12.3. Assigning a PCI Device with virt-install

Procedure 12.5. Assigning a PCI device to a virtual machine with virt-install

1. Identify the device

   Identify the PCI device designated for device assignment to the guest virtual machine.

   # lspci | grep Ethernet
   00:19.0 Ethernet controller: Intel Corporation 82567LM-2 Gigabit Network Connection
   01:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
   01:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)

   The virsh nodedev-list command lists all devices attached to the system, and identifies each PCI device with a string. To limit output to only PCI devices, run the following command:

   # virsh nodedev-list --cap pci
   pci_0000_00_00_0
   pci_0000_00_01_0
   pci_0000_00_03_0
   pci_0000_00_07_0
   pci_0000_00_10_0
   pci_0000_00_10_1
   pci_0000_00_14_0
   pci_0000_00_14_1
   pci_0000_00_14_2
   pci_0000_00_14_3
   pci_0000_00_19_0
   pci_0000_00_1a_0
   pci_0000_00_1a_1
   pci_0000_00_1a_2
   pci_0000_00_1a_7
   pci_0000_00_1b_0
   pci_0000_00_1c_0
   pci_0000_00_1c_1
   pci_0000_00_1c_4
   pci_0000_00_1d_0
   pci_0000_00_1d_1
   pci_0000_00_1d_2
   pci_0000_00_1d_7
   pci_0000_00_1e_0
   pci_0000_00_1f_0
   pci_0000_00_1f_2
   pci_0000_00_1f_3
   pci_0000_01_00_0
   pci_0000_01_00_1
   pci_0000_02_00_0
   pci_0000_02_00_1
   pci_0000_06_00_0
   pci_0000_07_02_0
   pci_0000_07_03_0

   Record the PCI device number; the number is needed in other steps.
   Information on the domain, bus and function are available from output of the virsh nodedev-dumpxml command:

   # virsh nodedev-dumpxml pci_0000_01_00_0
   <device>
     <name>pci_0000_01_00_0</name>
     <parent>pci_0000_00_01_0</parent>
     <driver>
       <name>igb</name>
     </driver>
     <capability type='pci'>
       <domain>0</domain>
       <bus>1</bus>
       <slot>0</slot>
       <function>0</function>
       <product id='0x10c9'>82576 Gigabit Network Connection</product>
       <vendor id='0x8086'>Intel Corporation</vendor>
       <capability type='virt_functions'>
       </capability>
     </capability>
   </device>

2. Add the device

   Use the PCI identifier output from the virsh nodedev command as the value for the --host-device parameter.

   virt-install \
   --name=guest1-rhel6-64 \
   --disk path=/var/lib/libvirt/images/guest1-rhel6-64.img,size=8 \
   --nonsparse --graphics spice \
   --vcpus=2 --ram=2048 \
   --location=http://example1.com/installation_tree/RHEL6.1-Server-x86_64/os \
   --nonetworks \
   --os-type=linux \
   --os-variant=rhel6 \
   --host-device=pci_0000_01_00_0

3. Complete the installation

   Complete the guest installation. The PCI device should be attached to the guest.