The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2020
Filed:
Feb. 01, 2013
Hitachi Vantara Llc, Santa Clara, CA (US);
Mark Stephen Laker, Eastleigh, GB;
HITACHI VANTARA LLC, Santa Clara, CA (US);
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.