bug#57838: failing to boot, probably due to guix gc

[Attila Lendvai]

> > on one of my installs i ran the following two commands as root:
> > 
> > guix gc --delete-generations=60d
> > guix system delete-generations 60d
> > 
> > i think i ran a reboot pretty soon after this, and the machine is failing 
> > to boot with the error "no code for module (ice-9 popen)".
> 
> 
> How did you reboot? Maybe whatever rebooting mechanism you use doesn't
> do 'sync' first or doesn't wait for 'sync' to complete.


i'm pretty sure i have issued a `reboot` in an ssh session.


> To test the hypothesis that there is store corruption, could you do
> "guix gc --verify=contents" (assuming there are some old system
> generations you can boot from)?


as i have explained in an earlier mail, all my old generations (3 remained 
after the GC) got broken, but they all got repaired by a subsequent reconfigure 
from a chroot. it has probably installed some files that were missing.

# guix gc --verify=contents
reading the store...
checking path existence...
checking hashes...
#

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• attila lendvai
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bug#57838: failing to boot, probably due to guix gc

[Maxime Devos]

For these kind of errors, I think I've an idea what's the cause in 
.



On 15-09-2022 21:44, Attila Lendvai wrote:

dear Guixers,

on one of my installs i ran the following two commands as root:

guix gc --delete-generations=60d
guix system delete-generations 60d

i think i ran a reboot pretty soon after this, and the machine is failing to boot with 
the error "no code for module (ice-9 popen)".


How did you reboot?  Maybe whatever rebooting mechanism you use doesn't 
do 'sync' first or doesn't wait for 'sync' to complete.


To test the hypothesis that there is store corruption, could you do 
"guix gc --verify=contents" (assuming there are some old system 
generations you can boot from)?


Greetings,
Maxime.


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bug#57838: failing to boot, probably due to guix gc

[Attila Lendvai]

dear Guixers,

on one of my installs i ran the following two commands as root:

guix gc --delete-generations=60d
guix system delete-generations 60d

i think i ran a reboot pretty soon after this, and the machine is failing to 
boot with the error "no code for module (ice-9 popen)".

i'm attaching a photo of the kernel panic screen.

the delete-generations left 3 generations, but all the three fail the same way.

i'll keep the machine as-is for a while if some inspection would help by 
providing logs/data. i also want to fix it and have it running soonish, so let 
me know if there's anything valuable i should extract from it before attempting 
to fix it. i hope a chroot and a reconfigure will fix it.

i think i ran the commands multiple times with different time ranges, and in 
different order.

i did something similar on another install, but IIRC i also ran a `guix system 
reconfigure` prior to the reboot, and that install didn't break.

HTH,

-- 
• attila lendvai
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