GNU bug report logs - #67988
[Cuirass] ‘request-work’ responses received by several workers

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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: [Cuirass] ‘request-work’ responses
 received by several workers
Date: Sat, 23 Dec 2023 10:13:01 +0100

Hello,

I’m under the impression that sometimes, when the server replies to
‘worker-request-work’ messages, its reply is received by more than just
the target worker, leading to builds being performed twice:

--8<---------------cut here---------------start------------->8---
ludo <at> berlin ~$ sudo grep lyhz5d1jb396m32dy0fs9h8vqzw95ddp /var/log/cuirass-remote-server.log
2023-12-23 00:15:29 141.80.167.184 (0LFowqzr): build started: '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv'.
2023-12-23 00:18:41 fetching 1 outputs of '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' from http://141.80.167.184:5558
2023-12-23 00:18:45 build succeeded: '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv'
2023-12-23 00:21:20 141.80.167.159 (oNzYXCv5): build started: '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv'.
2023-12-23 00:24:31 fetching 1 outputs of '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' from http://141.80.167.159:5558
2023-12-23 00:24:32 build succeeded: '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv'
ludo <at> berlin ~$ sudo ssh root <at> 141.80.167.184 grep lyhz5d1jb396m32dy0fs9h8vqzw95ddp /var/log/cuirass-remote-worker.log
2023-12-23 00:12:32 0LFowqzr: building derivation `/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' (system: x86_64-linux)
2023-12-23 00:12:54 0LFowqzr: derivation /gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv build succeeded.
ludo <at> berlin ~$ sudo ssh root <at> 141.80.167.159 grep lyhz5d1jb396m32dy0fs9h8vqzw95ddp /var/log/cuirass-remote-worker.log
2023-12-23 00:17:51 oNzYXCv5: building derivation `/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' (system: x86_64-linux)
2023-12-23 00:18:17 oNzYXCv5: derivation /gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv build succeeded.
--8<---------------cut here---------------end--------------->8---

This is with Cuirass 1.2.0-1.bdc1f9f.

To be continued…

Ludo’.

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