu POWER8:

          -> { "execute": "query-hotpluggable-cpus" }
          <- {"return": [
               { "props": { "core": 8 }, "type": "POWER8-spapr-cpu-core",
                 "vcpus-count": 1 },
               { "props": { "core": 0 }, "type": "POWER8-spapr-cpu-core",
                 "vcpus-count": 1, "qom-path": "/machine/unattached/device[0]"}
             ]}'

          For pc machine type started with -smp 1,maxcpus=2:

          -> { "execute": "query-hotpluggable-cpus" }
          <- {"return": [
               {
                  "type": "qemu64-x86_64-cpu", "vcpus-count": 1,
                  "props": {"core-id": 0, "socket-id": 1, "thread-id": 0}
               },
               {
                  "qom-path": "/machine/unattached/device[0]",
                  "type": "qemu64-x86_64-cpu", "vcpus-count": 1,
                  "props": {"core-id": 0, "socket-id": 0, "thread-id": 0}
               }
             ]}

          For s390x-virtio-ccw machine type started with -smp 1,maxcpus=2 -cpu qemu
          (Since: 2.11):

          -> { "execute": "query-hotpluggable-cpus" }
          <- {"return": [
               {
                  "type": "qemu-s390x-cpu", "vcpus-count": 1,
                  "props": { "core-id": 1 }
               },
               {
                  "qom-path": "/machine/unattached/device[0]",
                  "type": "qemu-s390x-cpu", "vcpus-count": 1,
                  "props": { "core-id": 0 }
               }
             ]}

 -- Command: set-numa-node

     Runtime equivalent of '-numa' CLI option, available at preconfigure
     stage to configure numa mapping before initializing machine.

     Since 3.0

     Arguments: the members of 'NumaOptions'

 -- Object: CpuModelInfo

     Virtual CPU model.

     A CPU model consists of the name of a CPU definition, to which
     delta changes are applied (e.g.  features added/removed).  Most
     magic values that an architecture might require should be hidden
     behind the name.  However, if required, architectures can expose
     relevant properties.

     Members:
     'name: string'
          the name of the CPU definition the model is based on
     'props: value' (optional)
          a dictionary of QOM properties to be applied

     Since: 2.8.0

 -- Enum: CpuModelExpansionType

     An enumeration of CPU model expansion types.

     Values:
     'static'
          Expand to a static CPU model, a combination of a static base
          model name and property delta changes.  As the static base
          model will never change, the expanded CPU model will be the
          same, independent of QEMU version, machine type, machine
          options, and accelerator options.  Therefore, the resulting
          model can be used by tooling without having to specify a
          compatibility machine - e.g.  when displaying the "host"
          model.  The 'static' CPU models are migration-safe.
     'full'
          Expand all properties.  The produced model is not guaranteed
          to be migration-safe, but allows tooling to get an insight and
          work with model details.

     Note: When a non-migration-safe CPU model is expanded in static
     mode, some features enabled by the CPU model may be omitted,
     because they can't be implemented by a static CPU model definition
     (e.g.  cache info passthrough and PMU passthrough in x86).  If you
     need an accurate representation of the features enabled by a
     non-migration-safe CPU model, use 'full'.  If you need a static
     representation that will keep ABI compatibility even when changing
     QEMU version or machine-type, use 'static' (but keep in mind that
     some features may be omitted).

     Since: 2.8.0

 -- Enum: CpuModelCompareResult

     An enumeration of CPU model comparison results.  The result is
     usually calculated using e.g.  CPU features or CPU generations.

     Values:
     'incompatible'
          If model A is incompatible to model B, model A is not
          guaranteed to run where model B runs and the other way around.
     'identical'
          If model A is identical to model B, model A is guaranteed to
          run where model B runs and the other way around.
     'superset'
          If model A is a superset of model B, model B is guaranteed to
          run where model A runs.  There are no guarantees about the
          other way.
     'subset'
          If model A is a subset of model B, model A is guaranteed to
          run where model B runs.  There are no guarantees about the
          other way.

     Since: 2.8.0

 -- Object: CpuModelBaselineInfo

     The result of a CPU model baseline.

     Members:
     'model: CpuModelInfo'
          the baselined CpuModelInfo.

     Since: 2.8.0

     If: 'defined(TARGET_S390X)'

 -- Object: CpuModelCompareInfo

     The result of a CPU model comparison.

     Members:
     'result: CpuModelCompareResult'
          The result of the compare operation.
     'responsible-properties: array of string'
          List of properties that led to the comparison result not being
          identical.
     'responsible-properties' is a list of QOM property names that led
     to both CPUs not being detected as identical.  For identical
     models, this list is empty.  If a QOM property is read-only, that
     means there's no known way to make the CPU models identical.  If
     the special property name "type" is included, the models are by
     definition not identical and cannot be made identical.

     Since: 2.8.0

     If: 'defined(TARGET_S390X)'

 -- Command: query-cpu-model-comparison

     Compares two CPU models, returning how they compare in a specific
     configuration.  The results indicates how both models compare
     regarding runnability.  This result can be used by tooling to make
     decisions if a certain CPU model will run in a certain
     configuration or if a compatible CPU model has to be created by
     baselining.

     Usually, a CPU model is compared against the maximum possible CPU
     model of a certain configuration (e.g.  the "host" model for KVM).
     If that CPU model is identical or a subset, it will run in that
     configuration.

     The result returned by this command may be affected by:

        * QEMU version: CPU models may look different depending on the
          QEMU version.  (Except for CPU models reported as "static" in
          query-cpu-definitions.)
        * machine-type: CPU model may look different depending on the
          machine-type.  (Except for CPU models reported as "static" in
          query-cpu-definitions.)
        * machine options (including accelerator): in some
          architectures, CPU models may look different depending on
          machine and accelerator options.  (Except for CPU models
          reported as "static" in query-cpu-definitions.)
        * "-cpu" arguments and global properties: arguments to the -cpu
          option and global properties may affect expansion of CPU
          models.  Using query-cpu-model-expansion while using these is
          not advised.

     Some architectures may not support comparing CPU models.  s390x
     supports comparing CPU models.

     Arguments:
     'modela: CpuModelInfo'
          Not documented
     'modelb: CpuModelInfo'
          Not documented

     Returns: a CpuModelBaselineInfo.  Returns an error if comparing CPU
     models is not supported, if a model cannot be used, if a model
     contains an unknown cpu definition name, unknown properties or
     properties with wrong types.

     Note: this command isn't specific to s390x, but is only implemented
     on this architecture currently.

     Since: 2.8.0

     If: 'defined(TARGET_S390X)'

 -- Command: query-cpu-model-baseline

     Baseline two CPU models, creating a compatible third model.  The
     created model will always be a static, migration-safe CPU model
     (see "static" CPU model expansion for details).

     This interface can be used by tooling to create a compatible CPU
     model out two CPU models.  The created CPU model will be identical
     to or a subset of both CPU models when comparing them.  Therefore,
     the created CPU model is guaranteed to run where the given CPU
     models run.

     The result returned by this command may be affected by:

        * QEMU version: CPU models may look different depending on the
          QEMU version.  (Except for CPU models reported as "static" in
          query-cpu-definitions.)
        * machine-type: CPU model may look different depending on the
          machine-type.  (Except for CPU models reported as "static" in
          query-cpu-definitions.)
        * machine options (including accelerator): in some
          architectures, CPU models may look different depending on
          machine and accelerator options.  (Except for CPU models
          reported as "static" in query-cpu-definitions.)
        * "-cpu" arguments and global properties: arguments to the -cpu
          option and global properties may affect expansion of CPU
          models.  Using query-cpu-model-expansion while using these is
          not advised.

     Some architectures may not support baselining CPU models.  s390x
     supports baselining CPU models.

     Arguments:
     'modela: CpuModelInfo'
          Not documented
     'modelb: CpuModelInfo'
          Not documented

     Returns: a CpuModelBaselineInfo.  Returns an error if baselining
     CPU models is not supported, if a model cannot be used, if a model
     contains an unknown cpu definition name, unknown properties or
     properties with wrong types.

     Note: this command isn't specific to s390x, but is only implemented
     on this architecture currently.

     Since: 2.8.0

     If: 'defined(TARGET_S390X)'

 -- Object: CpuModelExpansionInfo

     The result of a cpu model expansion.

     Members:
     'model: CpuModelInfo'
          the expanded CpuModelInfo.

     Since: 2.8.0

     If: 'defined(TARGET_S390X) || defined(TARGET_I386) ||
     defined(TARGET_ARM)'

 -- Command: query-cpu-model-expansion

     Expands a given CPU model (or a combination of CPU model +
     additional options) to different granularities, allowing tooling to
     get an understanding what a specific CPU model looks like in QEMU
     under a certain configuration.

     This interface can be used to query the "host" CPU model.

     The data returned by this command may be affected by:

        * QEMU version: CPU models may look different depending on the
          QEMU version.  (Except for CPU models reported as "static" in
          query-cpu-definitions.)
        * machine-type: CPU model may look different depending on the
          machine-type.  (Except for CPU models reported as "static" in
          query-cpu-definitions.)
        * machine options (including accelerator): in some
          architectures, CPU models may look different depending on
          machine and accelerator options.  (Except for CPU models
          reported as "static" in query-cpu-definitions.)
        * "-cpu" arguments and global properties: arguments to the -cpu
          option and global properties may affect expansion of CPU
          models.  Using query-cpu-model-expansion while using these is
          not advised.

     Some architectures may not support all expansion types.  s390x
     supports "full" and "static".  Arm only supports "full".

     Arguments:
     'type: CpuModelExpansionType'
          Not documented
     'model: CpuModelInfo'
          Not documented

     Returns: a CpuModelExpansionInfo.  Returns an error if expanding
     CPU models is not supported, if the model cannot be expanded, if
     the model contains an unknown CPU definition name, unknown
     properties or properties with a wrong type.  Also returns an error
     if an expansion type is not supported.

     Since: 2.8.0

     If: 'defined(TARGET_S390X) || defined(TARGET_I386) ||
     defined(TARGET_ARM)'

 -- Object: CpuDefinitionInfo

     Virtual CPU definition.

     Members:
     'name: string'
          the name of the CPU definition
     'migration-safe: boolean' (optional)
          whether a CPU definition can be safely used for migration in
          combination with a QEMU compatibility machine when migrating
          between different QEMU versions and between hosts with
          different sets of (hardware or software) capabilities.  If not
          provided, information is not available and callers should not
          assume the CPU definition to be migration-safe.  (since 2.8)
     'static: boolean'
          whether a CPU definition is static and will not change
          depending on QEMU version, machine type, machine options and
          accelerator options.  A static model is always migration-safe.
          (since 2.8)
     'unavailable-features: array of string' (optional)
          List of properties that prevent the CPU model from running in
          the current host.  (since 2.8)
     'typename: string'
          Type name that can be used as argument to
          'device-list-properties', to introspect properties
          configurable using -cpu or -global.  (since 2.9)
     'alias-of: string' (optional)
          Name of CPU model this model is an alias for.  The target of
          the CPU model alias may change depending on the machine type.
          Management software is supposed to translate CPU model aliases
          in the VM configuration, because aliases may stop being
          migration-safe in the future (since 4.1)
     'unavailable-features' is a list of QOM property names that
     represent CPU model attributes that prevent the CPU from running.
     If the QOM property is read-only, that means there's no known way
     to make the CPU model run in the current host.  Implementations
     that choose not to provide specific information return the property
     name "type".  If the property is read-write, it means that it MAY
     be possible to run the CPU model in the current host if that
     property is changed.  Management software can use it as hints to
     suggest or choose an alternative for the user, or just to generate
     meaningful error messages explaining why the CPU model can't be
     used.  If 'unavailable-features' is an empty list, the CPU model is
     runnable using the current host and machine-type.  If
     'unavailable-features' is not present, runnability information for
     the CPU is not available.

     Since: 1.2.0

     If: 'defined(TARGET_PPC) || defined(TARGET_ARM) ||
     defined(TARGET_I386) || defined(TARGET_S390X) ||
     defined(TARGET_MIPS)'

 -- Command: query-cpu-definitions

     Return a list of supported virtual CPU definitions

     Returns: a list of CpuDefInfo

     Since: 1.2.0

     If: 'defined(TARGET_PPC) || defined(TARGET_ARM) ||
     defined(TARGET_I386) || defined(TARGET_S390X) ||
     defined(TARGET_MIPS)'

1.24 Miscellanea
================

 -- Command: qmp_capabilities

     Enable QMP capabilities.

     Arguments:

     Arguments:
     'enable: array of QMPCapability' (optional)
          An optional list of QMPCapability values to enable.  The
          client must not enable any capability that is not mentioned in
          the QMP greeting message.  If the field is not provided, it
          means no QMP capabilities will be enabled.  (since 2.12)

     Example:
          -> { "execute": "qmp_capabilities",
               "arguments": { "enable": [ "oob" ] } }
          <- { "return": {} }

     Notes: This command is valid exactly when first connecting: it must
     be issued before any other command will be accepted, and will fail
     once the monitor is accepting other commands.  (see qemu
     docs/interop/qmp-spec.txt)

     The QMP client needs to explicitly enable QMP capabilities,
     otherwise all the QMP capabilities will be turned off by default.

     Since: 0.13

 -- Enum: QMPCapability

     Enumeration of capabilities to be advertised during initial client
     connection, used for agreeing on particular QMP extension
     behaviors.

     Values:
     'oob'
          QMP ability to support out-of-band requests.  (Please refer to
          qmp-spec.txt for more information on OOB)

     Since: 2.12

 -- Object: VersionTriple

     A three-part version number.

     Members:
     'major: int'
          The major version number.
     'minor: int'
          The minor version number.
     'micro: int'
          The micro version number.

     Since: 2.4

 -- Object: VersionInfo

     A description of QEMU's version.

     Members:
     'qemu: VersionTriple'
          The version of QEMU. By current convention, a micro version of
          50 signifies a development branch.  A micro version greater
          than or equal to 90 signifies a release candidate for the next
          minor version.  A micro version of less than 50 signifies a
          stable release.
     'package: string'
          QEMU will always set this field to an empty string.
          Downstream versions of QEMU should set this to a non-empty
          string.  The exact format depends on the downstream however it
          highly recommended that a unique name is used.

     Since: 0.14.0

 -- Command: query-version

     Returns the current version of QEMU.

     Returns: A 'VersionInfo' object describing the current version of
     QEMU.

     Since: 0.14.0

     Example:
          -> { "execute": "query-version" }
          <- {
                "return":{
                   "qemu":{
                      "major":0,
                      "minor":11,
                      "micro":5
                   },
                   "package":""
                }
             }

 -- Object: CommandInfo

     Information about a QMP command

     Members:
     'name: string'
          The command name

     Since: 0.14.0

 -- Command: query-commands

     Return a list of supported QMP commands by this server

     Returns: A list of 'CommandInfo' for all supported commands

     Since: 0.14.0

     Example:
          -> { "execute": "query-commands" }
          <- {
               "return":[
                  {
                     "name":"query-balloon"
                  },
                  {
                     "name":"system_powerdown"
                  }
               ]
             }

     Note: This example has been shortened as the real response is too
     long.

 -- Enum: LostTickPolicy

     Policy for handling lost ticks in timer devices.

     Values:
     'discard'
          throw away the missed tick(s) and continue with future
          injection normally.  Guest time may be delayed, unless the OS
          has explicit handling of lost ticks
     'delay'
          continue to deliver ticks at the normal rate.  Guest time will
          be delayed due to the late tick
     'slew'
          deliver ticks at a higher rate to catch up with the missed
          tick.  The guest time should not be delayed once catchup is
          complete.

     Since: 2.0

 -- Command: add_client

     Allow client connections for VNC, Spice and socket based character
     devices to be passed in to QEMU via SCM_RIGHTS.

     Arguments:
     'protocol: string'
          protocol name.  Valid names are "vnc", "spice" or the name of
          a character device (eg.  from -chardev id=XXXX)
     'fdname: string'
          file descriptor name previously passed via 'getfd' command
     'skipauth: boolean' (optional)
          whether to skip authentication.  Only applies to "vnc" and
          "spice" protocols
     'tls: boolean' (optional)
          whether to perform TLS. Only applies to the "spice" protocol

     Returns: nothing on success.

     Since: 0.14.0

     Example:
          -> { "execute": "add_client", "arguments": { "protocol": "vnc",
                                                       "fdname": "myclient" } }
          <- { "return": {} }

 -- Object: NameInfo

     Guest name information.

     Members:
     'name: string' (optional)
          The name of the guest

     Since: 0.14.0

 -- Command: query-name

     Return the name information of a guest.

     Returns: 'NameInfo' of the guest

     Since: 0.14.0

     Example:
          -> { "execute": "query-name" }
          <- { "return": { "name": "qemu-name" } }

 -- Object: KvmInfo

     Information about support for KVM acceleration

     Members:
     'enabled: boolean'
          true if KVM acceleration is active
     'present: boolean'
          true if KVM acceleration is built into this executable

     Since: 0.14.0

 -- Command: query-kvm

     Returns information about KVM acceleration

     Returns: 'KvmInfo'

     Since: 0.14.0

     Example:
          -> { "execute": "query-kvm" }
          <- { "return": { "enabled": true, "present": true } }

 -- Object: UuidInfo

     Guest UUID information (Universally Unique Identifier).

     Members:
     'UUID: string'
          the UUID of the guest

     Since: 0.14.0

     Notes: If no UUID was specified for the guest, a null UUID is
     returned.

 -- Command: query-uuid

     Query the guest UUID information.

     Returns: The 'UuidInfo' for the guest

     Since: 0.14.0

     Example:
          -> { "execute": "query-uuid" }
          <- { "return": { "UUID": "550e8400-e29b-41d4-a716-446655440000" } }

 -- Object: EventInfo

     Information about a QMP event

     Members:
     'name: string'
          The event name

     Since: 1.2.0

 -- Command: query-events

     Return information on QMP events.

     Returns: A list of 'EventInfo'.

     Since: 1.2.0

     Note: This command is deprecated, because its output doesn't
     reflect compile-time configuration.  Use query-qmp-schema instead.

     Example:
          -> { "execute": "query-events" }
          <- {
               "return": [
                   {
                      "name":"SHUTDOWN"
                   },
                   {
                      "name":"RESET"
                   }
                ]
             }

     Note: This example has been shortened as the real response is too
     long.

 -- Object: IOThreadInfo

     Information about an iothread

     Members:
     'id: string'
          the identifier of the iothread
     'thread-id: int'
          ID of the underlying host thread
     'poll-max-ns: int'
          maximum polling time in ns, 0 means polling is disabled (since
          2.9)
     'poll-grow: int'
          how many ns will be added to polling time, 0 means that it's
          not configured (since 2.9)
     'poll-shrink: int'
          how many ns will be removed from polling time, 0 means that
          it's not configured (since 2.9)

     Since: 2.0

 -- Command: query-iothreads

     Returns a list of information about each iothread.

     Note: this list excludes the QEMU main loop thread, which is not
     declared using the -object iothread command-line option.  It is
     always the main thread of the process.

     Returns: a list of 'IOThreadInfo' for each iothread

     Since: 2.0

     Example:
          -> { "execute": "query-iothreads" }
          <- { "return": [
                   {
                      "id":"iothread0",
                      "thread-id":3134
                   },
                   {
                      "id":"iothread1",
                      "thread-id":3135
                   }
                ]
             }

 -- Object: BalloonInfo

     Information about the guest balloon device.

     Members:
     'actual: int'
          the number of bytes the balloon currently contains

     Since: 0.14.0

 -- Command: query-balloon

     Return information about the balloon device.

     Returns: 'BalloonInfo' on success

     If the balloon driver is enabled but not functional because the KVM
     kernel module cannot support it, KvmMissingCap

     If no balloon device is present, DeviceNotActive

     Since: 0.14.0

     Example:
          -> { "execute": "query-balloon" }
          <- { "return": {
                   "actual": 1073741824,
                }
             }

 -- Event: BALLOON_CHANGE

     Emitted when the guest changes the actual BALLOON level.  This
     value is equivalent to the 'actual' field return by the
     'query-balloon' command

     Arguments:
     'actual: int'
          actual level of the guest memory balloon in bytes

     Note: this event is rate-limited.

     Since: 1.2

     Example:
          <- { "event": "BALLOON_CHANGE",
               "data": { "actual": 944766976 },
               "timestamp": { "seconds": 1267020223, "microseconds": 435656 } }

 -- Object: PciMemoryRange

     A PCI device memory region

     Members:
     'base: int'
          the starting address (guest physical)
     'limit: int'
          the ending address (guest physical)

     Since: 0.14.0

 -- Object: PciMemoryRegion

     Information about a PCI device I/O region.

     Members:
     'bar: int'
          the index of the Base Address Register for this region
     'type: string'
          'io' if the region is a PIO region 'memory' if the region is a
          MMIO region
     'size: int'
          memory size
     'prefetch: boolean' (optional)
          if 'type' is 'memory', true if the memory is prefetchable
     'mem_type_64: boolean' (optional)
          if 'type' is 'memory', true if the BAR is 64-bit
     'address: int'
          Not documented

     Since: 0.14.0

 -- Object: PciBusInfo

     Information about a bus of a PCI Bridge device

     Members:
     'number: int'
          primary bus interface number.  This should be the number of
          the bus the device resides on.
     'secondary: int'
          secondary bus interface number.  This is the number of the
          main bus for the bridge
     'subordinate: int'
          This is the highest number bus that resides below the bridge.
     'io_range: PciMemoryRange'
          The PIO range for all devices on this bridge
     'memory_range: PciMemoryRange'
          The MMIO range for all devices on this bridge
     'prefetchable_range: PciMemoryRange'
          The range of prefetchable MMIO for all devices on this bridge

     Since: 2.4

 -- Object: PciBridgeInfo

     Information about a PCI Bridge device

     Members:
     'bus: PciBusInfo'
          information about the bus the device resides on
     'devices: array of PciDeviceInfo' (optional)
          a list of 'PciDeviceInfo' for each device on this bridge

     Since: 0.14.0

 -- Object: PciDeviceClass

     Information about the Class of a PCI device

     Members:
     'desc: string' (optional)
          a string description of the device's class
     'class: int'
          the class code of the device

     Since: 2.4

 -- Object: PciDeviceId

     Information about the Id of a PCI device

     Members:
     'device: int'
          the PCI device id
     'vendor: int'
          the PCI vendor id
     'subsystem: int' (optional)
          the PCI subsystem id (since 3.1)
     'subsystem-vendor: int' (optional)
          the PCI subsystem vendor id (since 3.1)

     Since: 2.4

 -- Object: PciDeviceInfo

     Information about a PCI device

     Members:
     'bus: int'
          the bus number of the device
     'slot: int'
          the slot the device is located in
     'function: int'
          the function of the slot used by the device
     'class_info: PciDeviceClass'
          the class of the device
     'id: PciDeviceId'
          the PCI device id
     'irq: int' (optional)
          if an IRQ is assigned to the device, the IRQ number
     'qdev_id: string'
          the device name of the PCI device
     'pci_bridge: PciBridgeInfo' (optional)
          if the device is a PCI bridge, the bridge information
     'regions: array of PciMemoryRegion'
          a list of the PCI I/O regions associated with the device

     Notes: the contents of 'class_info'.desc are not stable and should
     only be treated as informational.

     Since: 0.14.0

 -- Object: PciInfo

     Information about a PCI bus

     Members:
     'bus: int'
          the bus index
     'devices: array of PciDeviceInfo'
          a list of devices on this bus

     Since: 0.14.0

 -- Command: query-pci

     Return information about the PCI bus topology of the guest.

     Returns: a list of 'PciInfo' for each PCI bus.  Each bus is
     represented by a json-object, which has a key with a json-array of
     all PCI devices attached to it.  Each device is represented by a
     json-object.

     Since: 0.14.0

     Example:
          -> { "execute": "query-pci" }
          <- { "return": [
                   {
                      "bus": 0,
                      "devices": [
                         {
                            "bus": 0,
                            "qdev_id": "",
                            "slot": 0,
                            "class_info": {
                               "class": 1536,
                               "desc": "Host bridge"
                            },
                            "id": {
                               "device": 32902,
                               "vendor": 4663
                            },
                            "function": 0,
                            "regions": [
                            ]
                         },
                         {
                            "bus": 0,
                            "qdev_id": "",
                            "slot": 1,
                            "class_info": {
                               "class": 1537,
                               "desc": "ISA bridge"
                            },
                            "id": {
                               "device": 32902,
                               "vendor": 28672
                            },
                            "function": 0,
                            "regions": [
                            ]
                         },
                         {
                            "bus": 0,
                            "qdev_id": "",
                            "slot": 1,
                            "class_info": {
                               "class": 257,
                               "desc": "IDE controller"
                            },
                            "id": {
                               "device": 32902,
                               "vendor": 28688
                            },
                            "function": 1,
                            "regions": [
                               {
                                  "bar": 4,
                                  "size": 16,
                                  "address": 49152,
                                  "type": "io"
                               }
                            ]
                         },
                         {
                            "bus": 0,
                            "qdev_id": "",
                            "slot": 2,
                            "class_info": {
                               "class": 768,
                               "desc": "VGA controller"
                            },
                            "id": {
                               "device": 4115,
                               "vendor": 184
                            },
                            "function": 0,
                            "regions": [
                               {
                                  "prefetch": true,
                                  "mem_type_64": false,
                                  "bar": 0,
                                  "size": 33554432,
                                  "address": 4026531840,
                                  "type": "memory"
                               },
                               {
                                  "prefetch": false,
                                  "mem_type_64": false,
                                  "bar": 1,
                                  "size": 4096,
                                  "address": 4060086272,
                                  "type": "memory"
                               },
                               {
                                  "prefetch": false,
                                  "mem_type_64": false,
                                  "bar": 6,
                                  "size": 65536,
                                  "address": -1,
                                  "type": "memory"
                               }
                            ]
                         },
                         {
                            "bus": 0,
                            "qdev_id": "",
                            "irq": 11,
                            "slot": 4,
                            "class_info": {
                               "class": 1280,
                               "desc": "RAM controller"
                            },
                            "id": {
                               "device": 6900,
                               "vendor": 4098
                            },
                            "function": 0,
                            "regions": [
                               {
                                  "bar": 0,
                                  "size": 32,
                                  "address": 49280,
                                  "type": "io"
                               }
                            ]
                         }
                      ]
                   }
                ]
             }

     Note: This example has been shortened as the real response is too
     long.

 -- Command: quit

     This command will cause the QEMU process to exit gracefully.  While
     every attempt is made to send the QMP response before terminating,
     this is not guaranteed.  When using this interface, a premature EOF
     would not be unexpected.

     Since: 0.14.0

     Example:
          -> { "execute": "quit" }
          <- { "return": {} }

 -- Command: stop

     Stop all guest VCPU execution.

     Since: 0.14.0

     Notes: This function will succeed even if the guest is already in
     the stopped state.  In "inmigrate" state, it will ensure that the
     guest remains paused once migration finishes, as if the -S option
     was passed on the command line.

     Example:
          -> { "execute": "stop" }
          <- { "return": {} }

 -- Command: system_reset

     Performs a hard reset of a guest.

     Since: 0.14.0

     Example:
          -> { "execute": "system_reset" }
          <- { "return": {} }

 -- Command: system_powerdown

     Requests that a guest perform a powerdown operation.

     Since: 0.14.0

     Notes: A guest may or may not respond to this command.  This
     command returning does not indicate that a guest has accepted the
     request or that it has shut down.  Many guests will respond to this
     command by prompting the user in some way.

     Example:
          -> { "execute": "system_powerdown" }
          <- { "return": {} }

 -- Command: memsave

     Save a portion of guest memory to a file.

     Arguments:
     'val: int'
          the virtual address of the guest to start from
     'size: int'
          the size of memory region to save
     'filename: string'
          the file to save the memory to as binary data
     'cpu-index: int' (optional)
          the index of the virtual CPU to use for translating the
          virtual address (defaults to CPU 0)

     Returns: Nothing on success

     Since: 0.14.0

     Notes: Errors were not reliably returned until 1.1

     Example:
          -> { "execute": "memsave",
               "arguments": { "val": 10,
                              "size": 100,
                              "filename": "/tmp/virtual-mem-dump" } }
          <- { "return": {} }

 -- Command: pmemsave

     Save a portion of guest physical memory to a file.

     Arguments:
     'val: int'
          the physical address of the guest to start from
     'size: int'
          the size of memory region to save
     'filename: string'
          the file to save the memory to as binary data

     Returns: Nothing on success

     Since: 0.14.0

     Notes: Errors were not reliably returned until 1.1

     Example:
          -> { "execute": "pmemsave",
               "arguments": { "val": 10,
                              "size": 100,
                              "filename": "/tmp/physical-mem-dump" } }
          <- { "return": {} }

 -- Command: cont

     Resume guest VCPU execution.

     Since: 0.14.0

     Returns: If successful, nothing

     Notes: This command will succeed if the guest is currently running.
     It will also succeed if the guest is in the "inmigrate" state; in
     this case, the effect of the command is to make sure the guest
     starts once migration finishes, removing the effect of the -S
     command line option if it was passed.

     Example:
          -> { "execute": "cont" }
          <- { "return": {} }

 -- Command: x-exit-preconfig

     Exit from "preconfig" state

     This command makes QEMU exit the preconfig state and proceed with
     VM initialization using configuration data provided on the command
     line and via the QMP monitor during the preconfig state.  The
     command is only available during the preconfig state (i.e.  when
     the -preconfig command line option was in use).

     Since 3.0

     Returns: nothing

     Example:
          -> { "execute": "x-exit-preconfig" }
          <- { "return": {} }

 -- Command: system_wakeup

     Wake up guest from suspend.  If the guest has wake-up from suspend
     support enabled (wakeup-suspend-support flag from
     query-current-machine), wake-up guest from suspend if the guest is
     in SUSPENDED state.  Return an error otherwise.

     Since: 1.1

     Returns: nothing.

     Note: prior to 4.0, this command does nothing in case the guest
     isn't suspended.

     Example:
          -> { "execute": "system_wakeup" }
          <- { "return": {} }

 -- Command: inject-nmi

     Injects a Non-Maskable Interrupt into the default CPU (x86/s390) or
     all CPUs (ppc64).  The command fails when the guest doesn't support
     injecting.

     Returns: If successful, nothing

     Since: 0.14.0

     Note: prior to 2.1, this command was only supported for x86 and
     s390 VMs

     Example:
          -> { "execute": "inject-nmi" }
          <- { "return": {} }

 -- Command: balloon

     Request the balloon driver to change its balloon size.

     Arguments:
     'value: int'
          the target size of the balloon in bytes

     Returns: Nothing on success If the balloon driver is enabled but
     not functional because the KVM kernel module cannot support it,
     KvmMissingCap If no balloon device is present, DeviceNotActive

     Notes: This command just issues a request to the guest.  When it
     returns, the balloon size may not have changed.  A guest can change
     the balloon size independent of this command.

     Since: 0.14.0

     Example:
          -> { "execute": "balloon", "arguments": { "value": 536870912 } }
          <- { "return": {} }

 -- Command: human-monitor-command

     Execute a command on the human monitor and return the output.

     Arguments:
     'command-line: string'
          the command to execute in the human monitor
     'cpu-index: int' (optional)
          The CPU to use for commands that require an implicit CPU

     Features:
     'savevm-monitor-nodes'
          If present, HMP command savevm only snapshots monitor-owned
          nodes if they have no parents.  This allows the use of
          'savevm' with -blockdev.  (since 4.2)

     Returns: the output of the command as a string

     Since: 0.14.0

     Notes: This command only exists as a stop-gap.  Its use is highly
     discouraged.  The semantics of this command are not guaranteed:
     this means that command names, arguments and responses can change
     or be removed at ANY time.  Applications that rely on long term
     stability guarantees should NOT use this command.

     Known limitations:

        * This command is stateless, this means that commands that
          depend on state information (such as getfd) might not work

        * Commands that prompt the user for data don't currently work

     Example:
          -> { "execute": "human-monitor-command",
               "arguments": { "command-line": "info kvm" } }
          <- { "return": "kvm support: enabled\r\n" }

 -- Command: change

     This command is multiple commands multiplexed together.

     Arguments:
     'device: string'
          This is normally the name of a block device but it may also be
          'vnc'.  when it's 'vnc', then sub command depends on 'target'
     'target: string'
          If 'device' is a block device, then this is the new filename.
          If 'device' is 'vnc', then if the value 'password' selects the
          vnc change password command.  Otherwise, this specifies a new
          server URI address to listen to for VNC connections.
     'arg: string' (optional)
          If 'device' is a block device, then this is an optional format
          to open the device with.  If 'device' is 'vnc' and 'target' is
          'password', this is the new VNC password to set.  See
          change-vnc-password for additional notes.

     Returns: Nothing on success.  If 'device' is not a valid block
     device, DeviceNotFound

     Notes: This interface is deprecated, and it is strongly recommended
     that you avoid using it.  For changing block devices, use
     blockdev-change-medium; for changing VNC parameters, use
     change-vnc-password.

     Since: 0.14.0

     Example:
          1. Change a removable medium

          -> { "execute": "change",
               "arguments": { "device": "ide1-cd0",
                              "target": "/srv/images/Fedora-12-x86_64-DVD.iso" } }
          <- { "return": {} }

          2. Change VNC password

          -> { "execute": "change",
               "arguments": { "device": "vnc", "target": "password",
                              "arg": "foobar1" } }
          <- { "return": {} }

 -- Command: xen-set-global-dirty-log

     Enable or disable the global dirty log mode.

     Arguments:
     'enable: boolean'
          true to enable, false to disable.

     Returns: nothing

     Since: 1.3

     Example:
          -> { "execute": "xen-set-global-dirty-log",
               "arguments": { "enable": true } }
          <- { "return": {} }

 -- Command: getfd

     Receive a file descriptor via SCM rights and assign it a name

     Arguments:
     'fdname: string'
          file descriptor name

     Returns: Nothing on success

     Since: 0.14.0

     Notes: If 'fdname' already exists, the file descriptor assigned to
     it will be closed and replaced by the received file descriptor.

     The 'closefd' command can be used to explicitly close the file
     descriptor when it is no longer needed.

     Example:
          -> { "execute": "getfd", "arguments": { "fdname": "fd1" } }
          <- { "return": {} }

 -- Command: closefd

     Close a file descriptor previously passed via SCM rights

     Arguments:
     'fdname: string'
          file descriptor name

     Returns: Nothing on success

     Since: 0.14.0

     Example:
          -> { "execute": "closefd", "arguments": { "fdname": "fd1" } }
          <- { "return": {} }

 -- Object: MemoryInfo

     Actual memory information in bytes.

     Members:
     'base-memory: int'
          size of "base" memory specified with command line option -m.
     'plugged-memory: int' (optional)
          size of memory that can be hot-unplugged.  This field is
          omitted if target doesn't support memory hotplug (i.e.
          CONFIG_MEM_DEVICE not defined at build time).

     Since: 2.11.0

 -- Command: query-memory-size-summary

     Return the amount of initially allocated and present hotpluggable
     (if enabled) memory in bytes.

     Example:
          -> { "execute": "query-memory-size-summary" }
          <- { "return": { "base-memory": 4294967296, "plugged-memory": 0 } }

     Since: 2.11.0

 -- Object: AddfdInfo

     Information about a file descriptor that was added to an fd set.

     Members:
     'fdset-id: int'
          The ID of the fd set that 'fd' was added to.
     'fd: int'
          The file descriptor that was received via SCM rights and added
          to the fd set.

     Since: 1.2.0

 -- Command: add-fd

     Add a file descriptor, that was passed via SCM rights, to an fd
     set.

     Arguments:
     'fdset-id: int' (optional)
          The ID of the fd set to add the file descriptor to.
     'opaque: string' (optional)
          A free-form string that can be used to describe the fd.

     Returns: 'AddfdInfo' on success

     If file descriptor was not received, FdNotSupplied

     If 'fdset-id' is a negative value, InvalidParameterValue

     Notes: The list of fd sets is shared by all monitor connections.

     If 'fdset-id' is not specified, a new fd set will be created.

     Since: 1.2.0

     Example:
          -> { "execute": "add-fd", "arguments": { "fdset-id": 1 } }
          <- { "return": { "fdset-id": 1, "fd": 3 } }

 -- Command: remove-fd

     Remove a file descriptor from an fd set.

     Arguments:
     'fdset-id: int'
          The ID of the fd set that the file descriptor belongs to.
     'fd: int' (optional)
          The file descriptor that is to be removed.

     Returns: Nothing on success If 'fdset-id' or 'fd' is not found,
     FdNotFound

     Since: 1.2.0

     Notes: The list of fd sets is shared by all monitor connections.

     If 'fd' is not specified, all file descriptors in 'fdset-id' will
     be removed.

     Example:
          -> { "execute": "remove-fd", "arguments": { "fdset-id": 1, "fd": 3 } }
          <- { "return": {} }

 -- Object: FdsetFdInfo

     Information about a file descriptor that belongs to an fd set.

     Members:
     'fd: int'
          The file descriptor value.
     'opaque: string' (optional)
          A free-form string that can be used to describe the fd.

     Since: 1.2.0

 -- Object: FdsetInfo

     Information about an fd set.

     Members:
     'fdset-id: int'
          The ID of the fd set.
     'fds: array of FdsetFdInfo'
          A list of file descriptors that belong to this fd set.

     Since: 1.2.0

 -- Command: query-fdsets

     Return information describing all fd sets.

     Returns: A list of 'FdsetInfo'

     Since: 1.2.0

     Note: The list of fd sets is shared by all monitor connections.

     Example:
          -> { "execute": "query-fdsets" }
          <- { "return": [
                 {
                   "fds": [
                     {
                       "fd": 30,
                       "opaque": "rdonly:/path/to/file"
                     },
                     {
                       "fd": 24,
                       "opaque": "rdwr:/path/to/file"
                     }
                   ],
                   "fdset-id": 1
                 },
                 {
                   "fds": [
                     {
                       "fd": 28
                     },
                     {
                       "fd": 29
                     }
                   ],
                   "fdset-id": 0
                 }
               ]
             }

 -- Object: AcpiTableOptions

     Specify an ACPI table on the command line to load.

     At most one of 'file' and 'data' can be specified.  The list of
     files specified by any one of them is loaded and concatenated in
     order.  If both are omitted, 'data' is implied.

     Other fields / optargs can be used to override fields of the
     generic ACPI table header; refer to the ACPI specification 5.0,
     section 5.2.6 System Description Table Header.  If a header field
     is not overridden, then the corresponding value from the
     concatenated blob is used (in case of 'file'), or it is filled in
     with a hard-coded value (in case of 'data').

     String fields are copied into the matching ACPI member from lowest
     address upwards, and silently truncated / NUL-padded to length.

     Members:
     'sig: string' (optional)
          table signature / identifier (4 bytes)
     'rev: int' (optional)
          table revision number (dependent on signature, 1 byte)
     'oem_id: string' (optional)
          OEM identifier (6 bytes)
     'oem_table_id: string' (optional)
          OEM table identifier (8 bytes)
     'oem_rev: int' (optional)
          OEM-supplied revision number (4 bytes)
     'asl_compiler_id: string' (optional)
          identifier of the utility that created the table (4 bytes)
     'asl_compiler_rev: int' (optional)
          revision number of the utility that created the table (4
          bytes)
     'file: string' (optional)
          colon (:) separated list of pathnames to load and concatenate
          as table data.  The resultant binary blob is expected to have
          an ACPI table header.  At least one file is required.  This
          field excludes 'data'.
     'data: string' (optional)
          colon (:) separated list of pathnames to load and concatenate
          as table data.  The resultant binary blob must not have an
          ACPI table header.  At least one file is required.  This field
          excludes 'file'.

     Since: 1.5

 -- Enum: CommandLineParameterType

     Possible types for an option parameter.

     Values:
     'string'
          accepts a character string
     'boolean'
          accepts "on" or "off"
     'number'
          accepts a number
     'size'
          accepts a number followed by an optional suffix (K)ilo,
          (M)ega, (G)iga, (T)era

     Since: 1.5

 -- Object: CommandLineParameterInfo

     Details about a single parameter of a command line option.

     Members:
     'name: string'
          parameter name
     'type: CommandLineParameterType'
          parameter 'CommandLineParameterType'
     'help: string' (optional)
          human readable text string, not suitable for parsing.
     'default: string' (optional)
          default value string (since 2.1)

     Since: 1.5

 -- Object: CommandLineOptionInfo

     Details about a command line option, including its list of
     parameter details

     Members:
     'option: string'
          option name
     'parameters: array of CommandLineParameterInfo'
          an array of 'CommandLineParameterInfo'

     Since: 1.5

 -- Command: query-command-line-options

     Query command line option schema.

     Arguments:
     'option: string' (optional)
          option name

     Returns: list of 'CommandLineOptionInfo' for all options (or for
     the given 'option').  Returns an error if the given 'option'
     doesn't exist.

     Since: 1.5

     Example:
          -> { "execute": "query-command-line-options",
               "arguments": { "option": "option-rom" } }
          <- { "return": [
                  {
                      "parameters": [
                          {
                              "name": "romfile",
                              "type": "string"
                          },
                          {
                              "name": "bootindex",
                              "type": "number"
                          }
                      ],
                      "option": "option-rom"
                  }
               ]
             }

 -- Object: PCDIMMDeviceInfo

     PCDIMMDevice state information

     Members:
     'id: string' (optional)
          device's ID
     'addr: int'
          physical address, where device is mapped
     'size: int'
          size of memory that the device provides
     'slot: int'
          slot number at which device is plugged in
     'node: int'
          NUMA node number where device is plugged in
     'memdev: string'
          memory backend linked with device
     'hotplugged: boolean'
          true if device was hotplugged
     'hotpluggable: boolean'
          true if device if could be added/removed while machine is
          running

     Since: 2.1

 -- Object: VirtioPMEMDeviceInfo

     VirtioPMEM state information

     Members:
     'id: string' (optional)
          device's ID
     'memaddr: int'
          physical address in memory, where device is mapped
     'size: int'
          size of memory that the device provides
     'memdev: string'
          memory backend linked with device

     Since: 4.1

 -- Object: MemoryDeviceInfo

     Union containing information about a memory device

     nvdimm is included since 2.12.  virtio-pmem is included since 4.1.

     Members:
     'type'
          One of "dimm", "nvdimm", "virtio-pmem"
     'data: PCDIMMDeviceInfo' when 'type' is "dimm"
     'data: PCDIMMDeviceInfo' when 'type' is "nvdimm"
     'data: VirtioPMEMDeviceInfo' when 'type' is "virtio-pmem"

     Since: 2.1

 -- Command: query-memory-devices

     Lists available memory devices and their state

     Since: 2.1

     Example:
          -> { "execute": "query-memory-devices" }
          <- { "return": [ { "data":
                                { "addr": 5368709120,
                                  "hotpluggable": true,
                                  "hotplugged": true,
                                  "id": "d1",
                                  "memdev": "/objects/memX",
                                  "node": 0,
                                  "size": 1073741824,
                                  "slot": 0},
                             "type": "dimm"
                           } ] }

 -- Event: MEM_UNPLUG_ERROR

     Emitted when memory hot unplug error occurs.

     Arguments:
     'device: string'
          device name
     'msg: string'
          Informative message

     Since: 2.4

     Example:
          <- { "event": "MEM_UNPLUG_ERROR"
               "data": { "device": "dimm1",
                         "msg": "acpi: device unplug for unsupported device"
               },
               "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }

 -- Enum: ACPISlotType

     Values:
     'DIMM'
          memory slot
     'CPU'
          logical CPU slot (since 2.7)

 -- Object: ACPIOSTInfo

     OSPM Status Indication for a device For description of possible
     values of 'source' and 'status' fields see "_OST (OSPM Status
     Indication)" chapter of ACPI5.0 spec.

     Members:
     'device: string' (optional)
          device ID associated with slot
     'slot: string'
          slot ID, unique per slot of a given 'slot-type'
     'slot-type: ACPISlotType'
          type of the slot
     'source: int'
          an integer containing the source event
     'status: int'
          an integer containing the status code

     Since: 2.1

 -- Command: query-acpi-ospm-status

     Return a list of ACPIOSTInfo for devices that support status
     reporting via ACPI _OST method.

     Since: 2.1

     Example:
          -> { "execute": "query-acpi-ospm-status" }
          <- { "return": [ { "device": "d1", "slot": "0", "slot-type": "DIMM", "source": 1, "status": 0},
                           { "slot": "1", "slot-type": "DIMM", "source": 0, "status": 0},
                           { "slot": "2", "slot-type": "DIMM", "source": 0, "status": 0},
                           { "slot": "3", "slot-type": "DIMM", "source": 0, "status": 0}
             ]}

 -- Event: ACPI_DEVICE_OST

     Emitted when guest executes ACPI _OST method.

     Arguments:
     'info: ACPIOSTInfo'
          OSPM Status Indication

     Since: 2.1

     Example:
          <- { "event": "ACPI_DEVICE_OST",
               "data": { "device": "d1", "slot": "0",
                         "slot-type": "DIMM", "source": 1, "status": 0 } }

 -- Enum: ReplayMode

     Mode of the replay subsystem.

     Values:
     'none'
          normal execution mode.  Replay or record are not enabled.
     'record'
          record mode.  All non-deterministic data is written into the
          replay log.
     'play'
          replay mode.  Non-deterministic data required for system
          execution is read from the log.

     Since: 2.5

 -- Command: xen-load-devices-state

     Load the state of all devices from file.  The RAM and the block
     devices of the VM are not loaded by this command.

     Arguments:
     'filename: string'
          the file to load the state of the devices from as binary data.
          See xen-save-devices-state.txt for a description of the binary
          format.

     Since: 2.7

     Example:
          -> { "execute": "xen-load-devices-state",
               "arguments": { "filename": "/tmp/resume" } }
          <- { "return": {} }

 -- Object: GuidInfo

     GUID information.

     Members:
     'guid: string'
          the globally unique identifier

     Since: 2.9

 -- Command: query-vm-generation-id

     Show Virtual Machine Generation ID

     Since: 2.9

 -- Event: RTC_CHANGE

     Emitted when the guest changes the RTC time.

     Arguments:
     'offset: int'
          offset between base RTC clock (as specified by -rtc base), and
          new RTC clock value

     Note: This event is rate-limited.

     Since: 0.13.0

     Example:
          <-   { "event": "RTC_CHANGE",
                 "data": { "offset": 78 },
                 "timestamp": { "seconds": 1267020223, "microseconds": 435656 } }

     If: 'defined(TARGET_ALPHA) || defined(TARGET_ARM) ||
     defined(TARGET_HPPA) || defined(TARGET_I386) ||
     defined(TARGET_MIPS) || defined(TARGET_MIPS64) ||
     defined(TARGET_MOXIE) || defined(TARGET_PPC) ||
     defined(TARGET_PPC64) || defined(TARGET_S390X) ||
     defined(TARGET_SH4) || defined(TARGET_SPARC)'

 -- Command: rtc-reset-reinjection

     This command will reset the RTC interrupt reinjection backlog.  Can
     be used if another mechanism to synchronize guest time is in
     effect, for example QEMU guest agent's guest-set-time command.

     Since: 2.1

     Example:
          -> { "execute": "rtc-reset-reinjection" }
          <- { "return": {} }

     If: 'defined(TARGET_I386)'

 -- Enum: SevState

     An enumeration of SEV state information used during 'query-sev'.

     Values:
     'uninit'
          The guest is uninitialized.
     'launch-update'
          The guest is currently being launched; plaintext data and
          register state is being imported.
     'launch-secret'
          The guest is currently being launched; ciphertext data is
          being imported.
     'running'
          The guest is fully launched or migrated in.
     'send-update'
          The guest is currently being migrated out to another machine.
     'receive-update'
          The guest is currently being migrated from another machine.

     Since: 2.12

     If: 'defined(TARGET_I386)'

 -- Object: SevInfo

     Information about Secure Encrypted Virtualization (SEV) support

     Members:
     'enabled: boolean'
          true if SEV is active
     'api-major: int'
          SEV API major version
     'api-minor: int'
          SEV API minor version
     'build-id: int'
          SEV FW build id
     'policy: int'
          SEV policy value
     'state: SevState'
          SEV guest state
     'handle: int'
          SEV firmware handle

     Since: 2.12

     If: 'defined(TARGET_I386)'

 -- Command: query-sev

     Returns information about SEV

     Returns: 'SevInfo'

     Since: 2.12

     Example:
          -> { "execute": "query-sev" }
          <- { "return": { "enabled": true, "api-major" : 0, "api-minor" : 0,
                           "build-id" : 0, "policy" : 0, "state" : "running",
                           "handle" : 1 } }

     If: 'defined(TARGET_I386)'

 -- Object: SevLaunchMeasureInfo

     SEV Guest Launch measurement information

     Members:
     'data: string'
          the measurement value encoded in base64

     Since: 2.12

     If: 'defined(TARGET_I386)'

 -- Command: query-sev-launch-measure

     Query the SEV guest launch information.

     Returns: The 'SevLaunchMeasureInfo' for the guest

     Since: 2.12

     Example:
          -> { "execute": "query-sev-launch-measure" }
          <- { "return": { "data": "4l8LXeNlSPUDlXPJG5966/8%YZ" } }

     If: 'defined(TARGET_I386)'

 -- Object: SevCapability

     The struct describes capability for a Secure Encrypted
     Virtualization feature.

     Members:
     'pdh: string'
          Platform Diffie-Hellman key (base64 encoded)
     'cert-chain: string'
          PDH certificate chain (base64 encoded)
     'cbitpos: int'
          C-bit location in page table entry
     'reduced-phys-bits: int'
          Number of physical Address bit reduction when SEV is enabled

     Since: 2.12

     If: 'defined(TARGET_I386)'

 -- Command: query-sev-capabilities

     This command is used to get the SEV capabilities, and is supported
     on AMD X86 platforms only.

     Returns: SevCapability objects.

     Since: 2.12

     Example:
          -> { "execute": "query-sev-capabilities" }
          <- { "return": { "pdh": "8CCDD8DDD", "cert-chain": "888CCCDDDEE",
                           "cbitpos": 47, "reduced-phys-bits": 5}}

     If: 'defined(TARGET_I386)'

 -- Command: dump-skeys

     Dump guest's storage keys

     Arguments:
     'filename: string'
          the path to the file to dump to
     This command is only supported on s390 architecture.

     Since: 2.5

     Example:
          -> { "execute": "dump-skeys",
               "arguments": { "filename": "/tmp/skeys" } }
          <- { "return": {} }

     If: 'defined(TARGET_S390X)'

 -- Object: GICCapability

     The struct describes capability for a specific GIC (Generic
     Interrupt Controller) version.  These bits are not only decided by
     QEMU/KVM software version, but also decided by the hardware that
     the program is running upon.

     Members:
     'version: int'
          version of GIC to be described.  Currently, only 2 and 3 are
          supported.
     'emulated: boolean'
          whether current QEMU/hardware supports emulated GIC device in
          user space.
     'kernel: boolean'
          whether current QEMU/hardware supports hardware accelerated
          GIC device in kernel.

     Since: 2.6

     If: 'defined(TARGET_ARM)'

 -- Command: query-gic-capabilities

     This command is ARM-only.  It will return a list of GICCapability
     objects that describe its capability bits.

     Returns: a list of GICCapability objects.

     Since: 2.6

     Example:
          -> { "execute": "query-gic-capabilities" }
          <- { "return": [{ "version": 2, "emulated": true, "kernel": false },
                          { "version": 3, "emulated": false, "kernel": true } ] }

     If: 'defined(TARGET_ARM)'

 -- Object: AudiodevPerDirectionOptions

     General audio backend options that are used for both playback and
     recording.

     Members:
     'mixing-engine: boolean' (optional)
          use QEMU's mixing engine to mix all streams inside QEMU and
          convert audio formats when not supported by the backend.  When
          set to off, fixed-settings must be also off (default on, since
          4.2)
     'fixed-settings: boolean' (optional)
          use fixed settings for host input/output.  When off,
          frequency, channels and format must not be specified (default
          true)
     'frequency: int' (optional)
          frequency to use when using fixed settings (default 44100)
     'channels: int' (optional)
          number of channels when using fixed settings (default 2)
     'voices: int' (optional)
          number of voices to use (default 1)
     'format: AudioFormat' (optional)
          sample format to use when using fixed settings (default s16)
     'buffer-length: int' (optional)
          the buffer length in microseconds

     Since: 4.0

 -- Object: AudiodevGenericOptions

     Generic driver-specific options.

     Members:
     'in: AudiodevPerDirectionOptions' (optional)
          options of the capture stream
     'out: AudiodevPerDirectionOptions' (optional)
          options of the playback stream

     Since: 4.0

 -- Object: AudiodevAlsaPerDirectionOptions

     Options of the ALSA backend that are used for both playback and
     recording.

     Members:
     'dev: string' (optional)
          the name of the ALSA device to use (default 'default')
     'period-length: int' (optional)
          the period length in microseconds
     'try-poll: boolean' (optional)
          attempt to use poll mode, falling back to non-polling access
          on failure (default true)
     The members of 'AudiodevPerDirectionOptions'

     Since: 4.0

 -- Object: AudiodevAlsaOptions

     Options of the ALSA audio backend.

     Members:
     'in: AudiodevAlsaPerDirectionOptions' (optional)
          options of the capture stream
     'out: AudiodevAlsaPerDirectionOptions' (optional)
          options of the playback stream
     'threshold: int' (optional)
          set the threshold (in microseconds) when playback starts

     Since: 4.0

 -- Object: AudiodevCoreaudioPerDirectionOptions

     Options of the Core Audio backend that are used for both playback
     and recording.

     Members:
     'buffer-count: int' (optional)
          number of buffers
     The members of 'AudiodevPerDirectionOptions'

     Since: 4.0

 -- Object: AudiodevCoreaudioOptions

     Options of the coreaudio audio backend.

     Members:
     'in: AudiodevCoreaudioPerDirectionOptions' (optional)
          options of the capture stream
     'out: AudiodevCoreaudioPerDirectionOptions' (optional)
          options of the playback stream

     Since: 4.0

 -- Object: AudiodevDsoundOptions

     Options of the DirectSound audio backend.

     Members:
     'in: AudiodevPerDirectionOptions' (optional)
          options of the capture stream
     'out: AudiodevPerDirectionOptions' (optional)
          options of the playback stream
     'latency: int' (optional)
          add extra latency to playback in microseconds (default 10000)

     Since: 4.0

 -- Object: AudiodevOssPerDirectionOptions

     Options of the OSS backend that are used for both playback and
     recording.

     Members:
     'dev: string' (optional)
          file name of the OSS device (default '/dev/dsp')
     'buffer-count: int' (optional)
          number of buffers
     'try-poll: boolean' (optional)
          attempt to use poll mode, falling back to non-polling access
          on failure (default true)
     The members of 'AudiodevPerDirectionOptions'

     Since: 4.0

 -- Object: AudiodevOssOptions

     Options of the OSS audio backend.

     Members:
     'in: AudiodevOssPerDirectionOptions' (optional)
          options of the capture stream
     'out: AudiodevOssPerDirectionOptions' (optional)
          options of the playback stream
     'try-mmap: boolean' (optional)
          try using memory-mapped access, falling back to
          non-memory-mapped access on failure (default true)
     'exclusive: boolean' (optional)
          open device in exclusive mode (vmix won't work) (default
          false)
     'dsp-policy: int' (optional)
          set the timing policy of the device (between 0 and 10, where
          smaller number means smaller latency but higher CPU usage) or
          -1 to use fragment mode (option ignored on some platforms)
          (default 5)

     Since: 4.0

 -- Object: AudiodevPaPerDirectionOptions

     Options of the Pulseaudio backend that are used for both playback
     and recording.

     Members:
     'name: string' (optional)
          name of the sink/source to use
     'stream-name: string' (optional)
          name of the PulseAudio stream created by qemu.  Can be used to
          identify the stream in PulseAudio when you create multiple
          PulseAudio devices or run multiple qemu instances (default:
          audiodev's id, since 4.2)
     'latency: int' (optional)
          latency you want PulseAudio to achieve in microseconds
          (default 15000)
     The members of 'AudiodevPerDirectionOptions'

     Since: 4.0

 -- Object: AudiodevPaOptions

     Options of the PulseAudio audio backend.

     Members:
     'in: AudiodevPaPerDirectionOptions' (optional)
          options of the capture stream
     'out: AudiodevPaPerDirectionOptions' (optional)
          options of the playback stream
     'server: string' (optional)
          PulseAudio server address (default: let PulseAudio choose)

     Since: 4.0

 -- Object: AudiodevWavOptions

     Options of the wav audio backend.

     Members:
     'in: AudiodevPerDirectionOptions' (optional)
          options of the capture stream
     'out: AudiodevPerDirectionOptions' (optional)
          options of the playback stream
     'path: string' (optional)
          name of the wav file to record (default 'qemu.wav')

     Since: 4.0

 -- Enum: AudioFormat

     An enumeration of possible audio formats.

     Values:
     'u8'
          Not documented
     's8'
          Not documented
     'u16'
          Not documented
     's16'
          Not documented
     'u32'
          Not documented
     's32'
          Not documented

     Since: 4.0

 -- Enum: AudiodevDriver

     An enumeration of possible audio backend drivers.

     Values:
     'none'
          Not documented
     'alsa'
          Not documented
     'coreaudio'
          Not documented
     'dsound'
          Not documented
     'oss'
          Not documented
     'pa'
          Not documented
     'sdl'
          Not documented
     'spice'
          Not documented
     'wav'
          Not documented

     Since: 4.0

 -- Object: Audiodev

     Options of an audio backend.

     Members:
     'id: string'
          identifier of the backend
     'driver: AudiodevDriver'
          the backend driver to use
     'timer-period: int' (optional)
          timer period (in microseconds, 0: use lowest possible)
     The members of 'AudiodevGenericOptions' when 'driver' is "none"
     The members of 'AudiodevAlsaOptions' when 'driver' is "alsa"
     The members of 'AudiodevCoreaudioOptions' when 'driver' is "coreaudio"
     The members of 'AudiodevDsoundOptions' when 'driver' is "dsound"
     The members of 'AudiodevOssOptions' when 'driver' is "oss"
     The members of 'AudiodevPaOptions' when 'driver' is "pa"
     The members of 'AudiodevGenericOptions' when 'driver' is "sdl"
     The members of 'AudiodevGenericOptions' when 'driver' is "spice"
     The members of 'AudiodevWavOptions' when 'driver' is "wav"

     Since: 4.0

Commands and Events Index
*************************

* Menu:

* ACPI_DEVICE_OST:                       API Reference.     (line 14398)
* add-fd:                                API Reference.     (line 14018)
* add_client:                            API Reference.     (line 13136)
* announce-self:                         API Reference.     (line  7873)
* balloon:                               API Reference.     (line 13821)
* BALLOON_CHANGE:                        API Reference.     (line 13347)
* block-commit:                          API Reference.     (line  2664)
* block-dirty-bitmap-add:                API Reference.     (line  3103)
* block-dirty-bitmap-clear:              API Reference.     (line  3136)
* block-dirty-bitmap-disable:            API Reference.     (line  3168)
* block-dirty-bitmap-enable:             API Reference.     (line  3153)
* block-dirty-bitmap-merge:              API Reference.     (line  3183)
* block-dirty-bitmap-remove:             API Reference.     (line  3119)
* block-job-cancel:                      API Reference.     (line  3594)
* block-job-complete:                    API Reference.     (line  3679)
* block-job-dismiss:                     API Reference.     (line  3707)
* block-job-finalize:                    API Reference.     (line  3727)
* block-job-pause:                       API Reference.     (line  3634)
* block-job-resume:                      API Reference.     (line  3658)
* block-job-set-speed:                   API Reference.     (line  3572)
* block-latency-histogram-set:           API Reference.     (line  1743)
* block-set-write-threshold:             API Reference.     (line  6111)
* block-stream:                          API Reference.     (line  3490)
* blockdev-add:                          API Reference.     (line  5000)
* blockdev-backup:                       API Reference.     (line  2773)
* blockdev-change-medium:                API Reference.     (line  5795)
* blockdev-close-tray:                   API Reference.     (line  5682)
* blockdev-create:                       API Reference.     (line  5626)
* blockdev-del:                          API Reference.     (line  5095)
* blockdev-insert-medium:                API Reference.     (line  5750)
* blockdev-mirror:                       API Reference.     (line  3228)
* blockdev-open-tray:                    API Reference.     (line  5639)
* blockdev-remove-medium:                API Reference.     (line  5711)
* blockdev-snapshot:                     API Reference.     (line  2602)
* blockdev-snapshot-delete-internal-sync: API Reference.    (line  6345)
* blockdev-snapshot-internal-sync:       API Reference.     (line  6316)
* blockdev-snapshot-sync:                API Reference.     (line  2583)
* BLOCK_IMAGE_CORRUPTED:                 API Reference.     (line  5861)
* BLOCK_IO_ERROR:                        API Reference.     (line  5902)
* BLOCK_JOB_CANCELLED:                   API Reference.     (line  5975)
* BLOCK_JOB_COMPLETED:                   API Reference.     (line  5943)
* BLOCK_JOB_ERROR:                       API Reference.     (line  6002)
* BLOCK_JOB_PENDING:                     API Reference.     (line  6053)
* BLOCK_JOB_READY:                       API Reference.     (line  6024)
* block_passwd:                          API Reference.     (line  2407)
* block_resize:                          API Reference.     (line  2423)
* block_set_io_throttle:                 API Reference.     (line  3299)
* BLOCK_WRITE_THRESHOLD:                 API Reference.     (line  6093)
* change:                                API Reference.     (line 13881)
* change-backing-file:                   API Reference.     (line  2636)
* change-vnc-password:                   API Reference.     (line  8902)
* chardev-add:                           API Reference.     (line  6997)
* chardev-change:                        API Reference.     (line  7028)
* chardev-remove:                        API Reference.     (line  7064)
* chardev-send-break:                    API Reference.     (line  7080)
* client_migrate_info:                   API Reference.     (line 10459)
* closefd:                               API Reference.     (line 13964)
* COLO_EXIT:                             API Reference.     (line 10584)
* cont:                                  API Reference.     (line 13750)
* cpu-add:                               API Reference.     (line 12116)
* device-list-properties:                API Reference.     (line 11673)
* device_add:                            API Reference.     (line 11690)
* device_del:                            API Reference.     (line 11725)
* DEVICE_DELETED:                        API Reference.     (line 11754)
* DEVICE_TRAY_MOVED:                     API Reference.     (line  6503)
* drive-backup:                          API Reference.     (line  2751)
* drive-mirror:                          API Reference.     (line  2947)
* dump-guest-memory:                     API Reference.     (line  7135)
* dump-skeys:                            API Reference.     (line 14627)
* DUMP_COMPLETED:                        API Reference.     (line  7237)
* eject:                                 API Reference.     (line  6386)
* expire_password:                       API Reference.     (line  8386)
* FAILOVER_NEGOTIATED:                   API Reference.     (line  7890)
* getfd:                                 API Reference.     (line 13942)
* GUEST_PANICKED:                        API Reference.     (line   661)
* human-monitor-command:                 API Reference.     (line 13843)
* inject-nmi:                            API Reference.     (line 13804)
* input-send-event:                      API Reference.     (line  9474)
* job-cancel:                            API Reference.     (line  1185)
* job-complete:                          API Reference.     (line  1204)
* job-dismiss:                           API Reference.     (line  1214)
* job-finalize:                          API Reference.     (line  1231)
* job-pause:                             API Reference.     (line  1151)
* job-resume:                            API Reference.     (line  1170)
* JOB_STATUS_CHANGE:                     API Reference.     (line  1139)
* memsave:                               API Reference.     (line 13697)
* MEM_UNPLUG_ERROR:                      API Reference.     (line 14336)
* migrate:                               API Reference.     (line 10740)
* migrate-continue:                      API Reference.     (line 10648)
* migrate-incoming:                      API Reference.     (line 10775)
* migrate-pause:                         API Reference.     (line 10941)
* migrate-recover:                       API Reference.     (line 10924)
* migrate-set-cache-size:                API Reference.     (line 10703)
* migrate-set-capabilities:              API Reference.     (line 10120)
* migrate-set-parameters:                API Reference.     (line 10339)
* migrate-start-postcopy:                API Reference.     (line 10487)
* migrate_cancel:                        API Reference.     (line 10633)
* migrate_set_downtime:                  API Reference.     (line 10665)
* migrate_set_speed:                     API Reference.     (line 10684)
* MIGRATION:                             API Reference.     (line 10499)
* MIGRATION_PASS:                        API Reference.     (line 10514)
* nbd-server-add:                        API Reference.     (line  6435)
* nbd-server-remove:                     API Reference.     (line  6478)
* nbd-server-start:                      API Reference.     (line  6411)
* nbd-server-stop:                       API Reference.     (line  6496)
* netdev_add:                            API Reference.     (line  7307)
* netdev_del:                            API Reference.     (line  7335)
* NIC_RX_FILTER_CHANGED:                 API Reference.     (line  7829)
* object-add:                            API Reference.     (line 11630)
* object-del:                            API Reference.     (line 11653)
* pmemsave:                              API Reference.     (line 13725)
* POWERDOWN:                             API Reference.     (line   518)
* PR_MANAGER_STATUS_CHANGED:             API Reference.     (line  6529)
* qmp_capabilities:                      API Reference.     (line 12987)
* qom-get:                               API Reference.     (line 11513)
* qom-list:                              API Reference.     (line 11490)
* qom-list-properties:                   API Reference.     (line 11614)
* qom-list-types:                        API Reference.     (line 11599)
* qom-set:                               API Reference.     (line 11562)
* query-acpi-ospm-status:                API Reference.     (line 14383)
* query-balloon:                         API Reference.     (line 13327)
* query-block:                           API Reference.     (line  1878)
* query-block-jobs:                      API Reference.     (line  2399)
* query-blockstats:                      API Reference.     (line  2160)
* query-chardev:                         API Reference.     (line  6645)
* query-chardev-backends:                API Reference.     (line  6685)
* query-colo-status:                     API Reference.     (line 10912)
* query-command-line-options:            API Reference.     (line 14226)
* query-commands:                        API Reference.     (line 13093)
* query-cpu-definitions:                 API Reference.     (line 12972)
* query-cpu-model-baseline:              API Reference.     (line 12810)
* query-cpu-model-comparison:            API Reference.     (line 12758)
* query-cpu-model-expansion:             API Reference.     (line 12873)
* query-cpus:                            API Reference.     (line 12010)
* query-cpus-fast:                       API Reference.     (line 12076)
* query-current-machine:                 API Reference.     (line 12183)
* query-display-options:                 API Reference.     (line  9673)
* query-dump:                            API Reference.     (line  7224)
* query-dump-guest-memory-capability:    API Reference.     (line  7266)
* query-events:                          API Reference.     (line 13243)
* query-fdsets:                          API Reference.     (line 14093)
* query-gic-capabilities:                API Reference.     (line 14667)
* query-hotpluggable-cpus:               API Reference.     (line 12594)
* query-iothreads:                       API Reference.     (line 13291)
* query-jobs:                            API Reference.     (line  1280)
* query-kvm:                             API Reference.     (line 13196)
* query-machines:                        API Reference.     (line 12165)
* query-memdev:                          API Reference.     (line 12521)
* query-memory-devices:                  API Reference.     (line 14316)
* query-memory-size-summary:             API Reference.     (line 13994)
* query-mice:                            API Reference.     (line  9010)
* query-migrate:                         API Reference.     (line  9912)
* query-migrate-cache-size:              API Reference.     (line 10725)
* query-migrate-capabilities:            API Reference.     (line 10134)
* query-migrate-parameters:              API Reference.     (line 10438)
* query-name:                            API Reference.     (line 13172)
* query-named-block-nodes:               API Reference.     (line  2795)
* query-pci:                             API Reference.     (line 13502)
* query-pr-managers:                     API Reference.     (line  6306)
* query-qmp-schema:                      API Reference.     (line 11212)
* query-rocker:                          API Reference.     (line  7955)
* query-rocker-of-dpa-flows:             API Reference.     (line  8134)
* query-rocker-of-dpa-groups:            API Reference.     (line  8198)
* query-rocker-ports:                    API Reference.     (line  8015)
* query-rx-filter:                       API Reference.     (line  7786)
* query-sev:                             API Reference.     (line 14550)
* query-sev-capabilities:                API Reference.     (line 14611)
* query-sev-launch-measure:              API Reference.     (line 14578)
* query-spice:                           API Reference.     (line  8548)
* query-status:                          API Reference.     (line   479)
* query-target:                          API Reference.     (line 12201)
* query-tpm:                             API Reference.     (line  8333)
* query-tpm-models:                      API Reference.     (line  8245)
* query-tpm-types:                       API Reference.     (line  8269)
* query-uuid:                            API Reference.     (line 13221)
* query-version:                         API Reference.     (line 13061)
* query-vm-generation-id:                API Reference.     (line 14457)
* query-vnc:                             API Reference.     (line  8864)
* query-vnc-servers:                     API Reference.     (line  8892)
* query-xen-replication-status:          API Reference.     (line 10866)
* quit:                                  API Reference.     (line 13644)
* QUORUM_FAILURE:                        API Reference.     (line  6563)
* QUORUM_REPORT_BAD:                     API Reference.     (line  6585)
* RDMA_GID_STATUS_CHANGED:               API Reference.     (line  7912)
* remove-fd:                             API Reference.     (line 14045)
* RESET:                                 API Reference.     (line   529)
* RESUME:                                API Reference.     (line   558)
* ringbuf-read:                          API Reference.     (line  6752)
* ringbuf-write:                         API Reference.     (line  6724)
* rtc-reset-reinjection:                 API Reference.     (line 14488)
* RTC_CHANGE:                            API Reference.     (line 14463)
* screendump:                            API Reference.     (line  8414)
* send-key:                              API Reference.     (line  9359)
* set-numa-node:                         API Reference.     (line 12644)
* set_link:                              API Reference.     (line  7283)
* set_password:                          API Reference.     (line  8361)
* SHUTDOWN:                              API Reference.     (line   493)
* SPICE_CONNECTED:                       API Reference.     (line  8590)
* SPICE_DISCONNECTED:                    API Reference.     (line  8637)
* SPICE_INITIALIZED:                     API Reference.     (line  8612)
* SPICE_MIGRATE_COMPLETED:               API Reference.     (line  8659)
* STOP:                                  API Reference.     (line   548)
* stop:                                  API Reference.     (line 13657)
* SUSPEND:                               API Reference.     (line   568)
* SUSPEND_DISK:                          API Reference.     (line   579)
* system_powerdown:                      API Reference.     (line 13682)
* system_reset:                          API Reference.     (line 13672)
* system_wakeup:                         API Reference.     (line 13786)
* trace-event-get-state:                 API Reference.     (line 11152)
* trace-event-set-state:                 API Reference.     (line 11180)
* transaction:                           API Reference.     (line 11049)
* UNPLUG_PRIMARY:                        API Reference.     (line 10953)
* VNC_CONNECTED:                         API Reference.     (line  8918)
* VNC_DISCONNECTED:                      API Reference.     (line  8968)
* VNC_INITIALIZED:                       API Reference.     (line  8944)
* VSERPORT_CHANGE:                       API Reference.     (line  7096)
* WAKEUP:                                API Reference.     (line   594)
* WATCHDOG:                              API Reference.     (line   605)
* watchdog-set-action:                   API Reference.     (line   651)
* x-blockdev-change:                     API Reference.     (line  6137)
* x-blockdev-reopen:                     API Reference.     (line  5049)
* x-blockdev-set-iothread:               API Reference.     (line  6191)
* x-colo-lost-heartbeat:                 API Reference.     (line 10619)
* x-debug-block-dirty-bitmap-sha256:     API Reference.     (line  3218)
* x-debug-query-block-graph:             API Reference.     (line  2941)
* x-exit-preconfig:                      API Reference.     (line 13768)
* xen-colo-do-checkpoint:                API Reference.     (line 10880)
* xen-load-devices-state:                API Reference.     (line 14429)
* xen-save-devices-state:                API Reference.     (line 10804)
* xen-set-global-dirty-log:              API Reference.     (line 13925)
* xen-set-replication:                   API Reference.     (line 10827)

Data Types Index
****************

* Menu:

* Abort:                                 API Reference.     (line 10972)
* ACPIOSTInfo:                           API Reference.     (line 14363)
* ACPISlotType:                          API Reference.     (line 14355)
* AcpiTableOptions:                      API Reference.     (line 14133)
* ActionCompletionMode:                  API Reference.     (line 10978)
* AddfdInfo:                             API Reference.     (line 14005)
* AnnounceParameters:                    API Reference.     (line  7849)
* Audiodev:                              API Reference.     (line 14926)
* AudiodevAlsaOptions:                   API Reference.     (line 14740)
* AudiodevAlsaPerDirectionOptions:       API Reference.     (line 14723)
* AudiodevCoreaudioOptions:              API Reference.     (line 14766)
* AudiodevCoreaudioPerDirectionOptions:  API Reference.     (line 14754)
* AudiodevDriver:                        API Reference.     (line 14900)
* AudiodevDsoundOptions:                 API Reference.     (line 14778)
* AudiodevGenericOptions:                API Reference.     (line 14711)
* AudiodevOssOptions:                    API Reference.     (line 14809)
* AudiodevOssPerDirectionOptions:        API Reference.     (line 14792)
* AudiodevPaOptions:                     API Reference.     (line 14852)
* AudiodevPaPerDirectionOptions:         API Reference.     (line 14832)
* AudiodevPerDirectionOptions:           API Reference.     (line 14683)
* AudiodevWavOptions:                    API Reference.     (line 14866)
* AudioFormat:                           API Reference.     (line 14880)
* BackupCommon:                          API Reference.     (line  2496)
* BalloonInfo:                           API Reference.     (line 13317)
* BiosAtaTranslation:                    API Reference.     (line  6228)
* BitmapSyncMode:                        API Reference.     (line  2322)
* BlkdebugEvent:                         API Reference.     (line  4246)
* BlkdebugInjectErrorOptions:            API Reference.     (line  4370)
* BlkdebugIOType:                        API Reference.     (line  4350)
* BlkdebugSetStateOptions:               API Reference.     (line  4397)
* BlockdevAioOptions:                    API Reference.     (line  3774)
* BlockdevBackup:                        API Reference.     (line  2574)
* BlockdevCacheInfo:                     API Reference.     (line  1475)
* BlockdevCacheOptions:                  API Reference.     (line  3786)
* BlockdevChangeReadOnlyMode:            API Reference.     (line  5780)
* BlockdevCreateOptions:                 API Reference.     (line  5599)
* BlockdevCreateOptionsFile:             API Reference.     (line  5125)
* BlockdevCreateOptionsGluster:          API Reference.     (line  5147)
* BlockdevCreateOptionsLUKS:             API Reference.     (line  5167)
* BlockdevCreateOptionsNfs:              API Reference.     (line  5187)
* BlockdevCreateOptionsParallels:        API Reference.     (line  5202)
* BlockdevCreateOptionsQcow:             API Reference.     (line  5220)
* BlockdevCreateOptionsQcow2:            API Reference.     (line  5253)
* BlockdevCreateOptionsQed:              API Reference.     (line  5301)
* BlockdevCreateOptionsRbd:              API Reference.     (line  5327)
* BlockdevCreateOptionsSheepdog:         API Reference.     (line  5468)
* BlockdevCreateOptionsSsh:              API Reference.     (line  5494)
* BlockdevCreateOptionsVdi:              API Reference.     (line  5509)
* BlockdevCreateOptionsVhdx:             API Reference.     (line  5537)
* BlockdevCreateOptionsVmdk:             API Reference.     (line  5382)
* BlockdevCreateOptionsVpc:              API Reference.     (line  5577)
* BlockdevDetectZeroesOptions:           API Reference.     (line  3756)
* BlockdevDiscardOptions:                API Reference.     (line  3744)
* BlockdevDriver:                        API Reference.     (line  3799)
* BlockDeviceInfo:                       API Reference.     (line  1489)
* BlockDeviceIoStatus:                   API Reference.     (line  1581)
* BlockDeviceMapEntry:                   API Reference.     (line  1595)
* BlockDeviceStats:                      API Reference.     (line  2014)
* BlockDeviceTimedStats:                 API Reference.     (line  1971)
* BlockdevOnError:                       API Reference.     (line  2279)
* BlockdevOptions:                       API Reference.     (line  4892)
* BlockdevOptionsBlkdebug:               API Reference.     (line  4413)
* BlockdevOptionsBlklogwrites:           API Reference.     (line  4457)
* BlockdevOptionsBlkreplay:              API Reference.     (line  4489)
* BlockdevOptionsBlkverify:              API Reference.     (line  4477)
* BlockdevOptionsCurlBase:               API Reference.     (line  4740)
* BlockdevOptionsCurlFtp:                API Reference.     (line  4803)
* BlockdevOptionsCurlFtps:               API Reference.     (line  4813)
* BlockdevOptionsCurlHttp:               API Reference.     (line  4766)
* BlockdevOptionsCurlHttps:              API Reference.     (line  4783)
* BlockdevOptionsFile:                   API Reference.     (line  3888)
* BlockdevOptionsGenericCOWFormat:       API Reference.     (line  4002)
* BlockdevOptionsGenericFormat:          API Reference.     (line  3978)
* BlockdevOptionsGluster:                API Reference.     (line  4530)
* BlockdevOptionsIscsi:                  API Reference.     (line  4576)
* BlockdevOptionsLUKS:                   API Reference.     (line  3989)
* BlockdevOptionsNbd:                    API Reference.     (line  4826)
* BlockdevOptionsNfs:                    API Reference.     (line  4713)
* BlockdevOptionsNull:                   API Reference.     (line  3927)
* BlockdevOptionsNVMe:                   API Reference.     (line  3944)
* BlockdevOptionsQcow:                   API Reference.     (line  4097)
* BlockdevOptionsQcow2:                  API Reference.     (line  4129)
* BlockdevOptionsQuorum:                 API Reference.     (line  4511)
* BlockdevOptionsRaw:                    API Reference.     (line  4852)
* BlockdevOptionsRbd:                    API Reference.     (line  4616)
* BlockdevOptionsReplication:            API Reference.     (line  4674)
* BlockdevOptionsSheepdog:               API Reference.     (line  4643)
* BlockdevOptionsSsh:                    API Reference.     (line  4231)
* BlockdevOptionsThrottle:               API Reference.     (line  4879)
* BlockdevOptionsVVFAT:                  API Reference.     (line  3956)
* BlockdevOptionsVxHS:                   API Reference.     (line  4865)
* BlockdevQcow2Encryption:               API Reference.     (line  4119)
* BlockdevQcow2EncryptionFormat:         API Reference.     (line  4109)
* BlockdevQcow2Version:                  API Reference.     (line  5241)
* BlockdevQcowEncryption:                API Reference.     (line  4088)
* BlockdevQcowEncryptionFormat:          API Reference.     (line  4080)
* BlockdevRef:                           API Reference.     (line  4972)
* BlockdevRefOrNull:                     API Reference.     (line  4984)
* BlockdevSnapshot:                      API Reference.     (line  2483)
* BlockdevSnapshotInternal:              API Reference.     (line  6278)
* BlockdevSnapshotSync:                  API Reference.     (line  2462)
* BlockdevVhdxSubformat:                 API Reference.     (line  5527)
* BlockdevVmdkAdapterType:               API Reference.     (line  5366)
* BlockdevVmdkSubformat:                 API Reference.     (line  5345)
* BlockdevVpcSubformat:                  API Reference.     (line  5567)
* BlockDirtyBitmap:                      API Reference.     (line  3045)
* BlockDirtyBitmapAdd:                   API Reference.     (line  3055)
* BlockDirtyBitmapMerge:                 API Reference.     (line  3089)
* BlockDirtyBitmapMergeSource:           API Reference.     (line  3078)
* BlockDirtyBitmapSha256:                API Reference.     (line  3208)
* BlockDirtyInfo:                        API Reference.     (line  1661)
* BlockErrorAction:                      API Reference.     (line  5847)
* BlockInfo:                             API Reference.     (line  1812)
* BlockIOThrottle:                       API Reference.     (line  3368)
* BlockJobInfo:                          API Reference.     (line  2355)
* BlockLatencyHistogramInfo:             API Reference.     (line  1723)
* BlockMeasureInfo:                      API Reference.     (line  1847)
* BlockPermission:                       API Reference.     (line  2879)
* BlockStats:                            API Reference.     (line  2132)
* BlockStatsSpecific:                    API Reference.     (line  2120)
* BlockStatsSpecificFile:                API Reference.     (line  2104)
* ChardevBackend:                        API Reference.     (line  6953)
* ChardevBackendInfo:                    API Reference.     (line  6675)
* ChardevCommon:                         API Reference.     (line  6783)
* ChardevFile:                           API Reference.     (line  6796)
* ChardevHostdev:                        API Reference.     (line  6812)
* ChardevInfo:                           API Reference.     (line  6626)
* ChardevMux:                            API Reference.     (line  6876)
* ChardevReturn:                         API Reference.     (line  6986)
* ChardevRingbuf:                        API Reference.     (line  6942)
* ChardevSocket:                         API Reference.     (line  6824)
* ChardevSpiceChannel:                   API Reference.     (line  6899)
* ChardevSpicePort:                      API Reference.     (line  6912)
* ChardevStdio:                          API Reference.     (line  6887)
* ChardevUdp:                            API Reference.     (line  6863)
* ChardevVC:                             API Reference.     (line  6925)
* COLOExitReason:                        API Reference.     (line 10601)
* COLOMessage:                           API Reference.     (line 10529)
* COLOMode:                              API Reference.     (line 10551)
* COLOStatus:                            API Reference.     (line 10895)
* CommandInfo:                           API Reference.     (line 13083)
* CommandLineOptionInfo:                 API Reference.     (line 14213)
* CommandLineParameterInfo:              API Reference.     (line 14197)
* CommandLineParameterType:              API Reference.     (line 14180)
* CompressionStats:                      API Reference.     (line  9791)
* CpuDefinitionInfo:                     API Reference.     (line 12919)
* CpuInfo:                               API Reference.     (line 11883)
* CpuInfoArch:                           API Reference.     (line 11858)
* CpuInfoFast:                           API Reference.     (line 12052)
* CpuInfoMIPS:                           API Reference.     (line 11952)
* CpuInfoPPC:                            API Reference.     (line 11942)
* CpuInfoRISCV:                          API Reference.     (line 11972)
* CpuInfoS390:                           API Reference.     (line 12000)
* CpuInfoSPARC:                          API Reference.     (line 11930)
* CpuInfoTricore:                        API Reference.     (line 11962)
* CpuInfoX86:                            API Reference.     (line 11920)
* CpuInstanceProperties:                 API Reference.     (line 12552)
* CpuModelBaselineInfo:                  API Reference.     (line 12725)
* CpuModelCompareInfo:                   API Reference.     (line 12737)
* CpuModelCompareResult:                 API Reference.     (line 12702)
* CpuModelExpansionInfo:                 API Reference.     (line 12860)
* CpuModelExpansionType:                 API Reference.     (line 12671)
* CpuModelInfo:                          API Reference.     (line 12653)
* CpuS390State:                          API Reference.     (line 11981)
* CurrentMachineParams:                  API Reference.     (line 12173)
* DataFormat:                            API Reference.     (line  6712)
* DirtyBitmapStatus:                     API Reference.     (line  1624)
* DisplayCurses:                         API Reference.     (line  9608)
* DisplayEGLHeadless:                    API Reference.     (line  9579)
* DisplayGLMode:                         API Reference.     (line  9590)
* DisplayGTK:                            API Reference.     (line  9562)
* DisplayOptions:                        API Reference.     (line  9654)
* DisplayType:                           API Reference.     (line  9618)
* DriveBackup:                           API Reference.     (line  2556)
* DriveMirror:                           API Reference.     (line  2971)
* DummyForceArrays:                      API Reference.     (line 12323)
* DumpGuestMemoryCapability:             API Reference.     (line  7256)
* DumpGuestMemoryFormat:                 API Reference.     (line  7116)
* DumpQueryResult:                       API Reference.     (line  7210)
* DumpStatus:                            API Reference.     (line  7194)
* EventInfo:                             API Reference.     (line 13233)
* FailoverStatus:                        API Reference.     (line 10565)
* FdsetFdInfo:                           API Reference.     (line 14069)
* FdsetInfo:                             API Reference.     (line 14081)
* FloppyDriveType:                       API Reference.     (line  6260)
* GICCapability:                         API Reference.     (line 14645)
* GrabToggleKeys:                        API Reference.     (line  9542)
* GuestPanicAction:                      API Reference.     (line   677)
* GuestPanicInformation:                 API Reference.     (line   701)
* GuestPanicInformationHyperV:           API Reference.     (line   713)
* GuestPanicInformationS390:             API Reference.     (line   751)
* GuestPanicInformationType:             API Reference.     (line   689)
* GuidInfo:                              API Reference.     (line 14447)
* HmatCacheAssociativity:                API Reference.     (line 12419)
* HmatCacheWritePolicy:                  API Reference.     (line 12438)
* HmatLBDataType:                        API Reference.     (line 12367)
* HmatLBMemoryHierarchy:                 API Reference.     (line 12346)
* HostMemPolicy:                         API Reference.     (line 12481)
* HotpluggableCPU:                       API Reference.     (line 12579)
* ImageCheck:                            API Reference.     (line  1416)
* ImageInfo:                             API Reference.     (line  1379)
* ImageInfoSpecific:                     API Reference.     (line  1365)
* ImageInfoSpecificQCow2:                API Reference.     (line  1324)
* ImageInfoSpecificQCow2Encryption:      API Reference.     (line  1316)
* ImageInfoSpecificQCow2EncryptionBase:  API Reference.     (line  1308)
* ImageInfoSpecificVmdk:                 API Reference.     (line  1351)
* InetSocketAddress:                     API Reference.     (line   272)
* InetSocketAddressBase:                 API Reference.     (line   264)
* InputAxis:                             API Reference.     (line  9406)
* InputBtnEvent:                         API Reference.     (line  9430)
* InputButton:                           API Reference.     (line  9384)
* InputEvent:                            API Reference.     (line  9455)
* InputKeyEvent:                         API Reference.     (line  9418)
* InputMoveEvent:                        API Reference.     (line  9442)
* IoOperationType:                       API Reference.     (line   117)
* IOThreadInfo:                          API Reference.     (line 13270)
* IscsiHeaderDigest:                     API Reference.     (line  4560)
* IscsiTransport:                        API Reference.     (line  4548)
* JobInfo:                               API Reference.     (line  1249)
* JobStatus:                             API Reference.     (line  1070)
* JobType:                               API Reference.     (line  1052)
* JobVerb:                               API Reference.     (line  1117)
* JSONType:                              API Reference.     (line 11303)
* KeyValue:                              API Reference.     (line  9347)
* KvmInfo:                               API Reference.     (line 13184)
* LostTickPolicy:                        API Reference.     (line 13117)
* MachineInfo:                           API Reference.     (line 12136)
* MapEntry:                              API Reference.     (line  1453)
* Memdev:                                API Reference.     (line 12499)
* MemoryDeviceInfo:                      API Reference.     (line 14301)
* MemoryInfo:                            API Reference.     (line 13980)
* MigrateSetParameters:                  API Reference.     (line 10252)
* MigrationCapability:                   API Reference.     (line 10030)
* MigrationCapabilityStatus:             API Reference.     (line 10108)
* MigrationInfo:                         API Reference.     (line  9850)
* MigrationParameter:                    API Reference.     (line 10155)
* MigrationParameters:                   API Reference.     (line 10351)
* MigrationStats:                        API Reference.     (line  9733)
* MigrationStatus:                       API Reference.     (line  9810)
* MirrorCopyMode:                        API Reference.     (line  2340)
* MirrorSyncMode:                        API Reference.     (line  2302)
* MouseInfo:                             API Reference.     (line  8994)
* NameInfo:                              API Reference.     (line 13162)
* NbdServerRemoveMode:                   API Reference.     (line  6458)
* NetClientDriver:                       API Reference.     (line  7605)
* Netdev:                                API Reference.     (line  7637)
* NetdevBridgeOptions:                   API Reference.     (line  7548)
* NetdevHubPortOptions:                  API Reference.     (line  7560)
* NetdevL2TPv3Options:                   API Reference.     (line  7493)
* NetdevNetmapOptions:                   API Reference.     (line  7573)
* NetdevSocketOptions:                   API Reference.     (line  7472)
* NetdevTapOptions:                      API Reference.     (line  7432)
* NetdevUserOptions:                     API Reference.     (line  7370)
* NetdevVdeOptions:                      API Reference.     (line  7532)
* NetdevVhostUserOptions:                API Reference.     (line  7590)
* NetFilterDirection:                    API Reference.     (line  7722)
* NetLegacy:                             API Reference.     (line  7661)
* NetLegacyNicOptions:                   API Reference.     (line  7352)
* NetLegacyOptions:                      API Reference.     (line  7703)
* NetLegacyOptionsType:                  API Reference.     (line  7677)
* NetworkAddressFamily:                  API Reference.     (line   246)
* NewImageMode:                          API Reference.     (line  2447)
* NFSServer:                             API Reference.     (line  4701)
* NFSTransport:                          API Reference.     (line  4691)
* NumaCpuOptions:                        API Reference.     (line 12334)
* NumaDistOptions:                       API Reference.     (line 12267)
* NumaHmatCacheOptions:                  API Reference.     (line 12457)
* NumaHmatLBOptions:                     API Reference.     (line 12391)
* NumaNodeOptions:                       API Reference.     (line 12240)
* NumaOptions:                           API Reference.     (line 12225)
* NumaOptionsType:                       API Reference.     (line 12209)
* ObjectPropertyInfo:                    API Reference.     (line 11465)
* ObjectTypeInfo:                        API Reference.     (line 11584)
* OffAutoPCIBAR:                         API Reference.     (line   181)
* OnOffAuto:                             API Reference.     (line   129)
* OnOffSplit:                            API Reference.     (line   143)
* PCDIMMDeviceInfo:                      API Reference.     (line 14260)
* PciBridgeInfo:                         API Reference.     (line 13421)
* PciBusInfo:                            API Reference.     (line 13399)
* PciDeviceClass:                        API Reference.     (line 13433)
* PciDeviceId:                           API Reference.     (line 13445)
* PciDeviceInfo:                         API Reference.     (line 13461)
* PCIELinkSpeed:                         API Reference.     (line   205)
* PCIELinkWidth:                         API Reference.     (line   221)
* PciInfo:                               API Reference.     (line 13490)
* PciMemoryRange:                        API Reference.     (line 13366)
* PciMemoryRegion:                       API Reference.     (line 13378)
* PreallocMode:                          API Reference.     (line  6073)
* PRManagerInfo:                         API Reference.     (line  6293)
* QapiErrorClass:                        API Reference.     (line    94)
* QAuthZListFormat:                      API Reference.     (line  9693)
* QAuthZListPolicy:                      API Reference.     (line  9681)
* QAuthZListRule:                        API Reference.     (line  9705)
* QAuthZListRuleListHack:                API Reference.     (line  9719)
* Qcow2BitmapInfo:                       API Reference.     (line  1709)
* Qcow2BitmapInfoFlags:                  API Reference.     (line  1692)
* Qcow2OverlapCheckFlags:                API Reference.     (line  4034)
* Qcow2OverlapCheckMode:                 API Reference.     (line  4016)
* Qcow2OverlapChecks:                    API Reference.     (line  4066)
* QCryptoBlockCreateOptions:             API Reference.     (line   968)
* QCryptoBlockCreateOptionsLUKS:         API Reference.     (line   930)
* QCryptoBlockFormat:                    API Reference.     (line   885)
* QCryptoBlockInfo:                      API Reference.     (line  1033)
* QCryptoBlockInfoBase:                  API Reference.     (line   980)
* QCryptoBlockInfoLUKS:                  API Reference.     (line  1007)
* QCryptoBlockInfoLUKSSlot:              API Reference.     (line   991)
* QCryptoBlockOpenOptions:               API Reference.     (line   956)
* QCryptoBlockOptionsBase:               API Reference.     (line   898)
* QCryptoBlockOptionsLUKS:               API Reference.     (line   919)
* QCryptoBlockOptionsQCow:               API Reference.     (line   908)
* QCryptoCipherAlgorithm:                API Reference.     (line   819)
* QCryptoCipherMode:                     API Reference.     (line   851)
* QCryptoHashAlgorithm:                  API Reference.     (line   797)
* QCryptoIVGenAlgorithm:                 API Reference.     (line   867)
* QCryptoSecretFormat:                   API Reference.     (line   784)
* QCryptoTLSCredsEndpoint:               API Reference.     (line   770)
* QKeyCode:                              API Reference.     (line  9036)
* QMPCapability:                         API Reference.     (line 13015)
* QuorumOpType:                          API Reference.     (line  6549)
* QuorumReadPattern:                     API Reference.     (line  4499)
* RbdAuthMode:                           API Reference.     (line  4606)
* ReplayMode:                            API Reference.     (line 14413)
* ReplicationMode:                       API Reference.     (line  4660)
* ReplicationStatus:                     API Reference.     (line 10851)
* RockerOfDpaFlow:                       API Reference.     (line  8116)
* RockerOfDpaFlowAction:                 API Reference.     (line  8093)
* RockerOfDpaFlowKey:                    API Reference.     (line  8035)
* RockerOfDpaFlowMask:                   API Reference.     (line  8068)
* RockerOfDpaGroup:                      API Reference.     (line  8161)
* RockerPort:                            API Reference.     (line  7995)
* RockerPortAutoneg:                     API Reference.     (line  7983)
* RockerPortDuplex:                      API Reference.     (line  7971)
* RockerSwitch:                          API Reference.     (line  7941)
* RunState:                              API Reference.     (line   382)
* RxFilterInfo:                          API Reference.     (line  7754)
* RxState:                               API Reference.     (line  7740)
* S390CrashReason:                       API Reference.     (line   731)
* SchemaInfo:                            API Reference.     (line 11270)
* SchemaInfoAlternate:                   API Reference.     (line 11406)
* SchemaInfoAlternateMember:             API Reference.     (line 11419)
* SchemaInfoArray:                       API Reference.     (line 11340)
* SchemaInfoBuiltin:                     API Reference.     (line 11293)
* SchemaInfoCommand:                     API Reference.     (line 11429)
* SchemaInfoEnum:                        API Reference.     (line 11329)
* SchemaInfoEvent:                       API Reference.     (line 11451)
* SchemaInfoObject:                      API Reference.     (line 11351)
* SchemaInfoObjectMember:                API Reference.     (line 11374)
* SchemaInfoObjectVariant:               API Reference.     (line 11393)
* SchemaMetaType:                        API Reference.     (line 11247)
* SevCapability:                         API Reference.     (line 14592)
* SevInfo:                               API Reference.     (line 14526)
* SevLaunchMeasureInfo:                  API Reference.     (line 14566)
* SevState:                              API Reference.     (line 14502)
* SheepdogRedundancy:                    API Reference.     (line  5458)
* SheepdogRedundancyErasureCoded:        API Reference.     (line  5445)
* SheepdogRedundancyFull:                API Reference.     (line  5435)
* SheepdogRedundancyType:                API Reference.     (line  5422)
* ShutdownCause:                         API Reference.     (line   433)
* SnapshotInfo:                          API Reference.     (line  1288)
* SocketAddress:                         API Reference.     (line   364)
* SocketAddressLegacy:                   API Reference.     (line   323)
* SocketAddressType:                     API Reference.     (line   344)
* SpiceBasicInfo:                        API Reference.     (line  8443)
* SpiceChannel:                          API Reference.     (line  8472)
* SpiceInfo:                             API Reference.     (line  8514)
* SpiceQueryMouseMode:                   API Reference.     (line  8495)
* SpiceServerInfo:                       API Reference.     (line  8459)
* SshHostKeyCheck:                       API Reference.     (line  4222)
* SshHostKeyCheckHashType:               API Reference.     (line  4196)
* SshHostKeyCheckMode:                   API Reference.     (line  4180)
* SshHostKeyHash:                        API Reference.     (line  4209)
* StatusInfo:                            API Reference.     (line   463)
* String:                                API Reference.     (line   157)
* StrOrNull:                             API Reference.     (line   167)
* SysEmuTarget:                          API Reference.     (line 11778)
* TargetInfo:                            API Reference.     (line 12191)
* ThrottleLimits:                        API Reference.     (line  3435)
* TPMEmulatorOptions:                    API Reference.     (line  8294)
* TPMInfo:                               API Reference.     (line  8319)
* TpmModel:                              API Reference.     (line  8233)
* TPMPassthroughOptions:                 API Reference.     (line  8281)
* TpmType:                               API Reference.     (line  8257)
* TpmTypeOptions:                        API Reference.     (line  8304)
* TraceEventInfo:                        API Reference.     (line 11136)
* TraceEventState:                       API Reference.     (line 11122)
* TransactionAction:                     API Reference.     (line 10996)
* TransactionProperties:                 API Reference.     (line 11037)
* UnixSocketAddress:                     API Reference.     (line   298)
* UuidInfo:                              API Reference.     (line 13208)
* VersionInfo:                           API Reference.     (line 13042)
* VersionTriple:                         API Reference.     (line 13028)
* VirtioPMEMDeviceInfo:                  API Reference.     (line 14285)
* VncBasicInfo:                          API Reference.     (line  8674)
* VncClientInfo:                         API Reference.     (line  8708)
* VncInfo:                               API Reference.     (line  8725)
* VncInfo2:                              API Reference.     (line  8836)
* VncPrimaryAuth:                        API Reference.     (line  8764)
* VncServerInfo:                         API Reference.     (line  8694)
* VncServerInfo2:                        API Reference.     (line  8820)
* VncVencryptSubAuth:                    API Reference.     (line  8792)
* VsockSocketAddress:                    API Reference.     (line   308)
* WatchdogAction:                        API Reference.     (line   626)
* X86CPUFeatureWordInfo:                 API Reference.     (line 12307)
* X86CPURegister32:                      API Reference.     (line 12283)
* XBZRLECacheStats:                      API Reference.     (line  9771)
* XDbgBlockGraph:                        API Reference.     (line  2929)
* XDbgBlockGraphEdge:                    API Reference.     (line  2910)
* XDbgBlockGraphNode:                    API Reference.     (line  2862)
* XDbgBlockGraphNodeType:                API Reference.     (line  2850)

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