[libvirt] run domain in paused state

Hi all. I need to construct domain, run it in paused state , attach some devices and unpause it. How can i do that in libvirt api (i'm use ruby). As i see virsh have start --paused option, but how can i specify state in domain xml? -- Vasiliy Tolstov, e-mail: v.tolstov@selfip.ru jabber: vase@selfip.ru