Coherent film system access during defragmentation operations on a storage medium
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United States of America Patent
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-
Jun 2, 1998
Issued Date -
N/A
app pub date -
Aug 28, 1997
filing date -
Aug 23, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A file defragmentation utility for a computer system is disclosed that enables multithreaded preemptive multi-tasking during file defragmentation. The utility includes a defragmentor routine that defragments clusters or portions of a file on a storage media and then updates one or more file system structures to indicate the new locations of the defragmented clusters of the file. An alias driver is provided that traps accesses to the file and that maintains coherent access to the file while the file system structures are updated.
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