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Re: [Xen-devel] 4.7 qemu regression: HVM guests fail to boot from xvda

On Tue, May 31, 2016 at 12:16 PM, Olaf Hering <olaf@xxxxxxxxx> wrote:
> On Tue, May 31, George Dunlap wrote:
>> On Mon, May 30, 2016 at 9:42 PM, Olaf Hering <olaf@xxxxxxxxx> wrote:
>> > With staging-4.6 this domU boots from xvda, qemu creates an emulated
>> > disk. With staging no disk is found, unless the name is changed to hda.
>> > Looks like qemu-2.6 does not handle xvda either.
>> This was intentional; see this thread:
>> https://marc.info/?i=<1444820717-25565-1-git-send-email-anthony.perard@xxxxxxxxxx>
>> The idea was to make it possible to create an HVM guest with no
>> emulated disks for guest booting with OVMF which contains PV drivers.
> This breaks the domU becasue it changes its device names from 'xvd' to
> 'hd' if a xenlinux based kernel is used in domU.
> In other words: every SUSE domU out there.

Sorry, can you expand on this a bit?  Are you saying that on SuSE, if
you specify "vdev=xvda" in your config file, that you'll get PV
devices named "/dev/xvda", but that if you specify "vdev=hda", that
you'll get PV devices but named "/dev/hda"?


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