Dynamic rewrite of files within deduplication system
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United States of America Patent
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Aug 26, 2014
Grant Date -
Aug 22, 2013
app pub date -
Apr 3, 2013
filing date -
Dec 1, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An original deduplication file system (DFS) file is partitioned into a first set of sections being sections including data affected by rewrite operations and a second set of sections being sections including data unaffected by rewrite operations. A new DFS file to be stored as part of a plurality of user files is created, the plurality of user files including the original DFS file and being accessible by a sequential DFS and a dynamic non-DFS, the dynamic non-DFS including a plurality of dynamic metadata files having entries pointing to corresponding sections of the original DFS files. The first set of sections of the original DFS file including data affected by rewrite operations is directly written into the new DFS file. The second set of sections from the original DFS file including data unaffected by rewrite operations is quoted into the new DFS file. The original DFS file is deleted.
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