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:
Nov. 06, 2007
Filed:
Dec. 31, 2003
John Colgrove, Los Altos, CA (US);
Par Botes, Mountain View, CA (US);
Michael Timpanaro, Cupertino, CA (US);
Charles H. Silvers, Santa Clara, CA (US);
Peter Vajgel, Menlo Park, CA (US);
John Colgrove, Los Altos, CA (US);
Par Botes, Mountain View, CA (US);
Michael Timpanaro, Cupertino, CA (US);
Charles H. Silvers, Santa Clara, CA (US);
Peter Vajgel, Menlo Park, CA (US);
Veritas Operating Corporation, Mountain View, CA (US);
Abstract
System and method for performing operations in a multi-class file system without requiring split mirrors. For one or more storage classes in the multi-class file system, operations that require stable copies of the storage classes may be performed without using split mirrors. In one embodiment, read-only data may be assigned and/or migrated to lower storage classes, and operations may be performed on the read-only storage classes without using split mirrors. In one embodiment, to perform an operation without using a split mirror, a write lock of a storage class may be examined to determine if the write-locked storage class has been written to during the operation on the storage class and, if so, the operation may be retried for the storage class. In one embodiment, the file system software may be blocked from enabling a storage class for writing for the duration of the operation on the storage class.