On Jul 11, 2017 4:09 PM, "Sam Varshavchik" <mrsam@courier-mta.com> wrote:
Patrick O'Callaghan writes:

On Tue, 2017-07-11 at 13:21 -0400, Sam Varshavchik wrote:
> Upgraded F25 that had a Win10 guest VM to F26.
>
> When the VM got started, the initial logo and the spinning circle came up,
> but then the display cleared to what appears to be the VGA 648x480
> resolution, with gray vertical lines and something else.
>
> After a few minutes of this I force-rebooted the VM. Windows 10 went into
> "Automatic Repair", then gave up, reporting some corrupted file. It didn't
> find any restore points either.
>
> So, I'm now reinstalling it from a recovery disk. I have no idea if the
> restored image will come up…

Anything further on this? I expect to update to F26 tomorrow and also
have a Win10 VM under QEMU/KVM. I'll backup the VM (from Windows) and
probably take a QCOW snapshot of the virtual disk just in case, but I'd
be interested to know if:

* You're running X11 or Wayland
* Your virtual display is QXL, passthrough of a second GPU, or
something else
* You use VNC or Spice

QXL, X11, Spice.

I was able to reinstall Windows 10 on the same VM, and isolated one clue. A VM-initiated reboot always fails, goes into "Preparing Automatic Repair", then bluescreens and tells me that something is corrupted (I forget the details), and there are no available restore points.

But this is a bald-faced lie. But if I force off, and boot again, Windows 10 comes up like there's nothing wrong. Normal boot.

This continued to happen after a fresh Windows 10 install. If I initiate a reboot from the Start menu, I don't even see the bios screen flash by. The stupid thing immediately lands into "Preparing Automatic Repair". But a full shutdown and a boot is fine.

In hindsight, post-upgrade, my VM was probably ok, but it led me to believe that it was bricked, leading me to wipe everything and reinstall. It was very convincing. I am not amused.

At least I tested how well the recovery USB thumb drive, that I prepared earlier has worked. It worked splendidly.

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Oh wow, Im also running s win10 client under qemu. This kind of behavior is not good.