4 # == Block core (VM unrelated)
7 { 'include': 'common.json' }
8 { 'include': 'crypto.json' }
9 { 'include': 'sockets.json' }
14 # @id: unique snapshot id
16 # @name: user chosen name
18 # @vm-state-size: size of the VM state
20 # @date-sec: UTC date of the snapshot in seconds
22 # @date-nsec: fractional part in nano seconds to be used with date-sec
24 # @vm-clock-sec: VM clock relative to boot in seconds
26 # @vm-clock-nsec: fractional part in nano seconds to be used with vm-clock-sec
31 { 'struct': 'SnapshotInfo',
32 'data': { 'id': 'str', 'name': 'str', 'vm-state-size': 'int',
33 'date-sec': 'int', 'date-nsec': 'int',
34 'vm-clock-sec': 'int', 'vm-clock-nsec': 'int' } }
37 # @ImageInfoSpecificQCow2EncryptionBase:
39 # @format: The encryption format
43 { 'struct': 'ImageInfoSpecificQCow2EncryptionBase',
44 'data': { 'format': 'BlockdevQcow2EncryptionFormat'}}
47 # @ImageInfoSpecificQCow2Encryption:
51 { 'union': 'ImageInfoSpecificQCow2Encryption',
52 'base': 'ImageInfoSpecificQCow2EncryptionBase',
53 'discriminator': 'format',
54 'data': { 'aes': 'QCryptoBlockInfoQCow',
55 'luks': 'QCryptoBlockInfoLUKS' } }
58 # @ImageInfoSpecificQCow2:
60 # @compat: compatibility level
62 # @lazy-refcounts: on or off; only valid for compat >= 1.1
64 # @corrupt: true if the image has been marked corrupt; only valid for
65 # compat >= 1.1 (since 2.2)
67 # @refcount-bits: width of a refcount entry in bits (since 2.3)
69 # @encrypt: details about encryption parameters; only set if image
70 # is encrypted (since 2.10)
74 { 'struct': 'ImageInfoSpecificQCow2',
77 '*lazy-refcounts': 'bool',
79 'refcount-bits': 'int',
80 '*encrypt': 'ImageInfoSpecificQCow2Encryption'
84 # @ImageInfoSpecificVmdk:
86 # @create-type: The create type of VMDK image
88 # @cid: Content id of image
90 # @parent-cid: Parent VMDK image's cid
92 # @extents: List of extent files
96 { 'struct': 'ImageInfoSpecificVmdk',
101 'extents': ['ImageInfo']
105 # @ImageInfoSpecific:
107 # A discriminated record of image format specific information structures.
111 { 'union': 'ImageInfoSpecific',
113 'qcow2': 'ImageInfoSpecificQCow2',
114 'vmdk': 'ImageInfoSpecificVmdk',
115 # If we need to add block driver specific parameters for
116 # LUKS in future, then we'll subclass QCryptoBlockInfoLUKS
117 # to define a ImageInfoSpecificLUKS
118 'luks': 'QCryptoBlockInfoLUKS'
124 # Information about a QEMU image file
126 # @filename: name of the image file
128 # @format: format of the image file
130 # @virtual-size: maximum capacity in bytes of the image
132 # @actual-size: actual size on disk in bytes of the image
134 # @dirty-flag: true if image is not cleanly closed
136 # @cluster-size: size of a cluster in bytes
138 # @encrypted: true if the image is encrypted
140 # @compressed: true if the image is compressed (Since 1.7)
142 # @backing-filename: name of the backing file
144 # @full-backing-filename: full path of the backing file
146 # @backing-filename-format: the format of the backing file
148 # @snapshots: list of VM snapshots
150 # @backing-image: info of the backing image (since 1.6)
152 # @format-specific: structure supplying additional format-specific
153 # information (since 1.7)
158 { 'struct': 'ImageInfo',
159 'data': {'filename': 'str', 'format': 'str', '*dirty-flag': 'bool',
160 '*actual-size': 'int', 'virtual-size': 'int',
161 '*cluster-size': 'int', '*encrypted': 'bool', '*compressed': 'bool',
162 '*backing-filename': 'str', '*full-backing-filename': 'str',
163 '*backing-filename-format': 'str', '*snapshots': ['SnapshotInfo'],
164 '*backing-image': 'ImageInfo',
165 '*format-specific': 'ImageInfoSpecific' } }
170 # Information about a QEMU image file check
172 # @filename: name of the image file checked
174 # @format: format of the image file checked
176 # @check-errors: number of unexpected errors occurred during check
178 # @image-end-offset: offset (in bytes) where the image ends, this
179 # field is present if the driver for the image format
182 # @corruptions: number of corruptions found during the check if any
184 # @leaks: number of leaks found during the check if any
186 # @corruptions-fixed: number of corruptions fixed during the check
189 # @leaks-fixed: number of leaks fixed during the check if any
191 # @total-clusters: total number of clusters, this field is present
192 # if the driver for the image format supports it
194 # @allocated-clusters: total number of allocated clusters, this
195 # field is present if the driver for the image format
198 # @fragmented-clusters: total number of fragmented clusters, this
199 # field is present if the driver for the image format
202 # @compressed-clusters: total number of compressed clusters, this
203 # field is present if the driver for the image format
209 { 'struct': 'ImageCheck',
210 'data': {'filename': 'str', 'format': 'str', 'check-errors': 'int',
211 '*image-end-offset': 'int', '*corruptions': 'int', '*leaks': 'int',
212 '*corruptions-fixed': 'int', '*leaks-fixed': 'int',
213 '*total-clusters': 'int', '*allocated-clusters': 'int',
214 '*fragmented-clusters': 'int', '*compressed-clusters': 'int' } }
219 # Mapping information from a virtual block range to a host file range
221 # @start: the start byte of the mapped virtual range
223 # @length: the number of bytes of the mapped virtual range
225 # @data: whether the mapped range has data
227 # @zero: whether the virtual blocks are zeroed
229 # @depth: the depth of the mapping
231 # @offset: the offset in file that the virtual sectors are mapped to
233 # @filename: filename that is referred to by @offset
238 { 'struct': 'MapEntry',
239 'data': {'start': 'int', 'length': 'int', 'data': 'bool',
240 'zero': 'bool', 'depth': 'int', '*offset': 'int',
241 '*filename': 'str' } }
244 # @BlockdevCacheInfo:
246 # Cache mode information for a block device
248 # @writeback: true if writeback mode is enabled
249 # @direct: true if the host page cache is bypassed (O_DIRECT)
250 # @no-flush: true if flush requests are ignored for the device
254 { 'struct': 'BlockdevCacheInfo',
255 'data': { 'writeback': 'bool',
257 'no-flush': 'bool' } }
262 # Information about the backing device for a block device.
264 # @file: the filename of the backing device
266 # @node-name: the name of the block driver node (Since 2.0)
268 # @ro: true if the backing device was open read-only
270 # @drv: the name of the block format used to open the backing device. As of
271 # 0.14.0 this can be: 'blkdebug', 'bochs', 'cloop', 'cow', 'dmg',
272 # 'file', 'file', 'ftp', 'ftps', 'host_cdrom', 'host_device',
273 # 'http', 'https', 'luks', 'nbd', 'parallels', 'qcow',
274 # 'qcow2', 'raw', 'vdi', 'vmdk', 'vpc', 'vvfat'
275 # 2.2: 'archipelago' added, 'cow' dropped
276 # 2.3: 'host_floppy' deprecated
277 # 2.5: 'host_floppy' dropped
279 # 2.8: 'replication' added, 'tftp' dropped
280 # 2.9: 'archipelago' dropped
282 # @backing_file: the name of the backing file (for copy-on-write)
284 # @backing_file_depth: number of files in the backing file chain (since: 1.2)
286 # @encrypted: true if the backing device is encrypted
288 # @encryption_key_missing: Deprecated; always false
290 # @detect_zeroes: detect and optimize zero writes (Since 2.1)
292 # @bps: total throughput limit in bytes per second is specified
294 # @bps_rd: read throughput limit in bytes per second is specified
296 # @bps_wr: write throughput limit in bytes per second is specified
298 # @iops: total I/O operations per second is specified
300 # @iops_rd: read I/O operations per second is specified
302 # @iops_wr: write I/O operations per second is specified
304 # @image: the info of image used (since: 1.6)
306 # @bps_max: total throughput limit during bursts,
307 # in bytes (Since 1.7)
309 # @bps_rd_max: read throughput limit during bursts,
310 # in bytes (Since 1.7)
312 # @bps_wr_max: write throughput limit during bursts,
313 # in bytes (Since 1.7)
315 # @iops_max: total I/O operations per second during bursts,
316 # in bytes (Since 1.7)
318 # @iops_rd_max: read I/O operations per second during bursts,
319 # in bytes (Since 1.7)
321 # @iops_wr_max: write I/O operations per second during bursts,
322 # in bytes (Since 1.7)
324 # @bps_max_length: maximum length of the @bps_max burst
325 # period, in seconds. (Since 2.6)
327 # @bps_rd_max_length: maximum length of the @bps_rd_max
328 # burst period, in seconds. (Since 2.6)
330 # @bps_wr_max_length: maximum length of the @bps_wr_max
331 # burst period, in seconds. (Since 2.6)
333 # @iops_max_length: maximum length of the @iops burst
334 # period, in seconds. (Since 2.6)
336 # @iops_rd_max_length: maximum length of the @iops_rd_max
337 # burst period, in seconds. (Since 2.6)
339 # @iops_wr_max_length: maximum length of the @iops_wr_max
340 # burst period, in seconds. (Since 2.6)
342 # @iops_size: an I/O size in bytes (Since 1.7)
344 # @group: throttle group name (Since 2.4)
346 # @cache: the cache mode used for the block device (since: 2.3)
348 # @write_threshold: configured write threshold for the device.
349 # 0 if disabled. (Since 2.3)
354 { 'struct': 'BlockDeviceInfo',
355 'data': { 'file': 'str', '*node-name': 'str', 'ro': 'bool', 'drv': 'str',
356 '*backing_file': 'str', 'backing_file_depth': 'int',
357 'encrypted': 'bool', 'encryption_key_missing': 'bool',
358 'detect_zeroes': 'BlockdevDetectZeroesOptions',
359 'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int',
360 'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
361 'image': 'ImageInfo',
362 '*bps_max': 'int', '*bps_rd_max': 'int',
363 '*bps_wr_max': 'int', '*iops_max': 'int',
364 '*iops_rd_max': 'int', '*iops_wr_max': 'int',
365 '*bps_max_length': 'int', '*bps_rd_max_length': 'int',
366 '*bps_wr_max_length': 'int', '*iops_max_length': 'int',
367 '*iops_rd_max_length': 'int', '*iops_wr_max_length': 'int',
368 '*iops_size': 'int', '*group': 'str', 'cache': 'BlockdevCacheInfo',
369 'write_threshold': 'int' } }
372 # @BlockDeviceIoStatus:
374 # An enumeration of block device I/O status.
376 # @ok: The last I/O operation has succeeded
378 # @failed: The last I/O operation has failed
380 # @nospace: The last I/O operation has failed due to a no-space condition
384 { 'enum': 'BlockDeviceIoStatus', 'data': [ 'ok', 'failed', 'nospace' ] }
387 # @BlockDeviceMapEntry:
389 # Entry in the metadata map of the device (returned by "qemu-img map")
391 # @start: Offset in the image of the first byte described by this entry
394 # @length: Length of the range described by this entry (in bytes)
396 # @depth: Number of layers (0 = top image, 1 = top image's backing file, etc.)
397 # before reaching one for which the range is allocated. The value is
398 # in the range 0 to the depth of the image chain - 1.
400 # @zero: the sectors in this range read as zeros
402 # @data: reading the image will actually read data from a file (in particular,
403 # if @offset is present this means that the sectors are not simply
404 # preallocated, but contain actual data in raw format)
406 # @offset: if present, the image file stores the data for this range in
407 # raw format at the given offset.
411 { 'struct': 'BlockDeviceMapEntry',
412 'data': { 'start': 'int', 'length': 'int', 'depth': 'int', 'zero': 'bool',
413 'data': 'bool', '*offset': 'int' } }
416 # @DirtyBitmapStatus:
418 # An enumeration of possible states that a dirty bitmap can report to the user.
420 # @frozen: The bitmap is currently in-use by a backup operation or block job,
423 # @disabled: The bitmap is currently in-use by an internal operation and is
424 # read-only. It can still be deleted.
426 # @active: The bitmap is actively monitoring for new writes, and can be cleared,
427 # deleted, or used for backup operations.
431 { 'enum': 'DirtyBitmapStatus',
432 'data': ['active', 'disabled', 'frozen'] }
437 # Block dirty bitmap information.
439 # @name: the name of the dirty bitmap (Since 2.4)
441 # @count: number of dirty bytes according to the dirty bitmap
443 # @granularity: granularity of the dirty bitmap in bytes (since 1.4)
445 # @status: current status of the dirty bitmap (since 2.4)
449 { 'struct': 'BlockDirtyInfo',
450 'data': {'*name': 'str', 'count': 'int', 'granularity': 'uint32',
451 'status': 'DirtyBitmapStatus'} }
456 # Block device information. This structure describes a virtual device and
457 # the backing device associated with it.
459 # @device: The device name associated with the virtual device.
461 # @qdev: The qdev ID, or if no ID is assigned, the QOM path of the block
462 # device. (since 2.10)
464 # @type: This field is returned only for compatibility reasons, it should
465 # not be used (always returns 'unknown')
467 # @removable: True if the device supports removable media.
469 # @locked: True if the guest has locked this device from having its media
472 # @tray_open: True if the device's tray is open
473 # (only present if it has a tray)
475 # @dirty-bitmaps: dirty bitmaps information (only present if the
476 # driver has one or more dirty bitmaps) (Since 2.0)
478 # @io-status: @BlockDeviceIoStatus. Only present if the device
479 # supports it and the VM is configured to stop on errors
480 # (supported device models: virtio-blk, IDE, SCSI except
483 # @inserted: @BlockDeviceInfo describing the device if media is
488 { 'struct': 'BlockInfo',
489 'data': {'device': 'str', '*qdev': 'str', 'type': 'str', 'removable': 'bool',
490 'locked': 'bool', '*inserted': 'BlockDeviceInfo',
491 '*tray_open': 'bool', '*io-status': 'BlockDeviceIoStatus',
492 '*dirty-bitmaps': ['BlockDirtyInfo'] } }
497 # Image file size calculation information. This structure describes the size
498 # requirements for creating a new image file.
500 # The size requirements depend on the new image file format. File size always
501 # equals virtual disk size for the 'raw' format, even for sparse POSIX files.
502 # Compact formats such as 'qcow2' represent unallocated and zero regions
503 # efficiently so file size may be smaller than virtual disk size.
505 # The values are upper bounds that are guaranteed to fit the new image file.
506 # Subsequent modification, such as internal snapshot or bitmap creation, may
507 # require additional space and is not covered here.
509 # @required: Size required for a new image file, in bytes.
511 # @fully-allocated: Image file size, in bytes, once data has been written
516 { 'struct': 'BlockMeasureInfo',
517 'data': {'required': 'int', 'fully-allocated': 'int'} }
522 # Get a list of BlockInfo for all virtual block devices.
524 # Returns: a list of @BlockInfo describing each virtual block device. Filter
525 # nodes that were created implicitly are skipped over.
531 # -> { "execute": "query-block" }
536 # "device":"ide0-hd0",
543 # "file":"disks/test.qcow2",
544 # "backing_file_depth":1,
551 # "bps_max": 8000000,
558 # "detect_zeroes": "on",
559 # "write_threshold": 0,
561 # "filename":"disks/test.qcow2",
563 # "virtual-size":2048000,
564 # "backing_file":"base.qcow2",
565 # "full-backing-filename":"disks/base.qcow2",
566 # "backing-filename-format":"qcow2",
570 # "name": "snapshot1",
571 # "vm-state-size": 0,
572 # "date-sec": 10000200,
574 # "vm-clock-sec": 206,
575 # "vm-clock-nsec": 30
579 # "filename":"disks/base.qcow2",
581 # "virtual-size":2048000
585 # "qdev": "ide_disk",
590 # "device":"ide1-cd0",
593 # "qdev": "/machine/unattached/device[23]",
594 # "tray_open": false,
598 # "device":"floppy0",
601 # "qdev": "/machine/unattached/device[20]",
614 { 'command': 'query-block', 'returns': ['BlockInfo'] }
618 # @BlockDeviceTimedStats:
620 # Statistics of a block device during a given interval of time.
622 # @interval_length: Interval used for calculating the statistics,
625 # @min_rd_latency_ns: Minimum latency of read operations in the
626 # defined interval, in nanoseconds.
628 # @min_wr_latency_ns: Minimum latency of write operations in the
629 # defined interval, in nanoseconds.
631 # @min_flush_latency_ns: Minimum latency of flush operations in the
632 # defined interval, in nanoseconds.
634 # @max_rd_latency_ns: Maximum latency of read operations in the
635 # defined interval, in nanoseconds.
637 # @max_wr_latency_ns: Maximum latency of write operations in the
638 # defined interval, in nanoseconds.
640 # @max_flush_latency_ns: Maximum latency of flush operations in the
641 # defined interval, in nanoseconds.
643 # @avg_rd_latency_ns: Average latency of read operations in the
644 # defined interval, in nanoseconds.
646 # @avg_wr_latency_ns: Average latency of write operations in the
647 # defined interval, in nanoseconds.
649 # @avg_flush_latency_ns: Average latency of flush operations in the
650 # defined interval, in nanoseconds.
652 # @avg_rd_queue_depth: Average number of pending read operations
653 # in the defined interval.
655 # @avg_wr_queue_depth: Average number of pending write operations
656 # in the defined interval.
660 { 'struct': 'BlockDeviceTimedStats',
661 'data': { 'interval_length': 'int', 'min_rd_latency_ns': 'int',
662 'max_rd_latency_ns': 'int', 'avg_rd_latency_ns': 'int',
663 'min_wr_latency_ns': 'int', 'max_wr_latency_ns': 'int',
664 'avg_wr_latency_ns': 'int', 'min_flush_latency_ns': 'int',
665 'max_flush_latency_ns': 'int', 'avg_flush_latency_ns': 'int',
666 'avg_rd_queue_depth': 'number', 'avg_wr_queue_depth': 'number' } }
671 # Statistics of a virtual block device or a block backing device.
673 # @rd_bytes: The number of bytes read by the device.
675 # @wr_bytes: The number of bytes written by the device.
677 # @rd_operations: The number of read operations performed by the device.
679 # @wr_operations: The number of write operations performed by the device.
681 # @flush_operations: The number of cache flush operations performed by the
682 # device (since 0.15.0)
684 # @flush_total_time_ns: Total time spend on cache flushes in nano-seconds
687 # @wr_total_time_ns: Total time spend on writes in nano-seconds (since 0.15.0).
689 # @rd_total_time_ns: Total_time_spend on reads in nano-seconds (since 0.15.0).
691 # @wr_highest_offset: The offset after the greatest byte written to the
692 # device. The intended use of this information is for
693 # growable sparse files (like qcow2) that are used on top
694 # of a physical device.
696 # @rd_merged: Number of read requests that have been merged into another
697 # request (Since 2.3).
699 # @wr_merged: Number of write requests that have been merged into another
700 # request (Since 2.3).
702 # @idle_time_ns: Time since the last I/O operation, in
703 # nanoseconds. If the field is absent it means that
704 # there haven't been any operations yet (Since 2.5).
706 # @failed_rd_operations: The number of failed read operations
707 # performed by the device (Since 2.5)
709 # @failed_wr_operations: The number of failed write operations
710 # performed by the device (Since 2.5)
712 # @failed_flush_operations: The number of failed flush operations
713 # performed by the device (Since 2.5)
715 # @invalid_rd_operations: The number of invalid read operations
716 # performed by the device (Since 2.5)
718 # @invalid_wr_operations: The number of invalid write operations
719 # performed by the device (Since 2.5)
721 # @invalid_flush_operations: The number of invalid flush operations
722 # performed by the device (Since 2.5)
724 # @account_invalid: Whether invalid operations are included in the
725 # last access statistics (Since 2.5)
727 # @account_failed: Whether failed operations are included in the
728 # latency and last access statistics (Since 2.5)
730 # @timed_stats: Statistics specific to the set of previously defined
731 # intervals of time (Since 2.5)
735 { 'struct': 'BlockDeviceStats',
736 'data': {'rd_bytes': 'int', 'wr_bytes': 'int', 'rd_operations': 'int',
737 'wr_operations': 'int', 'flush_operations': 'int',
738 'flush_total_time_ns': 'int', 'wr_total_time_ns': 'int',
739 'rd_total_time_ns': 'int', 'wr_highest_offset': 'int',
740 'rd_merged': 'int', 'wr_merged': 'int', '*idle_time_ns': 'int',
741 'failed_rd_operations': 'int', 'failed_wr_operations': 'int',
742 'failed_flush_operations': 'int', 'invalid_rd_operations': 'int',
743 'invalid_wr_operations': 'int', 'invalid_flush_operations': 'int',
744 'account_invalid': 'bool', 'account_failed': 'bool',
745 'timed_stats': ['BlockDeviceTimedStats'] } }
750 # Statistics of a virtual block device or a block backing device.
752 # @device: If the stats are for a virtual block device, the name
753 # corresponding to the virtual block device.
755 # @node-name: The node name of the device. (Since 2.3)
757 # @stats: A @BlockDeviceStats for the device.
759 # @parent: This describes the file block device if it has one.
760 # Contains recursively the statistics of the underlying
761 # protocol (e.g. the host file for a qcow2 image). If there is
762 # no underlying protocol, this field is omitted
764 # @backing: This describes the backing block device if it has one.
769 { 'struct': 'BlockStats',
770 'data': {'*device': 'str', '*node-name': 'str',
771 'stats': 'BlockDeviceStats',
772 '*parent': 'BlockStats',
773 '*backing': 'BlockStats'} }
778 # Query the @BlockStats for all virtual block devices.
780 # @query-nodes: If true, the command will query all the block nodes
781 # that have a node name, in a list which will include "parent"
782 # information, but not "backing".
783 # If false or omitted, the behavior is as before - query all the
784 # device backends, recursively including their "parent" and
785 # "backing". Filter nodes that were created implicitly are
786 # skipped over in this mode. (Since 2.3)
788 # Returns: A list of @BlockStats for each virtual block devices.
794 # -> { "execute": "query-blockstats" }
798 # "device":"ide0-hd0",
801 # "wr_highest_offset":3686448128,
802 # "wr_bytes":9786368,
803 # "wr_operations":751,
804 # "rd_bytes":122567168,
805 # "rd_operations":36772
806 # "wr_total_times_ns":313253456
807 # "rd_total_times_ns":3465673657
808 # "flush_total_times_ns":49653
809 # "flush_operations":61,
812 # "idle_time_ns":2953431879,
813 # "account_invalid":true,
814 # "account_failed":false
818 # "wr_highest_offset":2821110784,
819 # "wr_bytes":9786368,
820 # "wr_operations":692,
821 # "rd_bytes":122739200,
822 # "rd_operations":36604
823 # "flush_operations":51,
824 # "wr_total_times_ns":313253456
825 # "rd_total_times_ns":3465673657
826 # "flush_total_times_ns":49653,
829 # "idle_time_ns":2953431879,
830 # "account_invalid":true,
831 # "account_failed":false
835 # "device":"ide1-cd0",
837 # "wr_highest_offset":0,
842 # "flush_operations":0,
843 # "wr_total_times_ns":0
844 # "rd_total_times_ns":0
845 # "flush_total_times_ns":0,
848 # "account_invalid":false,
849 # "account_failed":false
853 # "device":"floppy0",
855 # "wr_highest_offset":0,
860 # "flush_operations":0,
861 # "wr_total_times_ns":0
862 # "rd_total_times_ns":0
863 # "flush_total_times_ns":0,
866 # "account_invalid":false,
867 # "account_failed":false
873 # "wr_highest_offset":0,
878 # "flush_operations":0,
879 # "wr_total_times_ns":0
880 # "rd_total_times_ns":0
881 # "flush_total_times_ns":0,
884 # "account_invalid":false,
885 # "account_failed":false
892 { 'command': 'query-blockstats',
893 'data': { '*query-nodes': 'bool' },
894 'returns': ['BlockStats'] }
899 # An enumeration of possible behaviors for errors on I/O operations.
900 # The exact meaning depends on whether the I/O was initiated by a guest
903 # @report: for guest operations, report the error to the guest;
904 # for jobs, cancel the job
906 # @ignore: ignore the error, only report a QMP event (BLOCK_IO_ERROR
907 # or BLOCK_JOB_ERROR)
909 # @enospc: same as @stop on ENOSPC, same as @report otherwise.
911 # @stop: for guest operations, stop the virtual machine;
912 # for jobs, pause the job
914 # @auto: inherit the error handling policy of the backend (since: 2.7)
918 { 'enum': 'BlockdevOnError',
919 'data': ['report', 'ignore', 'enospc', 'stop', 'auto'] }
924 # An enumeration of possible behaviors for the initial synchronization
925 # phase of storage mirroring.
927 # @top: copies data in the topmost image to the destination
929 # @full: copies data from all images to the destination
931 # @none: only copy data written from now on
933 # @incremental: only copy data described by the dirty bitmap. Since: 2.4
937 { 'enum': 'MirrorSyncMode',
938 'data': ['top', 'full', 'none', 'incremental'] }
943 # Type of a block job.
945 # @commit: block commit job type, see "block-commit"
947 # @stream: block stream job type, see "block-stream"
949 # @mirror: drive mirror job type, see "drive-mirror"
951 # @backup: drive backup job type, see "drive-backup"
955 { 'enum': 'BlockJobType',
956 'data': ['commit', 'stream', 'mirror', 'backup'] }
961 # Information about a long-running block device operation.
963 # @type: the job type ('stream' for image streaming)
965 # @device: The job identifier. Originally the device name but other
966 # values are allowed since QEMU 2.7
968 # @len: the maximum progress value
970 # @busy: false if the job is known to be in a quiescent state, with
971 # no pending I/O. Since 1.3.
973 # @paused: whether the job is paused or, if @busy is true, will
974 # pause itself as soon as possible. Since 1.3.
976 # @offset: the current progress value
978 # @speed: the rate limit, bytes per second
980 # @io-status: the status of the job (since 1.3)
982 # @ready: true if the job may be completed (since 2.2)
986 { 'struct': 'BlockJobInfo',
987 'data': {'type': 'str', 'device': 'str', 'len': 'int',
988 'offset': 'int', 'busy': 'bool', 'paused': 'bool', 'speed': 'int',
989 'io-status': 'BlockDeviceIoStatus', 'ready': 'bool'} }
994 # Return information about long-running block device operations.
996 # Returns: a list of @BlockJobInfo for each active block job
1000 { 'command': 'query-block-jobs', 'returns': ['BlockJobInfo'] }
1005 # This command sets the password of a block device that has not been open
1006 # with a password and requires one.
1008 # This command is now obsolete and will always return an error since 2.10
1011 { 'command': 'block_passwd', 'data': {'*device': 'str',
1012 '*node-name': 'str', 'password': 'str'} }
1017 # Resize a block image while a guest is running.
1019 # Either @device or @node-name must be set but not both.
1021 # @device: the name of the device to get the image resized
1023 # @node-name: graph node name to get the image resized (Since 2.0)
1025 # @size: new image size in bytes
1027 # Returns: nothing on success
1028 # If @device is not a valid block device, DeviceNotFound
1034 # -> { "execute": "block_resize",
1035 # "arguments": { "device": "scratch", "size": 1073741824 } }
1036 # <- { "return": {} }
1039 { 'command': 'block_resize', 'data': { '*device': 'str',
1040 '*node-name': 'str',
1046 # An enumeration that tells QEMU how to set the backing file path in
1049 # @existing: QEMU should look for an existing image file.
1051 # @absolute-paths: QEMU should create a new image with absolute paths
1052 # for the backing file. If there is no backing file available, the new
1053 # image will not be backed either.
1057 { 'enum': 'NewImageMode',
1058 'data': [ 'existing', 'absolute-paths' ] }
1061 # @BlockdevSnapshotSync:
1063 # Either @device or @node-name must be set but not both.
1065 # @device: the name of the device to generate the snapshot from.
1067 # @node-name: graph node name to generate the snapshot from (Since 2.0)
1069 # @snapshot-file: the target of the new image. If the file exists, or
1070 # if it is a device, the snapshot will be created in the existing
1071 # file/device. Otherwise, a new file will be created.
1073 # @snapshot-node-name: the graph node name of the new image (Since 2.0)
1075 # @format: the format of the snapshot image, default is 'qcow2'.
1077 # @mode: whether and how QEMU should create a new image, default is
1080 { 'struct': 'BlockdevSnapshotSync',
1081 'data': { '*device': 'str', '*node-name': 'str',
1082 'snapshot-file': 'str', '*snapshot-node-name': 'str',
1083 '*format': 'str', '*mode': 'NewImageMode' } }
1086 # @BlockdevSnapshot:
1088 # @node: device or node name that will have a snapshot created.
1090 # @overlay: reference to the existing block device that will become
1091 # the overlay of @node, as part of creating the snapshot.
1092 # It must not have a current backing file (this can be
1093 # achieved by passing "backing": "" to blockdev-add).
1097 { 'struct': 'BlockdevSnapshot',
1098 'data': { 'node': 'str', 'overlay': 'str' } }
1103 # @job-id: identifier for the newly-created block job. If
1104 # omitted, the device name will be used. (Since 2.7)
1106 # @device: the device name or node-name of a root node which should be copied.
1108 # @target: the target of the new image. If the file exists, or if it
1109 # is a device, the existing file/device will be used as the new
1110 # destination. If it does not exist, a new file will be created.
1112 # @format: the format of the new destination, default is to
1113 # probe if @mode is 'existing', else the format of the source
1115 # @sync: what parts of the disk image should be copied to the destination
1116 # (all the disk, only the sectors allocated in the topmost image, from a
1117 # dirty bitmap, or only new I/O).
1119 # @mode: whether and how QEMU should create a new image, default is
1122 # @speed: the maximum speed, in bytes per second
1124 # @bitmap: the name of dirty bitmap if sync is "incremental".
1125 # Must be present if sync is "incremental", must NOT be present
1126 # otherwise. (Since 2.4)
1128 # @compress: true to compress data, if the target format supports it.
1129 # (default: false) (since 2.8)
1131 # @on-source-error: the action to take on an error on the source,
1132 # default 'report'. 'stop' and 'enospc' can only be used
1133 # if the block device supports io-status (see BlockInfo).
1135 # @on-target-error: the action to take on an error on the target,
1136 # default 'report' (no limitations, since this applies to
1137 # a different block device than @device).
1139 # Note: @on-source-error and @on-target-error only affect background
1140 # I/O. If an error occurs during a guest write request, the device's
1141 # rerror/werror actions will be used.
1145 { 'struct': 'DriveBackup',
1146 'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
1147 '*format': 'str', 'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
1148 '*speed': 'int', '*bitmap': 'str', '*compress': 'bool',
1149 '*on-source-error': 'BlockdevOnError',
1150 '*on-target-error': 'BlockdevOnError' } }
1155 # @job-id: identifier for the newly-created block job. If
1156 # omitted, the device name will be used. (Since 2.7)
1158 # @device: the device name or node-name of a root node which should be copied.
1160 # @target: the device name or node-name of the backup target node.
1162 # @sync: what parts of the disk image should be copied to the destination
1163 # (all the disk, only the sectors allocated in the topmost image, or
1166 # @speed: the maximum speed, in bytes per second. The default is 0,
1169 # @compress: true to compress data, if the target format supports it.
1170 # (default: false) (since 2.8)
1172 # @on-source-error: the action to take on an error on the source,
1173 # default 'report'. 'stop' and 'enospc' can only be used
1174 # if the block device supports io-status (see BlockInfo).
1176 # @on-target-error: the action to take on an error on the target,
1177 # default 'report' (no limitations, since this applies to
1178 # a different block device than @device).
1180 # Note: @on-source-error and @on-target-error only affect background
1181 # I/O. If an error occurs during a guest write request, the device's
1182 # rerror/werror actions will be used.
1186 { 'struct': 'BlockdevBackup',
1187 'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
1188 'sync': 'MirrorSyncMode',
1190 '*compress': 'bool',
1191 '*on-source-error': 'BlockdevOnError',
1192 '*on-target-error': 'BlockdevOnError' } }
1195 # @blockdev-snapshot-sync:
1197 # Generates a synchronous snapshot of a block device.
1199 # For the arguments, see the documentation of BlockdevSnapshotSync.
1201 # Returns: nothing on success
1202 # If @device is not a valid block device, DeviceNotFound
1208 # -> { "execute": "blockdev-snapshot-sync",
1209 # "arguments": { "device": "ide-hd0",
1211 # "/some/place/my-image",
1212 # "format": "qcow2" } }
1213 # <- { "return": {} }
1216 { 'command': 'blockdev-snapshot-sync',
1217 'data': 'BlockdevSnapshotSync' }
1221 # @blockdev-snapshot:
1223 # Generates a snapshot of a block device.
1225 # Create a snapshot, by installing 'node' as the backing image of
1226 # 'overlay'. Additionally, if 'node' is associated with a block
1227 # device, the block device changes to using 'overlay' as its new active
1230 # For the arguments, see the documentation of BlockdevSnapshot.
1236 # -> { "execute": "blockdev-add",
1237 # "arguments": { "driver": "qcow2",
1238 # "node-name": "node1534",
1239 # "file": { "driver": "file",
1240 # "filename": "hd1.qcow2" },
1243 # <- { "return": {} }
1245 # -> { "execute": "blockdev-snapshot",
1246 # "arguments": { "node": "ide-hd0",
1247 # "overlay": "node1534" } }
1248 # <- { "return": {} }
1251 { 'command': 'blockdev-snapshot',
1252 'data': 'BlockdevSnapshot' }
1255 # @change-backing-file:
1257 # Change the backing file in the image file metadata. This does not
1258 # cause QEMU to reopen the image file to reparse the backing filename
1259 # (it may, however, perform a reopen to change permissions from
1260 # r/o -> r/w -> r/o, if needed). The new backing file string is written
1261 # into the image file metadata, and the QEMU internal strings are
1264 # @image-node-name: The name of the block driver state node of the
1265 # image to modify. The "device" argument is used
1266 # to verify "image-node-name" is in the chain
1267 # described by "device".
1269 # @device: The device name or node-name of the root node that owns
1272 # @backing-file: The string to write as the backing file. This
1273 # string is not validated, so care should be taken
1274 # when specifying the string or the image chain may
1275 # not be able to be reopened again.
1277 # Returns: Nothing on success
1279 # If "device" does not exist or cannot be determined, DeviceNotFound
1283 { 'command': 'change-backing-file',
1284 'data': { 'device': 'str', 'image-node-name': 'str',
1285 'backing-file': 'str' } }
1290 # Live commit of data from overlay image nodes into backing nodes - i.e.,
1291 # writes data between 'top' and 'base' into 'base'.
1293 # @job-id: identifier for the newly-created block job. If
1294 # omitted, the device name will be used. (Since 2.7)
1296 # @device: the device name or node-name of a root node
1298 # @base: The file name of the backing image to write data into.
1299 # If not specified, this is the deepest backing image.
1301 # @top: The file name of the backing image within the image chain,
1302 # which contains the topmost data to be committed down. If
1303 # not specified, this is the active layer.
1305 # @backing-file: The backing file string to write into the overlay
1306 # image of 'top'. If 'top' is the active layer,
1307 # specifying a backing file string is an error. This
1308 # filename is not validated.
1310 # If a pathname string is such that it cannot be
1311 # resolved by QEMU, that means that subsequent QMP or
1312 # HMP commands must use node-names for the image in
1313 # question, as filename lookup methods will fail.
1315 # If not specified, QEMU will automatically determine
1316 # the backing file string to use, or error out if
1317 # there is no obvious choice. Care should be taken
1318 # when specifying the string, to specify a valid
1319 # filename or protocol.
1322 # If top == base, that is an error.
1323 # If top == active, the job will not be completed by itself,
1324 # user needs to complete the job with the block-job-complete
1325 # command after getting the ready event. (Since 2.0)
1327 # If the base image is smaller than top, then the base image
1328 # will be resized to be the same size as top. If top is
1329 # smaller than the base image, the base will not be
1330 # truncated. If you want the base image size to match the
1331 # size of the smaller top, you can safely truncate it
1332 # yourself once the commit operation successfully completes.
1334 # @speed: the maximum speed, in bytes per second
1336 # @filter-node-name: the node name that should be assigned to the
1337 # filter driver that the commit job inserts into the graph
1338 # above @top. If this option is not given, a node name is
1339 # autogenerated. (Since: 2.9)
1341 # Returns: Nothing on success
1342 # If commit or stream is already active on this device, DeviceInUse
1343 # If @device does not exist, DeviceNotFound
1344 # If image commit is not supported by this device, NotSupported
1345 # If @base or @top is invalid, a generic error is returned
1346 # If @speed is invalid, InvalidParameter
1352 # -> { "execute": "block-commit",
1353 # "arguments": { "device": "virtio0",
1354 # "top": "/tmp/snap1.qcow2" } }
1355 # <- { "return": {} }
1358 { 'command': 'block-commit',
1359 'data': { '*job-id': 'str', 'device': 'str', '*base': 'str', '*top': 'str',
1360 '*backing-file': 'str', '*speed': 'int',
1361 '*filter-node-name': 'str' } }
1366 # Start a point-in-time copy of a block device to a new destination. The
1367 # status of ongoing drive-backup operations can be checked with
1368 # query-block-jobs where the BlockJobInfo.type field has the value 'backup'.
1369 # The operation can be stopped before it has completed using the
1370 # block-job-cancel command.
1372 # Returns: nothing on success
1373 # If @device is not a valid block device, GenericError
1379 # -> { "execute": "drive-backup",
1380 # "arguments": { "device": "drive0",
1382 # "target": "backup.img" } }
1383 # <- { "return": {} }
1386 { 'command': 'drive-backup', 'boxed': true,
1387 'data': 'DriveBackup' }
1392 # Start a point-in-time copy of a block device to a new destination. The
1393 # status of ongoing blockdev-backup operations can be checked with
1394 # query-block-jobs where the BlockJobInfo.type field has the value 'backup'.
1395 # The operation can be stopped before it has completed using the
1396 # block-job-cancel command.
1398 # Returns: nothing on success
1399 # If @device is not a valid block device, DeviceNotFound
1404 # -> { "execute": "blockdev-backup",
1405 # "arguments": { "device": "src-id",
1407 # "target": "tgt-id" } }
1408 # <- { "return": {} }
1411 { 'command': 'blockdev-backup', 'boxed': true,
1412 'data': 'BlockdevBackup' }
1416 # @query-named-block-nodes:
1418 # Get the named block driver list
1420 # Returns: the list of BlockDeviceInfo
1426 # -> { "execute": "query-named-block-nodes" }
1427 # <- { "return": [ { "ro":false,
1429 # "encrypted":false,
1430 # "file":"disks/test.qcow2",
1431 # "node-name": "my-node",
1432 # "backing_file_depth":1,
1439 # "bps_max": 8000000,
1446 # "write_threshold": 0,
1448 # "filename":"disks/test.qcow2",
1450 # "virtual-size":2048000,
1451 # "backing_file":"base.qcow2",
1452 # "full-backing-filename":"disks/base.qcow2",
1453 # "backing-filename-format":"qcow2",
1457 # "name": "snapshot1",
1458 # "vm-state-size": 0,
1459 # "date-sec": 10000200,
1461 # "vm-clock-sec": 206,
1462 # "vm-clock-nsec": 30
1466 # "filename":"disks/base.qcow2",
1468 # "virtual-size":2048000
1473 { 'command': 'query-named-block-nodes', 'returns': [ 'BlockDeviceInfo' ] }
1478 # Start mirroring a block device's writes to a new destination. target
1479 # specifies the target of the new image. If the file exists, or if it
1480 # is a device, it will be used as the new destination for writes. If
1481 # it does not exist, a new file will be created. format specifies the
1482 # format of the mirror image, default is to probe if mode='existing',
1483 # else the format of the source.
1485 # Returns: nothing on success
1486 # If @device is not a valid block device, GenericError
1492 # -> { "execute": "drive-mirror",
1493 # "arguments": { "device": "ide-hd0",
1494 # "target": "/some/place/my-image",
1496 # "format": "qcow2" } }
1497 # <- { "return": {} }
1500 { 'command': 'drive-mirror', 'boxed': true,
1501 'data': 'DriveMirror' }
1506 # A set of parameters describing drive mirror setup.
1508 # @job-id: identifier for the newly-created block job. If
1509 # omitted, the device name will be used. (Since 2.7)
1511 # @device: the device name or node-name of a root node whose writes should be
1514 # @target: the target of the new image. If the file exists, or if it
1515 # is a device, the existing file/device will be used as the new
1516 # destination. If it does not exist, a new file will be created.
1518 # @format: the format of the new destination, default is to
1519 # probe if @mode is 'existing', else the format of the source
1521 # @node-name: the new block driver state node name in the graph
1524 # @replaces: with sync=full graph node name to be replaced by the new
1525 # image when a whole image copy is done. This can be used to repair
1526 # broken Quorum files. (Since 2.1)
1528 # @mode: whether and how QEMU should create a new image, default is
1531 # @speed: the maximum speed, in bytes per second
1533 # @sync: what parts of the disk image should be copied to the destination
1534 # (all the disk, only the sectors allocated in the topmost image, or
1537 # @granularity: granularity of the dirty bitmap, default is 64K
1538 # if the image format doesn't have clusters, 4K if the clusters
1539 # are smaller than that, else the cluster size. Must be a
1540 # power of 2 between 512 and 64M (since 1.4).
1542 # @buf-size: maximum amount of data in flight from source to
1543 # target (since 1.4).
1545 # @on-source-error: the action to take on an error on the source,
1546 # default 'report'. 'stop' and 'enospc' can only be used
1547 # if the block device supports io-status (see BlockInfo).
1549 # @on-target-error: the action to take on an error on the target,
1550 # default 'report' (no limitations, since this applies to
1551 # a different block device than @device).
1552 # @unmap: Whether to try to unmap target sectors where source has
1553 # only zero. If true, and target unallocated sectors will read as zero,
1554 # target image sectors will be unmapped; otherwise, zeroes will be
1555 # written. Both will result in identical contents.
1556 # Default is true. (Since 2.4)
1560 { 'struct': 'DriveMirror',
1561 'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
1562 '*format': 'str', '*node-name': 'str', '*replaces': 'str',
1563 'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
1564 '*speed': 'int', '*granularity': 'uint32',
1565 '*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
1566 '*on-target-error': 'BlockdevOnError',
1567 '*unmap': 'bool' } }
1570 # @BlockDirtyBitmap:
1572 # @node: name of device/node which the bitmap is tracking
1574 # @name: name of the dirty bitmap
1578 { 'struct': 'BlockDirtyBitmap',
1579 'data': { 'node': 'str', 'name': 'str' } }
1582 # @BlockDirtyBitmapAdd:
1584 # @node: name of device/node which the bitmap is tracking
1586 # @name: name of the dirty bitmap
1588 # @granularity: the bitmap granularity, default is 64k for
1589 # block-dirty-bitmap-add
1591 # @persistent: the bitmap is persistent, i.e. it will be saved to the
1592 # corresponding block device image file on its close. For now only
1593 # Qcow2 disks support persistent bitmaps. Default is false for
1594 # block-dirty-bitmap-add. (Since: 2.10)
1596 # @autoload: the bitmap will be automatically loaded when the image it is stored
1597 # in is opened. This flag may only be specified for persistent
1598 # bitmaps. Default is false for block-dirty-bitmap-add. (Since: 2.10)
1602 { 'struct': 'BlockDirtyBitmapAdd',
1603 'data': { 'node': 'str', 'name': 'str', '*granularity': 'uint32',
1604 '*persistent': 'bool', '*autoload': 'bool' } }
1607 # @block-dirty-bitmap-add:
1609 # Create a dirty bitmap with a name on the node, and start tracking the writes.
1611 # Returns: nothing on success
1612 # If @node is not a valid block device or node, DeviceNotFound
1613 # If @name is already taken, GenericError with an explanation
1619 # -> { "execute": "block-dirty-bitmap-add",
1620 # "arguments": { "node": "drive0", "name": "bitmap0" } }
1621 # <- { "return": {} }
1624 { 'command': 'block-dirty-bitmap-add',
1625 'data': 'BlockDirtyBitmapAdd' }
1628 # @block-dirty-bitmap-remove:
1630 # Stop write tracking and remove the dirty bitmap that was created
1631 # with block-dirty-bitmap-add. If the bitmap is persistent, remove it from its
1634 # Returns: nothing on success
1635 # If @node is not a valid block device or node, DeviceNotFound
1636 # If @name is not found, GenericError with an explanation
1637 # if @name is frozen by an operation, GenericError
1643 # -> { "execute": "block-dirty-bitmap-remove",
1644 # "arguments": { "node": "drive0", "name": "bitmap0" } }
1645 # <- { "return": {} }
1648 { 'command': 'block-dirty-bitmap-remove',
1649 'data': 'BlockDirtyBitmap' }
1652 # @block-dirty-bitmap-clear:
1654 # Clear (reset) a dirty bitmap on the device, so that an incremental
1655 # backup from this point in time forward will only backup clusters
1656 # modified after this clear operation.
1658 # Returns: nothing on success
1659 # If @node is not a valid block device, DeviceNotFound
1660 # If @name is not found, GenericError with an explanation
1666 # -> { "execute": "block-dirty-bitmap-clear",
1667 # "arguments": { "node": "drive0", "name": "bitmap0" } }
1668 # <- { "return": {} }
1671 { 'command': 'block-dirty-bitmap-clear',
1672 'data': 'BlockDirtyBitmap' }
1675 # @BlockDirtyBitmapSha256:
1677 # SHA256 hash of dirty bitmap data
1679 # @sha256: ASCII representation of SHA256 bitmap hash
1683 { 'struct': 'BlockDirtyBitmapSha256',
1684 'data': {'sha256': 'str'} }
1687 # @x-debug-block-dirty-bitmap-sha256:
1691 # Returns: BlockDirtyBitmapSha256 on success
1692 # If @node is not a valid block device, DeviceNotFound
1693 # If @name is not found or if hashing has failed, GenericError with an
1698 { 'command': 'x-debug-block-dirty-bitmap-sha256',
1699 'data': 'BlockDirtyBitmap', 'returns': 'BlockDirtyBitmapSha256' }
1704 # Start mirroring a block device's writes to a new destination.
1706 # @job-id: identifier for the newly-created block job. If
1707 # omitted, the device name will be used. (Since 2.7)
1709 # @device: The device name or node-name of a root node whose writes should be
1712 # @target: the id or node-name of the block device to mirror to. This mustn't be
1713 # attached to guest.
1715 # @replaces: with sync=full graph node name to be replaced by the new
1716 # image when a whole image copy is done. This can be used to repair
1717 # broken Quorum files.
1719 # @speed: the maximum speed, in bytes per second
1721 # @sync: what parts of the disk image should be copied to the destination
1722 # (all the disk, only the sectors allocated in the topmost image, or
1725 # @granularity: granularity of the dirty bitmap, default is 64K
1726 # if the image format doesn't have clusters, 4K if the clusters
1727 # are smaller than that, else the cluster size. Must be a
1728 # power of 2 between 512 and 64M
1730 # @buf-size: maximum amount of data in flight from source to
1733 # @on-source-error: the action to take on an error on the source,
1734 # default 'report'. 'stop' and 'enospc' can only be used
1735 # if the block device supports io-status (see BlockInfo).
1737 # @on-target-error: the action to take on an error on the target,
1738 # default 'report' (no limitations, since this applies to
1739 # a different block device than @device).
1741 # @filter-node-name: the node name that should be assigned to the
1742 # filter driver that the mirror job inserts into the graph
1743 # above @device. If this option is not given, a node name is
1744 # autogenerated. (Since: 2.9)
1746 # Returns: nothing on success.
1752 # -> { "execute": "blockdev-mirror",
1753 # "arguments": { "device": "ide-hd0",
1754 # "target": "target0",
1755 # "sync": "full" } }
1756 # <- { "return": {} }
1759 { 'command': 'blockdev-mirror',
1760 'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
1762 'sync': 'MirrorSyncMode',
1763 '*speed': 'int', '*granularity': 'uint32',
1764 '*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
1765 '*on-target-error': 'BlockdevOnError',
1766 '*filter-node-name': 'str' } }
1769 # @block_set_io_throttle:
1771 # Change I/O throttle limits for a block drive.
1773 # Since QEMU 2.4, each device with I/O limits is member of a throttle
1776 # If two or more devices are members of the same group, the limits
1777 # will apply to the combined I/O of the whole group in a round-robin
1778 # fashion. Therefore, setting new I/O limits to a device will affect
1781 # The name of the group can be specified using the 'group' parameter.
1782 # If the parameter is unset, it is assumed to be the current group of
1783 # that device. If it's not in any group yet, the name of the device
1784 # will be used as the name for its group.
1786 # The 'group' parameter can also be used to move a device to a
1787 # different group. In this case the limits specified in the parameters
1788 # will be applied to the new group only.
1790 # I/O limits can be disabled by setting all of them to 0. In this case
1791 # the device will be removed from its group and the rest of its
1792 # members will not be affected. The 'group' parameter is ignored.
1794 # Returns: Nothing on success
1795 # If @device is not a valid block device, DeviceNotFound
1801 # -> { "execute": "block_set_io_throttle",
1802 # "arguments": { "id": "ide0-1-0",
1809 # "bps_max": 8000000,
1815 # "bps_max_length": 60,
1816 # "iops_size": 0 } }
1817 # <- { "return": {} }
1819 { 'command': 'block_set_io_throttle', 'boxed': true,
1820 'data': 'BlockIOThrottle' }
1825 # A set of parameters describing block throttling.
1827 # @device: Block device name (deprecated, use @id instead)
1829 # @id: The name or QOM path of the guest device (since: 2.8)
1831 # @bps: total throughput limit in bytes per second
1833 # @bps_rd: read throughput limit in bytes per second
1835 # @bps_wr: write throughput limit in bytes per second
1837 # @iops: total I/O operations per second
1839 # @iops_rd: read I/O operations per second
1841 # @iops_wr: write I/O operations per second
1843 # @bps_max: total throughput limit during bursts,
1844 # in bytes (Since 1.7)
1846 # @bps_rd_max: read throughput limit during bursts,
1847 # in bytes (Since 1.7)
1849 # @bps_wr_max: write throughput limit during bursts,
1850 # in bytes (Since 1.7)
1852 # @iops_max: total I/O operations per second during bursts,
1853 # in bytes (Since 1.7)
1855 # @iops_rd_max: read I/O operations per second during bursts,
1856 # in bytes (Since 1.7)
1858 # @iops_wr_max: write I/O operations per second during bursts,
1859 # in bytes (Since 1.7)
1861 # @bps_max_length: maximum length of the @bps_max burst
1862 # period, in seconds. It must only
1863 # be set if @bps_max is set as well.
1864 # Defaults to 1. (Since 2.6)
1866 # @bps_rd_max_length: maximum length of the @bps_rd_max
1867 # burst period, in seconds. It must only
1868 # be set if @bps_rd_max is set as well.
1869 # Defaults to 1. (Since 2.6)
1871 # @bps_wr_max_length: maximum length of the @bps_wr_max
1872 # burst period, in seconds. It must only
1873 # be set if @bps_wr_max is set as well.
1874 # Defaults to 1. (Since 2.6)
1876 # @iops_max_length: maximum length of the @iops burst
1877 # period, in seconds. It must only
1878 # be set if @iops_max is set as well.
1879 # Defaults to 1. (Since 2.6)
1881 # @iops_rd_max_length: maximum length of the @iops_rd_max
1882 # burst period, in seconds. It must only
1883 # be set if @iops_rd_max is set as well.
1884 # Defaults to 1. (Since 2.6)
1886 # @iops_wr_max_length: maximum length of the @iops_wr_max
1887 # burst period, in seconds. It must only
1888 # be set if @iops_wr_max is set as well.
1889 # Defaults to 1. (Since 2.6)
1891 # @iops_size: an I/O size in bytes (Since 1.7)
1893 # @group: throttle group name (Since 2.4)
1897 { 'struct': 'BlockIOThrottle',
1898 'data': { '*device': 'str', '*id': 'str', 'bps': 'int', 'bps_rd': 'int',
1899 'bps_wr': 'int', 'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
1900 '*bps_max': 'int', '*bps_rd_max': 'int',
1901 '*bps_wr_max': 'int', '*iops_max': 'int',
1902 '*iops_rd_max': 'int', '*iops_wr_max': 'int',
1903 '*bps_max_length': 'int', '*bps_rd_max_length': 'int',
1904 '*bps_wr_max_length': 'int', '*iops_max_length': 'int',
1905 '*iops_rd_max_length': 'int', '*iops_wr_max_length': 'int',
1906 '*iops_size': 'int', '*group': 'str' } }
1911 # Limit parameters for throttling.
1912 # Since some limit combinations are illegal, limits should always be set in one
1913 # transaction. All fields are optional. When setting limits, if a field is
1914 # missing the current value is not changed.
1916 # @iops-total: limit total I/O operations per second
1917 # @iops-total-max: I/O operations burst
1918 # @iops-total-max-length: length of the iops-total-max burst period, in seconds
1919 # It must only be set if @iops-total-max is set as well.
1920 # @iops-read: limit read operations per second
1921 # @iops-read-max: I/O operations read burst
1922 # @iops-read-max-length: length of the iops-read-max burst period, in seconds
1923 # It must only be set if @iops-read-max is set as well.
1924 # @iops-write: limit write operations per second
1925 # @iops-write-max: I/O operations write burst
1926 # @iops-write-max-length: length of the iops-write-max burst period, in seconds
1927 # It must only be set if @iops-write-max is set as well.
1928 # @bps-total: limit total bytes per second
1929 # @bps-total-max: total bytes burst
1930 # @bps-total-max-length: length of the bps-total-max burst period, in seconds.
1931 # It must only be set if @bps-total-max is set as well.
1932 # @bps-read: limit read bytes per second
1933 # @bps-read-max: total bytes read burst
1934 # @bps-read-max-length: length of the bps-read-max burst period, in seconds
1935 # It must only be set if @bps-read-max is set as well.
1936 # @bps-write: limit write bytes per second
1937 # @bps-write-max: total bytes write burst
1938 # @bps-write-max-length: length of the bps-write-max burst period, in seconds
1939 # It must only be set if @bps-write-max is set as well.
1940 # @iops-size: when limiting by iops max size of an I/O in bytes
1944 { 'struct': 'ThrottleLimits',
1945 'data': { '*iops-total' : 'int', '*iops-total-max' : 'int',
1946 '*iops-total-max-length' : 'int', '*iops-read' : 'int',
1947 '*iops-read-max' : 'int', '*iops-read-max-length' : 'int',
1948 '*iops-write' : 'int', '*iops-write-max' : 'int',
1949 '*iops-write-max-length' : 'int', '*bps-total' : 'int',
1950 '*bps-total-max' : 'int', '*bps-total-max-length' : 'int',
1951 '*bps-read' : 'int', '*bps-read-max' : 'int',
1952 '*bps-read-max-length' : 'int', '*bps-write' : 'int',
1953 '*bps-write-max' : 'int', '*bps-write-max-length' : 'int',
1954 '*iops-size' : 'int' } }
1959 # Copy data from a backing file into a block device.
1961 # The block streaming operation is performed in the background until the entire
1962 # backing file has been copied. This command returns immediately once streaming
1963 # has started. The status of ongoing block streaming operations can be checked
1964 # with query-block-jobs. The operation can be stopped before it has completed
1965 # using the block-job-cancel command.
1967 # The node that receives the data is called the top image, can be located in
1968 # any part of the chain (but always above the base image; see below) and can be
1969 # specified using its device or node name. Earlier qemu versions only allowed
1970 # 'device' to name the top level node; presence of the 'base-node' parameter
1971 # during introspection can be used as a witness of the enhanced semantics
1974 # If a base file is specified then sectors are not copied from that base file and
1975 # its backing chain. When streaming completes the image file will have the base
1976 # file as its backing file. This can be used to stream a subset of the backing
1977 # file chain instead of flattening the entire image.
1979 # On successful completion the image file is updated to drop the backing file
1980 # and the BLOCK_JOB_COMPLETED event is emitted.
1982 # @job-id: identifier for the newly-created block job. If
1983 # omitted, the device name will be used. (Since 2.7)
1985 # @device: the device or node name of the top image
1987 # @base: the common backing file name.
1988 # It cannot be set if @base-node is also set.
1990 # @base-node: the node name of the backing file.
1991 # It cannot be set if @base is also set. (Since 2.8)
1993 # @backing-file: The backing file string to write into the top
1994 # image. This filename is not validated.
1996 # If a pathname string is such that it cannot be
1997 # resolved by QEMU, that means that subsequent QMP or
1998 # HMP commands must use node-names for the image in
1999 # question, as filename lookup methods will fail.
2001 # If not specified, QEMU will automatically determine
2002 # the backing file string to use, or error out if there
2003 # is no obvious choice. Care should be taken when
2004 # specifying the string, to specify a valid filename or
2008 # @speed: the maximum speed, in bytes per second
2010 # @on-error: the action to take on an error (default report).
2011 # 'stop' and 'enospc' can only be used if the block device
2012 # supports io-status (see BlockInfo). Since 1.3.
2014 # Returns: Nothing on success. If @device does not exist, DeviceNotFound.
2020 # -> { "execute": "block-stream",
2021 # "arguments": { "device": "virtio0",
2022 # "base": "/tmp/master.qcow2" } }
2023 # <- { "return": {} }
2026 { 'command': 'block-stream',
2027 'data': { '*job-id': 'str', 'device': 'str', '*base': 'str',
2028 '*base-node': 'str', '*backing-file': 'str', '*speed': 'int',
2029 '*on-error': 'BlockdevOnError' } }
2032 # @block-job-set-speed:
2034 # Set maximum speed for a background block operation.
2036 # This command can only be issued when there is an active block job.
2038 # Throttling can be disabled by setting the speed to 0.
2040 # @device: The job identifier. This used to be a device name (hence
2041 # the name of the parameter), but since QEMU 2.7 it can have
2044 # @speed: the maximum speed, in bytes per second, or 0 for unlimited.
2047 # Returns: Nothing on success
2048 # If no background operation is active on this device, DeviceNotActive
2052 { 'command': 'block-job-set-speed',
2053 'data': { 'device': 'str', 'speed': 'int' } }
2056 # @block-job-cancel:
2058 # Stop an active background block operation.
2060 # This command returns immediately after marking the active background block
2061 # operation for cancellation. It is an error to call this command if no
2062 # operation is in progress.
2064 # The operation will cancel as soon as possible and then emit the
2065 # BLOCK_JOB_CANCELLED event. Before that happens the job is still visible when
2066 # enumerated using query-block-jobs.
2068 # For streaming, the image file retains its backing file unless the streaming
2069 # operation happens to complete just as it is being cancelled. A new streaming
2070 # operation can be started at a later time to finish copying all data from the
2073 # @device: The job identifier. This used to be a device name (hence
2074 # the name of the parameter), but since QEMU 2.7 it can have
2077 # @force: whether to allow cancellation of a paused job (default
2078 # false). Since 1.3.
2080 # Returns: Nothing on success
2081 # If no background operation is active on this device, DeviceNotActive
2085 { 'command': 'block-job-cancel', 'data': { 'device': 'str', '*force': 'bool' } }
2090 # Pause an active background block operation.
2092 # This command returns immediately after marking the active background block
2093 # operation for pausing. It is an error to call this command if no
2094 # operation is in progress. Pausing an already paused job has no cumulative
2095 # effect; a single block-job-resume command will resume the job.
2097 # The operation will pause as soon as possible. No event is emitted when
2098 # the operation is actually paused. Cancelling a paused job automatically
2101 # @device: The job identifier. This used to be a device name (hence
2102 # the name of the parameter), but since QEMU 2.7 it can have
2105 # Returns: Nothing on success
2106 # If no background operation is active on this device, DeviceNotActive
2110 { 'command': 'block-job-pause', 'data': { 'device': 'str' } }
2113 # @block-job-resume:
2115 # Resume an active background block operation.
2117 # This command returns immediately after resuming a paused background block
2118 # operation. It is an error to call this command if no operation is in
2119 # progress. Resuming an already running job is not an error.
2121 # This command also clears the error status of the job.
2123 # @device: The job identifier. This used to be a device name (hence
2124 # the name of the parameter), but since QEMU 2.7 it can have
2127 # Returns: Nothing on success
2128 # If no background operation is active on this device, DeviceNotActive
2132 { 'command': 'block-job-resume', 'data': { 'device': 'str' } }
2135 # @block-job-complete:
2137 # Manually trigger completion of an active background block operation. This
2138 # is supported for drive mirroring, where it also switches the device to
2139 # write to the target path only. The ability to complete is signaled with
2140 # a BLOCK_JOB_READY event.
2142 # This command completes an active background block operation synchronously.
2143 # The ordering of this command's return with the BLOCK_JOB_COMPLETED event
2144 # is not defined. Note that if an I/O error occurs during the processing of
2145 # this command: 1) the command itself will fail; 2) the error will be processed
2146 # according to the rerror/werror arguments that were specified when starting
2149 # A cancelled or paused job cannot be completed.
2151 # @device: The job identifier. This used to be a device name (hence
2152 # the name of the parameter), but since QEMU 2.7 it can have
2155 # Returns: Nothing on success
2156 # If no background operation is active on this device, DeviceNotActive
2160 { 'command': 'block-job-complete', 'data': { 'device': 'str' } }
2163 # @BlockdevDiscardOptions:
2165 # Determines how to handle discard requests.
2167 # @ignore: Ignore the request
2168 # @unmap: Forward as an unmap request
2172 { 'enum': 'BlockdevDiscardOptions',
2173 'data': [ 'ignore', 'unmap' ] }
2176 # @BlockdevDetectZeroesOptions:
2178 # Describes the operation mode for the automatic conversion of plain
2179 # zero writes by the OS to driver specific optimized zero write commands.
2181 # @off: Disabled (default)
2183 # @unmap: Enabled and even try to unmap blocks if possible. This requires
2184 # also that @BlockdevDiscardOptions is set to unmap for this device.
2188 { 'enum': 'BlockdevDetectZeroesOptions',
2189 'data': [ 'off', 'on', 'unmap' ] }
2192 # @BlockdevAioOptions:
2194 # Selects the AIO backend to handle I/O requests
2196 # @threads: Use qemu's thread pool
2197 # @native: Use native AIO backend (only Linux and Windows)
2201 { 'enum': 'BlockdevAioOptions',
2202 'data': [ 'threads', 'native' ] }
2205 # @BlockdevCacheOptions:
2207 # Includes cache-related options for block devices
2209 # @direct: enables use of O_DIRECT (bypass the host page cache;
2211 # @no-flush: ignore any flush requests for the device (default:
2216 { 'struct': 'BlockdevCacheOptions',
2217 'data': { '*direct': 'bool',
2218 '*no-flush': 'bool' } }
2223 # Drivers that are supported in block device operations.
2226 # @throttle: Since 2.11
2230 { 'enum': 'BlockdevDriver',
2231 'data': [ 'blkdebug', 'blkverify', 'bochs', 'cloop',
2232 'dmg', 'file', 'ftp', 'ftps', 'gluster', 'host_cdrom',
2233 'host_device', 'http', 'https', 'iscsi', 'luks', 'nbd', 'nfs',
2234 'null-aio', 'null-co', 'parallels', 'qcow', 'qcow2', 'qed',
2235 'quorum', 'raw', 'rbd', 'replication', 'sheepdog', 'ssh',
2236 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat', 'vxhs' ] }
2239 # @BlockdevOptionsFile:
2241 # Driver specific block device options for the file backend.
2243 # @filename: path to the image file
2244 # @pr-manager: the id for the object that will handle persistent reservations
2245 # for this device (default: none, forward the commands via SG_IO;
2247 # @aio: AIO backend (default: threads) (since: 2.8)
2248 # @locking: whether to enable file locking. If set to 'auto', only enable
2249 # when Open File Descriptor (OFD) locking API is available
2250 # (default: auto, since 2.10)
2254 { 'struct': 'BlockdevOptionsFile',
2255 'data': { 'filename': 'str',
2256 '*pr-manager': 'str',
2257 '*locking': 'OnOffAuto',
2258 '*aio': 'BlockdevAioOptions' } }
2261 # @BlockdevOptionsNull:
2263 # Driver specific block device options for the null backend.
2265 # @size: size of the device in bytes.
2266 # @latency-ns: emulated latency (in nanoseconds) in processing
2267 # requests. Default to zero which completes requests immediately.
2272 { 'struct': 'BlockdevOptionsNull',
2273 'data': { '*size': 'int', '*latency-ns': 'uint64' } }
2276 # @BlockdevOptionsVVFAT:
2278 # Driver specific block device options for the vvfat protocol.
2280 # @dir: directory to be exported as FAT image
2281 # @fat-type: FAT type: 12, 16 or 32
2282 # @floppy: whether to export a floppy image (true) or
2283 # partitioned hard disk (false; default)
2284 # @label: set the volume label, limited to 11 bytes. FAT16 and
2285 # FAT32 traditionally have some restrictions on labels, which are
2286 # ignored by most operating systems. Defaults to "QEMU VVFAT".
2288 # @rw: whether to allow write operations (default: false)
2292 { 'struct': 'BlockdevOptionsVVFAT',
2293 'data': { 'dir': 'str', '*fat-type': 'int', '*floppy': 'bool',
2294 '*label': 'str', '*rw': 'bool' } }
2297 # @BlockdevOptionsGenericFormat:
2299 # Driver specific block device options for image format that have no option
2300 # besides their data source.
2302 # @file: reference to or definition of the data source block device
2306 { 'struct': 'BlockdevOptionsGenericFormat',
2307 'data': { 'file': 'BlockdevRef' } }
2310 # @BlockdevOptionsLUKS:
2312 # Driver specific block device options for LUKS.
2314 # @key-secret: the ID of a QCryptoSecret object providing
2315 # the decryption key (since 2.6). Mandatory except when
2316 # doing a metadata-only probe of the image.
2320 { 'struct': 'BlockdevOptionsLUKS',
2321 'base': 'BlockdevOptionsGenericFormat',
2322 'data': { '*key-secret': 'str' } }
2326 # @BlockdevOptionsGenericCOWFormat:
2328 # Driver specific block device options for image format that have no option
2329 # besides their data source and an optional backing file.
2331 # @backing: reference to or definition of the backing file block
2332 # device, null disables the backing file entirely.
2333 # Defaults to the backing file stored the image file.
2337 { 'struct': 'BlockdevOptionsGenericCOWFormat',
2338 'base': 'BlockdevOptionsGenericFormat',
2339 'data': { '*backing': 'BlockdevRefOrNull' } }
2342 # @Qcow2OverlapCheckMode:
2344 # General overlap check modes.
2346 # @none: Do not perform any checks
2348 # @constant: Perform only checks which can be done in constant time and
2349 # without reading anything from disk
2351 # @cached: Perform only checks which can be done without reading anything
2354 # @all: Perform all available overlap checks
2358 { 'enum': 'Qcow2OverlapCheckMode',
2359 'data': [ 'none', 'constant', 'cached', 'all' ] }
2362 # @Qcow2OverlapCheckFlags:
2364 # Structure of flags for each metadata structure. Setting a field to 'true'
2365 # makes qemu guard that structure against unintended overwriting. The default
2366 # value is chosen according to the template given.
2368 # @template: Specifies a template mode which can be adjusted using the other
2369 # flags, defaults to 'cached'
2373 { 'struct': 'Qcow2OverlapCheckFlags',
2374 'data': { '*template': 'Qcow2OverlapCheckMode',
2375 '*main-header': 'bool',
2376 '*active-l1': 'bool',
2377 '*active-l2': 'bool',
2378 '*refcount-table': 'bool',
2379 '*refcount-block': 'bool',
2380 '*snapshot-table': 'bool',
2381 '*inactive-l1': 'bool',
2382 '*inactive-l2': 'bool' } }
2385 # @Qcow2OverlapChecks:
2387 # Specifies which metadata structures should be guarded against unintended
2390 # @flags: set of flags for separate specification of each metadata structure
2393 # @mode: named mode which chooses a specific set of flags
2397 { 'alternate': 'Qcow2OverlapChecks',
2398 'data': { 'flags': 'Qcow2OverlapCheckFlags',
2399 'mode': 'Qcow2OverlapCheckMode' } }
2402 # @BlockdevQcowEncryptionFormat:
2404 # @aes: AES-CBC with plain64 initialization vectors
2408 { 'enum': 'BlockdevQcowEncryptionFormat',
2412 # @BlockdevQcowEncryption:
2416 { 'union': 'BlockdevQcowEncryption',
2417 'base': { 'format': 'BlockdevQcowEncryptionFormat' },
2418 'discriminator': 'format',
2419 'data': { 'aes': 'QCryptoBlockOptionsQCow' } }
2422 # @BlockdevOptionsQcow:
2424 # Driver specific block device options for qcow.
2426 # @encrypt: Image decryption options. Mandatory for
2427 # encrypted images, except when doing a metadata-only
2428 # probe of the image.
2432 { 'struct': 'BlockdevOptionsQcow',
2433 'base': 'BlockdevOptionsGenericCOWFormat',
2434 'data': { '*encrypt': 'BlockdevQcowEncryption' } }
2439 # @BlockdevQcow2EncryptionFormat:
2440 # @aes: AES-CBC with plain64 initialization venctors
2444 { 'enum': 'BlockdevQcow2EncryptionFormat',
2445 'data': [ 'aes', 'luks' ] }
2448 # @BlockdevQcow2Encryption:
2452 { 'union': 'BlockdevQcow2Encryption',
2453 'base': { 'format': 'BlockdevQcow2EncryptionFormat' },
2454 'discriminator': 'format',
2455 'data': { 'aes': 'QCryptoBlockOptionsQCow',
2456 'luks': 'QCryptoBlockOptionsLUKS'} }
2459 # @BlockdevOptionsQcow2:
2461 # Driver specific block device options for qcow2.
2463 # @lazy-refcounts: whether to enable the lazy refcounts
2464 # feature (default is taken from the image file)
2466 # @pass-discard-request: whether discard requests to the qcow2
2467 # device should be forwarded to the data source
2469 # @pass-discard-snapshot: whether discard requests for the data source
2470 # should be issued when a snapshot operation (e.g.
2471 # deleting a snapshot) frees clusters in the qcow2 file
2473 # @pass-discard-other: whether discard requests for the data source
2474 # should be issued on other occasions where a cluster
2477 # @overlap-check: which overlap checks to perform for writes
2478 # to the image, defaults to 'cached' (since 2.2)
2480 # @cache-size: the maximum total size of the L2 table and
2481 # refcount block caches in bytes (since 2.2)
2483 # @l2-cache-size: the maximum size of the L2 table cache in
2486 # @refcount-cache-size: the maximum size of the refcount block cache
2487 # in bytes (since 2.2)
2489 # @cache-clean-interval: clean unused entries in the L2 and refcount
2490 # caches. The interval is in seconds. The default value
2491 # is 0 and it disables this feature (since 2.5)
2492 # @encrypt: Image decryption options. Mandatory for
2493 # encrypted images, except when doing a metadata-only
2494 # probe of the image. (since 2.10)
2498 { 'struct': 'BlockdevOptionsQcow2',
2499 'base': 'BlockdevOptionsGenericCOWFormat',
2500 'data': { '*lazy-refcounts': 'bool',
2501 '*pass-discard-request': 'bool',
2502 '*pass-discard-snapshot': 'bool',
2503 '*pass-discard-other': 'bool',
2504 '*overlap-check': 'Qcow2OverlapChecks',
2505 '*cache-size': 'int',
2506 '*l2-cache-size': 'int',
2507 '*refcount-cache-size': 'int',
2508 '*cache-clean-interval': 'int',
2509 '*encrypt': 'BlockdevQcow2Encryption' } }
2512 # @BlockdevOptionsSsh:
2514 # @server: host address
2516 # @path: path to the image on the host
2518 # @user: user as which to connect, defaults to current
2521 # TODO: Expose the host_key_check option in QMP
2525 { 'struct': 'BlockdevOptionsSsh',
2526 'data': { 'server': 'InetSocketAddress',
2534 # Trigger events supported by blkdebug.
2536 # @l1_shrink_write_table: write zeros to the l1 table to shrink image.
2539 # @l1_shrink_free_l2_clusters: discard the l2 tables. (since 2.11)
2541 # @cor_write: a write due to copy-on-read (since 2.11)
2545 { 'enum': 'BlkdebugEvent', 'prefix': 'BLKDBG',
2546 'data': [ 'l1_update', 'l1_grow_alloc_table', 'l1_grow_write_table',
2547 'l1_grow_activate_table', 'l2_load', 'l2_update',
2548 'l2_update_compressed', 'l2_alloc_cow_read', 'l2_alloc_write',
2549 'read_aio', 'read_backing_aio', 'read_compressed', 'write_aio',
2550 'write_compressed', 'vmstate_load', 'vmstate_save', 'cow_read',
2551 'cow_write', 'reftable_load', 'reftable_grow', 'reftable_update',
2552 'refblock_load', 'refblock_update', 'refblock_update_part',
2553 'refblock_alloc', 'refblock_alloc_hookup', 'refblock_alloc_write',
2554 'refblock_alloc_write_blocks', 'refblock_alloc_write_table',
2555 'refblock_alloc_switch_table', 'cluster_alloc',
2556 'cluster_alloc_bytes', 'cluster_free', 'flush_to_os',
2557 'flush_to_disk', 'pwritev_rmw_head', 'pwritev_rmw_after_head',
2558 'pwritev_rmw_tail', 'pwritev_rmw_after_tail', 'pwritev',
2559 'pwritev_zero', 'pwritev_done', 'empty_image_prepare',
2560 'l1_shrink_write_table', 'l1_shrink_free_l2_clusters',
2564 # @BlkdebugInjectErrorOptions:
2566 # Describes a single error injection for blkdebug.
2568 # @event: trigger event
2570 # @state: the state identifier blkdebug needs to be in to
2571 # actually trigger the event; defaults to "any"
2573 # @errno: error identifier (errno) to be returned; defaults to
2576 # @sector: specifies the sector index which has to be affected
2577 # in order to actually trigger the event; defaults to "any
2580 # @once: disables further events after this one has been
2581 # triggered; defaults to false
2583 # @immediately: fail immediately; defaults to false
2587 { 'struct': 'BlkdebugInjectErrorOptions',
2588 'data': { 'event': 'BlkdebugEvent',
2593 '*immediately': 'bool' } }
2596 # @BlkdebugSetStateOptions:
2598 # Describes a single state-change event for blkdebug.
2600 # @event: trigger event
2602 # @state: the current state identifier blkdebug needs to be in;
2605 # @new_state: the state identifier blkdebug is supposed to assume if
2606 # this event is triggered
2610 { 'struct': 'BlkdebugSetStateOptions',
2611 'data': { 'event': 'BlkdebugEvent',
2613 'new_state': 'int' } }
2616 # @BlockdevOptionsBlkdebug:
2618 # Driver specific block device options for blkdebug.
2620 # @image: underlying raw block device (or image file)
2622 # @config: filename of the configuration file
2624 # @align: required alignment for requests in bytes, must be
2625 # positive power of 2, or 0 for default
2627 # @max-transfer: maximum size for I/O transfers in bytes, must be
2628 # positive multiple of @align and of the underlying
2629 # file's request alignment (but need not be a power of
2630 # 2), or 0 for default (since 2.10)
2632 # @opt-write-zero: preferred alignment for write zero requests in bytes,
2633 # must be positive multiple of @align and of the
2634 # underlying file's request alignment (but need not be a
2635 # power of 2), or 0 for default (since 2.10)
2637 # @max-write-zero: maximum size for write zero requests in bytes, must be
2638 # positive multiple of @align, of @opt-write-zero, and of
2639 # the underlying file's request alignment (but need not
2640 # be a power of 2), or 0 for default (since 2.10)
2642 # @opt-discard: preferred alignment for discard requests in bytes, must
2643 # be positive multiple of @align and of the underlying
2644 # file's request alignment (but need not be a power of
2645 # 2), or 0 for default (since 2.10)
2647 # @max-discard: maximum size for discard requests in bytes, must be
2648 # positive multiple of @align, of @opt-discard, and of
2649 # the underlying file's request alignment (but need not
2650 # be a power of 2), or 0 for default (since 2.10)
2652 # @inject-error: array of error injection descriptions
2654 # @set-state: array of state-change descriptions
2658 { 'struct': 'BlockdevOptionsBlkdebug',
2659 'data': { 'image': 'BlockdevRef',
2661 '*align': 'int', '*max-transfer': 'int32',
2662 '*opt-write-zero': 'int32', '*max-write-zero': 'int32',
2663 '*opt-discard': 'int32', '*max-discard': 'int32',
2664 '*inject-error': ['BlkdebugInjectErrorOptions'],
2665 '*set-state': ['BlkdebugSetStateOptions'] } }
2668 # @BlockdevOptionsBlkverify:
2670 # Driver specific block device options for blkverify.
2672 # @test: block device to be tested
2674 # @raw: raw image used for verification
2678 { 'struct': 'BlockdevOptionsBlkverify',
2679 'data': { 'test': 'BlockdevRef',
2680 'raw': 'BlockdevRef' } }
2683 # @QuorumReadPattern:
2685 # An enumeration of quorum read patterns.
2687 # @quorum: read all the children and do a quorum vote on reads
2689 # @fifo: read only from the first child that has not failed
2693 { 'enum': 'QuorumReadPattern', 'data': [ 'quorum', 'fifo' ] }
2696 # @BlockdevOptionsQuorum:
2698 # Driver specific block device options for Quorum
2700 # @blkverify: true if the driver must print content mismatch
2701 # set to false by default
2703 # @children: the children block devices to use
2705 # @vote-threshold: the vote limit under which a read will fail
2707 # @rewrite-corrupted: rewrite corrupted data when quorum is reached
2710 # @read-pattern: choose read pattern and set to quorum by default
2715 { 'struct': 'BlockdevOptionsQuorum',
2716 'data': { '*blkverify': 'bool',
2717 'children': [ 'BlockdevRef' ],
2718 'vote-threshold': 'int',
2719 '*rewrite-corrupted': 'bool',
2720 '*read-pattern': 'QuorumReadPattern' } }
2723 # @BlockdevOptionsGluster:
2725 # Driver specific block device options for Gluster
2727 # @volume: name of gluster volume where VM image resides
2729 # @path: absolute path to image file in gluster volume
2731 # @server: gluster servers description
2733 # @debug: libgfapi log level (default '4' which is Error)
2736 # @logfile: libgfapi log file (default /dev/stderr) (Since 2.8)
2740 { 'struct': 'BlockdevOptionsGluster',
2741 'data': { 'volume': 'str',
2743 'server': ['SocketAddress'],
2745 '*logfile': 'str' } }
2750 # An enumeration of libiscsi transport types
2754 { 'enum': 'IscsiTransport',
2755 'data': [ 'tcp', 'iser' ] }
2758 # @IscsiHeaderDigest:
2760 # An enumeration of header digests supported by libiscsi
2764 { 'enum': 'IscsiHeaderDigest',
2765 'prefix': 'QAPI_ISCSI_HEADER_DIGEST',
2766 'data': [ 'crc32c', 'none', 'crc32c-none', 'none-crc32c' ] }
2769 # @BlockdevOptionsIscsi:
2771 # @transport: The iscsi transport type
2773 # @portal: The address of the iscsi portal
2775 # @target: The target iqn name
2777 # @lun: LUN to connect to. Defaults to 0.
2779 # @user: User name to log in with. If omitted, no CHAP
2780 # authentication is performed.
2782 # @password-secret: The ID of a QCryptoSecret object providing
2783 # the password for the login. This option is required if
2784 # @user is specified.
2786 # @initiator-name: The iqn name we want to identify to the target
2787 # as. If this option is not specified, an initiator name is
2788 # generated automatically.
2790 # @header-digest: The desired header digest. Defaults to
2793 # @timeout: Timeout in seconds after which a request will
2794 # timeout. 0 means no timeout and is the default.
2796 # Driver specific block device options for iscsi
2800 { 'struct': 'BlockdevOptionsIscsi',
2801 'data': { 'transport': 'IscsiTransport',
2806 '*password-secret': 'str',
2807 '*initiator-name': 'str',
2808 '*header-digest': 'IscsiHeaderDigest',
2809 '*timeout': 'int' } }
2813 # @BlockdevOptionsRbd:
2815 # @pool: Ceph pool name.
2817 # @image: Image name in the Ceph pool.
2819 # @conf: path to Ceph configuration file. Values
2820 # in the configuration file will be overridden by
2821 # options specified via QAPI.
2823 # @snapshot: Ceph snapshot name.
2825 # @user: Ceph id name.
2827 # @server: Monitor host address and port. This maps
2828 # to the "mon_host" Ceph option.
2832 { 'struct': 'BlockdevOptionsRbd',
2833 'data': { 'pool': 'str',
2838 '*server': ['InetSocketAddressBase'] } }
2841 # @BlockdevOptionsSheepdog:
2843 # Driver specific block device options for sheepdog
2845 # @vdi: Virtual disk image name
2846 # @server: The Sheepdog server to connect to
2847 # @snap-id: Snapshot ID
2848 # @tag: Snapshot tag name
2850 # Only one of @snap-id and @tag may be present.
2854 { 'struct': 'BlockdevOptionsSheepdog',
2855 'data': { 'server': 'SocketAddress',
2857 '*snap-id': 'uint32',
2863 # An enumeration of replication modes.
2865 # @primary: Primary mode, the vm's state will be sent to secondary QEMU.
2867 # @secondary: Secondary mode, receive the vm's state from primary QEMU.
2871 { 'enum' : 'ReplicationMode', 'data' : [ 'primary', 'secondary' ] }
2874 # @BlockdevOptionsReplication:
2876 # Driver specific block device options for replication
2878 # @mode: the replication mode
2880 # @top-id: In secondary mode, node name or device ID of the root
2881 # node who owns the replication node chain. Must not be given in
2886 { 'struct': 'BlockdevOptionsReplication',
2887 'base': 'BlockdevOptionsGenericFormat',
2888 'data': { 'mode': 'ReplicationMode',
2889 '*top-id': 'str' } }
2894 # An enumeration of NFS transport types
2896 # @inet: TCP transport
2900 { 'enum': 'NFSTransport',
2901 'data': [ 'inet' ] }
2906 # Captures the address of the socket
2908 # @type: transport type used for NFS (only TCP supported)
2910 # @host: host address for NFS server
2914 { 'struct': 'NFSServer',
2915 'data': { 'type': 'NFSTransport',
2919 # @BlockdevOptionsNfs:
2921 # Driver specific block device option for NFS
2923 # @server: host address
2925 # @path: path of the image on the host
2927 # @user: UID value to use when talking to the
2928 # server (defaults to 65534 on Windows and getuid()
2931 # @group: GID value to use when talking to the
2932 # server (defaults to 65534 on Windows and getgid()
2935 # @tcp-syn-count: number of SYNs during the session
2936 # establishment (defaults to libnfs default)
2938 # @readahead-size: set the readahead size in bytes (defaults
2939 # to libnfs default)
2941 # @page-cache-size: set the pagecache size in bytes (defaults
2942 # to libnfs default)
2944 # @debug: set the NFS debug level (max 2) (defaults
2945 # to libnfs default)
2949 { 'struct': 'BlockdevOptionsNfs',
2950 'data': { 'server': 'NFSServer',
2954 '*tcp-syn-count': 'int',
2955 '*readahead-size': 'int',
2956 '*page-cache-size': 'int',
2960 # @BlockdevOptionsCurlBase:
2962 # Driver specific block device options shared by all protocols supported by the
2965 # @url: URL of the image file
2967 # @readahead: Size of the read-ahead cache; must be a multiple of
2968 # 512 (defaults to 256 kB)
2970 # @timeout: Timeout for connections, in seconds (defaults to 5)
2972 # @username: Username for authentication (defaults to none)
2974 # @password-secret: ID of a QCryptoSecret object providing a password
2975 # for authentication (defaults to no password)
2977 # @proxy-username: Username for proxy authentication (defaults to none)
2979 # @proxy-password-secret: ID of a QCryptoSecret object providing a password
2980 # for proxy authentication (defaults to no password)
2984 { 'struct': 'BlockdevOptionsCurlBase',
2985 'data': { 'url': 'str',
2986 '*readahead': 'int',
2989 '*password-secret': 'str',
2990 '*proxy-username': 'str',
2991 '*proxy-password-secret': 'str' } }
2994 # @BlockdevOptionsCurlHttp:
2996 # Driver specific block device options for HTTP connections over the curl
2997 # backend. URLs must start with "http://".
2999 # @cookie: List of cookies to set; format is
3000 # "name1=content1; name2=content2;" as explained by
3001 # CURLOPT_COOKIE(3). Defaults to no cookies.
3003 # @cookie-secret: ID of a QCryptoSecret object providing the cookie data in a
3004 # secure way. See @cookie for the format. (since 2.10)
3008 { 'struct': 'BlockdevOptionsCurlHttp',
3009 'base': 'BlockdevOptionsCurlBase',
3010 'data': { '*cookie': 'str',
3011 '*cookie-secret': 'str'} }
3014 # @BlockdevOptionsCurlHttps:
3016 # Driver specific block device options for HTTPS connections over the curl
3017 # backend. URLs must start with "https://".
3019 # @cookie: List of cookies to set; format is
3020 # "name1=content1; name2=content2;" as explained by
3021 # CURLOPT_COOKIE(3). Defaults to no cookies.
3023 # @sslverify: Whether to verify the SSL certificate's validity (defaults to
3026 # @cookie-secret: ID of a QCryptoSecret object providing the cookie data in a
3027 # secure way. See @cookie for the format. (since 2.10)
3031 { 'struct': 'BlockdevOptionsCurlHttps',
3032 'base': 'BlockdevOptionsCurlBase',
3033 'data': { '*cookie': 'str',
3034 '*sslverify': 'bool',
3035 '*cookie-secret': 'str'} }
3038 # @BlockdevOptionsCurlFtp:
3040 # Driver specific block device options for FTP connections over the curl
3041 # backend. URLs must start with "ftp://".
3045 { 'struct': 'BlockdevOptionsCurlFtp',
3046 'base': 'BlockdevOptionsCurlBase',
3050 # @BlockdevOptionsCurlFtps:
3052 # Driver specific block device options for FTPS connections over the curl
3053 # backend. URLs must start with "ftps://".
3055 # @sslverify: Whether to verify the SSL certificate's validity (defaults to
3060 { 'struct': 'BlockdevOptionsCurlFtps',
3061 'base': 'BlockdevOptionsCurlBase',
3062 'data': { '*sslverify': 'bool' } }
3065 # @BlockdevOptionsNbd:
3067 # Driver specific block device options for NBD.
3069 # @server: NBD server address
3071 # @export: export name
3073 # @tls-creds: TLS credentials ID
3077 { 'struct': 'BlockdevOptionsNbd',
3078 'data': { 'server': 'SocketAddress',
3080 '*tls-creds': 'str' } }
3083 # @BlockdevOptionsRaw:
3085 # Driver specific block device options for the raw driver.
3087 # @offset: position where the block device starts
3088 # @size: the assumed size of the device
3092 { 'struct': 'BlockdevOptionsRaw',
3093 'base': 'BlockdevOptionsGenericFormat',
3094 'data': { '*offset': 'int', '*size': 'int' } }
3097 # @BlockdevOptionsVxHS:
3099 # Driver specific block device options for VxHS
3101 # @vdisk-id: UUID of VxHS volume
3102 # @server: vxhs server IP, port
3103 # @tls-creds: TLS credentials ID
3107 { 'struct': 'BlockdevOptionsVxHS',
3108 'data': { 'vdisk-id': 'str',
3109 'server': 'InetSocketAddressBase',
3110 '*tls-creds': 'str' } }
3113 # @BlockdevOptionsThrottle:
3115 # Driver specific block device options for the throttle driver
3117 # @throttle-group: the name of the throttle-group object to use. It
3118 # must already exist.
3119 # @file: reference to or definition of the data source block device
3122 { 'struct': 'BlockdevOptionsThrottle',
3123 'data': { 'throttle-group': 'str',
3124 'file' : 'BlockdevRef'
3129 # Options for creating a block device. Many options are available for all
3130 # block devices, independent of the block driver:
3132 # @driver: block driver name
3133 # @node-name: the node name of the new node (Since 2.0).
3134 # This option is required on the top level of blockdev-add.
3135 # @discard: discard-related options (default: ignore)
3136 # @cache: cache-related options
3137 # @read-only: whether the block device should be read-only
3139 # @detect-zeroes: detect and optimize zero writes (Since 2.1)
3141 # @force-share: force share all permission on added nodes.
3142 # Requires read-only=true. (Since 2.10)
3144 # Remaining options are determined by the block driver.
3148 { 'union': 'BlockdevOptions',
3149 'base': { 'driver': 'BlockdevDriver',
3150 '*node-name': 'str',
3151 '*discard': 'BlockdevDiscardOptions',
3152 '*cache': 'BlockdevCacheOptions',
3153 '*read-only': 'bool',
3154 '*force-share': 'bool',
3155 '*detect-zeroes': 'BlockdevDetectZeroesOptions' },
3156 'discriminator': 'driver',
3158 'blkdebug': 'BlockdevOptionsBlkdebug',
3159 'blkverify': 'BlockdevOptionsBlkverify',
3160 'bochs': 'BlockdevOptionsGenericFormat',
3161 'cloop': 'BlockdevOptionsGenericFormat',
3162 'dmg': 'BlockdevOptionsGenericFormat',
3163 'file': 'BlockdevOptionsFile',
3164 'ftp': 'BlockdevOptionsCurlFtp',
3165 'ftps': 'BlockdevOptionsCurlFtps',
3166 'gluster': 'BlockdevOptionsGluster',
3167 'host_cdrom': 'BlockdevOptionsFile',
3168 'host_device':'BlockdevOptionsFile',
3169 'http': 'BlockdevOptionsCurlHttp',
3170 'https': 'BlockdevOptionsCurlHttps',
3171 'iscsi': 'BlockdevOptionsIscsi',
3172 'luks': 'BlockdevOptionsLUKS',
3173 'nbd': 'BlockdevOptionsNbd',
3174 'nfs': 'BlockdevOptionsNfs',
3175 'null-aio': 'BlockdevOptionsNull',
3176 'null-co': 'BlockdevOptionsNull',
3177 'parallels': 'BlockdevOptionsGenericFormat',
3178 'qcow2': 'BlockdevOptionsQcow2',
3179 'qcow': 'BlockdevOptionsQcow',
3180 'qed': 'BlockdevOptionsGenericCOWFormat',
3181 'quorum': 'BlockdevOptionsQuorum',
3182 'raw': 'BlockdevOptionsRaw',
3183 'rbd': 'BlockdevOptionsRbd',
3184 'replication':'BlockdevOptionsReplication',
3185 'sheepdog': 'BlockdevOptionsSheepdog',
3186 'ssh': 'BlockdevOptionsSsh',
3187 'throttle': 'BlockdevOptionsThrottle',
3188 'vdi': 'BlockdevOptionsGenericFormat',
3189 'vhdx': 'BlockdevOptionsGenericFormat',
3190 'vmdk': 'BlockdevOptionsGenericCOWFormat',
3191 'vpc': 'BlockdevOptionsGenericFormat',
3192 'vvfat': 'BlockdevOptionsVVFAT',
3193 'vxhs': 'BlockdevOptionsVxHS'
3199 # Reference to a block device.
3201 # @definition: defines a new block device inline
3202 # @reference: references the ID of an existing block device
3206 { 'alternate': 'BlockdevRef',
3207 'data': { 'definition': 'BlockdevOptions',
3208 'reference': 'str' } }
3211 # @BlockdevRefOrNull:
3213 # Reference to a block device.
3215 # @definition: defines a new block device inline
3216 # @reference: references the ID of an existing block device.
3217 # An empty string means that no block device should
3218 # be referenced. Deprecated; use null instead.
3219 # @null: No block device should be referenced (since 2.10)
3223 { 'alternate': 'BlockdevRefOrNull',
3224 'data': { 'definition': 'BlockdevOptions',
3231 # Creates a new block device. If the @id option is given at the top level, a
3232 # BlockBackend will be created; otherwise, @node-name is mandatory at the top
3233 # level and no BlockBackend will be created.
3240 # -> { "execute": "blockdev-add",
3242 # "driver": "qcow2",
3243 # "node-name": "test1",
3246 # "filename": "test.qcow2"
3250 # <- { "return": {} }
3253 # -> { "execute": "blockdev-add",
3255 # "driver": "qcow2",
3256 # "node-name": "node0",
3257 # "discard": "unmap",
3263 # "filename": "/tmp/test.qcow2"
3269 # "filename": "/dev/fdset/4"
3275 # <- { "return": {} }
3278 { 'command': 'blockdev-add', 'data': 'BlockdevOptions', 'boxed': true }
3283 # Deletes a block device that has been added using blockdev-add.
3284 # The command will fail if the node is attached to a device or is
3285 # otherwise being used.
3287 # @node-name: Name of the graph node to delete.
3293 # -> { "execute": "blockdev-add",
3295 # "driver": "qcow2",
3296 # "node-name": "node0",
3299 # "filename": "test.qcow2"
3303 # <- { "return": {} }
3305 # -> { "execute": "blockdev-del",
3306 # "arguments": { "node-name": "node0" }
3308 # <- { "return": {} }
3311 { 'command': 'blockdev-del', 'data': { 'node-name': 'str' } }
3314 # @blockdev-open-tray:
3316 # Opens a block device's tray. If there is a block driver state tree inserted as
3317 # a medium, it will become inaccessible to the guest (but it will remain
3318 # associated to the block device, so closing the tray will make it accessible
3321 # If the tray was already open before, this will be a no-op.
3323 # Once the tray opens, a DEVICE_TRAY_MOVED event is emitted. There are cases in
3324 # which no such event will be generated, these include:
3325 # - if the guest has locked the tray, @force is false and the guest does not
3326 # respond to the eject request
3327 # - if the BlockBackend denoted by @device does not have a guest device attached
3329 # - if the guest device does not have an actual tray
3331 # @device: Block device name (deprecated, use @id instead)
3333 # @id: The name or QOM path of the guest device (since: 2.8)
3335 # @force: if false (the default), an eject request will be sent to
3336 # the guest if it has locked the tray (and the tray will not be opened
3337 # immediately); if true, the tray will be opened regardless of whether
3344 # -> { "execute": "blockdev-open-tray",
3345 # "arguments": { "id": "ide0-1-0" } }
3347 # <- { "timestamp": { "seconds": 1418751016,
3348 # "microseconds": 716996 },
3349 # "event": "DEVICE_TRAY_MOVED",
3350 # "data": { "device": "ide1-cd0",
3352 # "tray-open": true } }
3354 # <- { "return": {} }
3357 { 'command': 'blockdev-open-tray',
3358 'data': { '*device': 'str',
3360 '*force': 'bool' } }
3363 # @blockdev-close-tray:
3365 # Closes a block device's tray. If there is a block driver state tree associated
3366 # with the block device (which is currently ejected), that tree will be loaded
3369 # If the tray was already closed before, this will be a no-op.
3371 # @device: Block device name (deprecated, use @id instead)
3373 # @id: The name or QOM path of the guest device (since: 2.8)
3379 # -> { "execute": "blockdev-close-tray",
3380 # "arguments": { "id": "ide0-1-0" } }
3382 # <- { "timestamp": { "seconds": 1418751345,
3383 # "microseconds": 272147 },
3384 # "event": "DEVICE_TRAY_MOVED",
3385 # "data": { "device": "ide1-cd0",
3387 # "tray-open": false } }
3389 # <- { "return": {} }
3392 { 'command': 'blockdev-close-tray',
3393 'data': { '*device': 'str',
3397 # @x-blockdev-remove-medium:
3399 # Removes a medium (a block driver state tree) from a block device. That block
3400 # device's tray must currently be open (unless there is no attached guest
3403 # If the tray is open and there is no medium inserted, this will be a no-op.
3405 # @device: Block device name (deprecated, use @id instead)
3407 # @id: The name or QOM path of the guest device (since: 2.8)
3409 # Note: This command is still a work in progress and is considered experimental.
3410 # Stay away from it unless you want to help with its development.
3416 # -> { "execute": "x-blockdev-remove-medium",
3417 # "arguments": { "id": "ide0-1-0" } }
3419 # <- { "error": { "class": "GenericError",
3420 # "desc": "Tray of device 'ide0-1-0' is not open" } }
3422 # -> { "execute": "blockdev-open-tray",
3423 # "arguments": { "id": "ide0-1-0" } }
3425 # <- { "timestamp": { "seconds": 1418751627,
3426 # "microseconds": 549958 },
3427 # "event": "DEVICE_TRAY_MOVED",
3428 # "data": { "device": "ide1-cd0",
3430 # "tray-open": true } }
3432 # <- { "return": {} }
3434 # -> { "execute": "x-blockdev-remove-medium",
3435 # "arguments": { "id": "ide0-1-0" } }
3437 # <- { "return": {} }
3440 { 'command': 'x-blockdev-remove-medium',
3441 'data': { '*device': 'str',
3445 # @x-blockdev-insert-medium:
3447 # Inserts a medium (a block driver state tree) into a block device. That block
3448 # device's tray must currently be open (unless there is no attached guest
3449 # device) and there must be no medium inserted already.
3451 # @device: Block device name (deprecated, use @id instead)
3453 # @id: The name or QOM path of the guest device (since: 2.8)
3455 # @node-name: name of a node in the block driver state graph
3457 # Note: This command is still a work in progress and is considered experimental.
3458 # Stay away from it unless you want to help with its development.
3464 # -> { "execute": "blockdev-add",
3466 # "node-name": "node0",
3468 # "file": { "driver": "file",
3469 # "filename": "fedora.iso" } } }
3470 # <- { "return": {} }
3472 # -> { "execute": "x-blockdev-insert-medium",
3473 # "arguments": { "id": "ide0-1-0",
3474 # "node-name": "node0" } }
3476 # <- { "return": {} }
3479 { 'command': 'x-blockdev-insert-medium',
3480 'data': { '*device': 'str',
3482 'node-name': 'str'} }
3486 # @BlockdevChangeReadOnlyMode:
3488 # Specifies the new read-only mode of a block device subject to the
3489 # @blockdev-change-medium command.
3491 # @retain: Retains the current read-only mode
3493 # @read-only: Makes the device read-only
3495 # @read-write: Makes the device writable
3500 { 'enum': 'BlockdevChangeReadOnlyMode',
3501 'data': ['retain', 'read-only', 'read-write'] }
3505 # @blockdev-change-medium:
3507 # Changes the medium inserted into a block device by ejecting the current medium
3508 # and loading a new image file which is inserted as the new medium (this command
3509 # combines blockdev-open-tray, x-blockdev-remove-medium,
3510 # x-blockdev-insert-medium and blockdev-close-tray).
3512 # @device: Block device name (deprecated, use @id instead)
3514 # @id: The name or QOM path of the guest device
3517 # @filename: filename of the new image to be loaded
3519 # @format: format to open the new image with (defaults to
3520 # the probed format)
3522 # @read-only-mode: change the read-only mode of the device; defaults
3529 # 1. Change a removable medium
3531 # -> { "execute": "blockdev-change-medium",
3532 # "arguments": { "id": "ide0-1-0",
3533 # "filename": "/srv/images/Fedora-12-x86_64-DVD.iso",
3534 # "format": "raw" } }
3535 # <- { "return": {} }
3537 # 2. Load a read-only medium into a writable drive
3539 # -> { "execute": "blockdev-change-medium",
3540 # "arguments": { "id": "floppyA",
3541 # "filename": "/srv/images/ro.img",
3543 # "read-only-mode": "retain" } }
3546 # { "class": "GenericError",
3547 # "desc": "Could not open '/srv/images/ro.img': Permission denied" } }
3549 # -> { "execute": "blockdev-change-medium",
3550 # "arguments": { "id": "floppyA",
3551 # "filename": "/srv/images/ro.img",
3553 # "read-only-mode": "read-only" } }
3555 # <- { "return": {} }
3558 { 'command': 'blockdev-change-medium',
3559 'data': { '*device': 'str',
3563 '*read-only-mode': 'BlockdevChangeReadOnlyMode' } }
3567 # @BlockErrorAction:
3569 # An enumeration of action that has been taken when a DISK I/O occurs
3571 # @ignore: error has been ignored
3573 # @report: error has been reported to the device
3575 # @stop: error caused VM to be stopped
3579 { 'enum': 'BlockErrorAction',
3580 'data': [ 'ignore', 'report', 'stop' ] }
3584 # @BLOCK_IMAGE_CORRUPTED:
3586 # Emitted when a disk image is being marked corrupt. The image can be
3587 # identified by its device or node name. The 'device' field is always
3588 # present for compatibility reasons, but it can be empty ("") if the
3589 # image does not have a device name associated.
3591 # @device: device name. This is always present for compatibility
3592 # reasons, but it can be empty ("") if the image does not
3593 # have a device name associated.
3595 # @node-name: node name (Since: 2.4)
3597 # @msg: informative message for human consumption, such as the kind of
3598 # corruption being detected. It should not be parsed by machine as it is
3599 # not guaranteed to be stable
3601 # @offset: if the corruption resulted from an image access, this is
3602 # the host's access offset into the image
3604 # @size: if the corruption resulted from an image access, this is
3607 # @fatal: if set, the image is marked corrupt and therefore unusable after this
3608 # event and must be repaired (Since 2.2; before, every
3609 # BLOCK_IMAGE_CORRUPTED event was fatal)
3611 # Note: If action is "stop", a STOP event will eventually follow the
3612 # BLOCK_IO_ERROR event.
3616 # <- { "event": "BLOCK_IMAGE_CORRUPTED",
3617 # "data": { "device": "ide0-hd0", "node-name": "node0",
3618 # "msg": "Prevented active L1 table overwrite", "offset": 196608,
3620 # "timestamp": { "seconds": 1378126126, "microseconds": 966463 } }
3624 { 'event': 'BLOCK_IMAGE_CORRUPTED',
3625 'data': { 'device' : 'str',
3626 '*node-name' : 'str',
3630 'fatal' : 'bool' } }
3635 # Emitted when a disk I/O error occurs
3637 # @device: device name. This is always present for compatibility
3638 # reasons, but it can be empty ("") if the image does not
3639 # have a device name associated.
3641 # @node-name: node name. Note that errors may be reported for the root node
3642 # that is directly attached to a guest device rather than for the
3643 # node where the error occurred. (Since: 2.8)
3645 # @operation: I/O operation
3647 # @action: action that has been taken
3649 # @nospace: true if I/O error was caused due to a no-space
3650 # condition. This key is only present if query-block's
3651 # io-status is present, please see query-block documentation
3652 # for more information (since: 2.2)
3654 # @reason: human readable string describing the error cause.
3655 # (This field is a debugging aid for humans, it should not
3656 # be parsed by applications) (since: 2.2)
3658 # Note: If action is "stop", a STOP event will eventually follow the
3659 # BLOCK_IO_ERROR event
3665 # <- { "event": "BLOCK_IO_ERROR",
3666 # "data": { "device": "ide0-hd1",
3667 # "node-name": "#block212",
3668 # "operation": "write",
3669 # "action": "stop" },
3670 # "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
3673 { 'event': 'BLOCK_IO_ERROR',
3674 'data': { 'device': 'str', 'node-name': 'str', 'operation': 'IoOperationType',
3675 'action': 'BlockErrorAction', '*nospace': 'bool',
3679 # @BLOCK_JOB_COMPLETED:
3681 # Emitted when a block job has completed
3685 # @device: The job identifier. Originally the device name but other
3686 # values are allowed since QEMU 2.7
3688 # @len: maximum progress value
3690 # @offset: current progress value. On success this is equal to len.
3691 # On failure this is less than len
3693 # @speed: rate limit, bytes per second
3695 # @error: error message. Only present on failure. This field
3696 # contains a human-readable error message. There are no semantics
3697 # other than that streaming has failed and clients should not try to
3698 # interpret the error string
3704 # <- { "event": "BLOCK_JOB_COMPLETED",
3705 # "data": { "type": "stream", "device": "virtio-disk0",
3706 # "len": 10737418240, "offset": 10737418240,
3708 # "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }
3711 { 'event': 'BLOCK_JOB_COMPLETED',
3712 'data': { 'type' : 'BlockJobType',
3720 # @BLOCK_JOB_CANCELLED:
3722 # Emitted when a block job has been cancelled
3726 # @device: The job identifier. Originally the device name but other
3727 # values are allowed since QEMU 2.7
3729 # @len: maximum progress value
3731 # @offset: current progress value. On success this is equal to len.
3732 # On failure this is less than len
3734 # @speed: rate limit, bytes per second
3740 # <- { "event": "BLOCK_JOB_CANCELLED",
3741 # "data": { "type": "stream", "device": "virtio-disk0",
3742 # "len": 10737418240, "offset": 134217728,
3744 # "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }
3747 { 'event': 'BLOCK_JOB_CANCELLED',
3748 'data': { 'type' : 'BlockJobType',
3757 # Emitted when a block job encounters an error
3759 # @device: The job identifier. Originally the device name but other
3760 # values are allowed since QEMU 2.7
3762 # @operation: I/O operation
3764 # @action: action that has been taken
3770 # <- { "event": "BLOCK_JOB_ERROR",
3771 # "data": { "device": "ide0-hd1",
3772 # "operation": "write",
3773 # "action": "stop" },
3774 # "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
3777 { 'event': 'BLOCK_JOB_ERROR',
3778 'data': { 'device' : 'str',
3779 'operation': 'IoOperationType',
3780 'action' : 'BlockErrorAction' } }
3785 # Emitted when a block job is ready to complete
3789 # @device: The job identifier. Originally the device name but other
3790 # values are allowed since QEMU 2.7
3792 # @len: maximum progress value
3794 # @offset: current progress value. On success this is equal to len.
3795 # On failure this is less than len
3797 # @speed: rate limit, bytes per second
3799 # Note: The "ready to complete" status is always reset by a @BLOCK_JOB_ERROR
3806 # <- { "event": "BLOCK_JOB_READY",
3807 # "data": { "device": "drive0", "type": "mirror", "speed": 0,
3808 # "len": 2097152, "offset": 2097152 }
3809 # "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
3812 { 'event': 'BLOCK_JOB_READY',
3813 'data': { 'type' : 'BlockJobType',
3822 # Preallocation mode of QEMU image file
3824 # @off: no preallocation
3825 # @metadata: preallocate only for metadata
3826 # @falloc: like @full preallocation but allocate disk space by
3827 # posix_fallocate() rather than writing zeros.
3828 # @full: preallocate all data by writing zeros to device to ensure disk
3829 # space is really available. @full preallocation also sets up
3830 # metadata correctly.
3834 { 'enum': 'PreallocMode',
3835 'data': [ 'off', 'metadata', 'falloc', 'full' ] }
3838 # @BLOCK_WRITE_THRESHOLD:
3840 # Emitted when writes on block device reaches or exceeds the
3841 # configured write threshold. For thin-provisioned devices, this
3842 # means the device should be extended to avoid pausing for
3844 # The event is one shot. Once triggered, it needs to be
3845 # re-registered with another block-set-write-threshold command.
3847 # @node-name: graph node name on which the threshold was exceeded.
3849 # @amount-exceeded: amount of data which exceeded the threshold, in bytes.
3851 # @write-threshold: last configured threshold, in bytes.
3855 { 'event': 'BLOCK_WRITE_THRESHOLD',
3856 'data': { 'node-name': 'str',
3857 'amount-exceeded': 'uint64',
3858 'write-threshold': 'uint64' } }
3861 # @block-set-write-threshold:
3863 # Change the write threshold for a block drive. An event will be
3864 # delivered if a write to this block drive crosses the configured
3865 # threshold. The threshold is an offset, thus must be
3866 # non-negative. Default is no write threshold. Setting the threshold
3867 # to zero disables it.
3869 # This is useful to transparently resize thin-provisioned drives without
3870 # the guest OS noticing.
3872 # @node-name: graph node name on which the threshold must be set.
3874 # @write-threshold: configured threshold for the block device, bytes.
3875 # Use 0 to disable the threshold.
3881 # -> { "execute": "block-set-write-threshold",
3882 # "arguments": { "node-name": "mydev",
3883 # "write-threshold": 17179869184 } }
3884 # <- { "return": {} }
3887 { 'command': 'block-set-write-threshold',
3888 'data': { 'node-name': 'str', 'write-threshold': 'uint64' } }
3891 # @x-blockdev-change:
3893 # Dynamically reconfigure the block driver state graph. It can be used
3894 # to add, remove, insert or replace a graph node. Currently only the
3895 # Quorum driver implements this feature to add or remove its child. This
3896 # is useful to fix a broken quorum child.
3898 # If @node is specified, it will be inserted under @parent. @child
3899 # may not be specified in this case. If both @parent and @child are
3900 # specified but @node is not, @child will be detached from @parent.
3902 # @parent: the id or name of the parent node.
3904 # @child: the name of a child under the given parent node.
3906 # @node: the name of the node that will be added.
3908 # Note: this command is experimental, and its API is not stable. It
3909 # does not support all kinds of operations, all kinds of children, nor
3910 # all block drivers.
3912 # Warning: The data in a new quorum child MUST be consistent with that of
3913 # the rest of the array.
3919 # 1. Add a new node to a quorum
3920 # -> { "execute": "blockdev-add",
3923 # "node-name": "new_node",
3924 # "file": { "driver": "file",
3925 # "filename": "test.raw" } } }
3926 # <- { "return": {} }
3927 # -> { "execute": "x-blockdev-change",
3928 # "arguments": { "parent": "disk1",
3929 # "node": "new_node" } }
3930 # <- { "return": {} }
3932 # 2. Delete a quorum's node
3933 # -> { "execute": "x-blockdev-change",
3934 # "arguments": { "parent": "disk1",
3935 # "child": "children.1" } }
3936 # <- { "return": {} }
3939 { 'command': 'x-blockdev-change',
3940 'data' : { 'parent': 'str',