Comment by schegi for In regards of RDO Kilo , manual update of libvirt.xml doesn't make any sense. Libvirt.xml will be regenerated according classes and methods defined in virt/libvirt/config.py and virt/libvirt/driver.py after rebooting instance via nova. Details here :-http://bderzhavets.blogspot.com/2015/... Original post for IceHouse by Y.Kawadahttp://www.slideshare.net/YukihiroKaw...