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:
May. 20, 2014
Filed:
Oct. 30, 2009
Murthy V. Mamidi, San Jose, CA (US);
Kadir Ozdemir, San Jose, CA (US);
Charles Silvers, Santa Clara, CA (US);
Paul Massiglia, Colorado Springs, CO (US);
Anindya Banerjee, Pune, IN;
Ronald Karr, Palo Alto, CA (US);
Murthy V. Mamidi, San Jose, CA (US);
Kadir Ozdemir, San Jose, CA (US);
Charles Silvers, Santa Clara, CA (US);
Paul Massiglia, Colorado Springs, CO (US);
Anindya Banerjee, Pune, IN;
Ronald Karr, Palo Alto, CA (US);
Symantec Corporation, Mountain View, CA (US);
Abstract
A method for identifying data for relocation in a multivolume file system. The method includes generating a file location map, the file location map containing a list of the locations of files that occupy space on each of a plurality of volumes of the file system, wherein The file system comprising least a first volume and a second volume. The method further includes updating the file location map in accordance with changes in a file change log for the file system, and identifying data residing on the first volume of the file system by scanning the file location map. Using the identified data, a ratio of per-file activity during a first time period relative to overall file system activity over a second time period is calculated to derive a file activity ratio for each of the files of the identified data. Files are then selected for relocation based on the file activity ratio.