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VFS_COMMIT(8)             System Administration tools            VFS_COMMIT(8)

NAME
       vfs_commit - flush dirty data at specified intervals

SYNOPSIS
       vfs objects = commit

DESCRIPTION
       This VFS module is part of the samba(7) suite.

       The vfs_commit VFS module keeps track of the amount of data written to
       a file and synchronizes it to disk when a specified amount accumulates.

       vfs_commit is useful in two circumstances. First, if you have very
       precious data, the impact of unexpected power loss can be minimized by
       a small commit:dthresh value. Secondly, write performance can be
       improved on some systems by flushing file data early and at regular
       intervals.

       This module is stackable.

OPTIONS
       commit:dthresh = BYTES
           Synchronize file data each time the specified number of bytes has
           been written.

           The following suffixes may be applied to BYTES:

           o   K - BYTES is a number of kilobytes

           o   M - BYTES is a number of megabytes

           o   G - BYTES is a number of gigabytes

EXAMPLES
       Synchronize the file data on the [precious] share after every 512
       kilobytes (524288 bytes) of data is written:

                   [precious]
                path = /data/precious
                vfs objects = commit
                commit:dthresh = 512K

CAVEATS
       On some systems, the data synchronization performed by commit may
       reduce performance.

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

AUTHOR
       The original Samba software and related utilities were created by
       Andrew Tridgell. Samba is now developed by the Samba Team as an Open
       Source project similar to the way the Linux kernel is developed.

Samba 4.2                         12/10/2015                     VFS_COMMIT(8)