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On-disk file format for a serverless distributed file system

  • US 7,454,612 B2
  • Filed: 12/16/2004
  • Issued: 11/18/2008
  • Est. Priority Date: 03/21/2001
  • Status: Expired due to Fees
First Claim
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1. A method implemented at least in part by a machine comprising:

  • segmenting a sparse file into multiple blocks;

    differentiating non-data blocks in the sparse file that contain no substantive content from data blocks in the sparse file that contain substantive data;

    creating an indexing structure to index individual blocks; and

    deallocating storage of both the non-data blocks and portions of the indexing structure that reference the non-data blocks that contain no substantive content, wherein the sparse file and the indexinci structure are reduced in size.

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