[gpfsug-discuss] filesets and mountpoint naming

[Sanchez, Paul]

We've been mounting all filesystems in a canonical location and bind mounting filesets into the namespace.  

One gotcha that we recently encountered though was the selection of /gpfs as the root of the canonical mount path.  (By default automountdir is set to /gpfs/automountdir, which made this seem like a good spot.)  This seems to be where gpfs expects filesystems to be mounted, since there are some hardcoded references in the gpfs.base RPM %pre script (RHEL package for GPFS) which try to nudge processes off of the filesystems before yanking the mounts during an RPM version upgrade.  This however may take an exceedingly long time, since it's doing an 'lsof +D /gpfs' which walks the filesystems.

-Paul Sanchez

-----Original Message-----
From: gpfsug-discuss-bounces at gpfsug.org [mailto:gpfsug-discuss-bounces at gpfsug.org] On Behalf Of Stuart Barkley
Sent: Tuesday, September 23, 2014 11:47 AM
To: gpfsug-discuss at gpfsug.org
Subject: [gpfsug-discuss] filesets and mountpoint naming

When we first started using GPFS we created several filesystems and just directly mounted them where seemed appropriate.  We have something like:

    /home
    /scratch
    /projects
    /reference
    /applications

We are finding the overhead of separate filesystems to be troublesome and are looking at using filesets inside fewer filesystems to accomplish our goals (we will probably keep /home separate for now).

We can put symbolic links in place to provide the same user experience, but I'm looking for suggestions as to where to mount the actual gpfs filesystems.

We have multiple compute clusters with multiple gpfs systems, one cluster has a traditional gpfs system and a separate gss system which will obviously need multiple mount points.  We also want to consider possible future cross cluster mounts.

Some thoughts are to just do filesystems as:

    /gpfs01, /gpfs02, etc.
    /mnt/gpfs01, etc
    /mnt/clustera/gpfs01, etc.

What have other people done?  Are you happy with it?  What would you do differently?

Thanks,
Stuart
--
I've never been lost; I was once bewildered for three days, but never lost!
                                        --  Daniel Boone _______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at gpfsug.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss