US 2015/0310080 A1 · MERGING MULTIPLE POINT-IN-TIME COPIES INTO A MERGED POINT-IN-TIME COPY

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.

Claims22

Dependent claims

A computer program product for maintaining source data in a repository, wherein the computer program product comprises a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause operations, the operations comprising:

maintaining in the repository a full copy of the source data and point-in-time copies at different point-in-times of the source data, wherein 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;
and
merging at least two selected of the point-in-time copies in the repository into a merged point-in-time copy in the repository, 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.

3 more elements

A system for maintaining source data in a repository, comprising:

a processor;
and
a computer readable storage medium including computer program code that when executed by the processor performs operations, the operations comprising:
maintaining in the repository a full copy of the source data and point-in-time copies at different point-in-times of the source data, wherein 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;
and
merging at least two selected of the point-in-time copies in the repository into a merged point-in-time copy in the repository, 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.

6 more elements

A method, comprising

maintaining a repository including a full copy of source data and point-in-time copies at different point-in-times of the source data, wherein 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;
and
merging at least two selected of the point-in-time copies in the repository into a merged point-in-time copy in the repository, 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.

3 more elements

Dependencies are inferred from the claim text.

Merging multiple point-in-time copies into a merged point-in-time copy

Life of this patent

Merging multiple point-in-time copies into a merged point-in-time copy

Life of this patent

Abstract

Claims22