qapi: Extract qapi/block-core.json definitions
Signed-off-by: Benoit Canet <benoit@irqsave.net
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 11bd8c2..7215e48 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -4,3 +4,1409 @@
# QAPI common definitions
{ 'include': 'common.json' }
+
+##
+# @SnapshotInfo
+#
+# @id: unique snapshot id
+#
+# @name: user chosen name
+#
+# @vm-state-size: size of the VM state
+#
+# @date-sec: UTC date of the snapshot in seconds
+#
+# @date-nsec: fractional part in nano seconds to be used with date-sec
+#
+# @vm-clock-sec: VM clock relative to boot in seconds
+#
+# @vm-clock-nsec: fractional part in nano seconds to be used with vm-clock-sec
+#
+# Since: 1.3
+#
+##
+
+{ 'type': 'SnapshotInfo',
+ 'data': { 'id': 'str', 'name': 'str', 'vm-state-size': 'int',
+ 'date-sec': 'int', 'date-nsec': 'int',
+ 'vm-clock-sec': 'int', 'vm-clock-nsec': 'int' } }
+
+##
+# @ImageInfoSpecificQCow2:
+#
+# @compat: compatibility level
+#
+# @lazy-refcounts: #optional on or off; only valid for compat >= 1.1
+#
+# Since: 1.7
+##
+{ 'type': 'ImageInfoSpecificQCow2',
+ 'data': {
+ 'compat': 'str',
+ '*lazy-refcounts': 'bool'
+ } }
+
+##
+# @ImageInfoSpecificVmdk:
+#
+# @create-type: The create type of VMDK image
+#
+# @cid: Content id of image
+#
+# @parent-cid: Parent VMDK image's cid
+#
+# @extents: List of extent files
+#
+# Since: 1.7
+##
+{ 'type': 'ImageInfoSpecificVmdk',
+ 'data': {
+ 'create-type': 'str',
+ 'cid': 'int',
+ 'parent-cid': 'int',
+ 'extents': ['ImageInfo']
+ } }
+
+##
+# @ImageInfoSpecific:
+#
+# A discriminated record of image format specific information structures.
+#
+# Since: 1.7
+##
+
+{ 'union': 'ImageInfoSpecific',
+ 'data': {
+ 'qcow2': 'ImageInfoSpecificQCow2',
+ 'vmdk': 'ImageInfoSpecificVmdk'
+ } }
+
+##
+# @ImageInfo:
+#
+# Information about a QEMU image file
+#
+# @filename: name of the image file
+#
+# @format: format of the image file
+#
+# @virtual-size: maximum capacity in bytes of the image
+#
+# @actual-size: #optional actual size on disk in bytes of the image
+#
+# @dirty-flag: #optional true if image is not cleanly closed
+#
+# @cluster-size: #optional size of a cluster in bytes
+#
+# @encrypted: #optional true if the image is encrypted
+#
+# @compressed: #optional true if the image is compressed (Since 1.7)
+#
+# @backing-filename: #optional name of the backing file
+#
+# @full-backing-filename: #optional full path of the backing file
+#
+# @backing-filename-format: #optional the format of the backing file
+#
+# @snapshots: #optional list of VM snapshots
+#
+# @backing-image: #optional info of the backing image (since 1.6)
+#
+# @format-specific: #optional structure supplying additional format-specific
+# information (since 1.7)
+#
+# Since: 1.3
+#
+##
+
+{ 'type': 'ImageInfo',
+ 'data': {'filename': 'str', 'format': 'str', '*dirty-flag': 'bool',
+ '*actual-size': 'int', 'virtual-size': 'int',
+ '*cluster-size': 'int', '*encrypted': 'bool', '*compressed': 'bool',
+ '*backing-filename': 'str', '*full-backing-filename': 'str',
+ '*backing-filename-format': 'str', '*snapshots': ['SnapshotInfo'],
+ '*backing-image': 'ImageInfo',
+ '*format-specific': 'ImageInfoSpecific' } }
+
+##
+# @ImageCheck:
+#
+# Information about a QEMU image file check
+#
+# @filename: name of the image file checked
+#
+# @format: format of the image file checked
+#
+# @check-errors: number of unexpected errors occurred during check
+#
+# @image-end-offset: #optional offset (in bytes) where the image ends, this
+# field is present if the driver for the image format
+# supports it
+#
+# @corruptions: #optional number of corruptions found during the check if any
+#
+# @leaks: #optional number of leaks found during the check if any
+#
+# @corruptions-fixed: #optional number of corruptions fixed during the check
+# if any
+#
+# @leaks-fixed: #optional number of leaks fixed during the check if any
+#
+# @total-clusters: #optional total number of clusters, this field is present
+# if the driver for the image format supports it
+#
+# @allocated-clusters: #optional total number of allocated clusters, this
+# field is present if the driver for the image format
+# supports it
+#
+# @fragmented-clusters: #optional total number of fragmented clusters, this
+# field is present if the driver for the image format
+# supports it
+#
+# @compressed-clusters: #optional total number of compressed clusters, this
+# field is present if the driver for the image format
+# supports it
+#
+# Since: 1.4
+#
+##
+
+{ 'type': 'ImageCheck',
+ 'data': {'filename': 'str', 'format': 'str', 'check-errors': 'int',
+ '*image-end-offset': 'int', '*corruptions': 'int', '*leaks': 'int',
+ '*corruptions-fixed': 'int', '*leaks-fixed': 'int',
+ '*total-clusters': 'int', '*allocated-clusters': 'int',
+ '*fragmented-clusters': 'int', '*compressed-clusters': 'int' } }
+
+##
+# @BlockDeviceInfo:
+#
+# Information about the backing device for a block device.
+#
+# @file: the filename of the backing device
+#
+# @node-name: #optional the name of the block driver node (Since 2.0)
+#
+# @ro: true if the backing device was open read-only
+#
+# @drv: the name of the block format used to open the backing device. As of
+# 0.14.0 this can be: 'blkdebug', 'bochs', 'cloop', 'cow', 'dmg',
+# 'file', 'file', 'ftp', 'ftps', 'host_cdrom', 'host_device',
+# 'host_floppy', 'http', 'https', 'nbd', 'parallels', 'qcow',
+# 'qcow2', 'raw', 'tftp', 'vdi', 'vmdk', 'vpc', 'vvfat'
+#
+# @backing_file: #optional the name of the backing file (for copy-on-write)
+#
+# @backing_file_depth: number of files in the backing file chain (since: 1.2)
+#
+# @encrypted: true if the backing device is encrypted
+#
+# @encryption_key_missing: true if the backing device is encrypted but an
+# valid encryption key is missing
+#
+# @detect_zeroes: detect and optimize zero writes (Since 2.1)
+#
+# @bps: total throughput limit in bytes per second is specified
+#
+# @bps_rd: read throughput limit in bytes per second is specified
+#
+# @bps_wr: write throughput limit in bytes per second is specified
+#
+# @iops: total I/O operations per second is specified
+#
+# @iops_rd: read I/O operations per second is specified
+#
+# @iops_wr: write I/O operations per second is specified
+#
+# @image: the info of image used (since: 1.6)
+#
+# @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)
+#
+# Since: 0.14.0
+#
+##
+{ 'type': 'BlockDeviceInfo',
+ 'data': { 'file': 'str', '*node-name': 'str', 'ro': 'bool', 'drv': 'str',
+ '*backing_file': 'str', 'backing_file_depth': 'int',
+ 'encrypted': 'bool', 'encryption_key_missing': 'bool',
+ 'detect_zeroes': 'BlockdevDetectZeroesOptions',
+ 'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int',
+ 'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
+ 'image': 'ImageInfo',
+ '*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' } }
+
+##
+# @BlockDeviceIoStatus:
+#
+# An enumeration of block device I/O status.
+#
+# @ok: The last I/O operation has succeeded
+#
+# @failed: The last I/O operation has failed
+#
+# @nospace: The last I/O operation has failed due to a no-space condition
+#
+# Since: 1.0
+##
+{ 'enum': 'BlockDeviceIoStatus', 'data': [ 'ok', 'failed', 'nospace' ] }
+
+##
+# @BlockDeviceMapEntry:
+#
+# Entry in the metadata map of the device (returned by "qemu-img map")
+#
+# @start: Offset in the image of the first byte described by this entry
+# (in bytes)
+#
+# @length: Length of the range described by this entry (in bytes)
+#
+# @depth: Number of layers (0 = top image, 1 = top image's backing file, etc.)
+# before reaching one for which the range is allocated. The value is
+# in the range 0 to the depth of the image chain - 1.
+#
+# @zero: the sectors in this range read as zeros
+#
+# @data: reading the image will actually read data from a file (in particular,
+# if @offset is present this means that the sectors are not simply
+# preallocated, but contain actual data in raw format)
+#
+# @offset: if present, the image file stores the data for this range in
+# raw format at the given offset.
+#
+# Since 1.7
+##
+{ 'type': 'BlockDeviceMapEntry',
+ 'data': { 'start': 'int', 'length': 'int', 'depth': 'int', 'zero': 'bool',
+ 'data': 'bool', '*offset': 'int' } }
+
+##
+# @BlockDirtyInfo:
+#
+# Block dirty bitmap information.
+#
+# @count: number of dirty bytes according to the dirty bitmap
+#
+# @granularity: granularity of the dirty bitmap in bytes (since 1.4)
+#
+# Since: 1.3
+##
+{ 'type': 'BlockDirtyInfo',
+ 'data': {'count': 'int', 'granularity': 'int'} }
+
+##
+# @BlockInfo:
+#
+# Block device information. This structure describes a virtual device and
+# the backing device associated with it.
+#
+# @device: The device name associated with the virtual device.
+#
+# @type: This field is returned only for compatibility reasons, it should
+# not be used (always returns 'unknown')
+#
+# @removable: True if the device supports removable media.
+#
+# @locked: True if the guest has locked this device from having its media
+# removed
+#
+# @tray_open: #optional True if the device has a tray and it is open
+# (only present if removable is true)
+#
+# @dirty-bitmaps: #optional dirty bitmaps information (only present if the
+# driver has one or more dirty bitmaps) (Since 2.0)
+#
+# @io-status: #optional @BlockDeviceIoStatus. Only present if the device
+# supports it and the VM is configured to stop on errors
+#
+# @inserted: #optional @BlockDeviceInfo describing the device if media is
+# present
+#
+# Since: 0.14.0
+##
+{ 'type': 'BlockInfo',
+ 'data': {'device': 'str', 'type': 'str', 'removable': 'bool',
+ 'locked': 'bool', '*inserted': 'BlockDeviceInfo',
+ '*tray_open': 'bool', '*io-status': 'BlockDeviceIoStatus',
+ '*dirty-bitmaps': ['BlockDirtyInfo'] } }
+
+##
+# @query-block:
+#
+# Get a list of BlockInfo for all virtual block devices.
+#
+# Returns: a list of @BlockInfo describing each virtual block device
+#
+# Since: 0.14.0
+##
+{ 'command': 'query-block', 'returns': ['BlockInfo'] }
+
+##
+# @BlockDeviceStats:
+#
+# Statistics of a virtual block device or a block backing device.
+#
+# @rd_bytes: The number of bytes read by the device.
+#
+# @wr_bytes: The number of bytes written by the device.
+#
+# @rd_operations: The number of read operations performed by the device.
+#
+# @wr_operations: The number of write operations performed by the device.
+#
+# @flush_operations: The number of cache flush operations performed by the
+# device (since 0.15.0)
+#
+# @flush_total_time_ns: Total time spend on cache flushes in nano-seconds
+# (since 0.15.0).
+#
+# @wr_total_time_ns: Total time spend on writes in nano-seconds (since 0.15.0).
+#
+# @rd_total_time_ns: Total_time_spend on reads in nano-seconds (since 0.15.0).
+#
+# @wr_highest_offset: The offset after the greatest byte written to the
+# device. The intended use of this information is for
+# growable sparse files (like qcow2) that are used on top
+# of a physical device.
+#
+# Since: 0.14.0
+##
+{ 'type': 'BlockDeviceStats',
+ 'data': {'rd_bytes': 'int', 'wr_bytes': 'int', 'rd_operations': 'int',
+ 'wr_operations': 'int', 'flush_operations': 'int',
+ 'flush_total_time_ns': 'int', 'wr_total_time_ns': 'int',
+ 'rd_total_time_ns': 'int', 'wr_highest_offset': 'int' } }
+
+##
+# @BlockStats:
+#
+# Statistics of a virtual block device or a block backing device.
+#
+# @device: #optional If the stats are for a virtual block device, the name
+# corresponding to the virtual block device.
+#
+# @stats: A @BlockDeviceStats for the device.
+#
+# @parent: #optional This describes the file block device if it has one.
+#
+# @backing: #optional This describes the backing block device if it has one.
+# (Since 2.0)
+#
+# Since: 0.14.0
+##
+{ 'type': 'BlockStats',
+ 'data': {'*device': 'str', 'stats': 'BlockDeviceStats',
+ '*parent': 'BlockStats',
+ '*backing': 'BlockStats'} }
+
+##
+# @query-blockstats:
+#
+# Query the @BlockStats for all virtual block devices.
+#
+# Returns: A list of @BlockStats for each virtual block devices.
+#
+# Since: 0.14.0
+##
+{ 'command': 'query-blockstats', '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
+#
+# Since: 1.3
+##
+{ 'enum': 'MirrorSyncMode',
+ 'data': ['top', 'full', 'none'] }
+
+##
+# @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)
+#
+# Since: 1.1
+##
+{ 'type': 'BlockJobInfo',
+ 'data': {'type': 'str', 'device': 'str', 'len': 'int',
+ 'offset': 'int', 'busy': 'bool', 'paused': 'bool', 'speed': 'int',
+ 'io-status': 'BlockDeviceIoStatus'} }
+
+##
+# @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'.
+##
+{ 'type': '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, 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
+#
+# @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
+##
+{ 'type': 'DriveBackup',
+ 'data': { 'device': 'str', 'target': 'str', '*format': 'str',
+ 'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
+ '*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' }
+
+##
+# @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: The file name of the backing image within the image chain,
+# which contains the topmost data to be committed down.
+#
+# 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',
+ '*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' }
+
+##
+# @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
+#
+# @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',
+ 'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
+ '*speed': 'int', '*granularity': 'uint32',
+ '*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
+ '*on-target-error': 'BlockdevOnError' } }
+
+##
+# @block_set_io_throttle:
+#
+# Change I/O throttle limits for a block drive.
+#
+# @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)
+#
+# 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' } }
+
+##
+# @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
+#
+# @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', '*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
+##
+{ 'type': '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
+#
+# Since: 2.0
+##
+{ 'enum': 'BlockdevDriver',
+ 'data': [ 'file', 'host_device', 'host_cdrom', 'host_floppy',
+ 'http', 'https', 'ftp', 'ftps', 'tftp', 'vvfat', 'blkdebug',
+ 'blkverify', 'bochs', 'cloop', 'cow', 'dmg', 'parallels', 'qcow',
+ 'qcow2', 'qed', 'raw', 'vdi', 'vhdx', 'vmdk', 'vpc', 'quorum' ] }
+
+##
+# @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
+##
+{ 'type': '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
+##
+{ 'type': 'BlockdevOptionsFile',
+ 'data': { 'filename': 'str' } }
+
+##
+# @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)
+# @rw: #optional whether to allow write operations (default: false)
+#
+# Since: 1.7
+##
+{ 'type': 'BlockdevOptionsVVFAT',
+ 'data': { 'dir': 'str', '*fat-type': 'int', '*floppy': 'bool',
+ '*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
+##
+{ 'type': '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
+##
+{ 'type': 'BlockdevOptionsGenericCOWFormat',
+ 'base': 'BlockdevOptionsGenericFormat',
+ 'data': { '*backing': 'BlockdevRef' } }
+
+##
+# @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
+#
+# Since: 1.7
+##
+{ 'type': 'BlockdevOptionsQcow2',
+ 'base': 'BlockdevOptionsGenericCOWFormat',
+ 'data': { '*lazy-refcounts': 'bool',
+ '*pass-discard-request': 'bool',
+ '*pass-discard-snapshot': 'bool',
+ '*pass-discard-other': 'bool' } }
+
+##
+# @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' ] }
+
+##
+# @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
+##
+{ 'type': '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
+##
+{ 'type': '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
+##
+{ 'type': '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
+##
+{ 'type': 'BlockdevOptionsBlkverify',
+ 'data': { 'test': 'BlockdevRef',
+ 'raw': 'BlockdevRef' } }
+
+##
+# @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
+#
+# Since: 2.0
+##
+{ 'type': 'BlockdevOptionsQuorum',
+ 'data': { '*blkverify': 'bool',
+ 'children': [ 'BlockdevRef' ],
+ 'vote-threshold': 'int' } }
+
+##
+# @BlockdevOptions
+#
+# Options for creating a block device.
+#
+# Since: 1.7
+##
+{ 'union': 'BlockdevOptions',
+ 'base': 'BlockdevOptionsBase',
+ 'discriminator': 'driver',
+ 'data': {
+ 'file': 'BlockdevOptionsFile',
+ 'host_device':'BlockdevOptionsFile',
+ 'host_cdrom': 'BlockdevOptionsFile',
+ 'host_floppy':'BlockdevOptionsFile',
+ 'http': 'BlockdevOptionsFile',
+ 'https': 'BlockdevOptionsFile',
+ 'ftp': 'BlockdevOptionsFile',
+ 'ftps': 'BlockdevOptionsFile',
+ 'tftp': 'BlockdevOptionsFile',
+# TODO gluster: Wait for structured options
+# TODO iscsi: Wait for structured options
+# TODO nbd: Should take InetSocketAddress for 'host'?
+# TODO nfs: Wait for structured options
+# TODO rbd: Wait for structured options
+# TODO sheepdog: Wait for structured options
+# TODO ssh: Should take InetSocketAddress for 'host'?
+ 'vvfat': 'BlockdevOptionsVVFAT',
+ 'blkdebug': 'BlockdevOptionsBlkdebug',
+ 'blkverify': 'BlockdevOptionsBlkverify',
+ 'bochs': 'BlockdevOptionsGenericFormat',
+ 'cloop': 'BlockdevOptionsGenericFormat',
+ 'cow': 'BlockdevOptionsGenericCOWFormat',
+ 'dmg': 'BlockdevOptionsGenericFormat',
+ 'parallels': 'BlockdevOptionsGenericFormat',
+ 'qcow': 'BlockdevOptionsGenericCOWFormat',
+ 'qcow2': 'BlockdevOptionsQcow2',
+ 'qed': 'BlockdevOptionsGenericCOWFormat',
+ 'raw': 'BlockdevOptionsGenericFormat',
+ 'vdi': 'BlockdevOptionsGenericFormat',
+ 'vhdx': 'BlockdevOptionsGenericFormat',
+ 'vmdk': 'BlockdevOptionsGenericCOWFormat',
+ 'vpc': 'BlockdevOptionsGenericFormat',
+ 'quorum': 'BlockdevOptionsQuorum'
+ } }
+
+##
+# @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
+##
+{ 'union': 'BlockdevRef',
+ 'discriminator': {},
+ 'data': { 'definition': 'BlockdevOptions',
+ 'reference': 'str' } }
+
+##
+# @blockdev-add:
+#
+# Creates a new block device.
+#
+# @options: block device options for the new device
+#
+# Since: 1.7
+##
+{ 'command': 'blockdev-add', 'data': { 'options': 'BlockdevOptions' } }
+
