Patent · US Active

Efficient management of file system quota trees

US8924364B1 · kind B1 · utility

42Cited by

3References

16Claims

0Family size

Assignee

EMC Corporation · US

Inventors

Weigang Zhong · Beijing, CN
Yingchao Zhou · Beijing, CN
Chen Gong · Nanjing, CN
Yanbei Wang · Southborough, US
Tao Sun · Nanjing, CN

Key dates

Filing date	Dec 14, 2012
Grant date	Dec 30, 2014
Priority date	—
Expiry date	Feb 20, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/13
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.