发明授权
- 专利标题： Caching source blocks of data for target blocks of data
- 专利标题（中）： 缓存目标数据块的数据源块
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申请号： US13352201申请日： 2012-01-17
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公开(公告)号： US08825973B2公开(公告)日： 2014-09-02
- 发明人: Kevin J. Ash , Michael T. Benhase , Lokesh M. Gupta , Matthew J. Kalos
- 申请人： Kevin J. Ash , Michael T. Benhase , Lokesh M. Gupta , Matthew J. Kalos
- 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
- 代理机构： Konrad Raynes Davda & Victor LLP
- 代理商 Janaki K. Davda
- 主分类号： G06F12/08
- IPC分类号： G06F12/08
摘要：
Provided are a computer program product, system, and method for processing a read operation for a target block of data. A read operation for the target block of data in target storage is received, wherein the target block of data is in an instant virtual copy relationship with a source block of data in source storage. It is determined that the target block of data in the target storage is not consistent with the source block of data in the source storage. The source block of data is retrieved. The data in the source block of data in the cache is synthesized to make the data appear to be retrieved from the target storage. The target block of data is marked as read from the source storage. In response to the read operation completing, the target block of data that was read from the source storage is demoted.
公开/授权文献
- US20130185501A1 CACHING SOURCE BLOCKS OF DATA FOR TARGET BLOCKS OF DATA 公开/授权日：2013-07-18
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