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:
Oct. 14, 2008
Filed:
Sep. 27, 2005
Sameer Joshi, San Jose, CA (US);
Surojit Chatterjee, Cambridge, MA (US);
Ken Lee, San Jose, CA (US);
Jonathan Creighton, Oakland, CA (US);
Alok Srivastava, Newark, CA (US);
Sameer Joshi, San Jose, CA (US);
Surojit Chatterjee, Cambridge, MA (US);
Ken Lee, San Jose, CA (US);
Jonathan Creighton, Oakland, CA (US);
Alok Srivastava, Newark, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
A group of shared-storage resources are being maintained as replicas by the nodes of a cluster. Each node in the cluster maintains a set of pointers to the members of the group. As membership changes, the set of pointers should be changed accordingly. For various, reasons, the set of pointers of a node are not changed and may point to shared-storage resources that are no longer members of the group and/or not point to shared-storage resources that are members of the group. By recording a history of membership changes in the shared-storage resources, and comparing the recording to what a node thinks the shared resources should be, an incorrect set of pointers can be detected and corrective active undertaken.