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Reverting an old snapshot on a production volume without a full sweep

  • US 8,745,004 B1
  • Filed: 06/24/2011
  • Issued: 06/03/2014
  • Est. Priority Date: 06/24/2011
  • Status: Active Grant
First Claim
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1. A method for reverting from a production volume to a snapshot in a replication environment comprising a production site including the production volume, the snapshot, and a splitter, the method comprising:

  • stopping replication of the production volume;

    setting a revert flag in the splitter;

    reverting the production volume to the snapshot by notifying the splitter of dirty locations in the snapshot and tracking metadata of the dirty locations in the splitter;

    clearing the revert flag to notify the splitter that the revert is completed; and

    resuming replication of the production volume.

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