Recovering data from corrupted encoded data slices
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United States of America Patent
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Mar 29, 2016
Grant Date -
May 1, 2014
app pub date -
Sep 16, 2013
filing date -
Oct 30, 2012
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Abstract
A method begins by a dispersed storage (DS) processing module receiving a set of encoded data slices, where some of the encoded data slices have an integrity issue such that less than a decode threshold number of encoded data slices have valid integrity. The method continues with the DS processing module creating partial coded matrices from the set of encoded data slices and generating partial decoding matrices. The method continues with the DS processing module generating a test data matrix based on the partial coded matrices and the partial decoding matrices, encoding the test data matrix into a set of test encoded data slices, and generating integrity information for the set of test encoded data slices. When the integrity information is valid, the method continues with the DS processing module utilizing the test data matrix as a data matrix and converting the data matrix into a recovered data segment.
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