Server's responses in the examples below are always a success response, please
refer to the QMP specification for more details on error responses.
-eject
------
-
-Eject a removable medium.
-
-Arguments:
-
-- "force": force ejection (json-bool, optional)
-- "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": "eject", "arguments": { "id": "ide0-1-0" } }
-<- { "return": {} }
-
-Note: The "force" argument defaults to false.
-
-change
-------
-
-Change a removable medium or VNC configuration.
-
-Arguments:
-
-- "device": device name (json-string)
-- "target": filename or item (json-string)
-- "arg": additional argument (json-string, optional)
-
-Examples:
-
-1. Change a removable medium
-
--> { "execute": "change",
- "arguments": { "device": "ide1-cd0",
- "target": "/srv/images/Fedora-12-x86_64-DVD.iso" } }
-<- { "return": {} }
-
-2. Change VNC password
-
--> { "execute": "change",
- "arguments": { "device": "vnc", "target": "password",
- "arg": "foobar1" } }
-<- { "return": {} }
-
-screendump
-----------
-
-Save screen into PPM image.
-
-Arguments:
-
-- "filename": file path (json-string)
-
-Example:
-
--> { "execute": "screendump", "arguments": { "filename": "/tmp/image" } }
-<- { "return": {} }
-
device_add
----------
(2) It's possible to list device properties by running QEMU with the
"-device DEVICE,\?" command-line argument, where DEVICE is the device's name
-device_del
-----------
-
-Remove a device.
-
-Arguments:
-
-- "id": the device's ID or QOM path (json-string)
-
-Example:
-
--> { "execute": "device_del", "arguments": { "id": "net1" } }
-<- { "return": {} }
-
-Example:
-
--> { "execute": "device_del", "arguments": { "id": "/machine/peripheral-anon/device[0]" } }
-<- { "return": {} }
-
-send-key
-----------
-
-Send keys to VM.
-
-Arguments:
-
-keys array:
- - "key": key sequence (a json-array of key union values,
- union can be number or qcode enum)
-
-- hold-time: time to delay key up events, milliseconds. Defaults to 100
- (json-int, optional)
-
-Example:
-
--> { "execute": "send-key",
- "arguments": { "keys": [ { "type": "qcode", "data": "ctrl" },
- { "type": "qcode", "data": "alt" },
- { "type": "qcode", "data": "delete" } ] } }
-<- { "return": {} }
-
cpu
---
Note: CPUs' indexes are obtained with the 'query-cpus' command.
-xen-save-devices-state
--------
-
-Save the state of all devices to file. The RAM and the block devices
-of the VM are not saved by this command.
-
-Arguments:
-
-- "filename": the file to save the state of the devices to as binary
-data. See xen-save-devices-state.txt for a description of the binary
-format.
-
-Example:
-
--> { "execute": "xen-save-devices-state",
- "arguments": { "filename": "/tmp/save" } }
-<- { "return": {} }
-
xen-load-devices-state
----------------------
"arguments": { "filename": "/tmp/resume" } }
<- { "return": {} }
-xen-set-global-dirty-log
--------
-
-Enable or disable the global dirty log mode.
-
-Arguments:
-
-- "enable": Enable it or disable it.
-
-Example:
-
--> { "execute": "xen-set-global-dirty-log",
- "arguments": { "enable": true } }
-<- { "return": {} }
-
-migrate
--------
-
-Migrate to URI.
-
-Arguments:
-
-- "blk": block migration, full disk copy (json-bool, optional)
-- "inc": incremental disk copy (json-bool, optional)
-- "uri": Destination URI (json-string)
-
-Example:
-
--> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } }
-<- { "return": {} }
-
-Notes:
-
-(1) The 'query-migrate' command should be used to check migration's progress
- and final result (this information is provided by the 'status' member)
-(2) All boolean arguments default to false
-(3) The user Monitor's "detach" argument is invalid in QMP and should not
- be used
-
-migrate_cancel
---------------
-
-Cancel the current migration.
-
-Arguments: None.
-
-Example:
-
--> { "execute": "migrate_cancel" }
-<- { "return": {} }
-
-migrate-incoming
-----------------
-
-Continue an incoming migration
-
-Arguments:
-
-- "uri": Source/listening URI (json-string)
-
-Example:
-
--> { "execute": "migrate-incoming", "arguments": { "uri": "tcp::4446" } }
-<- { "return": {} }
-
-Notes:
-
-(1) QEMU must be started with -incoming defer to allow migrate-incoming to
- be used
-(2) The uri format is the same as for -incoming
-
migrate-set-cache-size
----------------------
-> { "execute": "migrate-set-cache-size", "arguments": { "value": 536870912 } }
<- { "return": {} }
-query-migrate-cache-size
-------------------------
-
-Show cache size to be used by XBZRLE migration
-
-returns a json-object with the following information:
-- "size" : json-int
-
-Example:
-
--> { "execute": "query-migrate-cache-size" }
-<- { "return": 67108864 }
-
-migrate_set_speed
------------------
-
-Set maximum speed for migrations.
-
-Arguments:
-
-- "value": maximum speed, in bytes per second (json-int)
-
-Example:
-
--> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } }
-<- { "return": {} }
-
-migrate_set_downtime
---------------------
-
-Set maximum tolerated downtime (in seconds) for migrations.
-
-Arguments:
-
-- "value": maximum downtime (json-number)
-
-Example:
-
--> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } }
-<- { "return": {} }
-
x-colo-lost-heartbeat
--------------------
-> { "execute": "x-colo-lost-heartbeat" }
<- { "return": {} }
-dump
-
-
-Dump guest memory to file. The file can be processed with crash or gdb.
-
-Arguments:
-
-- "paging": do paging to get guest's memory mapping (json-bool)
-- "protocol": destination file(started with "file:") or destination file
- descriptor (started with "fd:") (json-string)
-- "detach": if specified, command will return immediately, without waiting
- for the dump to finish. The user can track progress using
- "query-dump". (json-bool)
-- "begin": the starting physical address. It's optional, and should be specified
- with length together (json-int)
-- "length": the memory size, in bytes. It's optional, and should be specified
- with begin together (json-int)
-- "format": the format of guest memory dump. It's optional, and can be
- elf|kdump-zlib|kdump-lzo|kdump-snappy, but non-elf formats will
- conflict with paging and filter, ie. begin and length (json-string)
-
-Example:
-
--> { "execute": "dump-guest-memory", "arguments": { "protocol": "fd:dump" } }
-<- { "return": {} }
-
-Notes:
-
-(1) All boolean arguments default to false
-
-query-dump-guest-memory-capability
-----------
-
-Show available formats for 'dump-guest-memory'
-
-Example:
-
--> { "execute": "query-dump-guest-memory-capability" }
-<- { "return": { "formats":
- ["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
-
query-dump
----------
<- { "return": { "status": "active", "completed": 1024000,
"total": 2048000 } }
-dump-skeys
-----------
+blockdev-mirror
+------------
-Save guest storage keys to file.
+Start mirroring a block device's writes to another block device. target
+specifies the target of mirror operation.
Arguments:
-- "filename": file path (json-string)
-
-Example:
-
--> { "execute": "dump-skeys", "arguments": { "filename": "/tmp/skeys" } }
-<- { "return": {} }
-
-netdev_add
-----------
-
-Add host network device.
-
-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')
-- "type": the device type, "tap", "user", ... (json-string)
-- "id": the device's ID, must be unique (json-string)
-- device options
+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": "netdev_add",
- "arguments": { "type": "user", "id": "netdev1",
- "dnssearch": "example.org" } }
+-> { "execute": "blockdev-mirror", "arguments": { "device": "ide-hd0",
+ "target": "target0",
+ "sync": "full" } }
<- { "return": {} }
-Note: The supported device options are the same ones supported by the '-netdev'
- command-line argument, which are listed in the '-help' output or QEMU's
- manual
-
-netdev_del
-----------
-
-Remove host network device.
+qmp_capabilities
+----------------
-Arguments:
+Enable QMP capabilities.
-- "id": the device's ID, must be unique (json-string)
+Arguments: None.
Example:
--> { "execute": "netdev_del", "arguments": { "id": "netdev1" } }
+-> { "execute": "qmp_capabilities" }
<- { "return": {} }
+Note: This command must be issued before issuing any other command.
-object-add
-----------
-
-Create QOM object.
+3. Query Commands
+=================
-Arguments:
-- "qom-type": the object's QOM type, i.e. the class name (json-string)
-- "id": the object's ID, must be unique (json-string)
-- "props": a dictionary of object property values (optional, json-dict)
+query-qmp-schema
+----------------
-Example:
+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.
--> { "execute": "object-add", "arguments": { "qom-type": "rng-random", "id": "rng1",
- "props": { "filename": "/dev/hwrng" } } }
-<- { "return": {} }
+x-blockdev-change
+-----------------
-object-del
-----------
+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.
-Remove QOM object.
+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)
-- "id": the object's ID (json-string)
-
-Example:
-
--> { "execute": "object-del", "arguments": { "id": "rng1" } }
-<- { "return": {} }
-
-
-block_resize
-------------
-
-Resize a block image while a guest is running.
-
-Arguments:
+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.
-- "device": the device's ID, must be unique (json-string)
-- "node-name": the node name in the block driver state graph (json-string)
-- "size": new size
+Warning: The data in a new quorum child MUST be consistent with that of
+the rest of the array.
Example:
--> { "execute": "block_resize", "arguments": { "device": "scratch", "size": 1073741824 } }
-<- { "return": {} }
-
-block-stream
-------------
-
-Copy data from a backing file into a block device.
-
-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 (json-string)
-- "base": The file name of the backing image above which copying starts.
- It cannot be set if 'base-node' is also set (json-string, optional)
-- "base-node": the node name of the backing image above which copying starts.
- It cannot be set if 'base' is also set.
- (json-string, optional) (Since 2.8)
-- "backing-file": The backing file string to write into the active layer. This
- filename is not validated.
-
- If a pathname string is such that it cannot be resolved by
- QEMU, that means that subsequent QMP or HMP commands must use
- node-names for the image in question, as filename lookup
- methods will fail.
-
- If not specified, QEMU will automatically determine the
- backing file string to use, or error out if there is no
- obvious choice. Care should be taken when specifying the
- string, to specify a valid filename or protocol.
- (json-string, optional) (Since 2.1)
-- "speed": the maximum speed, in bytes per second (json-int, optional)
-- "on-error": the action to take on an error (default 'report'). 'stop' and
- 'enospc' can only be used if the block device supports io-status.
- (json-string, optional) (Since 2.1)
-
-Example:
-
--> { "execute": "block-stream", "arguments": { "device": "virtio0",
- "base": "/tmp/master.qcow2" } }
-<- { "return": {} }
-
-block-commit
-------------
-
-Live commit of data from overlay image nodes into backing nodes - i.e., writes
-data between 'top' and 'base' into 'base'.
-
-Arguments:
-
-- "job-id": 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 (json-string)
-- "base": The file name of the backing image to write data into.
- If not specified, this is the deepest backing image
- (json-string, optional)
-- "top": The file name of the backing image within the image chain,
- which contains the topmost data to be committed down. If
- not specified, this is the active layer. (json-string, optional)
-
-- backing-file: The backing file string to write into the overlay
- image of 'top'. If 'top' is the active layer,
- specifying a backing file string is an error. This
- filename is not validated.
-
- If a pathname string is such that it cannot be
- resolved by QEMU, that means that subsequent QMP or
- HMP commands must use node-names for the image in
- question, as filename lookup methods will fail.
-
- If not specified, QEMU will automatically determine
- the backing file string to use, or error out if
- there is no obvious choice. Care should be taken
- when specifying the string, to specify a valid
- filename or protocol.
- (json-string, optional) (Since 2.1)
-
- If top == base, that is an error.
- If top == active, the job will not be completed by itself,
- user needs to complete the job with the block-job-complete
- command after getting the ready event. (Since 2.0)
-
- If the base image is smaller than top, then the base image
- will be resized to be the same size as top. If top is
- smaller than the base image, the base will not be
- truncated. If you want the base image size to match the
- size of the smaller top, you can safely truncate it
- yourself once the commit operation successfully completes.
- (json-string)
-- "speed": the maximum speed, in bytes per second (json-int, optional)
-
-
-Example:
-
--> { "execute": "block-commit", "arguments": { "device": "virtio0",
- "top": "/tmp/snap1.qcow2" } }
-<- { "return": {} }
-
-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" } } }
+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",
"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}
- }
- ]}
projects / mirror_qemu.git / blobdiff