Kernel crash in Centos 6.6

Kernel crash in Centos 6.6

[Fedele Stabile]

Hello all,
I have a kernel crash when I mount an NFS volume using RDMA transport.
On client and server is installed Centos 6.6 kernel 2.6.32
-504.8.1.el6.x86_64
I use nfs v4
The client hangs if I execute 
mount -t nfs -o rdma ib-server:/data /data
Server and client are connected throw Infiniband network and Qlogic
adapters.

Can you help me?
Fedele Stabile

Re: Kernel crash in Centos 6.6

[Jack Wang]

2016-02-10 13:07 GMT+01:00 Fedele Stabile <fedele.stabile@fis.unical.it>:
> Hello all,
> I have a kernel crash when I mount an NFS volume using RDMA transport.
> On client and server is installed Centos 6.6 kernel 2.6.32
> -504.8.1.el6.x86_64
> I use nfs v4
> The client hangs if I execute
> mount -t nfs -o rdma ib-server:/data /data
> Server and client are connected throw Infiniband network and Qlogic
> adapters.
>
> Can you help me?
> Fedele Stabile
>

Please send out the dmesg at least.

You should try to report bug to distribution, or update to some new
stable kernel.


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Re: Kernel crash in Centos 6.6

[Chuck Lever]

Fedele-

> On Feb 10, 2016, at 7:07 AM, Fedele Stabile <fedele.stabile@fis.unical.it> wrote:
> 
> Hello all,
> I have a kernel crash when I mount an NFS volume using RDMA transport.
> On client and server is installed Centos 6.6 kernel 2.6.32
> -504.8.1.el6.x86_64
> I use nfs v4
> The client hangs if I execute 
> mount -t nfs -o rdma ib-server:/data /data
> Server and client are connected throw Infiniband network and Qlogic
> adapters.

I assume you mean that the mount command hangs, not that
the whole client deadlocks.

Add "port=20049" to the mount options.


--
Chuck Lever

Re: Kernel crash in Centos 6.6

[Chuck Lever]

> On Feb 10, 2016, at 11:21 AM, fedele.stabile <fedele.stabile@fis.unical.it> wrote:
> 
> No, the client hangs and the only way to gain control is power cycle  of client. ...

File a bug with your distributor. They should be able to
help you with triage steps.


> -------- Messaggio originale --------
> Da: Chuck Lever <chuck.lever@oracle.com>
> Data: 10/02/2016 16:28 (GMT+01:00)
> A: fedele.stabile@fis.unical.it
> Cc: Linux NFS Mailing List <linux-nfs@vger.kernel.org>
> Oggetto: Re: Kernel crash in Centos 6.6
> 
> Fedele-
> 
> > On Feb 10, 2016, at 7:07 AM, Fedele Stabile <fedele.stabile@fis.unical.it> wrote:
> > 
> > Hello all,
> > I have a kernel crash when I mount an NFS volume using RDMA transport.
> > On client and server is installed Centos 6.6 kernel 2.6.32
> > -504.8.1.el6.x86_64
> > I use nfs v4
> > The client hangs if I execute 
> > mount -t nfs -o rdma ib-server:/data /data
> > Server and client are connected throw Infiniband network and Qlogic
> > adapters.
> 
> I assume you mean that the mount command hangs, not that
> the whole client deadlocks.
> 
> Add "port=20049" to the mount options.
> 
> 
> --
> Chuck Lever
> 
> 
> 
> 
> 

--
Chuck Lever