On 01/29/2018 03:38 PM, Niklas wrote:
When adding new OSDs to a host, the CRUSH weight for the datacenter one level up is changed to reflect the change. What configuration is used to stop ceph from automatic weight management on the levels above the host?
In your case (datacenters) you might want to change the 'alg' to uniform instead of straw(2).
This 'alg' doesn't support weights, but if all your DCs are always equal you can use that.
Source: http://docs.ceph.com/docs/master/rados/operations/crush-map-edits/#crush-map-bucket-hierarchy
Wido
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