vm_0.xml

<domain type="kvm">
  <name>ubuntu-vm-0</name>
  <memory unit="KiB">2097152</memory>
  <currentMemory unit="KiB">2097152</currentMemory>
  <vcpu>2</vcpu>
  <os>
    <type arch="x86_64" machine="pc">hvm</type>
    <boot dev="hd" />
    <boot dev="cdrom" />
  </os>
  <clock offset="utc" />
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
  <disk device="disk" type="file">
       <driver name="qemu" type="qcow2" />
       <source file="/gos_images/ubuntu_0.qcow2" />
       <target bus="virtio" dev="vda" />
  </disk>
  <interface type="bridge">
    <source bridge="virbr0" />
    <model type="virtio" />
  </interface>
  <serial type="pty">
    <target port="0" />
  </serial>
  <console type="pty">
    <target port="0" type="serial" />
  </console>
  <hostdev managed="yes" mode="subsystem" type="pci">
      <source>
        <address bus="0x00" domain="0x0000" function="0x0" slot="0x02" />
      </source>
  </hostdev>
  <hostdev mode="subsystem" type="usb">
      <source>
        <vendor id="0x14dd" />
        <product id="0x1007" />
      </source>
  </hostdev>
  <filesystem accessmode="squash" type="mount">
    <driver type="path" />
    <source dir="/home/wlc/libvirt" />
    <target dir="mytag" />
    </filesystem>
    <channel type="unix">
    <source mode="bind" path="/var/lib/libvirt/qemu/f16x86_64.agent" />
    <target name="org.qemu.guest_agent.0" state="connected" type="virtio" />
  </channel>
  </devices>
</domain>