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[Matt Riedemann <mriedem@xxxxxxxxxx>]

How about not opening bugs against community nova for your busted out of
tree driver, thanks.

http://git.openstack.org/cgit/stackforge/powervc-driver/tree/cinder-
powervc/powervc/volume/driver/powervc.py#n312

** Changed in: nova
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1447989

Title:
  nova volume-detach volume failed due to arguments counts mismatch?

Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  nova attached succeeded but when detach, after debug the nova manager
  reports error:

  > /usr/lib/python2.7/site-packages/nova/compute/manager.py(4927)detach_volume()
  -> self.volume_api.detach(context.elevated(), volume_id)

  --------Start--------
  Invalid input received: The server could not comply with the request since it is either malformed or otherwise incorrect. (HTTP 400) (Request-ID: req-9a6619bc-01bd-4226-9904-45e1f571a5bb)
  --------End--------

  checked in /var/log/cinder/api.log, it reports:

  --------Start--------
  2015-04-24 04:18:06.461 27284 ERROR cinder.api.openstack.wsgi [req-9a6619bc-01bd-4226-9904-45e1f571a5bb 486b55b3d6254105b08f1a449777507d 861703cfc7cf4f67a6a0049618b0865f - - -] Exception handling resource: detach_volume() takes exactly 3 arguments (4 given)
  Traceback (most recent call last):

    File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 142, in _dispatch_and_reply
      executor_callback))

    File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 186, in _dispatch
      executor_callback)

    File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 130, in _do_dispatch
      result = func(ctxt, **new_args)

    File "/usr/lib/python2.7/site-packages/osprofiler/profiler.py", line 105, in wrapper
      return f(*args, **kwargs)

    File "/usr/lib/python2.7/site-packages/cinder/volume/manager.py", line 157, in ldo_inner1
      return ldo_inner2(inst, context, volume_id, attachment_id, **kwargs)

    File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 445, in inner
      return f(*args, **kwargs)

    File "/usr/lib/python2.7/site-packages/cinder/volume/manager.py", line 156, in ldo_inner2
      return f(*_args, **_kwargs)

    File "/usr/lib/python2.7/site-packages/cinder/volume/manager.py", line 897, in detach_volume
      {'attach_status': 'error_detaching'})

    File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 85, in __exit__
      six.reraise(self.type_, self.value, self.tb)

    File "/usr/lib/python2.7/site-packages/cinder/volume/manager.py", line 892, in detach_volume
      self.driver.detach_volume(context, volume, attachment)

    File "/usr/lib/python2.7/site-packages/osprofiler/profiler.py", line 105, in wrapper
      return f(*args, **kwargs)

  TypeError: detach_volume() takes exactly 3 arguments (4 given)
  --------End--------

  The result is my detach volume always in "detaching" status, although the real status is already detached.
  [root@controller ~]# cinder list
  | b1baa918-5a4f-40fc-82ab-63a9aade0efc | detaching |      test-for-attach-1       |  1   | pvc:22ba67376ed3d811e4ba520000c9d2fb5c:dev4clstr base template |  false   |  

  I believe this is a bug that need to take care

  
  --------------------
  1. version:
  [root@controller ~]# rpm -aq | grep nova
  openstack-nova-conductor-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-network-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-cells-2015.1-201504161438.ibm.el7.111.noarch
  python-novaclient-2.23.0-1.ibm.el7.noarch
  openstack-nova-scheduler-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-novncproxy-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-objectstore-2015.1-201504161438.ibm.el7.111.noarch
  python-nova-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-api-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-console-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-compute-prereqs-2013.1-201503192011.ibm.2.ppc64
  openstack-nova-compute-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-common-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-cert-2015.1-201504161438.ibm.el7.111.noarch
  openstack-nova-2015.1-201504161438.ibm.el7.111.noarch

  2. logs:
  see above

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