[gpfsug-discuss] GPFS and both Samba and NFS

Adam Wead amsterdamos at gmail.com
Tue Dec 17 03:49:44 GMT 2013

Hi all,

I've been following this discussion because I use GPFS with both NFS and
Samba.  Although, now I'm a bit concerned because it sounds like this may
not be an appropriate thing to do.  It seems like the issue is the
clustered implementations of Samba and NFS, yes?  Or is this for any

I use GPFS 3,4, under RHEL5, but only on one machine.  We do not have a
cluster of GPFS systems, so it's the plain version of NFS and Samba that
comes with RedHat--no CTDB.  My one-node GPFS system exports NFS shares to
which other servers write data, as well as hosts a few Samba shares for
desktop computers.  So now I'm curious.  Is this wrong to do?  I haven't
had any problems in the three years I've had it running.

To clarify, while NFS and Samba are both writing data to the same GPFS
filesystem, they're not writing to the same files or directories.  NFS is
for server-to-server data, and Samba is for desktop clients, which is
relegated to different directories of the same file system.

Adam Wead
Systems and Digital Collections Librarian
Rock and Roll Hall of Fame and Museum
216.515.1960 (t)
215.515.1964 (f)

On Mon, Dec 16, 2013 at 3:46 PM, Jonathan Buzzard <jonathan at buzzard.me.uk>wrote:

> On 16/12/13 15:31, Sven Oehme wrote:
> [SNIP]
>> i would like to repeat that i don't write this email to encourage people
>> to all go start installing/ configuring samba on top of GPFS as i
>> pointed out that you are kind on your own unless you can read source
>> code and/or have somebody who does and is able to help as soon as you
>> run into a problem.
>> the main point of sharing this information is to clarify a lot of
>> misinformation out there and provide the people who already have setups
>> that are incorrect the information to at least not run into data
>> corruption issues do to wrong configuration.
> I meant to say that is *VERY* sound advice. Roughly speaking if you had
> not already worked out just about everything in that email and more besides
> you should not be rolling your own GPFS/Samba/CTDB solution because you
> don't know what you are doing and it will likely end in tears at some point.
> JAB.
> --
> Jonathan A. Buzzard                 Email: jonathan (at) buzzard.me.uk
> Fife, United Kingdom.
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