公开(公告)号：GB2540700A

公开(公告)日：2017-01-25

申请号：GB201619298

申请日：2015-04-08

Applicant: IBM

Inventor： GREGORY TAD KISHI ,  ALISTAIR LEASK SYMON ,  GLEN ALAN JAQUETTE

IPC: G06F11/14 ,  G06F17/30

Abstract: Provided are a computer program product, system, and method for merging multiple point- in-time copies into a merged point-in-time copy. A repository maintains a full copy of the source data and point-in-time copies at point-in-times of the source data. Each of the point- in-time copies have change information indicating changed data in the source data that changed between the point-in-time of the point-in-time copy and a subsequent point-in-time and changed point-in-time data comprising data in the source data as of the point-in-time of the point-in-time copy indicated in the change information as changed. At least two selected of the point-in-time copies in the repository are merged into a merged point-in-time copy by: forming merged change information in the merged point-in-time copy indicating changed data indicated in change information for the selected point-in-time copies; and forming merged changed data in the merged point-in-time copy from the changed data in the selected point-in-time copies.