Safe to move misplaced hosts between failure domains in the crush tree?

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Hi

We have 3 servers for replica 3 with failure domain datacenter:

-1 4437.29248 root default -33 1467.84814 datacenter 714 -69 69.86389 host ceph-flash1 -34 1511.25378 datacenter HX1 -73 69.86389 host ceph-flash2 -36 1458.19067 datacenter UXH -77 69.86389 host ceph-flash3

We made a mistake when we moved the servers physically so while the replica 3 is intact the crush tree is not accurate.

If we just remedy the situation with "ceph osd crush move ceph-flashX datacenter=Y" we will just end up with a lot of misplaced data and some churn, right? Or will the affected pool go degraded/unavailable?

Mvh.

Torkil
--
Torkil Svensgaard
Sysadmin
MR-Forskningssektionen, afs. 714
DRCMR, Danish Research Centre for Magnetic Resonance
Hvidovre Hospital
Kettegård Allé 30
DK-2650 Hvidovre
Denmark
Tel: +45 386 22828
E-mail: torkil@xxxxxxxx
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