GNU bug report logs - #65419
[Shepherd] Non-responding service control fiber

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludovic.courtes <at> inria.fr>
To: bug-guix <at> gnu.org
Subject: [Shepherd] Non-reponding service control fiber
Date: Mon, 21 Aug 2023 11:38:12 +0200

Hello,

On milano-guix-1 (a build machine behind bayfront, running shepherd
0.10.2), ‘herd status’ and ‘herd status guix-build-coordinator-agent’
would hang (there’s no ‘guix-build-coordinator’ process running).

‘herd stop childhurd2’ hangs and has no effect.

Conversely, ‘herd status nscd’ and similar for most other services works
fine.  When terminating a service’s process, the service gets respawned
just fine.

The conclusion seems to be that the control fiber of the ‘root’ service
is not responding: it is blocked on a get/put? did it exit?

Unfortunately we don’t have data from the logs that would give clues as
to what went wrong.

Ludo’.

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