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Dell EMC PowerVault MD 34XX/38XX Series Storage Arrays Administrator's Guide

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Canceling 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.
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