Re: grub finding deployment

[Damian Ivanov <damianatorrpm gmail com>]

Hello Ryan,

Thanks for the response!

the grub2-mkconfig generated output does include ### BEGIN /etc/grub.d/15_ostree
so that is used to set up the grub.cfg file so grub2-mkconfig is the way to go.

But still the problem remains, the kernel line has 3 arguments - the
kernel, the root UUID and the ostree argument
linux16 /ostree/$deployment/vmlinuz-5.3.14-300.fc31.x86_64
ostree=/ostree/boot.1/$os/$deployment/1 root=UUID=$uuid

the subdirectory /ostree of the root filesystem has no such file
/ostree/$deployment/vmlinuz-5.3.14-300.fc31.x86_64
since that is in /boot/ostree/$deployment/vmlinuz-5.3.14-300.fc31.x86_64

on anaconda installed silverblue it is also like this but grub does not complain
when I do a manual deployment though grub complains that kernel must
be loaded first (was not found)
changing kernel and initrd lines to prepend /boot boots the system fine

What special command made this possible?
Do you have to invoke  grub2-switch-to-blscfg ?

Best Regards,
Damian

On Thu, Dec 12, 2019 at 7:09 AM Ryan <rymg19 gmail com> wrote:
> The file that calls the grub generator from OSTree is /etc/grub.d/15_ostree, and the code where the 
> assertion failure occurs is line 172 of this file: 
> https://github.com/ostreedev/ostree/blob/d69214ade3d5b187ebfbb791d7cfb36155c4f8dd/src/libostree/ostree-bootloader-grub2.c
>
> It's basically reading some environment variables set by the grub generator script. In general, you should 
> not interface with these commands manually and instead run grub2-mkconfig as usual.
>
> On Wed, Dec 11, 2019, 12:30 PM Damian Ivanov via ostree-list <ostree-list gnome org> wrote:
> > Hello!
> >
> > What makes grub read the ostree argument and apply that as search
> > directory for the kernel directory and initrd as well?
> >
> > I got a deployment from desktop installation (the ostree repo) to usb stick.
> > Grub works not 100% properly (installed via grub2-install since:)
> >
> > bootver=$(readlink $NEW_SYSROOT/boot/loader)
> > _OSTREE_GRUB2_BOOTVERSION=${bootver#*.} ostree admin instutil grub2-generate
> >
> > grub2.c:172:_ostree_bootloader_grub2_generate_config: assertion
> > failed: (grub2_boot_device_id != NULL)
> > from inside and outside (--sysroot /mnt/sysroot) the chroot with and
> > without the bootver variable
> >
> > grub shows up and has this argument
> > ostree=/ostree/boot.1/$os/$deployment/1
> >
> > although when trying to boot the entry it complains that it can not
> > find the kernel which must be loaded first and is not in that
> > directory below:
> >
> > changing:
> >
> > linux16 /ostree/$deployment/vmlinuz-5.3.14-300.fc31.x86_64
> > initrd16 /ostree/$deployment/initramfs-5.3.14-300.fc31.x86_64.img
> >
> > to:
> >
> > linux16 /boot/ostree/$deployment/vmlinuz-5.3.14-300.fc31.x86_64
> > initrd16 /boot/ostree/$deployment/initramfs-5.3.14-300.fc31.x86_64.img
> >
> > and leaving the ostree= kernel arg intact boots it up though
> >
> >
> > Thanks in advance!
> > Regards,
> > Damian
> > _______________________________________________
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> > ostree-list gnome org
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