[libvirt] [PATCH] Better error reporting in qemu AttachDevice

[Jim Meyering]

Cole Robinson wrote:
> The attached patch fixes qemu AttachDevice to show the invalid disk bus
> or type in it's error messages. This also adds an error message where
> previously we could fall through, leading virsh to print 'Unknown Error'
> if attempting to hotplug an IDE disk.

definite improvement.
ACK