On Mon, Mar 15, 2021 at 04:43:20PM +0100, Tomáš Golembiovský wrote:
> On Mon, Mar 15, 2021 at 01:13:10PM +0000, Shantur Rathore wrote:
> > Hi all,
> >
> > I am doing some testing with GPU passthrough to VMs and in some cases the
> > OVMF stops booting after a GPU passthrough.
> > I have figured out that it's related to some state stored in NVRAM by OVMF
> > and as soon as I create another VM with the same disks it starts booting up.
> >
> > I believe oVirt saves the NVRAM state.
>
> No it isn't. Or, better said, it wasn't. Storing of NVRAM is a new
> feature in 4.4.5 and it will be enabled only for VMs with Secure Boot.
>
> So whatever you're experiencing is probably caused by something else.

Actually I hit "Send" too quickly. Are you experiencing the issue after
VM reboot or even after shutdown? Because NVRAM is kept between reboots
and is removed only after VM shutdown.

    Tomas

>
> >  Is there a way to clear NVRAM for a VM without deleting it?
>
> This is not part of the feature introduced in 4.4.5. But it would make
> sense to have it if we later extend the NVRAM storing to all VMs with
> UEFI. So despite what I wrote above it would be worth opening a feature
> request bug.
>
>     Tomas
>
> >
> > Regards,
> > Shantur
>
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>
> --
> Tomáš Golembiovský <tgolembi@redhat.com>

--
Tomáš Golembiovský <tgolembi@redhat.com>