xnox and I debugged this together, and it seems like the upload of 234 in Debian switched to Meson, and there was a bug introduced here where KillUserProcesses was set back to `yes' instead of `no' as it's meant to be. To reboot the machine, autopkgtest runs `sh -c (sleep 3; reboot) &' over SSH. When we background this and then end the SSH connection - and logind session - systemd kills the sleep and the reboot is never run, so we see a system that has come up but never gone down.
I found this by entering a machine in the bad state and looking at the journal. In future I suggest that systemd's autopkgtests output the journal to their log so that this would be debuggable without admin access next time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1708051 Title: v234 seems to fail to reboot 5 times in a row on s390x, and crashes amd64/i386 instances To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1708051/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
