Re: automount doesn't "follow" bind mounts

From: H. Peter Anvin (
Date: Tue Aug 20 2002 - 15:58:38 EST

Followup to: <>
By author: Matt Bernstein <mb/>
In newsgroup:
> I tried to subscribe to the autofs list, but majordomo isn't replying to
> me! I think this is a problem in the automount daemon rather than the
> kernel autofs code itself.
> I'm trying to automount our home dirs as
> /homes/$USERNAME
> which should bind mount to
> which should bind mount to
> which (phew!) will be an NFS mount to
> The idea is that:
> (1) `/bin/pwd` = "/homes/$USERNAME"
> (2) when you run "quota" it'll only report for $SERVER:/$VOLUME
> Now.. this all works perfectly if before looking at /homes/$USERNAME you
> look at firstly /home/$SERVER/$VOLUME/$PATH/$USERNAME and then secondly
> /home/$SERVER/$HOMENAME/$USERNAME, because the bind mounts have something
> to bind to. Of course you shouldn't need to know the middle bits, but you
> could look them up. Currently the binds mount fail and automount drops in
> symlinks; this satisfies (2) above, but unfortunately not (1).
> I hope someone can make sense of this. Is it different in autofs4?

This is unfortunately nearly impossible to solve. It's a known bug,
but it's questionable if anything can be done about it.

For right now, autofs cannot bind-mount to a mount from the same
automount point (the problem is with the double-use of /home/$SERVER
in your case.)


<> at work, <> in private!
"Unix gives you enough rope to shoot yourself in the foot."	<>
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This archive was generated by hypermail 2b29 : Fri Aug 23 2002 - 22:00:21 EST