[libvirt] save/ restore a domain with kvm

I am working with virsh The version of VIRSH as it shows is : virsh # version Compiled against library: libvir 0.4.4 Using library: libvir 0.4.4 Using API: QEMU 0.4.4 Running hypervisor: QEMU 0.9.1 Under virsh I do the following : 1. suspend a running VM 2. save it to a file with the 'save' command 3. restore the saved domain file with the 'restore' command while the domain is still in the suspend mode or after it was shutdown/destroyed (not seen with 'list --all) In either case I get the error message saying : virsh # restore /home/dubi/xml/vm_dubi2.sav libvir: QEMU error : operation failed: failed to start VM error: Failed to restore domain from /home/dubi/xml/vm_dubi2.xml Any idea what is the failure reason ? The content of the saved domain file isattached: Zvi Dubitzky Virtualization and System Architecture Email:dubi@il.ibm.com IBM Haifa Research Laboratory Phone: +972-4-8296182 Haifa, 31905, ISRAEL