VFS_COMMIT(1M) System Administration tools VFS_COMMIT(1M)NAMEvfs_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.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────────────────────┤
│Availability │ SUNWsmbar, SUNWsmbac, SUNWsmbau │
├────────────────────┼─────────────────────────────────┤
│Interface Stability │ External │
└────────────────────┴─────────────────────────────────┘
NOTES
Source code for Samba is available in the SUNWsmbaS package.
Samba(7) delivers the set of four SMF(5) services as can be seen from
the following example:
$ svcs samba wins winbind swat
STATE STIME FMRI
disabled Apr_21 svc:/network/samba:default
disabled Apr_21 svc:/network/winbind:default
disabled Apr_21 svc:/network/wins:default
disabled Apr_21 svc:/network/swat:default
where the services are:
"samba"
runs the smbd daemon managing the CIFS sessions
"wins"
runs the nmbd daemon enabling the browsing (WINS)
"winbind"
runs the winbindd daemon making the domain idmap
"swat"
Samba Web Administration Tool is a service providing access to
browser-based Samba administration interface and on-line
documentation. The service runs on software loopback network
interface on port 901/tcp, i.e. opening "http://localhost:901/" in
browser will access the SWAT service on local machine.
Please note: SWAT uses HTTP Basic Authentication scheme where user name
and passwords are sent over the network in clear text. In the SWAT case
the user name is root. Transferring such sensitive data is advisable
only on the software loopback network interface or over secure
networks.
Samba 3.6 04/10/2012 VFS_COMMIT(1M)