Subject: Re: bug#53463: ci.guix.gnu.org not building the 'guix' job

From: Mathieu Othacehe <[email-masked]>
Date: Wed, 02 Feb 2022 19:41:08 +0100

Hello,

The issue here seems to be that the evaluations of the 'guix' jobset are
never finishing, even when the GC is not running.

I tried to strace one of the stuck evaluation process, it returns
repeatedly:

--8<---------------cut here---------------start------------->8---
[pid 36294] read(227, "gmlo\0\0\0\0J\0\0\0\0\0\0\0guix offload: error: failed to connect to 'localhost': Connection refused\n\0\0\0\0\0\0", 65536) = 96
[pid 36294] write(239, "gmlo\0\0\0\0J\0\0\0\0\0\0\0guix offload: error: failed to connect to 'localhost': Connection refused\n\0\0\0\0\0\0", 96) = 96
[pid 36294] rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
[pid 36294] pselect6(240, [40 227 239], [], [], NULL, NULL) = 1 (in [227])
[pid 36294] read(227, "gmlo\0\0\0\0G\0\0\0\0\0\0\0process 40190 acquired build slot '/var/guix/offload/localhost:2224/0'\n\0", 65536) = 88
[pid 36294] write(239, "gmlo\0\0\0\0G\0\0\0\0\0\0\0process 40190 acquired build slot '/var/guix/offload/localhost:2224/0'\n\0", 88) = 88
[pid 36294] rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
[pid 36294] pselect6(240, [40 227 239], [], [], NULL, NULL) = 1 (in [227])
[pid 36294] read(227, "gmlo\0\0\0\0J\0\0\0\0\0\0\0guix offload: error: failed to connect to 'localhost': Connection refused\n\0\0\0\0\0\0", 65536) = 96
[pid 36294] write(239, "gmlo\0\0\0\0J\0\0\0\0\0\0\0guix offload: error: failed to connect to 'localhost': Connection refused\n\0\0\0\0\0\0", 96) = 96
[pid 36294] rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
[pid 36294] pselect6(240, [40 227 239], [], [], NULL, NULL) = 1 (in [227])
[pid 36294] read(227, "gmlo\0\0\0\0G\0\0\0\0\0\0\0process 40190 acquired build slot '/var/guix/offload/localhost:2224/0'\n\0", 65536) = 88
[pid 36294] write(239, "gmlo\0\0\0\0G\0\0\0\0\0\0\0process 40190 acquired build slot '/var/guix/offload/localhost:2224/0'\n\0", 88) = 88
[pid 36294] rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
[pid 36294] pselect6(240, [40 227 239], [], [], NULL, NULL) = 1 (in [227])
[pid 36294] read(227, "gmlo\0\0\0\0J\0\0\0\0\0\0\0guix offload: error: failed to connect to 'localhost': Connection refused\n\0\0\0\0\0\0", 65536) = 96
[pid 36294] write(239, "gmlo\0\0\0\0J\0\0\0\0\0\0\0guix offload: error: failed to connect to 'localhost': Connection refused\n\0\0\0\0\0\0", 96) = 96
--8<---------------cut here---------------end--------------->8---

To be continued,

Thanks,

Mathieu