Well, according to
http://libvirt.org/html/libvirt-libvirt.html#virDomainManagedSave
domain will be suspended.
After snapshotting there is new _create_domain call:
if state == power_state.RUNNING:
virt_dom.managedSave(0)
... snapshotting...
finally:
libvirt_utils.delete_snapshot(disk_path, snapshot_name)
if state == power_state.RUNNING:
self._create_domain(domain=virt_dom)
So, Is this actually "live" snapshot right now?
>> But qemu can also write the vm state outside of the backend image, which
>> should be usable with all image backends.
This can be exploited for saving VM states. There is blueprint for that:
https://blueprints.launchpad.net/nova/+spec/live-snapshots
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