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Distributed data-storage system

  • US 20070208790A1
  • Filed: 03/06/2006
  • Published: 09/06/2007
  • Est. Priority Date: 03/06/2006
  • Status: Abandoned Application
First Claim
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1. A method, in a distributed data storage system that associates one or more timestamps with data blocks stored in data-storage-components, for deciding whether or not a data block has been written, the method comprising:

  • maintaining a sparse database of timestamps associated with data blocks, each timestamp having a field that contains one of an indication of a time or sequence and a sentinel value indicating that the timestamp is garbage collected; and

    when a timestamp is not found associated with a particular data block in the sparse database of timestamps, associating the particular data block with a garbage-collected-timestamp state.

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