Samba has several options that appeared
around the time of Samba 2.0, but either were not entirely supported or were
in the process of being developed. With Samba 2.0.7, several more were
introduced. We will give you a brief overview of their workings in this
section. These options are shown in
timeout global option emulates a Windows NT SMB feature called
change notification. This allows a client to request that a Windows NT server periodically monitor a specific directory on a share for any changes. If any changes occur, the server will notify the client.
As of version 2.0, Samba will perform this function for its clients. However, performing these checks too often can slow the server down considerably. This option sets the time period that Samba should wait between such checks. The default is one minute (60 seconds); however, you can use this option to specify an alternate time that Samba should wait between performing checks:
change notify timeout = 30
timeout global option sets a retention period for NT domain machine passwords. The default is currently set to the same time period that Windows NT 4.0 uses: 604,800 seconds (one week). Samba will periodically attempt to change the
machine account password, which is a password used specifically by another server to report changes to it. This option specifies the number of seconds that Samba should wait before attempting to change that password. The following example changes it to a single day, by specifying the following:
machine password timeout = 86400
size global option sets the size of the cache entries to be used for the
cache option. The default here is 50. Again, the Samba team recommends that you never change this parameter.
If you specified
--with-utmp when configuring, this option will turn on utmp logging
of users: they will appear in the utmp file and you will be able to see if
they are on with last(1). It defaults to
utmp is set, the utmp dir option will change the directory Samba
looks in for the utmp files. If it is not set, the default system
location will be used.
This option causes new files and directories to be created with
the same permissions as the directory they're in. For example,
subdirectories will inherit setgid bits from their parents.
This option will override the
mask, directory mask, force create mode and
force directory mode options, but not the
map archive, map hidden and
options. It will never set the
This option defaults to off.
write cache size
share option sets the size of a cache used by Samba while
writing oplocked files. The files will be written in cachesize
blocks, so you can tune Samba's write size to the optimum size for
your filesystem or RAID disk array.
The caching applies to the first 10 files opened with oplocks if set,
and defaults to zero (off) initially.
As with all caching schemes, data that hasn't been written
will be lost if the system crashes.
This options specifies a file of environment variables that Samba
will read on startup. The variables set in this
files can then be used in smb.conf files as $%name. For example,
HOME=/home/sofia in the environment file could be used in a smb.conf
file as "path = "$HOME"
If the pathname begins with a "|" (pipe) symbol, Samba will attempt
to run it and read its standard output.
This option sets the minimum length, in characters,
of a plain text password that Samba will accept when performing UNIX
password changing. This is used to tell Samba about system-defined
minimums, so it can return an appropriate error to the client.
This sets the NetBIOS scope that Samba will operate under: Samba
will not communicate with any machine with a different scope.
This should not be set unless every machine on your LAN also sets
this value. It was a predecessor to workgroups, and the Samba
team recommends against using it.