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Determining tracks to release in a target volume mirrored from a source volume

專利號
US11175827B2
公開日期
2021-11-16
申請人
INTERNATIONAL BUSINESS MACHINES CORPORATION（US NY Armonk）
發(fā)明人
Matthew J. Ward; Joshua J. Crawford; Gregory E. McBride
IPC分類
G06F12/00; G06F3/06
技術(shù)領(lǐng)域
volume,target,copy,tracks,in,source,computer,server,mirror,release
地域： NY NY Armonk

摘要

Provided are a computer program product, system, and method for determining tracks to release in a target volume mirroring tracks from a source volume. Tracks received from the source volume are written to the target volume to form a consistency group of tracks in the source volume at the target volume. A determination is made of tracks available to release from a volume table providing a state of the tracks in the target volume and space allocated to the determined tracks is released. A point-in-time copy of the target volume is crated and complete is returned to forming the consistency group in response to releasing the space and creating the point-in-time copy.

說明書

FIG. 6 illustrates an embodiment of operations performed by the target copy manager 2122 to form a consistency group as of a consistency group time at a target volume 1042 at the target storage 1062. Upon initiating (at block 600) an operation to form a consistency group at the target volume 1042, the target copy manager 2122 receives (at block 602) tracks from the source server 2001 for the source volume 1041 and writes the tracks to the target volume 1042 of a mirror copy relationship 300i for the consistency group.

權(quán)利要求

1
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