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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => kilo-3

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https://bugs.launchpad.net/bugs/1327218

Title:
  Volume detach failure because of invalid bdm.connection_info

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  Example of this here:

  http://logs.openstack.org/33/97233/1/check/check-grenade-
  dsvm/f7b8a11/logs/old/screen-n-cpu.txt.gz?level=TRACE#_2014-06-02_14_13_51_125

     File "/opt/stack/old/nova/nova/compute/manager.py", line 4153, in _detach_volume
       connection_info = jsonutils.loads(bdm.connection_info)
     File "/opt/stack/old/nova/nova/openstack/common/jsonutils.py", line 164, in loads
       return json.loads(s)
     File "/usr/lib/python2.7/json/__init__.py", line 326, in loads
       return _default_decoder.decode(s)
     File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
       obj, end = self.raw_decode(s, idx=_w(s, 0).end())
   TypeError: expected string or buffer

  and this was in grenade with stable/icehouse nova commit 7431cb9

  There's nothing unusual about the test which triggers this - simply
  attaches a volume to an instance, waits for it to show up in the
  instance and then tries to detach it

  logstash query for this:

    message:"Exception during message handling" AND message:"expected
  string or buffer" AND message:"connection_info =
  jsonutils.loads(bdm.connection_info)" AND tags:"screen-n-cpu.txt"

  but it seems to be very rare

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