Lightweight coherency control protocol for clustered storage...

Details Lightweight coherency control protocol for clustered storage... Lightweight coherency control protocol for clustered storage...

2008-05-20

2008-05-20

Nguyen, T (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S144000

Reexamination Certificate

active

07376796

ABSTRACT:
A lightweight coherency control protocol ensures consistency of data containers, such as a file, and associated data buffers stored on one or more volumes served by a plurality of nodes, e.g., storage systems, connected as a cluster. Each data buffer is associated with a current cache sequence number comprising a load generation value and an update count value. The load generation value is incremented every time an inode of a file is loaded into a memory of the storage system. Once the inode is loaded and its load generation value is set, then the appropriate buffer of a buffer tree for the file is loaded into the memory. The update count value is incremented each time the buffer is updated with a write request/operation. Therefore, each buffer loaded into memory is tagged with the load generation value and an update count from the time that buffer is loaded.

REFERENCES:
patent: 4156907 (1979-05-01), Rawlings et al.
patent: 4399503 (1983-08-01), Hawley
patent: 4598357 (1986-07-01), Swenson et al.
patent: 4688221 (1987-08-01), Nakamura et al.
patent: 4698808 (1987-10-01), Ishii
patent: 4761785 (1988-08-01), Clark et al.
patent: 4805090 (1989-02-01), Coogan
patent: 4837675 (1989-06-01), Bean et al.
patent: 4864497 (1989-09-01), Lowry et al.
patent: 4896259 (1990-01-01), Jacobs et al.
patent: 4899342 (1990-02-01), Potter et al.
patent: 4989206 (1991-01-01), Dunphy, Jr. et al.
patent: 5124987 (1992-06-01), Milligan et al.
patent: RE34100 (1992-10-01), Hartness
patent: 5155835 (1992-10-01), Belsan
patent: 5426747 (1995-06-01), Weinreb et al.
patent: 5581724 (1996-12-01), Belsan et al.
patent: 5819292 (1998-10-01), Hitz et al.
patent: 5864837 (1999-01-01), Maimone
patent: 6636879 (2003-10-01), Doucette et al.
patent: 6671773 (2003-12-01), Kazar et al.
patent: 6782389 (2004-08-01), Chrin et al.
patent: 2004/0139161 (2004-07-01), Loh
patent: 2005/0108300 (2005-05-01), Findleton et al.
patent: 2005/0144178 (2005-06-01), Chrin et al.
patent: 2005/0192932 (2005-09-01), Kazar et al.
patent: 2005/0246401 (2005-11-01), Edwards et al.
patent: 2005/0278383 (2005-12-01), Kazar
patent: 0563622 (1993-10-01), None
patent: WO 89/10594 (1989-11-01), None
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority or the Declaration, PCT/US2006/041554, Mar. 9, 2007.
Administration Guide found at http://www.openafs.org/pages/doc/AdminGuide/auagd010.htm, visited on Mar. 2, 2005.
Basilico, et al.,Error Correction System Using “Shadow Memory,” IBM Technical Disclosure Bulletin, May 1984, pp. 5792-5793.
Bitton, Dina,Disk Shadowing,Proceedings of the 14thVLDB Conference, LA, CA (1988).
Blasgen, M.W. et al.,System R:An architectural Overview,Reprinted from IBM Systems Journal vol. 20, No. 1, 1981 © 1981, 1999.
Borenstein, Nathaniel S.,CMU's Andrew project a retrospective, Communications of ACM, 39(12), Dec. 1996.
Brown, Mark R. et al.,The Alpine file system, ACM Transactions on Computing Systems, 3(4):261-293, Nov. 1985.
Chen, Peter M., et al.,An Evaluation of Redundant Arrays of Disks Using an Amdahl 5890Performance Evaluation, pp. 74-85, 1990.
Chutani, Sailesh, et al.,The Episode file system, In Proceedings of the USENIX Winter 1992.
Clark, B.E., et al.,Applications System /400 Performance Characteristics, IBM Systems Journal, 28(3): 407-423, 1989.
Clark, Timothy A., et al.,Using the ISIS Resource Manager for Distributed, Fault-Tolerant Computing, IEEE 1993, pp. 257-265.
Data Sheet for the Check Point Software Technologies product Flood-Gate-1 (1997).
Dibble, Peter C., et al., Beyond Striping: The Bridge Multiprocessor File System, Computer Science Department, University of Rochester, Aug. 11, 1989.
Douglis, Fred, et al.,A comparison of two distributed systems: Amoeba and Sprite—Computing Systems, 4(4), Fall 1991, pp. 353-385 ?{copy of article I have has no date or cite}.
Gait, Jason,Phoenix: A Safe In-Memory File System. Communications of the ACM, 33(1):81-86, Jan. 1990.
Hartman, John H. et al.,Performance Measurements of a Multiprocessor Sprite Kernel, Proceedings of the USENIX Conference, 1990.
Hitz, Dave et al.,File System Design for an NFS File Server Appliance, Technical Report 3002, Rev. C395, presented Jan. 19, 1994.
Howard, John H, et al.Scale and Performance in a Distributed File System, Carnegie Mellon University, CMU-ITC-87-068, Aug. 5, 1987.
Howard, John, H. et al.,Scale and performance in a distributed file system, ACM Trans. Computer. System., 6(1), Feb. 1988 pp. 51-81.
Howard, John H.,An Overview of the Andrew File System, Carnegie Mellon University, CMU-ITC-88-062.
The IBM System/38, Chapter 8, pp. 137-15.
Isomaki, Markus,Differentiated Service for the Internet, Department of Technical Physics and Mathematics, May 9, 1998.
Kazar, Michael L., et al.,Decorum File System Architectural Overview, USENIX Summer Conference, Anaheim, California, 1990.
Lomet, David., et al.,The performance of a multiversion access method, ACM SIGMOD International Conference on Management of Data, 19:353-363.
Lorie, Raymond, A,Physical integrity in a large segmented database, ACM Trans. Database Systems, (2)1:91-104, Mar. 1977.
Lorie, RA,Shadow Page Mechanism, IBM Technical Disclosure Bulletin, Jun. 1986, pp. 340-342.
McKusick, Marshall Kirk, et al.,A Fast File System for UNIX, Computer Science Division, Department of Electrical Engineering and Computer Sciences, Univ. of CA, Berkley, Feb. 18, 1994.
Miller, Ethan L., et al.,RAMA:A File System for Massively Parallel Computers, 12thIEEE Symposium on Mass Storage Systems, Monterey CA, Apr. 1993, pp. 163-168.
Moons, Herman et al.,Location-Independent Object Invocation in Open Distributed Systems, Autumn 1991 EurOpen Technical Conference and Exhibition, pp. 287-300 (Sep. 16-20, 1991).
Morris, James H., Et Al,Andrew: A Distributed Personal Computing Environment, Comm. of the ACM, vol. 29, Mar. 1986, pp. 184-201.
Mullender, Sape J., et al.,A distributed file service based on optimistic concurrency control, ACM Symposium on Operating System Principles (Orcas Island, Washington). Published as Operating Systems Review, 19(5):51-62. Dec. 1985.
Muller, Keith, et al.,A High Performance Multi-Structured File System Design, In Proceedings of the 13th ACM Symposium on Operating Systems Principles, Oct. 1991, pp. 56-67.
Ousterhout, John K. et al.,The Sprite Network Operating System, Computer Science Division, Department of Electrical Engineering and Computer Sciences, Univ. of CA, Berkley, Nov. 19, 1987.
Ousterhot, John et al.,Beating the I/O Bottleneck: A Case for Log-Structured File Systems, Technical Report, Computer Science Division, Electrical Engineering and Computer Sciences, University of California at Berkeley, Oct. 30, 1988.
Ousterhout, John,Why Aren't Operating Systems Getting Faster as Fast as Hardware?, Digital WRL Technical Note TN-11, Oct. 1989.
Ousterhout, John,A Brief Retrospective On The Sprite Network Operating System, found at http://www,cs,berkeley.edu/projects/sprite/retrospective.html,visited on Mar. 11, 2005.
Patterson, D., et al.,A Case for Redundant Arrays of Inexpensive Disks(RAID),-Technical Report, CSD-87-391, Computer Science Division, Electrical Engineering and Computer Sciences, University of California at Berkeley (1987).
Patterson, D., et al.,A Case for Redundant Arrays of Inexpensive Disks(RAID),-SIGMOD International Conference on Management of Data, Chicago, IL, USA, Jun. 1-3, 1988, SIGMOD Record (17)3:109-16 (Sep. 1988).
Peterson, Zachary Nathaniel Joseph,Data Placement for Copy-on-Write Using Virtual Contiguity. University of CA, Santa Cruz, Master of Science in Computer Science Thesis, Sep. 2002.
Quinlan, Sean,A Cached WORM File System, Software-Practice and Experience, 21(12):1289-1299 (1991).
Redundant Array of Independent Disks, from Wikipedia, the free encyclopedia, found at http://en.wikipedia.org/wiki/RAID, visited on Mar. 9, 2005.
Rosenberg, J., et al.,Stability in a Persistent Store Based on a Large Virtual Memory. In Security and Persistence, Rosenber, J. & Keedy, J.L. (ed), Springer-Verlag (1990) pp. 229-245.
Rosenblum, Mendel, et al.

Affiliated with

Also associated with

Rating

Lightweight coherency control protocol for clustered storage... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lightweight coherency control protocol for clustered storage..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lightweight coherency control protocol for clustered storage... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2773395