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From: Felix Lechner via "Development of GNU Guix and the GNU System distribution." <guix-devel@gnu.org>
To: maya@zenmaya.xyz, guix-devel@gnu.org
Subject: Re: Debugging failing shepherd startup
Date: Fri, 21 Jun 2024 13:32:12 -0700	[thread overview]
Message-ID: <87y16yghpv.fsf@lease-up.com> (raw)
In-Reply-To: <87a5je77f8.fsf@zenmaya.xyz>

Hi Maya,

On Fri, Jun 21 2024, maya@zenmaya.xyz wrote:

> From a certain update my system fails to boot. It successfully boots
> into kernel and starts shepherd. But after that shepherd fails to
> activate some necessary service and the system is softlocked.

I have had the same problem repeatedly one one piece of equipment.  It
is vexing to the n-th degree.

> My question is, is there a way to debug this? I mostly need help with
> identifying the failing service, once I have it, I think I can sort it
> out.

I disable all suspect services and then add them back with an ad-hoc
geometric algorithm: I add half and, if those works, add a quarter, and
then an eighth...

There is some disagreement one how the Shepherd can produce better
logging output.  Some information may be in /var/log/messages but it can
be hard to find.

You are not alone.  Please post a reproducer if you have one.

Kind regards
Felix



  reply	other threads:[~2024-06-21 20:32 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-06-21 13:27 Debugging failing shepherd startup maya
2024-06-21 20:32 ` Felix Lechner via Development of GNU Guix and the GNU System distribution. [this message]
2024-06-27 13:07 ` Ludovic Courtès
2024-06-27 17:22   ` Maya
2024-06-28 15:17     ` Reproducer for " Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-06-28 16:43       ` Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-07-02 13:03       ` Attila Lendvai
2024-07-02 13:11         ` Attila Lendvai
2024-08-12 22:43           ` Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-08-13 13:46             ` Shepherd calendar event bug Ludovic Courtès
2024-08-16 19:13               ` Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-08-21 17:30                 ` Ludovic Courtès
2024-08-23 16:38                   ` Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-09-16 13:27             ` Reproducer for failing shepherd startup Attila Lendvai
2024-09-17  1:11               ` Felix Lechner via Development of GNU Guix and the GNU System distribution.

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