VM stuck in MIGRATING state in UI forever even when migration completed

Problem

• The VM got stuck in MIGRATING state in UI forever even when migration completed.

Environment

• Platform9 Managed OpenStack - v5.4.9 and Higher

Cause

• VM migration process was completed, but somehow during post migration operation source host did not receive confirmation from destination host about migration completion.

Resolution

• Login to source and destination host and confirm where the VM is running:

Bash

# sudo virsh list

Additional Information

• Below error is observed on source host's ostackhost logs which shows migration was completed,but source host was not aware:

Bash

2023-08-03 13:42:44.311 INFO nova.virt.libvirt.driver [-] [instance: 12fc8be0-xxxx-4b5d-8688-c41f6cb29248] Migration operation has completed
2023-08-03 13:42:44.711 ERROR nova.compute.manager [-] [instance: 12fc8be0-xxxx-4b5d-8688-c41f6cb29248] Volume attachment c1d2cc78-xxxx-44fc-8c2a-5d05f5cbbd32 not deleted on source host 504c93ff-bb85-4f30-a23b-fd6905b3baac during post_live_migration: The request you have made requires authentication. (HTTP 401): cinderclient.exceptions.Unauthorized: The
request you have made requires authentication. (HTTP 401)
...
2023-08-03 13:42:48.433 ERROR nova.compute.manager [-] [instance: 12fc8be0-xxxx-4b5d-8688-c41f6cb29248] Post live migration at destination 2a68278c-0e86-48a7-859c-81974af290ef fa
iled: nova.exception_Remote.NeutronAdminCredentialConfigurationInvalid_Remote: Networking client is experiencing an unauthorized exception.
Traceback (most recent call last):

  File "/opt/pf9/venv/lib/python3.6/site-packages/nova/network/neutron.py", line 184, in wrapper
    ret = obj(*args, **kwargs)

  File "/opt/pf9/venv/lib/python3.6/site-packages/neutronclient/v2_0/client.py", line 269, in _handle_fault_response
    exception_handler_v20(status_code, error_body)

  File "/opt/pf9/venv/lib/python3.6/site-packages/neutronclient/v2_0/client.py", line 93, in exception_handler_v20
    request_ids=request_ids)
    ...
    ...