Hallo,I am using 12.2.4 and started using "ceph balancer". Indeed it does a great job, thanks!
I have few comments: - in the documentation http://docs.ceph.com/docs/master/mgr/balancer/ I think there is an error, since ceph config set mgr mgr/balancer/max_misplaced .07 should be replaced by ceph config-key set mgr/balancer/max_misplaced 0.07 - when running in automatic mode, I observed that althought I set max_misplaced to 1%, sometimes the fraction of misplaced PGs goes slightly above (up to 1.5% or so): probably because a new round of optimization takes place as soon as there are no degraded objects but there may still be some misplaced objects around? Not a big deal, though, just need to remember to set max_misplaced to a bit lower value. - do you think it would make sense to be able to optionally restrict balancer to run only on a given device-class? I have defined a custom device class "big" which I use for EC-backed pools, and would like to selectively include/exclude those units in/from the optimization process. Thanks a lot! Fulvio
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