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man pages section 8: System Administration Commands

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Updated: Thursday, June 13, 2019
 
 

vfs_commit (8)

Name

vfs_commit - flush dirty data at specified intervals

Synopsis

vfs objects = commit

Description

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 part of version 4.9.3 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.



ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+-----------------------+
       |ATTRIBUTE TYPE |   ATTRIBUTE VALUE     |
       +---------------+-----------------------+
       |Availability   | service/network/samba |
       +---------------+-----------------------+
       |Stability      | Volatile              |
       +---------------+-----------------------+
NOTES
       This software was built from source available at
       https://github.com/oracle/solaris-userland.  The original community
       source was downloaded from
       https://download.samba.org/pub/samba/stable/samba-4.9.3.tar.gz

       Further information about this software can be found on the open source
       community website at http://www.samba.org/.



Samba 4.9.3                       01/24/2019                     VFS_COMMIT(8)