e9ac76acd7
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2533 lines
79 KiB
Plaintext
2533 lines
79 KiB
Plaintext
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 (docs/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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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": block device name (deprecated, use @id instead)
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(json-string, optional)
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- "id": the name or QOM path of the guest device (json-string, optional)
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Example:
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-> { "execute": "eject", "arguments": { "id": "ide0-1-0" } }
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<- { "return": {} }
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Note: The "force" argument defaults to false.
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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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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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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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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 or QOM path (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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Example:
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-> { "execute": "device_del", "arguments": { "id": "/machine/peripheral-anon/device[0]" } }
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<- { "return": {} }
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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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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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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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xen-load-devices-state
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----------------------
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Load the state of all devices from file. The RAM and the block devices
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of the VM are not loaded by this command.
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Arguments:
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- "filename": the file to load the state of the devices from 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-load-devices-state",
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"arguments": { "filename": "/tmp/resume" } }
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<- { "return": {} }
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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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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)
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(2) All boolean arguments default to false
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(3) The user Monitor's "detach" argument is invalid in QMP and should not
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be used
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migrate_cancel
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--------------
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Cancel the current migration.
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Arguments: None.
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Example:
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-> { "execute": "migrate_cancel" }
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<- { "return": {} }
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migrate-incoming
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----------------
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Continue an incoming migration
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Arguments:
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- "uri": Source/listening URI (json-string)
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Example:
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-> { "execute": "migrate-incoming", "arguments": { "uri": "tcp::4446" } }
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<- { "return": {} }
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Notes:
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(1) QEMU must be started with -incoming defer to allow migrate-incoming to
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be used
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(2) The uri format is the same as for -incoming
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migrate-set-cache-size
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----------------------
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Set cache size to be used by XBZRLE migration, the cache size will be rounded
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down to the nearest power of 2
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Arguments:
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- "value": cache size in bytes (json-int)
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Example:
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-> { "execute": "migrate-set-cache-size", "arguments": { "value": 536870912 } }
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<- { "return": {} }
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query-migrate-cache-size
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------------------------
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Show cache size to be used by XBZRLE migration
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returns a json-object with the following information:
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- "size" : json-int
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Example:
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-> { "execute": "query-migrate-cache-size" }
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<- { "return": 67108864 }
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migrate_set_speed
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-----------------
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Set maximum speed for migrations.
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Arguments:
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- "value": maximum speed, in bytes per second (json-int)
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Example:
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-> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } }
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<- { "return": {} }
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migrate_set_downtime
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--------------------
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Set maximum tolerated downtime (in seconds) for migrations.
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Arguments:
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- "value": maximum downtime (json-number)
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Example:
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-> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } }
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<- { "return": {} }
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x-colo-lost-heartbeat
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--------------------
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Tell COLO that heartbeat is lost, a failover or takeover is needed.
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Example:
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-> { "execute": "x-colo-lost-heartbeat" }
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<- { "return": {} }
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dump
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Dump guest memory to file. The file can be processed with crash or gdb.
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Arguments:
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- "paging": do paging to get guest's memory mapping (json-bool)
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- "protocol": destination file(started with "file:") or destination file
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descriptor (started with "fd:") (json-string)
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- "detach": if specified, command will return immediately, without waiting
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for the dump to finish. The user can track progress using
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"query-dump". (json-bool)
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- "begin": the starting physical address. It's optional, and should be specified
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with length together (json-int)
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- "length": the memory size, in bytes. It's optional, and should be specified
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with begin together (json-int)
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- "format": the format of guest memory dump. It's optional, and can be
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elf|kdump-zlib|kdump-lzo|kdump-snappy, but non-elf formats will
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conflict with paging and filter, ie. begin and length (json-string)
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Example:
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-> { "execute": "dump-guest-memory", "arguments": { "protocol": "fd:dump" } }
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<- { "return": {} }
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Notes:
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(1) All boolean arguments default to false
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query-dump-guest-memory-capability
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----------
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Show available formats for 'dump-guest-memory'
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Example:
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-> { "execute": "query-dump-guest-memory-capability" }
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<- { "return": { "formats":
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["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
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query-dump
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----------
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Query background dump status.
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Arguments: None.
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Example:
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-> { "execute": "query-dump" }
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<- { "return": { "status": "active", "completed": 1024000,
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"total": 2048000 } }
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dump-skeys
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----------
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Save guest storage keys to file.
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Arguments:
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- "filename": file path (json-string)
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Example:
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-> { "execute": "dump-skeys", "arguments": { "filename": "/tmp/skeys" } }
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<- { "return": {} }
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netdev_add
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----------
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Add host network device.
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Arguments:
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- "type": the device type, "tap", "user", ... (json-string)
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- "id": the device's ID, must be unique (json-string)
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- device options
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Example:
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-> { "execute": "netdev_add",
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"arguments": { "type": "user", "id": "netdev1",
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"dnssearch": "example.org" } }
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<- { "return": {} }
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Note: The supported device options are the same ones supported by the '-netdev'
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command-line argument, which are listed in the '-help' output or QEMU's
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manual
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netdev_del
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----------
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Remove host network device.
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Arguments:
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- "id": the device's ID, must be unique (json-string)
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Example:
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-> { "execute": "netdev_del", "arguments": { "id": "netdev1" } }
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<- { "return": {} }
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object-add
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----------
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Create QOM object.
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Arguments:
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- "qom-type": the object's QOM type, i.e. the class name (json-string)
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- "id": the object's ID, must be unique (json-string)
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- "props": a dictionary of object property values (optional, json-dict)
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Example:
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-> { "execute": "object-add", "arguments": { "qom-type": "rng-random", "id": "rng1",
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"props": { "filename": "/dev/hwrng" } } }
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<- { "return": {} }
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object-del
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----------
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Remove QOM object.
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Arguments:
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- "id": the object's ID (json-string)
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Example:
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-> { "execute": "object-del", "arguments": { "id": "rng1" } }
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<- { "return": {} }
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block_resize
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------------
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Resize a block image while a guest is running.
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Arguments:
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- "device": the device's ID, must be unique (json-string)
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- "node-name": the node name in the block driver state graph (json-string)
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- "size": new size
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Example:
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-> { "execute": "block_resize", "arguments": { "device": "scratch", "size": 1073741824 } }
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<- { "return": {} }
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block-stream
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------------
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Copy data from a backing file into a block device.
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Arguments:
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- "job-id": Identifier for the newly-created block job. If omitted,
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the device name will be used. (json-string, optional)
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- "device": The device name or node-name of a root node (json-string)
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- "base": The file name of the backing image above which copying starts.
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It cannot be set if 'base-node' is also set (json-string, optional)
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- "base-node": the node name of the backing image above which copying starts.
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It cannot be set if 'base' is also set.
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(json-string, optional) (Since 2.8)
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- "backing-file": The backing file string to write into the active layer. This
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filename is not validated.
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If a pathname string is such that it cannot be resolved by
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QEMU, that means that subsequent QMP or HMP commands must use
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node-names for the image in question, as filename lookup
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methods will fail.
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If not specified, QEMU will automatically determine the
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backing file string to use, or error out if there is no
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obvious choice. Care should be taken when specifying the
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string, to specify a valid filename or protocol.
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(json-string, optional) (Since 2.1)
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- "speed": the maximum speed, in bytes per second (json-int, optional)
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- "on-error": the action to take on an error (default 'report'). 'stop' and
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'enospc' can only be used if the block device supports io-status.
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(json-string, optional) (Since 2.1)
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Example:
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-> { "execute": "block-stream", "arguments": { "device": "virtio0",
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"base": "/tmp/master.qcow2" } }
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<- { "return": {} }
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block-commit
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------------
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Live commit of data from overlay image nodes into backing nodes - i.e., writes
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data between 'top' and 'base' into 'base'.
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Arguments:
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- "job-id": Identifier for the newly-created block job. If omitted,
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the device name will be used. (json-string, optional)
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- "device": The device name or node-name of a root node (json-string)
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- "base": The file name of the backing image to write data into.
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If not specified, this is the deepest backing image
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(json-string, optional)
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- "top": The file name of the backing image within the image chain,
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which contains the topmost data to be committed down. If
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not specified, this is the active layer. (json-string, optional)
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- backing-file: The backing file string to write into the overlay
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image of 'top'. If 'top' is the active layer,
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specifying a backing file string is an error. This
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filename is not validated.
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If a pathname string is such that it cannot be
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resolved by QEMU, that means that subsequent QMP or
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HMP commands must use node-names for the image in
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question, as filename lookup methods will fail.
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If not specified, QEMU will automatically determine
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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": {} }
|
|
|
|
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:
|
|
|
|
- "job-id": Identifier for the newly-created block job. If omitted,
|
|
the device name will be used. (json-string, optional)
|
|
- "device": the device name or node-name of a root node 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, "incremental" for only the dirty sectors in
|
|
the bitmap, or "none" to only replicate new I/O (MirrorSyncMode).
|
|
- "bitmap": dirty bitmap name for sync==incremental. Must be present if sync
|
|
is "incremental", must NOT be present otherwise.
|
|
- "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)
|
|
- "compress": true to compress data, if the target format supports it.
|
|
(json-bool, optional, default false)
|
|
- "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": {} }
|
|
|
|
blockdev-backup
|
|
---------------
|
|
|
|
The device version of drive-backup: this command takes an existing named device
|
|
as backup target.
|
|
|
|
Arguments:
|
|
|
|
- "job-id": Identifier for the newly-created block job. If omitted,
|
|
the device name will be used. (json-string, optional)
|
|
- "device": the device name or node-name of a root node 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)
|
|
- "compress": true to compress data, if the target format supports it.
|
|
(json-bool, optional, default false)
|
|
- "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": {} }
|
|
|
|
block-dirty-bitmap-add
|
|
----------------------
|
|
Since 2.4
|
|
|
|
Create a dirty bitmap with a name on the device, and start tracking the writes.
|
|
|
|
Arguments:
|
|
|
|
- "node": device/node on which to create dirty bitmap (json-string)
|
|
- "name": name of the new dirty bitmap (json-string)
|
|
- "granularity": granularity to track writes with (int, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "block-dirty-bitmap-add", "arguments": { "node": "drive0",
|
|
"name": "bitmap0" } }
|
|
<- { "return": {} }
|
|
|
|
block-dirty-bitmap-remove
|
|
-------------------------
|
|
Since 2.4
|
|
|
|
Stop write tracking and remove the dirty bitmap that was created with
|
|
block-dirty-bitmap-add.
|
|
|
|
Arguments:
|
|
|
|
- "node": device/node on which to remove dirty bitmap (json-string)
|
|
- "name": name of the dirty bitmap to remove (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "block-dirty-bitmap-remove", "arguments": { "node": "drive0",
|
|
"name": "bitmap0" } }
|
|
<- { "return": {} }
|
|
|
|
block-dirty-bitmap-clear
|
|
------------------------
|
|
Since 2.4
|
|
|
|
Reset the dirty bitmap associated with a node so that an incremental backup
|
|
from this point in time forward will only backup clusters modified after this
|
|
clear operation.
|
|
|
|
Arguments:
|
|
|
|
- "node": device/node on which to remove dirty bitmap (json-string)
|
|
- "name": name of the dirty bitmap to remove (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "block-dirty-bitmap-clear", "arguments": { "node": "drive0",
|
|
"name": "bitmap0" } }
|
|
<- { "return": {} }
|
|
|
|
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": {} }
|
|
|
|
blockdev-snapshot
|
|
-----------------
|
|
Since 2.5
|
|
|
|
Create a snapshot, by installing 'node' as the backing image of
|
|
'overlay'. Additionally, if 'node' is associated with a block
|
|
device, the block device changes to using 'overlay' as its new active
|
|
image.
|
|
|
|
Arguments:
|
|
|
|
- "node": device that will have a snapshot created (json-string)
|
|
- "overlay": device that will have 'node' as its backing image (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "blockdev-add",
|
|
"arguments": { "driver": "qcow2",
|
|
"node-name": "node1534",
|
|
"file": { "driver": "file",
|
|
"filename": "hd1.qcow2" },
|
|
"backing": "" } }
|
|
|
|
<- { "return": {} }
|
|
|
|
-> { "execute": "blockdev-snapshot", "arguments": { "node": "ide-hd0",
|
|
"overlay": "node1534" } }
|
|
<- { "return": {} }
|
|
|
|
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": the device name or node-name of a root node 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": {} }
|
|
|
|
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": the device name or node-name of a root node (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
|
|
}
|
|
}
|
|
|
|
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:
|
|
|
|
- "job-id": Identifier for the newly-created block job. If omitted,
|
|
the device name will be used. (json-string, optional)
|
|
- "device": the device name or node-name of a root node whose writes should be
|
|
mirrored. (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')
|
|
- "unmap": whether the target sectors should be discarded where source has only
|
|
zeroes. (json-bool, optional, default true)
|
|
|
|
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": {} }
|
|
|
|
blockdev-mirror
|
|
------------
|
|
|
|
Start mirroring a block device's writes to another block device. target
|
|
specifies the target of mirror operation.
|
|
|
|
Arguments:
|
|
|
|
- "job-id": Identifier for the newly-created block job. If omitted,
|
|
the device name will be used. (json-string, optional)
|
|
- "device": The device name or node-name of a root node whose writes should be
|
|
mirrored (json-string)
|
|
- "target": device name to mirror to (json-string)
|
|
- "replaces": the block driver node name to replace when finished
|
|
(json-string, optional)
|
|
- "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": "blockdev-mirror", "arguments": { "device": "ide-hd0",
|
|
"target": "target0",
|
|
"sync": "full" } }
|
|
<- { "return": {} }
|
|
|
|
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 device name or node-name of the root node that owns
|
|
image-node-name.
|
|
(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
|
|
|
|
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.
|
|
|
|
closefd
|
|
-------
|
|
|
|
Close a file descriptor previously passed via SCM rights.
|
|
|
|
Arguments:
|
|
|
|
- "fdname": file descriptor name (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "closefd", "arguments": { "fdname": "fd1" } }
|
|
<- { "return": {} }
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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": {} }
|
|
|
|
block_set_io_throttle
|
|
------------
|
|
|
|
Change I/O throttle limits for a block drive.
|
|
|
|
Arguments:
|
|
|
|
- "device": block device name (deprecated, use @id instead)
|
|
(json-string, optional)
|
|
- "id": the name or QOM path of the guest device (json-string, optional)
|
|
- "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 throughput limit during bursts, in bytes (json-int, optional)
|
|
- "bps_rd_max": read throughput limit during bursts, in bytes (json-int, optional)
|
|
- "bps_wr_max": write throughput limit during bursts, in bytes (json-int, optional)
|
|
- "iops_max": total I/O operations per second during bursts (json-int, optional)
|
|
- "iops_rd_max": read I/O operations per second during bursts (json-int, optional)
|
|
- "iops_wr_max": write I/O operations per second during bursts (json-int, optional)
|
|
- "bps_max_length": maximum length of the @bps_max burst period, in seconds (json-int, optional)
|
|
- "bps_rd_max_length": maximum length of the @bps_rd_max burst period, in seconds (json-int, optional)
|
|
- "bps_wr_max_length": maximum length of the @bps_wr_max burst period, in seconds (json-int, optional)
|
|
- "iops_max_length": maximum length of the @iops_max burst period, in seconds (json-int, optional)
|
|
- "iops_rd_max_length": maximum length of the @iops_rd_max burst period, in seconds (json-int, optional)
|
|
- "iops_wr_max_length": maximum length of the @iops_wr_max burst period, in seconds (json-int, optional)
|
|
- "iops_size": I/O size in bytes when limiting (json-int, optional)
|
|
- "group": throttle group name (json-string, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "block_set_io_throttle", "arguments": { "id": "ide0-1-0",
|
|
"bps": 1000000,
|
|
"bps_rd": 0,
|
|
"bps_wr": 0,
|
|
"iops": 0,
|
|
"iops_rd": 0,
|
|
"iops_wr": 0,
|
|
"bps_max": 8000000,
|
|
"bps_rd_max": 0,
|
|
"bps_wr_max": 0,
|
|
"iops_max": 0,
|
|
"iops_rd_max": 0,
|
|
"iops_wr_max": 0,
|
|
"bps_max_length": 60,
|
|
"iops_size": 0 } }
|
|
<- { "return": {} }
|
|
|
|
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": {} }
|
|
|
|
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": {} }
|
|
|
|
qmp_capabilities
|
|
----------------
|
|
|
|
Enable QMP capabilities.
|
|
|
|
Arguments: None.
|
|
|
|
Example:
|
|
|
|
-> { "execute": "qmp_capabilities" }
|
|
<- { "return": {} }
|
|
|
|
Note: This command must be issued before issuing any other command.
|
|
|
|
3. Query Commands
|
|
=================
|
|
|
|
|
|
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":""
|
|
}
|
|
}
|
|
|
|
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.
|
|
|
|
query-qmp-schema
|
|
----------------
|
|
|
|
Return the QMP wire schema. The returned value is a json-array of
|
|
named schema entities. Entities are commands, events and various
|
|
types. See docs/qapi-code-gen.txt for information on their structure
|
|
and intended use.
|
|
|
|
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", "http", "https",
|
|
"nbd", "parallels", "qcow", "qcow2", "raw",
|
|
"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"
|
|
}
|
|
]
|
|
}
|
|
|
|
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": The offset after the greatest byte written to the
|
|
BlockDriverState since it 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)
|
|
- "idle_time_ns": time since the last I/O operation, in
|
|
nanoseconds. If the field is absent it means
|
|
that there haven't been any operations yet
|
|
(json-int, optional)
|
|
- "failed_rd_operations": number of failed read operations
|
|
(json-int)
|
|
- "failed_wr_operations": number of failed write operations
|
|
(json-int)
|
|
- "failed_flush_operations": number of failed flush operations
|
|
(json-int)
|
|
- "invalid_rd_operations": number of invalid read operations
|
|
(json-int)
|
|
- "invalid_wr_operations": number of invalid write operations
|
|
(json-int)
|
|
- "invalid_flush_operations": number of invalid flush operations
|
|
(json-int)
|
|
- "account_invalid": whether invalid operations are included in
|
|
the last access statistics (json-bool)
|
|
- "account_failed": whether failed operations are included in the
|
|
latency and last access statistics
|
|
(json-bool)
|
|
- "timed_stats": A json-array containing statistics collected in
|
|
specific intervals, with the following members:
|
|
- "interval_length": interval used for calculating the
|
|
statistics, in seconds (json-int)
|
|
- "min_rd_latency_ns": minimum latency of read operations in
|
|
the defined interval, in nanoseconds
|
|
(json-int)
|
|
- "min_wr_latency_ns": minimum latency of write operations in
|
|
the defined interval, in nanoseconds
|
|
(json-int)
|
|
- "min_flush_latency_ns": minimum latency of flush operations
|
|
in the defined interval, in
|
|
nanoseconds (json-int)
|
|
- "max_rd_latency_ns": maximum latency of read operations in
|
|
the defined interval, in nanoseconds
|
|
(json-int)
|
|
- "max_wr_latency_ns": maximum latency of write operations in
|
|
the defined interval, in nanoseconds
|
|
(json-int)
|
|
- "max_flush_latency_ns": maximum latency of flush operations
|
|
in the defined interval, in
|
|
nanoseconds (json-int)
|
|
- "avg_rd_latency_ns": average latency of read operations in
|
|
the defined interval, in nanoseconds
|
|
(json-int)
|
|
- "avg_wr_latency_ns": average latency of write operations in
|
|
the defined interval, in nanoseconds
|
|
(json-int)
|
|
- "avg_flush_latency_ns": average latency of flush operations
|
|
in the defined interval, in
|
|
nanoseconds (json-int)
|
|
- "avg_rd_queue_depth": average number of pending read
|
|
operations in the defined interval
|
|
(json-number)
|
|
- "avg_wr_queue_depth": average number of pending write
|
|
operations in the defined interval
|
|
(json-number).
|
|
- "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,
|
|
"idle_time_ns":2953431879,
|
|
"account_invalid":true,
|
|
"account_failed":false
|
|
}
|
|
},
|
|
"stats":{
|
|
"wr_highest_offset":2821110784,
|
|
"wr_bytes":9786368,
|
|
"wr_operations":692,
|
|
"rd_bytes":122739200,
|
|
"rd_operations":36604
|
|
"flush_operations":51,
|
|
"wr_total_times_ns":313253456
|
|
"rd_total_times_ns":3465673657
|
|
"flush_total_times_ns":49653,
|
|
"rd_merged":0,
|
|
"wr_merged":0,
|
|
"idle_time_ns":2953431879,
|
|
"account_invalid":true,
|
|
"account_failed":false
|
|
}
|
|
},
|
|
{
|
|
"device":"ide1-cd0",
|
|
"stats":{
|
|
"wr_highest_offset":0,
|
|
"wr_bytes":0,
|
|
"wr_operations":0,
|
|
"rd_bytes":0,
|
|
"rd_operations":0
|
|
"flush_operations":0,
|
|
"wr_total_times_ns":0
|
|
"rd_total_times_ns":0
|
|
"flush_total_times_ns":0,
|
|
"rd_merged":0,
|
|
"wr_merged":0,
|
|
"account_invalid":false,
|
|
"account_failed":false
|
|
}
|
|
},
|
|
{
|
|
"device":"floppy0",
|
|
"stats":{
|
|
"wr_highest_offset":0,
|
|
"wr_bytes":0,
|
|
"wr_operations":0,
|
|
"rd_bytes":0,
|
|
"rd_operations":0
|
|
"flush_operations":0,
|
|
"wr_total_times_ns":0
|
|
"rd_total_times_ns":0
|
|
"flush_total_times_ns":0,
|
|
"rd_merged":0,
|
|
"wr_merged":0,
|
|
"account_invalid":false,
|
|
"account_failed":false
|
|
}
|
|
},
|
|
{
|
|
"device":"sd0",
|
|
"stats":{
|
|
"wr_highest_offset":0,
|
|
"wr_bytes":0,
|
|
"wr_operations":0,
|
|
"rd_bytes":0,
|
|
"rd_operations":0
|
|
"flush_operations":0,
|
|
"wr_total_times_ns":0
|
|
"rd_total_times_ns":0
|
|
"flush_total_times_ns":0,
|
|
"rd_merged":0,
|
|
"wr_merged":0,
|
|
"account_invalid":false,
|
|
"account_failed":false
|
|
}
|
|
}
|
|
]
|
|
}
|
|
|
|
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"
|
|
}
|
|
]
|
|
}
|
|
|
|
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"
|
|
}
|
|
]
|
|
}
|
|
|
|
query-tpm-models
|
|
----------------
|
|
|
|
Return a list of supported TPM models.
|
|
|
|
Arguments: None
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-tpm-models" }
|
|
<- { "return": [ "tpm-tis" ] }
|
|
|
|
query-tpm-types
|
|
---------------
|
|
|
|
Return a list of supported TPM types.
|
|
|
|
Arguments: None
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-tpm-types" }
|
|
<- { "return": [ "passthrough" ] }
|
|
|
|
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" } }
|
|
|
|
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": {} }
|
|
|
|
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
|
|
}
|
|
]
|
|
}
|
|
|
|
blockdev-add
|
|
------------
|
|
|
|
Add a block device.
|
|
|
|
This command is still a work in progress. It doesn't support all
|
|
block drivers among other things. Stay away from it unless you want
|
|
to help with its development.
|
|
|
|
For the arguments, see the QAPI schema documentation of BlockdevOptions.
|
|
|
|
Example (1):
|
|
|
|
-> { "execute": "blockdev-add",
|
|
"arguments": { "driver": "qcow2",
|
|
"file": { "driver": "file",
|
|
"filename": "test.qcow2" } } }
|
|
<- { "return": {} }
|
|
|
|
Example (2):
|
|
|
|
-> { "execute": "blockdev-add",
|
|
"arguments": {
|
|
"driver": "qcow2",
|
|
"node-name": "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": {} }
|
|
|
|
x-blockdev-del
|
|
------------
|
|
Since 2.5
|
|
|
|
Deletes a block device that has been added using blockdev-add.
|
|
The command will fail if the node is attached to a device or is
|
|
otherwise being used.
|
|
|
|
This command is still a work in progress and is considered
|
|
experimental. Stay away from it unless you want to help with its
|
|
development.
|
|
|
|
Arguments:
|
|
|
|
- "node-name": Name of the graph node to delete (json-string)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "blockdev-add",
|
|
"arguments": {
|
|
"driver": "qcow2",
|
|
"node-name": "node0",
|
|
"file": {
|
|
"driver": "file",
|
|
"filename": "test.qcow2"
|
|
}
|
|
}
|
|
}
|
|
|
|
<- { "return": {} }
|
|
|
|
-> { "execute": "x-blockdev-del",
|
|
"arguments": { "node-name": "node0" }
|
|
}
|
|
<- { "return": {} }
|
|
|
|
blockdev-open-tray
|
|
------------------
|
|
|
|
Opens a block device's tray. If there is a block driver state tree inserted as a
|
|
medium, it will become inaccessible to the guest (but it will remain associated
|
|
to the block device, so closing the tray will make it accessible again).
|
|
|
|
If the tray was already open before, this will be a no-op.
|
|
|
|
Once the tray opens, a DEVICE_TRAY_MOVED event is emitted. There are cases in
|
|
which no such event will be generated, these include:
|
|
- if the guest has locked the tray, @force is false and the guest does not
|
|
respond to the eject request
|
|
- if the BlockBackend denoted by @device does not have a guest device attached
|
|
to it
|
|
- if the guest device does not have an actual tray and is empty, for instance
|
|
for floppy disk drives
|
|
|
|
Arguments:
|
|
|
|
- "device": block device name (deprecated, use @id instead)
|
|
(json-string, optional)
|
|
- "id": the name or QOM path of the guest device (json-string, optional)
|
|
- "force": if false (the default), an eject request will be sent to the guest if
|
|
it has locked the tray (and the tray will not be opened immediately);
|
|
if true, the tray will be opened regardless of whether it is locked
|
|
(json-bool, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "blockdev-open-tray",
|
|
"arguments": { "id": "ide0-1-0" } }
|
|
|
|
<- { "timestamp": { "seconds": 1418751016,
|
|
"microseconds": 716996 },
|
|
"event": "DEVICE_TRAY_MOVED",
|
|
"data": { "device": "ide1-cd0",
|
|
"id": "ide0-1-0",
|
|
"tray-open": true } }
|
|
|
|
<- { "return": {} }
|
|
|
|
blockdev-close-tray
|
|
-------------------
|
|
|
|
Closes a block device's tray. If there is a block driver state tree associated
|
|
with the block device (which is currently ejected), that tree will be loaded as
|
|
the medium.
|
|
|
|
If the tray was already closed before, this will be a no-op.
|
|
|
|
Arguments:
|
|
|
|
- "device": block device name (deprecated, use @id instead)
|
|
(json-string, optional)
|
|
- "id": the name or QOM path of the guest device (json-string, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "blockdev-close-tray",
|
|
"arguments": { "id": "ide0-1-0" } }
|
|
|
|
<- { "timestamp": { "seconds": 1418751345,
|
|
"microseconds": 272147 },
|
|
"event": "DEVICE_TRAY_MOVED",
|
|
"data": { "device": "ide1-cd0",
|
|
"id": "ide0-1-0",
|
|
"tray-open": false } }
|
|
|
|
<- { "return": {} }
|
|
|
|
x-blockdev-remove-medium
|
|
------------------------
|
|
|
|
Removes a medium (a block driver state tree) from a block device. That block
|
|
device's tray must currently be open (unless there is no attached guest device).
|
|
|
|
If the tray is open and there is no medium inserted, this will be a no-op.
|
|
|
|
This command is still a work in progress and is considered experimental.
|
|
Stay away from it unless you want to help with its development.
|
|
|
|
Arguments:
|
|
|
|
- "device": block device name (deprecated, use @id instead)
|
|
(json-string, optional)
|
|
- "id": the name or QOM path of the guest device (json-string, optional)
|
|
|
|
Example:
|
|
|
|
-> { "execute": "x-blockdev-remove-medium",
|
|
"arguments": { "id": "ide0-1-0" } }
|
|
|
|
<- { "error": { "class": "GenericError",
|
|
"desc": "Tray of device 'ide0-1-0' is not open" } }
|
|
|
|
-> { "execute": "blockdev-open-tray",
|
|
"arguments": { "id": "ide0-1-0" } }
|
|
|
|
<- { "timestamp": { "seconds": 1418751627,
|
|
"microseconds": 549958 },
|
|
"event": "DEVICE_TRAY_MOVED",
|
|
"data": { "device": "ide1-cd0",
|
|
"id": "ide0-1-0",
|
|
"tray-open": true } }
|
|
|
|
<- { "return": {} }
|
|
|
|
-> { "execute": "x-blockdev-remove-medium",
|
|
"arguments": { "device": "ide0-1-0" } }
|
|
|
|
<- { "return": {} }
|
|
|
|
x-blockdev-insert-medium
|
|
------------------------
|
|
|
|
Inserts a medium (a block driver state tree) into a block device. That block
|
|
device's tray must currently be open (unless there is no attached guest device)
|
|
and there must be no medium inserted already.
|
|
|
|
This command is still a work in progress and is considered experimental.
|
|
Stay away from it unless you want to help with its development.
|
|
|
|
Arguments:
|
|
|
|
- "device": block device name (deprecated, use @id instead)
|
|
(json-string, optional)
|
|
- "id": the name or QOM path of the guest device (json-string, optional)
|
|
- "node-name": root node of the BDS tree to insert into the block device
|
|
|
|
Example:
|
|
|
|
-> { "execute": "blockdev-add",
|
|
"arguments": { { "node-name": "node0",
|
|
"driver": "raw",
|
|
"file": { "driver": "file",
|
|
"filename": "fedora.iso" } } }
|
|
|
|
<- { "return": {} }
|
|
|
|
-> { "execute": "x-blockdev-insert-medium",
|
|
"arguments": { "id": "ide0-1-0",
|
|
"node-name": "node0" } }
|
|
|
|
<- { "return": {} }
|
|
|
|
x-blockdev-change
|
|
-----------------
|
|
|
|
Dynamically reconfigure the block driver state graph. It can be used
|
|
to add, remove, insert or replace a graph node. Currently only the
|
|
Quorum driver implements this feature to add or remove its child. This
|
|
is useful to fix a broken quorum child.
|
|
|
|
If @node is specified, it will be inserted under @parent. @child
|
|
may not be specified in this case. If both @parent and @child are
|
|
specified but @node is not, @child will be detached from @parent.
|
|
|
|
Arguments:
|
|
- "parent": the id or name of the parent node (json-string)
|
|
- "child": the name of a child under the given parent node (json-string, optional)
|
|
- "node": the name of the node that will be added (json-string, optional)
|
|
|
|
Note: this command is experimental, and not a stable API. It doesn't
|
|
support all kinds of operations, all kinds of children, nor all block
|
|
drivers.
|
|
|
|
Warning: The data in a new quorum child MUST be consistent with that of
|
|
the rest of the array.
|
|
|
|
Example:
|
|
|
|
Add a new node to a quorum
|
|
-> { "execute": "blockdev-add",
|
|
"arguments": { "driver": "raw",
|
|
"node-name": "new_node",
|
|
"file": { "driver": "file",
|
|
"filename": "test.raw" } } }
|
|
<- { "return": {} }
|
|
-> { "execute": "x-blockdev-change",
|
|
"arguments": { "parent": "disk1",
|
|
"node": "new_node" } }
|
|
<- { "return": {} }
|
|
|
|
Delete a quorum's node
|
|
-> { "execute": "x-blockdev-change",
|
|
"arguments": { "parent": "disk1",
|
|
"child": "children.1" } }
|
|
<- { "return": {} }
|
|
|
|
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
|
|
}
|
|
} } ] }
|
|
|
|
blockdev-change-medium
|
|
----------------------
|
|
|
|
Changes the medium inserted into a block device by ejecting the current medium
|
|
and loading a new image file which is inserted as the new medium.
|
|
|
|
Arguments:
|
|
|
|
- "device": block device name (deprecated, use @id instead)
|
|
(json-string, optional)
|
|
- "id": the name or QOM path of the guest device (json-string, optional)
|
|
- "filename": filename of the new image (json-string)
|
|
- "format": format of the new image (json-string, optional)
|
|
- "read-only-mode": new read-only mode (json-string, optional)
|
|
- Possible values: "retain" (default), "read-only", "read-write"
|
|
|
|
Examples:
|
|
|
|
1. Change a removable medium
|
|
|
|
-> { "execute": "blockdev-change-medium",
|
|
"arguments": { "id": "ide0-1-0",
|
|
"filename": "/srv/images/Fedora-12-x86_64-DVD.iso",
|
|
"format": "raw" } }
|
|
<- { "return": {} }
|
|
|
|
2. Load a read-only medium into a writable drive
|
|
|
|
-> { "execute": "blockdev-change-medium",
|
|
"arguments": { "id": "floppyA",
|
|
"filename": "/srv/images/ro.img",
|
|
"format": "raw",
|
|
"read-only-mode": "retain" } }
|
|
|
|
<- { "error":
|
|
{ "class": "GenericError",
|
|
"desc": "Could not open '/srv/images/ro.img': Permission denied" } }
|
|
|
|
-> { "execute": "blockdev-change-medium",
|
|
"arguments": { "id": "floppyA",
|
|
"filename": "/srv/images/ro.img",
|
|
"format": "raw",
|
|
"read-only-mode": "read-only" } }
|
|
|
|
<- { "return": {} }
|
|
|
|
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"
|
|
},
|
|
{
|
|
"id": "mem1",
|
|
"size": 536870912,
|
|
"merge": false,
|
|
"dump": true,
|
|
"prealloc": true,
|
|
"host-nodes": [2, 3],
|
|
"policy": "preferred"
|
|
}
|
|
]
|
|
}
|
|
|
|
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"
|
|
} ] }
|
|
|
|
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}
|
|
]}
|
|
|
|
rtc-reset-reinjection
|
|
---------------------
|
|
|
|
Reset the RTC interrupt reinjection backlog.
|
|
|
|
Arguments: None.
|
|
|
|
Example:
|
|
|
|
-> { "execute": "rtc-reset-reinjection" }
|
|
<- { "return": {} }
|
|
|
|
trace-event-get-state
|
|
---------------------
|
|
|
|
Query the state of events.
|
|
|
|
Arguments:
|
|
|
|
- "name": Event name pattern (json-string).
|
|
- "vcpu": The vCPU to query, any vCPU by default (json-int, optional).
|
|
|
|
An event is returned if:
|
|
- its name matches the "name" pattern, and
|
|
- if "vcpu" is given, the event has the "vcpu" property.
|
|
|
|
Therefore, if "vcpu" is given, the operation will only match per-vCPU events,
|
|
returning their state on the specified vCPU. Special case: if "name" is an exact
|
|
match, "vcpu" is given and the event does not have the "vcpu" property, an error
|
|
is returned.
|
|
|
|
Example:
|
|
|
|
-> { "execute": "trace-event-get-state", "arguments": { "name": "qemu_memalign" } }
|
|
<- { "return": [ { "name": "qemu_memalign", "state": "disabled" } ] }
|
|
|
|
trace-event-set-state
|
|
---------------------
|
|
|
|
Set the state of events.
|
|
|
|
Arguments:
|
|
|
|
- "name": Event name pattern (json-string).
|
|
- "enable": Whether to enable or disable the event (json-bool).
|
|
- "ignore-unavailable": Whether to ignore errors for events that cannot be
|
|
changed (json-bool, optional).
|
|
- "vcpu": The vCPU to act upon, all vCPUs by default (json-int, optional).
|
|
|
|
An event's state is modified if:
|
|
- its name matches the "name" pattern, and
|
|
- if "vcpu" is given, the event has the "vcpu" property.
|
|
|
|
Therefore, if "vcpu" is given, the operation will only match per-vCPU events,
|
|
setting their state on the specified vCPU. Special case: if "name" is an exact
|
|
match, "vcpu" is given and the event does not have the "vcpu" property, an error
|
|
is returned.
|
|
|
|
Example:
|
|
|
|
-> { "execute": "trace-event-set-state", "arguments": { "name": "qemu_memalign", "enable": "true" } }
|
|
<- { "return": {} }
|
|
|
|
input-send-event
|
|
----------------
|
|
|
|
Send input event to guest.
|
|
|
|
Arguments:
|
|
|
|
- "device": display device (json-string, optional)
|
|
- "head": display head (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.
|
|
|
|
Example (1):
|
|
|
|
Press left mouse button.
|
|
|
|
-> { "execute": "input-send-event",
|
|
"arguments": { "device": "video0",
|
|
"events": [ { "type": "btn",
|
|
"data" : { "down": true, "button": "left" } } ] } }
|
|
<- { "return": {} }
|
|
|
|
-> { "execute": "input-send-event",
|
|
"arguments": { "device": "video0",
|
|
"events": [ { "type": "btn",
|
|
"data" : { "down": false, "button": "left" } } ] } }
|
|
<- { "return": {} }
|
|
|
|
Example (2):
|
|
|
|
Press ctrl-alt-del.
|
|
|
|
-> { "execute": "input-send-event",
|
|
"arguments": { "events": [
|
|
{ "type": "key", "data" : { "down": true,
|
|
"key": {"type": "qcode", "data": "ctrl" } } },
|
|
{ "type": "key", "data" : { "down": true,
|
|
"key": {"type": "qcode", "data": "alt" } } },
|
|
{ "type": "key", "data" : { "down": true,
|
|
"key": {"type": "qcode", "data": "delete" } } } ] } }
|
|
<- { "return": {} }
|
|
|
|
Example (3):
|
|
|
|
Move mouse pointer to absolute coordinates (20000, 400).
|
|
|
|
-> { "execute": "input-send-event" ,
|
|
"arguments": { "events": [
|
|
{ "type": "abs", "data" : { "axis": "x", "value" : 20000 } },
|
|
{ "type": "abs", "data" : { "axis": "y", "value" : 400 } } ] } }
|
|
<- { "return": {} }
|
|
|
|
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": {} }
|
|
|
|
Show rocker switch
|
|
------------------
|
|
|
|
Arguments:
|
|
|
|
- "name": switch name
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-rocker", "arguments": { "name": "sw1" } }
|
|
<- { "return": {"name": "sw1", "ports": 2, "id": 1327446905938}}
|
|
|
|
Show rocker switch ports
|
|
------------------------
|
|
|
|
Arguments:
|
|
|
|
- "name": switch name
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-rocker-ports", "arguments": { "name": "sw1" } }
|
|
<- { "return": [ {"duplex": "full", "enabled": true, "name": "sw1.1",
|
|
"autoneg": "off", "link-up": true, "speed": 10000},
|
|
{"duplex": "full", "enabled": true, "name": "sw1.2",
|
|
"autoneg": "off", "link-up": true, "speed": 10000}
|
|
]}
|
|
|
|
Show rocker switch OF-DPA flow tables
|
|
-------------------------------------
|
|
|
|
Arguments:
|
|
|
|
- "name": switch name
|
|
- "tbl-id": (optional) flow table ID
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-rocker-of-dpa-flows", "arguments": { "name": "sw1" } }
|
|
<- { "return": [ {"key": {"in-pport": 0, "priority": 1, "tbl-id": 0},
|
|
"hits": 138,
|
|
"cookie": 0,
|
|
"action": {"goto-tbl": 10},
|
|
"mask": {"in-pport": 4294901760}
|
|
},
|
|
{...more...},
|
|
]}
|
|
|
|
Show rocker OF-DPA group tables
|
|
-------------------------------
|
|
|
|
Arguments:
|
|
|
|
- "name": switch name
|
|
- "type": (optional) group type
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-rocker-of-dpa-groups", "arguments": { "name": "sw1" } }
|
|
<- { "return": [ {"type": 0, "out-pport": 2, "pport": 2, "vlan-id": 3841,
|
|
"pop-vlan": 1, "id": 251723778},
|
|
{"type": 0, "out-pport": 0, "pport": 0, "vlan-id": 3841,
|
|
"pop-vlan": 1, "id": 251723776},
|
|
{"type": 0, "out-pport": 1, "pport": 1, "vlan-id": 3840,
|
|
"pop-vlan": 1, "id": 251658241},
|
|
{"type": 0, "out-pport": 0, "pport": 0, "vlan-id": 3840,
|
|
"pop-vlan": 1, "id": 251658240}
|
|
]}
|
|
|
|
query-gic-capabilities
|
|
---------------
|
|
|
|
Return a list of GICCapability objects, describing supported GIC
|
|
(Generic Interrupt Controller) versions.
|
|
|
|
Arguments: None
|
|
|
|
Example:
|
|
|
|
-> { "execute": "query-gic-capabilities" }
|
|
<- { "return": [{ "version": 2, "emulated": true, "kernel": false },
|
|
{ "version": 3, "emulated": false, "kernel": true } ] }
|
|
|
|
Show existing/possible CPUs
|
|
---------------------------
|
|
|
|
Arguments: None.
|
|
|
|
Example for pseries machine type started with
|
|
-smp 2,cores=2,maxcpus=4 -cpu POWER8:
|
|
|
|
-> { "execute": "query-hotpluggable-cpus" }
|
|
<- {"return": [
|
|
{ "props": { "core-id": 8 }, "type": "POWER8-spapr-cpu-core",
|
|
"vcpus-count": 1 },
|
|
{ "props": { "core-id": 0 }, "type": "POWER8-spapr-cpu-core",
|
|
"vcpus-count": 1, "qom-path": "/machine/unattached/device[0]"}
|
|
]}'
|
|
|
|
Example for pc machine type started with
|
|
-smp 1,maxcpus=2:
|
|
-> { "execute": "query-hotpluggable-cpus" }
|
|
<- {"return": [
|
|
{
|
|
"type": "qemu64-x86_64-cpu", "vcpus-count": 1,
|
|
"props": {"core-id": 0, "socket-id": 1, "thread-id": 0}
|
|
},
|
|
{
|
|
"qom-path": "/machine/unattached/device[0]",
|
|
"type": "qemu64-x86_64-cpu", "vcpus-count": 1,
|
|
"props": {"core-id": 0, "socket-id": 0, "thread-id": 0}
|
|
}
|
|
]}
|