[ovirt-users] oVirt 3.5 on RHEL 6.6 hyperv enabled breaks Windows VMs

[Charles Gruener]

The three Windows VMs I tried were Windows 7, Windows 8.1, and Windows
Server 2012 R2.  All experienced the stop error.

On Mon, Oct 27, 2014 at 8:21 AM, Michal Skrivanek <
michal.skrivanek at redhat.com> wrote:

>
> On 24 Oct 2014, at 18:43, Markus Stockhausen wrote:
>
> Hi,
>
> we are running the hyperv flags since months in our Win7 VMs without any
> issue. As we are still on OVirt 3.4 FC20 infrastructure we set them with
> hooks (and really depend on them).
>
> Maybe RHEL related?
>
> It might be. What's running on your host?
>
> Did you see the same problem with anything newer than Windows XP?
>
> Thanks,
> michal
>
> Markus
> Am 24.10.2014 18:22 schrieb Charles Gruener <cgruener at gruener.us>:
>   https://bugzilla.redhat.com/show_bug.cgi?id=1110305
>
>  This enabled the hv_relaxed flag on all my Windows VMs, causing them to
> no longer boot.  The same thing would happen if I simply booted from the
> Windows install media.  I would get a screen with a stop error:
>
>  Your PC needs to restart.
> Please hold down the power button.
> Error Code: 0x0000001E
> Parameters:
> 0xFFFFFFFFC0000096
> 0xFFFFF802C4044EA4
> 0x00000000000000000
> 0x00000000000000000
>
>  I created a file called
> /etc/ovirt-engine/osinfo.conf.d/01-windows.properties that had one line:
>
>  os.windows_xp.devices.hyperv.enabled.value = false
>
>  I restarted ovirt-engine and now I can start my Windows VMs.
>
>  Why does this occur?  Is it because I upgraded from 3.4 to 3.5?  Is
> there something else I'm doing wrong?  I would like to not need this
> workaround.  Thanks.
>
>  Charles
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