[gpfsug-discuss] [EXTERNAL] Upgrade Scale from 5.1.2-8 to 5.2.0-1

[Peter Childs]

Last I checked 5.1.9 did not support 9.4 and only 5.2.0-1 worked. IBM do like breaking the gplbin when they push out a new version of RHEL, Hopefully it will get better now IBM and Redhat are the same company, but who knows.

A Full Support matrix would be helpful on this one please rather than just a note in an FAQ.

I'm fairly sure 5.1.9 has the same issue with the same bug anyway. Anyway 5.2.0-1 should mean we get all the latest features, which is good.

I'm tempted to agree that the statement in the docs that says...

"In multicluster environments, it is recommended to upgrade the home cluster before the cache cluster especially if file audit logging, watch folder, clustered watch, and AFM functions are being used."

Agrees with you. And suggest that upgrading the NSD Servers early is a good idea, but that statement is a little misleading given the term "Cache" with "Multicluster" has no meaning, and it might be better to use the word "Remote"

However upgrading the servers is always the most risky step given our ESS Servers have a memory leak from the last time we upgraded them that as yet Nvidia have not said is fixed. (But might or might not be better (or worse)) (Yes the leak was tracked down to MOFED)




Peter Childs




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From: gpfsug-discuss <gpfsug-discuss-bounces at gpfsug.org> on behalf of Bolinches, Luis (WorldQuant) <Luis.Bolinches at worldquant.com>
Sent: 08 August 2024 11:39 AM
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Subject: Re: [gpfsug-discuss] [EXTERNAL] Upgrade Scale from 5.1.2-8 to 5.2.0-1

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Hi

Have you gave a though to jump to TLS 5.1.9? instead of  PTF0 of a new release 5.2?

Seems that you are valuing stability over bleeding edge features and that is supposedly what TLSs are for. Few PFTs on the 5.1.9 already, without knowing the exact issue that you are hitting, worth the try.

I would go first with quorum, fs mgr, nsd servers, gateways order but is like vi emacs question

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Luis Bolinches
WQ Aligned Infrastructure
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-----Original Message-----
From: gpfsug-discuss <gpfsug-discuss-bounces at gpfsug.org> On Behalf Of Peter Childs
Sent: Thursday, 8 August 2024 13.23
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: [EXTERNAL] [gpfsug-discuss] Upgrade Scale from 5.1.2-8 to 5.2.0-1

We are attempting to upgrade out Scale cluster which is currently running 5.1.2-8 a rather old LTS version of scale..... To 5.2.0-1 so we can upgrade from a rather old OS. (Otherwise known as CentOS7)

We have an issue where by the freshly deployed nodes with 5.2.0-1 Scale is Crashing and it looks to be caused by a bug fix since 5.1.2-8 (I suspect its the one for hc_flash_7100841_00132_notok which is in 5.1.2-15 I think)

Assuming once we've upgraded everything our cluster(s) will be stable again, I'm trying to work out how to upgrade everything without causing everything to be worse before it gets better. ie we want an upgrade to fix stuff rather than breaking it before it works.

I'm trying to work out when to upgrade our NSD Servers, if we need to do them ASAP to improve the new servers running 5.2.0-1 or if we ought to leave them till last to not cause critical kit to be unstable.

I'm also trying to work out if its worth the effort of upgrading the old nodes at all, as that's quite a bit of extra work.... and if 5.2.0-1 was stable I would not be looking at upgrading them at all.

If anyone has worked out a good order to upgrade a scale cluster then that might help ie is it best to upgrade Quorum and NSD servers early or late within any upgrade cycle, or leave them till last.

Thanks

Peter Childs
ITS Research Storage
Queen Mary University of London.



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