Xen

virt-up can create and manage guests using the Xen hypervisor.

• To use a Xen hypervisor, set the LIBVIRT_DEFAULT_URI to use the xen system

  LIBVIRT_DEFAULT_URI=xen:///system

  and set virt-install-args to include ‘–hvm’.

  virt-install-args = ‘–hvm …’

• Xen does not support accessing guest information via the qemu-agent

• Some guest images are built with Xen support, but their device configurations are unloaded during initial boot processinmg. A boot parameter xen_emul_unplug=never must be added to the guest boot cmdline. This is usually done by updating the grub configuration when building the template.

  virt-builder-args = …

  –edit “/etc/default/grub:s/GRUB_CMDLINE_LINUX=""/GRUB_CMDLINE_LINUX="xen_emul_unplug=never"/” –run-command ‘grub-mkconfig -o /boot/grub/grub.cfg’ …