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:
Jul. 29, 2008
Filed:
Jan. 30, 2003
Jonathan Brassow, St. Paul, MN (US);
Michael J. Declerck, El Cerrito, CA (US);
Andrew Lewis, Roseville, MN (US);
Adam Manthei, Spring Lake, MN (US);
Matthew O'keefe, Plymouth, MN (US);
Kenneth Preslan, Minneapolis, MN (US);
David Teigland, Eagan, MN (US);
Jonathan Brassow, St. Paul, MN (US);
Michael J. Declerck, El Cerrito, CA (US);
Andrew Lewis, Roseville, MN (US);
Adam Manthei, Spring Lake, MN (US);
Matthew O'Keefe, Plymouth, MN (US);
Kenneth Preslan, Minneapolis, MN (US);
David Teigland, Eagan, MN (US);
Red Hat, Inc., Raleigh, NC (US);
Abstract
A distributed file system is disclosed. A plurality of disk servers, operating as a single distributed disk server layer, are connected to the one or more physical disks. Each disk server stores meta-data for each of the files. A plurality of lock servers, having one or more locks for each file operates as a single distributed lock server to coordinate access to the files stored by the disk server layer. A plurality of asynchronous file servers, operating as a single distributed file server layer in response to a request for a file from a user program: (i) retrieves the requested file from the disk server layer and at least one lock, associated with the retrieved file, from the lock server, and (ii) retrieves meta-data for at least one file that is related to the requested files, and at least one lock, for each file that has had its meta-data retrieved.