[CentOS-virt] win2008r2 update on centos 6 host made system unbootable

Wed Dec 9 09:35:15 UTC 2015
Nux! <nux at li.nux.ro>

Confirmed! :-(

Installing the SUSE Network and Storage drivers from the Optional Updates renders the OS unbootable.

http://img.nux.ro/xR4-Screenshot.png

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

----- Original Message -----
> From: "Nux!" <nux at li.nux.ro>
> To: "Discussion about the virtualization on CentOS" <centos-virt at centos.org>
> Sent: Wednesday, 9 December, 2015 09:04:26
> Subject: Re: [CentOS-virt] win2008r2 update on centos 6 host made system unbootable

> This is pretty epic if true.
> I'm installing some Fail 2008r2 now to check.
> 
> Is your hypervisor running CentOS 6 or 7?
> 
> --
> Sent from the Delta quadrant using Borg technology!
> 
> Nux!
> www.nux.ro
> 
> ----- Original Message -----
>> From: "Dennis Jacobfeuerborn" <dennisml at conversis.de>
>> To: "Discussion about the virtualization on CentOS" <centos-virt at centos.org>
>> Sent: Wednesday, 9 December, 2015 00:00:28
>> Subject: Re: [CentOS-virt] win2008r2 update on centos 6 host made system
>> unbootable
> 
>> On 09.12.2015 00:39, NightLightHosts Admin wrote:
>>> On Tue, Dec 8, 2015 at 5:26 PM, Dennis Jacobfeuerborn
>>> <dennisml at conversis.de> wrote:
>>>> Hi,
>>>> today we ran into a strange problem: When performing a regular Windows
>>>> 2008r2 update apparently among other things the following was installed:
>>>> "SUSE - Storage Controller - SUSE Block Driver for Windows"
>>>>
>>>> Previously the disk drive was using the Red Hat virtio drivers which
>>>> worked just fine but after the reboot after the update I just get a blue
>>>> screen indicating that Windows cannot find a boot device.
>>>>
>>>> Does anyone understand what is going on here? Why is the windows update
>>>> installing a Suse driver that overrides the Red Hat driver even though
>>>> it is apparently incompatible with the system?
>>>>
>>>> Regards,
>>>>   Dennis
>>> 
>>> Did you roll back the driver and did it work after that?
>> 
>> I can't roll back the driver for that device because I can't boot the
>> system. The only way I can boot into the system is by changing the disk
>> type to IDE but then I cannot roll back the driver because the entire
>> device changed. As far as I can tell the Suse version of the virtio
>> block driver is incompatible with the incompatible with the system but
>> right now I see no way to tell windows "Uninstall the driver completely
>> for the entire system" so that on the next boot it would fall back to
>> the old virtio driver from Red Hat.
>> I tried installing the current stable drivers from this URL:
>> https://fedoraproject.org/wiki/Windows_Virtio_Drivers
>> 
>> But Windows refuses and says the driver is already up-to-date.
>> 
>> What worries me is that I want to update other win2008r2 guests as well
>> but now fear that they will all be rendered unbootable by such an update.
>> 
>> Regards,
>>  Dennis
>> 
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