[debbugs-tracker] bug#23697: closed (guix system reconfigure hangs, shows repl in messages)

[GNU bug Tracking System]

Your message dated Tue, 18 Dec 2018 16:39:04 +0100
with message-id <address@hidden>
and subject line Re: bug#23697: guix system reconfigure hangs, shows repl in 
messages
has caused the debbugs.gnu.org bug report #23697,
regarding guix system reconfigure hangs, shows repl in messages
to be marked as done.

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-- 
23697: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=23697
GNU Bug Tracking System
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--- Begin Message --- Subject: guix system reconfigure hangs, shows repl in messages Date: Sun, 05 Jun 2016 11:52:13 +0200

Hi,

Not sure this qualifies as a bug, sending per request.

As a preparation to move from Debian to GuixSD, I have been dual
booting between Debian and GuixSD.

Using Debian as my main system with this layout

    /dev/sda3 "debian" /
    /dev/sda1          /guix
    /dev/sda4          /home

I did

    guix system init drakenvlieg.scm /guix

see attached, and then booted into GuixSD.  GuixSD still using its own
/home on its sda1 root.

On GuixSD, I ran Gnome and mounted the home I had been using with Debian

    /dev/sda1 "guix"   /
    /dev/sda3 "debian" /debian
    /dev/sda4          /hoom    <--manual mount

I set $HOME /to /hoom/janneke and checked that some things like wifi,
fonts, ssh, gnus, openvpn, touchpad etc. worked good enough to switch
over.

Then, I uncommented the /home section in drakenvlieg.scm, like so

    ;; Switch to GuixSD
    (file-system (device "home")
                 (title 'label)
                 (mount-point "/home")
                 (type "ext4"))
    (file-system (device (label "Debian")) (title 'label) (mount-point 
"/debian") (type "ext4") (flags '(read-only)))

and (without considering I had mounted /hoom and set $HOME there) ran

    guix system reconfigure drakenvlieg.scm

which eventually printed

    ...
    guix system: loading new services: file-system-/home urandom-seed ntpd 
avahi-daemon ssh-daemon...
    shepherd: Evaluating user expression (register-services (primitive-load 
"/gn...") ...).

In /var/log/messages I found some clue as to why this did not return

    2016-06-01 19:55:20 Service root has been started.
    2016-06-01 19:55:20 starting services...
    2016-06-01 19:55:20 Service root-file-system has been started.
    2016-06-01 19:55:20 waiting for udevd...
    2016-06-01 19:55:23 Service udev has been started.
    2016-06-01 19:55:23 Service swap-/dev/sda2 has been started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup has been started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/hugetlb has been 
started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/perf_event has been 
started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/blkio has been 
started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/freezer has been 
started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/devices has been 
started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/memory has been 
started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/cpuacct has been 
started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/cpu has been started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/cpuset has been 
started.
    2016-06-01 19:55:23 Service file-system-/sys/fs/cgroup/elogind has been 
started.
    2016-06-01 19:55:23 Service file-system-/run/user has been started.
    2016-06-01 19:55:23 Service file-system-/run/systemd has been started.
    2016-06-01 19:55:23 Service file-system-/gnu/store has been started.
    2016-06-01 19:55:23 Service file-system-/dev/shm has been started.
    2016-06-01 19:55:23 Service file-system-/dev/pts has been started.
    2016-06-01 19:55:23 Service user-file-systems has been started.
    2016-06-01 19:55:23 Service user-processes has been started.
    2016-06-01 19:55:23 Service host-name has been started.
    2016-06-01 19:55:23 Service nscd has been started.
    2016-06-01 19:55:23 Service guix-daemon has been started.
    2016-06-01 19:55:23 Service syslogd has been started.
    2016-06-01 19:55:23 Service loopback has been started.
    2016-06-01 19:55:23 Service term-tty6 has been started.
    2016-06-01 19:55:23 Service term-tty5 has been started.
    2016-06-01 19:55:23 Service term-tty4 has been started.
    2016-06-01 19:55:23 Service term-tty3 has been started.
    2016-06-01 19:55:23 Service term-tty2 has been started.
    2016-06-01 19:55:23 Service term-tty1 has been started.
    2016-06-01 19:55:23 Service console-font-tty6 has been started.
    2016-06-01 19:55:23 Service console-font-tty5 has been started.
    2016-06-01 19:55:23 Service console-font-tty4 has been started.
    2016-06-01 19:55:23 Service console-font-tty3 has been started.
    2016-06-01 19:55:23 Service console-font-tty2 has been started.
    2016-06-01 19:55:23 Service console-font-tty1 has been started.
    2016-06-01 19:55:23 Service dbus-system has been started.
    2016-06-01 19:55:23 Service networking has been started.
    2016-06-01 19:55:23 Service ntpd has been started.
    2016-06-01 19:55:23 Service upower-daemon has been started.
    2016-06-01 19:55:23 Service avahi-daemon has been started.
    2016-06-01 19:55:23 Service xorg-server has been started.
    2016-06-01 19:55:23 Service postgres has been started.
    2016-06-01 19:55:23 Service ssh-daemon has been started.
    2016-06-01 19:55:23 Service console-keymap has been started.
    2016-06-01 19:55:23 Respawning upower-daemon.
    2016-06-01 19:55:23 Service upower-daemon has been started.
    2016-06-01 19:55:23 Respawning avahi-daemon.
    2016-06-01 19:55:23 Service avahi-daemon has been started.
    2016-06-01 19:59:57 Evaluating user expression (register-services 
(primitive-load "/gn...") #).
    2016-06-01 19:59:57 GNU Guile 2.0.11
    2016-06-01 19:59:57 Copyright (C) 1995-2014 Free Software Foundation, Inc.
    2016-06-01 19:59:57 
    2016-06-01 19:59:57 Guile comes with ABSOLUTELY NO WARRANTY; for details 
type `,show w'.
    2016-06-01 19:59:57 This program is free software, and you are welcome to 
redistribute it
    2016-06-01 19:59:57 under certain conditions; type `,show c' for details.
    2016-06-01 19:59:57 
    2016-06-01 19:59:57 Enter `,help' for help.

Greetings,
Jan

PS: I booted into Debian, did a new system init into /guix and am
    running GuixSD now.

drakenvlieg.scm
Description: Binary data

-- 
Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar®  http://AvatarAcademy.nl  

--- End Message ---

> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#23697: guix system reconfigure hangs, shows repl in messages
>
>
>
>
> Date: 
>
> Tue, 18 Dec 2018 16:39:04 +0100
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)
>
>
>
>
> Hello!
>
> address@hidden (Ludovic Courtès) skribis:
>
> > Jan Nieuwenhuizen <address@hidden> skribis:
>
> [...]
>
> >>     guix system reconfigure drakenvlieg.scm
> >>
> >> which eventually printed
> >>
> >>     ...
> >>     guix system: loading new services: file-system-/home urandom-seed ntpd 
> >> avahi-daemon ssh-daemon...
> >>     shepherd: Evaluating user expression (register-services (primitive-load 
> >> "/gn...") ...).
> >>
> >> In /var/log/messages I found some clue as to why this did not return
> >
> > [...]
> >
> >>     2016-06-01 19:59:57 Evaluating user expression (register-services 
> >> (primitive-load "/gn...") #).
> >>     2016-06-01 19:59:57 GNU Guile 2.0.11
> >>     2016-06-01 19:59:57 Copyright (C) 1995-2014 Free Software Foundation, 
> >> Inc.
> >>     2016-06-01 19:59:57 
> >>     2016-06-01 19:59:57 Guile comes with ABSOLUTELY NO WARRANTY; for details 
> >> type `,show w'.
> >>     2016-06-01 19:59:57 This program is free software, and you are welcome 
> >> to redistribute it
> >>     2016-06-01 19:59:57 under certain conditions; type `,show c' for details.
> >>     2016-06-01 19:59:57 
> >>     2016-06-01 19:59:57 Enter `,help' for help.
> >
> > What happens is that it failed to fsck /home (since it was already
> > mounted), and stupidly started a rescue REPL that you couldn’t see.
>
> A simple way to reproduce this is to run:
>
>   # herd eval root '(begin (use-modules (gnu build file-systems)) 
> (check-file-system "/dev/foo" "ext2"))'
>
> That command does not return because PID 1 is stuck in read(0, …), where
> stdin is connected to the console.  You can type “,q” in the console
> (usually tty1) and it should be fine.  Of course if you try this
> on a remote machine, you’re screwed…
>
> Anyway, commit 6ea6e1476ff4a18d4b4b864c3065d18ed99c69af fixes it, at last.
>
> Thanks,
> Ludo’.
>
>
> --- End Message ---