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[tanghang <1868889@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description
===========
The instance turned to "error" state after reboot compute node. And I tried the "nova reset-state <id> --active" command, the instance turned into active state. But, when I login the compute node and use "virsh list" command, there are no instance on the compute node.Then, I ran the "openstack server stop" and "openstack server start" command.After that, the server recovered.

Steps to reproduce
==================
1. Create a instance
2. Confirm the compute node the instance running on
3. Reboot the compute node

===============
After the execution of the steps above, what should have
happened if the issue wasn't present?

the server shoud migrated to other compute nodes or should recover automatically after the conpute node reboot.
Actual result
=============
the server turned into "error" state

Environment
===========
1. Exact version of OpenStack you are running. See the following
  list for all releases: http://docs.openstack.org/releases/
       18.2.3

2. Which hypervisor did you use?
   Libvirt + KVM

2. Which storage type did you use?
   Ceph

3. Which networking type did you use?
   Neutron with OpenVSwitch

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1868889

Title:
  instance turned to "error" state after reboot compute node

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========
  The instance turned to "error" state after reboot compute node. And I tried the "nova reset-state <id> --active" command, the instance turned into active state. But, when I login the compute node and use "virsh list" command, there are no instance on the compute node.Then, I ran the "openstack server stop" and "openstack server start" command.After that, the server recovered.

  Steps to reproduce
  ==================
  1. Create a instance
  2. Confirm the compute node the instance running on
  3. Reboot the compute node

  ===============
  After the execution of the steps above, what should have
  happened if the issue wasn't present?

  the server shoud migrated to other compute nodes or should recover automatically after the conpute node reboot.
  Actual result
  =============
  the server turned into "error" state

  Environment
  ===========
  1. Exact version of OpenStack you are running. See the following
    list for all releases: http://docs.openstack.org/releases/
         18.2.3

  2. Which hypervisor did you use?
     Libvirt + KVM

  2. Which storage type did you use?
     Ceph

  3. Which networking type did you use?
     Neutron with OpenVSwitch

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https://bugs.launchpad.net/nova/+bug/1868889/+subscriptions