Comment 0 for bug 1106421

If https://review.openstack.org/#/c/20161/ is merged, a new feature is added to nova:

This allows for an image in glance to be annotated with a
property describing the desired disk / cdrom bus type.

eg

# glance image-update \
--property disk_bus=ide \
--property cdrom_bus=ide \
f16-x86_64-openstack-sda

Valid bus values vary per the libvirt_type setting:

qemu/kvm: 'virtio', 'scsi', 'ide', 'virtio'
xen: 'xen', 'ide'
uml: 'uml'

Part of:
https://blueprints.launchpad.net/nova/+spec/libvirt-custom-hardware
http://wiki.openstack.org/LibvirtCustomHardware