发明名称 |
Creating a buffer point-in-time copy relationship for a point-in-time copy function executed to create a point-in-time copy relationship |
摘要 |
Provided are a method, system, and computer program product for creating a buffer point-in-time copy relationship for a point-in-time copy function executed to create a point-in-time copy relationship. A point-in-time copy function is initiated to create a new point-in-time copy relationship from a source volume comprising a first volume to a target volume comprising a second volume. Detection is made that the target volume of the new point-in-time copy relationship is a source volume of a first pre-existing point-in-time copy relationship having as a target volume a third volume. Detection is also made that the target volume of the first pre-existing point-in-time copy relationship is a source volume of a second pre-existing point-in-time copy relationship having as a target volume a fourth volume. A buffer point-in-time copy relationship having a source volume comprising the target volume of the first pre-existing relationship and a target volume comprising a fifth volume is created in response to detecting that the target volume of the new point-in-time copy relationship is the source volume of the first pre-existing point-in-time copy relationship and the detected that the target volume of the first pre-existing point-in-time copy relationship is the source volume of the second pre-existing point-in-time copy relationship. |
申请公布号 |
US8285679(B2) |
申请公布日期 |
2012.10.09 |
申请号 |
US201113039245 |
申请日期 |
2011.03.02 |
申请人 |
AGOMBAR JOHN P.;BEEKEN CHRISTOPHER B.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
AGOMBAR JOHN P.;BEEKEN CHRISTOPHER B. |
分类号 |
G06F17/00 |
主分类号 |
G06F17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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