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BLOCK LEVEL BACKUP AND RESTORE

  • US 20130080391A1
  • Filed: 05/24/2012
  • Published: 03/28/2013
  • Est. Priority Date: 09/23/2011
  • Status: Active Grant
First Claim
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1. A method for block level backup, comprising:

  • creating, using a processor of a backup server, a full image level backup of a file system from production storage at a production server to random access storage at the backup server;

    performing file enumeration on a mounted image created from the full image that exposes a block level representation of the file system for files;

    monitoring block level read operations that reference meta-data blocks while the files are being enumerated;

    during monitoring of the block level read operations, marking blocks that are read for the read operations as meta-data blocks;

    identifying blocks that are not marked as meta-data blocks as data blocks; and

    migrating the data blocks to sequential storage, while leaving the meta-data blocks on the random access storage, wherein the data blocks form a backup image.

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