Distributed file system and method
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United States of America Patent
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Jul 22, 2014
Grant Date -
Feb 9, 2012
app pub date -
Oct 14, 2011
filing date -
Nov 1, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A distributed file system and method distributes file system objects across multiple self-contained volumes, where each volume is owned by a unique file system node. Logical links are used to reference a file system object between volumes. Each file system node includes a relocation directory in which is maintained hard links to locally-stored file system objects that are referenced from another file system node using logical links. Various file system operations that involve multiple volumes are performed without having to place a write lock on more than one volume at a time. Various caching schemes allow the various file system nodes to cache file system object data and metadata.
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