Hi, I'm trying to test kvm-rbd, and I just failed to create image on it. I followed installation sequence on the wiki (http://ceph.newdream.net/wiki/Kvm-rbd), and executed $ qemu-img create -f rbd rbd:data/foo 10G it returned failed assigning block id qemu-img: rbd:data/foo: error while creating rbd: Input/output error Then I looked into source code, and realized maybe I need to load libcls_rbd.so, so I executed $ cclass -a $ ceph class list rbd class shows up. 10.09.29_00:55:53.939866 mon <- [class,list] 10.09.29_00:55:53.940230 mon0 -> 'installed classes: rbd (v1.2 [x86-64]) ' (0) Then I tried "qemu-img create" again, also "rbd create", it didn't work at all. Like this: $ rbd -p hoge99 --size 10 create test.img failed to assign a block name for image create error: Operation not supported $ qemu-img create -f rbd rbd:data/foo 10G Formatting 'rbd:data/foo', fmt=rbd size=10737418240 cluster_size=0 failed assigning block id qemu-img: rbd:data/foo: error while creating rbd: Input/output error osd and mon are working correctly, I can use it via rados command and librados. My question is: - Am I missing something to start using rbd? - Do I need rbd kernel module for kvm-rbd? I thought it's just a userland application, which calling librados. syuu -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
