20.18. Converting QEMU Arguments to Domain XML

Procedure 20.3. How to convert a QEMU guest to libvirt

1. Start with a QEMU guest with a arguments file (file type *.args), named demo.args in this example:

   $ cat demo.args
   LC_ALL=C
   PATH=/bin
   HOME=/home/test
   USER=test
   LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -no-acpi -boot c -hda /dev/HostVG/QEMUGuest1 -net none -serial none -parallel none -usb
   

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2. To convert this file into a domain XML file so that the guest can be managed by libvirt, enter the following command. Remember to replace qemu-guest1 with the name of your guest virtual machine and demo.args with the filename of your QEMU args file.

   # virsh domxml-from-native qemu-guest1 demo.argsvirsh domxml-from-native qemu-guest1 demo.argsvirsh domxml-from-native qemu-guest1 demo.argsvirsh domxml-from-native qemu-guest1 demo.args

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   This command turns the demo.args file into the following domain XML file:

   <domain type='qemu'>
     <uuid>00000000-0000-0000-0000-000000000000</uuid>
     <memory>219136</memory>
     <currentMemory>219136</currentMemory>
     <vcpu>1</vcpu>
     <os>
       <type arch='i686' machine='pc'>hvm</type>
       <boot dev='hd'/>
     </os>
     <clock offset='utc'/>
     <on_poweroff>destroy</on_poweroff>
     <on_reboot>restart</on_reboot>
     <on_crash>destroy</on_crash>
     <devices>
       <emulator>/usr/bin/qemu</emulator>
       <disk type='block' device='disk'>
         <source dev='/dev/HostVG/QEMUGuest1'/>
         <target dev='hda' bus='ide'/>
       </disk>
     </devices>
   </domain>

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   Figure 20.1. Guest virtual machine new configuration file