Please consider type datacenter as a root bucket

[andersbs]

We have some crush rules that originate on datacenter types and not root types and these are filtered at https://github.com/TheJJ/ceph-balancer/blob/master/placementoptimizer.py#L1932

[TheJJ]

Thanks - i should add that indeed. Can you create a state dump (placementoptimizer.py gather somefilename.xz) please and upload it somewhere, then send me the link to jj -at- sft.lol. I can then play around with the cluster structure locally and fix the rule take to be an arbitrary tree position.