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. 28, 2016
Filed:
Apr. 05, 2013
Symantec Corporation, Mountain View, CA (US);
Mithlesh Thukral, Maharashtra, IN;
Mukesh Bafna, Pune, IN;
Shirish Vijayvargiya, Pune, IN;
Sanjay Jain, Maharashtra, IN;
Sushil Patil, Maharashtra, IN;
Sanjay Kumar, Patna, IN;
Anindya Banerjee, Barrackpore, IN;
Veritas Technologies LLC, Mountain View, CA (US);
Abstract
Caching metadata that identify hot blocks at a per local cache level are tracked. Tracked caching metadata are maintained so as to be persistent and shared across nodes of the cluster. Local caches are pre-warmed by using maintained caching metadata, responsive to detecting specific node level events. Such events can result in hot blocks being absent from a local cache, such as a failover between nodes or an unexpected failure local to a specific node. Another event example is the access of shared storage content, such as opening a file or mounting a file system by a specific node, in response to which the associated local cache can be pre-warmed using the tracked caching metadata for the specific file, or for each file of the file system. To pre-warm a local cache, hot blocks of stored content identified by corresponding caching metadata are loaded into the local cache.