[gpfsug-discuss] weird issue when issuing mm commands

[mark.bergman at uphs.upenn.edu]

In the message dated: Tue, 12 Jan 2016 11:24:18 -0800,
The pithy ruminations from Yuri L Volobuev on 
<Re: [gpfsug-discuss] weird issue when issuing mm commands> were:
=> 
=> GPFS code determines the current OS by looking at the output of "uname -s".
=> On a regular Linux node, this command returns "Linux", so check whether you

I saw the same issue on several Scientific Linux release 6.7 machines last
week.

These machines have been GPFS clients since ~ SL 6.3 & GPFS 3.5.9
(~3 years).  This error never happened previously.

Various 'mm*' commands were returning the "Unknown OS" error. Note that
there was no OS named at the end of the error message, as if $osName
was not defined in /usr/lpp/mmfs/bin/mmglobfuncs.

The 'uname -s' command on these nodes does return "Linux" both locally
and remotely via an ssh connection from a GPFS manager node.

Updating OS distribution packages & rebooting the nodes & rebuilding the
kernel-specific gpfs.gplbin packge resolved the problem, so I'm not sure
of the exact cause.

Mark

=> see the same, when the command is run locally on the node and through an
=> ssh session.  Since mmaddnode has to do some remote processing, make sure
=> ssh works as expected, in particular in the locale setting area.
=> 
=> yuri
=> 
=> 
=> 
=> From:	Damir Krstic <damir.krstic at gmail.com>
=> To:	gpfsug-discuss at spectrumscale.org,
=> Date:	01/12/2016 06:16 AM
=> Subject:	[gpfsug-discuss] weird issue when issuing mm commands
=> Sent by:	gpfsug-discuss-bounces at spectrumscale.org
=> 
=> 
=> 
=> I have just deployed a GPU node in our HPC environment and I am having
=> couple of weird issues when trying to add it to our GPFS cluster. mmaddnode
=> command from NSD server returns with: unknown os
=> 
=> mmgetstate on the node itself returns with unknown os
=> 
=> I think I've traced it down to locale issue but reinstalling glibc-common
=> and making sure that /etc/sysconfig/i18n files are in place and OK does not
=> seem to fix the issue. This is on RedHat 6.6
=> 
=> Any help is appreciated.
=> 
=> Thanks,
=> Damir_______________________________________________
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=> 
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