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 -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). 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. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1653862/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp