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File name level based file search and restoration from block level backups of virtual machines

  • US 10,585,760 B2
  • Filed: 10/19/2016
  • Issued: 03/10/2020
  • Est. Priority Date: 10/19/2016
  • Status: Active Grant
First Claim
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1. A method for accessing filesystem objects on a backup server storing block level backups of a computing system, comprising:

  • generating a global history table on the backup server based on block level backups and associated local history tables received from one or more virtual machines;

    receiving a request to access a filesystem object stored in the block level backups, the request including a pattern of characters for identifying the filesystem object in the global history table mapping a history of filesystem objects to the block level backups;

    identifying, based on the pattern of characters, an object identifier in the global history table corresponding to the filesystem object;

    identifying, based on the object identifier, a set of one or more block level backups of the computing system having a copy of the filesystem object;

    selecting a block level backup from the set of one or more block level backups;

    mounting the selected block level backup to access a backed-up file system of the computing system; and

    retrieving, from the backed-up filesystem, the filesystem object.

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