1VFS_COMMIT(8)             System Administration tools            VFS_COMMIT(8)
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NAME

6       vfs_commit - flush dirty data at specified intervals
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SYNOPSIS

9       vfs objects = commit
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DESCRIPTION

12       This VFS module is part of the samba(7) suite.
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14       The vfs_commit VFS module keeps track of the amount of data written to
15       a file and synchronizes it to disk when a specified amount accumulates.
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17       vfs_commit is useful in two circumstances. First, if you have very
18       precious data, the impact of unexpected power loss can be minimized by
19       a small commit:dthresh value. Secondly, write performance can be
20       improved on some systems by flushing file data early and at regular
21       intervals.
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23       This module is stackable.
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OPTIONS

26       commit:dthresh = BYTES
27           Synchronize file data each time the specified number of bytes has
28           been written.
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30           The following suffixes may be applied to BYTES:
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32           ·   K - BYTES is a number of kilobytes
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34           ·   M - BYTES is a number of megabytes
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36           ·   G - BYTES is a number of gigabytes
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EXAMPLES

40       Synchronize the file data on the [precious] share after every 512
41       kilobytes (524288 bytes) of data is written:
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43                   [precious]
44                path = /data/precious
45                vfs objects = commit
46                commit:dthresh = 512K
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CAVEATS

49       On some systems, the data synchronization performed by commit may
50       reduce performance.
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VERSION

53       This man page is correct for version 3.0.25 of the Samba suite.
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AUTHOR

56       The original Samba software and related utilities were created by
57       Andrew Tridgell. Samba is now developed by the Samba Team as an Open
58       Source project similar to the way the Linux kernel is developed.
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62Samba 3.5                         08/02/2011                     VFS_COMMIT(8)