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:
Feb. 01, 2005
Filed:
Aug. 13, 2001
Steven H. Rodrigues, Mountain View, CA (US);
Rajesh Sundaram, Mountain View, CA (US);
Steven H. Rodrigues, Mountain View, CA (US);
Rajesh Sundaram, Mountain View, CA (US);
Network Appliance, Inc., Sunnyvale, CA (US);
Abstract
A system and method for managing a time-limited long-running process that acts upon disks of a disk array is based upon a general rule of acting upon each disk in an order based upon the length of time from when it was last acted-upon. Disks having the greatest last acted-upon time value (e.g. were processed the longest-time ago) are queued first by the process for acting-upon in the present run. The greatest last acted-upon time includes disks that have no prior last acted-upon time (e.g. newly added/mounted disks). A registry key entry is maintained in a registry file for each of the RAID groups that includes the volume's file system identifier (FSID) and particular RAID group identifier to (RGID). The RGID includes the last acted-upon time for the RAID group. This is set to a positive time number if the process has last acted-upon the group to completion. Alternatively, the last acted-upon time value is set to zero if the volume has not previously been acted-upon to completion or the RAID group is newly mounted.