Dell PowerVault MD3820f - Manual (Page 143)

3. Click Resume.
The following may occur depending on the error condition:
– If the resume rollback operation is successful — You can view the progress of the rollback
operation in the Properties pane when you select the base virtual disk or the consistency group
member virtual disk in the Logical pane.
– If the resume rollback operation is not successful — The rollback operation is paused again. The
base virtual disk or member virtual disk displays Needs Attention icons, and the controller logs the
event to the Major Event Log (MEL). You can follow the Recovery Guru procedure to correct the
problem or contact your Technical Support representative.
Canceling A Snapshot Image Rollback
Use the Cancel Rollback option to cancel a rollback operation after it has been started. You can cancel
an active rollback that is in progress (actively copying data), a pending rollback (in a pending queue
awaiting resources to start), or a rollback that has been paused due to an error. When you cancel a
rollback operation as it is in progress, the base virtual disk reverts to an unusable state and appears as
failed in the MD Storage Manager. Therefore, consider canceling a rollback operation only when recovery
options exist for restoring the content of the base virtual disk.
After you cancel a rollback operation, you must take one of the following actions:
• Reinitialize the content of the base virtual disk.
• Perform a new rollback operation to restore the base virtual disk (using either the same snapshot
image that was used in the Cancel Rollback operation or a different snapshot image to perform the
new rollback operation).
NOTE: If the snapshot group on which the snapshot image resides has one or more snapshot
images that are automatically purged, the snapshot image used for the rollback operation may not
be available for future rollbacks.
1. From the AMW, select the Storage & Copy Services tab.
2. Select a snapshot image of either a base virtual disk or of a consistency group’s member virtual disk
and then select Copy Services → Snapshot Image → Rollback → Advanced → Cancel.
The Confirm Cancel Rollback window is displayed.
3. Click Resume.
4. Click Yes to cancel the rollback operation.
5. Type yes in the text box, and click OK.
Viewing The Progress Of A Snapshot Rollback
You can view the progress of the rollback operation in the Properties pane of the AMW when you select
the base virtual disk or consistency group member virtual disk in the Logical pane.
When a rollback operation is in progress, the following information is displayed:
• The Operation in Progress bar at the bottom of the Properties pane.
• The time remaining.
The Rollback operation is a long-running operation. The Operations in Progress window displays all of
the long-running operations that are currently running on the storage array. From this window, you can
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