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
163 { 'union': 'TransactionAction',
164 'base': { 'type': 'TransactionActionKind' },
165 'discriminator': 'type',
167 'abort': 'AbortWrapper',
168 'block-dirty-bitmap-add': 'BlockDirtyBitmapAddWrapper',
169 'block-dirty-bitmap-remove': 'BlockDirtyBitmapWrapper',
170 'block-dirty-bitmap-clear': 'BlockDirtyBitmapWrapper',
171 'block-dirty-bitmap-enable': 'BlockDirtyBitmapWrapper',
172 'block-dirty-bitmap-disable': 'BlockDirtyBitmapWrapper',
173 'block-dirty-bitmap-merge': 'BlockDirtyBitmapMergeWrapper',
174 'blockdev-backup': 'BlockdevBackupWrapper',
175 'blockdev-snapshot': 'BlockdevSnapshotWrapper',
176 'blockdev-snapshot-internal-sync': 'BlockdevSnapshotInternalWrapper',
177 'blockdev-snapshot-sync': 'BlockdevSnapshotSyncWrapper',
178 'drive-backup': 'DriveBackupWrapper'
182 # @TransactionProperties:
184 # Optional arguments to modify the behavior of a Transaction.
186 # @completion-mode: Controls how jobs launched asynchronously by
187 # Actions will complete or fail as a group. See
188 # @ActionCompletionMode for details.
192 { 'struct': 'TransactionProperties',
194 '*completion-mode': 'ActionCompletionMode'
201 # Executes a number of transactionable QMP commands atomically. If
202 # any operation fails, then the entire set of actions will be
203 # abandoned and the appropriate error returned.
205 # For external snapshots, the dictionary contains the device, the file
206 # to use for the new snapshot, and the format. The default format, if
207 # not specified, is qcow2.
209 # Each new snapshot defaults to being created by QEMU (wiping any
210 # contents if the file already exists), but it is also possible to
211 # reuse an externally-created file. In the latter case, you should
212 # ensure that the new image file has the same contents as the current
213 # one; QEMU cannot perform any meaningful check. Typically this is
214 # achieved by using the current image file as the backing file for the
217 # On failure, the original disks pre-snapshot attempt will be used.
219 # For internal snapshots, the dictionary contains the device and the
220 # snapshot's name. If an internal snapshot matching name already
221 # exists, the request will be rejected. Only some image formats
222 # support it, for example, qcow2, and rbd,
224 # On failure, qemu will try delete the newly created internal snapshot
225 # in the transaction. When an I/O error occurs during deletion, the
226 # user needs to fix it later with qemu-img or other command.
228 # @actions: List of @TransactionAction; information needed for the
229 # respective operations.
231 # @properties: structure of additional options to control the
232 # execution of the transaction. See @TransactionProperties for
235 # Returns: nothing on success
237 # Errors depend on the operations of the transaction
239 # Note: The transaction aborts on the first failure. Therefore, there
240 # will be information on only one failed operation returned in an
241 # error condition, and subsequent actions will not have been
248 # -> { "execute": "transaction",
249 # "arguments": { "actions": [
250 # { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd0",
251 # "snapshot-file": "/some/place/my-image",
252 # "format": "qcow2" } },
253 # { "type": "blockdev-snapshot-sync", "data" : { "node-name": "myfile",
254 # "snapshot-file": "/some/place/my-image2",
255 # "snapshot-node-name": "node3432",
256 # "mode": "existing",
257 # "format": "qcow2" } },
258 # { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd1",
259 # "snapshot-file": "/some/place/my-image2",
260 # "mode": "existing",
261 # "format": "qcow2" } },
262 # { "type": "blockdev-snapshot-internal-sync", "data" : {
263 # "device": "ide-hd2",
264 # "name": "snapshot0" } } ] } }
265 # <- { "return": {} }
267 { 'command': 'transaction',
268 'data': { 'actions': [ 'TransactionAction' ],
269 '*properties': 'TransactionProperties'