发明申请
- 专利标题： MANAGING METADATA FOR DATA IN A COPY RELATIONSHIP
- 专利标题（中）： 在复制关系中管理数据的元数据
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申请号： US13077840申请日： 2011-03-31
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公开(公告)号： US20120254547A1公开(公告)日： 2012-10-04
- 发明人: Michael T. Benhase , Theresa M. Brown , Lokesh M. Gupta , Suguang Li , Mark L. Lipets , Carol S. Mellgren , Kenneth W. Todd
- 申请人： Michael T. Benhase , Theresa M. Brown , Lokesh M. Gupta , Suguang Li , Mark L. Lipets , Carol S. Mellgren , Kenneth W. Todd
- 申请人地址： US NY Armonk
- 专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址： US NY Armonk
- 主分类号： G06F12/16
- IPC分类号： G06F12/16 ; G06F12/08
摘要：
Provided are a computer program product, system, and method for managing metadata for data in a copy relationship copied from a source storage to a target storage. Information is maintained on a copy relationship of source data in the source storage and target data in the target storage. The source data is copied from the source storage to the cache to copy to target data in the target storage indicated in the copy relationship. Target metadata is generated for the target data comprising the source data copied to the cache. An access request to requested target data comprising the target data in the cache is processed and access is provided to the requested target data in the cache. A determination is made as to whether the requested target data in the cache has been destaged to the target storage. The target metadata for the requested target data in the target storage is discarded in response to determining that the requested target data in the cache has not been destaged to the target storage.
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