Data processing: database and file management or data structures – Data integrity – Policy – rule-based management of records – files – and documents
Reexamination Certificate
2006-05-23
2011-11-15
Lewis, Alicia (Department: 2164)
Data processing: database and file management or data structures
Data integrity
Policy, rule-based management of records, files, and documents
C707S822000, C707S830000, C711S154000, C711S161000, C711S170000
Reexamination Certificate
active
08060481
ABSTRACT:
A method and mechanism for managing a time-indexed block map in a file system configured to store multiple versions of file data. A file system includes inodes or other structures corresponding to files in the system. Responsive to creating a file, one or more blocks are allocated for use in storing the file data. A block map is maintained for the file and is updated to include an identification of the blocks storing the file data and a timestamp corresponding to the stored data. In response to creating a file, data corresponding block map is maintained. In addition, a new entry is created in the block map which identifies the newly allocated blocks. Further, an entry of the block map is updated to (i) identify the particular blocks to which the write was directed and (ii) include a timestamp corresponding to the time of the write.
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Bhanjois Bhimsen
Borate Milind
Colgrove John A.
Harmer Craig K.
Vajgel Peter
Lewis Alicia
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Rankin Rory D.
Symantec Operating Corporation
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