autofs for /home/<u>/<username> scheme

Meson · 07-25-2013, 01:47 AM

I'm trying to set up autofs for nfs home dirs. The scheme is /home/<u>/<username>. The only way I can figure out how to do this is with a file for every letter of the alphabet.

Code:

#auto.master
/home/a  /etc/auto.home-a
/home/b  /etc/auto.home-b
/home/c  /etc/auto.home-c

Code:

#auto.home-a
* -fstype=nfs4 server:/a/&

Surely there is a way to do this with only auto.master and auto.home (2 files). However, the wildcard doesn't seem to match anything more than a single directory.

What am I missing?

Z038 · 07-26-2013, 12:16 AM

I wonder if something like this would work? I haven't tried it.

Code:

#auto.master
/home    /etc/auto.home

Code:

#auto.home
*     -fstype=autofs,-Dsubdir=&   /etc/auto.subdir

Code:

#auto.subdir
*     -fstype=nfs4   server:/${subdir}/&

Meson · 07-26-2013, 07:14 AM

Nice idea. It didn't work, but it is a different direction to play around with. Thanks!

Z038 · 07-26-2013, 10:39 AM

You might also try playing with executable maps. If you mark a map file executable, it can be a shell script or a binary. The big problem is that the only value passed to an executable map as an argument is the key value, and that's not enough information if you're trying to cover all the possible mount points and exports with two or three maps. You'd still need to have access to a variable like $subdir to identify the subdirectory under /home.

Meson · 07-29-2013, 11:19 PM

The problem with executable maps is that they receive the "key" which is only a single directory, ie doesn't contain slashes. And the key is coming up as the highest level directory -- "u" -- not the lowest level -- "user".

In the meantime I have an auto.master with 26 lines (a-z) and 26 auto.home-'s (a-z).