Konrad, Raynes, Davda and Victor LLP
Performing a recovery copy command to restore a safeguarded copy backup to a production volume
Provided are techniques for performing a recovery copy command to restore a safeguarded copy backup to a production volume. In response to receiving a recovery copy command, a production target data structure is created. A read operation is received for data for a storage location. In response to determining that the data for the storage location is in a cache of a host and a generation number is greater than a recovery generation number, the data is read from the cache. In response to determining at least one of that the data for the storage location is not in the cache and that the generation number is not greater than the recovery generation number, the data is read from one of the production volume and a backup volume based on a value of an indicator for the storage location in the production target data structure.
International Business Machines Corporation
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Carol S. Mark L. David Nicolas M. Kevin Theresa M. Nedlaya Y. Gregory E.
Mellgren Lipets Fei Clayton Lin Brown Francisco McBride