Samba and NFS server on same system using same filesystems

Ron Short short at
Thu Dec 8 16:20:59 UTC 2016

This would be installed on a RHEL 6.7/8 system.  As far as I know, it's 
usage would be to provide the data to a 52 node cluster via NFS AND 
serve the XFS filesystem as Samba shares to the ~60 Windows workstations.

Little is known about the actual applications/data to be used, but 
likely input files to simulation runs, output files and misc "stuff".  
Expect that a subset of the compute nodes would be processing the data 
via NFS and the Windows workstations via Samba would be used for pre and 
post processing of the results.

On 12/8/2016 10:11, Volker Lendecke wrote:
> On Thu, Dec 08, 2016 at 09:39:48AM -0600, Ron Short wrote:
>> What issues might one run into having both a NFS server and a Samba
>> configuration running on the same system serving out the same filesystem(s)?
> It should work fine as long as you don't actually have interoperating
> applications that require any form of interoperable locking.
> For example samba hands out oplocks, nfsv4 I believe calls them
> delegations. When a SMB client has an oplock, and an NFS client wants
> that file, the NFS server must somehow trigger samba to release the
> oplock. This is done on Linux with kernel oplocks. Similar issues
> arise with share modes vs share reservations.
> In general, if you don't have applications that actually compete on
> the same file space, you should be fine. But if you do, we need to
> talk :-)
> Your mail address is Is this IRIX, or Linux, or something
> else? Just curious...
> Volker

Ron Short                                       email: short at
Solutions Architect                             office: 651/683-7542
SGI Global Professional Services                fax: 651/683-5276

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