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Partial recall of deduplicated files

  • US 8,645,335 B2
  • Filed: 12/16/2010
  • Issued: 02/04/2014
  • Est. Priority Date: 12/16/2010
  • Status: Active Grant
First Claim
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1. In a computing environment, a method performed at least in part on at least one processor, comprising, changing a state of a file of a storage volume from a fully deduplicated state to a partially deduplicated state, including reading from a chunk store one or more chunks of the file'"'"'s data, committing at least part of the one or more chunks to a stable storage as one or more recalled ranges of data of that file, and maintaining information in association with the file that tracks which range or ranges of data have been recalled, and which range or ranges of data reside in the chunk store.

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