Aggregated lock management for locking aggregated files in a switched file system
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United States of America Patent
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Apr 9, 2013
Grant Date -
N/A
app pub date -
Mar 20, 2009
filing date -
Jan 11, 2001
priority date (Note) -
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Abstract
A switched file system, also termed a file switch, is logically positioned between client computers and file servers in a computer network. The file switch distributes user files among multiple file servers using aggregated file, transaction and directory mechanisms. The file switch ensures consistent and atomic behavior of the switched file system by aggregating in a deterministic way the transactions initiated by the client of multiple independent file switches so that only one of the multiple concurrent transactions attempted on the same aggregated data file may succeed, or so that the transactions are serialized so as to be performed as a sequence of atomic operations. In addition, the integrity of the aggregated data file is safeguarded by issuing locking requests on behalf of certain client applications that do not observe locking mechanism consistently.
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