Patch Re: [Libvir] save and restore guest

On Mon, Oct 08, 2007 at 04:27:00PM +0200, Farkas Levente wrote: > Daniel P. Berrange wrote: >> On Sat, Oct 06, 2007 at 02:29:39PM +0200, Farkas Levente wrote: >>> hi, >>> if i use xen with xendomain it's possible to save and restore guest >>> state. if i use libvirt it's not working (at least by default with kvm). >>> i mean if i stop or restart libvirtd all guests a stopped and even if i >>> restart libvirtd i've to start all guests manually. imho this's a very >>> essential feature. what is the reason this not working with libvirtd?: >>> - this feature is missing from libvirtd? or >> You can set KVM/QEMU guests to autostart with >> >> virsh autostart {NAME|ID|UUID} > thanks, but go back to my first question. afais /etc/init.d/libvirtd > simple kill libvirtd, but virsh has a command save/restore. wouldn't be > it's much better to save guest's state on stop, restore on start in > stead of start if there is a saved state. i can send a patch to the > /etc/init.d/libvirtd, just would like to know is there any reason it's > not that way? anyway xendomains do it in the save way. The save/restore capability is currently only available in the KVM-ified version of QEMU. We could make it try to save, and failing that destroy the guest. The xendomains scripts isn't a good model to emulate though. The autostart/kill functionality is part of the libvirt daemon itself. Any save/restore capability would be best integrated there