Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2011-07-05
2011-07-05
Baderman, Scott T (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C005S006000, C005S042000, C005S047000
Reexamination Certificate
active
07975171
ABSTRACT:
The present invention provides a method and system for performing file recovery in a computer system coupled to a storage subsystem, wherein a data scrubbing process analyzes said storage subsystem for potential or existing storage errors. The method includes: receiving a report from said data scrubbing process describing said errors, including logical block addresses (LBAs) of storage locations containing errors; interacting with a file system created on logical unit numbers (LUN) provided by said storage subsystem in order to identify file information pertaining to the erroneous LBAs; moving the file pertaining to said erroneous LBAs to a different storage location; updating pointers to said file; in case of an unrecoverable, accessing a backup copy of said file from a backup location; if a predetermined degree of error severity is exceeded, creating an additional copy of said file; and updating the pointers to said file managed by the file system, respectively.
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Haustein Nils
Troopens Ulf
Wolafka Rainer
Baderman Scott T
International Business Machines - Corporation
Ko Chae
Truelson Roy W.
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