[ewg] Problem with NFS/RDMA on CentOS 7 with OFED-MIC-3.5-2-rc1

[Steffen Müthing]

Am 05.08.2014 um 18:56 schrieb Woodruff, Robert J <robert.j.woodruff at intel.com>:

> Although we did add backports for RHEL 7 into OFED-3.5-2-MIC, we only tested the core components, MPI, and IPoIB and not NFS/RDMA or SRP,
> so there may be issues with NFS/RMDA that will have to wait till OFED-3.12-1 to get resolved.

Thanks for the info. We’ll just stay on CentOS 6.5 for the time being.

Steffen

>  
> From: ewg-bounces at lists.openfabrics.org [mailto:ewg-bounces at lists.openfabrics.org] On Behalf Of Jeff Becker
> Sent: Tuesday, August 05, 2014 9:49 AM
> To: Steffen Müthing; Cheng, Wendy
> Cc: ewg at lists.openfabrics.org
> Subject: Re: [ewg] Problem with NFS/RDMA on CentOS 7 with OFED-MIC-3.5-2-rc1
>  
> Hello,
> 
> I do the OFED distro ports for NFSRDMA. It will be supported on CENTOS 7 in OFED 3.12.1 (coming soon). Not sure how this relates to MPSS/OFED.
> 
> -jeff
> 
> On 08/05/2014 09:07 AM, Steffen Müthing wrote:
> Hi Wendy,
>  
> thanks for the response!
>  
> Am 05.08.2014 um 18:04 schrieb Cheng, Wendy <wendy.cheng at intel.com>:
>  
> Did you mount the NFS share on MIC or on host ? Be aware that 3.3 MPSS/OFED does not support NFS/RDMA yet; that is, mounting NFS/RDMA on MIC is NOT supported at this moment.  
>  
> I’m aware of that restriction. I was just mounting a host-exported share on a different host.
>  
> Steffen
>  
>  
> -- Wendy  
>  
> -----Original Message-----
> From: ewg-bounces at lists.openfabrics.org [mailto:ewg-
> bounces at lists.openfabrics.org] On Behalf Of Steffen Müthing
> Sent: Tuesday, August 05, 2014 2:39 AM
> To: ewg at lists.openfabrics.org
> Subject: [ewg] Problem with NFS/RDMA on CentOS 7 with OFED-MIC-3.5-2-
> rc1
>  
> Hi,
>  
> I'm trying to get the new 3.3 MPSS stack to work together with OFED-MIC-
> 3.5-2-rc1 on CentOS 7, but I've run into a problem with NFS/RDMA: While I
> can mount file systems and traverse them, I cannot access any files larger
> than about 800 bytes. Trying to cat such a file results in errors like
> this:
>  
> cat: gcc.lua: Input/output error
>  
> or, when copying:
>  
> [root at node01 files]# cp test.txt /tmp
> cp: error reading 'test.txt': Input/output error
> cp: failed to extend '/tmp/test.txt': Input/output error
> [root at node01 files]#
>  
> At the same time, trying to write a file that is larger than 800 bytes to a server
> running CentOS 7 tends to freeze that server, while writing to a CentOS 6.5
> server works just fine (I just can't access the data afterwards).
>  
> On the other hand, exporting an NFS share on a CentOS 7 server and
> mounting it on a CentOS 6.5 client works without any problem.
>  
> We are using Mellanox ConnectX-3 VPI adapters (mlx_4 driver) and are
> currently running kernel version 3.10.0-123.4.4.el7.x86_64. Does someone
> have an idea of what might be going wrong here?
>  
> Thank you!
>  
> Steffen Müthing
>  
> -------------------------------------------------------------------
>  
> Steffen Müthing
> Interdisciplinary Center for Scientific Computing Heidelberg University
>  
> Im Neuenheimer Feld 368
> 69120 Heidelberg
> Germany
>  
> +49 6221 54 8888
> steffen.muething at iwr.uni-heidelberg.de
>  
>  
>  
>  
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