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. 11, 2005
Filed:
Apr. 17, 2001
Daniel A. Muntz, Cupertino, CA (US);
Daniel A. Muntz, Cupertino, CA (US);
Hewlett Packard Development Company, L.P., Houston, TX (US);
Abstract
System and method for managing leases in a distributed file system. A meta-data server is employed to manage leases to the objects in the distributed file system, and a plurality of storage servers provide data storage for the objects. The meta-data server grants leases for objects to the clients. With each lease granted, the meta-data server provides data that indicate the time at which the lease will expire for the associated object. The lease expiration time is included in a subsequent request to the storage server for access to the object. The storage server determines whether the lease has expired. If the lease has expired, the requested access is denied. Otherwise, the storage server provides the requested access.