2013-02-19 23:05:34

by Mark Lehrer

[permalink] [raw]
Subject: RDMA, el6, kernel panic


I have an easily-reproduceable kernel panic with RDMA on el6,
kernel version 2.6.32-279.19.1.el6.x86_64

If a client has an NFS filesystem mounted via RDMA, and the Infiniband
connection goes away on the client without disconnecting from the NFS
server, the NFS server gives a kernel panic.

Is this a known problem, or should I email the panic output to this
list? If it is an unknown problem, I will try on a more recent kernel
too.

Thanks,
Mark


2013-02-20 16:29:11

by Chuck Lever III

[permalink] [raw]
Subject: Re: RDMA, el6, kernel panic


On Feb 19, 2013, at 6:05 PM, Mark Lehrer <[email protected]> wrote:

>
> I have an easily-reproduceable kernel panic with RDMA on el6,
> kernel version 2.6.32-279.19.1.el6.x86_64
>
> If a client has an NFS filesystem mounted via RDMA, and the Infiniband
> connection goes away on the client without disconnecting from the NFS
> server, the NFS server gives a kernel panic.
>
> Is this a known problem, or should I email the panic output to this
> list? If it is an unknown problem, I will try on a more recent kernel
> too.

The usual process for seeking help with Enterprise kernels is to contact your distributor and open a bug.

If you want to reproduce with a current upstream kernel (like 3.7), then we are more likely to be able to help. However, it's possible your distributor has added IB drivers to their el6 kernel that are not available upstream.

--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com