Most of them areoutdated, but provide historical design context.
They arenotuser documentation and should not be treated as such.
Documentation is available here.
Automatic installation of Windows drivers
The feature simplifies the installation of MS Windows on a VM when virtio disk
and network drivers are used. oVirt provides a floppy with file
Autounattend.xml which tells the installer where to find the necessary virtio
The process of installing VM with MS Windows is complicated by the lack of virtio drivers on the installation media. If the user wants to use virtio disk and network during installation – which is suggested because of significant speed improvement – he has to perform some preparatory steps. The user has to manually load the virtio storage drivers and possibly also virtio network drivers from the floppy disk in the initial phase of installation. This process puts unnecessary burden on the user.
The installation process of MS Windows can be automated by providing removable
media containing file called
Autounattend.xml. The XML file allows automation
of many aspects of the installation. From answers to dialog questions to disk
partitioning to completely unattended installation.
In case of this feature we use it to tell Windows where it can find the necessary drivers. The installer will then load the drivers automatically and also installs them to the target OS. That way they are available during the installation as well as on the first boot of the new system.
How to use the feature
TBA (UX design is still in progress)
First osinfo database will be modified to contain the directory with the
drivers. By default, the directories correspond to the paths as seen on the
Second, the auto-install floppy is created on the fly just before the VM is
started. The floppy image specified in Run Once dialog is copied to the
payload directory on VDSM and
Autounattend.xml is injected onto it. The
Autounattend.xml is created from the template by replacing the path to the
drivers from osinfo. We cannot use single XML file because of bugs in drivers
loading code in Windows.