5 # == Block core (VM unrelated)
8 { 'include': 'common.json' }
9 { 'include': 'crypto.json' }
10 { 'include': 'job.json' }
11 { 'include': 'sockets.json' }
16 # @id: unique snapshot id
18 # @name: user chosen name
20 # @vm-state-size: size of the VM state
22 # @date-sec: UTC date of the snapshot in seconds
24 # @date-nsec: fractional part in nano seconds to be used with date-sec
26 # @vm-clock-sec: VM clock relative to boot in seconds
28 # @vm-clock-nsec: fractional part in nano seconds to be used with vm-clock-sec
30 # @icount: Current instruction count. Appears when execution record/replay
31 # is enabled. Used for "time-traveling" to match the moment
32 # in the recorded execution with the snapshots. This counter may
33 # be obtained through @query-replay command (since 5.2)
38 { 'struct': 'SnapshotInfo',
39 'data': { 'id': 'str', 'name': 'str', 'vm-state-size': 'int',
40 'date-sec': 'int', 'date-nsec': 'int',
41 'vm-clock-sec': 'int', 'vm-clock-nsec': 'int',
45 # @ImageInfoSpecificQCow2EncryptionBase:
47 # @format: The encryption format
51 { 'struct': 'ImageInfoSpecificQCow2EncryptionBase',
52 'data': { 'format': 'BlockdevQcow2EncryptionFormat'}}
55 # @ImageInfoSpecificQCow2Encryption:
59 { 'union': 'ImageInfoSpecificQCow2Encryption',
60 'base': 'ImageInfoSpecificQCow2EncryptionBase',
61 'discriminator': 'format',
62 'data': { 'luks': 'QCryptoBlockInfoLUKS' } }
65 # @ImageInfoSpecificQCow2:
67 # @compat: compatibility level
69 # @data-file: the filename of the external data file that is stored in the
70 # image and used as a default for opening the image (since: 4.0)
72 # @data-file-raw: True if the external data file must stay valid as a
73 # standalone (read-only) raw image without looking at qcow2
74 # metadata (since: 4.0)
76 # @extended-l2: true if the image has extended L2 entries; only valid for
77 # compat >= 1.1 (since 5.2)
79 # @lazy-refcounts: on or off; only valid for compat >= 1.1
81 # @corrupt: true if the image has been marked corrupt; only valid for
82 # compat >= 1.1 (since 2.2)
84 # @refcount-bits: width of a refcount entry in bits (since 2.3)
86 # @encrypt: details about encryption parameters; only set if image
87 # is encrypted (since 2.10)
89 # @bitmaps: A list of qcow2 bitmap details (since 4.0)
91 # @compression-type: the image cluster compression method (since 5.1)
95 { 'struct': 'ImageInfoSpecificQCow2',
99 '*data-file-raw': 'bool',
100 '*extended-l2': 'bool',
101 '*lazy-refcounts': 'bool',
103 'refcount-bits': 'int',
104 '*encrypt': 'ImageInfoSpecificQCow2Encryption',
105 '*bitmaps': ['Qcow2BitmapInfo'],
106 'compression-type': 'Qcow2CompressionType'
110 # @ImageInfoSpecificVmdk:
112 # @create-type: The create type of VMDK image
114 # @cid: Content id of image
116 # @parent-cid: Parent VMDK image's cid
118 # @extents: List of extent files
122 { 'struct': 'ImageInfoSpecificVmdk',
124 'create-type': 'str',
127 'extents': ['ImageInfo']
131 # @ImageInfoSpecific:
133 # A discriminated record of image format specific information structures.
137 { 'union': 'ImageInfoSpecific',
139 'qcow2': 'ImageInfoSpecificQCow2',
140 'vmdk': 'ImageInfoSpecificVmdk',
141 # If we need to add block driver specific parameters for
142 # LUKS in future, then we'll subclass QCryptoBlockInfoLUKS
143 # to define a ImageInfoSpecificLUKS
144 'luks': 'QCryptoBlockInfoLUKS'
150 # Information about a QEMU image file
152 # @filename: name of the image file
154 # @format: format of the image file
156 # @virtual-size: maximum capacity in bytes of the image
158 # @actual-size: actual size on disk in bytes of the image
160 # @dirty-flag: true if image is not cleanly closed
162 # @cluster-size: size of a cluster in bytes
164 # @encrypted: true if the image is encrypted
166 # @compressed: true if the image is compressed (Since 1.7)
168 # @backing-filename: name of the backing file
170 # @full-backing-filename: full path of the backing file
172 # @backing-filename-format: the format of the backing file
174 # @snapshots: list of VM snapshots
176 # @backing-image: info of the backing image (since 1.6)
178 # @format-specific: structure supplying additional format-specific
179 # information (since 1.7)
184 { 'struct': 'ImageInfo',
185 'data': {'filename': 'str', 'format': 'str', '*dirty-flag': 'bool',
186 '*actual-size': 'int', 'virtual-size': 'int',
187 '*cluster-size': 'int', '*encrypted': 'bool', '*compressed': 'bool',
188 '*backing-filename': 'str', '*full-backing-filename': 'str',
189 '*backing-filename-format': 'str', '*snapshots': ['SnapshotInfo'],
190 '*backing-image': 'ImageInfo',
191 '*format-specific': 'ImageInfoSpecific' } }
196 # Information about a QEMU image file check
198 # @filename: name of the image file checked
200 # @format: format of the image file checked
202 # @check-errors: number of unexpected errors occurred during check
204 # @image-end-offset: offset (in bytes) where the image ends, this
205 # field is present if the driver for the image format
208 # @corruptions: number of corruptions found during the check if any
210 # @leaks: number of leaks found during the check if any
212 # @corruptions-fixed: number of corruptions fixed during the check
215 # @leaks-fixed: number of leaks fixed during the check if any
217 # @total-clusters: total number of clusters, this field is present
218 # if the driver for the image format supports it
220 # @allocated-clusters: total number of allocated clusters, this
221 # field is present if the driver for the image format
224 # @fragmented-clusters: total number of fragmented clusters, this
225 # field is present if the driver for the image format
228 # @compressed-clusters: total number of compressed clusters, this
229 # field is present if the driver for the image format
235 { 'struct': 'ImageCheck',
236 'data': {'filename': 'str', 'format': 'str', 'check-errors': 'int',
237 '*image-end-offset': 'int', '*corruptions': 'int', '*leaks': 'int',
238 '*corruptions-fixed': 'int', '*leaks-fixed': 'int',
239 '*total-clusters': 'int', '*allocated-clusters': 'int',
240 '*fragmented-clusters': 'int', '*compressed-clusters': 'int' } }
245 # Mapping information from a virtual block range to a host file range
247 # @start: virtual (guest) offset of the first byte described by this
250 # @length: the number of bytes of the mapped virtual range
252 # @data: reading the image will actually read data from a file (in
253 # particular, if @offset is present this means that the sectors
254 # are not simply preallocated, but contain actual data in raw
257 # @zero: whether the virtual blocks read as zeroes
259 # @depth: number of layers (0 = top image, 1 = top image's backing
260 # file, ..., n - 1 = bottom image (where n is the number of
261 # images in the chain)) before reaching one for which the
264 # @offset: if present, the image file stores the data for this range
265 # in raw format at the given (host) offset
267 # @filename: filename that is referred to by @offset
272 { 'struct': 'MapEntry',
273 'data': {'start': 'int', 'length': 'int', 'data': 'bool',
274 'zero': 'bool', 'depth': 'int', '*offset': 'int',
275 '*filename': 'str' } }
278 # @BlockdevCacheInfo:
280 # Cache mode information for a block device
282 # @writeback: true if writeback mode is enabled
283 # @direct: true if the host page cache is bypassed (O_DIRECT)
284 # @no-flush: true if flush requests are ignored for the device
288 { 'struct': 'BlockdevCacheInfo',
289 'data': { 'writeback': 'bool',
291 'no-flush': 'bool' } }
296 # Information about the backing device for a block device.
298 # @file: the filename of the backing device
300 # @node-name: the name of the block driver node (Since 2.0)
302 # @ro: true if the backing device was open read-only
304 # @drv: the name of the block format used to open the backing device. As of
305 # 0.14 this can be: 'blkdebug', 'bochs', 'cloop', 'cow', 'dmg',
306 # 'file', 'file', 'ftp', 'ftps', 'host_cdrom', 'host_device',
307 # 'http', 'https', 'luks', 'nbd', 'parallels', 'qcow',
308 # 'qcow2', 'raw', 'vdi', 'vmdk', 'vpc', 'vvfat'
309 # 2.2: 'archipelago' added, 'cow' dropped
310 # 2.3: 'host_floppy' deprecated
311 # 2.5: 'host_floppy' dropped
313 # 2.8: 'replication' added, 'tftp' dropped
314 # 2.9: 'archipelago' dropped
316 # @backing_file: the name of the backing file (for copy-on-write)
318 # @backing_file_depth: number of files in the backing file chain (since: 1.2)
320 # @encrypted: true if the backing device is encrypted
322 # @detect_zeroes: detect and optimize zero writes (Since 2.1)
324 # @bps: total throughput limit in bytes per second is specified
326 # @bps_rd: read throughput limit in bytes per second is specified
328 # @bps_wr: write throughput limit in bytes per second is specified
330 # @iops: total I/O operations per second is specified
332 # @iops_rd: read I/O operations per second is specified
334 # @iops_wr: write I/O operations per second is specified
336 # @image: the info of image used (since: 1.6)
338 # @bps_max: total throughput limit during bursts,
339 # in bytes (Since 1.7)
341 # @bps_rd_max: read throughput limit during bursts,
342 # in bytes (Since 1.7)
344 # @bps_wr_max: write throughput limit during bursts,
345 # in bytes (Since 1.7)
347 # @iops_max: total I/O operations per second during bursts,
348 # in bytes (Since 1.7)
350 # @iops_rd_max: read I/O operations per second during bursts,
351 # in bytes (Since 1.7)
353 # @iops_wr_max: write I/O operations per second during bursts,
354 # in bytes (Since 1.7)
356 # @bps_max_length: maximum length of the @bps_max burst
357 # period, in seconds. (Since 2.6)
359 # @bps_rd_max_length: maximum length of the @bps_rd_max
360 # burst period, in seconds. (Since 2.6)
362 # @bps_wr_max_length: maximum length of the @bps_wr_max
363 # burst period, in seconds. (Since 2.6)
365 # @iops_max_length: maximum length of the @iops burst
366 # period, in seconds. (Since 2.6)
368 # @iops_rd_max_length: maximum length of the @iops_rd_max
369 # burst period, in seconds. (Since 2.6)
371 # @iops_wr_max_length: maximum length of the @iops_wr_max
372 # burst period, in seconds. (Since 2.6)
374 # @iops_size: an I/O size in bytes (Since 1.7)
376 # @group: throttle group name (Since 2.4)
378 # @cache: the cache mode used for the block device (since: 2.3)
380 # @write_threshold: configured write threshold for the device.
381 # 0 if disabled. (Since 2.3)
383 # @dirty-bitmaps: dirty bitmaps information (only present if node
384 # has one or more dirty bitmaps) (Since 4.2)
389 { 'struct': 'BlockDeviceInfo',
390 'data': { 'file': 'str', '*node-name': 'str', 'ro': 'bool', 'drv': 'str',
391 '*backing_file': 'str', 'backing_file_depth': 'int',
393 'detect_zeroes': 'BlockdevDetectZeroesOptions',
394 'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int',
395 'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
396 'image': 'ImageInfo',
397 '*bps_max': 'int', '*bps_rd_max': 'int',
398 '*bps_wr_max': 'int', '*iops_max': 'int',
399 '*iops_rd_max': 'int', '*iops_wr_max': 'int',
400 '*bps_max_length': 'int', '*bps_rd_max_length': 'int',
401 '*bps_wr_max_length': 'int', '*iops_max_length': 'int',
402 '*iops_rd_max_length': 'int', '*iops_wr_max_length': 'int',
403 '*iops_size': 'int', '*group': 'str', 'cache': 'BlockdevCacheInfo',
404 'write_threshold': 'int', '*dirty-bitmaps': ['BlockDirtyInfo'] } }
407 # @BlockDeviceIoStatus:
409 # An enumeration of block device I/O status.
411 # @ok: The last I/O operation has succeeded
413 # @failed: The last I/O operation has failed
415 # @nospace: The last I/O operation has failed due to a no-space condition
419 { 'enum': 'BlockDeviceIoStatus', 'data': [ 'ok', 'failed', 'nospace' ] }
424 # Block dirty bitmap information.
426 # @name: the name of the dirty bitmap (Since 2.4)
428 # @count: number of dirty bytes according to the dirty bitmap
430 # @granularity: granularity of the dirty bitmap in bytes (since 1.4)
432 # @recording: true if the bitmap is recording new writes from the guest.
433 # Replaces `active` and `disabled` statuses. (since 4.0)
435 # @busy: true if the bitmap is in-use by some operation (NBD or jobs)
436 # and cannot be modified via QMP or used by another operation.
437 # Replaces `locked` and `frozen` statuses. (since 4.0)
439 # @persistent: true if the bitmap was stored on disk, is scheduled to be stored
440 # on disk, or both. (since 4.0)
442 # @inconsistent: true if this is a persistent bitmap that was improperly
443 # stored. Implies @persistent to be true; @recording and
444 # @busy to be false. This bitmap cannot be used. To remove
445 # it, use @block-dirty-bitmap-remove. (Since 4.0)
449 { 'struct': 'BlockDirtyInfo',
450 'data': {'*name': 'str', 'count': 'int', 'granularity': 'uint32',
451 'recording': 'bool', 'busy': 'bool',
452 'persistent': 'bool', '*inconsistent': 'bool' } }
455 # @Qcow2BitmapInfoFlags:
457 # An enumeration of flags that a bitmap can report to the user.
459 # @in-use: This flag is set by any process actively modifying the qcow2 file,
460 # and cleared when the updated bitmap is flushed to the qcow2 image.
461 # The presence of this flag in an offline image means that the bitmap
462 # was not saved correctly after its last usage, and may contain
465 # @auto: The bitmap must reflect all changes of the virtual disk by any
466 # application that would write to this qcow2 file.
470 { 'enum': 'Qcow2BitmapInfoFlags',
471 'data': ['in-use', 'auto'] }
476 # Qcow2 bitmap information.
478 # @name: the name of the bitmap
480 # @granularity: granularity of the bitmap in bytes
482 # @flags: flags of the bitmap
486 { 'struct': 'Qcow2BitmapInfo',
487 'data': {'name': 'str', 'granularity': 'uint32',
488 'flags': ['Qcow2BitmapInfoFlags'] } }
491 # @BlockLatencyHistogramInfo:
493 # Block latency histogram.
495 # @boundaries: list of interval boundary values in nanoseconds, all greater
496 # than zero and in ascending order.
497 # For example, the list [10, 50, 100] produces the following
498 # histogram intervals: [0, 10), [10, 50), [50, 100), [100, +inf).
500 # @bins: list of io request counts corresponding to histogram intervals.
501 # len(@bins) = len(@boundaries) + 1
502 # For the example above, @bins may be something like [3, 1, 5, 2],
503 # and corresponding histogram looks like:
512 # +------------------
517 { 'struct': 'BlockLatencyHistogramInfo',
518 'data': {'boundaries': ['uint64'], 'bins': ['uint64'] } }
523 # Block device information. This structure describes a virtual device and
524 # the backing device associated with it.
526 # @device: The device name associated with the virtual device.
528 # @qdev: The qdev ID, or if no ID is assigned, the QOM path of the block
529 # device. (since 2.10)
531 # @type: This field is returned only for compatibility reasons, it should
532 # not be used (always returns 'unknown')
534 # @removable: True if the device supports removable media.
536 # @locked: True if the guest has locked this device from having its media
539 # @tray_open: True if the device's tray is open
540 # (only present if it has a tray)
542 # @io-status: @BlockDeviceIoStatus. Only present if the device
543 # supports it and the VM is configured to stop on errors
544 # (supported device models: virtio-blk, IDE, SCSI except
547 # @inserted: @BlockDeviceInfo describing the device if media is
552 { 'struct': 'BlockInfo',
553 'data': {'device': 'str', '*qdev': 'str', 'type': 'str', 'removable': 'bool',
554 'locked': 'bool', '*inserted': 'BlockDeviceInfo',
555 '*tray_open': 'bool', '*io-status': 'BlockDeviceIoStatus' } }
560 # Image file size calculation information. This structure describes the size
561 # requirements for creating a new image file.
563 # The size requirements depend on the new image file format. File size always
564 # equals virtual disk size for the 'raw' format, even for sparse POSIX files.
565 # Compact formats such as 'qcow2' represent unallocated and zero regions
566 # efficiently so file size may be smaller than virtual disk size.
568 # The values are upper bounds that are guaranteed to fit the new image file.
569 # Subsequent modification, such as internal snapshot or further bitmap
570 # creation, may require additional space and is not covered here.
572 # @required: Size required for a new image file, in bytes, when copying just
573 # allocated guest-visible contents.
575 # @fully-allocated: Image file size, in bytes, once data has been written
576 # to all sectors, when copying just guest-visible contents.
578 # @bitmaps: Additional size required if all the top-level bitmap metadata
579 # in the source image were to be copied to the destination,
580 # present only when source and destination both support
581 # persistent bitmaps. (since 5.1)
585 { 'struct': 'BlockMeasureInfo',
586 'data': {'required': 'int', 'fully-allocated': 'int', '*bitmaps': 'int'} }
591 # Get a list of BlockInfo for all virtual block devices.
593 # Returns: a list of @BlockInfo describing each virtual block device. Filter
594 # nodes that were created implicitly are skipped over.
600 # -> { "execute": "query-block" }
605 # "device":"ide0-hd0",
612 # "file":"disks/test.qcow2",
613 # "backing_file_depth":1,
620 # "bps_max": 8000000,
627 # "detect_zeroes": "on",
628 # "write_threshold": 0,
630 # "filename":"disks/test.qcow2",
632 # "virtual-size":2048000,
633 # "backing_file":"base.qcow2",
634 # "full-backing-filename":"disks/base.qcow2",
635 # "backing-filename-format":"qcow2",
639 # "name": "snapshot1",
640 # "vm-state-size": 0,
641 # "date-sec": 10000200,
643 # "vm-clock-sec": 206,
644 # "vm-clock-nsec": 30
648 # "filename":"disks/base.qcow2",
650 # "virtual-size":2048000
654 # "qdev": "ide_disk",
659 # "device":"ide1-cd0",
662 # "qdev": "/machine/unattached/device[23]",
663 # "tray_open": false,
667 # "device":"floppy0",
670 # "qdev": "/machine/unattached/device[20]",
683 { 'command': 'query-block', 'returns': ['BlockInfo'] }
687 # @BlockDeviceTimedStats:
689 # Statistics of a block device during a given interval of time.
691 # @interval_length: Interval used for calculating the statistics,
694 # @min_rd_latency_ns: Minimum latency of read operations in the
695 # defined interval, in nanoseconds.
697 # @min_wr_latency_ns: Minimum latency of write operations in the
698 # defined interval, in nanoseconds.
700 # @min_flush_latency_ns: Minimum latency of flush operations in the
701 # defined interval, in nanoseconds.
703 # @max_rd_latency_ns: Maximum latency of read operations in the
704 # defined interval, in nanoseconds.
706 # @max_wr_latency_ns: Maximum latency of write operations in the
707 # defined interval, in nanoseconds.
709 # @max_flush_latency_ns: Maximum latency of flush operations in the
710 # defined interval, in nanoseconds.
712 # @avg_rd_latency_ns: Average latency of read operations in the
713 # defined interval, in nanoseconds.
715 # @avg_wr_latency_ns: Average latency of write operations in the
716 # defined interval, in nanoseconds.
718 # @avg_flush_latency_ns: Average latency of flush operations in the
719 # defined interval, in nanoseconds.
721 # @avg_rd_queue_depth: Average number of pending read operations
722 # in the defined interval.
724 # @avg_wr_queue_depth: Average number of pending write operations
725 # in the defined interval.
729 { 'struct': 'BlockDeviceTimedStats',
730 'data': { 'interval_length': 'int', 'min_rd_latency_ns': 'int',
731 'max_rd_latency_ns': 'int', 'avg_rd_latency_ns': 'int',
732 'min_wr_latency_ns': 'int', 'max_wr_latency_ns': 'int',
733 'avg_wr_latency_ns': 'int', 'min_flush_latency_ns': 'int',
734 'max_flush_latency_ns': 'int', 'avg_flush_latency_ns': 'int',
735 'avg_rd_queue_depth': 'number', 'avg_wr_queue_depth': 'number' } }
740 # Statistics of a virtual block device or a block backing device.
742 # @rd_bytes: The number of bytes read by the device.
744 # @wr_bytes: The number of bytes written by the device.
746 # @unmap_bytes: The number of bytes unmapped by the device (Since 4.2)
748 # @rd_operations: The number of read operations performed by the device.
750 # @wr_operations: The number of write operations performed by the device.
752 # @flush_operations: The number of cache flush operations performed by the
753 # device (since 0.15)
755 # @unmap_operations: The number of unmap operations performed by the device
758 # @rd_total_time_ns: Total time spent on reads in nanoseconds (since 0.15).
760 # @wr_total_time_ns: Total time spent on writes in nanoseconds (since 0.15).
762 # @flush_total_time_ns: Total time spent on cache flushes in nanoseconds
765 # @unmap_total_time_ns: Total time spent on unmap operations in nanoseconds
768 # @wr_highest_offset: The offset after the greatest byte written to the
769 # device. The intended use of this information is for
770 # growable sparse files (like qcow2) that are used on top
771 # of a physical device.
773 # @rd_merged: Number of read requests that have been merged into another
774 # request (Since 2.3).
776 # @wr_merged: Number of write requests that have been merged into another
777 # request (Since 2.3).
779 # @unmap_merged: Number of unmap requests that have been merged into another
780 # request (Since 4.2)
782 # @idle_time_ns: Time since the last I/O operation, in
783 # nanoseconds. If the field is absent it means that
784 # there haven't been any operations yet (Since 2.5).
786 # @failed_rd_operations: The number of failed read operations
787 # performed by the device (Since 2.5)
789 # @failed_wr_operations: The number of failed write operations
790 # performed by the device (Since 2.5)
792 # @failed_flush_operations: The number of failed flush operations
793 # performed by the device (Since 2.5)
795 # @failed_unmap_operations: The number of failed unmap operations performed
796 # by the device (Since 4.2)
798 # @invalid_rd_operations: The number of invalid read operations
799 # performed by the device (Since 2.5)
801 # @invalid_wr_operations: The number of invalid write operations
802 # performed by the device (Since 2.5)
804 # @invalid_flush_operations: The number of invalid flush operations
805 # performed by the device (Since 2.5)
807 # @invalid_unmap_operations: The number of invalid unmap operations performed
808 # by the device (Since 4.2)
810 # @account_invalid: Whether invalid operations are included in the
811 # last access statistics (Since 2.5)
813 # @account_failed: Whether failed operations are included in the
814 # latency and last access statistics (Since 2.5)
816 # @timed_stats: Statistics specific to the set of previously defined
817 # intervals of time (Since 2.5)
819 # @rd_latency_histogram: @BlockLatencyHistogramInfo. (Since 4.0)
821 # @wr_latency_histogram: @BlockLatencyHistogramInfo. (Since 4.0)
823 # @flush_latency_histogram: @BlockLatencyHistogramInfo. (Since 4.0)
827 { 'struct': 'BlockDeviceStats',
828 'data': {'rd_bytes': 'int', 'wr_bytes': 'int', 'unmap_bytes' : 'int',
829 'rd_operations': 'int', 'wr_operations': 'int',
830 'flush_operations': 'int', 'unmap_operations': 'int',
831 'rd_total_time_ns': 'int', 'wr_total_time_ns': 'int',
832 'flush_total_time_ns': 'int', 'unmap_total_time_ns': 'int',
833 'wr_highest_offset': 'int',
834 'rd_merged': 'int', 'wr_merged': 'int', 'unmap_merged': 'int',
835 '*idle_time_ns': 'int',
836 'failed_rd_operations': 'int', 'failed_wr_operations': 'int',
837 'failed_flush_operations': 'int', 'failed_unmap_operations': 'int',
838 'invalid_rd_operations': 'int', 'invalid_wr_operations': 'int',
839 'invalid_flush_operations': 'int', 'invalid_unmap_operations': 'int',
840 'account_invalid': 'bool', 'account_failed': 'bool',
841 'timed_stats': ['BlockDeviceTimedStats'],
842 '*rd_latency_histogram': 'BlockLatencyHistogramInfo',
843 '*wr_latency_histogram': 'BlockLatencyHistogramInfo',
844 '*flush_latency_histogram': 'BlockLatencyHistogramInfo' } }
847 # @BlockStatsSpecificFile:
849 # File driver statistics
851 # @discard-nb-ok: The number of successful discard operations performed by
854 # @discard-nb-failed: The number of failed discard operations performed by
857 # @discard-bytes-ok: The number of bytes discarded by the driver.
861 { 'struct': 'BlockStatsSpecificFile',
863 'discard-nb-ok': 'uint64',
864 'discard-nb-failed': 'uint64',
865 'discard-bytes-ok': 'uint64' } }
868 # @BlockStatsSpecificNvme:
870 # NVMe driver statistics
872 # @completion-errors: The number of completion errors.
874 # @aligned-accesses: The number of aligned accesses performed by
877 # @unaligned-accesses: The number of unaligned accesses performed by
882 { 'struct': 'BlockStatsSpecificNvme',
884 'completion-errors': 'uint64',
885 'aligned-accesses': 'uint64',
886 'unaligned-accesses': 'uint64' } }
889 # @BlockStatsSpecific:
891 # Block driver specific statistics
895 { 'union': 'BlockStatsSpecific',
896 'base': { 'driver': 'BlockdevDriver' },
897 'discriminator': 'driver',
899 'file': 'BlockStatsSpecificFile',
900 'host_device': 'BlockStatsSpecificFile',
901 'nvme': 'BlockStatsSpecificNvme' } }
906 # Statistics of a virtual block device or a block backing device.
908 # @device: If the stats are for a virtual block device, the name
909 # corresponding to the virtual block device.
911 # @node-name: The node name of the device. (Since 2.3)
913 # @qdev: The qdev ID, or if no ID is assigned, the QOM path of the block
914 # device. (since 3.0)
916 # @stats: A @BlockDeviceStats for the device.
918 # @driver-specific: Optional driver-specific stats. (Since 4.2)
920 # @parent: This describes the file block device if it has one.
921 # Contains recursively the statistics of the underlying
922 # protocol (e.g. the host file for a qcow2 image). If there is
923 # no underlying protocol, this field is omitted
925 # @backing: This describes the backing block device if it has one.
930 { 'struct': 'BlockStats',
931 'data': {'*device': 'str', '*qdev': 'str', '*node-name': 'str',
932 'stats': 'BlockDeviceStats',
933 '*driver-specific': 'BlockStatsSpecific',
934 '*parent': 'BlockStats',
935 '*backing': 'BlockStats'} }
940 # Query the @BlockStats for all virtual block devices.
942 # @query-nodes: If true, the command will query all the block nodes
943 # that have a node name, in a list which will include "parent"
944 # information, but not "backing".
945 # If false or omitted, the behavior is as before - query all the
946 # device backends, recursively including their "parent" and
947 # "backing". Filter nodes that were created implicitly are
948 # skipped over in this mode. (Since 2.3)
950 # Returns: A list of @BlockStats for each virtual block devices.
956 # -> { "execute": "query-blockstats" }
960 # "device":"ide0-hd0",
963 # "wr_highest_offset":3686448128,
964 # "wr_bytes":9786368,
965 # "wr_operations":751,
966 # "rd_bytes":122567168,
967 # "rd_operations":36772
968 # "wr_total_times_ns":313253456
969 # "rd_total_times_ns":3465673657
970 # "flush_total_times_ns":49653
971 # "flush_operations":61,
974 # "idle_time_ns":2953431879,
975 # "account_invalid":true,
976 # "account_failed":false
980 # "wr_highest_offset":2821110784,
981 # "wr_bytes":9786368,
982 # "wr_operations":692,
983 # "rd_bytes":122739200,
984 # "rd_operations":36604
985 # "flush_operations":51,
986 # "wr_total_times_ns":313253456
987 # "rd_total_times_ns":3465673657
988 # "flush_total_times_ns":49653,
991 # "idle_time_ns":2953431879,
992 # "account_invalid":true,
993 # "account_failed":false
995 # "qdev": "/machine/unattached/device[23]"
998 # "device":"ide1-cd0",
1000 # "wr_highest_offset":0,
1002 # "wr_operations":0,
1005 # "flush_operations":0,
1006 # "wr_total_times_ns":0
1007 # "rd_total_times_ns":0
1008 # "flush_total_times_ns":0,
1011 # "account_invalid":false,
1012 # "account_failed":false
1014 # "qdev": "/machine/unattached/device[24]"
1017 # "device":"floppy0",
1019 # "wr_highest_offset":0,
1021 # "wr_operations":0,
1024 # "flush_operations":0,
1025 # "wr_total_times_ns":0
1026 # "rd_total_times_ns":0
1027 # "flush_total_times_ns":0,
1030 # "account_invalid":false,
1031 # "account_failed":false
1033 # "qdev": "/machine/unattached/device[16]"
1038 # "wr_highest_offset":0,
1040 # "wr_operations":0,
1043 # "flush_operations":0,
1044 # "wr_total_times_ns":0
1045 # "rd_total_times_ns":0
1046 # "flush_total_times_ns":0,
1049 # "account_invalid":false,
1050 # "account_failed":false
1057 { 'command': 'query-blockstats',
1058 'data': { '*query-nodes': 'bool' },
1059 'returns': ['BlockStats'] }
1064 # An enumeration of possible behaviors for errors on I/O operations.
1065 # The exact meaning depends on whether the I/O was initiated by a guest
1068 # @report: for guest operations, report the error to the guest;
1069 # for jobs, cancel the job
1071 # @ignore: ignore the error, only report a QMP event (BLOCK_IO_ERROR
1072 # or BLOCK_JOB_ERROR). The backup, mirror and commit block jobs retry
1073 # the failing request later and may still complete successfully. The
1074 # stream block job continues to stream and will complete with an
1077 # @enospc: same as @stop on ENOSPC, same as @report otherwise.
1079 # @stop: for guest operations, stop the virtual machine;
1080 # for jobs, pause the job
1082 # @auto: inherit the error handling policy of the backend (since: 2.7)
1086 { 'enum': 'BlockdevOnError',
1087 'data': ['report', 'ignore', 'enospc', 'stop', 'auto'] }
1092 # An enumeration of possible behaviors for the initial synchronization
1093 # phase of storage mirroring.
1095 # @top: copies data in the topmost image to the destination
1097 # @full: copies data from all images to the destination
1099 # @none: only copy data written from now on
1101 # @incremental: only copy data described by the dirty bitmap. (since: 2.4)
1103 # @bitmap: only copy data described by the dirty bitmap. (since: 4.2)
1104 # Behavior on completion is determined by the BitmapSyncMode.
1108 { 'enum': 'MirrorSyncMode',
1109 'data': ['top', 'full', 'none', 'incremental', 'bitmap'] }
1114 # An enumeration of possible behaviors for the synchronization of a bitmap
1115 # when used for data copy operations.
1117 # @on-success: The bitmap is only synced when the operation is successful.
1118 # This is the behavior always used for 'INCREMENTAL' backups.
1120 # @never: The bitmap is never synchronized with the operation, and is
1121 # treated solely as a read-only manifest of blocks to copy.
1123 # @always: The bitmap is always synchronized with the operation,
1124 # regardless of whether or not the operation was successful.
1128 { 'enum': 'BitmapSyncMode',
1129 'data': ['on-success', 'never', 'always'] }
1134 # An enumeration whose values tell the mirror block job when to
1135 # trigger writes to the target.
1137 # @background: copy data in background only.
1139 # @write-blocking: when data is written to the source, write it
1140 # (synchronously) to the target as well. In
1141 # addition, data is copied in background just like in
1146 { 'enum': 'MirrorCopyMode',
1147 'data': ['background', 'write-blocking'] }
1152 # Information about a long-running block device operation.
1154 # @type: the job type ('stream' for image streaming)
1156 # @device: The job identifier. Originally the device name but other
1157 # values are allowed since QEMU 2.7
1159 # @len: Estimated @offset value at the completion of the job. This value can
1160 # arbitrarily change while the job is running, in both directions.
1162 # @offset: Progress made until now. The unit is arbitrary and the value can
1163 # only meaningfully be used for the ratio of @offset to @len. The
1164 # value is monotonically increasing.
1166 # @busy: false if the job is known to be in a quiescent state, with
1167 # no pending I/O. Since 1.3.
1169 # @paused: whether the job is paused or, if @busy is true, will
1170 # pause itself as soon as possible. Since 1.3.
1172 # @speed: the rate limit, bytes per second
1174 # @io-status: the status of the job (since 1.3)
1176 # @ready: true if the job may be completed (since 2.2)
1178 # @status: Current job state/status (since 2.12)
1180 # @auto-finalize: Job will finalize itself when PENDING, moving to
1181 # the CONCLUDED state. (since 2.12)
1183 # @auto-dismiss: Job will dismiss itself when CONCLUDED, moving to the NULL
1184 # state and disappearing from the query list. (since 2.12)
1186 # @error: Error information if the job did not complete successfully.
1187 # Not set if the job completed successfully. (since 2.12.1)
1191 { 'struct': 'BlockJobInfo',
1192 'data': {'type': 'str', 'device': 'str', 'len': 'int',
1193 'offset': 'int', 'busy': 'bool', 'paused': 'bool', 'speed': 'int',
1194 'io-status': 'BlockDeviceIoStatus', 'ready': 'bool',
1195 'status': 'JobStatus',
1196 'auto-finalize': 'bool', 'auto-dismiss': 'bool',
1200 # @query-block-jobs:
1202 # Return information about long-running block device operations.
1204 # Returns: a list of @BlockJobInfo for each active block job
1208 { 'command': 'query-block-jobs', 'returns': ['BlockJobInfo'] }
1213 # This command sets the password of a block device that has not been open
1214 # with a password and requires one.
1216 # This command is now obsolete and will always return an error since 2.10
1219 { 'command': 'block_passwd',
1220 'data': { '*device': 'str',
1221 '*node-name': 'str',
1222 'password': 'str' } }
1227 # Resize a block image while a guest is running.
1229 # Either @device or @node-name must be set but not both.
1231 # @device: the name of the device to get the image resized
1233 # @node-name: graph node name to get the image resized (Since 2.0)
1235 # @size: new image size in bytes
1237 # Returns: - nothing on success
1238 # - If @device is not a valid block device, DeviceNotFound
1244 # -> { "execute": "block_resize",
1245 # "arguments": { "device": "scratch", "size": 1073741824 } }
1246 # <- { "return": {} }
1249 { 'command': 'block_resize',
1250 'data': { '*device': 'str',
1251 '*node-name': 'str',
1258 # An enumeration that tells QEMU how to set the backing file path in
1261 # @existing: QEMU should look for an existing image file.
1263 # @absolute-paths: QEMU should create a new image with absolute paths
1264 # for the backing file. If there is no backing file available, the new
1265 # image will not be backed either.
1269 { 'enum': 'NewImageMode',
1270 'data': [ 'existing', 'absolute-paths' ] }
1273 # @BlockdevSnapshotSync:
1275 # Either @device or @node-name must be set but not both.
1277 # @device: the name of the device to take a snapshot of.
1279 # @node-name: graph node name to generate the snapshot from (Since 2.0)
1281 # @snapshot-file: the target of the new overlay image. If the file
1282 # exists, or if it is a device, the overlay will be created in the
1283 # existing file/device. Otherwise, a new file will be created.
1285 # @snapshot-node-name: the graph node name of the new image (Since 2.0)
1287 # @format: the format of the overlay image, default is 'qcow2'.
1289 # @mode: whether and how QEMU should create a new image, default is
1292 { 'struct': 'BlockdevSnapshotSync',
1293 'data': { '*device': 'str', '*node-name': 'str',
1294 'snapshot-file': 'str', '*snapshot-node-name': 'str',
1295 '*format': 'str', '*mode': 'NewImageMode' } }
1298 # @BlockdevSnapshot:
1300 # @node: device or node name that will have a snapshot taken.
1302 # @overlay: reference to the existing block device that will become
1303 # the overlay of @node, as part of taking the snapshot.
1304 # It must not have a current backing file (this can be
1305 # achieved by passing "backing": null to blockdev-add).
1309 { 'struct': 'BlockdevSnapshot',
1310 'data': { 'node': 'str', 'overlay': 'str' } }
1315 # Optional parameters for backup. These parameters don't affect
1316 # functionality, but may significantly affect performance.
1318 # @use-copy-range: Use copy offloading. Default false.
1320 # @max-workers: Maximum number of parallel requests for the sustained background
1321 # copying process. Doesn't influence copy-before-write operations.
1324 # @max-chunk: Maximum request length for the sustained background copying
1325 # process. Doesn't influence copy-before-write operations.
1326 # 0 means unlimited. If max-chunk is non-zero then it should not be
1327 # less than job cluster size which is calculated as maximum of
1328 # target image cluster size and 64k. Default 0.
1332 { 'struct': 'BackupPerf',
1333 'data': { '*use-copy-range': 'bool',
1334 '*max-workers': 'int', '*max-chunk': 'int64' } }
1339 # @job-id: identifier for the newly-created block job. If
1340 # omitted, the device name will be used. (Since 2.7)
1342 # @device: the device name or node-name of a root node which should be copied.
1344 # @sync: what parts of the disk image should be copied to the destination
1345 # (all the disk, only the sectors allocated in the topmost image, from a
1346 # dirty bitmap, or only new I/O).
1348 # @speed: the maximum speed, in bytes per second. The default is 0,
1351 # @bitmap: The name of a dirty bitmap to use.
1352 # Must be present if sync is "bitmap" or "incremental".
1353 # Can be present if sync is "full" or "top".
1354 # Must not be present otherwise.
1355 # (Since 2.4 (drive-backup), 3.1 (blockdev-backup))
1357 # @bitmap-mode: Specifies the type of data the bitmap should contain after
1358 # the operation concludes.
1359 # Must be present if a bitmap was provided,
1360 # Must NOT be present otherwise. (Since 4.2)
1362 # @compress: true to compress data, if the target format supports it.
1363 # (default: false) (since 2.8)
1365 # @on-source-error: the action to take on an error on the source,
1366 # default 'report'. 'stop' and 'enospc' can only be used
1367 # if the block device supports io-status (see BlockInfo).
1369 # @on-target-error: the action to take on an error on the target,
1370 # default 'report' (no limitations, since this applies to
1371 # a different block device than @device).
1373 # @auto-finalize: When false, this job will wait in a PENDING state after it has
1374 # finished its work, waiting for @block-job-finalize before
1375 # making any block graph changes.
1376 # When true, this job will automatically
1377 # perform its abort or commit actions.
1378 # Defaults to true. (Since 2.12)
1380 # @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
1381 # has completely ceased all work, and awaits @block-job-dismiss.
1382 # When true, this job will automatically disappear from the query
1383 # list without user intervention.
1384 # Defaults to true. (Since 2.12)
1386 # @filter-node-name: the node name that should be assigned to the
1387 # filter driver that the backup job inserts into the graph
1388 # above node specified by @drive. If this option is not given,
1389 # a node name is autogenerated. (Since: 4.2)
1391 # @x-perf: Performance options. (Since 6.0)
1393 # Note: @on-source-error and @on-target-error only affect background
1394 # I/O. If an error occurs during a guest write request, the device's
1395 # rerror/werror actions will be used.
1399 { 'struct': 'BackupCommon',
1400 'data': { '*job-id': 'str', 'device': 'str',
1401 'sync': 'MirrorSyncMode', '*speed': 'int',
1402 '*bitmap': 'str', '*bitmap-mode': 'BitmapSyncMode',
1403 '*compress': 'bool',
1404 '*on-source-error': 'BlockdevOnError',
1405 '*on-target-error': 'BlockdevOnError',
1406 '*auto-finalize': 'bool', '*auto-dismiss': 'bool',
1407 '*filter-node-name': 'str', '*x-perf': 'BackupPerf' } }
1412 # @target: the target of the new image. If the file exists, or if it
1413 # is a device, the existing file/device will be used as the new
1414 # destination. If it does not exist, a new file will be created.
1416 # @format: the format of the new destination, default is to
1417 # probe if @mode is 'existing', else the format of the source
1419 # @mode: whether and how QEMU should create a new image, default is
1424 { 'struct': 'DriveBackup',
1425 'base': 'BackupCommon',
1426 'data': { 'target': 'str',
1428 '*mode': 'NewImageMode' } }
1433 # @target: the device name or node-name of the backup target node.
1437 { 'struct': 'BlockdevBackup',
1438 'base': 'BackupCommon',
1439 'data': { 'target': 'str' } }
1442 # @blockdev-snapshot-sync:
1444 # Takes a synchronous snapshot of a block device.
1446 # For the arguments, see the documentation of BlockdevSnapshotSync.
1448 # Returns: - nothing on success
1449 # - If @device is not a valid block device, DeviceNotFound
1455 # -> { "execute": "blockdev-snapshot-sync",
1456 # "arguments": { "device": "ide-hd0",
1458 # "/some/place/my-image",
1459 # "format": "qcow2" } }
1460 # <- { "return": {} }
1463 { 'command': 'blockdev-snapshot-sync',
1464 'data': 'BlockdevSnapshotSync' }
1468 # @blockdev-snapshot:
1470 # Takes a snapshot of a block device.
1472 # Take a snapshot, by installing 'node' as the backing image of
1473 # 'overlay'. Additionally, if 'node' is associated with a block
1474 # device, the block device changes to using 'overlay' as its new active
1477 # For the arguments, see the documentation of BlockdevSnapshot.
1480 # @allow-write-only-overlay: If present, the check whether this operation is safe
1481 # was relaxed so that it can be used to change
1482 # backing file of a destination of a blockdev-mirror.
1489 # -> { "execute": "blockdev-add",
1490 # "arguments": { "driver": "qcow2",
1491 # "node-name": "node1534",
1492 # "file": { "driver": "file",
1493 # "filename": "hd1.qcow2" },
1494 # "backing": null } }
1496 # <- { "return": {} }
1498 # -> { "execute": "blockdev-snapshot",
1499 # "arguments": { "node": "ide-hd0",
1500 # "overlay": "node1534" } }
1501 # <- { "return": {} }
1504 { 'command': 'blockdev-snapshot',
1505 'data': 'BlockdevSnapshot',
1506 'features': [ 'allow-write-only-overlay' ] }
1509 # @change-backing-file:
1511 # Change the backing file in the image file metadata. This does not
1512 # cause QEMU to reopen the image file to reparse the backing filename
1513 # (it may, however, perform a reopen to change permissions from
1514 # r/o -> r/w -> r/o, if needed). The new backing file string is written
1515 # into the image file metadata, and the QEMU internal strings are
1518 # @image-node-name: The name of the block driver state node of the
1519 # image to modify. The "device" argument is used
1520 # to verify "image-node-name" is in the chain
1521 # described by "device".
1523 # @device: The device name or node-name of the root node that owns
1526 # @backing-file: The string to write as the backing file. This
1527 # string is not validated, so care should be taken
1528 # when specifying the string or the image chain may
1529 # not be able to be reopened again.
1531 # Returns: - Nothing on success
1532 # - If "device" does not exist or cannot be determined, DeviceNotFound
1536 { 'command': 'change-backing-file',
1537 'data': { 'device': 'str', 'image-node-name': 'str',
1538 'backing-file': 'str' } }
1543 # Live commit of data from overlay image nodes into backing nodes - i.e.,
1544 # writes data between 'top' and 'base' into 'base'.
1546 # If top == base, that is an error.
1547 # If top has no overlays on top of it, or if it is in use by a writer,
1548 # the job will not be completed by itself. The user needs to complete
1549 # the job with the block-job-complete command after getting the ready
1550 # event. (Since 2.0)
1552 # If the base image is smaller than top, then the base image will be
1553 # resized to be the same size as top. If top is smaller than the base
1554 # image, the base will not be truncated. If you want the base image
1555 # size to match the size of the smaller top, you can safely truncate
1556 # it yourself once the commit operation successfully completes.
1558 # @job-id: identifier for the newly-created block job. If
1559 # omitted, the device name will be used. (Since 2.7)
1561 # @device: the device name or node-name of a root node
1563 # @base-node: The node name of the backing image to write data into.
1564 # If not specified, this is the deepest backing image.
1567 # @base: Same as @base-node, except that it is a file name rather than a node
1568 # name. This must be the exact filename string that was used to open the
1569 # node; other strings, even if addressing the same file, are not
1572 # @top-node: The node name of the backing image within the image chain
1573 # which contains the topmost data to be committed down. If
1574 # not specified, this is the active layer. (since: 3.1)
1576 # @top: Same as @top-node, except that it is a file name rather than a node
1577 # name. This must be the exact filename string that was used to open the
1578 # node; other strings, even if addressing the same file, are not
1581 # @backing-file: The backing file string to write into the overlay
1582 # image of 'top'. If 'top' does not have an overlay
1583 # image, or if 'top' is in use by a writer, specifying
1584 # a backing file string is an error.
1586 # This filename is not validated. If a pathname string
1587 # is such that it cannot be resolved by QEMU, that
1588 # means that subsequent QMP or HMP commands must use
1589 # node-names for the image in question, as filename
1590 # lookup methods will fail.
1592 # If not specified, QEMU will automatically determine
1593 # the backing file string to use, or error out if
1594 # there is no obvious choice. Care should be taken
1595 # when specifying the string, to specify a valid
1596 # filename or protocol.
1599 # @speed: the maximum speed, in bytes per second
1601 # @on-error: the action to take on an error. 'ignore' means that the request
1602 # should be retried. (default: report; Since: 5.0)
1604 # @filter-node-name: the node name that should be assigned to the
1605 # filter driver that the commit job inserts into the graph
1606 # above @top. If this option is not given, a node name is
1607 # autogenerated. (Since: 2.9)
1609 # @auto-finalize: When false, this job will wait in a PENDING state after it has
1610 # finished its work, waiting for @block-job-finalize before
1611 # making any block graph changes.
1612 # When true, this job will automatically
1613 # perform its abort or commit actions.
1614 # Defaults to true. (Since 3.1)
1616 # @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
1617 # has completely ceased all work, and awaits @block-job-dismiss.
1618 # When true, this job will automatically disappear from the query
1619 # list without user intervention.
1620 # Defaults to true. (Since 3.1)
1623 # @deprecated: Members @base and @top are deprecated. Use @base-node
1624 # and @top-node instead.
1626 # Returns: - Nothing on success
1627 # - If @device does not exist, DeviceNotFound
1628 # - Any other error returns a GenericError.
1634 # -> { "execute": "block-commit",
1635 # "arguments": { "device": "virtio0",
1636 # "top": "/tmp/snap1.qcow2" } }
1637 # <- { "return": {} }
1640 { 'command': 'block-commit',
1641 'data': { '*job-id': 'str', 'device': 'str', '*base-node': 'str',
1642 '*base': { 'type': 'str', 'features': [ 'deprecated' ] },
1644 '*top': { 'type': 'str', 'features': [ 'deprecated' ] },
1645 '*backing-file': 'str', '*speed': 'int',
1646 '*on-error': 'BlockdevOnError',
1647 '*filter-node-name': 'str',
1648 '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
1653 # Start a point-in-time copy of a block device to a new destination. The
1654 # status of ongoing drive-backup operations can be checked with
1655 # query-block-jobs where the BlockJobInfo.type field has the value 'backup'.
1656 # The operation can be stopped before it has completed using the
1657 # block-job-cancel command.
1659 # Returns: - nothing on success
1660 # - If @device is not a valid block device, GenericError
1666 # -> { "execute": "drive-backup",
1667 # "arguments": { "device": "drive0",
1669 # "target": "backup.img" } }
1670 # <- { "return": {} }
1673 { 'command': 'drive-backup', 'boxed': true,
1674 'data': 'DriveBackup' }
1679 # Start a point-in-time copy of a block device to a new destination. The
1680 # status of ongoing blockdev-backup operations can be checked with
1681 # query-block-jobs where the BlockJobInfo.type field has the value 'backup'.
1682 # The operation can be stopped before it has completed using the
1683 # block-job-cancel command.
1685 # Returns: - nothing on success
1686 # - If @device is not a valid block device, DeviceNotFound
1691 # -> { "execute": "blockdev-backup",
1692 # "arguments": { "device": "src-id",
1694 # "target": "tgt-id" } }
1695 # <- { "return": {} }
1698 { 'command': 'blockdev-backup', 'boxed': true,
1699 'data': 'BlockdevBackup' }
1703 # @query-named-block-nodes:
1705 # Get the named block driver list
1707 # @flat: Omit the nested data about backing image ("backing-image" key) if true.
1708 # Default is false (Since 5.0)
1710 # Returns: the list of BlockDeviceInfo
1716 # -> { "execute": "query-named-block-nodes" }
1717 # <- { "return": [ { "ro":false,
1719 # "encrypted":false,
1720 # "file":"disks/test.qcow2",
1721 # "node-name": "my-node",
1722 # "backing_file_depth":1,
1729 # "bps_max": 8000000,
1736 # "write_threshold": 0,
1738 # "filename":"disks/test.qcow2",
1740 # "virtual-size":2048000,
1741 # "backing_file":"base.qcow2",
1742 # "full-backing-filename":"disks/base.qcow2",
1743 # "backing-filename-format":"qcow2",
1747 # "name": "snapshot1",
1748 # "vm-state-size": 0,
1749 # "date-sec": 10000200,
1751 # "vm-clock-sec": 206,
1752 # "vm-clock-nsec": 30
1756 # "filename":"disks/base.qcow2",
1758 # "virtual-size":2048000
1763 { 'command': 'query-named-block-nodes',
1764 'returns': [ 'BlockDeviceInfo' ],
1765 'data': { '*flat': 'bool' } }
1768 # @XDbgBlockGraphNodeType:
1770 # @block-backend: corresponds to BlockBackend
1772 # @block-job: corresponds to BlockJob
1774 # @block-driver: corresponds to BlockDriverState
1778 { 'enum': 'XDbgBlockGraphNodeType',
1779 'data': [ 'block-backend', 'block-job', 'block-driver' ] }
1782 # @XDbgBlockGraphNode:
1784 # @id: Block graph node identifier. This @id is generated only for
1785 # x-debug-query-block-graph and does not relate to any other identifiers in
1788 # @type: Type of graph node. Can be one of block-backend, block-job or
1789 # block-driver-state.
1791 # @name: Human readable name of the node. Corresponds to node-name for
1792 # block-driver-state nodes; is not guaranteed to be unique in the whole
1793 # graph (with block-jobs and block-backends).
1797 { 'struct': 'XDbgBlockGraphNode',
1798 'data': { 'id': 'uint64', 'type': 'XDbgBlockGraphNodeType', 'name': 'str' } }
1803 # Enum of base block permissions.
1805 # @consistent-read: A user that has the "permission" of consistent reads is
1806 # guaranteed that their view of the contents of the block
1807 # device is complete and self-consistent, representing the
1808 # contents of a disk at a specific point.
1809 # For most block devices (including their backing files) this
1810 # is true, but the property cannot be maintained in a few
1811 # situations like for intermediate nodes of a commit block
1814 # @write: This permission is required to change the visible disk contents.
1816 # @write-unchanged: This permission (which is weaker than BLK_PERM_WRITE) is
1817 # both enough and required for writes to the block node when
1818 # the caller promises that the visible disk content doesn't
1820 # As the BLK_PERM_WRITE permission is strictly stronger,
1821 # either is sufficient to perform an unchanging write.
1823 # @resize: This permission is required to change the size of a block node.
1825 # @graph-mod: This permission is required to change the node that this
1826 # BdrvChild points to.
1830 { 'enum': 'BlockPermission',
1831 'data': [ 'consistent-read', 'write', 'write-unchanged', 'resize',
1834 # @XDbgBlockGraphEdge:
1836 # Block Graph edge description for x-debug-query-block-graph.
1838 # @parent: parent id
1842 # @name: name of the relation (examples are 'file' and 'backing')
1844 # @perm: granted permissions for the parent operating on the child
1846 # @shared-perm: permissions that can still be granted to other users of the
1847 # child while it is still attached to this parent
1851 { 'struct': 'XDbgBlockGraphEdge',
1852 'data': { 'parent': 'uint64', 'child': 'uint64',
1853 'name': 'str', 'perm': [ 'BlockPermission' ],
1854 'shared-perm': [ 'BlockPermission' ] } }
1859 # Block Graph - list of nodes and list of edges.
1863 { 'struct': 'XDbgBlockGraph',
1864 'data': { 'nodes': ['XDbgBlockGraphNode'], 'edges': ['XDbgBlockGraphEdge'] } }
1867 # @x-debug-query-block-graph:
1869 # Get the block graph.
1873 { 'command': 'x-debug-query-block-graph', 'returns': 'XDbgBlockGraph' }
1878 # Start mirroring a block device's writes to a new destination. target
1879 # specifies the target of the new image. If the file exists, or if it
1880 # is a device, it will be used as the new destination for writes. If
1881 # it does not exist, a new file will be created. format specifies the
1882 # format of the mirror image, default is to probe if mode='existing',
1883 # else the format of the source.
1885 # Returns: - nothing on success
1886 # - If @device is not a valid block device, GenericError
1892 # -> { "execute": "drive-mirror",
1893 # "arguments": { "device": "ide-hd0",
1894 # "target": "/some/place/my-image",
1896 # "format": "qcow2" } }
1897 # <- { "return": {} }
1900 { 'command': 'drive-mirror', 'boxed': true,
1901 'data': 'DriveMirror' }
1906 # A set of parameters describing drive mirror setup.
1908 # @job-id: identifier for the newly-created block job. If
1909 # omitted, the device name will be used. (Since 2.7)
1911 # @device: the device name or node-name of a root node whose writes should be
1914 # @target: the target of the new image. If the file exists, or if it
1915 # is a device, the existing file/device will be used as the new
1916 # destination. If it does not exist, a new file will be created.
1918 # @format: the format of the new destination, default is to
1919 # probe if @mode is 'existing', else the format of the source
1921 # @node-name: the new block driver state node name in the graph
1924 # @replaces: with sync=full graph node name to be replaced by the new
1925 # image when a whole image copy is done. This can be used to repair
1926 # broken Quorum files. By default, @device is replaced, although
1927 # implicitly created filters on it are kept. (Since 2.1)
1929 # @mode: whether and how QEMU should create a new image, default is
1932 # @speed: the maximum speed, in bytes per second
1934 # @sync: what parts of the disk image should be copied to the destination
1935 # (all the disk, only the sectors allocated in the topmost image, or
1938 # @granularity: granularity of the dirty bitmap, default is 64K
1939 # if the image format doesn't have clusters, 4K if the clusters
1940 # are smaller than that, else the cluster size. Must be a
1941 # power of 2 between 512 and 64M (since 1.4).
1943 # @buf-size: maximum amount of data in flight from source to
1944 # target (since 1.4).
1946 # @on-source-error: the action to take on an error on the source,
1947 # default 'report'. 'stop' and 'enospc' can only be used
1948 # if the block device supports io-status (see BlockInfo).
1950 # @on-target-error: the action to take on an error on the target,
1951 # default 'report' (no limitations, since this applies to
1952 # a different block device than @device).
1953 # @unmap: Whether to try to unmap target sectors where source has
1954 # only zero. If true, and target unallocated sectors will read as zero,
1955 # target image sectors will be unmapped; otherwise, zeroes will be
1956 # written. Both will result in identical contents.
1957 # Default is true. (Since 2.4)
1959 # @copy-mode: when to copy data to the destination; defaults to 'background'
1962 # @auto-finalize: When false, this job will wait in a PENDING state after it has
1963 # finished its work, waiting for @block-job-finalize before
1964 # making any block graph changes.
1965 # When true, this job will automatically
1966 # perform its abort or commit actions.
1967 # Defaults to true. (Since 3.1)
1969 # @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
1970 # has completely ceased all work, and awaits @block-job-dismiss.
1971 # When true, this job will automatically disappear from the query
1972 # list without user intervention.
1973 # Defaults to true. (Since 3.1)
1976 { 'struct': 'DriveMirror',
1977 'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
1978 '*format': 'str', '*node-name': 'str', '*replaces': 'str',
1979 'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
1980 '*speed': 'int', '*granularity': 'uint32',
1981 '*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
1982 '*on-target-error': 'BlockdevOnError',
1983 '*unmap': 'bool', '*copy-mode': 'MirrorCopyMode',
1984 '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
1987 # @BlockDirtyBitmap:
1989 # @node: name of device/node which the bitmap is tracking
1991 # @name: name of the dirty bitmap
1995 { 'struct': 'BlockDirtyBitmap',
1996 'data': { 'node': 'str', 'name': 'str' } }
1999 # @BlockDirtyBitmapAdd:
2001 # @node: name of device/node which the bitmap is tracking
2003 # @name: name of the dirty bitmap (must be less than 1024 bytes)
2005 # @granularity: the bitmap granularity, default is 64k for
2006 # block-dirty-bitmap-add
2008 # @persistent: the bitmap is persistent, i.e. it will be saved to the
2009 # corresponding block device image file on its close. For now only
2010 # Qcow2 disks support persistent bitmaps. Default is false for
2011 # block-dirty-bitmap-add. (Since: 2.10)
2013 # @disabled: the bitmap is created in the disabled state, which means that
2014 # it will not track drive changes. The bitmap may be enabled with
2015 # block-dirty-bitmap-enable. Default is false. (Since: 4.0)
2019 { 'struct': 'BlockDirtyBitmapAdd',
2020 'data': { 'node': 'str', 'name': 'str', '*granularity': 'uint32',
2021 '*persistent': 'bool', '*disabled': 'bool' } }
2024 # @BlockDirtyBitmapMergeSource:
2026 # @local: name of the bitmap, attached to the same node as target bitmap.
2028 # @external: bitmap with specified node
2032 { 'alternate': 'BlockDirtyBitmapMergeSource',
2033 'data': { 'local': 'str',
2034 'external': 'BlockDirtyBitmap' } }
2037 # @BlockDirtyBitmapMerge:
2039 # @node: name of device/node which the @target bitmap is tracking
2041 # @target: name of the destination dirty bitmap
2043 # @bitmaps: name(s) of the source dirty bitmap(s) at @node and/or fully
2044 # specified BlockDirtyBitmap elements. The latter are supported
2049 { 'struct': 'BlockDirtyBitmapMerge',
2050 'data': { 'node': 'str', 'target': 'str',
2051 'bitmaps': ['BlockDirtyBitmapMergeSource'] } }
2054 # @block-dirty-bitmap-add:
2056 # Create a dirty bitmap with a name on the node, and start tracking the writes.
2058 # Returns: - nothing on success
2059 # - If @node is not a valid block device or node, DeviceNotFound
2060 # - If @name is already taken, GenericError with an explanation
2066 # -> { "execute": "block-dirty-bitmap-add",
2067 # "arguments": { "node": "drive0", "name": "bitmap0" } }
2068 # <- { "return": {} }
2071 { 'command': 'block-dirty-bitmap-add',
2072 'data': 'BlockDirtyBitmapAdd' }
2075 # @block-dirty-bitmap-remove:
2077 # Stop write tracking and remove the dirty bitmap that was created
2078 # with block-dirty-bitmap-add. If the bitmap is persistent, remove it from its
2081 # Returns: - nothing on success
2082 # - If @node is not a valid block device or node, DeviceNotFound
2083 # - If @name is not found, GenericError with an explanation
2084 # - if @name is frozen by an operation, GenericError
2090 # -> { "execute": "block-dirty-bitmap-remove",
2091 # "arguments": { "node": "drive0", "name": "bitmap0" } }
2092 # <- { "return": {} }
2095 { 'command': 'block-dirty-bitmap-remove',
2096 'data': 'BlockDirtyBitmap' }
2099 # @block-dirty-bitmap-clear:
2101 # Clear (reset) a dirty bitmap on the device, so that an incremental
2102 # backup from this point in time forward will only backup clusters
2103 # modified after this clear operation.
2105 # Returns: - nothing on success
2106 # - If @node is not a valid block device, DeviceNotFound
2107 # - If @name is not found, GenericError with an explanation
2113 # -> { "execute": "block-dirty-bitmap-clear",
2114 # "arguments": { "node": "drive0", "name": "bitmap0" } }
2115 # <- { "return": {} }
2118 { 'command': 'block-dirty-bitmap-clear',
2119 'data': 'BlockDirtyBitmap' }
2122 # @block-dirty-bitmap-enable:
2124 # Enables a dirty bitmap so that it will begin tracking disk changes.
2126 # Returns: - nothing on success
2127 # - If @node is not a valid block device, DeviceNotFound
2128 # - If @name is not found, GenericError with an explanation
2134 # -> { "execute": "block-dirty-bitmap-enable",
2135 # "arguments": { "node": "drive0", "name": "bitmap0" } }
2136 # <- { "return": {} }
2139 { 'command': 'block-dirty-bitmap-enable',
2140 'data': 'BlockDirtyBitmap' }
2143 # @block-dirty-bitmap-disable:
2145 # Disables a dirty bitmap so that it will stop tracking disk changes.
2147 # Returns: - nothing on success
2148 # - If @node is not a valid block device, DeviceNotFound
2149 # - If @name is not found, GenericError with an explanation
2155 # -> { "execute": "block-dirty-bitmap-disable",
2156 # "arguments": { "node": "drive0", "name": "bitmap0" } }
2157 # <- { "return": {} }
2160 { 'command': 'block-dirty-bitmap-disable',
2161 'data': 'BlockDirtyBitmap' }
2164 # @block-dirty-bitmap-merge:
2166 # Merge dirty bitmaps listed in @bitmaps to the @target dirty bitmap.
2167 # Dirty bitmaps in @bitmaps will be unchanged, except if it also appears
2168 # as the @target bitmap. Any bits already set in @target will still be
2169 # set after the merge, i.e., this operation does not clear the target.
2170 # On error, @target is unchanged.
2172 # The resulting bitmap will count as dirty any clusters that were dirty in any
2173 # of the source bitmaps. This can be used to achieve backup checkpoints, or in
2174 # simpler usages, to copy bitmaps.
2176 # Returns: - nothing on success
2177 # - If @node is not a valid block device, DeviceNotFound
2178 # - If any bitmap in @bitmaps or @target is not found, GenericError
2179 # - If any of the bitmaps have different sizes or granularities,
2186 # -> { "execute": "block-dirty-bitmap-merge",
2187 # "arguments": { "node": "drive0", "target": "bitmap0",
2188 # "bitmaps": ["bitmap1"] } }
2189 # <- { "return": {} }
2192 { 'command': 'block-dirty-bitmap-merge',
2193 'data': 'BlockDirtyBitmapMerge' }
2196 # @BlockDirtyBitmapSha256:
2198 # SHA256 hash of dirty bitmap data
2200 # @sha256: ASCII representation of SHA256 bitmap hash
2204 { 'struct': 'BlockDirtyBitmapSha256',
2205 'data': {'sha256': 'str'} }
2208 # @x-debug-block-dirty-bitmap-sha256:
2210 # Get bitmap SHA256.
2212 # Returns: - BlockDirtyBitmapSha256 on success
2213 # - If @node is not a valid block device, DeviceNotFound
2214 # - If @name is not found or if hashing has failed, GenericError with an
2219 { 'command': 'x-debug-block-dirty-bitmap-sha256',
2220 'data': 'BlockDirtyBitmap', 'returns': 'BlockDirtyBitmapSha256' }
2225 # Start mirroring a block device's writes to a new destination.
2227 # @job-id: identifier for the newly-created block job. If
2228 # omitted, the device name will be used. (Since 2.7)
2230 # @device: The device name or node-name of a root node whose writes should be
2233 # @target: the id or node-name of the block device to mirror to. This mustn't be
2234 # attached to guest.
2236 # @replaces: with sync=full graph node name to be replaced by the new
2237 # image when a whole image copy is done. This can be used to repair
2238 # broken Quorum files. By default, @device is replaced, although
2239 # implicitly created filters on it are kept.
2241 # @speed: the maximum speed, in bytes per second
2243 # @sync: what parts of the disk image should be copied to the destination
2244 # (all the disk, only the sectors allocated in the topmost image, or
2247 # @granularity: granularity of the dirty bitmap, default is 64K
2248 # if the image format doesn't have clusters, 4K if the clusters
2249 # are smaller than that, else the cluster size. Must be a
2250 # power of 2 between 512 and 64M
2252 # @buf-size: maximum amount of data in flight from source to
2255 # @on-source-error: the action to take on an error on the source,
2256 # default 'report'. 'stop' and 'enospc' can only be used
2257 # if the block device supports io-status (see BlockInfo).
2259 # @on-target-error: the action to take on an error on the target,
2260 # default 'report' (no limitations, since this applies to
2261 # a different block device than @device).
2263 # @filter-node-name: the node name that should be assigned to the
2264 # filter driver that the mirror job inserts into the graph
2265 # above @device. If this option is not given, a node name is
2266 # autogenerated. (Since: 2.9)
2268 # @copy-mode: when to copy data to the destination; defaults to 'background'
2271 # @auto-finalize: When false, this job will wait in a PENDING state after it has
2272 # finished its work, waiting for @block-job-finalize before
2273 # making any block graph changes.
2274 # When true, this job will automatically
2275 # perform its abort or commit actions.
2276 # Defaults to true. (Since 3.1)
2278 # @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
2279 # has completely ceased all work, and awaits @block-job-dismiss.
2280 # When true, this job will automatically disappear from the query
2281 # list without user intervention.
2282 # Defaults to true. (Since 3.1)
2283 # Returns: nothing on success.
2289 # -> { "execute": "blockdev-mirror",
2290 # "arguments": { "device": "ide-hd0",
2291 # "target": "target0",
2292 # "sync": "full" } }
2293 # <- { "return": {} }
2296 { 'command': 'blockdev-mirror',
2297 'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
2299 'sync': 'MirrorSyncMode',
2300 '*speed': 'int', '*granularity': 'uint32',
2301 '*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
2302 '*on-target-error': 'BlockdevOnError',
2303 '*filter-node-name': 'str',
2304 '*copy-mode': 'MirrorCopyMode',
2305 '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
2310 # A set of parameters describing block throttling.
2312 # @device: Block device name
2314 # @id: The name or QOM path of the guest device (since: 2.8)
2316 # @bps: total throughput limit in bytes per second
2318 # @bps_rd: read throughput limit in bytes per second
2320 # @bps_wr: write throughput limit in bytes per second
2322 # @iops: total I/O operations per second
2324 # @iops_rd: read I/O operations per second
2326 # @iops_wr: write I/O operations per second
2328 # @bps_max: total throughput limit during bursts,
2329 # in bytes (Since 1.7)
2331 # @bps_rd_max: read throughput limit during bursts,
2332 # in bytes (Since 1.7)
2334 # @bps_wr_max: write throughput limit during bursts,
2335 # in bytes (Since 1.7)
2337 # @iops_max: total I/O operations per second during bursts,
2338 # in bytes (Since 1.7)
2340 # @iops_rd_max: read I/O operations per second during bursts,
2341 # in bytes (Since 1.7)
2343 # @iops_wr_max: write I/O operations per second during bursts,
2344 # in bytes (Since 1.7)
2346 # @bps_max_length: maximum length of the @bps_max burst
2347 # period, in seconds. It must only
2348 # be set if @bps_max is set as well.
2349 # Defaults to 1. (Since 2.6)
2351 # @bps_rd_max_length: maximum length of the @bps_rd_max
2352 # burst period, in seconds. It must only
2353 # be set if @bps_rd_max is set as well.
2354 # Defaults to 1. (Since 2.6)
2356 # @bps_wr_max_length: maximum length of the @bps_wr_max
2357 # burst period, in seconds. It must only
2358 # be set if @bps_wr_max is set as well.
2359 # Defaults to 1. (Since 2.6)
2361 # @iops_max_length: maximum length of the @iops burst
2362 # period, in seconds. It must only
2363 # be set if @iops_max is set as well.
2364 # Defaults to 1. (Since 2.6)
2366 # @iops_rd_max_length: maximum length of the @iops_rd_max
2367 # burst period, in seconds. It must only
2368 # be set if @iops_rd_max is set as well.
2369 # Defaults to 1. (Since 2.6)
2371 # @iops_wr_max_length: maximum length of the @iops_wr_max
2372 # burst period, in seconds. It must only
2373 # be set if @iops_wr_max is set as well.
2374 # Defaults to 1. (Since 2.6)
2376 # @iops_size: an I/O size in bytes (Since 1.7)
2378 # @group: throttle group name (Since 2.4)
2381 # @deprecated: Member @device is deprecated. Use @id instead.
2385 { 'struct': 'BlockIOThrottle',
2386 'data': { '*device': { 'type': 'str', 'features': [ 'deprecated' ] },
2387 '*id': 'str', 'bps': 'int', 'bps_rd': 'int',
2388 'bps_wr': 'int', 'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
2389 '*bps_max': 'int', '*bps_rd_max': 'int',
2390 '*bps_wr_max': 'int', '*iops_max': 'int',
2391 '*iops_rd_max': 'int', '*iops_wr_max': 'int',
2392 '*bps_max_length': 'int', '*bps_rd_max_length': 'int',
2393 '*bps_wr_max_length': 'int', '*iops_max_length': 'int',
2394 '*iops_rd_max_length': 'int', '*iops_wr_max_length': 'int',
2395 '*iops_size': 'int', '*group': 'str' } }
2400 # Limit parameters for throttling.
2401 # Since some limit combinations are illegal, limits should always be set in one
2402 # transaction. All fields are optional. When setting limits, if a field is
2403 # missing the current value is not changed.
2405 # @iops-total: limit total I/O operations per second
2406 # @iops-total-max: I/O operations burst
2407 # @iops-total-max-length: length of the iops-total-max burst period, in seconds
2408 # It must only be set if @iops-total-max is set as well.
2409 # @iops-read: limit read operations per second
2410 # @iops-read-max: I/O operations read burst
2411 # @iops-read-max-length: length of the iops-read-max burst period, in seconds
2412 # It must only be set if @iops-read-max is set as well.
2413 # @iops-write: limit write operations per second
2414 # @iops-write-max: I/O operations write burst
2415 # @iops-write-max-length: length of the iops-write-max burst period, in seconds
2416 # It must only be set if @iops-write-max is set as well.
2417 # @bps-total: limit total bytes per second
2418 # @bps-total-max: total bytes burst
2419 # @bps-total-max-length: length of the bps-total-max burst period, in seconds.
2420 # It must only be set if @bps-total-max is set as well.
2421 # @bps-read: limit read bytes per second
2422 # @bps-read-max: total bytes read burst
2423 # @bps-read-max-length: length of the bps-read-max burst period, in seconds
2424 # It must only be set if @bps-read-max is set as well.
2425 # @bps-write: limit write bytes per second
2426 # @bps-write-max: total bytes write burst
2427 # @bps-write-max-length: length of the bps-write-max burst period, in seconds
2428 # It must only be set if @bps-write-max is set as well.
2429 # @iops-size: when limiting by iops max size of an I/O in bytes
2433 { 'struct': 'ThrottleLimits',
2434 'data': { '*iops-total' : 'int', '*iops-total-max' : 'int',
2435 '*iops-total-max-length' : 'int', '*iops-read' : 'int',
2436 '*iops-read-max' : 'int', '*iops-read-max-length' : 'int',
2437 '*iops-write' : 'int', '*iops-write-max' : 'int',
2438 '*iops-write-max-length' : 'int', '*bps-total' : 'int',
2439 '*bps-total-max' : 'int', '*bps-total-max-length' : 'int',
2440 '*bps-read' : 'int', '*bps-read-max' : 'int',
2441 '*bps-read-max-length' : 'int', '*bps-write' : 'int',
2442 '*bps-write-max' : 'int', '*bps-write-max-length' : 'int',
2443 '*iops-size' : 'int' } }
2448 # Copy data from a backing file into a block device.
2450 # The block streaming operation is performed in the background until the entire
2451 # backing file has been copied. This command returns immediately once streaming
2452 # has started. The status of ongoing block streaming operations can be checked
2453 # with query-block-jobs. The operation can be stopped before it has completed
2454 # using the block-job-cancel command.
2456 # The node that receives the data is called the top image, can be located in
2457 # any part of the chain (but always above the base image; see below) and can be
2458 # specified using its device or node name. Earlier qemu versions only allowed
2459 # 'device' to name the top level node; presence of the 'base-node' parameter
2460 # during introspection can be used as a witness of the enhanced semantics
2463 # If a base file is specified then sectors are not copied from that base file and
2464 # its backing chain. This can be used to stream a subset of the backing file
2465 # chain instead of flattening the entire image.
2466 # When streaming completes the image file will have the base file as its backing
2467 # file, unless that node was changed while the job was running. In that case,
2468 # base's parent's backing (or filtered, whichever exists) child (i.e., base at
2469 # the beginning of the job) will be the new backing file.
2471 # On successful completion the image file is updated to drop the backing file
2472 # and the BLOCK_JOB_COMPLETED event is emitted.
2474 # In case @device is a filter node, block-stream modifies the first non-filter
2475 # overlay node below it to point to the new backing node instead of modifying
2478 # @job-id: identifier for the newly-created block job. If
2479 # omitted, the device name will be used. (Since 2.7)
2481 # @device: the device or node name of the top image
2483 # @base: the common backing file name.
2484 # It cannot be set if @base-node or @bottom is also set.
2486 # @base-node: the node name of the backing file.
2487 # It cannot be set if @base or @bottom is also set. (Since 2.8)
2489 # @bottom: the last node in the chain that should be streamed into
2490 # top. It cannot be set if @base or @base-node is also set.
2491 # It cannot be filter node. (Since 6.0)
2493 # @backing-file: The backing file string to write into the top
2494 # image. This filename is not validated.
2496 # If a pathname string is such that it cannot be
2497 # resolved by QEMU, that means that subsequent QMP or
2498 # HMP commands must use node-names for the image in
2499 # question, as filename lookup methods will fail.
2501 # If not specified, QEMU will automatically determine
2502 # the backing file string to use, or error out if there
2503 # is no obvious choice. Care should be taken when
2504 # specifying the string, to specify a valid filename or
2508 # @speed: the maximum speed, in bytes per second
2510 # @on-error: the action to take on an error (default report).
2511 # 'stop' and 'enospc' can only be used if the block device
2512 # supports io-status (see BlockInfo). Since 1.3.
2514 # @filter-node-name: the node name that should be assigned to the
2515 # filter driver that the stream job inserts into the graph
2516 # above @device. If this option is not given, a node name is
2517 # autogenerated. (Since: 6.0)
2519 # @auto-finalize: When false, this job will wait in a PENDING state after it has
2520 # finished its work, waiting for @block-job-finalize before
2521 # making any block graph changes.
2522 # When true, this job will automatically
2523 # perform its abort or commit actions.
2524 # Defaults to true. (Since 3.1)
2526 # @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
2527 # has completely ceased all work, and awaits @block-job-dismiss.
2528 # When true, this job will automatically disappear from the query
2529 # list without user intervention.
2530 # Defaults to true. (Since 3.1)
2532 # Returns: - Nothing on success.
2533 # - If @device does not exist, DeviceNotFound.
2539 # -> { "execute": "block-stream",
2540 # "arguments": { "device": "virtio0",
2541 # "base": "/tmp/master.qcow2" } }
2542 # <- { "return": {} }
2545 { 'command': 'block-stream',
2546 'data': { '*job-id': 'str', 'device': 'str', '*base': 'str',
2547 '*base-node': 'str', '*backing-file': 'str', '*bottom': 'str',
2548 '*speed': 'int', '*on-error': 'BlockdevOnError',
2549 '*filter-node-name': 'str',
2550 '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
2553 # @block-job-set-speed:
2555 # Set maximum speed for a background block operation.
2557 # This command can only be issued when there is an active block job.
2559 # Throttling can be disabled by setting the speed to 0.
2561 # @device: The job identifier. This used to be a device name (hence
2562 # the name of the parameter), but since QEMU 2.7 it can have
2565 # @speed: the maximum speed, in bytes per second, or 0 for unlimited.
2568 # Returns: - Nothing on success
2569 # - If no background operation is active on this device, DeviceNotActive
2573 { 'command': 'block-job-set-speed',
2574 'data': { 'device': 'str', 'speed': 'int' } }
2577 # @block-job-cancel:
2579 # Stop an active background block operation.
2581 # This command returns immediately after marking the active background block
2582 # operation for cancellation. It is an error to call this command if no
2583 # operation is in progress.
2585 # The operation will cancel as soon as possible and then emit the
2586 # BLOCK_JOB_CANCELLED event. Before that happens the job is still visible when
2587 # enumerated using query-block-jobs.
2589 # Note that if you issue 'block-job-cancel' after 'drive-mirror' has indicated
2590 # (via the event BLOCK_JOB_READY) that the source and destination are
2591 # synchronized, then the event triggered by this command changes to
2592 # BLOCK_JOB_COMPLETED, to indicate that the mirroring has ended and the
2593 # destination now has a point-in-time copy tied to the time of the cancellation.
2595 # For streaming, the image file retains its backing file unless the streaming
2596 # operation happens to complete just as it is being cancelled. A new streaming
2597 # operation can be started at a later time to finish copying all data from the
2600 # @device: The job identifier. This used to be a device name (hence
2601 # the name of the parameter), but since QEMU 2.7 it can have
2604 # @force: If true, and the job has already emitted the event BLOCK_JOB_READY,
2605 # abandon the job immediately (even if it is paused) instead of waiting
2606 # for the destination to complete its final synchronization (since 1.3)
2608 # Returns: - Nothing on success
2609 # - If no background operation is active on this device, DeviceNotActive
2613 { 'command': 'block-job-cancel', 'data': { 'device': 'str', '*force': 'bool' } }
2618 # Pause an active background block operation.
2620 # This command returns immediately after marking the active background block
2621 # operation for pausing. It is an error to call this command if no
2622 # operation is in progress or if the job is already paused.
2624 # The operation will pause as soon as possible. No event is emitted when
2625 # the operation is actually paused. Cancelling a paused job automatically
2628 # @device: The job identifier. This used to be a device name (hence
2629 # the name of the parameter), but since QEMU 2.7 it can have
2632 # Returns: - Nothing on success
2633 # - If no background operation is active on this device, DeviceNotActive
2637 { 'command': 'block-job-pause', 'data': { 'device': 'str' } }
2640 # @block-job-resume:
2642 # Resume an active background block operation.
2644 # This command returns immediately after resuming a paused background block
2645 # operation. It is an error to call this command if no operation is in
2646 # progress or if the job is not paused.
2648 # This command also clears the error status of the job.
2650 # @device: The job identifier. This used to be a device name (hence
2651 # the name of the parameter), but since QEMU 2.7 it can have
2654 # Returns: - Nothing on success
2655 # - If no background operation is active on this device, DeviceNotActive
2659 { 'command': 'block-job-resume', 'data': { 'device': 'str' } }
2662 # @block-job-complete:
2664 # Manually trigger completion of an active background block operation. This
2665 # is supported for drive mirroring, where it also switches the device to
2666 # write to the target path only. The ability to complete is signaled with
2667 # a BLOCK_JOB_READY event.
2669 # This command completes an active background block operation synchronously.
2670 # The ordering of this command's return with the BLOCK_JOB_COMPLETED event
2671 # is not defined. Note that if an I/O error occurs during the processing of
2672 # this command: 1) the command itself will fail; 2) the error will be processed
2673 # according to the rerror/werror arguments that were specified when starting
2676 # A cancelled or paused job cannot be completed.
2678 # @device: The job identifier. This used to be a device name (hence
2679 # the name of the parameter), but since QEMU 2.7 it can have
2682 # Returns: - Nothing on success
2683 # - If no background operation is active on this device, DeviceNotActive
2687 { 'command': 'block-job-complete', 'data': { 'device': 'str' } }
2690 # @block-job-dismiss:
2692 # For jobs that have already concluded, remove them from the block-job-query
2693 # list. This command only needs to be run for jobs which were started with
2694 # QEMU 2.12+ job lifetime management semantics.
2696 # This command will refuse to operate on any job that has not yet reached
2697 # its terminal state, JOB_STATUS_CONCLUDED. For jobs that make use of the
2698 # BLOCK_JOB_READY event, block-job-cancel or block-job-complete will still need
2699 # to be used as appropriate.
2701 # @id: The job identifier.
2703 # Returns: Nothing on success
2707 { 'command': 'block-job-dismiss', 'data': { 'id': 'str' } }
2710 # @block-job-finalize:
2712 # Once a job that has manual=true reaches the pending state, it can be
2713 # instructed to finalize any graph changes and do any necessary cleanup
2715 # For jobs in a transaction, instructing one job to finalize will force
2716 # ALL jobs in the transaction to finalize, so it is only necessary to instruct
2717 # a single member job to finalize.
2719 # @id: The job identifier.
2721 # Returns: Nothing on success
2725 { 'command': 'block-job-finalize', 'data': { 'id': 'str' } }
2728 # @BlockdevDiscardOptions:
2730 # Determines how to handle discard requests.
2732 # @ignore: Ignore the request
2733 # @unmap: Forward as an unmap request
2737 { 'enum': 'BlockdevDiscardOptions',
2738 'data': [ 'ignore', 'unmap' ] }
2741 # @BlockdevDetectZeroesOptions:
2743 # Describes the operation mode for the automatic conversion of plain
2744 # zero writes by the OS to driver specific optimized zero write commands.
2746 # @off: Disabled (default)
2748 # @unmap: Enabled and even try to unmap blocks if possible. This requires
2749 # also that @BlockdevDiscardOptions is set to unmap for this device.
2753 { 'enum': 'BlockdevDetectZeroesOptions',
2754 'data': [ 'off', 'on', 'unmap' ] }
2757 # @BlockdevAioOptions:
2759 # Selects the AIO backend to handle I/O requests
2761 # @threads: Use qemu's thread pool
2762 # @native: Use native AIO backend (only Linux and Windows)
2763 # @io_uring: Use linux io_uring (since 5.0)
2767 { 'enum': 'BlockdevAioOptions',
2768 'data': [ 'threads', 'native',
2769 { 'name': 'io_uring', 'if': 'defined(CONFIG_LINUX_IO_URING)' } ] }
2772 # @BlockdevCacheOptions:
2774 # Includes cache-related options for block devices
2776 # @direct: enables use of O_DIRECT (bypass the host page cache;
2778 # @no-flush: ignore any flush requests for the device (default:
2783 { 'struct': 'BlockdevCacheOptions',
2784 'data': { '*direct': 'bool',
2785 '*no-flush': 'bool' } }
2790 # Drivers that are supported in block device operations.
2792 # @throttle: Since 2.11
2794 # @copy-on-read: Since 3.0
2795 # @blklogwrites: Since 3.0
2796 # @blkreplay: Since 4.2
2797 # @compress: Since 5.0
2801 { 'enum': 'BlockdevDriver',
2802 'data': [ 'blkdebug', 'blklogwrites', 'blkreplay', 'blkverify', 'bochs',
2803 'cloop', 'compress', 'copy-on-read', 'dmg', 'file', 'ftp', 'ftps',
2804 'gluster', 'host_cdrom', 'host_device', 'http', 'https', 'iscsi',
2805 'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels',
2806 'preallocate', 'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
2807 { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
2809 'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }
2812 # @BlockdevOptionsFile:
2814 # Driver specific block device options for the file backend.
2816 # @filename: path to the image file
2817 # @pr-manager: the id for the object that will handle persistent reservations
2818 # for this device (default: none, forward the commands via SG_IO;
2820 # @aio: AIO backend (default: threads) (since: 2.8)
2821 # @locking: whether to enable file locking. If set to 'auto', only enable
2822 # when Open File Descriptor (OFD) locking API is available
2823 # (default: auto, since 2.10)
2824 # @drop-cache: invalidate page cache during live migration. This prevents
2825 # stale data on the migration destination with cache.direct=off.
2826 # Currently only supported on Linux hosts.
2827 # (default: on, since: 4.0)
2828 # @x-check-cache-dropped: whether to check that page cache was dropped on live
2829 # migration. May cause noticeable delays if the image
2830 # file is large, do not use in production.
2831 # (default: off) (since: 3.0)
2834 # @dynamic-auto-read-only: If present, enabled auto-read-only means that the
2835 # driver will open the image read-only at first,
2836 # dynamically reopen the image file read-write when
2837 # the first writer is attached to the node and reopen
2838 # read-only when the last writer is detached. This
2839 # allows giving QEMU write permissions only on demand
2840 # when an operation actually needs write access.
2844 { 'struct': 'BlockdevOptionsFile',
2845 'data': { 'filename': 'str',
2846 '*pr-manager': 'str',
2847 '*locking': 'OnOffAuto',
2848 '*aio': 'BlockdevAioOptions',
2849 '*drop-cache': {'type': 'bool',
2850 'if': 'defined(CONFIG_LINUX)'},
2851 '*x-check-cache-dropped': 'bool' },
2852 'features': [ { 'name': 'dynamic-auto-read-only',
2853 'if': 'defined(CONFIG_POSIX)' } ] }
2856 # @BlockdevOptionsNull:
2858 # Driver specific block device options for the null backend.
2860 # @size: size of the device in bytes.
2861 # @latency-ns: emulated latency (in nanoseconds) in processing
2862 # requests. Default to zero which completes requests immediately.
2864 # @read-zeroes: if true, reads from the device produce zeroes; if false, the
2865 # buffer is left unchanged. (default: false; since: 4.1)
2869 { 'struct': 'BlockdevOptionsNull',
2870 'data': { '*size': 'int', '*latency-ns': 'uint64', '*read-zeroes': 'bool' } }
2873 # @BlockdevOptionsNVMe:
2875 # Driver specific block device options for the NVMe backend.
2877 # @device: PCI controller address of the NVMe device in
2878 # format hhhh:bb:ss.f (host:bus:slot.function)
2879 # @namespace: namespace number of the device, starting from 1.
2881 # Note that the PCI @device must have been unbound from any host
2882 # kernel driver before instructing QEMU to add the blockdev.
2886 { 'struct': 'BlockdevOptionsNVMe',
2887 'data': { 'device': 'str', 'namespace': 'int' } }
2890 # @BlockdevOptionsVVFAT:
2892 # Driver specific block device options for the vvfat protocol.
2894 # @dir: directory to be exported as FAT image
2895 # @fat-type: FAT type: 12, 16 or 32
2896 # @floppy: whether to export a floppy image (true) or
2897 # partitioned hard disk (false; default)
2898 # @label: set the volume label, limited to 11 bytes. FAT16 and
2899 # FAT32 traditionally have some restrictions on labels, which are
2900 # ignored by most operating systems. Defaults to "QEMU VVFAT".
2902 # @rw: whether to allow write operations (default: false)
2906 { 'struct': 'BlockdevOptionsVVFAT',
2907 'data': { 'dir': 'str', '*fat-type': 'int', '*floppy': 'bool',
2908 '*label': 'str', '*rw': 'bool' } }
2911 # @BlockdevOptionsGenericFormat:
2913 # Driver specific block device options for image format that have no option
2914 # besides their data source.
2916 # @file: reference to or definition of the data source block device
2920 { 'struct': 'BlockdevOptionsGenericFormat',
2921 'data': { 'file': 'BlockdevRef' } }
2924 # @BlockdevOptionsLUKS:
2926 # Driver specific block device options for LUKS.
2928 # @key-secret: the ID of a QCryptoSecret object providing
2929 # the decryption key (since 2.6). Mandatory except when
2930 # doing a metadata-only probe of the image.
2934 { 'struct': 'BlockdevOptionsLUKS',
2935 'base': 'BlockdevOptionsGenericFormat',
2936 'data': { '*key-secret': 'str' } }
2940 # @BlockdevOptionsGenericCOWFormat:
2942 # Driver specific block device options for image format that have no option
2943 # besides their data source and an optional backing file.
2945 # @backing: reference to or definition of the backing file block
2946 # device, null disables the backing file entirely.
2947 # Defaults to the backing file stored the image file.
2951 { 'struct': 'BlockdevOptionsGenericCOWFormat',
2952 'base': 'BlockdevOptionsGenericFormat',
2953 'data': { '*backing': 'BlockdevRefOrNull' } }
2956 # @Qcow2OverlapCheckMode:
2958 # General overlap check modes.
2960 # @none: Do not perform any checks
2962 # @constant: Perform only checks which can be done in constant time and
2963 # without reading anything from disk
2965 # @cached: Perform only checks which can be done without reading anything
2968 # @all: Perform all available overlap checks
2972 { 'enum': 'Qcow2OverlapCheckMode',
2973 'data': [ 'none', 'constant', 'cached', 'all' ] }
2976 # @Qcow2OverlapCheckFlags:
2978 # Structure of flags for each metadata structure. Setting a field to 'true'
2979 # makes qemu guard that structure against unintended overwriting. The default
2980 # value is chosen according to the template given.
2982 # @template: Specifies a template mode which can be adjusted using the other
2983 # flags, defaults to 'cached'
2985 # @bitmap-directory: since 3.0
2989 { 'struct': 'Qcow2OverlapCheckFlags',
2990 'data': { '*template': 'Qcow2OverlapCheckMode',
2991 '*main-header': 'bool',
2992 '*active-l1': 'bool',
2993 '*active-l2': 'bool',
2994 '*refcount-table': 'bool',
2995 '*refcount-block': 'bool',
2996 '*snapshot-table': 'bool',
2997 '*inactive-l1': 'bool',
2998 '*inactive-l2': 'bool',
2999 '*bitmap-directory': 'bool' } }
3002 # @Qcow2OverlapChecks:
3004 # Specifies which metadata structures should be guarded against unintended
3007 # @flags: set of flags for separate specification of each metadata structure
3010 # @mode: named mode which chooses a specific set of flags
3014 { 'alternate': 'Qcow2OverlapChecks',
3015 'data': { 'flags': 'Qcow2OverlapCheckFlags',
3016 'mode': 'Qcow2OverlapCheckMode' } }
3019 # @BlockdevQcowEncryptionFormat:
3021 # @aes: AES-CBC with plain64 initialization vectors
3025 { 'enum': 'BlockdevQcowEncryptionFormat',
3029 # @BlockdevQcowEncryption:
3033 { 'union': 'BlockdevQcowEncryption',
3034 'base': { 'format': 'BlockdevQcowEncryptionFormat' },
3035 'discriminator': 'format',
3036 'data': { 'aes': 'QCryptoBlockOptionsQCow' } }
3039 # @BlockdevOptionsQcow:
3041 # Driver specific block device options for qcow.
3043 # @encrypt: Image decryption options. Mandatory for
3044 # encrypted images, except when doing a metadata-only
3045 # probe of the image.
3049 { 'struct': 'BlockdevOptionsQcow',
3050 'base': 'BlockdevOptionsGenericCOWFormat',
3051 'data': { '*encrypt': 'BlockdevQcowEncryption' } }
3056 # @BlockdevQcow2EncryptionFormat:
3057 # @aes: AES-CBC with plain64 initialization vectors
3061 { 'enum': 'BlockdevQcow2EncryptionFormat',
3062 'data': [ 'aes', 'luks' ] }
3065 # @BlockdevQcow2Encryption:
3069 { 'union': 'BlockdevQcow2Encryption',
3070 'base': { 'format': 'BlockdevQcow2EncryptionFormat' },
3071 'discriminator': 'format',
3072 'data': { 'aes': 'QCryptoBlockOptionsQCow',
3073 'luks': 'QCryptoBlockOptionsLUKS'} }
3076 # @BlockdevOptionsPreallocate:
3078 # Filter driver intended to be inserted between format and protocol node
3079 # and do preallocation in protocol node on write.
3081 # @prealloc-align: on preallocation, align file length to this number,
3082 # default 1048576 (1M)
3084 # @prealloc-size: how much to preallocate, default 134217728 (128M)
3088 { 'struct': 'BlockdevOptionsPreallocate',
3089 'base': 'BlockdevOptionsGenericFormat',
3090 'data': { '*prealloc-align': 'int', '*prealloc-size': 'int' } }
3093 # @BlockdevOptionsQcow2:
3095 # Driver specific block device options for qcow2.
3097 # @lazy-refcounts: whether to enable the lazy refcounts
3098 # feature (default is taken from the image file)
3100 # @pass-discard-request: whether discard requests to the qcow2
3101 # device should be forwarded to the data source
3103 # @pass-discard-snapshot: whether discard requests for the data source
3104 # should be issued when a snapshot operation (e.g.
3105 # deleting a snapshot) frees clusters in the qcow2 file
3107 # @pass-discard-other: whether discard requests for the data source
3108 # should be issued on other occasions where a cluster
3111 # @overlap-check: which overlap checks to perform for writes
3112 # to the image, defaults to 'cached' (since 2.2)
3114 # @cache-size: the maximum total size of the L2 table and
3115 # refcount block caches in bytes (since 2.2)
3117 # @l2-cache-size: the maximum size of the L2 table cache in
3120 # @l2-cache-entry-size: the size of each entry in the L2 cache in
3121 # bytes. It must be a power of two between 512
3122 # and the cluster size. The default value is
3123 # the cluster size (since 2.12)
3125 # @refcount-cache-size: the maximum size of the refcount block cache
3126 # in bytes (since 2.2)
3128 # @cache-clean-interval: clean unused entries in the L2 and refcount
3129 # caches. The interval is in seconds. The default value
3130 # is 600 on supporting platforms, and 0 on other
3131 # platforms. 0 disables this feature. (since 2.5)
3133 # @encrypt: Image decryption options. Mandatory for
3134 # encrypted images, except when doing a metadata-only
3135 # probe of the image. (since 2.10)
3137 # @data-file: reference to or definition of the external data file.
3138 # This may only be specified for images that require an
3139 # external data file. If it is not specified for such
3140 # an image, the data file name is loaded from the image
3145 { 'struct': 'BlockdevOptionsQcow2',
3146 'base': 'BlockdevOptionsGenericCOWFormat',
3147 'data': { '*lazy-refcounts': 'bool',
3148 '*pass-discard-request': 'bool',
3149 '*pass-discard-snapshot': 'bool',
3150 '*pass-discard-other': 'bool',
3151 '*overlap-check': 'Qcow2OverlapChecks',
3152 '*cache-size': 'int',
3153 '*l2-cache-size': 'int',
3154 '*l2-cache-entry-size': 'int',
3155 '*refcount-cache-size': 'int',
3156 '*cache-clean-interval': 'int',
3157 '*encrypt': 'BlockdevQcow2Encryption',
3158 '*data-file': 'BlockdevRef' } }
3161 # @SshHostKeyCheckMode:
3163 # @none: Don't check the host key at all
3164 # @hash: Compare the host key with a given hash
3165 # @known_hosts: Check the host key against the known_hosts file
3169 { 'enum': 'SshHostKeyCheckMode',
3170 'data': [ 'none', 'hash', 'known_hosts' ] }
3173 # @SshHostKeyCheckHashType:
3175 # @md5: The given hash is an md5 hash
3176 # @sha1: The given hash is an sha1 hash
3180 { 'enum': 'SshHostKeyCheckHashType',
3181 'data': [ 'md5', 'sha1' ] }
3186 # @type: The hash algorithm used for the hash
3187 # @hash: The expected hash value
3191 { 'struct': 'SshHostKeyHash',
3192 'data': { 'type': 'SshHostKeyCheckHashType',
3200 { 'union': 'SshHostKeyCheck',
3201 'base': { 'mode': 'SshHostKeyCheckMode' },
3202 'discriminator': 'mode',
3203 'data': { 'hash': 'SshHostKeyHash' } }
3206 # @BlockdevOptionsSsh:
3208 # @server: host address
3210 # @path: path to the image on the host
3212 # @user: user as which to connect, defaults to current
3215 # @host-key-check: Defines how and what to check the host key against
3216 # (default: known_hosts)
3220 { 'struct': 'BlockdevOptionsSsh',
3221 'data': { 'server': 'InetSocketAddress',
3224 '*host-key-check': 'SshHostKeyCheck' } }
3230 # Trigger events supported by blkdebug.
3232 # @l1_shrink_write_table: write zeros to the l1 table to shrink image.
3235 # @l1_shrink_free_l2_clusters: discard the l2 tables. (since 2.11)
3237 # @cor_write: a write due to copy-on-read (since 2.11)
3239 # @cluster_alloc_space: an allocation of file space for a cluster (since 4.1)
3241 # @none: triggers once at creation of the blkdebug node (since 4.1)
3245 { 'enum': 'BlkdebugEvent', 'prefix': 'BLKDBG',
3246 'data': [ 'l1_update', 'l1_grow_alloc_table', 'l1_grow_write_table',
3247 'l1_grow_activate_table', 'l2_load', 'l2_update',
3248 'l2_update_compressed', 'l2_alloc_cow_read', 'l2_alloc_write',
3249 'read_aio', 'read_backing_aio', 'read_compressed', 'write_aio',
3250 'write_compressed', 'vmstate_load', 'vmstate_save', 'cow_read',
3251 'cow_write', 'reftable_load', 'reftable_grow', 'reftable_update',
3252 'refblock_load', 'refblock_update', 'refblock_update_part',
3253 'refblock_alloc', 'refblock_alloc_hookup', 'refblock_alloc_write',
3254 'refblock_alloc_write_blocks', 'refblock_alloc_write_table',
3255 'refblock_alloc_switch_table', 'cluster_alloc',
3256 'cluster_alloc_bytes', 'cluster_free', 'flush_to_os',
3257 'flush_to_disk', 'pwritev_rmw_head', 'pwritev_rmw_after_head',
3258 'pwritev_rmw_tail', 'pwritev_rmw_after_tail', 'pwritev',
3259 'pwritev_zero', 'pwritev_done', 'empty_image_prepare',
3260 'l1_shrink_write_table', 'l1_shrink_free_l2_clusters',
3261 'cor_write', 'cluster_alloc_space', 'none'] }
3266 # Kinds of I/O that blkdebug can inject errors in.
3268 # @read: .bdrv_co_preadv()
3270 # @write: .bdrv_co_pwritev()
3272 # @write-zeroes: .bdrv_co_pwrite_zeroes()
3274 # @discard: .bdrv_co_pdiscard()
3276 # @flush: .bdrv_co_flush_to_disk()
3278 # @block-status: .bdrv_co_block_status()
3282 { 'enum': 'BlkdebugIOType', 'prefix': 'BLKDEBUG_IO_TYPE',
3283 'data': [ 'read', 'write', 'write-zeroes', 'discard', 'flush',
3287 # @BlkdebugInjectErrorOptions:
3289 # Describes a single error injection for blkdebug.
3291 # @event: trigger event
3293 # @state: the state identifier blkdebug needs to be in to
3294 # actually trigger the event; defaults to "any"
3296 # @iotype: the type of I/O operations on which this error should
3297 # be injected; defaults to "all read, write,
3298 # write-zeroes, discard, and flush operations"
3301 # @errno: error identifier (errno) to be returned; defaults to
3304 # @sector: specifies the sector index which has to be affected
3305 # in order to actually trigger the event; defaults to "any
3308 # @once: disables further events after this one has been
3309 # triggered; defaults to false
3311 # @immediately: fail immediately; defaults to false
3315 { 'struct': 'BlkdebugInjectErrorOptions',
3316 'data': { 'event': 'BlkdebugEvent',
3318 '*iotype': 'BlkdebugIOType',
3322 '*immediately': 'bool' } }
3325 # @BlkdebugSetStateOptions:
3327 # Describes a single state-change event for blkdebug.
3329 # @event: trigger event
3331 # @state: the current state identifier blkdebug needs to be in;
3334 # @new_state: the state identifier blkdebug is supposed to assume if
3335 # this event is triggered
3339 { 'struct': 'BlkdebugSetStateOptions',
3340 'data': { 'event': 'BlkdebugEvent',
3342 'new_state': 'int' } }
3345 # @BlockdevOptionsBlkdebug:
3347 # Driver specific block device options for blkdebug.
3349 # @image: underlying raw block device (or image file)
3351 # @config: filename of the configuration file
3353 # @align: required alignment for requests in bytes, must be
3354 # positive power of 2, or 0 for default
3356 # @max-transfer: maximum size for I/O transfers in bytes, must be
3357 # positive multiple of @align and of the underlying
3358 # file's request alignment (but need not be a power of
3359 # 2), or 0 for default (since 2.10)
3361 # @opt-write-zero: preferred alignment for write zero requests in bytes,
3362 # must be positive multiple of @align and of the
3363 # underlying file's request alignment (but need not be a
3364 # power of 2), or 0 for default (since 2.10)
3366 # @max-write-zero: maximum size for write zero requests in bytes, must be
3367 # positive multiple of @align, of @opt-write-zero, and of
3368 # the underlying file's request alignment (but need not
3369 # be a power of 2), or 0 for default (since 2.10)
3371 # @opt-discard: preferred alignment for discard requests in bytes, must
3372 # be positive multiple of @align and of the underlying
3373 # file's request alignment (but need not be a power of
3374 # 2), or 0 for default (since 2.10)
3376 # @max-discard: maximum size for discard requests in bytes, must be
3377 # positive multiple of @align, of @opt-discard, and of
3378 # the underlying file's request alignment (but need not
3379 # be a power of 2), or 0 for default (since 2.10)
3381 # @inject-error: array of error injection descriptions
3383 # @set-state: array of state-change descriptions
3385 # @take-child-perms: Permissions to take on @image in addition to what
3386 # is necessary anyway (which depends on how the
3387 # blkdebug node is used). Defaults to none.
3390 # @unshare-child-perms: Permissions not to share on @image in addition
3391 # to what cannot be shared anyway (which depends
3392 # on how the blkdebug node is used). Defaults
3393 # to none. (since 5.0)
3397 { 'struct': 'BlockdevOptionsBlkdebug',
3398 'data': { 'image': 'BlockdevRef',
3400 '*align': 'int', '*max-transfer': 'int32',
3401 '*opt-write-zero': 'int32', '*max-write-zero': 'int32',
3402 '*opt-discard': 'int32', '*max-discard': 'int32',
3403 '*inject-error': ['BlkdebugInjectErrorOptions'],
3404 '*set-state': ['BlkdebugSetStateOptions'],
3405 '*take-child-perms': ['BlockPermission'],
3406 '*unshare-child-perms': ['BlockPermission'] } }
3409 # @BlockdevOptionsBlklogwrites:
3411 # Driver specific block device options for blklogwrites.
3413 # @file: block device
3415 # @log: block device used to log writes to @file
3417 # @log-sector-size: sector size used in logging writes to @file, determines
3418 # granularity of offsets and sizes of writes (default: 512)
3420 # @log-append: append to an existing log (default: false)
3422 # @log-super-update-interval: interval of write requests after which the log
3423 # super block is updated to disk (default: 4096)
3427 { 'struct': 'BlockdevOptionsBlklogwrites',
3428 'data': { 'file': 'BlockdevRef',
3429 'log': 'BlockdevRef',
3430 '*log-sector-size': 'uint32',
3431 '*log-append': 'bool',
3432 '*log-super-update-interval': 'uint64' } }
3435 # @BlockdevOptionsBlkverify:
3437 # Driver specific block device options for blkverify.
3439 # @test: block device to be tested
3441 # @raw: raw image used for verification
3445 { 'struct': 'BlockdevOptionsBlkverify',
3446 'data': { 'test': 'BlockdevRef',
3447 'raw': 'BlockdevRef' } }
3450 # @BlockdevOptionsBlkreplay:
3452 # Driver specific block device options for blkreplay.
3454 # @image: disk image which should be controlled with blkreplay
3458 { 'struct': 'BlockdevOptionsBlkreplay',
3459 'data': { 'image': 'BlockdevRef' } }
3462 # @QuorumReadPattern:
3464 # An enumeration of quorum read patterns.
3466 # @quorum: read all the children and do a quorum vote on reads
3468 # @fifo: read only from the first child that has not failed
3472 { 'enum': 'QuorumReadPattern', 'data': [ 'quorum', 'fifo' ] }
3475 # @BlockdevOptionsQuorum:
3477 # Driver specific block device options for Quorum
3479 # @blkverify: true if the driver must print content mismatch
3480 # set to false by default
3482 # @children: the children block devices to use
3484 # @vote-threshold: the vote limit under which a read will fail
3486 # @rewrite-corrupted: rewrite corrupted data when quorum is reached
3489 # @read-pattern: choose read pattern and set to quorum by default
3494 { 'struct': 'BlockdevOptionsQuorum',
3495 'data': { '*blkverify': 'bool',
3496 'children': [ 'BlockdevRef' ],
3497 'vote-threshold': 'int',
3498 '*rewrite-corrupted': 'bool',
3499 '*read-pattern': 'QuorumReadPattern' } }
3502 # @BlockdevOptionsGluster:
3504 # Driver specific block device options for Gluster
3506 # @volume: name of gluster volume where VM image resides
3508 # @path: absolute path to image file in gluster volume
3510 # @server: gluster servers description
3512 # @debug: libgfapi log level (default '4' which is Error)
3515 # @logfile: libgfapi log file (default /dev/stderr) (Since 2.8)
3519 { 'struct': 'BlockdevOptionsGluster',
3520 'data': { 'volume': 'str',
3522 'server': ['SocketAddress'],
3524 '*logfile': 'str' } }
3529 # An enumeration of libiscsi transport types
3533 { 'enum': 'IscsiTransport',
3534 'data': [ 'tcp', 'iser' ] }
3537 # @IscsiHeaderDigest:
3539 # An enumeration of header digests supported by libiscsi
3543 { 'enum': 'IscsiHeaderDigest',
3544 'prefix': 'QAPI_ISCSI_HEADER_DIGEST',
3545 'data': [ 'crc32c', 'none', 'crc32c-none', 'none-crc32c' ] }
3548 # @BlockdevOptionsIscsi:
3550 # @transport: The iscsi transport type
3552 # @portal: The address of the iscsi portal
3554 # @target: The target iqn name
3556 # @lun: LUN to connect to. Defaults to 0.
3558 # @user: User name to log in with. If omitted, no CHAP
3559 # authentication is performed.
3561 # @password-secret: The ID of a QCryptoSecret object providing
3562 # the password for the login. This option is required if
3563 # @user is specified.
3565 # @initiator-name: The iqn name we want to identify to the target
3566 # as. If this option is not specified, an initiator name is
3567 # generated automatically.
3569 # @header-digest: The desired header digest. Defaults to
3572 # @timeout: Timeout in seconds after which a request will
3573 # timeout. 0 means no timeout and is the default.
3575 # Driver specific block device options for iscsi
3579 { 'struct': 'BlockdevOptionsIscsi',
3580 'data': { 'transport': 'IscsiTransport',
3585 '*password-secret': 'str',
3586 '*initiator-name': 'str',
3587 '*header-digest': 'IscsiHeaderDigest',
3588 '*timeout': 'int' } }
3596 { 'enum': 'RbdAuthMode',
3597 'data': [ 'cephx', 'none' ] }
3600 # @BlockdevOptionsRbd:
3602 # @pool: Ceph pool name.
3604 # @namespace: Rados namespace name in the Ceph pool. (Since 5.0)
3606 # @image: Image name in the Ceph pool.
3608 # @conf: path to Ceph configuration file. Values
3609 # in the configuration file will be overridden by
3610 # options specified via QAPI.
3612 # @snapshot: Ceph snapshot name.
3614 # @user: Ceph id name.
3616 # @auth-client-required: Acceptable authentication modes.
3617 # This maps to Ceph configuration option
3618 # "auth_client_required". (Since 3.0)
3620 # @key-secret: ID of a QCryptoSecret object providing a key
3621 # for cephx authentication.
3622 # This maps to Ceph configuration option
3623 # "key". (Since 3.0)
3625 # @server: Monitor host address and port. This maps
3626 # to the "mon_host" Ceph option.
3630 { 'struct': 'BlockdevOptionsRbd',
3631 'data': { 'pool': 'str',
3632 '*namespace': 'str',
3637 '*auth-client-required': ['RbdAuthMode'],
3638 '*key-secret': 'str',
3639 '*server': ['InetSocketAddressBase'] } }
3642 # @BlockdevOptionsSheepdog:
3644 # Driver specific block device options for sheepdog
3646 # @vdi: Virtual disk image name
3647 # @server: The Sheepdog server to connect to
3648 # @snap-id: Snapshot ID
3649 # @tag: Snapshot tag name
3651 # Only one of @snap-id and @tag may be present.
3655 { 'struct': 'BlockdevOptionsSheepdog',
3656 'data': { 'server': 'SocketAddress',
3658 '*snap-id': 'uint32',
3664 # An enumeration of replication modes.
3666 # @primary: Primary mode, the vm's state will be sent to secondary QEMU.
3668 # @secondary: Secondary mode, receive the vm's state from primary QEMU.
3672 { 'enum' : 'ReplicationMode', 'data' : [ 'primary', 'secondary' ],
3673 'if': 'defined(CONFIG_REPLICATION)' }
3676 # @BlockdevOptionsReplication:
3678 # Driver specific block device options for replication
3680 # @mode: the replication mode
3682 # @top-id: In secondary mode, node name or device ID of the root
3683 # node who owns the replication node chain. Must not be given in
3688 { 'struct': 'BlockdevOptionsReplication',
3689 'base': 'BlockdevOptionsGenericFormat',
3690 'data': { 'mode': 'ReplicationMode',
3692 'if': 'defined(CONFIG_REPLICATION)' }
3697 # An enumeration of NFS transport types
3699 # @inet: TCP transport
3703 { 'enum': 'NFSTransport',
3704 'data': [ 'inet' ] }
3709 # Captures the address of the socket
3711 # @type: transport type used for NFS (only TCP supported)
3713 # @host: host address for NFS server
3717 { 'struct': 'NFSServer',
3718 'data': { 'type': 'NFSTransport',
3722 # @BlockdevOptionsNfs:
3724 # Driver specific block device option for NFS
3726 # @server: host address
3728 # @path: path of the image on the host
3730 # @user: UID value to use when talking to the
3731 # server (defaults to 65534 on Windows and getuid()
3734 # @group: GID value to use when talking to the
3735 # server (defaults to 65534 on Windows and getgid()
3738 # @tcp-syn-count: number of SYNs during the session
3739 # establishment (defaults to libnfs default)
3741 # @readahead-size: set the readahead size in bytes (defaults
3742 # to libnfs default)
3744 # @page-cache-size: set the pagecache size in bytes (defaults
3745 # to libnfs default)
3747 # @debug: set the NFS debug level (max 2) (defaults
3748 # to libnfs default)
3752 { 'struct': 'BlockdevOptionsNfs',
3753 'data': { 'server': 'NFSServer',
3757 '*tcp-syn-count': 'int',
3758 '*readahead-size': 'int',
3759 '*page-cache-size': 'int',
3763 # @BlockdevOptionsCurlBase:
3765 # Driver specific block device options shared by all protocols supported by the
3768 # @url: URL of the image file
3770 # @readahead: Size of the read-ahead cache; must be a multiple of
3771 # 512 (defaults to 256 kB)
3773 # @timeout: Timeout for connections, in seconds (defaults to 5)
3775 # @username: Username for authentication (defaults to none)
3777 # @password-secret: ID of a QCryptoSecret object providing a password
3778 # for authentication (defaults to no password)
3780 # @proxy-username: Username for proxy authentication (defaults to none)
3782 # @proxy-password-secret: ID of a QCryptoSecret object providing a password
3783 # for proxy authentication (defaults to no password)
3787 { 'struct': 'BlockdevOptionsCurlBase',
3788 'data': { 'url': 'str',
3789 '*readahead': 'int',
3792 '*password-secret': 'str',
3793 '*proxy-username': 'str',
3794 '*proxy-password-secret': 'str' } }
3797 # @BlockdevOptionsCurlHttp:
3799 # Driver specific block device options for HTTP connections over the curl
3800 # backend. URLs must start with "http://".
3802 # @cookie: List of cookies to set; format is
3803 # "name1=content1; name2=content2;" as explained by
3804 # CURLOPT_COOKIE(3). Defaults to no cookies.
3806 # @cookie-secret: ID of a QCryptoSecret object providing the cookie data in a
3807 # secure way. See @cookie for the format. (since 2.10)
3811 { 'struct': 'BlockdevOptionsCurlHttp',
3812 'base': 'BlockdevOptionsCurlBase',
3813 'data': { '*cookie': 'str',
3814 '*cookie-secret': 'str'} }
3817 # @BlockdevOptionsCurlHttps:
3819 # Driver specific block device options for HTTPS connections over the curl
3820 # backend. URLs must start with "https://".
3822 # @cookie: List of cookies to set; format is
3823 # "name1=content1; name2=content2;" as explained by
3824 # CURLOPT_COOKIE(3). Defaults to no cookies.
3826 # @sslverify: Whether to verify the SSL certificate's validity (defaults to
3829 # @cookie-secret: ID of a QCryptoSecret object providing the cookie data in a
3830 # secure way. See @cookie for the format. (since 2.10)
3834 { 'struct': 'BlockdevOptionsCurlHttps',
3835 'base': 'BlockdevOptionsCurlBase',
3836 'data': { '*cookie': 'str',
3837 '*sslverify': 'bool',
3838 '*cookie-secret': 'str'} }
3841 # @BlockdevOptionsCurlFtp:
3843 # Driver specific block device options for FTP connections over the curl
3844 # backend. URLs must start with "ftp://".
3848 { 'struct': 'BlockdevOptionsCurlFtp',
3849 'base': 'BlockdevOptionsCurlBase',
3853 # @BlockdevOptionsCurlFtps:
3855 # Driver specific block device options for FTPS connections over the curl
3856 # backend. URLs must start with "ftps://".
3858 # @sslverify: Whether to verify the SSL certificate's validity (defaults to
3863 { 'struct': 'BlockdevOptionsCurlFtps',
3864 'base': 'BlockdevOptionsCurlBase',
3865 'data': { '*sslverify': 'bool' } }
3868 # @BlockdevOptionsNbd:
3870 # Driver specific block device options for NBD.
3872 # @server: NBD server address
3874 # @export: export name
3876 # @tls-creds: TLS credentials ID
3878 # @x-dirty-bitmap: A metadata context name such as "qemu:dirty-bitmap:NAME"
3879 # or "qemu:allocation-depth" to query in place of the
3880 # traditional "base:allocation" block status (see
3881 # NBD_OPT_LIST_META_CONTEXT in the NBD protocol; and
3882 # yes, naming this option x-context would have made
3883 # more sense) (since 3.0)
3885 # @reconnect-delay: On an unexpected disconnect, the nbd client tries to
3886 # connect again until succeeding or encountering a serious
3887 # error. During the first @reconnect-delay seconds, all
3888 # requests are paused and will be rerun on a successful
3889 # reconnect. After that time, any delayed requests and all
3890 # future requests before a successful reconnect will
3891 # immediately fail. Default 0 (Since 4.2)
3895 { 'struct': 'BlockdevOptionsNbd',
3896 'data': { 'server': 'SocketAddress',
3898 '*tls-creds': 'str',
3899 '*x-dirty-bitmap': 'str',
3900 '*reconnect-delay': 'uint32' } }
3903 # @BlockdevOptionsRaw:
3905 # Driver specific block device options for the raw driver.
3907 # @offset: position where the block device starts
3908 # @size: the assumed size of the device
3912 { 'struct': 'BlockdevOptionsRaw',
3913 'base': 'BlockdevOptionsGenericFormat',
3914 'data': { '*offset': 'int', '*size': 'int' } }
3917 # @BlockdevOptionsThrottle:
3919 # Driver specific block device options for the throttle driver
3921 # @throttle-group: the name of the throttle-group object to use. It
3922 # must already exist.
3923 # @file: reference to or definition of the data source block device
3926 { 'struct': 'BlockdevOptionsThrottle',
3927 'data': { 'throttle-group': 'str',
3928 'file' : 'BlockdevRef'
3932 # @BlockdevOptionsCor:
3934 # Driver specific block device options for the copy-on-read driver.
3936 # @bottom: The name of a non-filter node (allocation-bearing layer) that
3937 # limits the COR operations in the backing chain (inclusive), so
3938 # that no data below this node will be copied by this filter.
3939 # If option is absent, the limit is not applied, so that data
3940 # from all backing layers may be copied.
3944 { 'struct': 'BlockdevOptionsCor',
3945 'base': 'BlockdevOptionsGenericFormat',
3946 'data': { '*bottom': 'str' } }
3951 # Options for creating a block device. Many options are available for all
3952 # block devices, independent of the block driver:
3954 # @driver: block driver name
3955 # @node-name: the node name of the new node (Since 2.0).
3956 # This option is required on the top level of blockdev-add.
3957 # Valid node names start with an alphabetic character and may
3958 # contain only alphanumeric characters, '-', '.' and '_'. Their
3959 # maximum length is 31 characters.
3960 # @discard: discard-related options (default: ignore)
3961 # @cache: cache-related options
3962 # @read-only: whether the block device should be read-only (default: false).
3963 # Note that some block drivers support only read-only access,
3964 # either generally or in certain configurations. In this case,
3965 # the default value does not work and the option must be
3966 # specified explicitly.
3967 # @auto-read-only: if true and @read-only is false, QEMU may automatically
3968 # decide not to open the image read-write as requested, but
3969 # fall back to read-only instead (and switch between the modes
3970 # later), e.g. depending on whether the image file is writable
3971 # or whether a writing user is attached to the node
3972 # (default: false, since 3.1)
3973 # @detect-zeroes: detect and optimize zero writes (Since 2.1)
3975 # @force-share: force share all permission on added nodes.
3976 # Requires read-only=true. (Since 2.10)
3978 # Remaining options are determined by the block driver.
3982 { 'union': 'BlockdevOptions',
3983 'base': { 'driver': 'BlockdevDriver',
3984 '*node-name': 'str',
3985 '*discard': 'BlockdevDiscardOptions',
3986 '*cache': 'BlockdevCacheOptions',
3987 '*read-only': 'bool',
3988 '*auto-read-only': 'bool',
3989 '*force-share': 'bool',
3990 '*detect-zeroes': 'BlockdevDetectZeroesOptions' },
3991 'discriminator': 'driver',
3993 'blkdebug': 'BlockdevOptionsBlkdebug',
3994 'blklogwrites':'BlockdevOptionsBlklogwrites',
3995 'blkverify': 'BlockdevOptionsBlkverify',
3996 'blkreplay': 'BlockdevOptionsBlkreplay',
3997 'bochs': 'BlockdevOptionsGenericFormat',
3998 'cloop': 'BlockdevOptionsGenericFormat',
3999 'compress': 'BlockdevOptionsGenericFormat',
4000 'copy-on-read':'BlockdevOptionsCor',
4001 'dmg': 'BlockdevOptionsGenericFormat',
4002 'file': 'BlockdevOptionsFile',
4003 'ftp': 'BlockdevOptionsCurlFtp',
4004 'ftps': 'BlockdevOptionsCurlFtps',
4005 'gluster': 'BlockdevOptionsGluster',
4006 'host_cdrom': 'BlockdevOptionsFile',
4007 'host_device':'BlockdevOptionsFile',
4008 'http': 'BlockdevOptionsCurlHttp',
4009 'https': 'BlockdevOptionsCurlHttps',
4010 'iscsi': 'BlockdevOptionsIscsi',
4011 'luks': 'BlockdevOptionsLUKS',
4012 'nbd': 'BlockdevOptionsNbd',
4013 'nfs': 'BlockdevOptionsNfs',
4014 'null-aio': 'BlockdevOptionsNull',
4015 'null-co': 'BlockdevOptionsNull',
4016 'nvme': 'BlockdevOptionsNVMe',
4017 'parallels': 'BlockdevOptionsGenericFormat',
4018 'preallocate':'BlockdevOptionsPreallocate',
4019 'qcow2': 'BlockdevOptionsQcow2',
4020 'qcow': 'BlockdevOptionsQcow',
4021 'qed': 'BlockdevOptionsGenericCOWFormat',
4022 'quorum': 'BlockdevOptionsQuorum',
4023 'raw': 'BlockdevOptionsRaw',
4024 'rbd': 'BlockdevOptionsRbd',
4025 'replication': { 'type': 'BlockdevOptionsReplication',
4026 'if': 'defined(CONFIG_REPLICATION)' },
4027 'sheepdog': 'BlockdevOptionsSheepdog',
4028 'ssh': 'BlockdevOptionsSsh',
4029 'throttle': 'BlockdevOptionsThrottle',
4030 'vdi': 'BlockdevOptionsGenericFormat',
4031 'vhdx': 'BlockdevOptionsGenericFormat',
4032 'vmdk': 'BlockdevOptionsGenericCOWFormat',
4033 'vpc': 'BlockdevOptionsGenericFormat',
4034 'vvfat': 'BlockdevOptionsVVFAT'
4040 # Reference to a block device.
4042 # @definition: defines a new block device inline
4043 # @reference: references the ID of an existing block device
4047 { 'alternate': 'BlockdevRef',
4048 'data': { 'definition': 'BlockdevOptions',
4049 'reference': 'str' } }
4052 # @BlockdevRefOrNull:
4054 # Reference to a block device.
4056 # @definition: defines a new block device inline
4057 # @reference: references the ID of an existing block device.
4058 # An empty string means that no block device should
4059 # be referenced. Deprecated; use null instead.
4060 # @null: No block device should be referenced (since 2.10)
4064 { 'alternate': 'BlockdevRefOrNull',
4065 'data': { 'definition': 'BlockdevOptions',
4072 # Creates a new block device.
4079 # -> { "execute": "blockdev-add",
4081 # "driver": "qcow2",
4082 # "node-name": "test1",
4085 # "filename": "test.qcow2"
4089 # <- { "return": {} }
4092 # -> { "execute": "blockdev-add",
4094 # "driver": "qcow2",
4095 # "node-name": "node0",
4096 # "discard": "unmap",
4102 # "filename": "/tmp/test.qcow2"
4108 # "filename": "/dev/fdset/4"
4114 # <- { "return": {} }
4117 { 'command': 'blockdev-add', 'data': 'BlockdevOptions', 'boxed': true }
4120 # @x-blockdev-reopen:
4122 # Reopens a block device using the given set of options. Any option
4123 # not specified will be reset to its default value regardless of its
4124 # previous status. If an option cannot be changed or a particular
4125 # driver does not support reopening then the command will return an
4128 # The top-level @node-name option (from BlockdevOptions) must be
4129 # specified and is used to select the block device to be reopened.
4130 # Other @node-name options must be either omitted or set to the
4131 # current name of the appropriate node. This command won't change any
4132 # node name and any attempt to do it will result in an error.
4134 # In the case of options that refer to child nodes, the behavior of
4135 # this command depends on the value:
4137 # 1) A set of options (BlockdevOptions): the child is reopened with
4138 # the specified set of options.
4140 # 2) A reference to the current child: the child is reopened using
4141 # its existing set of options.
4143 # 3) A reference to a different node: the current child is replaced
4144 # with the specified one.
4146 # 4) NULL: the current child (if any) is detached.
4148 # Options (1) and (2) are supported in all cases, but at the moment
4149 # only @backing allows replacing or detaching an existing child.
4151 # Unlike with blockdev-add, the @backing option must always be present
4152 # unless the node being reopened does not have a backing file and its
4153 # image does not have a default backing file name as part of its
4158 { 'command': 'x-blockdev-reopen',
4159 'data': 'BlockdevOptions', 'boxed': true }
4164 # Deletes a block device that has been added using blockdev-add.
4165 # The command will fail if the node is attached to a device or is
4166 # otherwise being used.
4168 # @node-name: Name of the graph node to delete.
4174 # -> { "execute": "blockdev-add",
4176 # "driver": "qcow2",
4177 # "node-name": "node0",
4180 # "filename": "test.qcow2"
4184 # <- { "return": {} }
4186 # -> { "execute": "blockdev-del",
4187 # "arguments": { "node-name": "node0" }
4189 # <- { "return": {} }
4192 { 'command': 'blockdev-del', 'data': { 'node-name': 'str' } }
4195 # @BlockdevCreateOptionsFile:
4197 # Driver specific image creation options for file.
4199 # @filename: Filename for the new image file
4200 # @size: Size of the virtual disk in bytes
4201 # @preallocation: Preallocation mode for the new image (default: off;
4202 # allowed values: off,
4203 # falloc (if defined CONFIG_POSIX_FALLOCATE),
4204 # full (if defined CONFIG_POSIX))
4205 # @nocow: Turn off copy-on-write (valid only on btrfs; default: off)
4206 # @extent-size-hint: Extent size hint to add to the image file; 0 for not
4207 # adding an extent size hint (default: 1 MB, since 5.1)
4211 { 'struct': 'BlockdevCreateOptionsFile',
4212 'data': { 'filename': 'str',
4214 '*preallocation': 'PreallocMode',
4216 '*extent-size-hint': 'size'} }
4219 # @BlockdevCreateOptionsGluster:
4221 # Driver specific image creation options for gluster.
4223 # @location: Where to store the new image file
4224 # @size: Size of the virtual disk in bytes
4225 # @preallocation: Preallocation mode for the new image (default: off;
4226 # allowed values: off,
4227 # falloc (if defined CONFIG_GLUSTERFS_FALLOCATE),
4228 # full (if defined CONFIG_GLUSTERFS_ZEROFILL))
4232 { 'struct': 'BlockdevCreateOptionsGluster',
4233 'data': { 'location': 'BlockdevOptionsGluster',
4235 '*preallocation': 'PreallocMode' } }
4238 # @BlockdevCreateOptionsLUKS:
4240 # Driver specific image creation options for LUKS.
4242 # @file: Node to create the image format on
4243 # @size: Size of the virtual disk in bytes
4244 # @preallocation: Preallocation mode for the new image
4246 # (default: off; allowed values: off, metadata, falloc, full)
4250 { 'struct': 'BlockdevCreateOptionsLUKS',
4251 'base': 'QCryptoBlockCreateOptionsLUKS',
4252 'data': { 'file': 'BlockdevRef',
4254 '*preallocation': 'PreallocMode' } }
4257 # @BlockdevCreateOptionsNfs:
4259 # Driver specific image creation options for NFS.
4261 # @location: Where to store the new image file
4262 # @size: Size of the virtual disk in bytes
4266 { 'struct': 'BlockdevCreateOptionsNfs',
4267 'data': { 'location': 'BlockdevOptionsNfs',
4271 # @BlockdevCreateOptionsParallels:
4273 # Driver specific image creation options for parallels.
4275 # @file: Node to create the image format on
4276 # @size: Size of the virtual disk in bytes
4277 # @cluster-size: Cluster size in bytes (default: 1 MB)
4281 { 'struct': 'BlockdevCreateOptionsParallels',
4282 'data': { 'file': 'BlockdevRef',
4284 '*cluster-size': 'size' } }
4287 # @BlockdevCreateOptionsQcow:
4289 # Driver specific image creation options for qcow.
4291 # @file: Node to create the image format on
4292 # @size: Size of the virtual disk in bytes
4293 # @backing-file: File name of the backing file if a backing file
4295 # @encrypt: Encryption options if the image should be encrypted
4299 { 'struct': 'BlockdevCreateOptionsQcow',
4300 'data': { 'file': 'BlockdevRef',
4302 '*backing-file': 'str',
4303 '*encrypt': 'QCryptoBlockCreateOptions' } }
4306 # @BlockdevQcow2Version:
4308 # @v2: The original QCOW2 format as introduced in qemu 0.10 (version 2)
4309 # @v3: The extended QCOW2 format as introduced in qemu 1.1 (version 3)
4313 { 'enum': 'BlockdevQcow2Version',
4314 'data': [ 'v2', 'v3' ] }
4318 # @Qcow2CompressionType:
4320 # Compression type used in qcow2 image file
4322 # @zlib: zlib compression, see <http://zlib.net/>
4323 # @zstd: zstd compression, see <http://github.com/facebook/zstd>
4327 { 'enum': 'Qcow2CompressionType',
4328 'data': [ 'zlib', { 'name': 'zstd', 'if': 'defined(CONFIG_ZSTD)' } ] }
4331 # @BlockdevCreateOptionsQcow2:
4333 # Driver specific image creation options for qcow2.
4335 # @file: Node to create the image format on
4336 # @data-file: Node to use as an external data file in which all guest
4337 # data is stored so that only metadata remains in the qcow2
4339 # @data-file-raw: True if the external data file must stay valid as a
4340 # standalone (read-only) raw image without looking at qcow2
4341 # metadata (default: false; since: 4.0)
4342 # @extended-l2: True to make the image have extended L2 entries
4343 # (default: false; since 5.2)
4344 # @size: Size of the virtual disk in bytes
4345 # @version: Compatibility level (default: v3)
4346 # @backing-file: File name of the backing file if a backing file
4348 # @backing-fmt: Name of the block driver to use for the backing file
4349 # @encrypt: Encryption options if the image should be encrypted
4350 # @cluster-size: qcow2 cluster size in bytes (default: 65536)
4351 # @preallocation: Preallocation mode for the new image (default: off;
4352 # allowed values: off, falloc, full, metadata)
4353 # @lazy-refcounts: True if refcounts may be updated lazily (default: off)
4354 # @refcount-bits: Width of reference counts in bits (default: 16)
4355 # @compression-type: The image cluster compression method
4356 # (default: zlib, since 5.1)
4360 { 'struct': 'BlockdevCreateOptionsQcow2',
4361 'data': { 'file': 'BlockdevRef',
4362 '*data-file': 'BlockdevRef',
4363 '*data-file-raw': 'bool',
4364 '*extended-l2': 'bool',
4366 '*version': 'BlockdevQcow2Version',
4367 '*backing-file': 'str',
4368 '*backing-fmt': 'BlockdevDriver',
4369 '*encrypt': 'QCryptoBlockCreateOptions',
4370 '*cluster-size': 'size',
4371 '*preallocation': 'PreallocMode',
4372 '*lazy-refcounts': 'bool',
4373 '*refcount-bits': 'int',
4374 '*compression-type':'Qcow2CompressionType' } }
4377 # @BlockdevCreateOptionsQed:
4379 # Driver specific image creation options for qed.
4381 # @file: Node to create the image format on
4382 # @size: Size of the virtual disk in bytes
4383 # @backing-file: File name of the backing file if a backing file
4385 # @backing-fmt: Name of the block driver to use for the backing file
4386 # @cluster-size: Cluster size in bytes (default: 65536)
4387 # @table-size: L1/L2 table size (in clusters)
4391 { 'struct': 'BlockdevCreateOptionsQed',
4392 'data': { 'file': 'BlockdevRef',
4394 '*backing-file': 'str',
4395 '*backing-fmt': 'BlockdevDriver',
4396 '*cluster-size': 'size',
4397 '*table-size': 'int' } }
4400 # @BlockdevCreateOptionsRbd:
4402 # Driver specific image creation options for rbd/Ceph.
4404 # @location: Where to store the new image file. This location cannot
4405 # point to a snapshot.
4406 # @size: Size of the virtual disk in bytes
4407 # @cluster-size: RBD object size
4411 { 'struct': 'BlockdevCreateOptionsRbd',
4412 'data': { 'location': 'BlockdevOptionsRbd',
4414 '*cluster-size' : 'size' } }
4417 # @BlockdevVmdkSubformat:
4419 # Subformat options for VMDK images
4421 # @monolithicSparse: Single file image with sparse cluster allocation
4423 # @monolithicFlat: Single flat data image and a descriptor file
4425 # @twoGbMaxExtentSparse: Data is split into 2GB (per virtual LBA) sparse extent
4426 # files, in addition to a descriptor file
4428 # @twoGbMaxExtentFlat: Data is split into 2GB (per virtual LBA) flat extent
4429 # files, in addition to a descriptor file
4431 # @streamOptimized: Single file image sparse cluster allocation, optimized
4432 # for streaming over network.
4436 { 'enum': 'BlockdevVmdkSubformat',
4437 'data': [ 'monolithicSparse', 'monolithicFlat', 'twoGbMaxExtentSparse',
4438 'twoGbMaxExtentFlat', 'streamOptimized'] }
4441 # @BlockdevVmdkAdapterType:
4443 # Adapter type info for VMDK images
4447 { 'enum': 'BlockdevVmdkAdapterType',
4448 'data': [ 'ide', 'buslogic', 'lsilogic', 'legacyESX'] }
4451 # @BlockdevCreateOptionsVmdk:
4453 # Driver specific image creation options for VMDK.
4455 # @file: Where to store the new image file. This refers to the image
4456 # file for monolithcSparse and streamOptimized format, or the
4457 # descriptor file for other formats.
4458 # @size: Size of the virtual disk in bytes
4459 # @extents: Where to store the data extents. Required for monolithcFlat,
4460 # twoGbMaxExtentSparse and twoGbMaxExtentFlat formats. For
4461 # monolithicFlat, only one entry is required; for
4462 # twoGbMaxExtent* formats, the number of entries required is
4463 # calculated as extent_number = virtual_size / 2GB. Providing
4464 # more extents than will be used is an error.
4465 # @subformat: The subformat of the VMDK image. Default: "monolithicSparse".
4466 # @backing-file: The path of backing file. Default: no backing file is used.
4467 # @adapter-type: The adapter type used to fill in the descriptor. Default: ide.
4468 # @hwversion: Hardware version. The meaningful options are "4" or "6".
4470 # @zeroed-grain: Whether to enable zeroed-grain feature for sparse subformats.
4475 { 'struct': 'BlockdevCreateOptionsVmdk',
4476 'data': { 'file': 'BlockdevRef',
4478 '*extents': ['BlockdevRef'],
4479 '*subformat': 'BlockdevVmdkSubformat',
4480 '*backing-file': 'str',
4481 '*adapter-type': 'BlockdevVmdkAdapterType',
4482 '*hwversion': 'str',
4483 '*zeroed-grain': 'bool' } }
4487 # @SheepdogRedundancyType:
4489 # @full: Create a fully replicated vdi with x copies
4490 # @erasure-coded: Create an erasure coded vdi with x data strips and
4495 { 'enum': 'SheepdogRedundancyType',
4496 'data': [ 'full', 'erasure-coded' ] }
4499 # @SheepdogRedundancyFull:
4501 # @copies: Number of copies to use (between 1 and 31)
4505 { 'struct': 'SheepdogRedundancyFull',
4506 'data': { 'copies': 'int' }}
4509 # @SheepdogRedundancyErasureCoded:
4511 # @data-strips: Number of data strips to use (one of {2,4,8,16})
4512 # @parity-strips: Number of parity strips to use (between 1 and 15)
4516 { 'struct': 'SheepdogRedundancyErasureCoded',
4517 'data': { 'data-strips': 'int',
4518 'parity-strips': 'int' }}
4521 # @SheepdogRedundancy:
4525 { 'union': 'SheepdogRedundancy',
4526 'base': { 'type': 'SheepdogRedundancyType' },
4527 'discriminator': 'type',
4528 'data': { 'full': 'SheepdogRedundancyFull',
4529 'erasure-coded': 'SheepdogRedundancyErasureCoded' } }
4532 # @BlockdevCreateOptionsSheepdog:
4534 # Driver specific image creation options for Sheepdog.
4536 # @location: Where to store the new image file
4537 # @size: Size of the virtual disk in bytes
4538 # @backing-file: File name of a base image
4539 # @preallocation: Preallocation mode for the new image (default: off;
4540 # allowed values: off, full)
4541 # @redundancy: Redundancy of the image
4542 # @object-size: Object size of the image
4546 { 'struct': 'BlockdevCreateOptionsSheepdog',
4547 'data': { 'location': 'BlockdevOptionsSheepdog',
4549 '*backing-file': 'str',
4550 '*preallocation': 'PreallocMode',
4551 '*redundancy': 'SheepdogRedundancy',
4552 '*object-size': 'size' } }
4555 # @BlockdevCreateOptionsSsh:
4557 # Driver specific image creation options for SSH.
4559 # @location: Where to store the new image file
4560 # @size: Size of the virtual disk in bytes
4564 { 'struct': 'BlockdevCreateOptionsSsh',
4565 'data': { 'location': 'BlockdevOptionsSsh',
4569 # @BlockdevCreateOptionsVdi:
4571 # Driver specific image creation options for VDI.
4573 # @file: Node to create the image format on
4574 # @size: Size of the virtual disk in bytes
4575 # @preallocation: Preallocation mode for the new image (default: off;
4576 # allowed values: off, metadata)
4580 { 'struct': 'BlockdevCreateOptionsVdi',
4581 'data': { 'file': 'BlockdevRef',
4583 '*preallocation': 'PreallocMode' } }
4586 # @BlockdevVhdxSubformat:
4588 # @dynamic: Growing image file
4589 # @fixed: Preallocated fixed-size image file
4593 { 'enum': 'BlockdevVhdxSubformat',
4594 'data': [ 'dynamic', 'fixed' ] }
4597 # @BlockdevCreateOptionsVhdx:
4599 # Driver specific image creation options for vhdx.
4601 # @file: Node to create the image format on
4602 # @size: Size of the virtual disk in bytes
4603 # @log-size: Log size in bytes, must be a multiple of 1 MB
4605 # @block-size: Block size in bytes, must be a multiple of 1 MB and not
4606 # larger than 256 MB (default: automatically choose a block
4607 # size depending on the image size)
4608 # @subformat: vhdx subformat (default: dynamic)
4609 # @block-state-zero: Force use of payload blocks of type 'ZERO'. Non-standard,
4610 # but default. Do not set to 'off' when using 'qemu-img
4611 # convert' with subformat=dynamic.
4615 { 'struct': 'BlockdevCreateOptionsVhdx',
4616 'data': { 'file': 'BlockdevRef',
4618 '*log-size': 'size',
4619 '*block-size': 'size',
4620 '*subformat': 'BlockdevVhdxSubformat',
4621 '*block-state-zero': 'bool' } }
4624 # @BlockdevVpcSubformat:
4626 # @dynamic: Growing image file
4627 # @fixed: Preallocated fixed-size image file
4631 { 'enum': 'BlockdevVpcSubformat',
4632 'data': [ 'dynamic', 'fixed' ] }
4635 # @BlockdevCreateOptionsVpc:
4637 # Driver specific image creation options for vpc (VHD).
4639 # @file: Node to create the image format on
4640 # @size: Size of the virtual disk in bytes
4641 # @subformat: vhdx subformat (default: dynamic)
4642 # @force-size: Force use of the exact byte size instead of rounding to the
4643 # next size that can be represented in CHS geometry
4648 { 'struct': 'BlockdevCreateOptionsVpc',
4649 'data': { 'file': 'BlockdevRef',
4651 '*subformat': 'BlockdevVpcSubformat',
4652 '*force-size': 'bool' } }
4655 # @BlockdevCreateOptions:
4657 # Options for creating an image format on a given node.
4659 # @driver: block driver to create the image format
4663 { 'union': 'BlockdevCreateOptions',
4665 'driver': 'BlockdevDriver' },
4666 'discriminator': 'driver',
4668 'file': 'BlockdevCreateOptionsFile',
4669 'gluster': 'BlockdevCreateOptionsGluster',
4670 'luks': 'BlockdevCreateOptionsLUKS',
4671 'nfs': 'BlockdevCreateOptionsNfs',
4672 'parallels': 'BlockdevCreateOptionsParallels',
4673 'qcow': 'BlockdevCreateOptionsQcow',
4674 'qcow2': 'BlockdevCreateOptionsQcow2',
4675 'qed': 'BlockdevCreateOptionsQed',
4676 'rbd': 'BlockdevCreateOptionsRbd',
4677 'sheepdog': 'BlockdevCreateOptionsSheepdog',
4678 'ssh': 'BlockdevCreateOptionsSsh',
4679 'vdi': 'BlockdevCreateOptionsVdi',
4680 'vhdx': 'BlockdevCreateOptionsVhdx',
4681 'vmdk': 'BlockdevCreateOptionsVmdk',
4682 'vpc': 'BlockdevCreateOptionsVpc'
4688 # Starts a job to create an image format on a given node. The job is
4689 # automatically finalized, but a manual job-dismiss is required.
4691 # @job-id: Identifier for the newly created job.
4693 # @options: Options for the image creation.
4697 { 'command': 'blockdev-create',
4698 'data': { 'job-id': 'str',
4699 'options': 'BlockdevCreateOptions' } }
4702 # @BlockdevAmendOptionsLUKS:
4704 # Driver specific image amend options for LUKS.
4708 { 'struct': 'BlockdevAmendOptionsLUKS',
4709 'base': 'QCryptoBlockAmendOptionsLUKS',
4714 # @BlockdevAmendOptionsQcow2:
4716 # Driver specific image amend options for qcow2.
4717 # For now, only encryption options can be amended
4719 # @encrypt Encryption options to be amended
4723 { 'struct': 'BlockdevAmendOptionsQcow2',
4724 'data': { '*encrypt': 'QCryptoBlockAmendOptions' } }
4727 # @BlockdevAmendOptions:
4729 # Options for amending an image format
4731 # @driver: Block driver of the node to amend.
4735 { 'union': 'BlockdevAmendOptions',
4737 'driver': 'BlockdevDriver' },
4738 'discriminator': 'driver',
4740 'luks': 'BlockdevAmendOptionsLUKS',
4741 'qcow2': 'BlockdevAmendOptionsQcow2' } }
4744 # @x-blockdev-amend:
4746 # Starts a job to amend format specific options of an existing open block device
4747 # The job is automatically finalized, but a manual job-dismiss is required.
4749 # @job-id: Identifier for the newly created job.
4751 # @node-name: Name of the block node to work on
4753 # @options: Options (driver specific)
4755 # @force: Allow unsafe operations, format specific
4756 # For luks that allows erase of the last active keyslot
4757 # (permanent loss of data),
4758 # and replacement of an active keyslot
4759 # (possible loss of data if IO error happens)
4763 { 'command': 'x-blockdev-amend',
4764 'data': { 'job-id': 'str',
4766 'options': 'BlockdevAmendOptions',
4767 '*force': 'bool' } }
4770 # @BlockErrorAction:
4772 # An enumeration of action that has been taken when a DISK I/O occurs
4774 # @ignore: error has been ignored
4776 # @report: error has been reported to the device
4778 # @stop: error caused VM to be stopped
4782 { 'enum': 'BlockErrorAction',
4783 'data': [ 'ignore', 'report', 'stop' ] }
4787 # @BLOCK_IMAGE_CORRUPTED:
4789 # Emitted when a disk image is being marked corrupt. The image can be
4790 # identified by its device or node name. The 'device' field is always
4791 # present for compatibility reasons, but it can be empty ("") if the
4792 # image does not have a device name associated.
4794 # @device: device name. This is always present for compatibility
4795 # reasons, but it can be empty ("") if the image does not
4796 # have a device name associated.
4798 # @node-name: node name (Since: 2.4)
4800 # @msg: informative message for human consumption, such as the kind of
4801 # corruption being detected. It should not be parsed by machine as it is
4802 # not guaranteed to be stable
4804 # @offset: if the corruption resulted from an image access, this is
4805 # the host's access offset into the image
4807 # @size: if the corruption resulted from an image access, this is
4810 # @fatal: if set, the image is marked corrupt and therefore unusable after this
4811 # event and must be repaired (Since 2.2; before, every
4812 # BLOCK_IMAGE_CORRUPTED event was fatal)
4814 # Note: If action is "stop", a STOP event will eventually follow the
4815 # BLOCK_IO_ERROR event.
4819 # <- { "event": "BLOCK_IMAGE_CORRUPTED",
4820 # "data": { "device": "ide0-hd0", "node-name": "node0",
4821 # "msg": "Prevented active L1 table overwrite", "offset": 196608,
4823 # "timestamp": { "seconds": 1378126126, "microseconds": 966463 } }
4827 { 'event': 'BLOCK_IMAGE_CORRUPTED',
4828 'data': { 'device' : 'str',
4829 '*node-name' : 'str',
4833 'fatal' : 'bool' } }
4838 # Emitted when a disk I/O error occurs
4840 # @device: device name. This is always present for compatibility
4841 # reasons, but it can be empty ("") if the image does not
4842 # have a device name associated.
4844 # @node-name: node name. Note that errors may be reported for the root node
4845 # that is directly attached to a guest device rather than for the
4846 # node where the error occurred. The node name is not present if
4847 # the drive is empty. (Since: 2.8)
4849 # @operation: I/O operation
4851 # @action: action that has been taken
4853 # @nospace: true if I/O error was caused due to a no-space
4854 # condition. This key is only present if query-block's
4855 # io-status is present, please see query-block documentation
4856 # for more information (since: 2.2)
4858 # @reason: human readable string describing the error cause.
4859 # (This field is a debugging aid for humans, it should not
4860 # be parsed by applications) (since: 2.2)
4862 # Note: If action is "stop", a STOP event will eventually follow the
4863 # BLOCK_IO_ERROR event
4869 # <- { "event": "BLOCK_IO_ERROR",
4870 # "data": { "device": "ide0-hd1",
4871 # "node-name": "#block212",
4872 # "operation": "write",
4873 # "action": "stop" },
4874 # "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
4877 { 'event': 'BLOCK_IO_ERROR',
4878 'data': { 'device': 'str', '*node-name': 'str',
4879 'operation': 'IoOperationType',
4880 'action': 'BlockErrorAction', '*nospace': 'bool',
4884 # @BLOCK_JOB_COMPLETED:
4886 # Emitted when a block job has completed
4890 # @device: The job identifier. Originally the device name but other
4891 # values are allowed since QEMU 2.7
4893 # @len: maximum progress value
4895 # @offset: current progress value. On success this is equal to len.
4896 # On failure this is less than len
4898 # @speed: rate limit, bytes per second
4900 # @error: error message. Only present on failure. This field
4901 # contains a human-readable error message. There are no semantics
4902 # other than that streaming has failed and clients should not try to
4903 # interpret the error string
4909 # <- { "event": "BLOCK_JOB_COMPLETED",
4910 # "data": { "type": "stream", "device": "virtio-disk0",
4911 # "len": 10737418240, "offset": 10737418240,
4913 # "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }
4916 { 'event': 'BLOCK_JOB_COMPLETED',
4917 'data': { 'type' : 'JobType',
4925 # @BLOCK_JOB_CANCELLED:
4927 # Emitted when a block job has been cancelled
4931 # @device: The job identifier. Originally the device name but other
4932 # values are allowed since QEMU 2.7
4934 # @len: maximum progress value
4936 # @offset: current progress value. On success this is equal to len.
4937 # On failure this is less than len
4939 # @speed: rate limit, bytes per second
4945 # <- { "event": "BLOCK_JOB_CANCELLED",
4946 # "data": { "type": "stream", "device": "virtio-disk0",
4947 # "len": 10737418240, "offset": 134217728,
4949 # "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }
4952 { 'event': 'BLOCK_JOB_CANCELLED',
4953 'data': { 'type' : 'JobType',
4962 # Emitted when a block job encounters an error
4964 # @device: The job identifier. Originally the device name but other
4965 # values are allowed since QEMU 2.7
4967 # @operation: I/O operation
4969 # @action: action that has been taken
4975 # <- { "event": "BLOCK_JOB_ERROR",
4976 # "data": { "device": "ide0-hd1",
4977 # "operation": "write",
4978 # "action": "stop" },
4979 # "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
4982 { 'event': 'BLOCK_JOB_ERROR',
4983 'data': { 'device' : 'str',
4984 'operation': 'IoOperationType',
4985 'action' : 'BlockErrorAction' } }
4990 # Emitted when a block job is ready to complete
4994 # @device: The job identifier. Originally the device name but other
4995 # values are allowed since QEMU 2.7
4997 # @len: maximum progress value
4999 # @offset: current progress value. On success this is equal to len.
5000 # On failure this is less than len
5002 # @speed: rate limit, bytes per second
5004 # Note: The "ready to complete" status is always reset by a @BLOCK_JOB_ERROR
5011 # <- { "event": "BLOCK_JOB_READY",
5012 # "data": { "device": "drive0", "type": "mirror", "speed": 0,
5013 # "len": 2097152, "offset": 2097152 }
5014 # "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
5017 { 'event': 'BLOCK_JOB_READY',
5018 'data': { 'type' : 'JobType',
5025 # @BLOCK_JOB_PENDING:
5027 # Emitted when a block job is awaiting explicit authorization to finalize graph
5028 # changes via @block-job-finalize. If this job is part of a transaction, it will
5029 # not emit this event until the transaction has converged first.
5033 # @id: The job identifier.
5039 # <- { "event": "BLOCK_JOB_WAITING",
5040 # "data": { "device": "drive0", "type": "mirror" },
5041 # "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
5044 { 'event': 'BLOCK_JOB_PENDING',
5045 'data': { 'type' : 'JobType',
5051 # Preallocation mode of QEMU image file
5053 # @off: no preallocation
5054 # @metadata: preallocate only for metadata
5055 # @falloc: like @full preallocation but allocate disk space by
5056 # posix_fallocate() rather than writing data.
5057 # @full: preallocate all data by writing it to the device to ensure
5058 # disk space is really available. This data may or may not be
5059 # zero, depending on the image format and storage.
5060 # @full preallocation also sets up metadata correctly.
5064 { 'enum': 'PreallocMode',
5065 'data': [ 'off', 'metadata', 'falloc', 'full' ] }
5068 # @BLOCK_WRITE_THRESHOLD:
5070 # Emitted when writes on block device reaches or exceeds the
5071 # configured write threshold. For thin-provisioned devices, this
5072 # means the device should be extended to avoid pausing for
5074 # The event is one shot. Once triggered, it needs to be
5075 # re-registered with another block-set-write-threshold command.
5077 # @node-name: graph node name on which the threshold was exceeded.
5079 # @amount-exceeded: amount of data which exceeded the threshold, in bytes.
5081 # @write-threshold: last configured threshold, in bytes.
5085 { 'event': 'BLOCK_WRITE_THRESHOLD',
5086 'data': { 'node-name': 'str',
5087 'amount-exceeded': 'uint64',
5088 'write-threshold': 'uint64' } }
5091 # @block-set-write-threshold:
5093 # Change the write threshold for a block drive. An event will be
5094 # delivered if a write to this block drive crosses the configured
5095 # threshold. The threshold is an offset, thus must be
5096 # non-negative. Default is no write threshold. Setting the threshold
5097 # to zero disables it.
5099 # This is useful to transparently resize thin-provisioned drives without
5100 # the guest OS noticing.
5102 # @node-name: graph node name on which the threshold must be set.
5104 # @write-threshold: configured threshold for the block device, bytes.
5105 # Use 0 to disable the threshold.
5111 # -> { "execute": "block-set-write-threshold",
5112 # "arguments": { "node-name": "mydev",
5113 # "write-threshold": 17179869184 } }
5114 # <- { "return": {} }
5117 { 'command': 'block-set-write-threshold',
5118 'data': { 'node-name': 'str', 'write-threshold': 'uint64' } }
5121 # @x-blockdev-change:
5123 # Dynamically reconfigure the block driver state graph. It can be used
5124 # to add, remove, insert or replace a graph node. Currently only the
5125 # Quorum driver implements this feature to add or remove its child. This
5126 # is useful to fix a broken quorum child.
5128 # If @node is specified, it will be inserted under @parent. @child
5129 # may not be specified in this case. If both @parent and @child are
5130 # specified but @node is not, @child will be detached from @parent.
5132 # @parent: the id or name of the parent node.
5134 # @child: the name of a child under the given parent node.
5136 # @node: the name of the node that will be added.
5138 # Note: this command is experimental, and its API is not stable. It
5139 # does not support all kinds of operations, all kinds of children, nor
5140 # all block drivers.
5142 # FIXME Removing children from a quorum node means introducing gaps in the
5143 # child indices. This cannot be represented in the 'children' list of
5144 # BlockdevOptionsQuorum, as returned by .bdrv_refresh_filename().
5146 # Warning: The data in a new quorum child MUST be consistent with that of
5147 # the rest of the array.
5153 # 1. Add a new node to a quorum
5154 # -> { "execute": "blockdev-add",
5157 # "node-name": "new_node",
5158 # "file": { "driver": "file",
5159 # "filename": "test.raw" } } }
5160 # <- { "return": {} }
5161 # -> { "execute": "x-blockdev-change",
5162 # "arguments": { "parent": "disk1",
5163 # "node": "new_node" } }
5164 # <- { "return": {} }
5166 # 2. Delete a quorum's node
5167 # -> { "execute": "x-blockdev-change",
5168 # "arguments": { "parent": "disk1",
5169 # "child": "children.1" } }
5170 # <- { "return": {} }
5173 { 'command': 'x-blockdev-change',
5174 'data' : { 'parent': 'str',
5179 # @x-blockdev-set-iothread:
5181 # Move @node and its children into the @iothread. If @iothread is null then
5182 # move @node and its children into the main loop.
5184 # The node must not be attached to a BlockBackend.
5186 # @node-name: the name of the block driver node
5188 # @iothread: the name of the IOThread object or null for the main loop
5190 # @force: true if the node and its children should be moved when a BlockBackend
5191 # is already attached
5193 # Note: this command is experimental and intended for test cases that need
5194 # control over IOThreads only.
5200 # 1. Move a node into an IOThread
5201 # -> { "execute": "x-blockdev-set-iothread",
5202 # "arguments": { "node-name": "disk1",
5203 # "iothread": "iothread0" } }
5204 # <- { "return": {} }
5206 # 2. Move a node into the main loop
5207 # -> { "execute": "x-blockdev-set-iothread",
5208 # "arguments": { "node-name": "disk1",
5209 # "iothread": null } }
5210 # <- { "return": {} }
5213 { 'command': 'x-blockdev-set-iothread',
5214 'data' : { 'node-name': 'str',
5215 'iothread': 'StrOrNull',
5216 '*force': 'bool' } }
5221 # An enumeration of the quorum operation types
5223 # @read: read operation
5225 # @write: write operation
5227 # @flush: flush operation
5231 { 'enum': 'QuorumOpType',
5232 'data': [ 'read', 'write', 'flush' ] }
5237 # Emitted by the Quorum block driver if it fails to establish a quorum
5239 # @reference: device name if defined else node name
5241 # @sector-num: number of the first sector of the failed read operation
5243 # @sectors-count: failed read operation sector count
5245 # Note: This event is rate-limited.
5251 # <- { "event": "QUORUM_FAILURE",
5252 # "data": { "reference": "usr1", "sector-num": 345435, "sectors-count": 5 },
5253 # "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }
5256 { 'event': 'QUORUM_FAILURE',
5257 'data': { 'reference': 'str', 'sector-num': 'int', 'sectors-count': 'int' } }
5260 # @QUORUM_REPORT_BAD:
5262 # Emitted to report a corruption of a Quorum file
5264 # @type: quorum operation type (Since 2.6)
5266 # @error: error message. Only present on failure. This field
5267 # contains a human-readable error message. There are no semantics other
5268 # than that the block layer reported an error and clients should not
5269 # try to interpret the error string.
5271 # @node-name: the graph node name of the block driver state
5273 # @sector-num: number of the first sector of the failed read operation
5275 # @sectors-count: failed read operation sector count
5277 # Note: This event is rate-limited.
5285 # { "event": "QUORUM_REPORT_BAD",
5286 # "data": { "node-name": "node0", "sector-num": 345435, "sectors-count": 5,
5288 # "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }
5290 # 2. Flush operation
5292 # { "event": "QUORUM_REPORT_BAD",
5293 # "data": { "node-name": "node0", "sector-num": 0, "sectors-count": 2097120,
5294 # "type": "flush", "error": "Broken pipe" },
5295 # "timestamp": { "seconds": 1456406829, "microseconds": 291763 } }
5298 { 'event': 'QUORUM_REPORT_BAD',
5299 'data': { 'type': 'QuorumOpType', '*error': 'str', 'node-name': 'str',
5300 'sector-num': 'int', 'sectors-count': 'int' } }
5303 # @BlockdevSnapshotInternal:
5305 # @device: the device name or node-name of a root node to generate the snapshot
5308 # @name: the name of the internal snapshot to be created
5310 # Notes: In transaction, if @name is empty, or any snapshot matching @name
5311 # exists, the operation will fail. Only some image formats support it,
5312 # for example, qcow2, rbd, and sheepdog.
5316 { 'struct': 'BlockdevSnapshotInternal',
5317 'data': { 'device': 'str', 'name': 'str' } }
5320 # @blockdev-snapshot-internal-sync:
5322 # Synchronously take an internal snapshot of a block device, when the
5323 # format of the image used supports it. If the name is an empty
5324 # string, or a snapshot with name already exists, the operation will
5327 # For the arguments, see the documentation of BlockdevSnapshotInternal.
5329 # Returns: - nothing on success
5330 # - If @device is not a valid block device, GenericError
5331 # - If any snapshot matching @name exists, or @name is empty,
5333 # - If the format of the image used does not support it,
5334 # BlockFormatFeatureNotSupported
5340 # -> { "execute": "blockdev-snapshot-internal-sync",
5341 # "arguments": { "device": "ide-hd0",
5342 # "name": "snapshot0" }
5344 # <- { "return": {} }
5347 { 'command': 'blockdev-snapshot-internal-sync',
5348 'data': 'BlockdevSnapshotInternal' }
5351 # @blockdev-snapshot-delete-internal-sync:
5353 # Synchronously delete an internal snapshot of a block device, when the format
5354 # of the image used support it. The snapshot is identified by name or id or
5355 # both. One of the name or id is required. Return SnapshotInfo for the
5356 # successfully deleted snapshot.
5358 # @device: the device name or node-name of a root node to delete the snapshot
5361 # @id: optional the snapshot's ID to be deleted
5363 # @name: optional the snapshot's name to be deleted
5365 # Returns: - SnapshotInfo on success
5366 # - If @device is not a valid block device, GenericError
5367 # - If snapshot not found, GenericError
5368 # - If the format of the image used does not support it,
5369 # BlockFormatFeatureNotSupported
5370 # - If @id and @name are both not specified, GenericError
5376 # -> { "execute": "blockdev-snapshot-delete-internal-sync",
5377 # "arguments": { "device": "ide-hd0",
5378 # "name": "snapshot0" }
5382 # "name": "snapshot0",
5383 # "vm-state-size": 0,
5384 # "date-sec": 1000012,
5386 # "vm-clock-sec": 100,
5387 # "vm-clock-nsec": 20,
5393 { 'command': 'blockdev-snapshot-delete-internal-sync',
5394 'data': { 'device': 'str', '*id': 'str', '*name': 'str'},
5395 'returns': 'SnapshotInfo' }