Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2007-03-14
2011-10-04
Bragdon, Reginald (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S163000
Reexamination Certificate
active
08032725
ABSTRACT:
Embodiments of the present invention provide a mechanism by which a server system executing a host application monitors utilization of overwrite reserve space on a volume storing application data. The server system executes space reservation policies to ensure that the volume cannot run out of space due to snapshot creation. In one implementation, the server system initiates deletion of backup datasets stored on the volume if certain criteria provided by a system administrator are met. If deleting backup datasets cannot not stop the volume from running out of space due to continuous snapshot creation, the server system prevents the host application from temporarily issuing I/O requests to the storage system until space is recovered. Preventing the host application from issuing I/O requests, rather than failing I/O requests by the storage system, eliminates undesirable consequences, such as loss of data and the need to perform data recovery.
REFERENCES:
patent: 6397348 (2002-05-01), Styczinski
patent: 7373364 (2008-05-01), Chapman
patent: 2001/0054121 (2001-12-01), Proch et al.
patent: 2003/0112685 (2003-06-01), Duh et al.
patent: 2006/0117157 (2006-06-01), Kitamura
patent: 2007/0043737 (2007-02-01), Nagamatsu et al.
patent: 2009/0144499 (2009-06-01), Nicholson et al.
Laplander et al. nanoBackup. Northern Arizona University, Aug. 3, 2005 [online], [retrieved on Jun. 11, 2009]. Retrieved from the Internet <URL: https://www4.nau.edu/its/mensa/services/Software
anoBackup/>.
Smoot et al. “Method and System of Automatically Monitoring a Storage Server”, U.S. Appl. No. 11/366,042, filed Mar. 1, 2006, 36 pages.
Aggarwal et al. “System and Method for Flexible Space Reservations in a File System Supporting Persistant Consistency Point Images”, U.S. Appl. No. 10/991,225, filed Nov. 17, 2004, 43 pages.
Malinowski et al. “Backup Data Management on a Fractionally Reserved Storage System”, U.S. Appl. No. 11/668,760, filed Jan. 30, 2007, 40 pages.
Malinowski Pawel
Mankovsky Michael
Bragdon Reginald
Cesari and McKenna LLP
Mackall Larry
NetApp, Inc.
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