On 2013年02月26日 01:44, Paolo Bonzini wrote:
QEMU added -drive in 2007, and NBD in 2008. Both appeared first in release 0.10.0. Thus the code to support network disks without -drive is dead, and in fact it incorrectly escapes commas. Drop it.
The network disks support appeared in 0.8.7: Jan 4 2011 actually. commit 036ad5052b43fe9f0d197e89fd16715950408e1d Author: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Date: Mon Dec 6 16:24:09 2010 +0900 add network disk support This patch adds network disk support to libvirt/QEMU. The currently supported protocols are nbd, rbd, and sheepdog. The XML syntax is like this: <disk type="network" device="disk"> <driver name="qemu" type="raw" /> <source protocol='rbd|sheepdog|nbd' name="...some image identifier..."> <host name="mon1.example.org" port="6000"> <host name="mon2.example.org" port="6000"> <host name="mon3.example.org" port="6000"> </source> <target dev="vda" bus="virtio" /> </disk> Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> I believe -drive support is before 0.8.7, but how about libvirt is new enough with the network disk support, and qemu too old without -drive support? Osier