Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
3956 lines
106 KiB
Haxe
3956 lines
106 KiB
Haxe
HXCOMM QMP dispatch table and documentation
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HXCOMM Text between SQMP and EQMP is copied to the QMP documentation file and
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HXCOMM does not show up in the other formats.
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SQMP
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QMP Supported Commands
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----------------------
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This document describes all commands currently supported by QMP.
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Most of the time their usage is exactly the same as in the user Monitor, this
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means that any other document which also describe commands (the manpage,
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QEMU's manual, etc) can and should be consulted.
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QMP has two types of commands: regular and query commands. Regular commands
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usually change the Virtual Machine's state someway, while query commands just
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return information. The sections below are divided accordingly.
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It's important to observe that all communication examples are formatted in
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a reader-friendly way, so that they're easier to understand. However, in real
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protocol usage, they're emitted as a single line.
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Also, the following notation is used to denote data flow:
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-> data issued by the Client
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<- Server data response
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Please, refer to the QMP specification (QMP/qmp-spec.txt) for detailed
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information on the Server command and response formats.
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NOTE: This document is temporary and will be replaced soon.
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1. Stability Considerations
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===========================
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The current QMP command set (described in this file) may be useful for a
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number of use cases, however it's limited and several commands have bad
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defined semantics, specially with regard to command completion.
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These problems are going to be solved incrementally in the next QEMU releases
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and we're going to establish a deprecation policy for badly defined commands.
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If you're planning to adopt QMP, please observe the following:
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1. The deprecation policy will take effect and be documented soon, please
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check the documentation of each used command as soon as a new release of
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QEMU is available
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2. DO NOT rely on anything which is not explicit documented
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3. Errors, in special, are not documented. Applications should NOT check
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for specific errors classes or data (it's strongly recommended to only
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check for the "error" key)
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2. Regular Commands
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===================
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Server's responses in the examples below are always a success response, please
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refer to the QMP specification for more details on error responses.
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EQMP
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{
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.name = "quit",
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.args_type = "",
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.mhandler.cmd_new = qmp_marshal_input_quit,
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},
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SQMP
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quit
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----
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Quit the emulator.
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Arguments: None.
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Example:
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-> { "execute": "quit" }
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<- { "return": {} }
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EQMP
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{
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.name = "eject",
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.args_type = "force:-f,device:B",
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.mhandler.cmd_new = qmp_marshal_input_eject,
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},
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SQMP
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eject
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-----
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Eject a removable medium.
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Arguments:
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- force: force ejection (json-bool, optional)
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- device: device name (json-string)
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Example:
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-> { "execute": "eject", "arguments": { "device": "ide1-cd0" } }
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<- { "return": {} }
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Note: The "force" argument defaults to false.
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EQMP
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{
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.name = "change",
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.args_type = "device:B,target:F,arg:s?",
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.mhandler.cmd_new = qmp_marshal_input_change,
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},
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SQMP
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change
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------
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Change a removable medium or VNC configuration.
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Arguments:
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- "device": device name (json-string)
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- "target": filename or item (json-string)
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- "arg": additional argument (json-string, optional)
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Examples:
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1. Change a removable medium
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-> { "execute": "change",
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"arguments": { "device": "ide1-cd0",
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"target": "/srv/images/Fedora-12-x86_64-DVD.iso" } }
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<- { "return": {} }
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2. Change VNC password
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-> { "execute": "change",
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"arguments": { "device": "vnc", "target": "password",
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"arg": "foobar1" } }
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<- { "return": {} }
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EQMP
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{
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.name = "screendump",
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.args_type = "filename:F",
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.mhandler.cmd_new = qmp_marshal_input_screendump,
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},
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SQMP
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screendump
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----------
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Save screen into PPM image.
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Arguments:
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- "filename": file path (json-string)
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Example:
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-> { "execute": "screendump", "arguments": { "filename": "/tmp/image" } }
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<- { "return": {} }
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EQMP
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{
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.name = "stop",
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.args_type = "",
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.mhandler.cmd_new = qmp_marshal_input_stop,
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},
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SQMP
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stop
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----
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Stop the emulator.
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Arguments: None.
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Example:
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-> { "execute": "stop" }
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<- { "return": {} }
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EQMP
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{
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.name = "cont",
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.args_type = "",
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.mhandler.cmd_new = qmp_marshal_input_cont,
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},
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SQMP
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cont
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----
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Resume emulation.
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Arguments: None.
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Example:
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-> { "execute": "cont" }
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<- { "return": {} }
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EQMP
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{
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.name = "system_wakeup",
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.args_type = "",
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.mhandler.cmd_new = qmp_marshal_input_system_wakeup,
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},
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SQMP
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system_wakeup
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-------------
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Wakeup guest from suspend.
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Arguments: None.
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Example:
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-> { "execute": "system_wakeup" }
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<- { "return": {} }
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EQMP
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{
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.name = "system_reset",
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.args_type = "",
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.mhandler.cmd_new = qmp_marshal_input_system_reset,
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},
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SQMP
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system_reset
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------------
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Reset the system.
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Arguments: None.
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Example:
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-> { "execute": "system_reset" }
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<- { "return": {} }
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EQMP
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{
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.name = "system_powerdown",
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.args_type = "",
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.mhandler.cmd_new = qmp_marshal_input_system_powerdown,
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},
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SQMP
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system_powerdown
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----------------
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Send system power down event.
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Arguments: None.
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Example:
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-> { "execute": "system_powerdown" }
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<- { "return": {} }
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EQMP
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{
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.name = "device_add",
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.args_type = "device:O",
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.params = "driver[,prop=value][,...]",
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.help = "add device, like -device on the command line",
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.user_print = monitor_user_noop,
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.mhandler.cmd_new = do_device_add,
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},
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SQMP
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device_add
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----------
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Add a device.
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Arguments:
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- "driver": the name of the new device's driver (json-string)
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- "bus": the device's parent bus (device tree path, json-string, optional)
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- "id": the device's ID, must be unique (json-string)
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- device properties
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Example:
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-> { "execute": "device_add", "arguments": { "driver": "e1000", "id": "net1" } }
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<- { "return": {} }
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Notes:
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(1) For detailed information about this command, please refer to the
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'docs/qdev-device-use.txt' file.
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(2) It's possible to list device properties by running QEMU with the
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"-device DEVICE,\?" command-line argument, where DEVICE is the device's name
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EQMP
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{
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.name = "device_del",
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.args_type = "id:s",
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.mhandler.cmd_new = qmp_marshal_input_device_del,
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},
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SQMP
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device_del
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----------
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Remove a device.
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Arguments:
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- "id": the device's ID (json-string)
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Example:
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-> { "execute": "device_del", "arguments": { "id": "net1" } }
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<- { "return": {} }
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EQMP
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{
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.name = "send-key",
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.args_type = "keys:O,hold-time:i?",
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.mhandler.cmd_new = qmp_marshal_input_send_key,
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},
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SQMP
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send-key
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----------
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Send keys to VM.
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Arguments:
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keys array:
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- "key": key sequence (a json-array of key union values,
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union can be number or qcode enum)
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- hold-time: time to delay key up events, milliseconds. Defaults to 100
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(json-int, optional)
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Example:
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-> { "execute": "send-key",
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"arguments": { "keys": [ { "type": "qcode", "data": "ctrl" },
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{ "type": "qcode", "data": "alt" },
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{ "type": "qcode", "data": "delete" } ] } }
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<- { "return": {} }
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EQMP
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{
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.name = "cpu",
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.args_type = "index:i",
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.mhandler.cmd_new = qmp_marshal_input_cpu,
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},
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SQMP
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cpu
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---
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Set the default CPU.
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Arguments:
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- "index": the CPU's index (json-int)
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Example:
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-> { "execute": "cpu", "arguments": { "index": 0 } }
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<- { "return": {} }
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Note: CPUs' indexes are obtained with the 'query-cpus' command.
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EQMP
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{
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.name = "cpu-add",
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.args_type = "id:i",
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.mhandler.cmd_new = qmp_marshal_input_cpu_add,
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},
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SQMP
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cpu-add
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-------
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Adds virtual cpu
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Arguments:
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- "id": cpu id (json-int)
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Example:
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-> { "execute": "cpu-add", "arguments": { "id": 2 } }
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<- { "return": {} }
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EQMP
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{
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.name = "memsave",
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.args_type = "val:l,size:i,filename:s,cpu:i?",
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.mhandler.cmd_new = qmp_marshal_input_memsave,
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},
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SQMP
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memsave
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-------
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Save to disk virtual memory dump starting at 'val' of size 'size'.
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Arguments:
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- "val": the starting address (json-int)
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- "size": the memory size, in bytes (json-int)
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- "filename": file path (json-string)
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- "cpu": virtual CPU index (json-int, optional)
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Example:
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-> { "execute": "memsave",
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"arguments": { "val": 10,
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"size": 100,
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"filename": "/tmp/virtual-mem-dump" } }
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<- { "return": {} }
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EQMP
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{
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.name = "pmemsave",
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.args_type = "val:l,size:i,filename:s",
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.mhandler.cmd_new = qmp_marshal_input_pmemsave,
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},
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SQMP
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pmemsave
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--------
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Save to disk physical memory dump starting at 'val' of size 'size'.
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Arguments:
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- "val": the starting address (json-int)
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- "size": the memory size, in bytes (json-int)
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- "filename": file path (json-string)
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Example:
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-> { "execute": "pmemsave",
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"arguments": { "val": 10,
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"size": 100,
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"filename": "/tmp/physical-mem-dump" } }
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<- { "return": {} }
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EQMP
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{
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.name = "inject-nmi",
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.args_type = "",
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.mhandler.cmd_new = qmp_marshal_input_inject_nmi,
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},
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SQMP
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inject-nmi
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----------
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Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
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Arguments: None.
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Example:
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-> { "execute": "inject-nmi" }
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<- { "return": {} }
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Note: inject-nmi fails when the guest doesn't support injecting.
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EQMP
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{
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.name = "ringbuf-write",
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.args_type = "device:s,data:s,format:s?",
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.mhandler.cmd_new = qmp_marshal_input_ringbuf_write,
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},
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SQMP
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ringbuf-write
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-------------
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Write to a ring buffer character device.
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Arguments:
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- "device": ring buffer character device name (json-string)
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- "data": data to write (json-string)
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- "format": data format (json-string, optional)
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- Possible values: "utf8" (default), "base64"
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Bug: invalid base64 is currently not rejected.
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Whitespace *is* invalid.
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Example:
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-> { "execute": "ringbuf-write",
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"arguments": { "device": "foo",
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"data": "abcdefgh",
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"format": "utf8" } }
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<- { "return": {} }
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EQMP
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{
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.name = "ringbuf-read",
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.args_type = "device:s,size:i,format:s?",
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.mhandler.cmd_new = qmp_marshal_input_ringbuf_read,
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},
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SQMP
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ringbuf-read
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-------------
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Read from a ring buffer character device.
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Arguments:
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- "device": ring buffer character device name (json-string)
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- "size": how many bytes to read at most (json-int)
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- Number of data bytes, not number of characters in encoded data
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- "format": data format (json-string, optional)
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- Possible values: "utf8" (default), "base64"
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- Naturally, format "utf8" works only when the ring buffer
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contains valid UTF-8 text. Invalid UTF-8 sequences get
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replaced. Bug: replacement doesn't work. Bug: can screw
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up on encountering NUL characters, after the ring buffer
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lost data, and when reading stops because the size limit
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is reached.
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Example:
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-> { "execute": "ringbuf-read",
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"arguments": { "device": "foo",
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"size": 1000,
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"format": "utf8" } }
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<- {"return": "abcdefgh"}
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EQMP
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{
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.name = "xen-save-devices-state",
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.args_type = "filename:F",
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.mhandler.cmd_new = qmp_marshal_input_xen_save_devices_state,
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},
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SQMP
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xen-save-devices-state
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-------
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Save the state of all devices to file. The RAM and the block devices
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of the VM are not saved by this command.
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Arguments:
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- "filename": the file to save the state of the devices to as binary
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data. See xen-save-devices-state.txt for a description of the binary
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format.
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Example:
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-> { "execute": "xen-save-devices-state",
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"arguments": { "filename": "/tmp/save" } }
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<- { "return": {} }
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EQMP
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{
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.name = "xen-set-global-dirty-log",
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.args_type = "enable:b",
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.mhandler.cmd_new = qmp_marshal_input_xen_set_global_dirty_log,
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},
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SQMP
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xen-set-global-dirty-log
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-------
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Enable or disable the global dirty log mode.
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Arguments:
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- "enable": Enable it or disable it.
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Example:
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-> { "execute": "xen-set-global-dirty-log",
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"arguments": { "enable": true } }
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<- { "return": {} }
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EQMP
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{
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.name = "migrate",
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.args_type = "detach:-d,blk:-b,inc:-i,uri:s",
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.mhandler.cmd_new = qmp_marshal_input_migrate,
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},
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SQMP
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migrate
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|
-------
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Migrate to URI.
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Arguments:
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- "blk": block migration, full disk copy (json-bool, optional)
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- "inc": incremental disk copy (json-bool, optional)
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- "uri": Destination URI (json-string)
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Example:
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-> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } }
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<- { "return": {} }
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Notes:
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(1) The 'query-migrate' command should be used to check migration's progress
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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
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "migrate_cancel",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_migrate_cancel,
|
|
},
|
|
|
|
SQMP
|
|
migrate_cancel
|
|
--------------
|
|
|
|
Cancel the current migration.
|
|
|
|
Arguments: None.
|
|
|
|
Example:
|
|
|
|
-> { "execute": "migrate_cancel" }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
{
|
|
.name = "migrate-set-cache-size",
|
|
.args_type = "value:o",
|
|
.mhandler.cmd_new = qmp_marshal_input_migrate_set_cache_size,
|
|
},
|
|
|
|
SQMP
|
|
migrate-set-cache-size
|
|
----------------------
|
|
|
|
Set cache size to be used by XBZRLE migration, the cache size will be rounded
|
|
down to the nearest power of 2
|
|
|
|
Arguments:
|
|
|
|
- "value": cache size in bytes (json-int)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "migrate-set-cache-size", "arguments": { "value": 536870912 } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
{
|
|
.name = "query-migrate-cache-size",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_migrate_cache_size,
|
|
},
|
|
|
|
SQMP
|
|
query-migrate-cache-size
|
|
------------------------
|
|
|
|
Show cache size to be used by XBZRLE migration
|
|
|
|
returns a json-object with the following information:
|
|
- "size" : json-int
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-migrate-cache-size" }
|
|
<- { "return": 67108864 }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "migrate_set_speed",
|
|
.args_type = "value:o",
|
|
.mhandler.cmd_new = qmp_marshal_input_migrate_set_speed,
|
|
},
|
|
|
|
SQMP
|
|
migrate_set_speed
|
|
-----------------
|
|
|
|
Set maximum speed for migrations.
|
|
|
|
Arguments:
|
|
|
|
- "value": maximum speed, in bytes per second (json-int)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "migrate_set_downtime",
|
|
.args_type = "value:T",
|
|
.mhandler.cmd_new = qmp_marshal_input_migrate_set_downtime,
|
|
},
|
|
|
|
SQMP
|
|
migrate_set_downtime
|
|
--------------------
|
|
|
|
Set maximum tolerated downtime (in seconds) for migrations.
|
|
|
|
Arguments:
|
|
|
|
- "value": maximum downtime (json-number)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "client_migrate_info",
|
|
.args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
|
|
.params = "protocol hostname port tls-port cert-subject",
|
|
.help = "send migration info to spice/vnc client",
|
|
.user_print = monitor_user_noop,
|
|
.mhandler.cmd_async = client_migrate_info,
|
|
.flags = MONITOR_CMD_ASYNC,
|
|
},
|
|
|
|
SQMP
|
|
client_migrate_info
|
|
------------------
|
|
|
|
Set the spice/vnc connection info for the migration target. The spice/vnc
|
|
server will ask the spice/vnc client to automatically reconnect using the
|
|
new parameters (if specified) once the vm migration finished successfully.
|
|
|
|
Arguments:
|
|
|
|
- "protocol": protocol: "spice" or "vnc" (json-string)
|
|
- "hostname": migration target hostname (json-string)
|
|
- "port": spice/vnc tcp port for plaintext channels (json-int, optional)
|
|
- "tls-port": spice tcp port for tls-secured channels (json-int, optional)
|
|
- "cert-subject": server certificate subject (json-string, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "client_migrate_info",
|
|
"arguments": { "protocol": "spice",
|
|
"hostname": "virt42.lab.kraxel.org",
|
|
"port": 1234 } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "dump-guest-memory",
|
|
.args_type = "paging:b,protocol:s,begin:i?,end:i?,format:s?",
|
|
.params = "-p protocol [begin] [length] [format]",
|
|
.help = "dump guest memory to file",
|
|
.user_print = monitor_user_noop,
|
|
.mhandler.cmd_new = qmp_marshal_input_dump_guest_memory,
|
|
},
|
|
|
|
SQMP
|
|
dump
|
|
|
|
|
|
Dump guest memory to file. The file can be processed with crash or gdb.
|
|
|
|
Arguments:
|
|
|
|
- "paging": do paging to get guest's memory mapping (json-bool)
|
|
- "protocol": destination file(started with "file:") or destination file
|
|
descriptor (started with "fd:") (json-string)
|
|
- "begin": the starting physical address. It's optional, and should be specified
|
|
with length together (json-int)
|
|
- "length": the memory size, in bytes. It's optional, and should be specified
|
|
with begin together (json-int)
|
|
- "format": the format of guest memory dump. It's optional, and can be
|
|
elf|kdump-zlib|kdump-lzo|kdump-snappy, but non-elf formats will
|
|
conflict with paging and filter, ie. begin and length (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "dump-guest-memory", "arguments": { "protocol": "fd:dump" } }
|
|
<- { "return": {} }
|
|
|
|
Notes:
|
|
|
|
(1) All boolean arguments default to false
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-dump-guest-memory-capability",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_dump_guest_memory_capability,
|
|
},
|
|
|
|
SQMP
|
|
query-dump-guest-memory-capability
|
|
----------
|
|
|
|
Show available formats for 'dump-guest-memory'
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-dump-guest-memory-capability" }
|
|
<- { "return": { "formats":
|
|
["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "netdev_add",
|
|
.args_type = "netdev:O",
|
|
.mhandler.cmd_new = qmp_netdev_add,
|
|
},
|
|
|
|
SQMP
|
|
netdev_add
|
|
----------
|
|
|
|
Add host network device.
|
|
|
|
Arguments:
|
|
|
|
- "type": the device type, "tap", "user", ... (json-string)
|
|
- "id": the device's ID, must be unique (json-string)
|
|
- device options
|
|
|
|
Example:
|
|
|
|
-> { "execute": "netdev_add", "arguments": { "type": "user", "id": "netdev1" } }
|
|
<- { "return": {} }
|
|
|
|
Note: The supported device options are the same ones supported by the '-netdev'
|
|
command-line argument, which are listed in the '-help' output or QEMU's
|
|
manual
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "netdev_del",
|
|
.args_type = "id:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_netdev_del,
|
|
},
|
|
|
|
SQMP
|
|
netdev_del
|
|
----------
|
|
|
|
Remove host network device.
|
|
|
|
Arguments:
|
|
|
|
- "id": the device's ID, must be unique (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "netdev_del", "arguments": { "id": "netdev1" } }
|
|
<- { "return": {} }
|
|
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "object-add",
|
|
.args_type = "qom-type:s,id:s,props:q?",
|
|
.mhandler.cmd_new = qmp_object_add,
|
|
},
|
|
|
|
SQMP
|
|
object-add
|
|
----------
|
|
|
|
Create QOM object.
|
|
|
|
Arguments:
|
|
|
|
- "qom-type": the object's QOM type, i.e. the class name (json-string)
|
|
- "id": the object's ID, must be unique (json-string)
|
|
- "props": a dictionary of object property values (optional, json-dict)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "object-add", "arguments": { "qom-type": "rng-random", "id": "rng1",
|
|
"props": { "filename": "/dev/hwrng" } } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "object-del",
|
|
.args_type = "id:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_object_del,
|
|
},
|
|
|
|
SQMP
|
|
object-del
|
|
----------
|
|
|
|
Remove QOM object.
|
|
|
|
Arguments:
|
|
|
|
- "id": the object's ID (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "object-del", "arguments": { "id": "rng1" } }
|
|
<- { "return": {} }
|
|
|
|
|
|
EQMP
|
|
|
|
|
|
{
|
|
.name = "block_resize",
|
|
.args_type = "device:s?,node-name:s?,size:o",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_resize,
|
|
},
|
|
|
|
SQMP
|
|
block_resize
|
|
------------
|
|
|
|
Resize a block image while a guest is running.
|
|
|
|
Arguments:
|
|
|
|
- "device": the device's ID, must be unique (json-string)
|
|
- "node-name": the node name in the block driver state graph (json-string)
|
|
- "size": new size
|
|
|
|
Example:
|
|
|
|
-> { "execute": "block_resize", "arguments": { "device": "scratch", "size": 1073741824 } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "block-stream",
|
|
.args_type = "device:B,base:s?,speed:o?,backing-file:s?,on-error:s?",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_stream,
|
|
},
|
|
|
|
{
|
|
.name = "block-commit",
|
|
.args_type = "device:B,base:s?,top:s?,backing-file:s?,speed:o?",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_commit,
|
|
},
|
|
|
|
SQMP
|
|
block-commit
|
|
------------
|
|
|
|
Live commit of data from overlay image nodes into backing nodes - i.e., writes
|
|
data between 'top' and 'base' into 'base'.
|
|
|
|
Arguments:
|
|
|
|
- "device": The device's ID, must be unique (json-string)
|
|
- "base": The file name of the backing image to write data into.
|
|
If not specified, this is the deepest backing image
|
|
(json-string, optional)
|
|
- "top": The file 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. (json-string, optional)
|
|
|
|
- backing-file: 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.
|
|
(json-string, optional) (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.
|
|
(json-string)
|
|
- "speed": the maximum speed, in bytes per second (json-int, optional)
|
|
|
|
|
|
Example:
|
|
|
|
-> { "execute": "block-commit", "arguments": { "device": "virtio0",
|
|
"top": "/tmp/snap1.qcow2" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "drive-backup",
|
|
.args_type = "sync:s,device:B,target:s,speed:i?,mode:s?,format:s?,"
|
|
"on-source-error:s?,on-target-error:s?",
|
|
.mhandler.cmd_new = qmp_marshal_input_drive_backup,
|
|
},
|
|
|
|
SQMP
|
|
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:
|
|
|
|
- "device": the name of the device which should be copied.
|
|
(json-string)
|
|
- "target": 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.
|
|
(json-string)
|
|
- "format": the format of the new destination, default is to probe if 'mode' is
|
|
'existing', else the format of the source
|
|
(json-string, optional)
|
|
- "sync": what parts of the disk image should be copied to the destination;
|
|
possibilities include "full" for all the disk, "top" for only the sectors
|
|
allocated in the topmost image, or "none" to only replicate new I/O
|
|
(MirrorSyncMode).
|
|
- "mode": whether and how QEMU should create a new image
|
|
(NewImageMode, optional, default 'absolute-paths')
|
|
- "speed": the maximum speed, in bytes per second (json-int, optional)
|
|
- "on-source-error": 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.
|
|
(BlockdevOnError, optional)
|
|
- "on-target-error": the action to take on an error on the target, default
|
|
'report' (no limitations, since this applies to
|
|
a different block device than device).
|
|
(BlockdevOnError, optional)
|
|
|
|
Example:
|
|
-> { "execute": "drive-backup", "arguments": { "device": "drive0",
|
|
"sync": "full",
|
|
"target": "backup.img" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "blockdev-backup",
|
|
.args_type = "sync:s,device:B,target:B,speed:i?,"
|
|
"on-source-error:s?,on-target-error:s?",
|
|
.mhandler.cmd_new = qmp_marshal_input_blockdev_backup,
|
|
},
|
|
|
|
SQMP
|
|
blockdev-backup
|
|
---------------
|
|
|
|
The device version of drive-backup: this command takes an existing named device
|
|
as backup target.
|
|
|
|
Arguments:
|
|
|
|
- "device": the name of the device which should be copied.
|
|
(json-string)
|
|
- "target": the name of the backup target device. (json-string)
|
|
- "sync": what parts of the disk image should be copied to the destination;
|
|
possibilities include "full" for all the disk, "top" for only the
|
|
sectors allocated in the topmost image, or "none" to only replicate
|
|
new I/O (MirrorSyncMode).
|
|
- "speed": the maximum speed, in bytes per second (json-int, optional)
|
|
- "on-source-error": 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.
|
|
(BlockdevOnError, optional)
|
|
- "on-target-error": the action to take on an error on the target, default
|
|
'report' (no limitations, since this applies to
|
|
a different block device than device).
|
|
(BlockdevOnError, optional)
|
|
|
|
Example:
|
|
-> { "execute": "blockdev-backup", "arguments": { "device": "src-id",
|
|
"sync": "full",
|
|
"target": "tgt-id" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "block-job-set-speed",
|
|
.args_type = "device:B,speed:o",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_job_set_speed,
|
|
},
|
|
|
|
{
|
|
.name = "block-job-cancel",
|
|
.args_type = "device:B,force:b?",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_job_cancel,
|
|
},
|
|
{
|
|
.name = "block-job-pause",
|
|
.args_type = "device:B",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_job_pause,
|
|
},
|
|
{
|
|
.name = "block-job-resume",
|
|
.args_type = "device:B",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_job_resume,
|
|
},
|
|
{
|
|
.name = "block-job-complete",
|
|
.args_type = "device:B",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_job_complete,
|
|
},
|
|
{
|
|
.name = "transaction",
|
|
.args_type = "actions:q",
|
|
.mhandler.cmd_new = qmp_marshal_input_transaction,
|
|
},
|
|
|
|
SQMP
|
|
transaction
|
|
-----------
|
|
|
|
Atomically operate on one or more block devices. The only supported operations
|
|
for now are drive-backup, internal and external snapshotting. A list of
|
|
dictionaries is accepted, that contains the actions to be performed.
|
|
If there is any failure performing any of the operations, all operations
|
|
for the group are abandoned.
|
|
|
|
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:
|
|
- "type": the operation to perform. The only supported
|
|
value is "blockdev-snapshot-sync". (json-string)
|
|
- "data": a dictionary. The contents depend on the value
|
|
of "type". When "type" is "blockdev-snapshot-sync":
|
|
- "device": device name to snapshot (json-string)
|
|
- "node-name": graph node name to snapshot (json-string)
|
|
- "snapshot-file": name of new image file (json-string)
|
|
- "snapshot-node-name": graph node name of the new snapshot (json-string)
|
|
- "format": format of new image (json-string, optional)
|
|
- "mode": whether and how QEMU should create the snapshot file
|
|
(NewImageMode, optional, default "absolute-paths")
|
|
When "type" is "blockdev-snapshot-internal-sync":
|
|
- "device": device name to snapshot (json-string)
|
|
- "name": name of the new snapshot (json-string)
|
|
|
|
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": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "blockdev-snapshot-sync",
|
|
.args_type = "device:s?,node-name:s?,snapshot-file:s,snapshot-node-name:s?,format:s?,mode:s?",
|
|
.mhandler.cmd_new = qmp_marshal_input_blockdev_snapshot_sync,
|
|
},
|
|
|
|
SQMP
|
|
blockdev-snapshot-sync
|
|
----------------------
|
|
|
|
Synchronous snapshot of a block device. snapshot-file specifies the
|
|
target of the new image. If the file exists, or if it is a device, the
|
|
snapshot will be created in the existing file/device. If does not
|
|
exist, a new file will be created. format specifies the format of the
|
|
snapshot image, default is qcow2.
|
|
|
|
Arguments:
|
|
|
|
- "device": device name to snapshot (json-string)
|
|
- "node-name": graph node name to snapshot (json-string)
|
|
- "snapshot-file": name of new image file (json-string)
|
|
- "snapshot-node-name": graph node name of the new snapshot (json-string)
|
|
- "mode": whether and how QEMU should create the snapshot file
|
|
(NewImageMode, optional, default "absolute-paths")
|
|
- "format": format of new image (json-string, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "blockdev-snapshot-sync", "arguments": { "device": "ide-hd0",
|
|
"snapshot-file":
|
|
"/some/place/my-image",
|
|
"format": "qcow2" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "blockdev-snapshot-internal-sync",
|
|
.args_type = "device:B,name:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_blockdev_snapshot_internal_sync,
|
|
},
|
|
|
|
SQMP
|
|
blockdev-snapshot-internal-sync
|
|
-------------------------------
|
|
|
|
Synchronously take an internal snapshot of a block device when the format of
|
|
image used supports it. If the name is an empty string, or a snapshot with
|
|
name already exists, the operation will fail.
|
|
|
|
Arguments:
|
|
|
|
- "device": device name to snapshot (json-string)
|
|
- "name": name of the new snapshot (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "blockdev-snapshot-internal-sync",
|
|
"arguments": { "device": "ide-hd0",
|
|
"name": "snapshot0" }
|
|
}
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "blockdev-snapshot-delete-internal-sync",
|
|
.args_type = "device:B,id:s?,name:s?",
|
|
.mhandler.cmd_new =
|
|
qmp_marshal_input_blockdev_snapshot_delete_internal_sync,
|
|
},
|
|
|
|
SQMP
|
|
blockdev-snapshot-delete-internal-sync
|
|
--------------------------------------
|
|
|
|
Synchronously delete an internal snapshot of a block device when the format of
|
|
image used supports it. The snapshot is identified by name or id or both. One
|
|
of name or id is required. If the snapshot is not found, the operation will
|
|
fail.
|
|
|
|
Arguments:
|
|
|
|
- "device": device name (json-string)
|
|
- "id": ID of the snapshot (json-string, optional)
|
|
- "name": name of the snapshot (json-string, optional)
|
|
|
|
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
|
|
}
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "drive-mirror",
|
|
.args_type = "sync:s,device:B,target:s,speed:i?,mode:s?,format:s?,"
|
|
"node-name:s?,replaces:s?,"
|
|
"on-source-error:s?,on-target-error:s?,"
|
|
"granularity:i?,buf-size:i?",
|
|
.mhandler.cmd_new = qmp_marshal_input_drive_mirror,
|
|
},
|
|
|
|
SQMP
|
|
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:
|
|
|
|
- "device": device name to operate on (json-string)
|
|
- "target": name of new image file (json-string)
|
|
- "format": format of new image (json-string, optional)
|
|
- "node-name": the name of the new block driver state in the node graph
|
|
(json-string, optional)
|
|
- "replaces": the block driver node name to replace when finished
|
|
(json-string, optional)
|
|
- "mode": how an image file should be created into the target
|
|
file/device (NewImageMode, optional, default 'absolute-paths')
|
|
- "speed": maximum speed of the streaming job, in bytes per second
|
|
(json-int)
|
|
- "granularity": granularity of the dirty bitmap, in bytes (json-int, optional)
|
|
- "buf_size": maximum amount of data in flight from source to target, in bytes
|
|
(json-int, default 10M)
|
|
- "sync": what parts of the disk image should be copied to the destination;
|
|
possibilities include "full" for all the disk, "top" for only the sectors
|
|
allocated in the topmost image, or "none" to only replicate new I/O
|
|
(MirrorSyncMode).
|
|
- "on-source-error": the action to take on an error on the source
|
|
(BlockdevOnError, default 'report')
|
|
- "on-target-error": the action to take on an error on the target
|
|
(BlockdevOnError, default 'report')
|
|
|
|
The default value of the granularity is the image cluster size clamped
|
|
between 4096 and 65536, if the image format defines one. If the format
|
|
does not define a cluster size, the default value of the granularity
|
|
is 65536.
|
|
|
|
|
|
Example:
|
|
|
|
-> { "execute": "drive-mirror", "arguments": { "device": "ide-hd0",
|
|
"target": "/some/place/my-image",
|
|
"sync": "full",
|
|
"format": "qcow2" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "change-backing-file",
|
|
.args_type = "device:s,image-node-name:s,backing-file:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_change_backing_file,
|
|
},
|
|
|
|
SQMP
|
|
change-backing-file
|
|
-------------------
|
|
Since: 2.1
|
|
|
|
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": The name of the block driver state node of the
|
|
image to modify. The "device" is argument is used to
|
|
verify "image-node-name" is in the chain described by
|
|
"device".
|
|
(json-string, optional)
|
|
|
|
- "device": The name of the device.
|
|
(json-string)
|
|
|
|
- "backing-file": 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.
|
|
(json-string)
|
|
|
|
Returns: Nothing on success
|
|
If "device" does not exist or cannot be determined, DeviceNotFound
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "balloon",
|
|
.args_type = "value:M",
|
|
.mhandler.cmd_new = qmp_marshal_input_balloon,
|
|
},
|
|
|
|
SQMP
|
|
balloon
|
|
-------
|
|
|
|
Request VM to change its memory allocation (in bytes).
|
|
|
|
Arguments:
|
|
|
|
- "value": New memory allocation (json-int)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "balloon", "arguments": { "value": 536870912 } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "set_link",
|
|
.args_type = "name:s,up:b",
|
|
.mhandler.cmd_new = qmp_marshal_input_set_link,
|
|
},
|
|
|
|
SQMP
|
|
set_link
|
|
--------
|
|
|
|
Change the link status of a network adapter.
|
|
|
|
Arguments:
|
|
|
|
- "name": network device name (json-string)
|
|
- "up": status is up (json-bool)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "set_link", "arguments": { "name": "e1000.0", "up": false } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "getfd",
|
|
.args_type = "fdname:s",
|
|
.params = "getfd name",
|
|
.help = "receive a file descriptor via SCM rights and assign it a name",
|
|
.mhandler.cmd_new = qmp_marshal_input_getfd,
|
|
},
|
|
|
|
SQMP
|
|
getfd
|
|
-----
|
|
|
|
Receive a file descriptor via SCM rights and assign it a name.
|
|
|
|
Arguments:
|
|
|
|
- "fdname": file descriptor name (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "getfd", "arguments": { "fdname": "fd1" } }
|
|
<- { "return": {} }
|
|
|
|
Notes:
|
|
|
|
(1) If the name specified by the "fdname" argument already exists,
|
|
the file descriptor assigned to it will be closed and replaced
|
|
by the received file descriptor.
|
|
(2) The 'closefd' command can be used to explicitly close the file
|
|
descriptor when it is no longer needed.
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "closefd",
|
|
.args_type = "fdname:s",
|
|
.params = "closefd name",
|
|
.help = "close a file descriptor previously passed via SCM rights",
|
|
.mhandler.cmd_new = qmp_marshal_input_closefd,
|
|
},
|
|
|
|
SQMP
|
|
closefd
|
|
-------
|
|
|
|
Close a file descriptor previously passed via SCM rights.
|
|
|
|
Arguments:
|
|
|
|
- "fdname": file descriptor name (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "closefd", "arguments": { "fdname": "fd1" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "add-fd",
|
|
.args_type = "fdset-id:i?,opaque:s?",
|
|
.params = "add-fd fdset-id opaque",
|
|
.help = "Add a file descriptor, that was passed via SCM rights, to an fd set",
|
|
.mhandler.cmd_new = qmp_marshal_input_add_fd,
|
|
},
|
|
|
|
SQMP
|
|
add-fd
|
|
-------
|
|
|
|
Add a file descriptor, that was passed via SCM rights, to an fd set.
|
|
|
|
Arguments:
|
|
|
|
- "fdset-id": The ID of the fd set to add the file descriptor to.
|
|
(json-int, optional)
|
|
- "opaque": A free-form string that can be used to describe the fd.
|
|
(json-string, optional)
|
|
|
|
Return a json-object with the following information:
|
|
|
|
- "fdset-id": The ID of the fd set that the fd was added to. (json-int)
|
|
- "fd": The file descriptor that was received via SCM rights and added to the
|
|
fd set. (json-int)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "add-fd", "arguments": { "fdset-id": 1 } }
|
|
<- { "return": { "fdset-id": 1, "fd": 3 } }
|
|
|
|
Notes:
|
|
|
|
(1) The list of fd sets is shared by all monitor connections.
|
|
(2) If "fdset-id" is not specified, a new fd set will be created.
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "remove-fd",
|
|
.args_type = "fdset-id:i,fd:i?",
|
|
.params = "remove-fd fdset-id fd",
|
|
.help = "Remove a file descriptor from an fd set",
|
|
.mhandler.cmd_new = qmp_marshal_input_remove_fd,
|
|
},
|
|
|
|
SQMP
|
|
remove-fd
|
|
---------
|
|
|
|
Remove a file descriptor from an fd set.
|
|
|
|
Arguments:
|
|
|
|
- "fdset-id": The ID of the fd set that the file descriptor belongs to.
|
|
(json-int)
|
|
- "fd": The file descriptor that is to be removed. (json-int, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "remove-fd", "arguments": { "fdset-id": 1, "fd": 3 } }
|
|
<- { "return": {} }
|
|
|
|
Notes:
|
|
|
|
(1) The list of fd sets is shared by all monitor connections.
|
|
(2) If "fd" is not specified, all file descriptors in "fdset-id" will be
|
|
removed.
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-fdsets",
|
|
.args_type = "",
|
|
.help = "Return information describing all fd sets",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_fdsets,
|
|
},
|
|
|
|
SQMP
|
|
query-fdsets
|
|
-------------
|
|
|
|
Return information describing all fd sets.
|
|
|
|
Arguments: None
|
|
|
|
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
|
|
}
|
|
]
|
|
}
|
|
|
|
Note: The list of fd sets is shared by all monitor connections.
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "block_passwd",
|
|
.args_type = "device:s?,node-name:s?,password:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_passwd,
|
|
},
|
|
|
|
SQMP
|
|
block_passwd
|
|
------------
|
|
|
|
Set the password of encrypted block devices.
|
|
|
|
Arguments:
|
|
|
|
- "device": device name (json-string)
|
|
- "node-name": name in the block driver state graph (json-string)
|
|
- "password": password (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "block_passwd", "arguments": { "device": "ide0-hd0",
|
|
"password": "12345" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "block_set_io_throttle",
|
|
.args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l,bps_max:l?,bps_rd_max:l?,bps_wr_max:l?,iops_max:l?,iops_rd_max:l?,iops_wr_max:l?,iops_size:l?",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_set_io_throttle,
|
|
},
|
|
|
|
SQMP
|
|
block_set_io_throttle
|
|
------------
|
|
|
|
Change I/O throttle limits for a block drive.
|
|
|
|
Arguments:
|
|
|
|
- "device": device name (json-string)
|
|
- "bps": total throughput limit in bytes per second (json-int)
|
|
- "bps_rd": read throughput limit in bytes per second (json-int)
|
|
- "bps_wr": write throughput limit in bytes per second (json-int)
|
|
- "iops": total I/O operations per second (json-int)
|
|
- "iops_rd": read I/O operations per second (json-int)
|
|
- "iops_wr": write I/O operations per second (json-int)
|
|
- "bps_max": total max in bytes (json-int)
|
|
- "bps_rd_max": read max in bytes (json-int)
|
|
- "bps_wr_max": write max in bytes (json-int)
|
|
- "iops_max": total I/O operations max (json-int)
|
|
- "iops_rd_max": read I/O operations max (json-int)
|
|
- "iops_wr_max": write I/O operations max (json-int)
|
|
- "iops_size": I/O size in bytes when limiting (json-int)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "block_set_io_throttle", "arguments": { "device": "virtio0",
|
|
"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,
|
|
"iops_size": 0 } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "set_password",
|
|
.args_type = "protocol:s,password:s,connected:s?",
|
|
.mhandler.cmd_new = qmp_marshal_input_set_password,
|
|
},
|
|
|
|
SQMP
|
|
set_password
|
|
------------
|
|
|
|
Set the password for vnc/spice protocols.
|
|
|
|
Arguments:
|
|
|
|
- "protocol": protocol name (json-string)
|
|
- "password": password (json-string)
|
|
- "connected": [ keep | disconnect | fail ] (json-string, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "set_password", "arguments": { "protocol": "vnc",
|
|
"password": "secret" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "expire_password",
|
|
.args_type = "protocol:s,time:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_expire_password,
|
|
},
|
|
|
|
SQMP
|
|
expire_password
|
|
---------------
|
|
|
|
Set the password expire time for vnc/spice protocols.
|
|
|
|
Arguments:
|
|
|
|
- "protocol": protocol name (json-string)
|
|
- "time": [ now | never | +secs | secs ] (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "expire_password", "arguments": { "protocol": "vnc",
|
|
"time": "+60" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "add_client",
|
|
.args_type = "protocol:s,fdname:s,skipauth:b?,tls:b?",
|
|
.mhandler.cmd_new = qmp_marshal_input_add_client,
|
|
},
|
|
|
|
SQMP
|
|
add_client
|
|
----------
|
|
|
|
Add a graphics client
|
|
|
|
Arguments:
|
|
|
|
- "protocol": protocol name (json-string)
|
|
- "fdname": file descriptor name (json-string)
|
|
- "skipauth": whether to skip authentication (json-bool, optional)
|
|
- "tls": whether to perform TLS (json-bool, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "add_client", "arguments": { "protocol": "vnc",
|
|
"fdname": "myclient" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
{
|
|
.name = "qmp_capabilities",
|
|
.args_type = "",
|
|
.params = "",
|
|
.help = "enable QMP capabilities",
|
|
.user_print = monitor_user_noop,
|
|
.mhandler.cmd_new = do_qmp_capabilities,
|
|
},
|
|
|
|
SQMP
|
|
qmp_capabilities
|
|
----------------
|
|
|
|
Enable QMP capabilities.
|
|
|
|
Arguments: None.
|
|
|
|
Example:
|
|
|
|
-> { "execute": "qmp_capabilities" }
|
|
<- { "return": {} }
|
|
|
|
Note: This command must be issued before issuing any other command.
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "human-monitor-command",
|
|
.args_type = "command-line:s,cpu-index:i?",
|
|
.mhandler.cmd_new = qmp_marshal_input_human_monitor_command,
|
|
},
|
|
|
|
SQMP
|
|
human-monitor-command
|
|
---------------------
|
|
|
|
Execute a Human Monitor command.
|
|
|
|
Arguments:
|
|
|
|
- command-line: the command name and its arguments, just like the
|
|
Human Monitor's shell (json-string)
|
|
- cpu-index: select the CPU number to be used by commands which access CPU
|
|
data, like 'info registers'. The Monitor selects CPU 0 if this
|
|
argument is not provided (json-int, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "human-monitor-command", "arguments": { "command-line": "info kvm" } }
|
|
<- { "return": "kvm support: enabled\r\n" }
|
|
|
|
Notes:
|
|
|
|
(1) The Human Monitor is NOT an stable interface, 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
|
|
|
|
(2) Limitations:
|
|
|
|
o This command is stateless, this means that commands that depend
|
|
on state information (such as getfd) might not work
|
|
|
|
o Commands that prompt the user for data (eg. 'cont' when the block
|
|
device is encrypted) don't currently work
|
|
|
|
3. Query Commands
|
|
=================
|
|
|
|
HXCOMM Each query command below is inside a SQMP/EQMP section, do NOT change
|
|
HXCOMM this! We will possibly move query commands definitions inside those
|
|
HXCOMM sections, just like regular commands.
|
|
|
|
EQMP
|
|
|
|
SQMP
|
|
query-version
|
|
-------------
|
|
|
|
Show QEMU version.
|
|
|
|
Return a json-object with the following information:
|
|
|
|
- "qemu": A json-object containing three integer values:
|
|
- "major": QEMU's major version (json-int)
|
|
- "minor": QEMU's minor version (json-int)
|
|
- "micro": QEMU's micro version (json-int)
|
|
- "package": package's version (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-version" }
|
|
<- {
|
|
"return":{
|
|
"qemu":{
|
|
"major":0,
|
|
"minor":11,
|
|
"micro":5
|
|
},
|
|
"package":""
|
|
}
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-version",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_version,
|
|
},
|
|
|
|
SQMP
|
|
query-commands
|
|
--------------
|
|
|
|
List QMP available commands.
|
|
|
|
Each command is represented by a json-object, the returned value is a json-array
|
|
of all commands.
|
|
|
|
Each json-object contain:
|
|
|
|
- "name": command's name (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-commands" }
|
|
<- {
|
|
"return":[
|
|
{
|
|
"name":"query-balloon"
|
|
},
|
|
{
|
|
"name":"system_powerdown"
|
|
}
|
|
]
|
|
}
|
|
|
|
Note: This example has been shortened as the real response is too long.
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-commands",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_commands,
|
|
},
|
|
|
|
SQMP
|
|
query-events
|
|
--------------
|
|
|
|
List QMP available events.
|
|
|
|
Each event is represented by a json-object, the returned value is a json-array
|
|
of all events.
|
|
|
|
Each json-object contains:
|
|
|
|
- "name": event's name (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-events" }
|
|
<- {
|
|
"return":[
|
|
{
|
|
"name":"SHUTDOWN"
|
|
},
|
|
{
|
|
"name":"RESET"
|
|
}
|
|
]
|
|
}
|
|
|
|
Note: This example has been shortened as the real response is too long.
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-events",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_events,
|
|
},
|
|
|
|
SQMP
|
|
query-chardev
|
|
-------------
|
|
|
|
Each device is represented by a json-object. The returned value is a json-array
|
|
of all devices.
|
|
|
|
Each json-object contain the following:
|
|
|
|
- "label": device's label (json-string)
|
|
- "filename": device's file (json-string)
|
|
- "frontend-open": open/closed state of the frontend device attached to this
|
|
backend (json-bool)
|
|
|
|
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
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-chardev",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_chardev,
|
|
},
|
|
|
|
SQMP
|
|
query-chardev-backends
|
|
-------------
|
|
|
|
List available character device backends.
|
|
|
|
Each backend is represented by a json-object, the returned value is a json-array
|
|
of all backends.
|
|
|
|
Each json-object contains:
|
|
|
|
- "name": backend name (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-chardev-backends" }
|
|
<- {
|
|
"return":[
|
|
{
|
|
"name":"udp"
|
|
},
|
|
{
|
|
"name":"tcp"
|
|
},
|
|
{
|
|
"name":"unix"
|
|
},
|
|
{
|
|
"name":"spiceport"
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-chardev-backends",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_chardev_backends,
|
|
},
|
|
|
|
SQMP
|
|
query-block
|
|
-----------
|
|
|
|
Show the block devices.
|
|
|
|
Each block device information is stored in a json-object and the returned value
|
|
is a json-array of all devices.
|
|
|
|
Each json-object contain the following:
|
|
|
|
- "device": device name (json-string)
|
|
- "type": device type (json-string)
|
|
- deprecated, retained for backward compatibility
|
|
- Possible values: "unknown"
|
|
- "removable": true if the device is removable, false otherwise (json-bool)
|
|
- "locked": true if the device is locked, false otherwise (json-bool)
|
|
- "tray_open": only present if removable, true if the device has a tray,
|
|
and it is open (json-bool)
|
|
- "inserted": only present if the device is inserted, it is a json-object
|
|
containing the following:
|
|
- "file": device file name (json-string)
|
|
- "ro": true if read-only, false otherwise (json-bool)
|
|
- "drv": driver format name (json-string)
|
|
- Possible values: "blkdebug", "bochs", "cloop", "dmg",
|
|
"file", "file", "ftp", "ftps", "host_cdrom",
|
|
"host_device", "host_floppy", "http", "https",
|
|
"nbd", "parallels", "qcow", "qcow2", "raw",
|
|
"tftp", "vdi", "vmdk", "vpc", "vvfat"
|
|
- "backing_file": backing file name (json-string, optional)
|
|
- "backing_file_depth": number of files in the backing file chain (json-int)
|
|
- "encrypted": true if encrypted, false otherwise (json-bool)
|
|
- "bps": limit total bytes per second (json-int)
|
|
- "bps_rd": limit read bytes per second (json-int)
|
|
- "bps_wr": limit write bytes per second (json-int)
|
|
- "iops": limit total I/O operations per second (json-int)
|
|
- "iops_rd": limit read operations per second (json-int)
|
|
- "iops_wr": limit write operations per second (json-int)
|
|
- "bps_max": total max in bytes (json-int)
|
|
- "bps_rd_max": read max in bytes (json-int)
|
|
- "bps_wr_max": write max in bytes (json-int)
|
|
- "iops_max": total I/O operations max (json-int)
|
|
- "iops_rd_max": read I/O operations max (json-int)
|
|
- "iops_wr_max": write I/O operations max (json-int)
|
|
- "iops_size": I/O size when limiting by iops (json-int)
|
|
- "detect_zeroes": detect and optimize zero writing (json-string)
|
|
- Possible values: "off", "on", "unmap"
|
|
- "write_threshold": write offset threshold in bytes, a event will be
|
|
emitted if crossed. Zero if disabled (json-int)
|
|
- "image": the detail of the image, it is a json-object containing
|
|
the following:
|
|
- "filename": image file name (json-string)
|
|
- "format": image format (json-string)
|
|
- "virtual-size": image capacity in bytes (json-int)
|
|
- "dirty-flag": true if image is not cleanly closed, not present
|
|
means clean (json-bool, optional)
|
|
- "actual-size": actual size on disk in bytes of the image, not
|
|
present when image does not support thin
|
|
provision (json-int, optional)
|
|
- "cluster-size": size of a cluster in bytes, not present if image
|
|
format does not support it (json-int, optional)
|
|
- "encrypted": true if the image is encrypted, not present means
|
|
false or the image format does not support
|
|
encryption (json-bool, optional)
|
|
- "backing_file": backing file name, not present means no backing
|
|
file is used or the image format does not
|
|
support backing file chain
|
|
(json-string, optional)
|
|
- "full-backing-filename": full path of the backing file, not
|
|
present if it equals backing_file or no
|
|
backing file is used
|
|
(json-string, optional)
|
|
- "backing-filename-format": the format of the backing file, not
|
|
present means unknown or no backing
|
|
file (json-string, optional)
|
|
- "snapshots": the internal snapshot info, it is an optional list
|
|
of json-object containing the following:
|
|
- "id": unique snapshot id (json-string)
|
|
- "name": snapshot name (json-string)
|
|
- "vm-state-size": size of the VM state in bytes (json-int)
|
|
- "date-sec": UTC date of the snapshot in seconds (json-int)
|
|
- "date-nsec": fractional part in nanoseconds to be used with
|
|
date-sec (json-int)
|
|
- "vm-clock-sec": VM clock relative to boot in seconds
|
|
(json-int)
|
|
- "vm-clock-nsec": fractional part in nanoseconds to be used
|
|
with vm-clock-sec (json-int)
|
|
- "backing-image": the detail of the backing image, it is an
|
|
optional json-object only present when a
|
|
backing image present for this image
|
|
|
|
- "io-status": I/O operation status, only present if the device supports it
|
|
and the VM is configured to stop on errors. It's always reset
|
|
to "ok" when the "cont" command is issued (json_string, optional)
|
|
- Possible values: "ok", "failed", "nospace"
|
|
|
|
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
|
|
}
|
|
}
|
|
},
|
|
"type":"unknown"
|
|
},
|
|
{
|
|
"io-status": "ok",
|
|
"device":"ide1-cd0",
|
|
"locked":false,
|
|
"removable":true,
|
|
"type":"unknown"
|
|
},
|
|
{
|
|
"device":"floppy0",
|
|
"locked":false,
|
|
"removable":true,
|
|
"type":"unknown"
|
|
},
|
|
{
|
|
"device":"sd0",
|
|
"locked":false,
|
|
"removable":true,
|
|
"type":"unknown"
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-block",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_block,
|
|
},
|
|
|
|
SQMP
|
|
query-blockstats
|
|
----------------
|
|
|
|
Show block device statistics.
|
|
|
|
Each device statistic information is stored in a json-object and the returned
|
|
value is a json-array of all devices.
|
|
|
|
Each json-object contain the following:
|
|
|
|
- "device": device name (json-string)
|
|
- "stats": A json-object with the statistics information, it contains:
|
|
- "rd_bytes": bytes read (json-int)
|
|
- "wr_bytes": bytes written (json-int)
|
|
- "rd_operations": read operations (json-int)
|
|
- "wr_operations": write operations (json-int)
|
|
- "flush_operations": cache flush operations (json-int)
|
|
- "wr_total_time_ns": total time spend on writes in nano-seconds (json-int)
|
|
- "rd_total_time_ns": total time spend on reads in nano-seconds (json-int)
|
|
- "flush_total_time_ns": total time spend on cache flushes in nano-seconds (json-int)
|
|
- "wr_highest_offset": Highest offset of a sector written since the
|
|
BlockDriverState has been opened (json-int)
|
|
- "rd_merged": number of read requests that have been merged into
|
|
another request (json-int)
|
|
- "wr_merged": number of write requests that have been merged into
|
|
another request (json-int)
|
|
- "parent": 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
|
|
(json-object, optional)
|
|
|
|
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
|
|
}
|
|
},
|
|
"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
|
|
}
|
|
},
|
|
{
|
|
"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
|
|
}
|
|
},
|
|
{
|
|
"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
|
|
}
|
|
},
|
|
{
|
|
"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
|
|
}
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-blockstats",
|
|
.args_type = "query-nodes:b?",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_blockstats,
|
|
},
|
|
|
|
SQMP
|
|
query-cpus
|
|
----------
|
|
|
|
Show CPU information.
|
|
|
|
Return a json-array. Each CPU is represented by a json-object, which contains:
|
|
|
|
- "CPU": CPU index (json-int)
|
|
- "current": true if this is the current CPU, false otherwise (json-bool)
|
|
- "halted": true if the cpu is halted, false otherwise (json-bool)
|
|
- Current program counter. The key's name depends on the architecture:
|
|
"pc": i386/x86_64 (json-int)
|
|
"nip": PPC (json-int)
|
|
"pc" and "npc": sparc (json-int)
|
|
"PC": mips (json-int)
|
|
- "thread_id": ID of the underlying host thread (json-int)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-cpus" }
|
|
<- {
|
|
"return":[
|
|
{
|
|
"CPU":0,
|
|
"current":true,
|
|
"halted":false,
|
|
"pc":3227107138
|
|
"thread_id":3134
|
|
},
|
|
{
|
|
"CPU":1,
|
|
"current":false,
|
|
"halted":true,
|
|
"pc":7108165
|
|
"thread_id":3135
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-cpus",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_cpus,
|
|
},
|
|
|
|
SQMP
|
|
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.
|
|
|
|
Return a json-array. Each iothread is represented by a json-object, which contains:
|
|
|
|
- "id": name of iothread (json-str)
|
|
- "thread-id": ID of the underlying host thread (json-int)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-iothreads" }
|
|
<- {
|
|
"return":[
|
|
{
|
|
"id":"iothread0",
|
|
"thread-id":3134
|
|
},
|
|
{
|
|
"id":"iothread1",
|
|
"thread-id":3135
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-iothreads",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_iothreads,
|
|
},
|
|
|
|
SQMP
|
|
query-pci
|
|
---------
|
|
|
|
PCI buses and devices information.
|
|
|
|
The returned value is a json-array of all buses. 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.
|
|
|
|
The bus json-object contains the following:
|
|
|
|
- "bus": bus number (json-int)
|
|
- "devices": a json-array of json-objects, each json-object represents a
|
|
PCI device
|
|
|
|
The PCI device json-object contains the following:
|
|
|
|
- "bus": identical to the parent's bus number (json-int)
|
|
- "slot": slot number (json-int)
|
|
- "function": function number (json-int)
|
|
- "class_info": a json-object containing:
|
|
- "desc": device class description (json-string, optional)
|
|
- "class": device class number (json-int)
|
|
- "id": a json-object containing:
|
|
- "device": device ID (json-int)
|
|
- "vendor": vendor ID (json-int)
|
|
- "irq": device's IRQ if assigned (json-int, optional)
|
|
- "qdev_id": qdev id string (json-string)
|
|
- "pci_bridge": It's a json-object, only present if this device is a
|
|
PCI bridge, contains:
|
|
- "bus": bus number (json-int)
|
|
- "secondary": secondary bus number (json-int)
|
|
- "subordinate": subordinate bus number (json-int)
|
|
- "io_range": I/O memory range information, a json-object with the
|
|
following members:
|
|
- "base": base address, in bytes (json-int)
|
|
- "limit": limit address, in bytes (json-int)
|
|
- "memory_range": memory range information, a json-object with the
|
|
following members:
|
|
- "base": base address, in bytes (json-int)
|
|
- "limit": limit address, in bytes (json-int)
|
|
- "prefetchable_range": Prefetchable memory range information, a
|
|
json-object with the following members:
|
|
- "base": base address, in bytes (json-int)
|
|
- "limit": limit address, in bytes (json-int)
|
|
- "devices": a json-array of PCI devices if there's any attached, each
|
|
each element is represented by a json-object, which contains
|
|
the same members of the 'PCI device json-object' described
|
|
above (optional)
|
|
- "regions": a json-array of json-objects, each json-object represents a
|
|
memory region of this device
|
|
|
|
The memory range json-object contains the following:
|
|
|
|
- "base": base memory address (json-int)
|
|
- "limit": limit value (json-int)
|
|
|
|
The region json-object can be an I/O region or a memory region, an I/O region
|
|
json-object contains the following:
|
|
|
|
- "type": "io" (json-string, fixed)
|
|
- "bar": BAR number (json-int)
|
|
- "address": memory address (json-int)
|
|
- "size": memory size (json-int)
|
|
|
|
A memory region json-object contains the following:
|
|
|
|
- "type": "memory" (json-string, fixed)
|
|
- "bar": BAR number (json-int)
|
|
- "address": memory address (json-int)
|
|
- "size": memory size (json-int)
|
|
- "mem_type_64": true or false (json-bool)
|
|
- "prefetch": true or false (json-bool)
|
|
|
|
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.
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-pci",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_pci,
|
|
},
|
|
|
|
SQMP
|
|
query-kvm
|
|
---------
|
|
|
|
Show KVM information.
|
|
|
|
Return a json-object with the following information:
|
|
|
|
- "enabled": true if KVM support is enabled, false otherwise (json-bool)
|
|
- "present": true if QEMU has KVM support, false otherwise (json-bool)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-kvm" }
|
|
<- { "return": { "enabled": true, "present": true } }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-kvm",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_kvm,
|
|
},
|
|
|
|
SQMP
|
|
query-status
|
|
------------
|
|
|
|
Return a json-object with the following information:
|
|
|
|
- "running": true if the VM is running, or false if it is paused (json-bool)
|
|
- "singlestep": true if the VM is in single step mode,
|
|
false otherwise (json-bool)
|
|
- "status": one of the following values (json-string)
|
|
"debug" - QEMU is running on a debugger
|
|
"inmigrate" - guest is paused waiting for an incoming migration
|
|
"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
|
|
"finish-migrate" - guest is paused to finish the migration process
|
|
"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)
|
|
"watchdog" - the watchdog action is configured to pause and
|
|
has been triggered
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-status" }
|
|
<- { "return": { "running": true, "singlestep": false, "status": "running" } }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-status",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_status,
|
|
},
|
|
|
|
SQMP
|
|
query-mice
|
|
----------
|
|
|
|
Show VM mice information.
|
|
|
|
Each mouse is represented by a json-object, the returned value is a json-array
|
|
of all mice.
|
|
|
|
The mouse json-object contains the following:
|
|
|
|
- "name": mouse's name (json-string)
|
|
- "index": mouse's index (json-int)
|
|
- "current": true if this mouse is receiving events, false otherwise (json-bool)
|
|
- "absolute": true if the mouse generates absolute input events (json-bool)
|
|
|
|
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
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-mice",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_mice,
|
|
},
|
|
|
|
SQMP
|
|
query-vnc
|
|
---------
|
|
|
|
Show VNC server information.
|
|
|
|
Return a json-object with server information. Connected clients are returned
|
|
as a json-array of json-objects.
|
|
|
|
The main json-object contains the following:
|
|
|
|
- "enabled": true or false (json-bool)
|
|
- "host": server's IP address (json-string)
|
|
- "family": address family (json-string)
|
|
- Possible values: "ipv4", "ipv6", "unix", "unknown"
|
|
- "service": server's port number (json-string)
|
|
- "auth": authentication method (json-string)
|
|
- Possible values: "invalid", "none", "ra2", "ra2ne", "sasl", "tight",
|
|
"tls", "ultra", "unknown", "vencrypt", "vencrypt",
|
|
"vencrypt+plain", "vencrypt+tls+none",
|
|
"vencrypt+tls+plain", "vencrypt+tls+sasl",
|
|
"vencrypt+tls+vnc", "vencrypt+x509+none",
|
|
"vencrypt+x509+plain", "vencrypt+x509+sasl",
|
|
"vencrypt+x509+vnc", "vnc"
|
|
- "clients": a json-array of all connected clients
|
|
|
|
Clients are described by a json-object, each one contain the following:
|
|
|
|
- "host": client's IP address (json-string)
|
|
- "family": address family (json-string)
|
|
- Possible values: "ipv4", "ipv6", "unix", "unknown"
|
|
- "service": client's port number (json-string)
|
|
- "x509_dname": TLS dname (json-string, optional)
|
|
- "sasl_username": SASL username (json-string, optional)
|
|
|
|
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"
|
|
}
|
|
]
|
|
}
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-vnc",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_vnc,
|
|
},
|
|
{
|
|
.name = "query-vnc-servers",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_vnc_servers,
|
|
},
|
|
|
|
SQMP
|
|
query-spice
|
|
-----------
|
|
|
|
Show SPICE server information.
|
|
|
|
Return a json-object with server information. Connected clients are returned
|
|
as a json-array of json-objects.
|
|
|
|
The main json-object contains the following:
|
|
|
|
- "enabled": true or false (json-bool)
|
|
- "host": server's IP address (json-string)
|
|
- "port": server's port number (json-int, optional)
|
|
- "tls-port": server's port number (json-int, optional)
|
|
- "auth": authentication method (json-string)
|
|
- Possible values: "none", "spice"
|
|
- "channels": a json-array of all active channels clients
|
|
|
|
Channels are described by a json-object, each one contain the following:
|
|
|
|
- "host": client's IP address (json-string)
|
|
- "family": address family (json-string)
|
|
- Possible values: "ipv4", "ipv6", "unix", "unknown"
|
|
- "port": client's port number (json-string)
|
|
- "connection-id": spice connection id. All channels with the same id
|
|
belong to the same spice session (json-int)
|
|
- "channel-type": channel type. "1" is the main control channel, filter for
|
|
this one if you want track spice sessions only (json-int)
|
|
- "channel-id": channel id. Usually "0", might be different needed when
|
|
multiple channels of the same type exist, such as multiple
|
|
display channels in a multihead setup (json-int)
|
|
- "tls": whether the channel is encrypted (json-bool)
|
|
|
|
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 ... ]
|
|
]
|
|
}
|
|
}
|
|
|
|
EQMP
|
|
|
|
#if defined(CONFIG_SPICE)
|
|
{
|
|
.name = "query-spice",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_spice,
|
|
},
|
|
#endif
|
|
|
|
SQMP
|
|
query-name
|
|
----------
|
|
|
|
Show VM name.
|
|
|
|
Return a json-object with the following information:
|
|
|
|
- "name": VM's name (json-string, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-name" }
|
|
<- { "return": { "name": "qemu-name" } }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-name",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_name,
|
|
},
|
|
|
|
SQMP
|
|
query-uuid
|
|
----------
|
|
|
|
Show VM UUID.
|
|
|
|
Return a json-object with the following information:
|
|
|
|
- "UUID": Universally Unique Identifier (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-uuid" }
|
|
<- { "return": { "UUID": "550e8400-e29b-41d4-a716-446655440000" } }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-uuid",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_uuid,
|
|
},
|
|
|
|
SQMP
|
|
query-command-line-options
|
|
--------------------------
|
|
|
|
Show command line option schema.
|
|
|
|
Return a json-array of command line option schema for all options (or for
|
|
the given option), returning an error if the given option doesn't exist.
|
|
|
|
Each array entry contains the following:
|
|
|
|
- "option": option name (json-string)
|
|
- "parameters": a json-array describes all parameters of the option:
|
|
- "name": parameter name (json-string)
|
|
- "type": parameter type (one of 'string', 'boolean', 'number',
|
|
or 'size')
|
|
- "help": human readable description of the parameter
|
|
(json-string, optional)
|
|
- "default": default value string for the parameter
|
|
(json-string, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-command-line-options", "arguments": { "option": "option-rom" } }
|
|
<- { "return": [
|
|
{
|
|
"parameters": [
|
|
{
|
|
"name": "romfile",
|
|
"type": "string"
|
|
},
|
|
{
|
|
"name": "bootindex",
|
|
"type": "number"
|
|
}
|
|
],
|
|
"option": "option-rom"
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-command-line-options",
|
|
.args_type = "option:s?",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_command_line_options,
|
|
},
|
|
|
|
SQMP
|
|
query-migrate
|
|
-------------
|
|
|
|
Migration status.
|
|
|
|
Return a json-object. 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.
|
|
|
|
The main json-object contains the following:
|
|
|
|
- "status": migration status (json-string)
|
|
- Possible values: "setup", "active", "completed", "failed", "cancelled"
|
|
- "total-time": total amount of ms since migration started. If
|
|
migration has ended, it returns the total migration
|
|
time (json-int)
|
|
- "setup-time" 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. (json-int)
|
|
- "downtime": only present when migration has finished correctly
|
|
total amount in ms for downtime that happened (json-int)
|
|
- "expected-downtime": only present while migration is active
|
|
total amount in ms for downtime that was calculated on
|
|
the last bitmap round (json-int)
|
|
- "ram": only present if "status" is "active", it is a json-object with the
|
|
following RAM information:
|
|
- "transferred": amount transferred in bytes (json-int)
|
|
- "remaining": amount remaining to transfer in bytes (json-int)
|
|
- "total": total amount of memory in bytes (json-int)
|
|
- "duplicate": number of pages filled entirely with the same
|
|
byte (json-int)
|
|
These are sent over the wire much more efficiently.
|
|
- "skipped": number of skipped zero pages (json-int)
|
|
- "normal" : number of whole pages transferred. I.e. they
|
|
were not sent as duplicate or xbzrle pages (json-int)
|
|
- "normal-bytes" : number of bytes transferred in whole
|
|
pages. This is just normal pages times size of one page,
|
|
but this way upper levels don't need to care about page
|
|
size (json-int)
|
|
- "dirty-sync-count": times that dirty ram was synchronized (json-int)
|
|
- "disk": only present if "status" is "active" and it is a block migration,
|
|
it is a json-object with the following disk information:
|
|
- "transferred": amount transferred in bytes (json-int)
|
|
- "remaining": amount remaining to transfer in bytes json-int)
|
|
- "total": total disk size in bytes (json-int)
|
|
- "xbzrle-cache": only present if XBZRLE is active.
|
|
It is a json-object with the following XBZRLE information:
|
|
- "cache-size": XBZRLE cache size in bytes
|
|
- "bytes": number of bytes transferred for XBZRLE compressed pages
|
|
- "pages": number of XBZRLE compressed pages
|
|
- "cache-miss": number of XBRZRLE page cache misses
|
|
- "cache-miss-rate": rate of XBRZRLE page cache misses
|
|
- "overflow": number of times XBZRLE overflows. This means
|
|
that the XBZRLE encoding was bigger than just sent the
|
|
whole page, and then we sent the whole page instead (as as
|
|
normal page).
|
|
|
|
Examples:
|
|
|
|
1. Before the first migration
|
|
|
|
-> { "execute": "query-migrate" }
|
|
<- { "return": {} }
|
|
|
|
2. Migration is done and has succeeded
|
|
|
|
-> { "execute": "query-migrate" }
|
|
<- { "return": {
|
|
"status": "completed",
|
|
"ram":{
|
|
"transferred":123,
|
|
"remaining":123,
|
|
"total":246,
|
|
"total-time":12345,
|
|
"setup-time":12345,
|
|
"downtime":12345,
|
|
"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",
|
|
"ram":{
|
|
"transferred":123,
|
|
"remaining":123,
|
|
"total":246,
|
|
"total-time":12345,
|
|
"setup-time":12345,
|
|
"expected-downtime":12345,
|
|
"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",
|
|
"ram":{
|
|
"total":1057024,
|
|
"remaining":1053304,
|
|
"transferred":3720,
|
|
"total-time":12345,
|
|
"setup-time":12345,
|
|
"expected-downtime":12345,
|
|
"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",
|
|
"capabilities" : [ { "capability": "xbzrle", "state" : true } ],
|
|
"ram":{
|
|
"total":1057024,
|
|
"remaining":1053304,
|
|
"transferred":3720,
|
|
"total-time":12345,
|
|
"setup-time":12345,
|
|
"expected-downtime":12345,
|
|
"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
|
|
}
|
|
}
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-migrate",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_migrate,
|
|
},
|
|
|
|
SQMP
|
|
migrate-set-capabilities
|
|
------------------------
|
|
|
|
Enable/Disable migration capabilities
|
|
|
|
- "xbzrle": XBZRLE support
|
|
- "rdma-pin-all": pin all pages when using RDMA during migration
|
|
- "auto-converge": throttle down guest to help convergence of migration
|
|
- "zero-blocks": compress zero blocks during block migration
|
|
|
|
Arguments:
|
|
|
|
Example:
|
|
|
|
-> { "execute": "migrate-set-capabilities" , "arguments":
|
|
{ "capabilities": [ { "capability": "xbzrle", "state": true } ] } }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "migrate-set-capabilities",
|
|
.args_type = "capabilities:O",
|
|
.params = "capability:s,state:b",
|
|
.mhandler.cmd_new = qmp_marshal_input_migrate_set_capabilities,
|
|
},
|
|
SQMP
|
|
query-migrate-capabilities
|
|
--------------------------
|
|
|
|
Query current migration capabilities
|
|
|
|
- "capabilities": migration capabilities state
|
|
- "xbzrle" : XBZRLE state (json-bool)
|
|
- "rdma-pin-all" : RDMA Pin Page state (json-bool)
|
|
- "auto-converge" : Auto Converge state (json-bool)
|
|
- "zero-blocks" : Zero Blocks state (json-bool)
|
|
|
|
Arguments:
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-migrate-capabilities" }
|
|
<- { "return": [ { "state": false, "capability": "xbzrle" } ] }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-migrate-capabilities",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_migrate_capabilities,
|
|
},
|
|
|
|
SQMP
|
|
query-balloon
|
|
-------------
|
|
|
|
Show balloon information.
|
|
|
|
Make an asynchronous request for balloon info. When the request completes a
|
|
json-object will be returned containing the following data:
|
|
|
|
- "actual": current balloon value in bytes (json-int)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-balloon" }
|
|
<- {
|
|
"return":{
|
|
"actual":1073741824,
|
|
}
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-balloon",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_balloon,
|
|
},
|
|
|
|
{
|
|
.name = "query-block-jobs",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_block_jobs,
|
|
},
|
|
|
|
{
|
|
.name = "qom-list",
|
|
.args_type = "path:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_qom_list,
|
|
},
|
|
|
|
{
|
|
.name = "qom-set",
|
|
.args_type = "path:s,property:s,value:q",
|
|
.mhandler.cmd_new = qmp_qom_set,
|
|
},
|
|
|
|
{
|
|
.name = "qom-get",
|
|
.args_type = "path:s,property:s",
|
|
.mhandler.cmd_new = qmp_qom_get,
|
|
},
|
|
|
|
{
|
|
.name = "nbd-server-start",
|
|
.args_type = "addr:q",
|
|
.mhandler.cmd_new = qmp_marshal_input_nbd_server_start,
|
|
},
|
|
{
|
|
.name = "nbd-server-add",
|
|
.args_type = "device:B,writable:b?",
|
|
.mhandler.cmd_new = qmp_marshal_input_nbd_server_add,
|
|
},
|
|
{
|
|
.name = "nbd-server-stop",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_nbd_server_stop,
|
|
},
|
|
|
|
{
|
|
.name = "change-vnc-password",
|
|
.args_type = "password:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_change_vnc_password,
|
|
},
|
|
{
|
|
.name = "qom-list-types",
|
|
.args_type = "implements:s?,abstract:b?",
|
|
.mhandler.cmd_new = qmp_marshal_input_qom_list_types,
|
|
},
|
|
|
|
{
|
|
.name = "device-list-properties",
|
|
.args_type = "typename:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_device_list_properties,
|
|
},
|
|
|
|
{
|
|
.name = "query-machines",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_machines,
|
|
},
|
|
|
|
{
|
|
.name = "query-cpu-definitions",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_cpu_definitions,
|
|
},
|
|
|
|
{
|
|
.name = "query-target",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_target,
|
|
},
|
|
|
|
{
|
|
.name = "query-tpm",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_tpm,
|
|
},
|
|
|
|
SQMP
|
|
query-tpm
|
|
---------
|
|
|
|
Return information about the TPM device.
|
|
|
|
Arguments: None
|
|
|
|
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"
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-tpm-models",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_tpm_models,
|
|
},
|
|
|
|
SQMP
|
|
query-tpm-models
|
|
----------------
|
|
|
|
Return a list of supported TPM models.
|
|
|
|
Arguments: None
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-tpm-models" }
|
|
<- { "return": [ "tpm-tis" ] }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-tpm-types",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_tpm_types,
|
|
},
|
|
|
|
SQMP
|
|
query-tpm-types
|
|
---------------
|
|
|
|
Return a list of supported TPM types.
|
|
|
|
Arguments: None
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-tpm-types" }
|
|
<- { "return": [ "passthrough" ] }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "chardev-add",
|
|
.args_type = "id:s,backend:q",
|
|
.mhandler.cmd_new = qmp_marshal_input_chardev_add,
|
|
},
|
|
|
|
SQMP
|
|
chardev-add
|
|
----------------
|
|
|
|
Add a chardev.
|
|
|
|
Arguments:
|
|
|
|
- "id": the chardev's ID, must be unique (json-string)
|
|
- "backend": chardev backend type + parameters
|
|
|
|
Examples:
|
|
|
|
-> { "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" } }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "chardev-remove",
|
|
.args_type = "id:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_chardev_remove,
|
|
},
|
|
|
|
|
|
SQMP
|
|
chardev-remove
|
|
--------------
|
|
|
|
Remove a chardev.
|
|
|
|
Arguments:
|
|
|
|
- "id": the chardev's ID, must exist and not be in use (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "chardev-remove", "arguments": { "id" : "foo" } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
{
|
|
.name = "query-rx-filter",
|
|
.args_type = "name:s?",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_rx_filter,
|
|
},
|
|
|
|
SQMP
|
|
query-rx-filter
|
|
---------------
|
|
|
|
Show rx-filter information.
|
|
|
|
Returns a json-array of rx-filter information for all NICs (or for the
|
|
given NIC), returning an error if the given NIC doesn't exist, or
|
|
given NIC doesn't support rx-filter querying, or given net client
|
|
isn't a NIC.
|
|
|
|
The query will clear the event notification flag of each NIC, then qemu
|
|
will start to emit event to QMP monitor.
|
|
|
|
Each array entry contains the following:
|
|
|
|
- "name": net client name (json-string)
|
|
- "promiscuous": promiscuous mode is enabled (json-bool)
|
|
- "multicast": multicast receive state (one of 'normal', 'none', 'all')
|
|
- "unicast": unicast receive state (one of 'normal', 'none', 'all')
|
|
- "vlan": vlan receive state (one of 'normal', 'none', 'all') (Since 2.0)
|
|
- "broadcast-allowed": allow to receive broadcast (json-bool)
|
|
- "multicast-overflow": multicast table is overflowed (json-bool)
|
|
- "unicast-overflow": unicast table is overflowed (json-bool)
|
|
- "main-mac": main macaddr string (json-string)
|
|
- "vlan-table": a json-array of active vlan id
|
|
- "unicast-table": a json-array of unicast macaddr string
|
|
- "multicast-table": a json-array of multicast macaddr string
|
|
|
|
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
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "blockdev-add",
|
|
.args_type = "options:q",
|
|
.mhandler.cmd_new = qmp_marshal_input_blockdev_add,
|
|
},
|
|
|
|
SQMP
|
|
blockdev-add
|
|
------------
|
|
|
|
Add a block device.
|
|
|
|
Arguments:
|
|
|
|
- "options": block driver options
|
|
|
|
Example (1):
|
|
|
|
-> { "execute": "blockdev-add",
|
|
"arguments": { "options" : { "driver": "qcow2",
|
|
"file": { "driver": "file",
|
|
"filename": "test.qcow2" } } } }
|
|
<- { "return": {} }
|
|
|
|
Example (2):
|
|
|
|
-> { "execute": "blockdev-add",
|
|
"arguments": {
|
|
"options": {
|
|
"driver": "qcow2",
|
|
"id": "my_disk",
|
|
"discard": "unmap",
|
|
"cache": {
|
|
"direct": true,
|
|
"writeback": true
|
|
},
|
|
"file": {
|
|
"driver": "file",
|
|
"filename": "/tmp/test.qcow2"
|
|
},
|
|
"backing": {
|
|
"driver": "raw",
|
|
"file": {
|
|
"driver": "file",
|
|
"filename": "/dev/fdset/4"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-named-block-nodes",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_named_block_nodes,
|
|
},
|
|
|
|
SQMP
|
|
@query-named-block-nodes
|
|
------------------------
|
|
|
|
Return a list of BlockDeviceInfo for all the named block driver nodes
|
|
|
|
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
|
|
}
|
|
} } ] }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-memdev",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_memdev,
|
|
},
|
|
|
|
SQMP
|
|
query-memdev
|
|
------------
|
|
|
|
Show memory devices information.
|
|
|
|
|
|
Example (1):
|
|
|
|
-> { "execute": "query-memdev" }
|
|
<- { "return": [
|
|
{
|
|
"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"
|
|
}
|
|
]
|
|
}
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-memory-devices",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_memory_devices,
|
|
},
|
|
|
|
SQMP
|
|
@query-memory-devices
|
|
--------------------
|
|
|
|
Return a list of memory devices.
|
|
|
|
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"
|
|
} ] }
|
|
EQMP
|
|
|
|
{
|
|
.name = "query-acpi-ospm-status",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_query_acpi_ospm_status,
|
|
},
|
|
|
|
SQMP
|
|
@query-acpi-ospm-status
|
|
--------------------
|
|
|
|
Return list of ACPIOSTInfo for devices that support status reporting
|
|
via ACPI _OST method.
|
|
|
|
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}
|
|
]}
|
|
EQMP
|
|
|
|
#if defined TARGET_I386
|
|
{
|
|
.name = "rtc-reset-reinjection",
|
|
.args_type = "",
|
|
.mhandler.cmd_new = qmp_marshal_input_rtc_reset_reinjection,
|
|
},
|
|
#endif
|
|
|
|
SQMP
|
|
rtc-reset-reinjection
|
|
---------------------
|
|
|
|
Reset the RTC interrupt reinjection backlog.
|
|
|
|
Arguments: None.
|
|
|
|
Example:
|
|
|
|
-> { "execute": "rtc-reset-reinjection" }
|
|
<- { "return": {} }
|
|
EQMP
|
|
|
|
{
|
|
.name = "trace-event-get-state",
|
|
.args_type = "name:s",
|
|
.mhandler.cmd_new = qmp_marshal_input_trace_event_get_state,
|
|
},
|
|
|
|
SQMP
|
|
trace-event-get-state
|
|
---------------------
|
|
|
|
Query the state of events.
|
|
|
|
Example:
|
|
|
|
-> { "execute": "trace-event-get-state", "arguments": { "name": "qemu_memalign" } }
|
|
<- { "return": [ { "name": "qemu_memalign", "state": "disabled" } ] }
|
|
EQMP
|
|
|
|
{
|
|
.name = "trace-event-set-state",
|
|
.args_type = "name:s,enable:b,ignore-unavailable:b?",
|
|
.mhandler.cmd_new = qmp_marshal_input_trace_event_set_state,
|
|
},
|
|
|
|
SQMP
|
|
trace-event-set-state
|
|
---------------------
|
|
|
|
Set the state of events.
|
|
|
|
Example:
|
|
|
|
-> { "execute": "trace-event-set-state", "arguments": { "name": "qemu_memalign", "enable": "true" } }
|
|
<- { "return": {} }
|
|
EQMP
|
|
|
|
{
|
|
.name = "x-input-send-event",
|
|
.args_type = "console:i?,events:q",
|
|
.mhandler.cmd_new = qmp_marshal_input_x_input_send_event,
|
|
},
|
|
|
|
SQMP
|
|
@x-input-send-event
|
|
-----------------
|
|
|
|
Send input event to guest.
|
|
|
|
Arguments:
|
|
|
|
- "console": console index. (json-int, optional)
|
|
- "events": list of input events.
|
|
|
|
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.
|
|
|
|
Note: this command is experimental, and not a stable API.
|
|
|
|
Example (1):
|
|
|
|
Press left mouse button.
|
|
|
|
-> { "execute": "x-input-send-event",
|
|
"arguments": { "console": 0,
|
|
"events": [ { "type": "btn",
|
|
"data" : { "down": true, "button": "Left" } } ] } }
|
|
<- { "return": {} }
|
|
|
|
-> { "execute": "x-input-send-event",
|
|
"arguments": { "console": 0,
|
|
"events": [ { "type": "btn",
|
|
"data" : { "down": false, "button": "Left" } } ] } }
|
|
<- { "return": {} }
|
|
|
|
Example (2):
|
|
|
|
Press ctrl-alt-del.
|
|
|
|
-> { "execute": "x-input-send-event",
|
|
"arguments": { "console": 0, "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": {} }
|
|
|
|
Example (3):
|
|
|
|
Move mouse pointer to absolute coordinates (20000, 400).
|
|
|
|
-> { "execute": "x-input-send-event" ,
|
|
"arguments": { "console": 0, "events": [
|
|
{ "type": "abs", "data" : { "axis": "X", "value" : 20000 } },
|
|
{ "type": "abs", "data" : { "axis": "Y", "value" : 400 } } ] } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|
|
|
|
{
|
|
.name = "block-set-write-threshold",
|
|
.args_type = "node-name:s,write-threshold:l",
|
|
.mhandler.cmd_new = qmp_marshal_input_block_set_write_threshold,
|
|
},
|
|
|
|
SQMP
|
|
block-set-write-threshold
|
|
------------
|
|
|
|
Change the write threshold for a block drive. The threshold is an offset,
|
|
thus must be non-negative. Default is no write threshold.
|
|
Setting the threshold to zero disables it.
|
|
|
|
Arguments:
|
|
|
|
- "node-name": the node name in the block driver state graph (json-string)
|
|
- "write-threshold": the write threshold in bytes (json-int)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "block-set-write-threshold",
|
|
"arguments": { "node-name": "mydev",
|
|
"write-threshold": 17179869184 } }
|
|
<- { "return": {} }
|
|
|
|
EQMP
|