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:
Dec. 30, 2014
Filed:
Dec. 14, 2012
Emc Corporation, Hopkinton, MA (US);
Weigang Zhong, Beijing, CN;
YingChao Zhou, Beijing, CN;
Chen Gong, Beijiing, CN;
Yanbei Wang, Shrewsbury, MA (US);
Tao Sun, Beijing, CN;
EMC Corporation, Hopkinton, MA (US);
Abstract
A technique for managing usage metrics of quota trees in a file system includes storing, in an inode table that lists inodes of the file system, identifiers (IDs) of quota trees to which the inodes belong. To check the usage of a quota tree, the inode table is scanned for any inodes that reference the quota tree ID of that quota tree. All such inodes are identified, and their usage attributes are summed to calculate an overall usage metric for the quota tree as a whole. The improved technique thus avoids the need to scan directory structures on disk.