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

Bash
    
xxxxxxxxxx
 
# sudo virsh list
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Additional Information

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

Bash
    
​x
 
2023-08-03 13:42:44.311 INFO nova.virt.libvirt.driver [-] [instance: 12fc8be0-xxxx-4b5d-8688-c41f6cb29248] Migration operation has completed2023-08-03 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: Therequest 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 failed: 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)    ...    ...
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