require 'libvirt'

   conn = Libvirt::open("qemu:///system")
   puts conn.capabilities

   File::open("domain.xml") do |f|
     conn.createDomainLinux(f.readlines, nil)
   end

   dom = conn.lookupDomainByName("mydomain")
   dom.suspend
   dom.resume
   puts dom.xmlDesc