Hi, On wtorek, 12 października 2021 16:08:55 CEST 鲁 成 wrote: > Issue: openstack live migrate ping packets lose > > Env: > Open vSwitch 2.12.0 > ovn-controller 21.06.0 > > Issue I met: > when I keep ping vm1, and try to do live-migrate for vm1. > I except ping packet will not lose, but almost lose 5 ~ 10 packet each times. > > What I found: > when do a live-migrate, nova will create a tap on target node, after migrate > finished, will delete tap on the source node Ovn controller on the target > node will try to claim lport, but it will not succeed until source node > release lport. But it take some time from release lport to claim succeed, and > at this time port_binding chassis field is empty, so it not gonna generate > openflow and send to vswitchd. > Sent from my iPhone
This is know issue in OpenStack Nova and Neutron. We have proposed changed to address live migration issues in the ML2/OVN case. Please see: https:// review.opendev.org/c/openstack/neutron-specs/+/799198 and related patches for more details. -- Slawek Kaplonski Principal Software Engineer Red Hat
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