The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2021
Filed:
Sep. 06, 2018
International Business Machines Corporation, Armonk, NY (US);
Theresa M. Brown, Tucson, AZ (US);
Nedlaya Y. Francisco, Tucson, AZ (US);
Nicolas M. Clayton, Warrington, GB;
Mark L. Lipets, Tucson, AZ (US);
Carol S. Mellgren, Tucson, AZ (US);
Gregory E. McBride, Vail, AZ (US);
David Fei, Tucson, AZ (US);
Kevin Lin, Tuscon, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
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.