Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2004-12-14
2008-12-30
Vo, Tim (Department: 2168)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C714S001000, C714S015000, C714S016000, C714S019000, C714S020000
Reexamination Certificate
active
07472138
ABSTRACT:
A system and method in a data processing system for recovering data in a file system. A request to modify a data block in the file system is detected. In response to detecting the request to modify the data block, metadata describing the data block in the file system is written in a log. In response to detecting an error during the writing of the metadata, an error counter is incremented. Finally, in response to a request to recover the data in the file system, the metadata is read only if the error counter is less than or equal to a predetermined value.
REFERENCES:
patent: 4507751 (1985-03-01), Gawlick et al.
patent: 5043871 (1991-08-01), Nishigaki et al.
patent: 5086502 (1992-02-01), Malcolm
patent: 5684991 (1997-11-01), Malcolm
patent: 6122629 (2000-09-01), Walker et al.
patent: 6286011 (2001-09-01), Velamuri et al.
patent: 6714951 (2004-03-01), Bills et al.
patent: 6996580 (2006-02-01), Bae et al.
patent: 2004/0153923 (2004-08-01), Goel et al.
patent: 2004/0225689 (2004-11-01), Dettinger et al.
patent: 2005/0210073 (2005-09-01), Oeda et al.
patent: 2006/0259940 (2006-11-01), Schaefer et al.
patent: 2006/0259949 (2006-11-01), Schaefer et al.
patent: 2008/0155548 (2008-06-01), Dettinger et al.
Adkins et al., “Method and Apparatus for File System Snapshot Persistence”, US Utility Patent Application, Filed Feb. 12, 2004, 42 pages.
Chang et al., “Method and Apparatus for Ensuring Valid Journaled File System Metadata During a Backup Operation”, US Utility Patent Application, Filed Oct. 9, 2003, 44 pages.
Shaffer, JJ, “Generating Sympton Strings for AIX System Dumps”, IBM Confidential Disclosure, date printed: Sep. 1, 2004, vol. 38, n10, 10-95, p. 219-220, Austin, Texas.
Duvall et al., “Database Server Journaling Recursion Heuristic”, IBM Confidential Disclosure, date printed Sep. 1, 2004, vol. 36, n2, p. 13-14, Boulder, CO.
Levine, PE, “Page Inconsistency Recovery and Avoidance”, IBM Confidential Disclosure, Mar. 1989, Research Disclosure No. n299 03-89, Austin, Texas.
Duvall et al., “Database Server Journal Backup Automation Technique”, IBM Confidential Disclosure, date printed Sep. 1, 2004, vol. 36, n2 02-93 p. 463-464, Austin, Texas.
Adkins Janet Elizabeth
Chang Joon
Lai Ashley D.
Cheung Hubert
Dillon & Yudell LLP
International Business Machines - Corporation
Vo Tim
LandOfFree
System and method for handing input/output errors during... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for handing input/output errors during..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for handing input/output errors during... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4026409