System and method for efficiently guaranteeing data consistency to clients of a storage system cluster
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United States of America Patent
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Aug 5, 2008
Grant Date -
N/A
app pub date -
Oct 28, 2005
filing date -
Dec 2, 2003
priority date (Note) -
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Abstract
A system and method efficiently guarantees data consistency to clients for one or more data containers stored on a plurality of volumes configured as a striped volume set (SVS) and served by a plurality of nodes connected as a cluster. Data consistency guarantees of data containers stored on the SVS is generally provided by delegating to data volumes (DVs) sufficient authority to autonomously service input/output (I/O) requests directed to the containers using attributes, such as timestamps, of the containers. Specifically, a DV is only allowed to service I/O requests, e.g., read and write operations, to a data container, such as a file, if it has a valid ticket book for the file. A DV requests and is granted the ticket book from a container attribute volume (CAV) on a per-file basis.
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