Hi everyone, On my 13.2.5 cluster, I recently enabled the ceph balancer module in crush-compat mode. A couple manual 'eval' and 'execute' runs showed the score improving, so I set the following and enabled the auto balancer. mgr/balancer/crush_compat_metrics:bytes # from https://github.com/ceph/ceph/pull/20665 mgr/balancer/max_misplaced:0.01 mgr/balancer/mode:crush-compat Log messages from the mgr showed lower scores with each iteration, so I thought things were moving in the right direction. Initially my highest-utilized OSD was at 79% and MAXVAR was 1.17. I let the balancer do its thing for 5 days, at which point my highest utilized OSD was just over 90% and MAXVAR was about 1.28. I do have pretty low PG-per-OSD counts (average of about 60 - that's next on my list), but I explicitly asked the balancer to use the bytes metric. Was I just being impatient? Is it expected that usage would go up overall for a time before starting to trend downward? Is my low PG count affecting this somehow? I would have expected things to move in the opposite direction pretty quickly as they do with 'ceph osd reweight-by-utilization'. Thoughts? Regards, Josh _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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