nova-compute's config_changed hook has an error when an upgrade is attempted from grizzly to havana.
I hit this using the upgrade script from lp:~corey.bryant/+junk/openstack-charm-testing. Basically this deploys the included default.yaml openstack environment on precise-grizzly, followed by 'juju set nova-compute openstack-origin=cloud:precise-havana' to upgrade the nova-compute service.
Traceback:
30903 juju-precise-machine-2:2014-03-04 18:04:47 INFO worker.uniter.jujuc server.go:108 running hook tool "config-get" ["virt-type" "--format=json"]
30904 juju-precise-machine-2:2014-03-04 18:04:47 INFO worker.uniter.jujuc server.go:108 running hook tool "juju-log" ["Installing ['nova-compute', 'genisoimage', ['linux-headers-3.2.0-59-virtual', 'openvsw
30905 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju juju-log.go:66 nova-compute/0: Installing ['nova-compute', 'genisoimage', ['linux-headers-3.2.0-59-virtual', 'openvswitch-datapath-dkms'], ['quant
30906 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK Traceback (most recent call last):
30907 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/var/lib/juju/agents/unit-nova-compute-0/charm/hooks/config-changed", line 239, in <module>
30908 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK main()
30909 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/var/lib/juju/agents/unit-nova-compute-0/charm/hooks/config-changed", line 233, in main
30910 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK hooks.execute(sys.argv)
30911 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/var/lib/juju/agents/unit-nova-compute-0/charm/hooks/charmhelpers/core/hookenv.py", line 381, in execute
30912 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK self._hooks[hook_name]()
30913 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/var/lib/juju/agents/unit-nova-compute-0/charm/hooks/charmhelpers/core/host.py", line 217, in wrapped_f
30914 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK f(*args)
30915 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/var/lib/juju/agents/unit-nova-compute-0/charm/hooks/config-changed", line 73, in config_changed
30916 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK do_openstack_upgrade(CONFIGS)
30917 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/var/lib/juju/agents/unit-nova-compute-0/charm/hooks/nova_compute_utils.py", line 362, in do_openstack_u
30918 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK apt_install(packages=determine_packages(), options=dpkg_opts, fatal=True)
30919 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter modes.go:421 ModeHookError starting
30920 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/var/lib/juju/agents/unit-nova-compute-0/charm/hooks/charmhelpers/fetch/__init__.py", line 95, in apt_in
30921 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK subprocess.check_call(cmd, env=env)
30922 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/usr/lib/python2.7/subprocess.py", line 506, in check_call
30923 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK retcode = call(*popenargs, **kwargs)
30924 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/usr/lib/python2.7/subprocess.py", line 493, in call
30925 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK return Popen(*popenargs, **kwargs).wait()
30926 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
30927 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK errread, errwrite)
30928 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child
30929 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK raise child_exception
30930 juju-precise-machine-2:2014-03-04 18:04:47 INFO juju.worker.uniter context.go:255 HOOK TypeError: coercing to Unicode: need string or buffer, list found
30931 juju-precise-machine-2:2014-03-04 18:04:47 ERROR juju.worker.uniter uniter.go:350 hook failed: exit status 1
