Method, system, and program for managing meta data in a storage system and rebuilding lost meta data in cache
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United States of America Patent
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Aug 20, 2002
Grant Date -
N/A
app pub date -
Mar 3, 1999
filing date -
Mar 3, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a method, system, and article of manufacture for processing modified meta data for data recovery operations. The meta data provides information on user data maintained in a storage device. The system determines whether meta data tracks maintained in a cache were modified and indicates in a non-volatile memory that the determined meta data tracks were modified. Data recovery operations may be initiated as a result of a system failure, such as a warmstart or coldstart recovery. During such data recovery operations, the system processes the non-volatile memory and the indications of modified meta data tracks therein to rebuild lost meta data tracks in the cache.
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