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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Public bug reported:

The xenserver CI n-cpu logs are full of InstanceNotFound tracebacks in
detach_interface during what appears to be instance delete, which should
be an OK situation that we shouldn't log a traceback ERROR.

http://dd6b71949550285df7dc-
dda4e480e005aaa13ec303551d2d8155.r49.cf1.rackcdn.com/37/557837/1/check
/dsvm-tempest-neutron-network/86c316e/logs/screen-n-cpu.txt.gz

Mar 29 16:29:49.390491 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [None req-84263977-247f-4c70-9ddf-003680e4eaf8 service nova] [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca] detach network interface 1de85994-b333-4ea1-946b-ce3b11c2f8c5 failed.: InstanceNotFound: Instance instance-00000054 could not be found.
Mar 29 16:29:49.390900 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca] Traceback (most recent call last):
Mar 29 16:29:49.391239 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]   File "/opt/stack/new/nova/nova/virt/xenapi/vmops.py", line 2696, in detach_interface
Mar 29 16:29:49.391522 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]     vm_ref = self._get_vm_opaque_ref(instance)
Mar 29 16:29:49.391802 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]   File "/opt/stack/new/nova/nova/virt/xenapi/vmops.py", line 983, in _get_vm_opaque_ref
Mar 29 16:29:49.392067 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]     raise exception.InstanceNotFound(instance_id=instance['name'])
Mar 29 16:29:49.392331 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca] InstanceNotFound: Instance instance-00000054 could not be found.
Mar 29 16:29:49.393133 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: xenserver

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https://bugs.launchpad.net/bugs/1759979

Title:
  xenapi: InstanceNotFound trace in detach_interface during instance
  delete

Status in OpenStack Compute (nova):
  New

Bug description:
  The xenserver CI n-cpu logs are full of InstanceNotFound tracebacks in
  detach_interface during what appears to be instance delete, which
  should be an OK situation that we shouldn't log a traceback ERROR.

  http://dd6b71949550285df7dc-
  dda4e480e005aaa13ec303551d2d8155.r49.cf1.rackcdn.com/37/557837/1/check
  /dsvm-tempest-neutron-network/86c316e/logs/screen-n-cpu.txt.gz

  Mar 29 16:29:49.390491 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [None req-84263977-247f-4c70-9ddf-003680e4eaf8 service nova] [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca] detach network interface 1de85994-b333-4ea1-946b-ce3b11c2f8c5 failed.: InstanceNotFound: Instance instance-00000054 could not be found.
  Mar 29 16:29:49.390900 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca] Traceback (most recent call last):
  Mar 29 16:29:49.391239 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]   File "/opt/stack/new/nova/nova/virt/xenapi/vmops.py", line 2696, in detach_interface
  Mar 29 16:29:49.391522 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]     vm_ref = self._get_vm_opaque_ref(instance)
  Mar 29 16:29:49.391802 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]   File "/opt/stack/new/nova/nova/virt/xenapi/vmops.py", line 983, in _get_vm_opaque_ref
  Mar 29 16:29:49.392067 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]     raise exception.InstanceNotFound(instance_id=instance['name'])
  Mar 29 16:29:49.392331 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca] InstanceNotFound: Instance instance-00000054 could not be found.
  Mar 29 16:29:49.393133 dsvm-devstack-citrix-mia-nodepool-934537 nova-compute[18313]: ERROR nova.virt.xenapi.vmops [instance: 4e642f5f-abf3-4db9-b630-a1bff1fd1cca]

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