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:
Feb. 06, 2024
Filed:
Feb. 05, 2020
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Vishal Chandra Tiwary, Cupertino, CA (US);
Xiaobing Zhang, Saratoga, CA;
Abhishek Rajimwale, San Jose, CA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Different logical partitions representing parts of a distributed file system global namespace are hosted on some cluster nodes, e.g., metadata nodes. File content and shadow logical partitions corresponding to the different logical partitions are hosted on other nodes, e.g., data nodes. Each file is associated with a metadata and data node. TCP links are established between nodes. Upon opening files, a file manager server session is generated between each pair of nodes associated with the open files to track open states and is recorded in a mapping table. The mapping table identifies each open file and associated nodes. When a metadata or data node of a particular pair of nodes associated with an open file becomes unavailable, the mapping table is consulted to identify another of the metadata or data node associated with the open file. Crash recovery protocols are performed on the other of the metadata or data node.