I've been working on a related problem, and have also noticed this delay.
These calls happen on separate compute hosts, and lots of things happen in
between. Although the goal of my patch isn't to address the issue you
describe, I have noticed that this patch significantly reduces it anyway:
https
Hi All:
As [1], [2] shows, at the last stage in VM migration, it will call
unplug_vifs(), and then migrate_instance_finish(), in which update_port will
be called immediately. I think the two steps should be executed without no
disturb., but in my test, there is at least 3 seconds between un
