RollbackToGroupSnapshot

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You can use RollbackToGroupSnapshot to roll back all individual volumes in a snapshot group to each volume’s individual snapshot.

Rolling back to a group snapshot creates a temporary snapshot of each volume within the group snapshot.

Note Creating a snapshot is allowed if cluster fullness is at stage 1, 2, or 3. Snapshots are not created when cluster fullness is at stage 4 or 5.

Parameters

This method has the following input parameters:

Name Description Type Default value Required

groupSnapshotID

Unique ID of the group snapshot.

integer

None

Yes

attributes

List of name-value pairs in JSON object format.

JSON object

None

No

name

Name for the group snapshot of the volume’s current state that is created if saveCurrentState is set to true. If you do not give a name, then the name of the snapshots (group and individual volume) are set to a timestamp of the time that the rollback occurred.

string

None

No

saveCurrentState

Specifies whether to save the previous active volume image or not. Valid values:

  • true: The previous active volume image is kept.

  • false: The previous active volume image is deleted.

boolean

false

No

Return values

This method has the following return values:

Name

Description

Type

members

An array containing volumeIDs and snapshotIDs of members of the group snapshot. Values:

  • checksum: A small string representation of the data in the stored snapshot. This checksum can be used later to compare other snapshots to detect errors in the data. (string)

  • snapshotID: Unique ID of a snapshot from which the new snapshot is made. The snapshotID must be a snapshot on the given volume. (integer)

  • volumeID: The source volume ID for the snapshot. (integer)

JSON object array

groupSnapshotID

If saveCurrentState was set to false, this value is null.

If saveCurrentState was set to true, the unique ID of the newly created group snapshot.

integer

groupSnapshot

If saveCurrentState was set to false, this value is null.

If saveCurrentState was set to true, an object containing information about the group snapshot which RollbackToGroupSnapshot just rolled back to.

Request example

Requests for this method are similar to the following example:

{
  "id": 438,
  "method": "RollbackToGroupSnapshot",
  "params": {
    "groupSnapshotID": 1,
    "name": "grpsnap1",
    "saveCurrentState": true
  }
}

Response example

This method returns a response similar to the following example:

{
  "id": 438,
  "result": {
    "groupSnapshot": {
      "attributes": {},
      "createTime": "2016-04-06T17:27:17Z",
      "groupSnapshotID": 1,
      "groupSnapshotUUID": "468fe181-0002-4b1d-ae7f-8b2a5c171eee",
      "members": [
        {
          "attributes": {},
          "checksum": "0x0",
          "createTime": "2016-04-06T17:27:17Z",
          "enableRemoteReplication": false,
          "expirationReason": "None",
          "expirationTime": null,
          "groupID": 1,
          "groupSnapshotUUID": "468fe181-0002-4b1d-ae7f-8b2a5c171eee",
          "name": "2016-04-06T17:27:17Z",
          "snapshotID": 4,
          "snapshotUUID": "03563c5e-51c4-4e3b-a256-a4d0e6b7959d",
          "status": "done",
          "totalSize": 1000341504,
          "virtualVolumeID": null,
          "volumeID": 2
        }
      ],
      "name": "2016-04-06T17:27:17Z",
      "status": "done"
    },
    "groupSnapshotID": 3,
    "members": [
      {
        "checksum": "0x0",
        "snapshotID": 2,
        "snapshotUUID": "719b162c-e170-4d80-b4c7-1282ed88f4e1",
        "volumeID": 2
      }
    ]
  }
}

New since version

9.6