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[Artom Lifshitz <notartom@xxxxxxxxx>]

Public bug reported:

The following exception appears in Nova's compute log when booting an
instance with the config parameter max_concurrent_builds set to 0:

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/eventlet/queue.py", line 117, in switch
    self.greenlet.switch(value)
  File "/opt/stack/nova/nova/utils.py", line 1201, in context_wrapper
    func(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 271, in inner
    return f(*args, **kwargs)
  File "/opt/stack/nova/nova/compute/manager.py", line 1850, in _locked_do_build_and_run_instance
    self._do_build_and_run_instance(*args, **kwargs)
TypeError: __exit__() takes exactly 1 argument (4 given)

The instance boots fine, but it would be better to not have this
exception in the logs, as it could confuse someone debugging an
unrelated issue.

** Affects: nova
     Importance: Undecided
     Assignee: Artom Lifshitz (notartom)
         Status: In Progress

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https://bugs.launchpad.net/bugs/1520633

Title:
  Exception in compute log when booting an instance with
  max_concurrent_builds=0

Status in OpenStack Compute (nova):
  In Progress

Bug description:
  The following exception appears in Nova's compute log when booting an
  instance with the config parameter max_concurrent_builds set to 0:

  Traceback (most recent call last):
    File "/usr/local/lib/python2.7/dist-packages/eventlet/queue.py", line 117, in switch
      self.greenlet.switch(value)
    File "/opt/stack/nova/nova/utils.py", line 1201, in context_wrapper
      func(*args, **kwargs)
    File "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 271, in inner
      return f(*args, **kwargs)
    File "/opt/stack/nova/nova/compute/manager.py", line 1850, in _locked_do_build_and_run_instance
      self._do_build_and_run_instance(*args, **kwargs)
  TypeError: __exit__() takes exactly 1 argument (4 given)

  The instance boots fine, but it would be better to not have this
  exception in the logs, as it could confuse someone debugging an
  unrelated issue.

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