On Fri, Jan 7, 2022 at 4:31 PM Richard W.M. Jones <[email protected]> wrote:

> On Fri, Jan 07, 2022 at 09:01:35AM +0100, Laszlo Ersek wrote:
> > On 01/05/22 14:56, Richard W.M. Jones wrote:
> > > On Wed, Jan 05, 2022 at 01:46:08PM +0100, Tobias Soppa wrote:
> > >> Dear Richard,
> > >>
> > >> Sorry for bothering, but I didn't find another way to ask a question.
> > >>
> > >> Maybe you can point me to a chat or forum to receive support? I am not
> > >> sure whether I should use the libguestfs mailing list to send my
> > >> problem it to everyone?
> > >
> > > You can send any questions to [email protected] (without
> > > needing to subscribe).  Or we're on IRC #guestfs on Libera.
> > >
> > >> For days I'm trying to boot from virt-p2v-make-disk made USB
> thumbdrive
> > >> but was never able to boot from it.
> > >>
> > >> I did produce several images in different ways and with different
> Linux
> > >> distributions, but the thumb drive is never bootable - not on a
> > >> physical machine, nor via Ventoy.
> > >>
> > >> It works in QEMU though, but I need it running on a physical machine.
> I
> > >> need to use (Secure) UEFI for booting and this works with any other
> > >> disk image.
> > >
> > > Probably UEFI is the problem here - in fact I doubt somehow that
> > > we support it at all.
> >
> > The statement "works in QEMU" is unclear. If the QEMU guest in question
> > uses OVMF, then both cases (virt and phys) wouldn't differ with regard
> > to firmware type.
> >
> > Secure Boot could be an issue too, yes; dependent on how the virt-p2v
> > UEFI bootloader is signed.
> >
> > > Is it possible to turn it off and/or use the CMS module?
> >
> > (*CSM -- compatibility support module)
> >
> > It could be a workaround, yes.
> >
> > >
> > >> Maybe because these discs are delivered with ISO filesystem and not as
> > >> .IMG images? I feel I terribly miss something here.
> > >
> > > We probably ought to deliver P2V as a UEFI binary, one day.
> >
> > I've not delved into virt-p2v yet, but given that it uses GTK, it's
> > exceedingly unlikely that it can be built as a firmware-level binary
> > (such as "grub"), considering either UEFI or traditional BIOS.
> >
> > The virt-p2v binary is an "ELF 64-bit LSB executable, x86-64, version 1
> > (SYSV), dynamically linked (uses shared libs)", so I think what we'd
> > actually do is: create a UEFI-bootable Linux image on the USB disk, and
> > continue using virt-p2v the same way -- once virt-p2v starts (as a Linux
> > process), the host firmware shouldn't matter.
>
> Right, that's what I meant to say :-)
>
> Rich.
>
> > If this is important, we should likely have an RFE (RHBZ) about it.
>

RFE bug has been created based on the discussion:
https://bugzilla.redhat.com/show_bug.cgi?id=2038105


> >
> > Thanks!
> > Laszlo
>
> --
> Richard Jones, Virtualization Group, Red Hat
> http://people.redhat.com/~rjones
> Read my programming and virtualization blog: http://rwmj.wordpress.com
> libguestfs lets you edit virtual machines.  Supports shell scripting,
> bindings from many languages.  http://libguestfs.org
>
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