2014-03-28 12:47:56,367 [ERROR jobs.jobhandler] [inventory IP] Plugin nav.ipdevpoll.plugins.psu.PowerSupplyUnit(u'IP') reported an unhandled failure
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 391, in errback
    self._startRunCallbacks(fail)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 458, in _startRunCallbacks
    self._runCallbacks()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 545, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1095, in gotResult
    _inlineCallbacks(r, g, deferred)
--- <exception caught here> ---
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1037, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/usr/lib/python2.7/dist-packages/twisted/python/failure.py", line 382, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/plugins/psu.py", line 121, in handle
    yield self._handle_unit(psu_or_fan)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1037, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/usr/lib/python2.7/dist-packages/twisted/python/failure.py", line 382, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/plugins/psu.py", line 141, in _handle_unit
    ret = yield control.is_psu_up(internal_index)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1037, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/usr/lib/python2.7/dist-packages/twisted/python/failure.py", line 382, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/usr/local/nav/lib/python/nav/mibs/cisco_entity_fru_control_mib.py", line 118, in is_psu_up
    self.psu_status_table = yield self._get_power_status_table()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1037, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/usr/lib/python2.7/dist-packages/twisted/python/failure.py", line 382, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/usr/local/nav/lib/python/nav/mibs/cisco_entity_fru_control_mib.py", line 62, in _get_power_status_table
    table = yield self._get_named_table('cefcFRUPowerStatusTable')
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1039, in _inlineCallbacks
    result = g.send(result)
  File "/usr/local/nav/lib/python/nav/mibs/cisco_entity_fru_control_mib.py", line 50, in _get_named_table
    status_table = EntityTable(named_table)
  File "/usr/local/nav/lib/python/nav/mibs/entity_mib.py", line 114, in __init__
    self.clean()
  File "/usr/local/nav/lib/python/nav/mibs/entity_mib.py", line 194, in clean
    self._fix_broken_chassis_relative_positions()
  File "/usr/local/nav/lib/python/nav/mibs/entity_mib.py", line 210, in _fix_broken_chassis_relative_positions
    chassis = self.get_chassis()
  File "/usr/local/nav/lib/python/nav/mibs/entity_mib.py", line 163, in get_chassis
    if self.is_chassis(entity)]
  File "/usr/local/nav/lib/python/nav/mibs/entity_mib.py", line 125, in is_chassis
    return e['entPhysicalClass'] == 'chassis'
exceptions.KeyError: 'entPhysicalClass'