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:
Mar. 08, 2022
Filed:
Apr. 22, 2020
Netapp, Inc., Sunnyvale, CA (US);
Parag Sarfare, San Jose, CA (US);
Ananthan Subramanian, San Ramon, CA (US);
Szu-Wen Kuo, Taipei, TW;
Asif Imtiyaz Pathan, Sunnyvale, CA (US);
Santhosh Selvaraj, San Jose, CA (US);
Nikhil Mattankot, Pleasanton, CA (US);
Manan Patel, Sunnyvale, CA (US);
Travis Ryan Grusecki, Santa Clara, CA (US);
NETAPP, INC., San Jose, CA (US);
Abstract
Failover methods and systems for a networked storage environment are provided. A filtering data structure and a metadata data structure are generated before starting a replay of a log stored in a non-volatile memory of a second storage node, during a failover operation initiated in response to a failure at a first storage node. The second storage node operates as a partner node of the first storage node to mirror at the log one or more write requests received by the first storage node prior to the failure, and data associated with the one or more write requests. The filtering data structure identifies each log entry and the metadata structure stores a metadata attribute of each log entry. The filtering data structure and the metadata structure are used for providing access to a logical storage object during the log replay from the second storage node.