[Lustre-discuss] problem with clients and multiple transports

[David Dillow]

On Wed, 2011-11-02 at 08:55 -0700, John White wrote:
> Hello Folks,
> 	I'm having a problem pinning a given FS to a given transport type.  I
> have 2 file systems hosted on the OSS/MDS side by an ib and tcp nid
> (each) being mounted by a client specifying the appropriate transport
> for each of the file systems (one over tcp and one over o2ib).  I can
> not mount o2ib.  Period.  If my client's modprobe.conf lists o2ib
> before the tcp nid, any o2ib mount request fails.  If the
> modprobe.conf has tcp first, both mount requests will mount via tcp0,
> no matter how the mount request is crafted.  

Were both tcp and o2ib LNETs present when you built the filesystem? If
not, try performing a 'tunefs.lustre --writeconf ...' on each of the
servers with LNET started but the servers unmounted.
-- 
Dave Dillow
National Center for Computational Science
Oak Ridge National Laboratory
(865) 241-6602 office