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  • US 7,072,916 B1
  • Filed: 08/18/2000
  • Issued: 07/04/2006
  • Est. Priority Date: 08/18/2000
  • Status: Expired due to Term
First Claim
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1. A method of capturing the contents of files and directories in a file system, said file system comprising a set of storage blocks for plural files in a mass storage system including steps ofrecording an active map in said file system of said storage blocks used by said plural files in said active file system;

  • recording a consistency point in said file system including a consistent version of said plural files in said file system at a previous time, said consistency point including a copy of said active map at said previous time;

    refraining from writing data to storage blocks in response to said active map and at least one said copy of said active map included in said consistency point; and

    generating a summary map by performing a logical OR operation with at least one said copy of said active map included in said consistency point.

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