Re: Half a success with chroot

[Thorsten Wilms]

On 12.03.2018 23:29, Gábor Boskovits wrote:
> Could you please check, if the solution mentioned here works for you:
> https://bugzilla.redhat.com/show_bug.cgi?id=1361043
>
> A short summary: Similar error can be caused by shared mounts.
>
> This way you can check if this applies.
>
> Note 'shared' in the output:
>
> grep -iP '/ /\s' /proc/$$/mountinfo
> ...
> 25 0 252:1 / / rw,relatime shared:1 - ext4 /dev/mapper/my--vg-root 
> rw,errors=remount-ro,data=ordered
> ...

$ grep -iP '/ /\s' /proc/$$/mountinfo
26 0 8:17 / / rw,relatime shared:1 - ext4 /dev/sdb1 
rw,errors=remount-ro,data=ordered


> This is usual in systemd systems, and Ubuntu is one of them.
>
> Calling unshare -m within the process context helps this.

I interpreted that to mean after the chroot, but:
---
$ sudo chroot /media/ssd-alt-system /run/current-system/profile/bin/bash
address@hidden /# source /etc/profile
address@hidden /# unshare -m
unshare: failed to execute /bin/bash: No such file or directory
---

However, combined with chroot, it works:
---
$ sudo unshare -m sudo chroot /media/ssd-alt-system 
/run/current-system/profile/bin/bash
address@hidden /# source /etc/profile
address@hidden /# guix-daemon --build-users-group=guixbuild &
[1] 5907
address@hidden /# su thorwil
address@hidden /$ source /etc/profile
address@hidden /$ guix package -i emacs-bash-completion
guile: warning: failed to install locale
warning: failed to install locale: Invalid argument
accepted connection from pid 5916, user thorwil
spurious SIGPOLL
spurious SIGPOLL
spurious SIGPOLL
The following package will be installed:
   emacs-bash-completion	2.0.0 
/gnu/store/7irxjifw4m8sj0if2nj0r26vf0n0imsj-emacs-bash-completion-2.0.0

substitute: guile: warning: failed to install locale
substitute: warning: failed to install locale: Invalid argument
spurious SIGPOLL
substitute: updating list of substitutes from 
'https://mirror.hydra.gnu.org'... 100.0%
The following derivations will be built:
   /gnu/store/gdihnrv0zykypajy7p94k9qzpmgqbkvz-profile.drv
   /gnu/store/xlyyh54y77nm8gzm81rckkcvzaihn7dh-fonts-dir.drv
   /gnu/store/pm80lbbbx2xhvnfb838zn90bwwcw2818-xdg-desktop-database.drv
   /gnu/store/nkcspwxnd7hmf144krxzv1clq4gch6ms-ca-certificate-bundle.drv
   /gnu/store/n72ahz242h07dz32g2fkpr308a6cwdb6-xdg-mime-database.drv
   /gnu/store/fw9k5rg7p6czcp4bnnqkr57gv1qcyg78-gtk-im-modules.drv
   /gnu/store/856smz8kn9l2gq2b6qcykv6aa06c3qv7-info-dir.drv
   /gnu/store/1bybb1dnry03qwkr2d2888xi2z0hb6y7-gtk-icon-themes.drv

/gnu/store/4vgn265kihmk1aayy3rg5h4z00dvlfmy-emacs-bash-completion-2.0.0.drv
   /gnu/store/gwlj87yvqfsrv6lzcphfm65ndwpar0df-manual-database.drv
grafting 
'/gnu/store/hfc5j4dq387s2iyvz392dja8zc75cvss-emacs-bash-completion-2.0.0' 
-> 
'/gnu/store/7irxjifw4m8sj0if2nj0r26vf0n0imsj-emacs-bash-completion-2.0.0'...
Creating manual page database...
32 entries processed in 0.2 s

warning: collision encountered:
/gnu/store/jfbf26368y3q897whlf8n5vina2scj82-gtk-icon-themes/share/icons/hicolor/icon-theme.cache
/gnu/store/wndka13848kxaxw2ymv7l4ajzi1abrbb-inkscape-0.92.2/share/icons/hicolor/icon-theme.cache
warning: arbitrarily choosing 
/gnu/store/jfbf26368y3q897whlf8n5vina2scj82-gtk-icon-themes/share/icons/hicolor/icon-theme.cache
44 packages in profile
address@hidden /$
---

There are still those "spurious SIGPOLL" and I don't think I saw 
"substitute: guile: warning: failed to install locale" when booted into 
Guix SD.


> I'm forwarding this also to devel, so that we can discuss, if doing this 
> is advisable in
> general. WDYT?

OK, I just subscribed to guix-devel.


--
Thorsten Wilms

thorwil's design for free software:
http://thorwil.wordpress.com/