System and method for supporting change notify watches for virtualized storage systems
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United States of America Patent
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Oct 5, 2010
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app pub date -
Nov 30, 2007
filing date -
Nov 30, 2007
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Abstract
P” mapping) to walk a file system tree backwards from the data blocks to their ancestors to determine whether there are applicable watches on ancestor directories, and to obtain a pathname (e.g., relative) of the watched (changed) data. In particular, changes to data received from different protocols (e.g., CIFS, NFS, HTTP, etc.) can trigger watches to clients on the virtualized storage system. Also, performance may be enhanced using various caching techniques, and watch state may be retained while moving watched data across volumes of the virtualized storage system.
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