Zvi Dubitzky wrote:
Forgot to say: I am working with kvm-72 Does that have implication on the correctness of the save/restore of VM state ?
Save-restore on upstream kvm versions is rather error prone. I'm note sure one version is better than the other. Evan today mainline kvm's migration is not stable. We'll send patches this week to fix that. So bottom line, if it works for you, use it.
Zvi Dubitzky Virtualization and System Architecture Email:dubi@il.ibm.com IBM Haifa Research Laboratory Phone: +972-4-8296182 Haifa, 31905, ISRAEL
"Daniel P. Berrange" <berrange@redhat.com> 23/03/2009 11:36 Please respond to "Daniel P. Berrange" <berrange@redhat.com>
To Zvi Dubitzky/Haifa/IBM@IBMIL cc libvir-list@redhat.com Subject Re: [libvirt] save/ restore a domain with kvm
On Sun, Mar 22, 2009 at 08:04:17PM +0200, Zvi Dubitzky wrote:
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 ?
Check the /var/log/libvirt/qemu/$HOME.log file for more information from QEMU
Daniel