Managing metadata and data for a logical volume in a distributed and declustered system
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United States of America Patent
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Feb 21, 2017
Grant Date -
Sep 24, 2015
app pub date -
Jun 3, 2015
filing date -
Apr 16, 2013
priority date (Note) -
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Abstract
Methods, apparatus and computer program products for a distributed system include dividing logical volume data into data subsets, and defining at least one distributedly storage configuration for the logical volume. Metadata for the logical volume is written to a first set of first metadata tables, and the first set of first metadata tables is divided into metadata subsets having a one-to-one correspondence with the data subsets. The metadata subsets are distributed among the multiple digital information devices, and the metadata is copied from the first set of first metadata tables to a second set of corresponding second metadata tables in a one-to-one correspondence with the first metadata tables.
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