GNU bug report logs - #36942
Reconfigure broke GRUB

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From: zerodaysfordays <at> sdf.lonestar.org (Jakob L. Kreuze)
To: ison <ison <at> airmail.cc>
Cc: 36942 <at> debbugs.gnu.org
Subject: bug#36942: Reconfigure broke GRUB
Date: Wed, 14 Aug 2019 15:50:00 -0400

[Message part 1 (text/plain, inline)]

Hi ison,

ison <ison <at> airmail.cc> writes:

> On Wed, Aug 07, 2019, Jakob L. Kreuze wrote:
>> I'll continue to investigate; perhaps I'll be able to reproduce if I
>> copy your exact partition scheme in the virtual machine. I'm sorry that
>> you had to go through that whole 'guix init' spiel again.
>
> No problem, it's a backup machine anyway, I've held off on updating
> my main (but it doesn't use efi so maybe I can). If this is a
> problem that only I'm having and nobody else then I wonder if a
> fresh install would fix it. Although I'm surprised nobody else seems to be experiencing it.
>
> The only unusual thing I did before it broke is that I tried to consolidate my configs from 2 machines into a single one by adding case statements.
> For example at the top I had (define local-profile 'laptop)
> and then my bootloader was something like:
> (bootloader (bootloader-configuration
>              (case local-profile
>               ((desktop)
>                (bootloader grub-bootloader)
>                ...)
>               ((laptop)
>                (bootloader grub-efi-bootloader)
>                ...))))
>
> But I've since reverted back to my old config for all the subsequent
> "guix init" and reconfigures I've done, so it seems unlikely to be the
> cause but I thought I'd mention it anyway.
> Maybe having a BIOS boot partition on /dev/sda1 even though I'm using
> efi is somehow messing it up?

After some further research, I was able to create a virtual machine with
the partition scheme and bootloader configuration that you described.

[config.scm (text/plain, inline)]

;; This is an operating system configuration template
;; for a "bare bones" setup, with no X11 display server.

(use-modules (gnu))
(use-service-modules networking ssh)
(use-package-modules screen)

(operating-system
  (host-name "komputilo")
  (timezone "Europe/Berlin")
  (locale "en_US.utf8")

  ;; Boot in "legacy" BIOS mode, assuming /dev/sdX is the
  ;; target hard disk, and "my-root" is the label of the target
  ;; root file system.
  (bootloader (bootloader-configuration
                (bootloader grub-efi-bootloader)
                (target "/boot/efi")))
  (file-systems (cons* (file-system
                         (device "/dev/sda2")
                         (mount-point "/boot/efi")
                         (type "vfat"))
                       (file-system
                         (device (file-system-label "my-root"))
                         (mount-point "/")
                         (type "ext4"))
                       %base-file-systems))

  ;; This is where user accounts are specified.  The "root"
  ;; account is implicit, and is initially created with the
  ;; empty password.
  (users (cons (user-account
                (name "alice")
                (comment "Bob's sister")
                (group "users")

                ;; Adding the account to the "wheel" group
                ;; makes it a sudoer.  Adding it to "audio"
                ;; and "video" allows the user to play sound
                ;; and access the webcam.
                (supplementary-groups '("wheel"
                                        "audio" "video")))
               %base-user-accounts))

  ;; Globally-installed packages.
  (packages (cons screen %base-packages))

  ;; Add services to the baseline: a DHCP client and
  ;; an SSH server.
  (services (append (list (service dhcp-client-service-type)
                          (service openssh-service-type
                                   (openssh-configuration
                                    (port-number 2222))))
                    %base-services)))

[Message part 3 (text/plain, inline)]

However, I still cannot seem to reproduce this issue with the most
recent master. Everything boots fine. I've extracted the bootloader
installation "script", and everything appears to be normal to me.

[nk2c133gw3kn26bcafyx9flkwqwb5450-install-bootloader.scm (text/plain, inline)]

(begin
  (use-modules (gnu build bootloader)
               (gnu build install)
               (guix build utils)
               (guix store)
               (guix utils)
               (ice-9 binary-ports)
               (srfi srfi-34)
               (srfi srfi-35))
  (let* ((gc-root (string-append "/" %gc-roots-directory "/bootcfg"))
         (temp-gc-root (string-append gc-root ".new")))
    (switch-symlinks temp-gc-root "/gnu/store/xlb81742i5sb4cdmidfhabprc17ijwck-grub.cfg")
    (install-boot-config "/gnu/store/xlb81742i5sb4cdmidfhabprc17ijwck-grub.cfg" "/boot/grub/grub.cfg" "/")
    (when #t
      (catch #t
        (lambda ()
          ((lambda (bootloader efi-dir mount-point)
             (let ((grub-install (string-append bootloader "/sbin/grub-install"))
                   (install-dir (string-append mount-point "/boot"))
                   (target-esp (if (file-exists? (string-append mount-point efi-dir))
                                   (string-append mount-point efi-dir)
                                   efi-dir)))
               (setenv "GRUB_ENABLE_CRYPTODISK" "y")
               (invoke/quiet grub-install "--boot-directory" install-dir "--bootloader-id=Guix" "--efi-directory" target-esp)))
           "/gnu/store/8hbf54vl9hfgbnfigbqcf0di1agajr88-grub-efi-2.04" "/boot/efi" "/"))
        (lambda args
          (delete-file temp-gc-root)
          (apply throw args))))
    (rename-file temp-gc-root gc-root)))

[Message part 5 (text/plain, inline)]

To the rest of guix -- I would really appreciate some help here. I'm not
sure what else I can do for working on this bug report.

Regards,
Jakob

[signature.asc (application/pgp-signature, inline)]

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