如何在下面的代码中添加串行控制台。尝试添加时，我收到错误“只有第一个控制台可以是串行端口”
</controller>
<controller type='usb' index='0' model='piix3-uhci'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'/>
<interface type='bridge'>
<mac address='00:1a:4a:16:01:0f'/>
<source bridge='XMI'/>
<model type='virtio'/>
<driver name='vhost' queues='5'/>
<filterref filter='vdsm-no-mac-spoofing'/>
<link state='up'/>
<alias name='ua-07767369-9064-45ad-b79c-ec83f89c9141'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<interface type='bridge'>
<mac address='00:1a:4a:16:01:10'/>
<source bridge='IMI'/>
<model type='virtio'/>
<driver name='vhost' queues='5'/>
<filterref filter='vdsm-no-mac-spoofing'/>
<link state='up'/>
<alias name='ua-b66ab5d7-d9e8-4d3c-81dc-c004b9be7b34'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</interface>
<channel type='unix'>
<source mode='bind' path='/var/lib/libvirt/qemu/channels/125f6f93-d3d9-42b5-968d-a0f8b9346320.ovirt-guest-agent.0'/>
<target type='virtio' name='ovirt-guest-agent.0'/>
<address type='virtio-serial' controller='0' bus='0' port='1'/>
</channel>
<channel type='unix'>
<source mode='bind' path='/var/lib/libvirt/qemu/channels/125f6f93-d3d9-42b5-968d-a0f8b9346320.org.qemu.guest_agent.0'/>
<target type='virtio' name='org.qemu.guest_agent.0'/>
<address type='virtio-serial' controller='0' bus='0' port='2'/>
</channel>
<channel type='spicevmc'>
<target type='virtio' name='com.redhat.spice.0'/>
<address type='virtio-serial' controller='0' bus='0' port='3'/>
</channel>
我试图在上面的 guest xml 文件中添加：
<console type='pty'>
<target type='serial' port='0'/>
<alias name='serial0' />
</console>