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

[Jeff Becker]

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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>
>
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