Comment 7 for bug 2025480

It seems that when we fail we have a log message like this:

2023-07-12T11:36:01.045934+0000 devstack0 nova-compute[358332]: DEBUG nova.compute.resource_tracker [None req-6880982f-bd20-4983-b212-4ce32465fdd7 None None] [instance: ad7997b9-1c2c-4776-a30b-0f2b62fc2222] Instance with task_state "spawning" is not being actively managed by this compute host but has allocations referencing this compute node (3698a4ab-4810-4beb-915a-ed3ed883a2e1): {'resources': {'DISK_GB': 1, 'MEMORY_MB': 256, 'PCPU': 1}}. Skipping heal of allocations during the task state transition. {{(pid=358332) _remove_deleted_instances_allocations /opt/stack/nova/nova/compute/resource_tracker.py:1717}}

Which originates from here:

https://opendev.org/openstack/nova/src/commit/6f56c5c9fd60ee1d53376a9100a9580cb2b38dc3/nova/compute/resource_tracker.py#L1707-L1730

That comment sounds suspiciously relevant to this bug. However not being familiar with nova internals, I'm far from properly understanding at the moment in what conditions we get here and why this happens.

edit: This log message is not present every time the bug is present, so the above may be a false suspicion.