11.3. Using KVM para-virtualized drivers for existing devices
You can modify an existing hard disk device attached to the guest to use the
driver instead of the virtualized IDE driver. This example edits libvirt configuration files. Alternatively,
can add a new device using the para-virtualized drivers Section 11.4, “Using KVM para-virtualized drivers for new devices”
. Note that the guest does not need to be shut down to perform these steps, however the change will not be applied until the guest is completely shut down and rebooted.