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

[Steffen Müthing]

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
>> 
>> 
>> 
>> 
>> _______________________________________________
>> ewg mailing list
>> ewg at lists.openfabrics.org
>> http://lists.openfabrics.org/mailman/listinfo/ewg
> 

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