[gpfsug-discuss] How to join GNR nodes to a non-GNR cluster

Marc A Kaplan makaplan at us.ibm.com
Tue Dec 3 19:14:52 GMT 2019


IF you have everything properly licensed and then you reconfigure...  It
may work okay...  But then you may come up short if you ask for IBM support
or service...
So depending how much support you need or desire...

Or take the easier and  supported path... And probably accomplish most of
what you need -- let each cluster be and remote mount onto clients which
could be on any connected cluster.



From:	Jonathan Buzzard <jonathan.buzzard at strath.ac.uk>
To:	"gpfsug-discuss at spectrumscale.org"
            <gpfsug-discuss at spectrumscale.org>
Date:	12/03/2019 10:04 AM
Subject:	[EXTERNAL] Re: [gpfsug-discuss] How to join GNR nodes to a
            non-GNR cluster
Sent by:	gpfsug-discuss-bounces at spectrumscale.org



On 03/12/2019 14:54, Olaf Weiser wrote:
> Hallo
> "merging" 2 different GPFS cluster into one .. is not possible ..
> for sure you can do "nested" mounts .. .but that's most likely not, what
> you want to do ..
>
> if you want to add a GL2 (or any other ESS) ..to an existing (other)
> cluster... -  you can't preserve ESS's RG definitions...
> you need to create the RGs after adding the IO-nodes to the existing
> cluster...
>
> so if you got a new ESS.. (no data on it) .. simply unconfigure cluster
> ..  .. add the nodes to your existing cluster.. and then start
> configuring the RGs
>

I was under the impression (from post by IBM employees on this list)
that you are not allowed to mix GNR, ESS, DSS, classical GPFS, DDN GPFS
etc. in the same cluster. Not a technical limitation but a licensing one.

JAB.

--
Jonathan A. Buzzard                         Tel: +44141-5483420
HPC System Administrator, ARCHIE-WeSt.
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG
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