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16.7.2.4. 查询 NVIDIA vGPU 功能

要获得有关系统中介质设备的其他信息，如可以创建给定类型中的介质设备数量，请使用 virsh nodedev-list --cap mdev_types 和 virsh nodedev-dumpxml 命令。例如，以下在 Tesla P4 卡中显示可用的 vGPU 类型： 

$ virsh nodedev-list --cap mdev_types
pci_0000_01_00_0
$ virsh nodedev-dumpxml pci_0000_01_00_0
<...>
  <capability type='mdev_types'>
    <type id='nvidia-70'>
      <name>GRID P4-8A</name>
      <deviceAPI>vfio-pci</deviceAPI>
      <availableInstances>1</availableInstances>
    </type>
    <type id='nvidia-69'>
      <name>GRID P4-4A</name>
      <deviceAPI>vfio-pci</deviceAPI>
      <availableInstances>2</availableInstances>
    </type>
    <type id='nvidia-67'>
      <name>GRID P4-1A</name>
      <deviceAPI>vfio-pci</deviceAPI>
      <availableInstances>8</availableInstances>
    </type>
    <type id='nvidia-65'>
      <name>GRID P4-4Q</name>
      <deviceAPI>vfio-pci</deviceAPI>
      <availableInstances>2</availableInstances>
    </type>
    <type id='nvidia-63'>
      <name>GRID P4-1Q</name>
      <deviceAPI>vfio-pci</deviceAPI>
      <availableInstances>8</availableInstances>
    </type>
    <type id='nvidia-71'>
      <name>GRID P4-1B</name>
      <deviceAPI>vfio-pci</deviceAPI>
      <availableInstances>8</availableInstances>
    </type>
    <type id='nvidia-68'>
      <name>GRID P4-2A</name>
      <deviceAPI>vfio-pci</deviceAPI>
      <availableInstances>4</availableInstances>
    </type>
    <type id='nvidia-66'>
      <name>GRID P4-8Q</name>
      <deviceAPI>vfio-pci</deviceAPI>
      <availableInstances>1</availableInstances>
    </type>
    <type id='nvidia-64'>
      <name>GRID P4-2Q</name>
      <deviceAPI>vfio-pci</deviceAPI>
      <availableInstances>4</availableInstances>
    </type>
  </capability>
</...>