Comment 10 for bug 1691362

Or the nova-api log, which nicely shows why the policy check failed, like in #1

Policy check for os_compute_api:os-assisted-volume-snapshots:create failed with credentials {'service_roles': [], 'user_id': u'336c34bdc6e84ce9a850b69688da3366', 'roles': [u'Member'], 'user_domain_id': u'default', 'service_project_id': None, 'service_user_id': None, 'service_user_domain_id': None, 'service_project_domain_id': None, 'is_admin_project': True, 'is_admin': False, 'project_id': u'e6bd0e3ffb6f4bc5a64ec1c3806fa19e', 'project_domain_id': u'default'} authorize /opt/stack/nova/nova/policy.py:168