Method and apparatus to enable finer-grained, scalable allocation of storage in a data storage system
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United States of America Patent
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Sep 29, 2020
Grant Date -
Dec 24, 2015
app pub date -
Feb 1, 2013
filing date -
Feb 1, 2013
priority date (Note) -
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Abstract
In one aspect, the invention is directed to a method of expanding storage for filesystems in a fine-grained, scalable manner. The method includes determining, by a file server, a run bias for a span, wherein the run bias indicates a number of contiguous chunks of memory associated with an entry in an address translation table for a filesystem. The method includes receiving, by the file server, a request for an expansion of memory for the filesystem. The method includes scoring, by the chunk allocator, each stripe set in a group of stripe sets based at least in part on a number of unused chunks on the stripeset and a number of chunks on the stripeset being used by the filesystem. The method includes allocating, by the chunk allocator, a chunk on the stripeset with the highest score, wherein the allocated chunk lies outside of runs reserved for other filesystems.
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