autopkgtest fails on s390x: neutron-server.service failed to start

[Martin Pitt]

The neutron-server autopkgtest now consistently fails with

Running upgrade for neutron-fwaas ...
OK
Job for neutron-server.service failed.
See "systemctl status neutron-server.service" and "journalctl -xe" for details.

See http://autopkgtest.ubuntu.com/packages/n/neutron/yakkety/s390x

This started a few days ago again, and already happened in September. Please make this more robust, as it's apparently some kind of race condition.

[Martin Pitt (pitti)]

Please also make the test output more useful on failures, by actually showing the journal and other potentially interesting data.

[Corey Bryant (corey.bryant)]

I agree this is likely a race condition since it only seems to be occurring on s390x. This test was recently updated to dump the neutron-server.log. Let's see if we get anything useful from that the next time this fails.

[Corey Bryant (corey.bryant)]

I think we may have fixed this with the addition of 'Restrictions: needs-recommends' to debian/tests/control. This makes sure that neutron-plugin-ml2 is installed. I'm going to mark this as fix released and we can reopen it if this issue resurfaces.