Re: Add ssd's to hdd cluster, crush map class hdd update necessary?

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On 06/13/2018 09:01 AM, Marc Roos wrote:
Yes but I already have some sort of test cluster with data in it. I
don’t think there are commands to modify existing rules that are being
used by pools. And the default replicated_ruleset doesn’t have a class
specified. I also have an erasure code rule without any class definition
for the file system.

Yes, before migration from multi-root/classless crush to luminous+ classified crush you need to assign classified rulesets to your pools.
This is safe to apply on production clusters, on EC pools too.






k
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