GNU bug report logs - #77132
Shepherd 1.0.3 build failure on powerpc-linux

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Message #26 received at 77132 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Simon Josefsson <simon <at> josefsson.org>
Cc: 77132 <at> debbugs.gnu.org
Subject: Re: Shepherd: flaky self tests
Date: Sun, 06 Jul 2025 21:44:18 +0200

[Message part 1 (text/plain, inline)]

Hi Simon,

(- guix-devel)

Simon Josefsson <simon <at> josefsson.org> writes:

> I instrumented the Debian package build system to patch the script to
> print debug info, below is that log output, is this better?

I made a mistake: in ‘file_descriptor_count’, the line to add should be:

  ls -l /proc/$shepherd_pid/fd/ >&2

Otherwise, if we do not redirect the output to standard error, the test
breaks poorly:

  ./tests/services/log-rotation.sh: line 186: test: too many arguments

Could you try that?

Also, I wonder if the problem could be a race condition, which would be
fixed like this:

[Message part 2 (text/x-patch, inline)]

diff --git a/tests/services/log-rotation.sh b/tests/services/log-rotation.sh
index 375f563..178bb49 100644
--- a/tests/services/log-rotation.sh
+++ b/tests/services/log-rotation.sh
@@ -182,6 +182,6 @@ $herd trigger log-rotation
 until test -f "$service_log3.2.gz"; do sleep 0.2; done
 $herd status three
 $herd stop three
-test $(file_descriptor_count) -le $initial_fd_count
+until test $(file_descriptor_count) -le $initial_fd_count; do sleep 0.3; done
 
 $herd stop log-rotation

[Message part 3 (text/plain, inline)]

Could you also give that a try?

Thanks,
Ludo’.

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