9 { 'include': 'block-core.json' }
14 # This action can be used to test transaction failure.
22 # @ActionCompletionMode:
24 # An enumeration of Transactional completion modes.
26 # @individual: Do not attempt to cancel any other Actions if any Actions fail
27 # after the Transaction request succeeds. All Actions that
28 # can complete successfully will do so without waiting on others.
29 # This is the default.
31 # @grouped: If any Action fails after the Transaction succeeds, cancel all
32 # Actions. Actions do not complete until all Actions are ready to
33 # complete. May be rejected by Actions that do not support this
38 { 'enum': 'ActionCompletionMode',
39 'data': [ 'individual', 'grouped' ] }
42 # @TransactionActionKind:
45 # @block-dirty-bitmap-add: Since 2.5
46 # @block-dirty-bitmap-remove: Since 4.2
47 # @block-dirty-bitmap-clear: Since 2.5
48 # @block-dirty-bitmap-enable: Since 4.0
49 # @block-dirty-bitmap-disable: Since 4.0
50 # @block-dirty-bitmap-merge: Since 4.0
51 # @blockdev-backup: Since 2.3
52 # @blockdev-snapshot: Since 2.5
53 # @blockdev-snapshot-internal-sync: Since 1.7
54 # @blockdev-snapshot-sync: since 1.1
55 # @drive-backup: Since 1.6
58 # @deprecated: Member @drive-backup is deprecated. Use member
59 # @blockdev-backup instead.
63 { 'enum': 'TransactionActionKind',
64 'data': [ 'abort', 'block-dirty-bitmap-add', 'block-dirty-bitmap-remove',
65 'block-dirty-bitmap-clear', 'block-dirty-bitmap-enable',
66 'block-dirty-bitmap-disable', 'block-dirty-bitmap-merge',
67 'blockdev-backup', 'blockdev-snapshot',
68 'blockdev-snapshot-internal-sync', 'blockdev-snapshot-sync',
69 { 'name': 'drive-backup', 'features': [ 'deprecated' ] } ] }
76 { 'struct': 'AbortWrapper',
77 'data': { 'data': 'Abort' } }
80 # @BlockDirtyBitmapAddWrapper:
84 { 'struct': 'BlockDirtyBitmapAddWrapper',
85 'data': { 'data': 'BlockDirtyBitmapAdd' } }
88 # @BlockDirtyBitmapWrapper:
92 { 'struct': 'BlockDirtyBitmapWrapper',
93 'data': { 'data': 'BlockDirtyBitmap' } }
96 # @BlockDirtyBitmapMergeWrapper:
100 { 'struct': 'BlockDirtyBitmapMergeWrapper',
101 'data': { 'data': 'BlockDirtyBitmapMerge' } }
104 # @BlockdevBackupWrapper:
108 { 'struct': 'BlockdevBackupWrapper',
109 'data': { 'data': 'BlockdevBackup' } }
112 # @BlockdevSnapshotWrapper:
116 { 'struct': 'BlockdevSnapshotWrapper',
117 'data': { 'data': 'BlockdevSnapshot' } }
120 # @BlockdevSnapshotInternalWrapper:
124 { 'struct': 'BlockdevSnapshotInternalWrapper',
125 'data': { 'data': 'BlockdevSnapshotInternal' } }
128 # @BlockdevSnapshotSyncWrapper:
132 { 'struct': 'BlockdevSnapshotSyncWrapper',
133 'data': { 'data': 'BlockdevSnapshotSync' } }
136 # @DriveBackupWrapper:
140 { 'struct': 'DriveBackupWrapper',
141 'data': { 'data': 'DriveBackup' } }
144 # @TransactionAction:
146 # A discriminated record of operations that can be performed with
151 { 'union': 'TransactionAction',
152 'base': { 'type': 'TransactionActionKind' },
153 'discriminator': 'type',
155 'abort': 'AbortWrapper',
156 'block-dirty-bitmap-add': 'BlockDirtyBitmapAddWrapper',
157 'block-dirty-bitmap-remove': 'BlockDirtyBitmapWrapper',
158 'block-dirty-bitmap-clear': 'BlockDirtyBitmapWrapper',
159 'block-dirty-bitmap-enable': 'BlockDirtyBitmapWrapper',
160 'block-dirty-bitmap-disable': 'BlockDirtyBitmapWrapper',
161 'block-dirty-bitmap-merge': 'BlockDirtyBitmapMergeWrapper',
162 'blockdev-backup': 'BlockdevBackupWrapper',
163 'blockdev-snapshot': 'BlockdevSnapshotWrapper',
164 'blockdev-snapshot-internal-sync': 'BlockdevSnapshotInternalWrapper',
165 'blockdev-snapshot-sync': 'BlockdevSnapshotSyncWrapper',
166 'drive-backup': 'DriveBackupWrapper'
170 # @TransactionProperties:
172 # Optional arguments to modify the behavior of a Transaction.
174 # @completion-mode: Controls how jobs launched asynchronously by
175 # Actions will complete or fail as a group.
176 # See @ActionCompletionMode for details.
180 { 'struct': 'TransactionProperties',
182 '*completion-mode': 'ActionCompletionMode'
189 # Executes a number of transactionable QMP commands atomically. If any
190 # operation fails, then the entire set of actions will be abandoned and the
191 # appropriate error returned.
193 # For external snapshots, the dictionary contains the device, the file to use for
194 # the new snapshot, and the format. The default format, if not specified, is
197 # Each new snapshot defaults to being created by QEMU (wiping any
198 # contents if the file already exists), but it is also possible to reuse
199 # an externally-created file. In the latter case, you should ensure that
200 # the new image file has the same contents as the current one; QEMU cannot
201 # perform any meaningful check. Typically this is achieved by using the
202 # current image file as the backing file for the new image.
204 # On failure, the original disks pre-snapshot attempt will be used.
206 # For internal snapshots, the dictionary contains the device and the
207 # snapshot's name. If an internal snapshot matching name already exists,
208 # the request will be rejected. Only some image formats support it, for
209 # example, qcow2, and rbd,
211 # On failure, qemu will try delete the newly created internal snapshot in the
212 # transaction. When an I/O error occurs during deletion, the user needs to fix
213 # it later with qemu-img or other command.
215 # @actions: List of @TransactionAction;
216 # information needed for the respective operations.
218 # @properties: structure of additional options to control the
219 # execution of the transaction. See @TransactionProperties
220 # for additional detail.
222 # Returns: nothing on success
224 # Errors depend on the operations of the transaction
226 # Note: The transaction aborts on the first failure. Therefore, there will be
227 # information on only one failed operation returned in an error condition, and
228 # subsequent actions will not have been attempted.
234 # -> { "execute": "transaction",
235 # "arguments": { "actions": [
236 # { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd0",
237 # "snapshot-file": "/some/place/my-image",
238 # "format": "qcow2" } },
239 # { "type": "blockdev-snapshot-sync", "data" : { "node-name": "myfile",
240 # "snapshot-file": "/some/place/my-image2",
241 # "snapshot-node-name": "node3432",
242 # "mode": "existing",
243 # "format": "qcow2" } },
244 # { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd1",
245 # "snapshot-file": "/some/place/my-image2",
246 # "mode": "existing",
247 # "format": "qcow2" } },
248 # { "type": "blockdev-snapshot-internal-sync", "data" : {
249 # "device": "ide-hd2",
250 # "name": "snapshot0" } } ] } }
251 # <- { "return": {} }
254 { 'command': 'transaction',
255 'data': { 'actions': [ 'TransactionAction' ],
256 '*properties': 'TransactionProperties'