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
27 # Actions fail after the Transaction request succeeds. All
28 # Actions that can complete successfully will do so without
29 # waiting on others. This is the default.
31 # @grouped: If any Action fails after the Transaction succeeds, cancel
32 # all Actions. Actions do not complete until all Actions are
33 # ready to complete. May be rejected by Actions that do not
34 # support this completion mode.
38 { 'enum': 'ActionCompletionMode',
39 'data': [ 'individual', 'grouped' ] }
42 # @TransactionActionKind:
46 # @block-dirty-bitmap-add: Since 2.5
48 # @block-dirty-bitmap-remove: Since 4.2
50 # @block-dirty-bitmap-clear: Since 2.5
52 # @block-dirty-bitmap-enable: Since 4.0
54 # @block-dirty-bitmap-disable: Since 4.0
56 # @block-dirty-bitmap-merge: Since 4.0
58 # @blockdev-backup: Since 2.3
60 # @blockdev-snapshot: Since 2.5
62 # @blockdev-snapshot-internal-sync: Since 1.7
64 # @blockdev-snapshot-sync: since 1.1
66 # @drive-backup: Since 1.6
70 # @deprecated: Member @drive-backup is deprecated. Use member
71 # @blockdev-backup instead.
75 { 'enum': 'TransactionActionKind',
76 'data': [ 'abort', 'block-dirty-bitmap-add', 'block-dirty-bitmap-remove',
77 'block-dirty-bitmap-clear', 'block-dirty-bitmap-enable',
78 'block-dirty-bitmap-disable', 'block-dirty-bitmap-merge',
79 'blockdev-backup', 'blockdev-snapshot',
80 'blockdev-snapshot-internal-sync', 'blockdev-snapshot-sync',
81 { 'name': 'drive-backup', 'features': [ 'deprecated' ] } ] }
88 { 'struct': 'AbortWrapper',
89 'data': { 'data': 'Abort' } }
92 # @BlockDirtyBitmapAddWrapper:
96 { 'struct': 'BlockDirtyBitmapAddWrapper',
97 'data': { 'data': 'BlockDirtyBitmapAdd' } }
100 # @BlockDirtyBitmapWrapper:
104 { 'struct': 'BlockDirtyBitmapWrapper',
105 'data': { 'data': 'BlockDirtyBitmap' } }
108 # @BlockDirtyBitmapMergeWrapper:
112 { 'struct': 'BlockDirtyBitmapMergeWrapper',
113 'data': { 'data': 'BlockDirtyBitmapMerge' } }
116 # @BlockdevBackupWrapper:
120 { 'struct': 'BlockdevBackupWrapper',
121 'data': { 'data': 'BlockdevBackup' } }
124 # @BlockdevSnapshotWrapper:
128 { 'struct': 'BlockdevSnapshotWrapper',
129 'data': { 'data': 'BlockdevSnapshot' } }
132 # @BlockdevSnapshotInternalWrapper:
136 { 'struct': 'BlockdevSnapshotInternalWrapper',
137 'data': { 'data': 'BlockdevSnapshotInternal' } }
140 # @BlockdevSnapshotSyncWrapper:
144 { 'struct': 'BlockdevSnapshotSyncWrapper',
145 'data': { 'data': 'BlockdevSnapshotSync' } }
148 # @DriveBackupWrapper:
152 { 'struct': 'DriveBackupWrapper',
153 'data': { 'data': 'DriveBackup' } }
156 # @TransactionAction:
158 # A discriminated record of operations that can be performed with
161 # @type: the operation to be performed
165 { 'union': 'TransactionAction',
166 'base': { 'type': 'TransactionActionKind' },
167 'discriminator': 'type',
169 'abort': 'AbortWrapper',
170 'block-dirty-bitmap-add': 'BlockDirtyBitmapAddWrapper',
171 'block-dirty-bitmap-remove': 'BlockDirtyBitmapWrapper',
172 'block-dirty-bitmap-clear': 'BlockDirtyBitmapWrapper',
173 'block-dirty-bitmap-enable': 'BlockDirtyBitmapWrapper',
174 'block-dirty-bitmap-disable': 'BlockDirtyBitmapWrapper',
175 'block-dirty-bitmap-merge': 'BlockDirtyBitmapMergeWrapper',
176 'blockdev-backup': 'BlockdevBackupWrapper',
177 'blockdev-snapshot': 'BlockdevSnapshotWrapper',
178 'blockdev-snapshot-internal-sync': 'BlockdevSnapshotInternalWrapper',
179 'blockdev-snapshot-sync': 'BlockdevSnapshotSyncWrapper',
180 'drive-backup': 'DriveBackupWrapper'
184 # @TransactionProperties:
186 # Optional arguments to modify the behavior of a Transaction.
188 # @completion-mode: Controls how jobs launched asynchronously by
189 # Actions will complete or fail as a group. See
190 # @ActionCompletionMode for details.
194 { 'struct': 'TransactionProperties',
196 '*completion-mode': 'ActionCompletionMode'
203 # Executes a number of transactionable QMP commands atomically. If
204 # any operation fails, then the entire set of actions will be
205 # abandoned and the appropriate error returned.
207 # For external snapshots, the dictionary contains the device, the file
208 # to use for the new snapshot, and the format. The default format, if
209 # not specified, is qcow2.
211 # Each new snapshot defaults to being created by QEMU (wiping any
212 # contents if the file already exists), but it is also possible to
213 # reuse an externally-created file. In the latter case, you should
214 # ensure that the new image file has the same contents as the current
215 # one; QEMU cannot perform any meaningful check. Typically this is
216 # achieved by using the current image file as the backing file for the
219 # On failure, the original disks pre-snapshot attempt will be used.
221 # For internal snapshots, the dictionary contains the device and the
222 # snapshot's name. If an internal snapshot matching name already
223 # exists, the request will be rejected. Only some image formats
224 # support it, for example, qcow2, and rbd,
226 # On failure, qemu will try delete the newly created internal snapshot
227 # in the transaction. When an I/O error occurs during deletion, the
228 # user needs to fix it later with qemu-img or other command.
230 # @actions: List of @TransactionAction; information needed for the
231 # respective operations.
233 # @properties: structure of additional options to control the
234 # execution of the transaction. See @TransactionProperties for
238 # Any errors from commands in the transaction
240 # Note: The transaction aborts on the first failure. Therefore, there
241 # will be information on only one failed operation returned in an
242 # error condition, and subsequent actions will not have been
249 # -> { "execute": "transaction",
250 # "arguments": { "actions": [
251 # { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd0",
252 # "snapshot-file": "/some/place/my-image",
253 # "format": "qcow2" } },
254 # { "type": "blockdev-snapshot-sync", "data" : { "node-name": "myfile",
255 # "snapshot-file": "/some/place/my-image2",
256 # "snapshot-node-name": "node3432",
257 # "mode": "existing",
258 # "format": "qcow2" } },
259 # { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd1",
260 # "snapshot-file": "/some/place/my-image2",
261 # "mode": "existing",
262 # "format": "qcow2" } },
263 # { "type": "blockdev-snapshot-internal-sync", "data" : {
264 # "device": "ide-hd2",
265 # "name": "snapshot0" } } ] } }
266 # <- { "return": {} }
268 { 'command': 'transaction',
269 'data': { 'actions': [ 'TransactionAction' ],
270 '*properties': 'TransactionProperties'