To Reproduce Steps to reproduce the behavior:

1. deploy RHOSP 16.2.4
2. check `lsof |grep -c libvirt` on a compute node
3. allow time to pass/create and delete many instances on this compute node
4. check `lsof |grep -c libvirt` again on the same compute node
5. observe the number of open files is significantly higher than before

Expected behavior

• Number of open files remains relatively unchanged or at least proportional to the number of running instances

Bug impact

• If left unchecked the open files can grow high enough to cause libvirt to crash with a too many open files error:

2025-02-12 23:21:41.183+0000: 3721136: error : virPortAllocatorBindToPort:164 : Unable to open test socket: Too many open files 

Known workaround

• Restarting the nova_libvirt container will close out the stale open files but these will continue to increase over time again

Additional context

• This is a very busy environment with 400+ instances per compute node and these instances are being created/deleted often