Comment 3 for bug 1880389

I have collected the log for the live migration. see attachment file.

And the libvirt version is libvirt-python-4.5.0-1.el7.x86_64

The VM image is centos74-mini.

I found The VM Resumed is before the 'brctl addif', so the RARP only can reach the tap device, cloud not reach the virt bridge. please notice this.

dest node nova_compute.log:

2020-05-26 14:56:05.303 6 INFO nova.compute.manager [req-8cd4842d-4783-42b3-9a8e-c4e757b8e6f0 - - - - -] [instance: 7f050d9a-413c-4143-849b-75f931a2c07d] VM Resumed (Lifecycle Event)

dest node neutron_linuxbridge_agent.log:

2020-05-26 14:56:25.743 6 DEBUG neutron.agent.linux.utils [req-fcca2dcc-5578-4827-ae05-d10935d35223 - - - - -] Running command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'brctl', 'addif', 'brq49b34298-a8', 'p2p2.64'] create_process /var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/linux/utils.py:87