driftfix 'slew' Warning

Symptom

Error log: libvirt.libvirtError: internal error: QEMU unexpectedly closed the monitor (vm='instance-00000230'): 2025-05-15T11:05:05.466429Z qemu-system-aarch64: warning: driftfix 'slew' is not available with this machine

Root Cause Analysis

The current QEMU model does not support driftfix=slew.

Solution

sudo crudini --set /etc/nova/nova.conf libvirt hw_machine_type virt
systemctl restart openstack-nova-compute