Bug 2076884

Hi Lucca,

To my knowledge nothing has been added in 16.2 that would address this kind of issue. Would it be possible to provide an example live migration request UUID (from the output `openstack server event list --long`), as well as sosreports from the source and destination nodes? That'll help us understand what's going on here.

Thanks!

Hello Artom,
customer just attached the files after a reproduction on the case.
There's also the output of the event show:

{
  "action": "live-migration",
  "events": [
    {
      "event": "compute_check_can_live_migrate_destination",
      "start_time": "2022-04-21T09:44:09.000000",
      "finish_time": "2022-04-21T09:44:09.000000",
      "result": "Error",
      "traceback": "  File \"/usr/lib/python3.6/site-packages/nova/compute/utils.py\", line 1372, in decorated_function\n    return function(self, context, *args, **kwargs)\n  File \"/usr/lib/python3.6/site-packages/nova/compute/manager.py\", line 219, in decorated_function\n    kwargs['instance'], e, sys.exc_info())\n  File \"/usr/lib/python3.6/site-packages/oslo_utils/excutils.py\", line 220, in __exit__\n    self.force_reraise()\n  File \"/usr/lib/python3.6/site-packages/oslo_utils/excutils.py\", line 196, in force_reraise\n    six.reraise(self.type_, self.value, self.tb)\n  File \"/usr/lib/python3.6/site-packages/six.py\", line 675, in reraise\n    raise value\n  File \"/usr/lib/python3.6/site-packages/nova/compute/manager.py\", line 207, in decorated_function\n    return function(self, context, *args, **kwargs)\n  File \"/usr/lib/python3.6/site-packages/nova/compute/manager.py\", line 6789, in check_can_live_migrate_destination\n    block_migration, disk_over_commit)\n  File \"/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py\", line 8249, in check_can_live_migrate_destination\n    self._compare_cpu(None, source_cpu_info, instance)\n  File \"/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py\", line 8566, in _compare_cpu\n    raise exception.InvalidCPUInfo(reason=m % {'ret': ret, 'u': u})\n"
    },
    {
      "event": "conductor_migrate_server",
      "start_time": "2022-04-21T09:44:08.000000",
      "finish_time": "2022-04-21T09:44:11.000000",
      "result": "Error",
      "traceback": "  File \"/usr/lib/python3.6/site-packages/nova/compute/utils.py\", line 1372, in decorated_function\n    return function(self, context, *args, **kwargs)\n  File \"/usr/lib/python3.6/site-packages/nova/conductor/manager.py\", line 291, in migrate_server\n    block_migration, disk_over_commit, request_spec)\n  File \"/usr/lib/python3.6/site-packages/nova/conductor/manager.py\", line 474, in _live_migrate\n    migration.save()\n  File \"/usr/lib/python3.6/site-packages/oslo_utils/excutils.py\", line 220, in __exit__\n    self.force_reraise()\n  File \"/usr/lib/python3.6/site-packages/oslo_utils/excutils.py\", line 196, in force_reraise\n    six.reraise(self.type_, self.value, self.tb)\n  File \"/usr/lib/python3.6/site-packages/six.py\", line 675, in reraise\n    raise value\n  File \"/usr/lib/python3.6/site-packages/nova/conductor/manager.py\", line 456, in _live_migrate\n    task.execute()\n  File \"/usr/lib/python3.6/site-packages/nova/conductor/tasks/base.py\", line 27, in wrap\n    self.rollback()\n  File \"/usr/lib/python3.6/site-packages/oslo_utils/excutils.py\", line 220, in __exit__\n    self.force_reraise()\n  File \"/usr/lib/python3.6/site-packages/oslo_utils/excutils.py\", line 196, in force_reraise\n    six.reraise(self.type_, self.value, self.tb)\n  File \"/usr/lib/python3.6/site-packages/six.py\", line 675, in reraise\n    raise value\n  File \"/usr/lib/python3.6/site-packages/nova/conductor/tasks/base.py\", line 24, in wrap\n    return original(self)\n  File \"/usr/lib/python3.6/site-packages/nova/conductor/tasks/base.py\", line 42, in execute\n    return self._execute()\n  File \"/usr/lib/python3.6/site-packages/nova/conductor/tasks/live_migrate.py\", line 103, in _execute\n    self.destination, dest_node, self.limits = self._find_destination()\n  File \"/usr/lib/python3.6/site-packages/nova/conductor/tasks/live_migrate.py\", line 503, in _find_destination\n    return_objects=True, return_alternates=False)\n  File \"/usr/lib/python3.6/site-packages/nova/scheduler/client/query.py\", line 42, in select_destinations\n    instance_uuids, return_objects, return_alternates)\n  File \"/usr/lib/python3.6/site-packages/nova/scheduler/rpcapi.py\", line 160, in select_destinations\n    return cctxt.call(ctxt, 'select_destinations', **msg_args)\n  File \"/usr/lib/python3.6/site-packages/oslo_messaging/rpc/client.py\", line 181, in call\n    transport_options=self.transport_options)\n  File \"/usr/lib/python3.6/site-packages/oslo_messaging/transport.py\", line 129, in _send\n    transport_options=transport_options)\n  File \"/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py\", line 646, in send\n    transport_options=transport_options)\n  File \"/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py\", line 636, in _send\n    raise result\n"
    }
  ],
  "instance_uuid": "1669a92d-75f5-4c11-b254-85553e917cad",
  "message": "Error",
  "project_id": "2ed016f0f951492391dc3448f6124bce",
  "request_id": "req-745b155f-7469-4dfe-beb7-b5a2f978cd1b",
  "start_time": "2022-04-21T09:44:08.000000",
  "user_id": "a9337a5539953fe05571c3e3c1108a92108683cdb622919357087b9278be47d3"
}

thank you!

(In reply to Artom Lifshitz from comment #1)
> Hi Lucca,
> 
> To my knowledge nothing has been added in 16.2 that would address this kind
> of issue. Would it be possible to provide an example live migration request
> UUID (from the output `openstack server event list --long`), as well as
> sosreports from the source and destination nodes? That'll help us understand
> what's going on here.
> 
> Thanks!

Hi Kashyap,
thank you.
Can you make a hotfix with the patch so we can install it?

Thanks!

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Red Hat OpenStack Platform 16.1.9 bug fix and enhancement advisory), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:8795

The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days