virsh pool-define /tmp/rbd.xml
error: Failed to define pool from /tmp/rbd.xml
error: internal error: missing backend for pool type 8
rbd.xml
<pool type="rbd">
<name>cloudstack</name>
<source>
<name>cloudstack</name>
<host name='10.20.197.22' port='6789'/>
</source>
</pool>
this is my system information:
centos6.4 2.6.32-358.14.2.el6.x86_64
libvirt-1.1.1-1.el6.x86_64
qemu-img-0.12.1.2-2.355.el6.2.cuttlefish.x86_64