Autofs howto
Michel Talon
talon at lpthe.jussieu.fr
Thu May 7 03:55:27 UTC 2009
Paul Schmehl wrote:
> I'm wondering if I can use autofs on FreeBSD. Last time I asked the
> question someone said I need amd, which I found rather cryptic.
Indeed it is cryptic, let me gave an example which works:
niobe% cat /etc/amd.conf
[global]
auto_dir = /.amd
log_file = /var/log/amd.log
log_options = error,fatal,user
map_type = file
search_path = /etc
[/Cd]
map_name = amd.cdrom
# For nfs mounts
[/Net]
map_name = amd.net
niobe% cat /etc/amd.cdrom
cdrom type:=cdfs;opts:=ro,nosuid;dev:=/dev/acd0;fs:=${autodir}/cdrom
niobe% cat /etc/amd.net
/defaults type:=host;fs:=${autodir}/${rhost};rhost:=${key}
* opts:=rw,grpid,resvport,nosuid,nodev,soft
Now some comments. I use amd without options so it just uses
/etc/amd.conf to configure itself. When you try to access /Cd
it uses the configuration in /etc/amd.cdrom, and if you try to access
/Net it uses the configuration in /etc/amd.net.
Finally if you try to access /Net/ada for example, the key is ada, and
so is the remote host. It is queried for NFS mounts and everything is
mounted. After
niobe% cd /Net/ada
i have:
niobe% df
...
ada:/ada 36196652 26972064 7356232 79% /.amd/ada/ada
ada:/ada1 287391356 246682696 26109996 90% /.amd/ada/ada1
ada:/ada2 288362876 180649856 93064956 66% /.amd/ada/ada2
ada:/ada3 99188500 80794628 13273960 86% /.amd/ada/ada3
ada:/adm 36204684 1682772 32653156 5% /.amd/ada/adm
Note that autodir is /.amd and fs is ${autodir}/${rhost} as you can
see.
Getting out of /Net/ada those mounts are unmounted.
I hope this helps explaining some of the mysteries of amd.
--
Michel TALON
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