Comment 6 for bug 1420572

Revision history for this message
Edward Hope-Morley (hopem) wrote : Re: race between neutron-ovs-cleanup and nova-compute

I have tested both the attached Icehouse and Juno patches and can confirm that they behave as expected i.e.

Installed nova-compute + neutron-plugin-openvswitch-agent (which installs neutron-ovs-cleanup)

In /var/log/upstart/nova-compute.log I get as expected:

libvirt-bin start/running, process 1409
wait-for-state stop/waiting
neutron-ovs-cleanup stop/waiting
wait-for-state stop/waiting

And if I add a 10 second delay to /usr/bin/neutron-ovs-cleanup I get as expected:

(time sudo service neutron-ovs-cleanup restart &); time sudo service nova-compute restart
nova-compute stop/waiting
neutron-ovs-cleanup stop/waiting
neutron-ovs-cleanup start/running

real 0m10.460s
user 0m0.010s
sys 0m0.015s
nova-compute start/running, process 3026

real 0m10.468s
user 0m0.010s
sys 0m0.014s

So, nova-compute will now always wait for ovs-cleanup to complete and I tested that if ovs-cleanup is not installed it gets ignored and nova-compute starts.