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[Lucian Petrut <lpetrut@xxxxxxxxxxxxxxxxxxxxxx>]

This has been fixed at the os-win level, which is now raising a
HyperVVMNotFoundException exception that can properly be handled by the
Nova Hyper-V driver.

Note that a debug message will still be logged in this situation [1], as
seen on a recent Hyper-V CI run[2].

[1] 2017-08-31 12:26:16.625 2336 90871568 MainThread DEBUG os_win._utils [req-69dcf4f7-c61f-4fd0-b7fc-c8adb1026821 - - - - -] x_wmi: Not Found exception raised while running get_vm_summary_info inner C:\Python27\lib\site-packages\os_win\_utils.py:244
[2] http://cloudbase-ci.com/nova/499690/2/Hyper-V_logs/192.168.5.111-compute01/nova-compute.log.gz

FWIW, the CI hardware is being moved, for which reason old CI result
URLs may be unavailable.

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

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https://bugs.launchpad.net/bugs/1653862

Title:
  hyper-v: Exception dispatching event <LifecycleEvent: 1483485307.93,
  9279c28b-b957-4743-8727-81716783a86b => Stopped>: <x_wmi: Not found  >

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  I see these errors quite a bit in the n-cpu logs for hyperv CI runs:

  2017-01-03 23:15:08.141 10848 80822320 MainThread ERROR
  nova.virt.driver [req-050d06ec-3636-4a5d-8b73-0531ef62055a - - - - -]
  Exception dispatching event <LifecycleEvent: 1483485307.93,
  9279c28b-b957-4743-8727-81716783a86b => Stopped>: <x_wmi: Not found  >

  http://64.119.130.115/nova/140045/51/Hyper-V_logs/c2-r22-u04-n03/nova-
  compute.log.gz

  I assume this is a lifecycle event for an instance that has been
  deleted. We're logging an error because of a problem dispatching the
  event.

  I'm not totally sure how to handle this, but if the virt driver could
  raise a NotFound or something we could handle that and not log it as
  an ERROR in the n-cpu logs.

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