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:
Jun. 23, 2015
Filed:
May. 31, 2012
Juan R. Loaiza, Woodside, CA (US);
Kothanda Umamageswaran, Sunnyvale, CA (US);
Boris Erlikhman, Mountain View, CA (US);
David Friedman, New York, NY (US);
Jia Shi, Burlingame, CA (US);
Zuoyu Tao, Belmont, CA (US);
Alex Tsukerman, Foster City, CA (US);
Juan R. Loaiza, Woodside, CA (US);
Kothanda Umamageswaran, Sunnyvale, CA (US);
Boris Erlikhman, Mountain View, CA (US);
David Friedman, New York, NY (US);
Jia Shi, Burlingame, CA (US);
Zuoyu Tao, Belmont, CA (US);
Alex Tsukerman, Foster City, CA (US);
ORACLE INTERNATIONAL CORPORATION, Redwood Shores, CA (US);
Abstract
Dirty data in a storage device is made current through rapid re-silvering, which uses a mirrored and up-to-date version of the dirty data from another storage device to recover the data. Because under rapid re-silvering cache metadata in volatile memory survives the failure of the cache, the cache metadata is used to determine which subset of data from the other storage device needs to be copied to the storage device being re-silvered. During re-silvering, cache metadata is used to determine which I/O requests from clients are requests for data that is not stale.