Comment 3 for bug 1254795

I have the same problem, and it only seems to afflict nova-* processes.

Please consider following some advice from fungi (via #openstack-infra) to avoid future regressions:

"If you're interested in a clean unstack, maybe add a step in devstack-gate scripts after tempest/grenade runs to perform the unstack and then use something like grenade's check-sanity step to confirm the worrysome processes are no longer running."