[Lustre-discuss] Client behind Router can't mount with failover mgs

[Cliff White]

It sounds like your failover NIDS are not properly set up, or the clients
cannot route to those NIDS. Check syslogs on the failing clients, that
should tell you more.
cliffw


On Tue, Dec 20, 2011 at 12:42 AM, Michael Kluge <Michael.Kluge at tu-dresden.de
> wrote:

> Hi Colin,
>
> > > our mgs server (Lustre 1.6.7) failed and we mounted it on the failover
> > > node. Our clients (1.6.7) on the same IB network are still functional.
> >
> > Ok.. Well aside from the fact that 1.6.7 is long since deprecated, what
> > else isn't functional after failover?
>
> Nothing. Everything is fine. Just the 1.8.5. clients behind a IB<->10GE
> router
> can't mount anymore.
>
> > >   We have exported the fs via a Lustre/10GE router to another cluster
> > >   with a patchless 1.8.5. The router works , we can ping around and get
> > >   the usual protocol errors. But mounting the fs from the failover node
> > >   does not work on these clients. Is this expected or is this supposed
> > >   to work?
> >
> > Sorry, what are you actually trying to do here???
>
> We have a (pretty old) SDR IB based Cluster with ~700 nodes and 10 Lustre
> servers. We use an IB<->10GE router to attach this Lustre FS to another
> cluster. This works pretty well. But only, when the MGS is mounted on the
> primary node, not when the MGS is mounted on the failover node. I just
> want to
> know if this is an expected behaviour or not.
>
>
> Regards, Michael
>
> --
>
> Dr.-Ing. Michael Kluge
>
> Technische Universität Dresden
> Center for Information Services and
> High Performance Computing (ZIH)
> D-01062 Dresden
> Germany
>
> Contact:
> Willersbau, Room A 208
> Phone:  (+49) 351 463-34217
> Fax:    (+49) 351 463-37773
> e-mail: michael.kluge at tu-dresden.de
> WWW:    http://www.tu-dresden.de/zih
>
> _______________________________________________
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>
>


-- 
cliffw
Support Guy
WhamCloud, Inc.
www.whamcloud.com
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