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Groups > linux.debian.kernel > #92331

Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images

Cross-posted to 2 groups.

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On Wed, 2026-05-06 at 12:26 +0200, Johannes Schauer Marin Rodrigues
wrote:
> Hi,
> 
> On Mon, 13 Apr 2026 07:27:33 +0200 Michael Prokop <mika@debian.org> wrote:
> > * Christian Kastner [Sat Apr 11, 2026 at 09:41:55AM +0200]:
> > > On 2026-04-10 23:59, Benjamin Drung wrote:
> > > > On Wed, 2026-04-08 at 12:45 +0200, Benjamin Drung wrote:
> > > > > On Wed, 2026-04-08 at 12:06 +0200, Chris Hofstaedtler wrote:
> > 
> > > > > > IMO detection of the chroot is a good approach. We already have
> > > > > > various software pieces that behave differently when they detect a
> > > > > > chroot (systemctl, glibc postinst, etc).
> > > > > > 
> > > > > > I think this would also help users that run in a rescue environment,
> > > > > > as (per my limited understanding), hostonly would also likely
> > > > > > produce something that won't boot.
> > 
> > > > The discussed solution in dracut:
> > > > https://github.com/dracut-ng/dracut-ng/pull/2369
> > > > 
> > > > In case this patch is applied in dracut, autopkgtest-build-qemu should
> > > > set this environment variable during the build:
> > > > 
> > > > DRACUT_EXTRA_ARGS=--no-hostonly
> > 
> > > While an option, I'm not entirely sure if autopkgtest is the correct
> > > place to do this. The actual image build happens through the lower-level
> > > vmdb2, so fixing the problem generally would probably require fixing it
> > > in vmdb2.
> > > 
> > > Looping the autopkgtest and vmdb2 maintainers in, in case they see this
> > > differently.
> > 
> > I'd like to highlight and echo Chris' (Hofstaedtler) comment:
> > 
> > > As I wrote earlier, I believe this is non-ideal. Each image builder
> > > will have to learn it, and each image builder will do something
> > > different. You'll end up with various configurations in the wild
> > > that you don't know that they exist.
> > 
> > *Please* let's avoid a solution for which every single image
> > builder tool needs to special case things.
> > 
> > (Speaking with my hat as author of grml-debootstrap (which exists
> > since 2006) and project lead of the Grml rescue live system, and
> > being a previous contributor and maintainer of initramfs-tools.
> > Please don't think about autopkgtest + vmdb2 only, there are *many* image
> > builder tools around.)
> 
> I would like to add another "me too" to what ch and mika said. I am maintaining
> quite a few "image builders" and just ran into this problem with one of them.
> This used to work automatically before dracut came along. It can thus evidently
> be solved automatically. It is an anti-feature to now make all image builders
> set another environment variable just so that dracut is happy.  As ch pointed
> out, this means that I also have to backport such a change to earlier versions
> of Debian so that Debian stable or oldstable is able to create a dracut image
> for testing and unstable. Please fix this problem in one place (in dracut)
> instead of forcing a lot of maintainers to do busy-work.

Can you give me psaudo-code or logic how to determine when dracut should
default to build a generic initrd and when it can build a host-only
initrd?

-- 
Benjamin Drung
Debian & Ubuntu Developer

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Thread

Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Benjamin Drung <bdrung@debian.org> - 2026-04-07 11:50 +0200
  Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Benjamin Drung <bdrung@debian.org> - 2026-04-07 12:10 +0200
    Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Benjamin Drung <bdrung@debian.org> - 2026-04-07 13:20 +0200
      Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Benjamin Drung <bdrung@debian.org> - 2026-04-07 13:30 +0200
        Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Benjamin Drung <bdrung@debian.org> - 2026-04-08 11:50 +0200
          Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Chris Hofstaedtler <zeha@debian.org> - 2026-04-08 12:10 +0200
            Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Benjamin Drung <bdrung@debian.org> - 2026-04-08 12:50 +0200
              Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Benjamin Drung <bdrung@debian.org> - 2026-04-11 00:10 +0200
                Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Michael Prokop <mika@debian.org> - 2026-04-13 07:30 +0200
                Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Benjamin Drung <bdrung@debian.org> - 2026-04-13 23:00 +0200
                Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Johannes Schauer Marin Rodrigues <josch@debian.org> - 2026-05-06 12:30 +0200
                Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Benjamin Drung <bdrung@debian.org> - 2026-05-06 14:20 +0200
                Bug#1132794: dracut 110-8 breaks autopkgtest EFI boot images Johannes Schauer Marin Rodrigues <josch@debian.org> - 2026-05-06 16:10 +0200

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