Comment 54 for bug 1841189

Use an automated script to reproduce this bug in a 2 + 3 (2-controller, 3-compute, environment using ovs and 1204 mirror) environment. Vm1 live migration of 640 times (After vm1 migrated 640 times, the system crashed with other problems), and did not reproduce this bug. I will fix the system problem later and test again. Also, I'm checking nova's live-migration code to see how the network migrated.
Attach automated test scripts and collected logs.