Zhang Qian wrote: This is more or less expected. The way that shutdown works with KVM/Qemu is to inject an "ACPI button pressed" event into the guest domain. It's then up to the guest domain to interpret that and do the appropriate thing. So if there is no guest installed, then there is probably no acpid (or equivalent), so there's nothing to react to the ACPI message. That being said, if there is no guest OS installed, then there is no data to worry about. Why don't you just use virDomainDestroy()? Right, this hasn't been implemented yet since it hasn't been implemented in underlying qemu/kvm yet. -- Chris Lalancette