[Users] Unable to boot from CD-ROM (was: REST API: Change boot device / attach CD-ROM)

[Frank Wall]

On Thu, Jan 03, 2013 at 01:05:00PM +0100, Frank Wall wrote:
> <cdroms>
>     <cdrom href="/api/vms/VM-ID/cdroms/00000000-0000-0000-0000-000000000000" id="00000000-0000-0000-0000-000000000000">
>         <vm href="/api/vms/VM-ID" id="VM-ID"/>
>         <file id="FreeBSD-8.3-RELEASE-amd64-disc1.iso"/>
>     </cdrom>
> </cdroms>
> 
> ...and the boot device is also changed...
> 
>     [...]
>     <os type="unassigned">
>         <boot dev="cdrom"/>
>     </os>
>     [...]
> 
> ...but the VM won't boot off the CD-ROM device, instead it just
> boots from the first harddisk. So what am I doing wrong?

OK, the problem is still NOT solved, but I did some further 
investigation. First, the problem ONLY affects VMs with a bootable 
harddisk (and an operating system installed). 
A newly created VM is NOT affected and is able to boot from CD-ROM. 
Once I install an operating system, the VM will no longer be able 
to boot from CD-ROM. No matter what is configured as boot device...

There is still only the following workaround to boot from CD-ROM:

> The only way I am able to boot from CD-ROM is when using the 
> "Run once" function on the Admin Portal and configure the CD-ROM
> device/image there (temporarely overwriting my config).
> 
> It will NOT work if I configure the CD-ROM device through the REST
> API or the Admin Portal. Just "Run Once" will do the right thing.


Any idea how to debug this further and get a bugfix/working solution?

oVirt is running fine, except this annoying bug makes it somewhat
useless for us.


Thanks
- Frank