vfs_commit

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:

K - BYTES is a number of kilobytes
M - BYTES is a number of megabytes
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.