Implementing read/write, multi-versioned file system on backup data

Implementing read/write, multi-versioned file system on backup data

  • CN 101,404,567 A
  • Filed: 03/28/2008
  • Published: 04/08/2009
  • Est. Priority Date: 03/30/2007
  • Status: Active Application
First Claim
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1. computer system comprises:

  • Be coupled to first main frame of backup medium, described backup medium is arranged to storage a plurality of Backup Data objects and a plurality of data segment, and each data object is quoted one or more in described a plurality of data segment;

    AndSecond main frame is arranged to;

    To the write request of first main frame transmission recognition data entity, wherein said data entity comprises the data segment of being quoted by first data object in described a plurality of Backup Data objects;

    Transmit the data variation of indicating the modification that described data entity is carried out to first main frame;

    Wherein in response to described write request, first main frame is arranged to;

    Recover the copy of described data entity;

    AndSecond data object of the data segment of being quoted by first data object is quoted in establishment;

    AndWherein first main frame further is arranged to;

    Add one or more data segments to second data object and quote in response to receiving data variation, described data variation is added data or from the part of described copy delete data segment to described copy;

    AndIf data variation is deleted all data segments from described copy, then from second data object, remove data segment and quote.

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