Konrad Raynes Davda & Victor LLP
Managing metadata for data in a copy relationship
Provided is a 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. 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.
International Business Machines Corporation
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Michael T. Carol S. Suguang Mark L. Kenneth W. Theresa M. Lokesh M.
Benhase Mellgren Li Lipets Todd Brown Gupta