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[hai wu <1941675@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

This is Openstack Train release running on Debian.

Each time after live migrating a VM from one hypervisor (source_host) to
another hypervisor (target_host), nova-compute service is still up and
running, but nova-conductor from controller keeps saying this: Failed to
compute_task_migrate_server: Compute service of source_host is
unavailable at this time.: nova.exception.ComputeServiceUnavailable:
Compute service of source_host is unavailable at this time

It complains about nova compute service on source host every time after
live migrating the vm.

Restarting nova-compute works around this issue, but this requiring
restarting nova-compute every time after vm live migration away from
source host.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1941675

Title:
  nova.exception.ComputeServiceUnavailable after vm live migration

Status in OpenStack Compute (nova):
  New

Bug description:
  This is Openstack Train release running on Debian.

  Each time after live migrating a VM from one hypervisor (source_host)
  to another hypervisor (target_host), nova-compute service is still up
  and running, but nova-conductor from controller keeps saying this:
  Failed to compute_task_migrate_server: Compute service of source_host
  is unavailable at this time.:
  nova.exception.ComputeServiceUnavailable: Compute service of
  source_host is unavailable at this time

  It complains about nova compute service on source host every time
  after live migrating the vm.

  Restarting nova-compute works around this issue, but this requiring
  restarting nova-compute every time after vm live migration away from
  source host.

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