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:
Jun. 01, 2010
Filed:
Nov. 02, 2006
Toby Smith, Pittsburgh, PA (US);
Richard P. Jernigan, Iv, Ambridge, PA (US);
Robert Wyckoff Hyer, Jr., Mars, PA (US);
Michael Kazar, Pittsburgh, PA (US);
David B. Noveck, Lexington, MA (US);
Peter Griess, San Francisco, CA (US);
Toby Smith, Pittsburgh, PA (US);
Richard P. Jernigan, IV, Ambridge, PA (US);
Robert Wyckoff Hyer, Jr., Mars, PA (US);
Michael Kazar, Pittsburgh, PA (US);
David B. Noveck, Lexington, MA (US);
Peter Griess, San Francisco, CA (US);
NetApp, Inc., Sunnyvale, CA (US);
Abstract
A system and method manages lock state information in a storage system. A meta-data volume node includes a lock state database which is a comprehensive source for lock state information about data containers in the system. A plurality of data volume nodes include local lock caches, which contain information about locks. Lock state messaging between the meta-data volume node and the data volume nodes is used to assign locks and to update local lock caches. The meta-data volume node is configured to determine whether input/output requests should be allowed or denied and to instruct the data volume nodes of this input/output operation result. Lock information is also sent to the data volume nodes for storage in local lock state caches to the extent the data volume nodes have the network capacity locally.