[gpfsug-discuss] cross-cluster mounting different versions of gpfs

[Konstantin Arnold]

It's definitely doable, besides --version mentioned byJan-Frode, just a
two things to consider (when cluster started as 3.5 or earlier version)
we stumbled across:
- keys nistCompliance=SP800-131A: we had to regenerate and exchange new
keys with nistCompliance before old cluster could talk to new remotecluster
- maxblocksize: you would want ESS to run with maxblocksize 16M -
cluster with 3.5 probably has set a smaller value (default 1M) and to
change that you have to stop GPFS

Best
Konstantin



On 03/15/2016 10:50 PM, Jan-Frode Myklebust wrote:
> Not sure about cluster features, but at minimum you'll need to create
> the filesystem with low enough mmcrfs --version string.
> 
> 
> 
> 
> -jf
> 
> tir. 15. mar. 2016 kl. 21.32 skrev Damir Krstic <damir.krstic at gmail.com
> <mailto:damir.krstic at gmail.com>>:
> 
>     We are deploying ESS with Spectrum Scale 4.2. Our compute cluster is
>     running GPFS 3.5. We will remote cluster mount ESS to our compute
>     cluster. When looking at GPFS coexistance documents, it is not clear
>     whether GPFS 3.5 cluster can remote mount GPFS 4.2. Does anyone know
>     if there are any issues in remote mounting GPFS 4.2 cluster on 3.5
>     cluster?
> 
>     Thanks,
>     Damir
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> 
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Konstantin Arnold | University of Basel & SIB
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Email: konstantin.arnold at unibas.ch