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:
Jan. 04, 2022
Filed:
Apr. 22, 2020
Netapp, Inc., Sunnyvale, CA (US);
Szu-Wen Kuo, Taipei, TW;
Parag Sarfare, San Jose, CA (US);
Ananthan Subramanian, San Ramon, CA (US);
Asif Imtiyaz Pathan, Sunnyvale, CA (US);
Santhosh Selvaraj, San Jose, CA (US);
Nikhil Mattankot, Pleasanton, CA (US);
NETAPP, INC., San Jose, CA (US);
Abstract
Failover methods and systems for a networked storage environment are provided. A metadata data structure is generated, before starting a replay of entries at 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, and the metadata structure stores a metadata attribute of each log entry. Furthermore, the metadata attribute of each log entry is persistently stored. The persistently stored metadata attribute is used to respond to a read request received during the replay by the second storage node, while a write request metadata attribute of a write request is used for executing the write request received by the second storage node during the replay.