Should setup a net failover device.
The xml like this,
<interface type='network'>
<mac address='52:54:00:00:12:53'/>
<source network=’virbr0’ />
<model type='virtio'/>
<driver name='vhost' queues='4'/>
<link state='down'/>
<teaming type='persistent'/>
<alias name='ua-backup0'/>
</interface>
<interface type='hostdev' managed='yes'>
<mac address='52:54:00:00:12:53'/>
<source>
<address type='pci' domain='0x0000' bus='0x42' slot='0x02' function='0x5'/>
</source>
<teaming type='transient' persistent='ua-backup0'/>
</interface>
After the VM booted, detach the VF and attach the VF.
The vf.xml like this,
<interface type='hostdev' managed='yes'>
<mac address='52:54:00:00:12:53'/>
<source>
<address type='pci' domain='0x0000' bus='0x42' slot='0x02' function='0x5'/>
</source>
<teaming type='transient' persistent='ua-backup0'/>
</interface>
Command like this, virsh detach-device $domain vf.xml ; , virsh attach-device
$domain vf.xml
The VM hangs.
--
Best Regards,
Faicker
