[Lustre-discuss] Lustre and Automount

[David Simas]

On Thu, May 27, 2010 at 12:50:15PM -0600, Andreas Dilger wrote:
> There have been some reports of problems with automount and Lustre  
> that have never been tracked down.  If someone with automount  
> experience and config, and time to track this down could investigate  
> I'm sure we could work it out.

The autofs that comes with RHEL5 won't mount Lustre.  We got
it working with autofs-5.0.3-36, from some version of Fedora.
Later versions of autofs should also work.  The fix to autofs
is almost trivial.  A function scans the mount command to
make sure it contains just "legal" characters.  To get Lustre
to automount, it needs "@" in it's list of such.  

We did find that the automounter sometimes failed to remove
the Lustre record from /etc/mtab on unmounting the file system.
That would cause subsequent remounts to fail.  Another easy
fix: link /etc/mtab to /proc/mounts.

David S.

> 
> Cheers, Andreas
> 
> On 2010-05-27, at 12:24, David Noriega <tsk133 at my.utsa.edu> wrote:
> 
> > We are pre-Lustre right now and have some questions. Currently our  
> > cluster uses LDAP+automount to mount user's home directories from  
> > our file server.  Once we go Lustre, is there any sort of  
> > modification to LDAP or automount(besides the installation of the  
> > Lustre client programs) needed?
> >
> > -- 
> > Personally, I liked the university. They gave us money and  
> > facilities, we didn't have to produce anything! You've never been  
> > out of college! You don't know what it's like out there! I've worked  
> > in the private sector. They expect results. -Ray Ghostbusters
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