Ooops. I found the problem with duplicates.. .. there were actually duplicates elsewhere, that were presenting as if they were in this section. So on the one hand, i got rid of the runtime errors. But on the other hand... this isnt actually modding the crush map for me? the "chassis: hostA" doesnt get created as a bucket all: children: osds: hosts: hostA1: osd_crush_location: host: 'hostA1' chassis: 'hostA' root: 'default' hostA2: osd_crush_location: host: 'hostA2' chassis: 'hostA' root: 'default' -- Philip Brown| Sr. Linux System Administrator | Medata, Inc. 5 Peters Canyon Rd Suite 250 Irvine CA 92606 Office 714.918.1310| Fax 714.918.1325 pbrown@medata.com| www.medata.com