Method and system for repairing partially damaged blocks
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United States of America Patent
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May 11, 2010
Grant Date -
Aug 23, 2007
app pub date -
Apr 19, 2006
filing date -
Nov 4, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A method for reconstructing a logical block, wherein the logical block comprises a first set of sectors. The method including obtaining a copy of the logical block comprising a second set of sectors, determining which of the sectors in the first set of sectors are identical to sectors in the second set of sectors to obtain identical sectors, selecting a first combination of non-identical sectors from the first set of sectors and the second set of sectors, combining a copy of each of the identical sectors with the first combination of non-identical sectors to obtain a first reconstructed logical block, calculating a first checksum for the first reconstructed logical block, and determining whether the first calculated checksum is equal to the stored checksum associated with the first logical block.
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