yahoo-eng-team team mailing list archive

[Tobias Urdin <tobias.urdin@xxxxxxxxx>]

** Also affects: nova
   Importance: Undecided
       Status: New

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1869929

Title:
  RuntimeError: maximum recursion depth exceeded while calling a Python
  object

Status in OpenStack Compute (nova):
  New
Status in oslo.config:
  New

Bug description:
  When testing upgrading nova packages from Rocky to Train the following
  issue occurs:

  versions:
  oslo.config 6.11.2
  oslo.concurrency 3.30.0
  oslo.versionedobjects 1.36.1
  oslo.db 5.0.2
  oslo.config 6.11.2
  oslo.cache 1.37.0

  Happens here https://github.com/openstack/oslo.db/blob/5.0.2/oslo_db/api.py#L304
  where it register_opts for options.database_opts

  This cmp operation:
  https://github.com/openstack/oslo.config/blob/6.11.2/oslo_config/cfg.py#L363

  If I edit above cmp operation and add print statements before like this:
      if opt.dest in opts:
          print('left: %s' % str(opts[opt.dest]['opt'].name))
          print('right: %s' % str(opt.name))
          if opts[opt.dest]['opt'] != opt:
              raise DuplicateOptError(opt.name)

  It stops here:
  $ nova-compute --help
  left: sqlite_synchronous
  right: sqlite_synchronous
  Traceback (most recent call last):
  ....same exception
  RuntimeError: maximum recursion depth exceeded while calling a Python object

  
  /usr/bin/nova-compute --help
  Traceback (most recent call last):
    File "/usr/bin/nova-compute", line 6, in <module>
      from nova.cmd.compute import main
    File "/usr/lib/python2.7/site-packages/nova/cmd/compute.py", line 29, in <module>
      from nova.compute import rpcapi as compute_rpcapi
    File "/usr/lib/python2.7/site-packages/nova/compute/rpcapi.py", line 30, in <module>
      from nova.objects import service as service_obj
    File "/usr/lib/python2.7/site-packages/nova/objects/service.py", line 170, in <module>
      base.NovaObjectDictCompat):
    File "/usr/lib/python2.7/site-packages/nova/objects/service.py", line 351, in Service
      def _db_service_get_by_compute_host(context, host, use_slave=False):
    File "/usr/lib/python2.7/site-packages/nova/db/api.py", line 91, in select_db_reader_mode
      return IMPL.select_db_reader_mode(f)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 72, in __getattr__
      return getattr(self._api, key)
    File "/usr/lib/python2.7/site-packages/oslo_db/concurrency.py", line 58, in _api
      conf=self._conf, backend_mapping=self._backend_mapping)
    File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 304, in from_config
      conf.register_opts(options.database_opts, 'database')
    File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 2055, in __inner
      result = f(self, *args, **kwargs)
    File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 2317, in register_opts
      self.register_opt(opt, group, clear_cache=False)
    File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 2059, in __inner
      return f(self, *args, **kwargs)
    File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 2293, in register_opt
      return group._register_opt(opt, cli)
    File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 1497, in _register_opt
      if _is_opt_registered(self._opts, opt):
    File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 367, in _is_opt_registered
      if opts[opt.dest]['opt'] != opt:
    File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 642, in __ne__
      return self._vars_for_cmp() != another._vars_for_cmp()
    File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 630, in _vars_for_cmp
      v = dict(vars(self))
  RuntimeError: maximum recursion depth exceeded while calling a Python object

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1869929/+subscriptions