Hi Kevin, On Thu, 2011-01-27 at 17:48 +0800, wchen wrote: > Hi Farnum, > > I follow the instructions on wiki to create a qemu image using qemu rbd, > but failed. > > According to wiki, after compiled qemu and input the following command: > $ qemu-img create -f rbd rbd:data/foo 10G > > But system tell me that "unknown format 'rbd'". Seems you are missing RBD support in Qemu. > which step did I miss? how to register a 'rbd' format? > BTW, I run these commands on ceph cluster. Did you compile Qemu-RBD with --enable-rbd ? And are you sure you are running the correct binary and that there is no old Qemu installation on your system. Wido -- 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