Re: Upgrade thoughts: 8.3 -> 9.1 -> 9.3

John,
Did you have a look at fastpath?
https://whyistheinternetbroken.wordpress.com/2018/02/16/ipfastpath-ontap92/
It seems every time we put in a case for upgrades to 9.3 netapp support
tries to make sure we looked into this! So it must've bitten a lot of folks.

We did run into a pretty big bug on the upgrade from 9.1 to 9.3P15 -- we
have a case/core in now. I've seen nfs stop serving from a node in at least
3 clusters roughly a 2-5 hours after the upgrade. We fix it by indicating
the unresponsive node and either powering it down, or via NMI/SP. It will
not respond to normal takeover commands. Preliminary core analysis (no full
core analysis yet) points at at least 1 bug fixed in 9.3P17.

https://mysupport.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=1236722


Typically when we roll updates it can take months given the number of nodes
and clusters. So we stick with whatever P patch we rolled on the first set
of nodes, and then by the end of upgrades 1-3 P patches are released.

With this experience, always use the latest P patch possible on the
intermediary update especially if you are going to take a bit to roll it
through your entire deployment. I also recommend taking a look at going to
9.5, it sounds nuts, but we've had better stability with this release. We
move to this release because of a specific feature that was needed
(CIFS/SMB enhancements, and flexcache/flexgroups).

Regards,
Douglas


On Tue, Mar 3, 2020 at 4:41 PM John Stoffel <[email protected]> wrote:

>
> Guys,
>
> We're getting ready to ugprade our 4 node 8060 cluster from 8.3.2P9 to
> 9.1P19 and then onto 9.3P17, all this weekend.  My only real concern
> is the upgrade from 9.1 to 9.3, which lists a major warning for bug
> 1250500:
>
>   Expired truststore security certificates causing upgrade and
>   new installation failures.
>
> Unfortunately, I can't run an upgrade advisor report for my cluster
> going from 9.1P19 to 9.3P17, because I'm not yet running 9.1, and it
> can take upto a week for the autosupport data to get pushed to Upgrade
> Advisor.  Sigh...
>
> Has anyone run into this issue when doing the 9.1 -> 9.3 upgrade with
> the expired certificate?  Otherwise, it all looks good, my cluster
> switches are supported at their current version, etc.
>
> John
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