[gpfsug-discuss] CES nodes mount nfsv3 not responding

[laurence at qsplace.co.uk]

Hi Matt, 

The only time I've seen strace "crash" ganesha is when having selinux
enabled which ofc was related to selinux. 

Have you also changed NFS's logging level (also in the link given)? 

Check the current level with: 

mmnfs configuration list | grep LOG_LEVEL

I find INFO or DEBUG enough to get just that little extra nugget of
information you need, however if that's already at FULL_DEBUG and your
still not finding anything helpful it might be time to log a PMR. 

--Lauz 

On 2017-01-04 01:29, Matt Weil wrote: 

> On 1/3/17 4:40 PM, Laurence Horrocks-Barlow wrote: 
> 
>> Andrew,
>> 
>> You may have been stung by:
>> 
>> 2.34 What considerations are there when running on SELinux?
>> 
>> https://www.ibm.com/support/knowledgecenter/en/STXKQY/gpfsclustersfaq.html?view=kc#selinux [1]
> se is disabled here.
> Also if you strace the parent ganesha.nfsd process it dies. Is that a bug?
> 
>> I've see this issue on a customer site myself.
>> 
>> Matt,
>> 
>> Could you increase the logging verbosity and check the logs further? As per 
>> http://www.ibm.com/support/knowledgecenter/STXKQY_4.1.1/com.ibm.spectrum.scale.v4r11.pdg.doc/bl1pdg_CESNFSserverlog.htm [2]
> yes bumped it to the max of 3 not much help.
> 
> -- Lauz
> 
> On 3 January 2017 22:19:20 GMT+00:00, Andrew Beattie <abeattie at au1.ibm.com> wrote: 
> 
> Matt 
> 
> What Operating system are you running? 
> 
> I have an open PMR at present with something very similar 
> when ever we publish an NFS export via the protocol nodes the nfs service stops, although we have no issues publishing SMB exports. 
> 
> I"m waiting on some testing by the customer but L3 support have indicated that they think there is a bug in the SElinux code, which is causing this issue, and have suggested that we disable SElinux and try again. 
> 
> My clients environment is currently deployed on Centos 7. 
> 
> Andrew Beattie 
> Software Defined Storage - IT Specialist 
> 
> Phone: 614-2133-7927 
> E-mail: abeattie at au1.ibm.com 
> 
> ----- Original message -----
> From: Matt Weil <mweil at wustl.edu>
> Sent by: gpfsug-discuss-bounces at spectrumscale.org
> To: <gpfsug-discuss at spectrumscale.org>
> Cc:
> Subject: [gpfsug-discuss] CES nodes mount nfsv3 not responding
> Date: Wed, Jan 4, 2017 6:27 AM
> 
> this follows the IP what ever node the ip lands on. the ganesha.nfsd
> process seems to stop working. any ideas? there is nothing helpful in
> the logs.
> 
> time mount ces200:/vol/aggr14/temp403 /mnt/test
> mount.nfs: mount system call failed
> 
> real 1m0.000s
> user 0m0.000s
> sys 0m0.010s
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> gpfsug-discuss mailing list
> gpfsug-discuss at spectrumscale.org
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-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity. 

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Links:
------
[1]
https://www.ibm.com/support/knowledgecenter/en/STXKQY/gpfsclustersfaq.html?view=kc#selinux
[2]
http://www.ibm.com/support/knowledgecenter/STXKQY_4.1.1/com.ibm.spectrum.scale.v4r11.pdg.doc/bl1pdg_CESNFSserverlog.htm
[3] http://gpfsug.org/mailman/listinfo/gpfsug-discuss
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