Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2006-02-28
2006-02-28
Amsbury, Wayne (Department: 2161)
Data processing: database and file management or data structures
Database design
Data structure types
C709S226000, C709S241000, C707S793000, C707S793000
Reexamination Certificate
active
07007047
ABSTRACT:
A system and method to perform a system-wide file system image without time smear in a distributed object-based data storage system. A realm manager is elected as an image master using the Distributed Consensus Algorithm to execute image-taking. All pending write capabilities are invalidated prior to taking the system-wide file system image so as to quiesce the realm and prepare the storage system for the system-wide image. Once the system is quiesced, the image master instructs each storage manager in the system to clone each live object group contained therein without explicitly cloning any objects contained in such object group. In one embodiment, a file manager copies an object in the system before a write operation is performed on that object after the image is taken. Neither the cloning operation nor the copying operation update any directory objects in the system. At run time, a client application may use a mapping scheme to access objects contained in the system-wide image.
REFERENCES:
patent: 5303379 (1994-04-01), Khoyi et al.
patent: 5634124 (1997-05-01), Khoyi et al.
patent: 5680619 (1997-10-01), Gudmundson et al.
patent: 5764877 (1998-06-01), Lomet et al.
patent: 5845082 (1998-12-01), Murakami
patent: 5946686 (1999-08-01), Schmuck et al.
patent: 5956713 (1999-09-01), Bamford et al.
patent: 5956734 (1999-09-01), Schmuck et al.
patent: 5960446 (1999-09-01), Schmuck et al.
patent: 5987477 (1999-11-01), Schmuck et al.
patent: 5991763 (1999-11-01), Long et al.
patent: 5999179 (1999-12-01), Kekic et al.
patent: 6014651 (2000-01-01), Crawford
patent: 6023706 (2000-02-01), Schmuck et al.
patent: 6128621 (2000-10-01), Weisz
patent: 6135646 (2000-10-01), Kahn et al.
patent: 6233623 (2001-05-01), Jeffords et al.
patent: 6850893 (2005-02-01), Lipkin et al.
patent: 2002/0107945 (2002-08-01), George et al.
patent: 2002/0161889 (2002-10-01), Gamache et al.
patent: 2002/0174168 (2002-11-01), Beukema et al.
Article by Garth A. Gibson et al. entitled “A Cost-Effective, High-Bandwidth Storage Architecture”, pp. 92-103, Association for Computing Machinery, 1998.
Article by Yehuda Afek et al. entitled “Atomic Snapshots of Shared Memory,” pp. 1-13, Association for Computing Machinery, 1990.
Article by Garth A. Gibson and Rodney Van Meter entitled “Network Attached Storage Architecture”, pp. 37-45, Communications of the ACM, Nov. 2000, vol. 43, No. 11.
Article by Andreas Dilger & Peter J. Braam entitled “Object Based Storage HOWTO”, pp. 1-13, Version 2, Dec. 23, 1999, available at http://www.lustre.org/docs.
Article by Leslie Lamport entitled “The Part-Time Parliament,” pp. i-vi, 1-42, Digital Equipment Corporation, Sep. 1, 1989.
Holland Mark C.
Zelenka James D.
Amsbury Wayne
Morgan & Lewis & Bockius, LLP
Panasas, Inc.
LandOfFree
Internally consistent file system image in distributed... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Internally consistent file system image in distributed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internally consistent file system image in distributed... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3660973