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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

** Changed in: nova
     Assignee: (unassigned) => Matt Riedemann (mriedem)

** Also affects: nova/queens
   Importance: Undecided
       Status: New

** Also affects: nova/rocky
   Importance: Undecided
       Status: New

** Changed in: nova/queens
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1793768

Title:
  VirtDriverNotReady trace in _sync_power_states periodic from ironic
  nova-compute

Status in OpenStack Compute (nova):
  In Progress
Status in OpenStack Compute (nova) queens series:
  Confirmed
Status in OpenStack Compute (nova) rocky series:
  Confirmed

Bug description:
  On nova-compute startup with the ironic driver, the _sync_power_states
  periodic can fail and trace with a VirtDriverNotReady error if ironic-
  api is not yet running. This is normal, and we shouldn't trace for it.

  http://logs.openstack.org/27/602127/2/check/ironic-tempest-dsvm-ipa-
  wholedisk-bios-agent_ipmitool-
  tinyipa/4238d0f/controller/logs/screen-n-cpu.txt.gz?level=TRACE#_Sep_20_21_52_03_587436

  Sep 20 21:52:03.587436 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task [None req-2339900e-55df-468b-95ff-b904d73d5728 None None] Error during ComputeManager._sync_power_states: VirtDriverNotReady: Virt driver is not ready.
  Sep 20 21:52:03.587629 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task Traceback (most recent call last):
  Sep 20 21:52:03.587816 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task   File "/usr/local/lib/python2.7/dist-packages/oslo_service/periodic_task.py", line 220, in run_periodic_tasks
  Sep 20 21:52:03.588019 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task     task(self, context)
  Sep 20 21:52:03.588182 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task   File "/opt/stack/nova/nova/compute/manager.py", line 7462, in _sync_power_states
  Sep 20 21:52:03.588344 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task     num_vm_instances = self.driver.get_num_instances()
  Sep 20 21:52:03.588517 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task   File "/opt/stack/nova/nova/virt/driver.py", line 183, in get_num_instances
  Sep 20 21:52:03.588714 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task     return len(self.list_instances())
  Sep 20 21:52:03.588885 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task   File "/opt/stack/nova/nova/virt/ironic/driver.py", line 624, in list_instances
  Sep 20 21:52:03.589071 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task     fields=['instance_uuid'], limit=0)
  Sep 20 21:52:03.589263 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task   File "/opt/stack/nova/nova/virt/ironic/driver.py", line 611, in _get_node_list
  Sep 20 21:52:03.589447 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task     raise exception.VirtDriverNotReady()
  Sep 20 21:52:03.589602 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task VirtDriverNotReady: Virt driver is not ready.
  Sep 20 21:52:03.589770 ubuntu-xenial-inap-mtl01-0002177186 nova-compute[14241]: ERROR oslo_service.periodic_task

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