disk controller failure

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Hi Cephers,

one of our OSD nodes is experiencing a Disk controller problem/failure
(frequent resetting), so the OSDs on this controller are flapping
(up/down in/out).

I will hopefully get the replacement part soon.

I have some simple questions, what are the best steps to take now before
an after replacement of the controller?

- marking down and shutting down all osds on that node?
- waiting for rebalance is finished
- replace the controller
- just restart the osds? Or redeploy them, since they still hold data?

We are running:

ceph version 12.2.7 (3ec878d1e53e1aeb47a9f619c49d9e7c0aa384d5) luminous
(stable)
CentOS 7.5

Sorry for my naive questions.

Thanks for any help
  Dietmar

-- 
_________________________________________
D i e t m a r  R i e d e r, Mag.Dr.
Innsbruck Medical University
Biocenter - Division for Bioinformatics
Innrain 80, 6020 Innsbruck
Email: dietmar.rieder@xxxxxxxxxxx
Web:   http://www.icbi.at


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