__str__ causes a UnicodeError

[Tobias Urdin]

Hello,
I have upgraded my OpenStack deployment from Juno to Kilo, the following issue was found.

The packages I have.
[root@controller1 ~]# rpm -qa | grep -i cinder
openstack-cinder-2015.1.0-2.el7.noarch
python-cinder-2015.1.0-2.el7.noarch
python-cinderclient-1.1.1-1.el7.centos.noarch

Here is a snippet where the problem occurs.

if six.PY2:
        def __str__(self):
            # NOTE(luisg): Logging in python 2.6 tries to str() log records,
            # and it expects specifically a UnicodeError in order to proceed.
            from oslo_i18n._i18n import _
            msg = _('Message objects do not support str() because they may '
                    'contain non-ascii characters. '
                    'Please use unicode() or translate() instead.')
            raise UnicodeError(msg)

Issue is here: /usr/lib/python2.7/site-packages/oslo_i18n/_message.py", line 167, in __str__
UnicodeError: Message objects do not support str() because they may contain non-ascii characters. Please use unicode() or translate() instead.

From log file /var/log/cinder/cinder-volume-usage-audit.log
2015-06-03 14:00:01.483 7521 CRITICAL cinder [req-d73048bd-77d4-4c67-a772-5e3fab39f057 - - - - -] UnicodeError: Message objects do not support str() because they may contain non-ascii characters. Please use unicode() or translate() instead.
2015-06-03 14:00:01.483 7521 TRACE cinder Traceback (most recent call last):
2015-06-03 14:00:01.483 7521 TRACE cinder File "/bin/cinder-volume-usage-audit", line 10, in <module>
2015-06-03 14:00:01.483 7521 TRACE cinder sys.exit(main())
2015-06-03 14:00:01.483 7521 TRACE cinder File "/usr/lib/python2.7/site-packages/cinder/cmd/volume_usage_audit.py", line 98, in main
2015-06-03 14:00:01.483 7521 TRACE cinder print(_("Starting volume usage audit"))
2015-06-03 14:00:01.483 7521 TRACE cinder File "/usr/lib/python2.7/site-packages/oslo_i18n/_message.py", line 167, in __str__
2015-06-03 14:00:01.483 7521 TRACE cinder raise UnicodeError(msg)
2015-06-03 14:00:01.483 7521 TRACE cinder UnicodeError: Message objects do not support str() because they may contain non-ascii characters. Please use unicode() or translate() instead.
2015-06-03 14:00:01.483 7521 TRACE cinder

What would be causing this issue?
I have disable cinder v1 API in the configuration and also changed all the endpoints to use v2.

Best regards

[Tobias Urdin (tobias-urdin)]

Maybe this should be reported to Cinder? My bad.