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:
May. 14, 2019
Filed:
Jan. 21, 2017
International Business Machines Corporation, Armonk, NY (US);
Gregory E. McBride, Vail, AZ (US);
David C. Reed, Tucson, AZ (US);
Warren K. Stanley, Loveland, CO (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for correcting data inconsistency in an asynchronous data replication environment is disclosed. In one embodiment, such a method includes detecting an error on a secondary track of a secondary volume, wherein the secondary volume is in a mirroring relationship with a primary volume. In response to detecting the error, the method flags the secondary track as 'temporarily inconsistent.' The method then issues a command to read a corresponding primary track from the primary volume, records a time when the primary track was read, and mirrors the primary track and time to the secondary volume. The method then applies, to the secondary track, updates to the secondary track having a timestamp earlier than the time, and applies the primary track to the secondary track. The method then unflags the secondary track as 'temporarily inconsistent.' A corresponding system and computer program product are also disclosed.