Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2005-10-27
2011-10-04
Zhen, Li (Department: 2197)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C702S187000, C717S126000
Reexamination Certificate
active
08032790
ABSTRACT:
A method and computer program product for testing a system logger. Randomized input is provided into a logging facility and automated testing of the logging facility is performed in a multi-processing environment. Self-verification of data retrieved from the logging facility is performed to ensure no data loss occurs due to external system events or failures driven by a test tool. Real-time analysis of results received is performed by the test tool based on the randomized input into the logging facility. First failure data is captured and self-verification of results of a data recovery operation of the logging facility is performed in a disaster recovery scenario. Self-verification includes writing log blocks of random sizes to the log stream, iteratively forcing log data to be offloaded from primary storage to secondary storage, iteratively updating log stream attributes, and iteratively swapping duplexing modes.
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Chopra Tarun
Jones Nicholas R.
Miller, Jr. Robert
Rankin Thomas F.
Sica Andrew M.
Cantor & Colburn LLP
International Business Machines - Corporation
Kinnaman, Jr. William A.
Kretzmer Erika
Zhen Li
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