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DETECTION OF LOGICAL CORRUPTION IN PERSISTENT STORAGE AND AUTOMATIC RECOVERY THEREFROM

  • US 20130055018A1
  • Filed: 08/31/2011
  • Published: 02/28/2013
  • Est. Priority Date: 08/31/2011
  • Status: Active Grant
First Claim
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1. A computer implemented method for restoring a block of data stored at a corrupted data site using two or more mirror sites within a disk group, the method comprising:

  • receiving, at a server, a trigger event from a component within an application server environment the trigger event indicating at least one corrupted block using a block identifier;

    classifying the trigger event into at least one of a plurality of trigger event types;

    retrieving, from at least two mirror sites, a first stored data block corresponding to the block identifier from a first mirror site, and a second stored data block corresponding to the block identifier from a second mirror site;

    comparing the first stored data block to the second stored data block to determine a match value; and

    writing, to the corrupted data site, the first stored data block when the match value is greater than a confidence threshold.

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