> Given the scenario where the disks of a virtual server are defined in the
> following order
>
> harddisk hda
> harddisk vda
> cdrom vdb
> cdrom hdb
>
> Boot device type is crdom. Which cdrom device will be boot attempted?
> >From the above links, I'm guessing that hdb will be boot attempted. Is this
> the actual behavior?
That depends on BIOS implementation used by qemu and to be honest, I'm not
sure what the default behavior is; you would need to try that :-)
However, if you have new enough libvirt (>= 0.8.8), qemu and SeaBIOS (AFAIK
qemu >= 0.14.0 should be ok), you can better control boot order by using
per-device boot configuration. That is, instead of specifying
<os>
...
<boot dev='cdrom'/>
</os>
you would use something like
<devices>
...
<disk type='file' device='cdrom'>
...
<boot order='1'/>
</disk>
</devices>
It's also documented in libvirt XML documentation at
http://www.libvirt.org/formatdomain.html#elementsDisks
Jirka
