Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2004-12-31
2008-08-19
Breene, John (Department: 2162)
Data processing: database and file management or data structures
Database design
Data structure types
C714S006130
Reexamination Certificate
active
07415488
ABSTRACT:
A file system may selectively perform redundancy consistency recovery and synchronization of mirrors and may store dirty file information in a log or journal that indicates the modification of a file. A file system may update saved dirty file information to indicate successful modification of data across mirrors and may keep track of redundancy consistency recovery information on a file-by-file basis or may track the redundancy consistency of portions of files. A file system may also instruct an underlying storage system not to track data modifications, possibly selectively for each I/O request. During synchronization the file system may synchronize its log and use saved dirty file information to determine files to be synchronized. A file system may selectively use file system logging for individual data modification requests and may expose an API allowing applications to specify a redundancy consistency mechanism.
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Harmer Craig K.
Kiselev Oleg
Muth John A.
Breene John
Bullock Joshua
Kowert Robert C.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Symantec Operating Corporation
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