Hallo Dan,
I am also running a productive 14.2.22 Cluster with 144 HDD-OSDs and I
am thinking if I should stay with this release or upgrade to octopus. So
your info is very valuable...
One more question: You described that OSDs do an expected fsck and that
this took roughly 10min. I guess the fsck is done in parallel for all
OSDs of one host? So the total down-time for one host regarding fsck
should not be much more than say 15min, isn't it?
Are you using SSDs or HDDs in your cluster?
Thanks
Rainer
Am 21.09.21 um 12:09 schrieb Dan van der Ster:
Dear friends,
This morning we upgraded our pre-prod cluster from 14.2.22 to 15.2.14,
successfully, following the procedure at
https://docs.ceph.com/en/latest/releases/octopus/#upgrading-from-mimic-or-nautilus
It's a 400TB cluster which is 10% used with 72 osds (block=hdd,
block.db=ssd) and 40M objects.
* The mons upgraded cleanly as expected.
* One minor surprise was that the mgrs respawned themselves moments
after the leader restarted into octopus:
--
Rainer Krienke, Uni Koblenz, Rechenzentrum, A22, Universitaetsstrasse 1
56070 Koblenz, Web: http://www.uni-koblenz.de/~krienke, Tel: +49261287 1312
PGP: http://www.uni-koblenz.de/~krienke/mypgp.html, Fax: +49261287
1001312
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