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:
Apr. 07, 2009
Filed:
Jul. 22, 2005
Thomas Haynes, Tulsa, OK (US);
Stephen Daniel, Durham, NC (US);
Joseph Richart, Raleigh, NC (US);
Pranoop Erasani, Sunnyvale, CA (US);
Thomas Haynes, Tulsa, OK (US);
Stephen Daniel, Durham, NC (US);
Joseph Richart, Raleigh, NC (US);
Pranoop Erasani, Sunnyvale, CA (US);
Network Appliance, Inc., Sunnyvale, CA (US);
Abstract
A method and system performs fencing techniques in a host cluster storage environment. A fencing application program interface resides in one or more storage systems. When a message is received by said storage system from a cluster member, the storage system in turn modifies the NFS export lists of one or more storage systems to restrict further access by the failed cluster node to otherwise fence the failed cluster node off from that storage system or from certain directories within that storage system. Prior to said access permission rights being changed, NFS operations are locked and drained, NFS locks are removed after which the export lists are modified. Once the fencing operations are performed, the NFS operations are served again by the storage system.