4b80ab2b7d
If we wish to make differential backups a feature that's easy to access, it might be pertinent to rename the "dirty-bitmap" mode to "incremental" to make it clear what /type/ of backup the dirty-bitmap is helping us perform. This is an API breaking change, but 2.4 has not yet gone live, so we have this flexibility. Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1433463642-21840-2-git-send-email-jsnow@redhat.com Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2106 lines
66 KiB
Python
2106 lines
66 KiB
Python
# -*- Mode: Python -*-
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#
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# QAPI block core definitions (vm unrelated)
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# QAPI common definitions
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{ 'include': 'common.json' }
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##
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# @SnapshotInfo
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#
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# @id: unique snapshot id
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#
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# @name: user chosen name
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#
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# @vm-state-size: size of the VM state
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#
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# @date-sec: UTC date of the snapshot in seconds
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#
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# @date-nsec: fractional part in nano seconds to be used with date-sec
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#
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# @vm-clock-sec: VM clock relative to boot in seconds
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#
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# @vm-clock-nsec: fractional part in nano seconds to be used with vm-clock-sec
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#
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# Since: 1.3
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#
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##
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{ 'struct': 'SnapshotInfo',
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'data': { 'id': 'str', 'name': 'str', 'vm-state-size': 'int',
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'date-sec': 'int', 'date-nsec': 'int',
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'vm-clock-sec': 'int', 'vm-clock-nsec': 'int' } }
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##
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# @ImageInfoSpecificQCow2:
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#
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# @compat: compatibility level
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#
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# @lazy-refcounts: #optional on or off; only valid for compat >= 1.1
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#
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# @corrupt: #optional true if the image has been marked corrupt; only valid for
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# compat >= 1.1 (since 2.2)
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#
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# @refcount-bits: width of a refcount entry in bits (since 2.3)
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#
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# Since: 1.7
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##
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{ 'struct': 'ImageInfoSpecificQCow2',
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'data': {
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'compat': 'str',
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'*lazy-refcounts': 'bool',
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'*corrupt': 'bool',
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'refcount-bits': 'int'
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} }
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##
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# @ImageInfoSpecificVmdk:
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#
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# @create-type: The create type of VMDK image
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#
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# @cid: Content id of image
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#
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# @parent-cid: Parent VMDK image's cid
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#
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# @extents: List of extent files
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#
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# Since: 1.7
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##
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{ 'struct': 'ImageInfoSpecificVmdk',
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'data': {
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'create-type': 'str',
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'cid': 'int',
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'parent-cid': 'int',
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'extents': ['ImageInfo']
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} }
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##
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# @ImageInfoSpecific:
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#
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# A discriminated record of image format specific information structures.
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#
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# Since: 1.7
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##
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{ 'union': 'ImageInfoSpecific',
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'data': {
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'qcow2': 'ImageInfoSpecificQCow2',
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'vmdk': 'ImageInfoSpecificVmdk'
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} }
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##
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# @ImageInfo:
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#
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# Information about a QEMU image file
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#
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# @filename: name of the image file
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#
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# @format: format of the image file
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#
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# @virtual-size: maximum capacity in bytes of the image
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#
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# @actual-size: #optional actual size on disk in bytes of the image
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#
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# @dirty-flag: #optional true if image is not cleanly closed
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#
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# @cluster-size: #optional size of a cluster in bytes
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#
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# @encrypted: #optional true if the image is encrypted
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#
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# @compressed: #optional true if the image is compressed (Since 1.7)
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#
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# @backing-filename: #optional name of the backing file
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#
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# @full-backing-filename: #optional full path of the backing file
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#
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# @backing-filename-format: #optional the format of the backing file
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#
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# @snapshots: #optional list of VM snapshots
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#
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# @backing-image: #optional info of the backing image (since 1.6)
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#
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# @format-specific: #optional structure supplying additional format-specific
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# information (since 1.7)
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#
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# Since: 1.3
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#
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##
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{ 'struct': 'ImageInfo',
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'data': {'filename': 'str', 'format': 'str', '*dirty-flag': 'bool',
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'*actual-size': 'int', 'virtual-size': 'int',
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'*cluster-size': 'int', '*encrypted': 'bool', '*compressed': 'bool',
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'*backing-filename': 'str', '*full-backing-filename': 'str',
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'*backing-filename-format': 'str', '*snapshots': ['SnapshotInfo'],
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'*backing-image': 'ImageInfo',
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'*format-specific': 'ImageInfoSpecific' } }
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##
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# @ImageCheck:
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#
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# Information about a QEMU image file check
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#
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# @filename: name of the image file checked
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#
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# @format: format of the image file checked
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#
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# @check-errors: number of unexpected errors occurred during check
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#
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# @image-end-offset: #optional offset (in bytes) where the image ends, this
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# field is present if the driver for the image format
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# supports it
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#
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# @corruptions: #optional number of corruptions found during the check if any
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#
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# @leaks: #optional number of leaks found during the check if any
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#
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# @corruptions-fixed: #optional number of corruptions fixed during the check
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# if any
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#
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# @leaks-fixed: #optional number of leaks fixed during the check if any
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#
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# @total-clusters: #optional total number of clusters, this field is present
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# if the driver for the image format supports it
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#
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# @allocated-clusters: #optional total number of allocated clusters, this
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# field is present if the driver for the image format
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# supports it
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#
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# @fragmented-clusters: #optional total number of fragmented clusters, this
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# field is present if the driver for the image format
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# supports it
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#
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# @compressed-clusters: #optional total number of compressed clusters, this
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# field is present if the driver for the image format
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# supports it
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#
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# Since: 1.4
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#
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##
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{ 'struct': 'ImageCheck',
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'data': {'filename': 'str', 'format': 'str', 'check-errors': 'int',
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'*image-end-offset': 'int', '*corruptions': 'int', '*leaks': 'int',
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'*corruptions-fixed': 'int', '*leaks-fixed': 'int',
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'*total-clusters': 'int', '*allocated-clusters': 'int',
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'*fragmented-clusters': 'int', '*compressed-clusters': 'int' } }
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##
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# @BlockdevCacheInfo
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#
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# Cache mode information for a block device
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#
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# @writeback: true if writeback mode is enabled
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# @direct: true if the host page cache is bypassed (O_DIRECT)
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# @no-flush: true if flush requests are ignored for the device
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#
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# Since: 2.3
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##
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{ 'struct': 'BlockdevCacheInfo',
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'data': { 'writeback': 'bool',
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'direct': 'bool',
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'no-flush': 'bool' } }
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##
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# @BlockDeviceInfo:
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#
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# Information about the backing device for a block device.
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#
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# @file: the filename of the backing device
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#
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# @node-name: #optional the name of the block driver node (Since 2.0)
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#
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# @ro: true if the backing device was open read-only
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#
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# @drv: the name of the block format used to open the backing device. As of
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# 0.14.0 this can be: 'blkdebug', 'bochs', 'cloop', 'cow', 'dmg',
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# 'file', 'file', 'ftp', 'ftps', 'host_cdrom', 'host_device',
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# 'host_floppy', 'http', 'https', 'nbd', 'parallels', 'qcow',
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# 'qcow2', 'raw', 'tftp', 'vdi', 'vmdk', 'vpc', 'vvfat'
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# 2.2: 'archipelago' added, 'cow' dropped
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# 2.3: 'host_floppy' deprecated
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#
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# @backing_file: #optional the name of the backing file (for copy-on-write)
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#
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# @backing_file_depth: number of files in the backing file chain (since: 1.2)
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#
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# @encrypted: true if the backing device is encrypted
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#
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# @encryption_key_missing: true if the backing device is encrypted but an
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# valid encryption key is missing
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#
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# @detect_zeroes: detect and optimize zero writes (Since 2.1)
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#
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# @bps: total throughput limit in bytes per second is specified
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#
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# @bps_rd: read throughput limit in bytes per second is specified
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#
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# @bps_wr: write throughput limit in bytes per second is specified
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#
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# @iops: total I/O operations per second is specified
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#
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# @iops_rd: read I/O operations per second is specified
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#
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# @iops_wr: write I/O operations per second is specified
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#
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# @image: the info of image used (since: 1.6)
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#
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# @bps_max: #optional total max in bytes (Since 1.7)
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#
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# @bps_rd_max: #optional read max in bytes (Since 1.7)
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#
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# @bps_wr_max: #optional write max in bytes (Since 1.7)
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#
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# @iops_max: #optional total I/O operations max (Since 1.7)
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#
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# @iops_rd_max: #optional read I/O operations max (Since 1.7)
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#
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# @iops_wr_max: #optional write I/O operations max (Since 1.7)
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#
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# @iops_size: #optional an I/O size in bytes (Since 1.7)
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#
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# @group: #optional throttle group name (Since 2.4)
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#
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# @cache: the cache mode used for the block device (since: 2.3)
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#
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# @write_threshold: configured write threshold for the device.
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# 0 if disabled. (Since 2.3)
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#
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# Since: 0.14.0
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#
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##
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{ 'struct': 'BlockDeviceInfo',
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'data': { 'file': 'str', '*node-name': 'str', 'ro': 'bool', 'drv': 'str',
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'*backing_file': 'str', 'backing_file_depth': 'int',
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'encrypted': 'bool', 'encryption_key_missing': 'bool',
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'detect_zeroes': 'BlockdevDetectZeroesOptions',
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'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int',
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'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
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'image': 'ImageInfo',
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'*bps_max': 'int', '*bps_rd_max': 'int',
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'*bps_wr_max': 'int', '*iops_max': 'int',
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'*iops_rd_max': 'int', '*iops_wr_max': 'int',
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'*iops_size': 'int', '*group': 'str', 'cache': 'BlockdevCacheInfo',
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'write_threshold': 'int' } }
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##
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# @BlockDeviceIoStatus:
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#
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# An enumeration of block device I/O status.
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#
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# @ok: The last I/O operation has succeeded
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#
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# @failed: The last I/O operation has failed
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#
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# @nospace: The last I/O operation has failed due to a no-space condition
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#
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# Since: 1.0
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##
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{ 'enum': 'BlockDeviceIoStatus', 'data': [ 'ok', 'failed', 'nospace' ] }
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##
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# @BlockDeviceMapEntry:
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#
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# Entry in the metadata map of the device (returned by "qemu-img map")
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#
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# @start: Offset in the image of the first byte described by this entry
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# (in bytes)
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#
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# @length: Length of the range described by this entry (in bytes)
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#
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# @depth: Number of layers (0 = top image, 1 = top image's backing file, etc.)
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# before reaching one for which the range is allocated. The value is
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# in the range 0 to the depth of the image chain - 1.
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#
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# @zero: the sectors in this range read as zeros
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#
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# @data: reading the image will actually read data from a file (in particular,
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# if @offset is present this means that the sectors are not simply
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# preallocated, but contain actual data in raw format)
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#
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# @offset: if present, the image file stores the data for this range in
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# raw format at the given offset.
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#
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# Since 1.7
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##
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{ 'struct': 'BlockDeviceMapEntry',
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'data': { 'start': 'int', 'length': 'int', 'depth': 'int', 'zero': 'bool',
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'data': 'bool', '*offset': 'int' } }
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##
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# @DirtyBitmapStatus:
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#
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# An enumeration of possible states that a dirty bitmap can report to the user.
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#
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# @frozen: The bitmap is currently in-use by a backup operation or block job,
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# and is immutable.
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#
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# @disabled: The bitmap is currently in-use by an internal operation and is
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# read-only. It can still be deleted.
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#
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# @active: The bitmap is actively monitoring for new writes, and can be cleared,
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# deleted, or used for backup operations.
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#
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# Since: 2.4
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##
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{ 'enum': 'DirtyBitmapStatus',
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'data': ['active', 'disabled', 'frozen'] }
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##
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# @BlockDirtyInfo:
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#
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# Block dirty bitmap information.
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#
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# @name: #optional the name of the dirty bitmap (Since 2.4)
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#
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# @count: number of dirty bytes according to the dirty bitmap
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#
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# @granularity: granularity of the dirty bitmap in bytes (since 1.4)
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#
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# @status: current status of the dirty bitmap (since 2.4)
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#
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# Since: 1.3
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##
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{ 'struct': 'BlockDirtyInfo',
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'data': {'*name': 'str', 'count': 'int', 'granularity': 'uint32',
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'status': 'DirtyBitmapStatus'} }
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##
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# @BlockInfo:
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#
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# Block device information. This structure describes a virtual device and
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# the backing device associated with it.
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#
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# @device: The device name associated with the virtual device.
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#
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# @type: This field is returned only for compatibility reasons, it should
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# not be used (always returns 'unknown')
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#
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# @removable: True if the device supports removable media.
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#
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# @locked: True if the guest has locked this device from having its media
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# removed
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#
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# @tray_open: #optional True if the device has a tray and it is open
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# (only present if removable is true)
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#
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# @dirty-bitmaps: #optional dirty bitmaps information (only present if the
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# driver has one or more dirty bitmaps) (Since 2.0)
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#
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# @io-status: #optional @BlockDeviceIoStatus. Only present if the device
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# supports it and the VM is configured to stop on errors
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# (supported device models: virtio-blk, ide, scsi-disk)
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#
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# @inserted: #optional @BlockDeviceInfo describing the device if media is
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# present
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#
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# Since: 0.14.0
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##
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{ 'struct': 'BlockInfo',
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'data': {'device': 'str', 'type': 'str', 'removable': 'bool',
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'locked': 'bool', '*inserted': 'BlockDeviceInfo',
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'*tray_open': 'bool', '*io-status': 'BlockDeviceIoStatus',
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'*dirty-bitmaps': ['BlockDirtyInfo'] } }
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##
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# @query-block:
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#
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# Get a list of BlockInfo for all virtual block devices.
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#
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# Returns: a list of @BlockInfo describing each virtual block device
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#
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# Since: 0.14.0
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##
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{ 'command': 'query-block', 'returns': ['BlockInfo'] }
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##
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# @BlockDeviceStats:
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#
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# Statistics of a virtual block device or a block backing device.
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#
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# @rd_bytes: The number of bytes read by the device.
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#
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# @wr_bytes: The number of bytes written by the device.
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#
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# @rd_operations: The number of read operations performed by the device.
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#
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# @wr_operations: The number of write operations performed by the device.
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#
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# @flush_operations: The number of cache flush operations performed by the
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# device (since 0.15.0)
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#
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# @flush_total_time_ns: Total time spend on cache flushes in nano-seconds
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# (since 0.15.0).
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#
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# @wr_total_time_ns: Total time spend on writes in nano-seconds (since 0.15.0).
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|
#
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# @rd_total_time_ns: Total_time_spend on reads in nano-seconds (since 0.15.0).
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#
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# @wr_highest_offset: The offset after the greatest byte written to the
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# device. The intended use of this information is for
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# growable sparse files (like qcow2) that are used on top
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# of a physical device.
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#
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# @rd_merged: Number of read requests that have been merged into another
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# request (Since 2.3).
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#
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# @wr_merged: Number of write requests that have been merged into another
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|
# request (Since 2.3).
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#
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|
# Since: 0.14.0
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##
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|
{ 'struct': 'BlockDeviceStats',
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'data': {'rd_bytes': 'int', 'wr_bytes': 'int', 'rd_operations': 'int',
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'wr_operations': 'int', 'flush_operations': 'int',
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'flush_total_time_ns': 'int', 'wr_total_time_ns': 'int',
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'rd_total_time_ns': 'int', 'wr_highest_offset': 'int',
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'rd_merged': 'int', 'wr_merged': 'int' } }
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|
|
##
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|
# @BlockStats:
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|
#
|
|
# Statistics of a virtual block device or a block backing device.
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|
#
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|
# @device: #optional If the stats are for a virtual block device, the name
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# corresponding to the virtual block device.
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#
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# @node-name: #optional The node name of the device. (Since 2.3)
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#
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# @stats: A @BlockDeviceStats for the device.
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#
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# @parent: #optional This describes the file block device if it has one.
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#
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# @backing: #optional This describes the backing block device if it has one.
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# (Since 2.0)
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#
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|
# Since: 0.14.0
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##
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{ 'struct': 'BlockStats',
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'data': {'*device': 'str', '*node-name': 'str',
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'stats': 'BlockDeviceStats',
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'*parent': 'BlockStats',
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'*backing': 'BlockStats'} }
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|
|
|
##
|
|
# @query-blockstats:
|
|
#
|
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# Query the @BlockStats for all virtual block devices.
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|
#
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|
# @query-nodes: #optional If true, the command will query all the block nodes
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|
# that have a node name, in a list which will include "parent"
|
|
# information, but not "backing".
|
|
# If false or omitted, the behavior is as before - query all the
|
|
# device backends, recursively including their "parent" and
|
|
# "backing". (Since 2.3)
|
|
#
|
|
# Returns: A list of @BlockStats for each virtual block devices.
|
|
#
|
|
# Since: 0.14.0
|
|
##
|
|
{ 'command': 'query-blockstats',
|
|
'data': { '*query-nodes': 'bool' },
|
|
'returns': ['BlockStats'] }
|
|
|
|
##
|
|
# @BlockdevOnError:
|
|
#
|
|
# An enumeration of possible behaviors for errors on I/O operations.
|
|
# The exact meaning depends on whether the I/O was initiated by a guest
|
|
# or by a block job
|
|
#
|
|
# @report: for guest operations, report the error to the guest;
|
|
# for jobs, cancel the job
|
|
#
|
|
# @ignore: ignore the error, only report a QMP event (BLOCK_IO_ERROR
|
|
# or BLOCK_JOB_ERROR)
|
|
#
|
|
# @enospc: same as @stop on ENOSPC, same as @report otherwise.
|
|
#
|
|
# @stop: for guest operations, stop the virtual machine;
|
|
# for jobs, pause the job
|
|
#
|
|
# Since: 1.3
|
|
##
|
|
{ 'enum': 'BlockdevOnError',
|
|
'data': ['report', 'ignore', 'enospc', 'stop'] }
|
|
|
|
##
|
|
# @MirrorSyncMode:
|
|
#
|
|
# An enumeration of possible behaviors for the initial synchronization
|
|
# phase of storage mirroring.
|
|
#
|
|
# @top: copies data in the topmost image to the destination
|
|
#
|
|
# @full: copies data from all images to the destination
|
|
#
|
|
# @none: only copy data written from now on
|
|
#
|
|
# @incremental: only copy data described by the dirty bitmap. Since: 2.4
|
|
#
|
|
# Since: 1.3
|
|
##
|
|
{ 'enum': 'MirrorSyncMode',
|
|
'data': ['top', 'full', 'none', 'incremental'] }
|
|
|
|
##
|
|
# @BlockJobType:
|
|
#
|
|
# Type of a block job.
|
|
#
|
|
# @commit: block commit job type, see "block-commit"
|
|
#
|
|
# @stream: block stream job type, see "block-stream"
|
|
#
|
|
# @mirror: drive mirror job type, see "drive-mirror"
|
|
#
|
|
# @backup: drive backup job type, see "drive-backup"
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'enum': 'BlockJobType',
|
|
'data': ['commit', 'stream', 'mirror', 'backup'] }
|
|
|
|
##
|
|
# @BlockJobInfo:
|
|
#
|
|
# Information about a long-running block device operation.
|
|
#
|
|
# @type: the job type ('stream' for image streaming)
|
|
#
|
|
# @device: the block device name
|
|
#
|
|
# @len: the maximum progress value
|
|
#
|
|
# @busy: false if the job is known to be in a quiescent state, with
|
|
# no pending I/O. Since 1.3.
|
|
#
|
|
# @paused: whether the job is paused or, if @busy is true, will
|
|
# pause itself as soon as possible. Since 1.3.
|
|
#
|
|
# @offset: the current progress value
|
|
#
|
|
# @speed: the rate limit, bytes per second
|
|
#
|
|
# @io-status: the status of the job (since 1.3)
|
|
#
|
|
# @ready: true if the job may be completed (since 2.2)
|
|
#
|
|
# Since: 1.1
|
|
##
|
|
{ 'struct': 'BlockJobInfo',
|
|
'data': {'type': 'str', 'device': 'str', 'len': 'int',
|
|
'offset': 'int', 'busy': 'bool', 'paused': 'bool', 'speed': 'int',
|
|
'io-status': 'BlockDeviceIoStatus', 'ready': 'bool'} }
|
|
|
|
##
|
|
# @query-block-jobs:
|
|
#
|
|
# Return information about long-running block device operations.
|
|
#
|
|
# Returns: a list of @BlockJobInfo for each active block job
|
|
#
|
|
# Since: 1.1
|
|
##
|
|
{ 'command': 'query-block-jobs', 'returns': ['BlockJobInfo'] }
|
|
|
|
##
|
|
# @block_passwd:
|
|
#
|
|
# This command sets the password of a block device that has not been open
|
|
# with a password and requires one.
|
|
#
|
|
# The two cases where this can happen are a block device is created through
|
|
# QEMU's initial command line or a block device is changed through the legacy
|
|
# @change interface.
|
|
#
|
|
# In the event that the block device is created through the initial command
|
|
# line, the VM will start in the stopped state regardless of whether '-S' is
|
|
# used. The intention is for a management tool to query the block devices to
|
|
# determine which ones are encrypted, set the passwords with this command, and
|
|
# then start the guest with the @cont command.
|
|
#
|
|
# Either @device or @node-name must be set but not both.
|
|
#
|
|
# @device: #optional the name of the block backend device to set the password on
|
|
#
|
|
# @node-name: #optional graph node name to set the password on (Since 2.0)
|
|
#
|
|
# @password: the password to use for the device
|
|
#
|
|
# Returns: nothing on success
|
|
# If @device is not a valid block device, DeviceNotFound
|
|
# If @device is not encrypted, DeviceNotEncrypted
|
|
#
|
|
# Notes: Not all block formats support encryption and some that do are not
|
|
# able to validate that a password is correct. Disk corruption may
|
|
# occur if an invalid password is specified.
|
|
#
|
|
# Since: 0.14.0
|
|
##
|
|
{ 'command': 'block_passwd', 'data': {'*device': 'str',
|
|
'*node-name': 'str', 'password': 'str'} }
|
|
|
|
##
|
|
# @block_resize
|
|
#
|
|
# Resize a block image while a guest is running.
|
|
#
|
|
# Either @device or @node-name must be set but not both.
|
|
#
|
|
# @device: #optional the name of the device to get the image resized
|
|
#
|
|
# @node-name: #optional graph node name to get the image resized (Since 2.0)
|
|
#
|
|
# @size: new image size in bytes
|
|
#
|
|
# Returns: nothing on success
|
|
# If @device is not a valid block device, DeviceNotFound
|
|
#
|
|
# Since: 0.14.0
|
|
##
|
|
{ 'command': 'block_resize', 'data': { '*device': 'str',
|
|
'*node-name': 'str',
|
|
'size': 'int' }}
|
|
|
|
##
|
|
# @NewImageMode
|
|
#
|
|
# An enumeration that tells QEMU how to set the backing file path in
|
|
# a new image file.
|
|
#
|
|
# @existing: QEMU should look for an existing image file.
|
|
#
|
|
# @absolute-paths: QEMU should create a new image with absolute paths
|
|
# for the backing file. If there is no backing file available, the new
|
|
# image will not be backed either.
|
|
#
|
|
# Since: 1.1
|
|
##
|
|
{ 'enum': 'NewImageMode',
|
|
'data': [ 'existing', 'absolute-paths' ] }
|
|
|
|
##
|
|
# @BlockdevSnapshot
|
|
#
|
|
# Either @device or @node-name must be set but not both.
|
|
#
|
|
# @device: #optional the name of the device to generate the snapshot from.
|
|
#
|
|
# @node-name: #optional graph node name to generate the snapshot from (Since 2.0)
|
|
#
|
|
# @snapshot-file: the target of the new image. A new file will be created.
|
|
#
|
|
# @snapshot-node-name: #optional the graph node name of the new image (Since 2.0)
|
|
#
|
|
# @format: #optional the format of the snapshot image, default is 'qcow2'.
|
|
#
|
|
# @mode: #optional whether and how QEMU should create a new image, default is
|
|
# 'absolute-paths'.
|
|
##
|
|
{ 'struct': 'BlockdevSnapshot',
|
|
'data': { '*device': 'str', '*node-name': 'str',
|
|
'snapshot-file': 'str', '*snapshot-node-name': 'str',
|
|
'*format': 'str', '*mode': 'NewImageMode' } }
|
|
|
|
##
|
|
# @DriveBackup
|
|
#
|
|
# @device: the name of the device which should be copied.
|
|
#
|
|
# @target: the target of the new image. If the file exists, or if it
|
|
# is a device, the existing file/device will be used as the new
|
|
# destination. If it does not exist, a new file will be created.
|
|
#
|
|
# @format: #optional the format of the new destination, default is to
|
|
# probe if @mode is 'existing', else the format of the source
|
|
#
|
|
# @sync: what parts of the disk image should be copied to the destination
|
|
# (all the disk, only the sectors allocated in the topmost image, from a
|
|
# dirty bitmap, or only new I/O).
|
|
#
|
|
# @mode: #optional whether and how QEMU should create a new image, default is
|
|
# 'absolute-paths'.
|
|
#
|
|
# @speed: #optional the maximum speed, in bytes per second
|
|
#
|
|
# @bitmap: #optional the name of dirty bitmap if sync is "incremental".
|
|
# Must be present if sync is "incremental", must NOT be present
|
|
# otherwise. (Since 2.4)
|
|
#
|
|
# @on-source-error: #optional the action to take on an error on the source,
|
|
# default 'report'. 'stop' and 'enospc' can only be used
|
|
# if the block device supports io-status (see BlockInfo).
|
|
#
|
|
# @on-target-error: #optional the action to take on an error on the target,
|
|
# default 'report' (no limitations, since this applies to
|
|
# a different block device than @device).
|
|
#
|
|
# Note that @on-source-error and @on-target-error only affect background I/O.
|
|
# If an error occurs during a guest write request, the device's rerror/werror
|
|
# actions will be used.
|
|
#
|
|
# Since: 1.6
|
|
##
|
|
{ 'struct': 'DriveBackup',
|
|
'data': { 'device': 'str', 'target': 'str', '*format': 'str',
|
|
'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
|
|
'*speed': 'int', '*bitmap': 'str',
|
|
'*on-source-error': 'BlockdevOnError',
|
|
'*on-target-error': 'BlockdevOnError' } }
|
|
|
|
##
|
|
# @BlockdevBackup
|
|
#
|
|
# @device: the name of the device which should be copied.
|
|
#
|
|
# @target: the name of the backup target device.
|
|
#
|
|
# @sync: what parts of the disk image should be copied to the destination
|
|
# (all the disk, only the sectors allocated in the topmost image, or
|
|
# only new I/O).
|
|
#
|
|
# @speed: #optional the maximum speed, in bytes per second. The default is 0,
|
|
# for unlimited.
|
|
#
|
|
# @on-source-error: #optional the action to take on an error on the source,
|
|
# default 'report'. 'stop' and 'enospc' can only be used
|
|
# if the block device supports io-status (see BlockInfo).
|
|
#
|
|
# @on-target-error: #optional the action to take on an error on the target,
|
|
# default 'report' (no limitations, since this applies to
|
|
# a different block device than @device).
|
|
#
|
|
# Note that @on-source-error and @on-target-error only affect background I/O.
|
|
# If an error occurs during a guest write request, the device's rerror/werror
|
|
# actions will be used.
|
|
#
|
|
# Since: 2.3
|
|
##
|
|
{ 'struct': 'BlockdevBackup',
|
|
'data': { 'device': 'str', 'target': 'str',
|
|
'sync': 'MirrorSyncMode',
|
|
'*speed': 'int',
|
|
'*on-source-error': 'BlockdevOnError',
|
|
'*on-target-error': 'BlockdevOnError' } }
|
|
|
|
##
|
|
# @blockdev-snapshot-sync
|
|
#
|
|
# Generates a synchronous snapshot of a block device.
|
|
#
|
|
# For the arguments, see the documentation of BlockdevSnapshot.
|
|
#
|
|
# Returns: nothing on success
|
|
# If @device is not a valid block device, DeviceNotFound
|
|
#
|
|
# Since 0.14.0
|
|
##
|
|
{ 'command': 'blockdev-snapshot-sync',
|
|
'data': 'BlockdevSnapshot' }
|
|
|
|
##
|
|
# @change-backing-file
|
|
#
|
|
# Change the backing file in the image file metadata. This does not
|
|
# cause QEMU to reopen the image file to reparse the backing filename
|
|
# (it may, however, perform a reopen to change permissions from
|
|
# r/o -> r/w -> r/o, if needed). The new backing file string is written
|
|
# into the image file metadata, and the QEMU internal strings are
|
|
# updated.
|
|
#
|
|
# @image-node-name: The name of the block driver state node of the
|
|
# image to modify.
|
|
#
|
|
# @device: The name of the device that owns image-node-name.
|
|
#
|
|
# @backing-file: The string to write as the backing file. This
|
|
# string is not validated, so care should be taken
|
|
# when specifying the string or the image chain may
|
|
# not be able to be reopened again.
|
|
#
|
|
# Since: 2.1
|
|
##
|
|
{ 'command': 'change-backing-file',
|
|
'data': { 'device': 'str', 'image-node-name': 'str',
|
|
'backing-file': 'str' } }
|
|
|
|
##
|
|
# @block-commit
|
|
#
|
|
# Live commit of data from overlay image nodes into backing nodes - i.e.,
|
|
# writes data between 'top' and 'base' into 'base'.
|
|
#
|
|
# @device: the name of the device
|
|
#
|
|
# @base: #optional The file name of the backing image to write data into.
|
|
# If not specified, this is the deepest backing image
|
|
#
|
|
# @top: #optional The file name of the backing image within the image chain,
|
|
# which contains the topmost data to be committed down. If
|
|
# not specified, this is the active layer.
|
|
#
|
|
# @backing-file: #optional The backing file string to write into the overlay
|
|
# image of 'top'. If 'top' is the active layer,
|
|
# specifying a backing file string is an error. This
|
|
# filename is not validated.
|
|
#
|
|
# If a pathname string is such that it cannot be
|
|
# resolved by QEMU, that means that subsequent QMP or
|
|
# HMP commands must use node-names for the image in
|
|
# question, as filename lookup methods will fail.
|
|
#
|
|
# If not specified, QEMU will automatically determine
|
|
# the backing file string to use, or error out if
|
|
# there is no obvious choice. Care should be taken
|
|
# when specifying the string, to specify a valid
|
|
# filename or protocol.
|
|
# (Since 2.1)
|
|
#
|
|
# If top == base, that is an error.
|
|
# If top == active, the job will not be completed by itself,
|
|
# user needs to complete the job with the block-job-complete
|
|
# command after getting the ready event. (Since 2.0)
|
|
#
|
|
# If the base image is smaller than top, then the base image
|
|
# will be resized to be the same size as top. If top is
|
|
# smaller than the base image, the base will not be
|
|
# truncated. If you want the base image size to match the
|
|
# size of the smaller top, you can safely truncate it
|
|
# yourself once the commit operation successfully completes.
|
|
#
|
|
# @speed: #optional the maximum speed, in bytes per second
|
|
#
|
|
# Returns: Nothing on success
|
|
# If commit or stream is already active on this device, DeviceInUse
|
|
# If @device does not exist, DeviceNotFound
|
|
# If image commit is not supported by this device, NotSupported
|
|
# If @base or @top is invalid, a generic error is returned
|
|
# If @speed is invalid, InvalidParameter
|
|
#
|
|
# Since: 1.3
|
|
#
|
|
##
|
|
{ 'command': 'block-commit',
|
|
'data': { 'device': 'str', '*base': 'str', '*top': 'str',
|
|
'*backing-file': 'str', '*speed': 'int' } }
|
|
|
|
##
|
|
# @drive-backup
|
|
#
|
|
# Start a point-in-time copy of a block device to a new destination. The
|
|
# status of ongoing drive-backup operations can be checked with
|
|
# query-block-jobs where the BlockJobInfo.type field has the value 'backup'.
|
|
# The operation can be stopped before it has completed using the
|
|
# block-job-cancel command.
|
|
#
|
|
# For the arguments, see the documentation of DriveBackup.
|
|
#
|
|
# Returns: nothing on success
|
|
# If @device is not a valid block device, DeviceNotFound
|
|
#
|
|
# Since 1.6
|
|
##
|
|
{ 'command': 'drive-backup', 'data': 'DriveBackup' }
|
|
|
|
##
|
|
# @blockdev-backup
|
|
#
|
|
# Start a point-in-time copy of a block device to a new destination. The
|
|
# status of ongoing blockdev-backup operations can be checked with
|
|
# query-block-jobs where the BlockJobInfo.type field has the value 'backup'.
|
|
# The operation can be stopped before it has completed using the
|
|
# block-job-cancel command.
|
|
#
|
|
# For the arguments, see the documentation of BlockdevBackup.
|
|
#
|
|
# Since 2.3
|
|
##
|
|
{ 'command': 'blockdev-backup', 'data': 'BlockdevBackup' }
|
|
|
|
|
|
##
|
|
# @query-named-block-nodes
|
|
#
|
|
# Get the named block driver list
|
|
#
|
|
# Returns: the list of BlockDeviceInfo
|
|
#
|
|
# Since 2.0
|
|
##
|
|
{ 'command': 'query-named-block-nodes', 'returns': [ 'BlockDeviceInfo' ] }
|
|
|
|
##
|
|
# @drive-mirror
|
|
#
|
|
# Start mirroring a block device's writes to a new destination.
|
|
#
|
|
# @device: the name of the device whose writes should be mirrored.
|
|
#
|
|
# @target: the target of the new image. If the file exists, or if it
|
|
# is a device, the existing file/device will be used as the new
|
|
# destination. If it does not exist, a new file will be created.
|
|
#
|
|
# @format: #optional the format of the new destination, default is to
|
|
# probe if @mode is 'existing', else the format of the source
|
|
#
|
|
# @node-name: #optional the new block driver state node name in the graph
|
|
# (Since 2.1)
|
|
#
|
|
# @replaces: #optional with sync=full graph node name to be replaced by the new
|
|
# image when a whole image copy is done. This can be used to repair
|
|
# broken Quorum files. (Since 2.1)
|
|
#
|
|
# @mode: #optional whether and how QEMU should create a new image, default is
|
|
# 'absolute-paths'.
|
|
#
|
|
# @speed: #optional the maximum speed, in bytes per second
|
|
#
|
|
# @sync: what parts of the disk image should be copied to the destination
|
|
# (all the disk, only the sectors allocated in the topmost image, or
|
|
# only new I/O).
|
|
#
|
|
# @granularity: #optional granularity of the dirty bitmap, default is 64K
|
|
# if the image format doesn't have clusters, 4K if the clusters
|
|
# are smaller than that, else the cluster size. Must be a
|
|
# power of 2 between 512 and 64M (since 1.4).
|
|
#
|
|
# @buf-size: #optional maximum amount of data in flight from source to
|
|
# target (since 1.4).
|
|
#
|
|
# @on-source-error: #optional the action to take on an error on the source,
|
|
# default 'report'. 'stop' and 'enospc' can only be used
|
|
# if the block device supports io-status (see BlockInfo).
|
|
#
|
|
# @on-target-error: #optional the action to take on an error on the target,
|
|
# default 'report' (no limitations, since this applies to
|
|
# a different block device than @device).
|
|
#
|
|
# Returns: nothing on success
|
|
# If @device is not a valid block device, DeviceNotFound
|
|
#
|
|
# Since 1.3
|
|
##
|
|
{ 'command': 'drive-mirror',
|
|
'data': { 'device': 'str', 'target': 'str', '*format': 'str',
|
|
'*node-name': 'str', '*replaces': 'str',
|
|
'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
|
|
'*speed': 'int', '*granularity': 'uint32',
|
|
'*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
|
|
'*on-target-error': 'BlockdevOnError' } }
|
|
|
|
##
|
|
# @BlockDirtyBitmap
|
|
#
|
|
# @node: name of device/node which the bitmap is tracking
|
|
#
|
|
# @name: name of the dirty bitmap
|
|
#
|
|
# Since 2.4
|
|
##
|
|
{ 'struct': 'BlockDirtyBitmap',
|
|
'data': { 'node': 'str', 'name': 'str' } }
|
|
|
|
##
|
|
# @BlockDirtyBitmapAdd
|
|
#
|
|
# @node: name of device/node which the bitmap is tracking
|
|
#
|
|
# @name: name of the dirty bitmap
|
|
#
|
|
# @granularity: #optional the bitmap granularity, default is 64k for
|
|
# block-dirty-bitmap-add
|
|
#
|
|
# Since 2.4
|
|
##
|
|
{ 'struct': 'BlockDirtyBitmapAdd',
|
|
'data': { 'node': 'str', 'name': 'str', '*granularity': 'uint32' } }
|
|
|
|
##
|
|
# @block-dirty-bitmap-add
|
|
#
|
|
# Create a dirty bitmap with a name on the node
|
|
#
|
|
# Returns: nothing on success
|
|
# If @node is not a valid block device or node, DeviceNotFound
|
|
# If @name is already taken, GenericError with an explanation
|
|
#
|
|
# Since 2.4
|
|
##
|
|
{ 'command': 'block-dirty-bitmap-add',
|
|
'data': 'BlockDirtyBitmapAdd' }
|
|
|
|
##
|
|
# @block-dirty-bitmap-remove
|
|
#
|
|
# Remove a dirty bitmap on the node
|
|
#
|
|
# Returns: nothing on success
|
|
# If @node is not a valid block device or node, DeviceNotFound
|
|
# If @name is not found, GenericError with an explanation
|
|
# if @name is frozen by an operation, GenericError
|
|
#
|
|
# Since 2.4
|
|
##
|
|
{ 'command': 'block-dirty-bitmap-remove',
|
|
'data': 'BlockDirtyBitmap' }
|
|
|
|
##
|
|
# @block-dirty-bitmap-clear
|
|
#
|
|
# Clear (reset) a dirty bitmap on the device
|
|
#
|
|
# Returns: nothing on success
|
|
# If @node is not a valid block device, DeviceNotFound
|
|
# If @name is not found, GenericError with an explanation
|
|
#
|
|
# Since 2.4
|
|
##
|
|
{ 'command': 'block-dirty-bitmap-clear',
|
|
'data': 'BlockDirtyBitmap' }
|
|
|
|
##
|
|
# @block_set_io_throttle:
|
|
#
|
|
# Change I/O throttle limits for a block drive.
|
|
#
|
|
# Since QEMU 2.4, each device with I/O limits is member of a throttle
|
|
# group.
|
|
#
|
|
# If two or more devices are members of the same group, the limits
|
|
# will apply to the combined I/O of the whole group in a round-robin
|
|
# fashion. Therefore, setting new I/O limits to a device will affect
|
|
# the whole group.
|
|
#
|
|
# The name of the group can be specified using the 'group' parameter.
|
|
# If the parameter is unset, it is assumed to be the current group of
|
|
# that device. If it's not in any group yet, the name of the device
|
|
# will be used as the name for its group.
|
|
#
|
|
# The 'group' parameter can also be used to move a device to a
|
|
# different group. In this case the limits specified in the parameters
|
|
# will be applied to the new group only.
|
|
#
|
|
# I/O limits can be disabled by setting all of them to 0. In this case
|
|
# the device will be removed from its group and the rest of its
|
|
# members will not be affected. The 'group' parameter is ignored.
|
|
#
|
|
# @device: The name of the device
|
|
#
|
|
# @bps: total throughput limit in bytes per second
|
|
#
|
|
# @bps_rd: read throughput limit in bytes per second
|
|
#
|
|
# @bps_wr: write throughput limit in bytes per second
|
|
#
|
|
# @iops: total I/O operations per second
|
|
#
|
|
# @ops_rd: read I/O operations per second
|
|
#
|
|
# @iops_wr: write I/O operations per second
|
|
#
|
|
# @bps_max: #optional total max in bytes (Since 1.7)
|
|
#
|
|
# @bps_rd_max: #optional read max in bytes (Since 1.7)
|
|
#
|
|
# @bps_wr_max: #optional write max in bytes (Since 1.7)
|
|
#
|
|
# @iops_max: #optional total I/O operations max (Since 1.7)
|
|
#
|
|
# @iops_rd_max: #optional read I/O operations max (Since 1.7)
|
|
#
|
|
# @iops_wr_max: #optional write I/O operations max (Since 1.7)
|
|
#
|
|
# @iops_size: #optional an I/O size in bytes (Since 1.7)
|
|
#
|
|
# @group: #optional throttle group name (Since 2.4)
|
|
#
|
|
# Returns: Nothing on success
|
|
# If @device is not a valid block device, DeviceNotFound
|
|
#
|
|
# Since: 1.1
|
|
##
|
|
{ 'command': 'block_set_io_throttle',
|
|
'data': { 'device': 'str', 'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int',
|
|
'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
|
|
'*bps_max': 'int', '*bps_rd_max': 'int',
|
|
'*bps_wr_max': 'int', '*iops_max': 'int',
|
|
'*iops_rd_max': 'int', '*iops_wr_max': 'int',
|
|
'*iops_size': 'int', '*group': 'str' } }
|
|
|
|
##
|
|
# @block-stream:
|
|
#
|
|
# Copy data from a backing file into a block device.
|
|
#
|
|
# The block streaming operation is performed in the background until the entire
|
|
# backing file has been copied. This command returns immediately once streaming
|
|
# has started. The status of ongoing block streaming operations can be checked
|
|
# with query-block-jobs. The operation can be stopped before it has completed
|
|
# using the block-job-cancel command.
|
|
#
|
|
# If a base file is specified then sectors are not copied from that base file and
|
|
# its backing chain. When streaming completes the image file will have the base
|
|
# file as its backing file. This can be used to stream a subset of the backing
|
|
# file chain instead of flattening the entire image.
|
|
#
|
|
# On successful completion the image file is updated to drop the backing file
|
|
# and the BLOCK_JOB_COMPLETED event is emitted.
|
|
#
|
|
# @device: the device name
|
|
#
|
|
# @base: #optional the common backing file name
|
|
#
|
|
# @backing-file: #optional The backing file string to write into the active
|
|
# layer. This filename is not validated.
|
|
#
|
|
# If a pathname string is such that it cannot be
|
|
# resolved by QEMU, that means that subsequent QMP or
|
|
# HMP commands must use node-names for the image in
|
|
# question, as filename lookup methods will fail.
|
|
#
|
|
# If not specified, QEMU will automatically determine
|
|
# the backing file string to use, or error out if there
|
|
# is no obvious choice. Care should be taken when
|
|
# specifying the string, to specify a valid filename or
|
|
# protocol.
|
|
# (Since 2.1)
|
|
#
|
|
# @speed: #optional the maximum speed, in bytes per second
|
|
#
|
|
# @on-error: #optional the action to take on an error (default report).
|
|
# 'stop' and 'enospc' can only be used if the block device
|
|
# supports io-status (see BlockInfo). Since 1.3.
|
|
#
|
|
# Returns: Nothing on success
|
|
# If @device does not exist, DeviceNotFound
|
|
#
|
|
# Since: 1.1
|
|
##
|
|
{ 'command': 'block-stream',
|
|
'data': { 'device': 'str', '*base': 'str', '*backing-file': 'str',
|
|
'*speed': 'int', '*on-error': 'BlockdevOnError' } }
|
|
|
|
##
|
|
# @block-job-set-speed:
|
|
#
|
|
# Set maximum speed for a background block operation.
|
|
#
|
|
# This command can only be issued when there is an active block job.
|
|
#
|
|
# Throttling can be disabled by setting the speed to 0.
|
|
#
|
|
# @device: the device name
|
|
#
|
|
# @speed: the maximum speed, in bytes per second, or 0 for unlimited.
|
|
# Defaults to 0.
|
|
#
|
|
# Returns: Nothing on success
|
|
# If no background operation is active on this device, DeviceNotActive
|
|
#
|
|
# Since: 1.1
|
|
##
|
|
{ 'command': 'block-job-set-speed',
|
|
'data': { 'device': 'str', 'speed': 'int' } }
|
|
|
|
##
|
|
# @block-job-cancel:
|
|
#
|
|
# Stop an active background block operation.
|
|
#
|
|
# This command returns immediately after marking the active background block
|
|
# operation for cancellation. It is an error to call this command if no
|
|
# operation is in progress.
|
|
#
|
|
# The operation will cancel as soon as possible and then emit the
|
|
# BLOCK_JOB_CANCELLED event. Before that happens the job is still visible when
|
|
# enumerated using query-block-jobs.
|
|
#
|
|
# For streaming, the image file retains its backing file unless the streaming
|
|
# operation happens to complete just as it is being cancelled. A new streaming
|
|
# operation can be started at a later time to finish copying all data from the
|
|
# backing file.
|
|
#
|
|
# @device: the device name
|
|
#
|
|
# @force: #optional whether to allow cancellation of a paused job (default
|
|
# false). Since 1.3.
|
|
#
|
|
# Returns: Nothing on success
|
|
# If no background operation is active on this device, DeviceNotActive
|
|
#
|
|
# Since: 1.1
|
|
##
|
|
{ 'command': 'block-job-cancel', 'data': { 'device': 'str', '*force': 'bool' } }
|
|
|
|
##
|
|
# @block-job-pause:
|
|
#
|
|
# Pause an active background block operation.
|
|
#
|
|
# This command returns immediately after marking the active background block
|
|
# operation for pausing. It is an error to call this command if no
|
|
# operation is in progress. Pausing an already paused job has no cumulative
|
|
# effect; a single block-job-resume command will resume the job.
|
|
#
|
|
# The operation will pause as soon as possible. No event is emitted when
|
|
# the operation is actually paused. Cancelling a paused job automatically
|
|
# resumes it.
|
|
#
|
|
# @device: the device name
|
|
#
|
|
# Returns: Nothing on success
|
|
# If no background operation is active on this device, DeviceNotActive
|
|
#
|
|
# Since: 1.3
|
|
##
|
|
{ 'command': 'block-job-pause', 'data': { 'device': 'str' } }
|
|
|
|
##
|
|
# @block-job-resume:
|
|
#
|
|
# Resume an active background block operation.
|
|
#
|
|
# This command returns immediately after resuming a paused background block
|
|
# operation. It is an error to call this command if no operation is in
|
|
# progress. Resuming an already running job is not an error.
|
|
#
|
|
# This command also clears the error status of the job.
|
|
#
|
|
# @device: the device name
|
|
#
|
|
# Returns: Nothing on success
|
|
# If no background operation is active on this device, DeviceNotActive
|
|
#
|
|
# Since: 1.3
|
|
##
|
|
{ 'command': 'block-job-resume', 'data': { 'device': 'str' } }
|
|
|
|
##
|
|
# @block-job-complete:
|
|
#
|
|
# Manually trigger completion of an active background block operation. This
|
|
# is supported for drive mirroring, where it also switches the device to
|
|
# write to the target path only. The ability to complete is signaled with
|
|
# a BLOCK_JOB_READY event.
|
|
#
|
|
# This command completes an active background block operation synchronously.
|
|
# The ordering of this command's return with the BLOCK_JOB_COMPLETED event
|
|
# is not defined. Note that if an I/O error occurs during the processing of
|
|
# this command: 1) the command itself will fail; 2) the error will be processed
|
|
# according to the rerror/werror arguments that were specified when starting
|
|
# the operation.
|
|
#
|
|
# A cancelled or paused job cannot be completed.
|
|
#
|
|
# @device: the device name
|
|
#
|
|
# Returns: Nothing on success
|
|
# If no background operation is active on this device, DeviceNotActive
|
|
#
|
|
# Since: 1.3
|
|
##
|
|
{ 'command': 'block-job-complete', 'data': { 'device': 'str' } }
|
|
|
|
##
|
|
# @BlockdevDiscardOptions
|
|
#
|
|
# Determines how to handle discard requests.
|
|
#
|
|
# @ignore: Ignore the request
|
|
# @unmap: Forward as an unmap request
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'enum': 'BlockdevDiscardOptions',
|
|
'data': [ 'ignore', 'unmap' ] }
|
|
|
|
##
|
|
# @BlockdevDetectZeroesOptions
|
|
#
|
|
# Describes the operation mode for the automatic conversion of plain
|
|
# zero writes by the OS to driver specific optimized zero write commands.
|
|
#
|
|
# @off: Disabled (default)
|
|
# @on: Enabled
|
|
# @unmap: Enabled and even try to unmap blocks if possible. This requires
|
|
# also that @BlockdevDiscardOptions is set to unmap for this device.
|
|
#
|
|
# Since: 2.1
|
|
##
|
|
{ 'enum': 'BlockdevDetectZeroesOptions',
|
|
'data': [ 'off', 'on', 'unmap' ] }
|
|
|
|
##
|
|
# @BlockdevAioOptions
|
|
#
|
|
# Selects the AIO backend to handle I/O requests
|
|
#
|
|
# @threads: Use qemu's thread pool
|
|
# @native: Use native AIO backend (only Linux and Windows)
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'enum': 'BlockdevAioOptions',
|
|
'data': [ 'threads', 'native' ] }
|
|
|
|
##
|
|
# @BlockdevCacheOptions
|
|
#
|
|
# Includes cache-related options for block devices
|
|
#
|
|
# @writeback: #optional enables writeback mode for any caches (default: true)
|
|
# @direct: #optional enables use of O_DIRECT (bypass the host page cache;
|
|
# default: false)
|
|
# @no-flush: #optional ignore any flush requests for the device (default:
|
|
# false)
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'struct': 'BlockdevCacheOptions',
|
|
'data': { '*writeback': 'bool',
|
|
'*direct': 'bool',
|
|
'*no-flush': 'bool' } }
|
|
|
|
##
|
|
# @BlockdevDriver
|
|
#
|
|
# Drivers that are supported in block device operations.
|
|
#
|
|
# @host_device, @host_cdrom, @host_floppy: Since 2.1
|
|
# @host_floppy: deprecated since 2.3
|
|
#
|
|
# Since: 2.0
|
|
##
|
|
{ 'enum': 'BlockdevDriver',
|
|
'data': [ 'archipelago', 'blkdebug', 'blkverify', 'bochs', 'cloop',
|
|
'dmg', 'file', 'ftp', 'ftps', 'host_cdrom', 'host_device',
|
|
'host_floppy', 'http', 'https', 'null-aio', 'null-co', 'parallels',
|
|
'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'tftp', 'vdi', 'vhdx',
|
|
'vmdk', 'vpc', 'vvfat' ] }
|
|
|
|
##
|
|
# @BlockdevOptionsBase
|
|
#
|
|
# Options that are available for all block devices, independent of the block
|
|
# driver.
|
|
#
|
|
# @driver: block driver name
|
|
# @id: #optional id by which the new block device can be referred to.
|
|
# This is a required option on the top level of blockdev-add, and
|
|
# currently not allowed on any other level.
|
|
# @node-name: #optional the name of a block driver state node (Since 2.0)
|
|
# @discard: #optional discard-related options (default: ignore)
|
|
# @cache: #optional cache-related options
|
|
# @aio: #optional AIO backend (default: threads)
|
|
# @rerror: #optional how to handle read errors on the device
|
|
# (default: report)
|
|
# @werror: #optional how to handle write errors on the device
|
|
# (default: enospc)
|
|
# @read-only: #optional whether the block device should be read-only
|
|
# (default: false)
|
|
# @detect-zeroes: #optional detect and optimize zero writes (Since 2.1)
|
|
# (default: off)
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'struct': 'BlockdevOptionsBase',
|
|
'data': { 'driver': 'BlockdevDriver',
|
|
'*id': 'str',
|
|
'*node-name': 'str',
|
|
'*discard': 'BlockdevDiscardOptions',
|
|
'*cache': 'BlockdevCacheOptions',
|
|
'*aio': 'BlockdevAioOptions',
|
|
'*rerror': 'BlockdevOnError',
|
|
'*werror': 'BlockdevOnError',
|
|
'*read-only': 'bool',
|
|
'*detect-zeroes': 'BlockdevDetectZeroesOptions' } }
|
|
|
|
##
|
|
# @BlockdevOptionsFile
|
|
#
|
|
# Driver specific block device options for the file backend and similar
|
|
# protocols.
|
|
#
|
|
# @filename: path to the image file
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'struct': 'BlockdevOptionsFile',
|
|
'data': { 'filename': 'str' } }
|
|
|
|
##
|
|
# @BlockdevOptionsNull
|
|
#
|
|
# Driver specific block device options for the null backend.
|
|
#
|
|
# @size: #optional size of the device in bytes.
|
|
# @latency-ns: #optional emulated latency (in nanoseconds) in processing
|
|
# requests. Default to zero which completes requests immediately.
|
|
# (Since 2.4)
|
|
#
|
|
# Since: 2.2
|
|
##
|
|
{ 'struct': 'BlockdevOptionsNull',
|
|
'data': { '*size': 'int', '*latency-ns': 'uint64' } }
|
|
|
|
##
|
|
# @BlockdevOptionsVVFAT
|
|
#
|
|
# Driver specific block device options for the vvfat protocol.
|
|
#
|
|
# @dir: directory to be exported as FAT image
|
|
# @fat-type: #optional FAT type: 12, 16 or 32
|
|
# @floppy: #optional whether to export a floppy image (true) or
|
|
# partitioned hard disk (false; default)
|
|
# @label: #optional set the volume label, limited to 11 bytes. FAT16 and
|
|
# FAT32 traditionally have some restrictions on labels, which are
|
|
# ignored by most operating systems. Defaults to "QEMU VVFAT".
|
|
# (since 2.4)
|
|
# @rw: #optional whether to allow write operations (default: false)
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'struct': 'BlockdevOptionsVVFAT',
|
|
'data': { 'dir': 'str', '*fat-type': 'int', '*floppy': 'bool',
|
|
'*label': 'str', '*rw': 'bool' } }
|
|
|
|
##
|
|
# @BlockdevOptionsGenericFormat
|
|
#
|
|
# Driver specific block device options for image format that have no option
|
|
# besides their data source.
|
|
#
|
|
# @file: reference to or definition of the data source block device
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'struct': 'BlockdevOptionsGenericFormat',
|
|
'data': { 'file': 'BlockdevRef' } }
|
|
|
|
##
|
|
# @BlockdevOptionsGenericCOWFormat
|
|
#
|
|
# Driver specific block device options for image format that have no option
|
|
# besides their data source and an optional backing file.
|
|
#
|
|
# @backing: #optional reference to or definition of the backing file block
|
|
# device (if missing, taken from the image file content). It is
|
|
# allowed to pass an empty string here in order to disable the
|
|
# default backing file.
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'struct': 'BlockdevOptionsGenericCOWFormat',
|
|
'base': 'BlockdevOptionsGenericFormat',
|
|
'data': { '*backing': 'BlockdevRef' } }
|
|
|
|
##
|
|
# @Qcow2OverlapCheckMode
|
|
#
|
|
# General overlap check modes.
|
|
#
|
|
# @none: Do not perform any checks
|
|
#
|
|
# @constant: Perform only checks which can be done in constant time and
|
|
# without reading anything from disk
|
|
#
|
|
# @cached: Perform only checks which can be done without reading anything
|
|
# from disk
|
|
#
|
|
# @all: Perform all available overlap checks
|
|
#
|
|
# Since: 2.2
|
|
##
|
|
{ 'enum': 'Qcow2OverlapCheckMode',
|
|
'data': [ 'none', 'constant', 'cached', 'all' ] }
|
|
|
|
##
|
|
# @Qcow2OverlapCheckFlags
|
|
#
|
|
# Structure of flags for each metadata structure. Setting a field to 'true'
|
|
# makes qemu guard that structure against unintended overwriting. The default
|
|
# value is chosen according to the template given.
|
|
#
|
|
# @template: Specifies a template mode which can be adjusted using the other
|
|
# flags, defaults to 'cached'
|
|
#
|
|
# Since: 2.2
|
|
##
|
|
{ 'struct': 'Qcow2OverlapCheckFlags',
|
|
'data': { '*template': 'Qcow2OverlapCheckMode',
|
|
'*main-header': 'bool',
|
|
'*active-l1': 'bool',
|
|
'*active-l2': 'bool',
|
|
'*refcount-table': 'bool',
|
|
'*refcount-block': 'bool',
|
|
'*snapshot-table': 'bool',
|
|
'*inactive-l1': 'bool',
|
|
'*inactive-l2': 'bool' } }
|
|
|
|
##
|
|
# @Qcow2OverlapChecks
|
|
#
|
|
# Specifies which metadata structures should be guarded against unintended
|
|
# overwriting.
|
|
#
|
|
# @flags: set of flags for separate specification of each metadata structure
|
|
# type
|
|
#
|
|
# @mode: named mode which chooses a specific set of flags
|
|
#
|
|
# Since: 2.2
|
|
##
|
|
{ 'alternate': 'Qcow2OverlapChecks',
|
|
'data': { 'flags': 'Qcow2OverlapCheckFlags',
|
|
'mode': 'Qcow2OverlapCheckMode' } }
|
|
|
|
##
|
|
# @BlockdevOptionsQcow2
|
|
#
|
|
# Driver specific block device options for qcow2.
|
|
#
|
|
# @lazy-refcounts: #optional whether to enable the lazy refcounts
|
|
# feature (default is taken from the image file)
|
|
#
|
|
# @pass-discard-request: #optional whether discard requests to the qcow2
|
|
# device should be forwarded to the data source
|
|
#
|
|
# @pass-discard-snapshot: #optional whether discard requests for the data source
|
|
# should be issued when a snapshot operation (e.g.
|
|
# deleting a snapshot) frees clusters in the qcow2 file
|
|
#
|
|
# @pass-discard-other: #optional whether discard requests for the data source
|
|
# should be issued on other occasions where a cluster
|
|
# gets freed
|
|
#
|
|
# @overlap-check: #optional which overlap checks to perform for writes
|
|
# to the image, defaults to 'cached' (since 2.2)
|
|
#
|
|
# @cache-size: #optional the maximum total size of the L2 table and
|
|
# refcount block caches in bytes (since 2.2)
|
|
#
|
|
# @l2-cache-size: #optional the maximum size of the L2 table cache in
|
|
# bytes (since 2.2)
|
|
#
|
|
# @refcount-cache-size: #optional the maximum size of the refcount block cache
|
|
# in bytes (since 2.2)
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'struct': 'BlockdevOptionsQcow2',
|
|
'base': 'BlockdevOptionsGenericCOWFormat',
|
|
'data': { '*lazy-refcounts': 'bool',
|
|
'*pass-discard-request': 'bool',
|
|
'*pass-discard-snapshot': 'bool',
|
|
'*pass-discard-other': 'bool',
|
|
'*overlap-check': 'Qcow2OverlapChecks',
|
|
'*cache-size': 'int',
|
|
'*l2-cache-size': 'int',
|
|
'*refcount-cache-size': 'int' } }
|
|
|
|
|
|
##
|
|
# @BlockdevOptionsArchipelago
|
|
#
|
|
# Driver specific block device options for Archipelago.
|
|
#
|
|
# @volume: Name of the Archipelago volume image
|
|
#
|
|
# @mport: #optional The port number on which mapperd is
|
|
# listening. This is optional
|
|
# and if not specified, QEMU will make Archipelago
|
|
# use the default port (1001).
|
|
#
|
|
# @vport: #optional The port number on which vlmcd is
|
|
# listening. This is optional
|
|
# and if not specified, QEMU will make Archipelago
|
|
# use the default port (501).
|
|
#
|
|
# @segment: #optional The name of the shared memory segment
|
|
# Archipelago stack is using. This is optional
|
|
# and if not specified, QEMU will make Archipelago
|
|
# use the default value, 'archipelago'.
|
|
# Since: 2.2
|
|
##
|
|
{ 'struct': 'BlockdevOptionsArchipelago',
|
|
'data': { 'volume': 'str',
|
|
'*mport': 'int',
|
|
'*vport': 'int',
|
|
'*segment': 'str' } }
|
|
|
|
|
|
##
|
|
# @BlkdebugEvent
|
|
#
|
|
# Trigger events supported by blkdebug.
|
|
##
|
|
{ 'enum': 'BlkdebugEvent',
|
|
'data': [ 'l1_update', 'l1_grow.alloc_table', 'l1_grow.write_table',
|
|
'l1_grow.activate_table', 'l2_load', 'l2_update',
|
|
'l2_update_compressed', 'l2_alloc.cow_read', 'l2_alloc.write',
|
|
'read_aio', 'read_backing_aio', 'read_compressed', 'write_aio',
|
|
'write_compressed', 'vmstate_load', 'vmstate_save', 'cow_read',
|
|
'cow_write', 'reftable_load', 'reftable_grow', 'reftable_update',
|
|
'refblock_load', 'refblock_update', 'refblock_update_part',
|
|
'refblock_alloc', 'refblock_alloc.hookup', 'refblock_alloc.write',
|
|
'refblock_alloc.write_blocks', 'refblock_alloc.write_table',
|
|
'refblock_alloc.switch_table', 'cluster_alloc',
|
|
'cluster_alloc_bytes', 'cluster_free', 'flush_to_os',
|
|
'flush_to_disk', 'pwritev_rmw.head', 'pwritev_rmw.after_head',
|
|
'pwritev_rmw.tail', 'pwritev_rmw.after_tail', 'pwritev',
|
|
'pwritev_zero', 'pwritev_done', 'empty_image_prepare' ] }
|
|
|
|
##
|
|
# @BlkdebugInjectErrorOptions
|
|
#
|
|
# Describes a single error injection for blkdebug.
|
|
#
|
|
# @event: trigger event
|
|
#
|
|
# @state: #optional the state identifier blkdebug needs to be in to
|
|
# actually trigger the event; defaults to "any"
|
|
#
|
|
# @errno: #optional error identifier (errno) to be returned; defaults to
|
|
# EIO
|
|
#
|
|
# @sector: #optional specifies the sector index which has to be affected
|
|
# in order to actually trigger the event; defaults to "any
|
|
# sector"
|
|
#
|
|
# @once: #optional disables further events after this one has been
|
|
# triggered; defaults to false
|
|
#
|
|
# @immediately: #optional fail immediately; defaults to false
|
|
#
|
|
# Since: 2.0
|
|
##
|
|
{ 'struct': 'BlkdebugInjectErrorOptions',
|
|
'data': { 'event': 'BlkdebugEvent',
|
|
'*state': 'int',
|
|
'*errno': 'int',
|
|
'*sector': 'int',
|
|
'*once': 'bool',
|
|
'*immediately': 'bool' } }
|
|
|
|
##
|
|
# @BlkdebugSetStateOptions
|
|
#
|
|
# Describes a single state-change event for blkdebug.
|
|
#
|
|
# @event: trigger event
|
|
#
|
|
# @state: #optional the current state identifier blkdebug needs to be in;
|
|
# defaults to "any"
|
|
#
|
|
# @new_state: the state identifier blkdebug is supposed to assume if
|
|
# this event is triggered
|
|
#
|
|
# Since: 2.0
|
|
##
|
|
{ 'struct': 'BlkdebugSetStateOptions',
|
|
'data': { 'event': 'BlkdebugEvent',
|
|
'*state': 'int',
|
|
'new_state': 'int' } }
|
|
|
|
##
|
|
# @BlockdevOptionsBlkdebug
|
|
#
|
|
# Driver specific block device options for blkdebug.
|
|
#
|
|
# @image: underlying raw block device (or image file)
|
|
#
|
|
# @config: #optional filename of the configuration file
|
|
#
|
|
# @align: #optional required alignment for requests in bytes
|
|
#
|
|
# @inject-error: #optional array of error injection descriptions
|
|
#
|
|
# @set-state: #optional array of state-change descriptions
|
|
#
|
|
# Since: 2.0
|
|
##
|
|
{ 'struct': 'BlockdevOptionsBlkdebug',
|
|
'data': { 'image': 'BlockdevRef',
|
|
'*config': 'str',
|
|
'*align': 'int',
|
|
'*inject-error': ['BlkdebugInjectErrorOptions'],
|
|
'*set-state': ['BlkdebugSetStateOptions'] } }
|
|
|
|
##
|
|
# @BlockdevOptionsBlkverify
|
|
#
|
|
# Driver specific block device options for blkverify.
|
|
#
|
|
# @test: block device to be tested
|
|
#
|
|
# @raw: raw image used for verification
|
|
#
|
|
# Since: 2.0
|
|
##
|
|
{ 'struct': 'BlockdevOptionsBlkverify',
|
|
'data': { 'test': 'BlockdevRef',
|
|
'raw': 'BlockdevRef' } }
|
|
|
|
##
|
|
# @QuorumReadPattern
|
|
#
|
|
# An enumeration of quorum read patterns.
|
|
#
|
|
# @quorum: read all the children and do a quorum vote on reads
|
|
#
|
|
# @fifo: read only from the first child that has not failed
|
|
#
|
|
# Since: 2.2
|
|
##
|
|
{ 'enum': 'QuorumReadPattern', 'data': [ 'quorum', 'fifo' ] }
|
|
|
|
##
|
|
# @BlockdevOptionsQuorum
|
|
#
|
|
# Driver specific block device options for Quorum
|
|
#
|
|
# @blkverify: #optional true if the driver must print content mismatch
|
|
# set to false by default
|
|
#
|
|
# @children: the children block devices to use
|
|
#
|
|
# @vote-threshold: the vote limit under which a read will fail
|
|
#
|
|
# @rewrite-corrupted: #optional rewrite corrupted data when quorum is reached
|
|
# (Since 2.1)
|
|
#
|
|
# @read-pattern: #optional choose read pattern and set to quorum by default
|
|
# (Since 2.2)
|
|
#
|
|
# Since: 2.0
|
|
##
|
|
{ 'struct': 'BlockdevOptionsQuorum',
|
|
'data': { '*blkverify': 'bool',
|
|
'children': [ 'BlockdevRef' ],
|
|
'vote-threshold': 'int',
|
|
'*rewrite-corrupted': 'bool',
|
|
'*read-pattern': 'QuorumReadPattern' } }
|
|
|
|
##
|
|
# @BlockdevOptions
|
|
#
|
|
# Options for creating a block device.
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'union': 'BlockdevOptions',
|
|
'base': 'BlockdevOptionsBase',
|
|
'discriminator': 'driver',
|
|
'data': {
|
|
'archipelago':'BlockdevOptionsArchipelago',
|
|
'blkdebug': 'BlockdevOptionsBlkdebug',
|
|
'blkverify': 'BlockdevOptionsBlkverify',
|
|
'bochs': 'BlockdevOptionsGenericFormat',
|
|
'cloop': 'BlockdevOptionsGenericFormat',
|
|
'dmg': 'BlockdevOptionsGenericFormat',
|
|
'file': 'BlockdevOptionsFile',
|
|
'ftp': 'BlockdevOptionsFile',
|
|
'ftps': 'BlockdevOptionsFile',
|
|
# TODO gluster: Wait for structured options
|
|
'host_cdrom': 'BlockdevOptionsFile',
|
|
'host_device':'BlockdevOptionsFile',
|
|
'host_floppy':'BlockdevOptionsFile',
|
|
'http': 'BlockdevOptionsFile',
|
|
'https': 'BlockdevOptionsFile',
|
|
# TODO iscsi: Wait for structured options
|
|
# TODO nbd: Should take InetSocketAddress for 'host'?
|
|
# TODO nfs: Wait for structured options
|
|
'null-aio': 'BlockdevOptionsNull',
|
|
'null-co': 'BlockdevOptionsNull',
|
|
'parallels': 'BlockdevOptionsGenericFormat',
|
|
'qcow2': 'BlockdevOptionsQcow2',
|
|
'qcow': 'BlockdevOptionsGenericCOWFormat',
|
|
'qed': 'BlockdevOptionsGenericCOWFormat',
|
|
'quorum': 'BlockdevOptionsQuorum',
|
|
'raw': 'BlockdevOptionsGenericFormat',
|
|
# TODO rbd: Wait for structured options
|
|
# TODO sheepdog: Wait for structured options
|
|
# TODO ssh: Should take InetSocketAddress for 'host'?
|
|
'tftp': 'BlockdevOptionsFile',
|
|
'vdi': 'BlockdevOptionsGenericFormat',
|
|
'vhdx': 'BlockdevOptionsGenericFormat',
|
|
'vmdk': 'BlockdevOptionsGenericCOWFormat',
|
|
'vpc': 'BlockdevOptionsGenericFormat',
|
|
'vvfat': 'BlockdevOptionsVVFAT'
|
|
} }
|
|
|
|
##
|
|
# @BlockdevRef
|
|
#
|
|
# Reference to a block device.
|
|
#
|
|
# @definition: defines a new block device inline
|
|
# @reference: references the ID of an existing block device. An
|
|
# empty string means that no block device should be
|
|
# referenced.
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'alternate': 'BlockdevRef',
|
|
'data': { 'definition': 'BlockdevOptions',
|
|
'reference': 'str' } }
|
|
|
|
##
|
|
# @blockdev-add:
|
|
#
|
|
# Creates a new block device.
|
|
#
|
|
# This command is still a work in progress. It doesn't support all
|
|
# block drivers, it lacks a matching blockdev-del, and more. Stay
|
|
# away from it unless you want to help with its development.
|
|
#
|
|
# @options: block device options for the new device
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'command': 'blockdev-add', 'data': { 'options': 'BlockdevOptions' } }
|
|
|
|
|
|
##
|
|
# @BlockErrorAction
|
|
#
|
|
# An enumeration of action that has been taken when a DISK I/O occurs
|
|
#
|
|
# @ignore: error has been ignored
|
|
#
|
|
# @report: error has been reported to the device
|
|
#
|
|
# @stop: error caused VM to be stopped
|
|
#
|
|
# Since: 2.1
|
|
##
|
|
{ 'enum': 'BlockErrorAction',
|
|
'data': [ 'ignore', 'report', 'stop' ] }
|
|
|
|
|
|
##
|
|
# @BLOCK_IMAGE_CORRUPTED
|
|
#
|
|
# Emitted when a corruption has been detected in a disk image
|
|
#
|
|
# @device: device name. This is always present for compatibility
|
|
# reasons, but it can be empty ("") if the image does not
|
|
# have a device name associated.
|
|
#
|
|
# @node-name: #optional node name (Since: 2.4)
|
|
#
|
|
# @msg: informative message for human consumption, such as the kind of
|
|
# corruption being detected. It should not be parsed by machine as it is
|
|
# not guaranteed to be stable
|
|
#
|
|
# @offset: #optional, if the corruption resulted from an image access, this is
|
|
# the host's access offset into the image
|
|
#
|
|
# @size: #optional, if the corruption resulted from an image access, this is
|
|
# the access size
|
|
#
|
|
# fatal: if set, the image is marked corrupt and therefore unusable after this
|
|
# event and must be repaired (Since 2.2; before, every
|
|
# BLOCK_IMAGE_CORRUPTED event was fatal)
|
|
#
|
|
# Since: 1.7
|
|
##
|
|
{ 'event': 'BLOCK_IMAGE_CORRUPTED',
|
|
'data': { 'device' : 'str',
|
|
'*node-name' : 'str',
|
|
'msg' : 'str',
|
|
'*offset' : 'int',
|
|
'*size' : 'int',
|
|
'fatal' : 'bool' } }
|
|
|
|
##
|
|
# @BLOCK_IO_ERROR
|
|
#
|
|
# Emitted when a disk I/O error occurs
|
|
#
|
|
# @device: device name
|
|
#
|
|
# @operation: I/O operation
|
|
#
|
|
# @action: action that has been taken
|
|
#
|
|
# @nospace: #optional true if I/O error was caused due to a no-space
|
|
# condition. This key is only present if query-block's
|
|
# io-status is present, please see query-block documentation
|
|
# for more information (since: 2.2)
|
|
#
|
|
# @reason: human readable string describing the error cause.
|
|
# (This field is a debugging aid for humans, it should not
|
|
# be parsed by applications) (since: 2.2)
|
|
#
|
|
# Note: If action is "stop", a STOP event will eventually follow the
|
|
# BLOCK_IO_ERROR event
|
|
#
|
|
# Since: 0.13.0
|
|
##
|
|
{ 'event': 'BLOCK_IO_ERROR',
|
|
'data': { 'device': 'str', 'operation': 'IoOperationType',
|
|
'action': 'BlockErrorAction', '*nospace': 'bool',
|
|
'reason': 'str' } }
|
|
|
|
##
|
|
# @BLOCK_JOB_COMPLETED
|
|
#
|
|
# Emitted when a block job has completed
|
|
#
|
|
# @type: job type
|
|
#
|
|
# @device: device name
|
|
#
|
|
# @len: maximum progress value
|
|
#
|
|
# @offset: current progress value. On success this is equal to len.
|
|
# On failure this is less than len
|
|
#
|
|
# @speed: rate limit, bytes per second
|
|
#
|
|
# @error: #optional, error message. Only present on failure. This field
|
|
# contains a human-readable error message. There are no semantics
|
|
# other than that streaming has failed and clients should not try to
|
|
# interpret the error string
|
|
#
|
|
# Since: 1.1
|
|
##
|
|
{ 'event': 'BLOCK_JOB_COMPLETED',
|
|
'data': { 'type' : 'BlockJobType',
|
|
'device': 'str',
|
|
'len' : 'int',
|
|
'offset': 'int',
|
|
'speed' : 'int',
|
|
'*error': 'str' } }
|
|
|
|
##
|
|
# @BLOCK_JOB_CANCELLED
|
|
#
|
|
# Emitted when a block job has been cancelled
|
|
#
|
|
# @type: job type
|
|
#
|
|
# @device: device name
|
|
#
|
|
# @len: maximum progress value
|
|
#
|
|
# @offset: current progress value. On success this is equal to len.
|
|
# On failure this is less than len
|
|
#
|
|
# @speed: rate limit, bytes per second
|
|
#
|
|
# Since: 1.1
|
|
##
|
|
{ 'event': 'BLOCK_JOB_CANCELLED',
|
|
'data': { 'type' : 'BlockJobType',
|
|
'device': 'str',
|
|
'len' : 'int',
|
|
'offset': 'int',
|
|
'speed' : 'int' } }
|
|
|
|
##
|
|
# @BLOCK_JOB_ERROR
|
|
#
|
|
# Emitted when a block job encounters an error
|
|
#
|
|
# @device: device name
|
|
#
|
|
# @operation: I/O operation
|
|
#
|
|
# @action: action that has been taken
|
|
#
|
|
# Since: 1.3
|
|
##
|
|
{ 'event': 'BLOCK_JOB_ERROR',
|
|
'data': { 'device' : 'str',
|
|
'operation': 'IoOperationType',
|
|
'action' : 'BlockErrorAction' } }
|
|
|
|
##
|
|
# @BLOCK_JOB_READY
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#
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# Emitted when a block job is ready to complete
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#
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# @type: job type
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|
#
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|
# @device: device name
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|
#
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# @len: maximum progress value
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|
#
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|
# @offset: current progress value. On success this is equal to len.
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# On failure this is less than len
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|
#
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# @speed: rate limit, bytes per second
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|
#
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# Note: The "ready to complete" status is always reset by a @BLOCK_JOB_ERROR
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|
# event
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|
#
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|
# Since: 1.3
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|
##
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|
{ 'event': 'BLOCK_JOB_READY',
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'data': { 'type' : 'BlockJobType',
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'device': 'str',
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'len' : 'int',
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'offset': 'int',
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|
'speed' : 'int' } }
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|
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|
# @PreallocMode
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|
#
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|
# Preallocation mode of QEMU image file
|
|
#
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|
# @off: no preallocation
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|
# @metadata: preallocate only for metadata
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|
# @falloc: like @full preallocation but allocate disk space by
|
|
# posix_fallocate() rather than writing zeros.
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|
# @full: preallocate all data by writing zeros to device to ensure disk
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|
# space is really available. @full preallocation also sets up
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|
# metadata correctly.
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|
#
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|
# Since 2.2
|
|
##
|
|
{ 'enum': 'PreallocMode',
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|
'data': [ 'off', 'metadata', 'falloc', 'full' ] }
|
|
|
|
##
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|
# @BLOCK_WRITE_THRESHOLD
|
|
#
|
|
# Emitted when writes on block device reaches or exceeds the
|
|
# configured write threshold. For thin-provisioned devices, this
|
|
# means the device should be extended to avoid pausing for
|
|
# disk exhaustion.
|
|
# The event is one shot. Once triggered, it needs to be
|
|
# re-registered with another block-set-threshold command.
|
|
#
|
|
# @node-name: graph node name on which the threshold was exceeded.
|
|
#
|
|
# @amount-exceeded: amount of data which exceeded the threshold, in bytes.
|
|
#
|
|
# @write-threshold: last configured threshold, in bytes.
|
|
#
|
|
# Since: 2.3
|
|
##
|
|
{ 'event': 'BLOCK_WRITE_THRESHOLD',
|
|
'data': { 'node-name': 'str',
|
|
'amount-exceeded': 'uint64',
|
|
'write-threshold': 'uint64' } }
|
|
|
|
##
|
|
# @block-set-write-threshold
|
|
#
|
|
# Change the write threshold for a block drive. An event will be delivered
|
|
# if a write to this block drive crosses the configured threshold.
|
|
# This is useful to transparently resize thin-provisioned drives without
|
|
# the guest OS noticing.
|
|
#
|
|
# @node-name: graph node name on which the threshold must be set.
|
|
#
|
|
# @write-threshold: configured threshold for the block device, bytes.
|
|
# Use 0 to disable the threshold.
|
|
#
|
|
# Since: 2.3
|
|
##
|
|
{ 'command': 'block-set-write-threshold',
|
|
'data': { 'node-name': 'str', 'write-threshold': 'uint64' } }
|