Openstack network node becomes unusable with "unregister_netdevice: waiting for qr-XXXXXXXX-XX to become free. Usage count = 1" message visible in the system logs
Issue
-
An Openstack network node stops forwarding traffic for floating IPs and the following message referring to a qr-* interface is seen repeated in the logs.
kernel: unregister_netdevice: waiting for qr-12345678-ab to become free. Usage count = 1
Environment
- Red Hat Openstack
- kernel-3.10.0-1062.el7 series
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