chetan saundankar wrote: Yes, you would use virDomainCreateLinux. Despite the name, this is the call for creating guests of many different types. virDomainCreate is slightly different -- it takes a domain which already exists but is shut down ("defined" in the terminology) and starts it running. Basically the same as 'virsh start'. Now while it is possible to create the XML by hand for virDomainCreateLinux (see: http://libvirt.org/format.html) we also have a library and command-line tool for doing it, and depending on what you need that might be easier to use: "virt-install" from http://www.virt-manager.org/scmrepo.html You need the complete XML, see http://libvirt.org/format.html . I looked at the code and it seems like it is up to xend to create a UUID if you don't supply one in the XML. Therefore you'd be relying on xend to do this. Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903