[Touch-packages] [Bug 1528655] Re: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time
[Expired for systemd (Ubuntu) because there has been no activity for 60 days.] ** Changed in: systemd (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1528655 Title: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time Status in systemd package in Ubuntu: Expired Bug description: Yet another horrible bug related to systemd which delays shutdowns by minutes. https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1374759 surfaces this problem + the bug I'm reporting here is a separate issue. Neither reboot or shutdown -r now work sensibly any more. Both rely on systemd, which appears to be the root of most Ubuntu instabilities now, reading the many reported systemd bugs. Both the reboot + shutdown -r now commands should do what the mean. Shutdown + Reboot now... Not 150-250 seconds after requested, which appears to be some arbitrary systemd timeout. Please fix this problem + update this ticket with some workaround to get an instant reboot, till fix is available. Thanks. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1528655/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1528655] Re: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time
So apparently you already identified some processes that hang on shutdown. /usr/share/doc/systemd/README.Debian.gz describes how to find and debug those. If you want to keep this open against systemd, please attach /var/log/syslog right after a reboot, which should still contain most of the shutdown log from the previous boot (if that isn't sufficient, we'll need a complete journal for shutdown, after enabling persistent journal -- but let's get to that when we need it). ** Changed in: systemd (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1528655 Title: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time Status in systemd package in Ubuntu: Incomplete Bug description: Yet another horrible bug related to systemd which delays shutdowns by minutes. https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1374759 surfaces this problem + the bug I'm reporting here is a separate issue. Neither reboot or shutdown -r now work sensibly any more. Both rely on systemd, which appears to be the root of most Ubuntu instabilities now, reading the many reported systemd bugs. Both the reboot + shutdown -r now commands should do what the mean. Shutdown + Reboot now... Not 150-250 seconds after requested, which appears to be some arbitrary systemd timeout. Please fix this problem + update this ticket with some workaround to get an instant reboot, till fix is available. Thanks. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1528655/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1528655] Re: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: systemd (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1528655 Title: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time Status in systemd package in Ubuntu: Confirmed Bug description: Yet another horrible bug related to systemd which delays shutdowns by minutes. https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1374759 surfaces this problem + the bug I'm reporting here is a separate issue. Neither reboot or shutdown -r now work sensibly any more. Both rely on systemd, which appears to be the root of most Ubuntu instabilities now, reading the many reported systemd bugs. Both the reboot + shutdown -r now commands should do what the mean. Shutdown + Reboot now... Not 150-250 seconds after requested, which appears to be some arbitrary systemd timeout. Please fix this problem + update this ticket with some workaround to get an instant reboot, till fix is available. Thanks. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1528655/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1528655] Re: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time
The systemd facility changes sysvinit behavior considerably, especially sending no SIGKILL after SIGTERM. Suggested solution, send SIGKILL after timeout, following SIGTERM. Primary difference is systemd defers forever to underlying processes, rather than shooting them in the head eventually. This means processes which trap SIGTERM + never end, hang system shutdown. https://bugs.launchpad.net/ubuntu/+source/mysql-5.6/+bug/1468804 describes this problem with MySQL, not MariaDB, which does a very fast shutdown. Another culprit is fail2ban, which takes far to long to shutdown. I'll push a shutdown fix for fail2ban shortly. Worst offenders are /etc/rc.local processes, especially where a supervisor program runs children + one or more children fail to die or the supervisor restarts them when they die. Issuing - systemctl --no- pager status rc.local.service - in a shell while issuing reboot in another shell shows this problem. The easiest way to debug a reboot hang is to run two shells + do reboot in one. Then a few seconds later issue - systemctl --no-pager status - in the surviving shell. A quick scan of this output usually surfaces the culprit. Starting the attached script in /etc/rc.local as follows... looper > /var/log/looper.log 2>&1 show systemd sends SIGTERM + never follows up with a SIGKILL, at least within 5 minutes, which is when I killed the process myself to allow reboot to finish shutdown + do restart. net4-dev# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu 15.10 Release:15.10 Codename: wily net4-dev# uname -a Linux net4.bizcooker.com 4.2.0-22-generic #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux ** Attachment added: "looper" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1528655/+attachment/4539392/+files/looper -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1528655 Title: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time Status in systemd package in Ubuntu: New Bug description: Yet another horrible bug related to systemd which delays shutdowns by minutes. https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1374759 surfaces this problem + the bug I'm reporting here is a separate issue. Neither reboot or shutdown -r now work sensibly any more. Both rely on systemd, which appears to be the root of most Ubuntu instabilities now, reading the many reported systemd bugs. Both the reboot + shutdown -r now commands should do what the mean. Shutdown + Reboot now... Not 150-250 seconds after requested, which appears to be some arbitrary systemd timeout. Please fix this problem + update this ticket with some workaround to get an instant reboot, till fix is available. Thanks. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1528655/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1528655] Re: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time
It appears - reboot -f - still works. And this is a harsh way to reboot a system. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1528655 Title: Wily/15.10 - systemd hangs reboot + shutdown for long periods of time Status in systemd package in Ubuntu: New Bug description: Yet another horrible bug related to systemd which delays shutdowns by minutes. https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1374759 surfaces this problem + the bug I'm reporting here is a separate issue. Neither reboot or shutdown -r now work sensibly any more. Both rely on systemd, which appears to be the root of most Ubuntu instabilities now, reading the many reported systemd bugs. Both the reboot + shutdown -r now commands should do what the mean. Shutdown + Reboot now... Not 150-250 seconds after requested, which appears to be some arbitrary systemd timeout. Please fix this problem + update this ticket with some workaround to get an instant reboot, till fix is available. Thanks. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1528655/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
