Electrical computers and digital data processing systems: input/ – Input/output data processing – Flow controlling
Reexamination Certificate
2011-03-15
2011-03-15
Peyton, Tammara (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Flow controlling
C710S072000, C710S073000, C710S074000, C709S225000, C709S226000, C709S229000, C709S230000, C709S231000, C370S468000, C370S395100
Reexamination Certificate
active
07908410
ABSTRACT:
A method for preventing oversubscription to a file storage by multiple processes, whether such processes are operating on one node with directly attached storage or on several nodes of a computing cluster sharing a storage area network. Processes or nodes issue requests for bandwidth reservations to a controller daemon. The controller daemon maintains records of all existing bandwidth reservations and ensures that new reservations are granted only if a qualified bandwidth of the file storage will not be exceeded. The qualified bandwidth is empirically determined to take into account installation specific hardware configurations, workloads, and quality of service requirements. In conjunction with suitable enabled client kernels the controller daemon serves to encapsulate all I/O activity including non-reserved I/O activity to the file storage by issuing non-guaranteed bandwidth leases for use by each node in servicing non-guaranteed process I/O activity, such leases being revokable by the controller daemon in order to service new guaranteed bandwidth reservation requests.
REFERENCES:
patent: 5907683 (1999-05-01), Engelsiepen et al.
patent: 6788688 (2004-09-01), Trebes, Jr.
patent: 6804717 (2004-10-01), Bakshi et al.
patent: 7280561 (2007-10-01), Sahinoglu
patent: 7310678 (2007-12-01), Gunaseelan et al.
patent: 7818424 (2010-10-01), Raymond
patent: 2003/0078946 (2003-04-01), Costello et al.
patent: 2003/0093526 (2003-05-01), Nandagopalan et al.
patent: 2003/0212792 (2003-11-01), Raymond
patent: 2005/0086362 (2005-04-01), Rogers
Ellis et at., “Getting Started With XFS Filesystems, Chapter 5: Guaranteed-Rate I/O”, Silicon Graphics Online Manual, 1995, pp. 91-109.
Eppe, E., “Delivering Guaranteed-rate I/O to SANs in Video and Film Postproduction Facilities”, (pdf file at: http://www.sgi.com/pdfs/3647, 2004, pp. 1-11.
Johnson, L., “Guaranteed-Rate I/O Version 2 Guide”, Feb. 2004; http://techpubs.sig.com/library/tpl/cgi-bin/init.cgi, Feb. 2004, pp. 1-29.
Keshav, S., et al, “An Empirical Evaluation of Virtual Circuit Holding Time Policies in IP-over-ATM Networks”, Date unknown, pp. 1-13.
“SGI InfiniteStorage Shared Filesystem CXFS”, pdf file at: http://www.sgi.com/pdfs/2816.pdf), 2004, pp. 1-4.
IRIX 6.5.23 Man. Pages-uploaded to website Jan. 14, 2004-Feb. 3, 2004; http://techpubs.sgi.com/library/tpl/cgi-bin/init.cgi, pp. 1-22.
Gildfind Andrew Joseph Alexander
McDonell Ken J.
Peyton Tammara
Sunstein Kann Murphy & Timbers LLP
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