[gpfsug-discuss] Running gpfs.snap outside of problems

[Jan-Frode Myklebust]

There's a manual for it now.. and it points out "The tool impacts
performance.." Also it has caused mmfsd crashes for me earlier, so I've
learned to be weary of running it..

The manual also says it's collecting using mmfsadm, and the mmfsadm manual
warns that it might cause GPFS to fail ("in certain rare cases").

I wouldn't dare running it every few hours.



-jf
tor. 9. mar. 2017 kl. 17.12 skrev Sobey, Richard A <r.sobey at imperial.ac.uk>:

> Hi all,
>
>
>
> Is there any best practice as to when to run a gpfs.snap, and the impact
> it will have on a healthy cluster? Some of my colleagues are keen to gather
> a snap for example every 2 hours to assist in problem determination.
>
>
>
> I can elaborate on the “why” part of this if needed but I’m not fully
> convinced it would help. Said I’d look into it though so I’m asking the
> question.
>
>
>
> Cheers
>
> Richard
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