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diff --git a/qemu/qapi/block-core.json b/qemu/qapi/block-core.json new file mode 100644 index 000000000..7b2efb867 --- /dev/null +++ b/qemu/qapi/block-core.json @@ -0,0 +1,2111 @@ +# -*- Mode: Python -*- +# +# QAPI block core definitions (vm unrelated) + +# 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 +# +## + +{ 'struct': '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 +# +# @corrupt: #optional true if the image has been marked corrupt; only valid for +# compat >= 1.1 (since 2.2) +# +# @refcount-bits: width of a refcount entry in bits (since 2.3) +# +# Since: 1.7 +## +{ 'struct': 'ImageInfoSpecificQCow2', + 'data': { + 'compat': 'str', + '*lazy-refcounts': 'bool', + '*corrupt': 'bool', + 'refcount-bits': 'int' + } } + +## +# @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 +## +{ 'struct': '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 +# +## + +{ 'struct': '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 +# +## + +{ 'struct': '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' } } + +## +# @BlockdevCacheInfo +# +# Cache mode information for a block device +# +# @writeback: true if writeback mode is enabled +# @direct: true if the host page cache is bypassed (O_DIRECT) +# @no-flush: true if flush requests are ignored for the device +# +# Since: 2.3 +## +{ 'struct': 'BlockdevCacheInfo', + 'data': { 'writeback': 'bool', + 'direct': 'bool', + 'no-flush': 'bool' } } + +## +# @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' +# 2.2: 'archipelago' added, 'cow' dropped +# 2.3: 'host_floppy' deprecated +# +# @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) +# +# @group: #optional throttle group name (Since 2.4) +# +# @cache: the cache mode used for the block device (since: 2.3) +# +# @write_threshold: configured write threshold for the device. +# 0 if disabled. (Since 2.3) +# +# Since: 0.14.0 +# +## +{ 'struct': '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', '*group': 'str', 'cache': 'BlockdevCacheInfo', + 'write_threshold': '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 +## +{ 'struct': 'BlockDeviceMapEntry', + 'data': { 'start': 'int', 'length': 'int', 'depth': 'int', 'zero': 'bool', + 'data': 'bool', '*offset': 'int' } } + +## +# @DirtyBitmapStatus: +# +# An enumeration of possible states that a dirty bitmap can report to the user. +# +# @frozen: The bitmap is currently in-use by a backup operation or block job, +# and is immutable. +# +# @disabled: The bitmap is currently in-use by an internal operation and is +# read-only. It can still be deleted. +# +# @active: The bitmap is actively monitoring for new writes, and can be cleared, +# deleted, or used for backup operations. +# +# Since: 2.4 +## +{ 'enum': 'DirtyBitmapStatus', + 'data': ['active', 'disabled', 'frozen'] } + +## +# @BlockDirtyInfo: +# +# Block dirty bitmap information. +# +# @name: #optional the name of the dirty bitmap (Since 2.4) +# +# @count: number of dirty bytes according to the dirty bitmap +# +# @granularity: granularity of the dirty bitmap in bytes (since 1.4) +# +# @status: current status of the dirty bitmap (since 2.4) +# +# Since: 1.3 +## +{ 'struct': 'BlockDirtyInfo', + 'data': {'*name': 'str', 'count': 'int', 'granularity': 'uint32', + 'status': 'DirtyBitmapStatus'} } + +## +# @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 +# (supported device models: virtio-blk, ide, scsi-disk) +# +# @inserted: #optional @BlockDeviceInfo describing the device if media is +# present +# +# Since: 0.14.0 +## +{ 'struct': '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. +# +# @rd_merged: Number of read requests that have been merged into another +# request (Since 2.3). +# +# @wr_merged: Number of write requests that have been merged into another +# request (Since 2.3). +# +# Since: 0.14.0 +## +{ 'struct': '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', + 'rd_merged': 'int', 'wr_merged': '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. +# +# @node-name: #optional The node name of the device. (Since 2.3) +# +# @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 +## +{ 'struct': 'BlockStats', + 'data': {'*device': 'str', '*node-name': 'str', + 'stats': 'BlockDeviceStats', + '*parent': 'BlockStats', + '*backing': 'BlockStats'} } + +## +# @query-blockstats: +# +# Query the @BlockStats for all virtual block devices. +# +# @query-nodes: #optional If true, the command will query all the block nodes +# 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). +# @unmap: #optional Whether to try to unmap target sectors where source has +# only zero. If true, and target unallocated sectors will read as zero, +# target image sectors will be unmapped; otherwise, zeroes will be +# written. Both will result in identical contents. +# Default is true. (Since 2.4) +# +# 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', + '*unmap': 'bool' } } + +## +# @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 +# +# Emitted when a block job is ready to complete +# +# @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 +# +# Note: The "ready to complete" status is always reset by a @BLOCK_JOB_ERROR +# event +# +# Since: 1.3 +## +{ 'event': 'BLOCK_JOB_READY', + 'data': { 'type' : 'BlockJobType', + 'device': 'str', + 'len' : 'int', + 'offset': 'int', + 'speed' : 'int' } } + +# @PreallocMode +# +# Preallocation mode of QEMU image file +# +# @off: no preallocation +# @metadata: preallocate only for metadata +# @falloc: like @full preallocation but allocate disk space by +# posix_fallocate() rather than writing zeros. +# @full: preallocate all data by writing zeros to device to ensure disk +# space is really available. @full preallocation also sets up +# metadata correctly. +# +# Since 2.2 +## +{ 'enum': 'PreallocMode', + 'data': [ 'off', 'metadata', 'falloc', 'full' ] } + +## +# @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' } } |