On 2/26/20 3:40 AM, shubjero wrote:
I'm running a Ceph Mimic cluster 13.2.6 and we use the ceph-balancer in upmap mode. This cluster is fairly old and pre-Mimic we used to set osd reweights to balance the standard deviation of the cluster. Since moving to Mimic about 9 months ago I enabled the ceph-balancer with upmap mode and let it do its thing but I did not think about setting the previously modified reweights back to 1.00000 (not sure if this is fine or would have been a best practice?) Does the ceph-balancer in upmap mode manage the osd reweight dynamically? Just wondering if I need to proactively go back and set all non 1.00000 reweights to 1.00000.
Balancer in upmap mode should always work on not reweighed (e.g. 1.0000) OSD's.
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