Hi all, I have a case where I want to set options for a set of HDDs under a common sub-tree with root A. I have also HDDs in another disjoint sub-tree with root B. Therefore, I would like to do something like ceph config set osd/class:hdd,datacenter:A option value The above does not give a syntax error, but I'm also not sure it does the right thing. Does the above mean "class:hdd and datacenter:A" or does it mean "for OSDs with device class 'hdd,datacenter:A'"? Thanks and best regards, ================= Frank Schilder AIT Risø Campus Bygning 109, rum S14