Dynamic volume compare for asynchronous remote copy verification

摘要

A method, device, and computer program product for performing asynchronous remote copy verification is provided. An initial track-to-track comparison between a primary and a secondary volume pair is performed. A first predetermined time is waited for. Upon completion of the first predetermined time, a subsequent primary volume track-to-secondary volume track comparison is performed only on the noncompare tracks. A query is performed for determining whether all of the noncompare tracks have been resolved. If any of the noncompare tracks have not been resolved, a query is performed for determining if a predetermined number of iterations of the primary volume track-to-secondary volume track comparison have been performed, and an additional subsequent primary volume track-to-secondary volume track comparison is performed only on unresolved noncompare tracks.

主权项

1. A method for performing asynchronous remote copy verification, comprising:
performing an initial primary volume track-to-secondary volume track comparison between a primary and a secondary volume pair; waiting a first predetermined time; upon completion of the first predetermined time, performing a subsequent primary volume track-to-secondary volume track comparison only on noncompare tracks; and performing a query for determining whether all of the noncompare tracks have been resolved, wherein:
if any of the noncompare tracks have not been resolved:
performing a query for determining if a predetermined number of iterations of the primary volume track-to-secondary volume track comparison have been performed, andperforming an additional subsequent primary volume track-to-secondary volume track comparison only on unresolved noncompare tracks.