nova-lxd

live migration don`t work

Bug #1711568 reported by fxpester
18
This bug affects 4 people
Affects Status Importance Assigned to Milestone
nova-lxd
New
Undecided
Unassigned

Bug Description

devstack ocata, on xenial, trace:

2017-08-18 13:25:43.931 ERROR object [req-51f26b6d-803d-44f6-aa6a-283e754d0515 admin admin] Unable to instantiate unregistered object type LXDLiveMigrateData
2017-08-18 13:25:43.932 ERROR oslo_messaging.rpc.server [req-51f26b6d-803d-44f6-aa6a-283e754d0515 admin admin] Exception during message handling
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server Traceback (most recent call last):
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line 155, in _process_incoming
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server res = self.dispatcher.dispatch(message)
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 222, in dispatch
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server return self._do_dispatch(endpoint, method, ctxt, args)
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 190, in _do_dispatch
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server new_args[argname] = self.serializer.deserialize_entity(ctxt, arg)
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server File "/opt/stack/nova/nova/rpc.py", line 147, in deserialize_entity
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server return self._base.deserialize_entity(context, entity)
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server File "/opt/stack/nova/nova/objects/base.py", line 253, in deserialize_entity
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server entity = self._process_object(context, entity)
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server File "/opt/stack/nova/nova/objects/base.py", line 202, in _process_object
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server objinst = NovaObject.obj_from_primitive(objprim, context=context)
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server File "/usr/local/lib/python2.7/dist-packages/oslo_versionedobjects/base.py", line 414, in obj_from_primitive
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server objclass = cls.obj_class_from_name(objname, objver)
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server File "/usr/local/lib/python2.7/dist-packages/oslo_versionedobjects/base.py", line 365, in obj_class_from_name
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server raise exception.UnsupportedObjectError(objtype=objname)
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server UnsupportedObjectError: Unsupported object type LXDLiveMigrateData
2017-08-18 13:25:43.932 TRACE oslo_messaging.rpc.server

Revision history for this message
Chris MacNaughton (chris.macnaughton) wrote :

I have been running tempest against a new devstack and live migration seems fine. If this is still happening, can you re-open the bug. Thanks!

Changed in nova-lxd:
status: New → Incomplete
Revision history for this message
Rikimaru Honjo (honjo-rikimaru-c6) wrote :

Hello Chris,

This issue is happening in my environment.
I use the latest openstack of master branch.

In my understand, nova-compute and nova-conductor require registering the LXDLiveMigrateData object.

We can register it for nova-compute because nova-compute can imports nova-lxd driver. I attach a patch to do it.

But, nova-conductor cannot do it because nova-conductor don't use nova-lxd driver.
I currently don't have solutions for this issue.

Changed in nova-lxd:
status: Incomplete → New
Revision history for this message
Rikimaru Honjo (honjo-rikimaru-c6) wrote :

I sent a mail about this issue to openstack-discuss mailing list.

As a result, Matt Riedemann explained how power-vm driver addressed a similar issue.
http://lists.openstack.org/pipermail/openstack-discuss/2019-March/004165.html

Rikimaru Honjo (honjo-rikimaru-c6)
Changed in nova-lxd:
assignee: nobody → Rikimaru Honjo (honjo-rikimaru-c6)
Rikimaru Honjo (honjo-rikimaru-c6)
Changed in nova-lxd:
assignee: Rikimaru Honjo (honjo-rikimaru-c6) → nobody
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