Bug 1944751

Summary: Live-migration issue with "NotImplementedError: Cannot load 'vif_type' in the base class"
Product: Red Hat OpenStack Reporter: David Hill <dhill>
Component: openstack-novaAssignee: smooney
Status: CLOSED ERRATA QA Contact: OSP DFG:Compute <osp-dfg-compute>
Severity: high Docs Contact:
Priority: medium    
Version: 16.1 (Train)CC: astupnik, brault, dasmith, ealcaniz, eglynn, jhakimra, jpretori, kchamart, lyarwood, sbauza, sgordon, smooney, spower, sputhenp, vromanso
Target Milestone: z6Keywords: Patch, TestCaseNotNeeded, Triaged
Target Release: 16.1 (Train on RHEL 8.2)   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: openstack-nova-20.4.1-1.20210406183727.el8ost Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1947380 (view as bug list) Environment:
Last Closed: 2021-05-26 13:52:31 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1947380    
Bug Blocks:    

Description David Hill 2021-03-30 15:20:51 UTC 
Impossible to live migrate using contrail2011 on platform OSP16, the live-migration fails with this log on the compute node:
2021-03-30 12:43:47.278 7 ERROR oslo_messaging.rpc.server NotImplementedError: Cannot load 'vif_type' in the base class

It appears to be a known bug: https://bugs.launchpad.net/nova/+bug/1888395
Comment 1 smooney 2021-03-30 16:27:55 UTC 
yes this is a know issue.

i have already fixed this in upstream master and it has been backported to ussuri but not train or osp 16 at this time.
currenlty it should not have been possible for contrail to have completed certification on any realase of osp 16 so we shoudl not have
any customer impacted by this bug alothough it might have blocked upgrades or new deploymetents.

we will be doing bug triage tommorow so we will complete triage of this then however it is vaild.
Comment 20 errata-xmlrpc 2021-05-26 13:52:31 UTC 
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 16.1.6 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-2021:2097