Management of directory quotas for file systems

Details Management of directory quotas for file systems Management of directory quotas for file systems

2011-06-14

2011-06-14

Trujillo, James (Department: 2159)

Data processing: database and file management or data structures

File management

File systems

C707S822000, C707S828000, C707S829000

Reexamination Certificate

active

07962532

ABSTRACT:
A new approach to support efficient management of directory quotas for a file system is proposed. The approach adopts bitmasks for files and directories in a file system, and transforms the problem of maintaining and traversing complicated file system data structures into a simple bitmask comparison and an associated lookup. It applies to files and directories under CIFS, NFS, other network file systems and local file systems and moves the costly operations of traversing the file system from file operations to administrative operation of switching the quotas on and off, which is infrequent and do not have the performance requirements of regular file operations.

REFERENCES:
patent: 2003/0009484 (2003-01-01), Hamanaka et al.
patent: 2005/0050107 (2005-03-01), Mane et al.
patent: 2006/0117070 (2006-06-01), Thind et al.
patent: 2008/0028149 (2008-01-01), Pardikar et al.
patent: 2008/0291855 (2008-11-01), Bata et al.

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