Description of problem: The default OSD class directory is set to /usr/lib/rados-classes, but the RPM build installs the plugins in /usr/lib64/rados-classes on my archs. This means that OSD lacks any ability to use RBD. As a temporary hack I can override it with this in ceph.conf: [osd] osd class dir = /usr/lib64/rados-classes but the out of the box config ought to be fixed. Version-Release number of selected component (if applicable): ceph-0.31-4.fc17.x86_64 (also affects f16) How reproducible: Only on 64-bit hosts with /usr/lib64 Steps to Reproduce: 1. Setup a Ceph cluster 2. Attempt to create a RBD image # rbd create demo2 --size 10 3. Actual results: 2011-10-12 13:45:38.657797 7f0b9add9740 librbd: failed to assign a block name for image create error: Input/output error Expected results: No errors Additional info:
Upstream has a fix for it here https://github.com/NewDreamNetwork/ceph/commit/7e5dee907a8218647a88d1c7d3316cc277e1c44b
b/c upstream has a fix for it (and it appears that fix is in 0.37 - a simple version upgrade should fix.