Accessing snapshots of a time based file system
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United States of America Patent
Stats
-
Mar 5, 2013
Grant Date -
Oct 28, 2010
app pub date -
Apr 22, 2009
filing date -
Apr 22, 2009
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A file system driver stored in a computational device receives a request to provide access to a snapshot of a rewritable file system at a selected point in time, wherein a plurality of tokens corresponding to a plurality of data units are stored in the rewritable file system, and wherein an ordering relationship is maintained among the plurality of tokens. The file system driver determines a token corresponding to the selected point in time based on the ordering relationship. A virtual subdirectory name is generated corresponding to the determined token. A virtual subdirectory is created with the generated virtual subdirectory name, wherein the virtual subdirectory is a subdirectory of a root directory. The snapshot is accessed via the subdirectory.
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