Systemd Hangs On Reboot

How to crash Linux Systemd with a single command line that fits in a tweet. ssh and su hang for 30 seconds since systemd is now integrated with the login system). The exact same shutdown/reboot issue happens when network connectivity to NFS server is lost and shutdown/reboot is issued. Meanwhile force the reboot with  SysRq  or hard reset. You try to boot a system but it hangs while booting. asc (817 bytes) Download Attachment. Log looks like so:. The issue happened on a fresh Arch Linux installation but the solution here can be used on any systemd-based distributive. v 0 Comments Recently while playing around disk partitions on fedora 28 i have observed that boot times were painfully slow on my laptop, when investigated found the issue was due to an enty for non existant swap partition in fstab. I have been very skeptic about systemd and why one would need to replace the existing init scripts. Without it the machine hangs with or >> without a kernel panic message on screen during the boot or right after >> the login: prompt is printed. Instead of a video, I got a screen saying I needed to install Adobe Flash. Notice: Undefined index: HTTP_REFERER in /home/eventsand/domains/eventsandproduction. Emergency is matched by emergency. systemd: Hangs indefinitely on >90% of reboot attempts. This solved many issues I had with the reboot/shutdown process, but sometimes (randomly and rarely) never the less, proxmox hangs on reboot/shutdown at the stage "reached target shutdown". The shtdown hooks are literally the last thing that runs before reboot() is invoked (or if configured we pass control back to the initrd, see above), and if things hang there, then it's unlikely systemd is doing anything. Announcing Two Upgraded Robolinux 9. NOTE: You should not stop the Portworx systemd service while applications are still using it. This time I just rebooted the server, because it was development environment. target unit. Various useful systemd related commands. During at least 1min30s I get a black screen and, after then, I can finally call a terminal and restarting systemd solves the issue. reboot [arg] Shut down and reboot the system. systemd-udev-settle. For example, one person got this message when their tmp file system got filled up (mine is not). I have another machine with xp pro but when I boot from cd it freezes at starting windows and I do not get to the option to repair. The post explains how to bootup RHEL 7 system into rescue mode or emergency mode. If you would like to perform any kind of actions like start, stop, restart, enable, reload & status against the specific service then use the following commands. I have a message during boot that says " scanning Brtfs drives" or something like that. Cloud-Init Stages in Upstart and Systemd Date Tue 03 May 2016 Tags openstack / metadata / cloud-init Cloud-init can be found on most cloud images provided by an elastic cloud vendor. We are currently in the process of trying to figure out how to get it working. The following explains how systemd can be used with the Docker daemon. systemd, the modern Linux service and resource manager. su - root 3. What can I can do to diagnose this further? UPDATE: Per suggestion, I keyed commands on the console under sudo to 'systemctl start debug-shell' followed by a 'reboot'. com Linux Tips, Tricks & news today :- Through on this article you will get idea to start / stop / restart / enable / reload the Exim Mail server in Linux Distro such as RHEL, CentOS, Ubutnu & Mint, Debian, Fedora & openSUSE. One thing that Systemd does fairly consistently and sensibly, once you get the hang of it, is file locations. x86_64 and upgraded the machine from FC14 using yum distro-sync, if that. Ubuntu Minimal KODI Install. This work is based on Full Disk Encryption From Scratch Simplified. installed and the dnsmasq service is started after postfix by systemd, it hangs (on the first start attempt after boot, subsequent attempts appear to work). systemd-udev-settle. Then sometimes, after 10-15 minutes it stops/reboot, sometimes it stays there until I manually reset the system. 9 kernel, sometimes my systems hangs on boot with. Start the Docker daemon Start manually. [SOLVED] Sys hangs 1mn 30 s flushing rtime journal at boot: View unanswered posts Systemd-journald[3960] Received request to flush runtime journal from PID 1. The latter option usually goes along with disabling the login screen or prompt, launching and running Kodi in full-screen. TYPE STATE 525 reboot. We've now tested and deployed a setup using this, so I want to walk. When you shutdown or reboot your system, systemd tries to stop all services as fast as it can. That involves bringing down the network and terminating all processes that are still alive -- usually in that order. It hangs until I kill systemctl with Ctrl-C. Just a little tweak: by default, std out/err are directed to journalctl (systemd's component that replaces syslog); but with a python3 script, the output is double-buffered, which means it won't appear normally in the logs (output will be flushed from time to time, which is not precictible), so it is best to launch python3 scripts with the -u flag. I'm away from the system in question, so I can grab more details when I get back home. I had to rollback. Ask Question systemd is a more generalized system that takes actions based on events and mounting and unmounting. Summary changed from VB hangs on linux guest reboot. Restart policies only apply to containers. The computer works, as I can login and shutdown by doing those operation blindly. Lenovo Registration Startup. The centos contains 2 versions of kernel: 3. log_target=kmsg systemd. crash_reboot Takes a boolean argument or enables the option if specified without an argument. 04 installation to 16. There are many reasons why a system might hang during reboot/shutdown. we have many centos 6 (and red hat 6) clients using the same setup - and it works like a charm. I find it odd that it hit 100% then eventually went back to normal, is there anything the journal does that should peg the CPU that hard? Or does systemd monitor the journal for hangs and restart it? (Did it hang, hence 100% cpu, systemd detected it, killed the journal and automatically restarted it?). systemd is hanging when I start or restart a service. What/where should I look at to fix the problem? I am using systemd v196 and cannot upgrade it to version >=198 because the latter requires a recent kernel (with support for cgroups), which cannot be updated by customer requirements. The following configuration splits your screen in three panes: one for SBBS log, other for UMONITOR and a last one for SCFG. Running job at startup (boot time) You need to use special string called @reboot. service start waiting 622 umount. conf in the web server, not the apache. Therefore observing boot issues/errors becomes a little of a challenge for us. systemd hangs on boot (self. The next step is to make your service available as soon as the machine boots up, and close down when you switch it off at night. Note I removed the 'network. When the system hangs from a remote reboot, the drive time is close to 30 minutes so trying to use an alternate debug-shell is futile. It hangs until I kill systemctl with Ctrl-C. For example, this is how we used to restart SSHD with the old upstart init scripts: /etc/init. Procedure Initcall debug. systemd - failed to boot (bad file descriptor) but it's more like systemd bug. 0008314: nslcd stops working - and them systemd hangs when trying to restart it Description we use nslcd for ldap lookups. I made the changes to system to use ttyUSB0 and everything works fine until I try to reboot. Introduction. Solved: Hello, after changing from Kernel 4. Boot with these parameters on the kernel command line: systemd. kill (5) for details on how you can influence the way systemd terminates the service. When I do this, the systemd hangs when it's trying to close the getty service for console (console-getty. Tried both with and without RemoteFX. I want the system to use only console(s) defined in kernel commandline and this would be changeable from u-boot environment. Network connectivity to NFS server means for example: - unavailability of NFS server - no route to NFS server (broken switch) To easily reproduce the issue with NFS hard mounts: 1. [ [32m OK [0m] Started Update UTMP about System Boot/Shutdown. Systemd boots a lot faster. target) system hangs by nvidia-persistence daemon - it not unload, after several minuts computer shutdown. The syntax is as follows:. Although rebooting system solves the problem, fortunately it is enough to restart the systemd manager only: sudo systemctl daemon-reexec. But there doesn’t seem to be a corresponding dbus\x2d:1. (In /boot/cmdline. If yes, the system manager (PID 1) will reboot the machine automatically when it crashes, after a 10s delay. On next boot the reboot. We've now tested and deployed a setup using this, so I want to walk. This guide is tested in Ubuntu 18. I will be having a look at the logs tonight to see if anything is obviously wrong. I tried removing systemd but it still does not work. ssh and su hang for 30 seconds since. I have another machine with xp pro but when I boot from cd it freezes at starting windows and I do not get to the option to repair. I'm away from the system in question, so I can grab more details when I get back home. Once Docker is installed, you need to start the Docker daemon. systemd - failed to boot (bad file descriptor) but it's more like systemd bug. Re: After last updates RPI 3+ hangs on shurdown/reboot if bluetooth off Tue Sep 18, 2018 11:07 pm Forum member Herbaldew noticed there was a new commit with the same version number and said it fixed the problem. It drops to the console output, then does nothing. I've been testing my python app on the server and whether it can run 24/7, however what I've found is that it can run on my PC 24/7 without any crash, but for some reason it just "lags" on the VPS from azure it's running as a systemd service and after random period of time just stops "working" the thing is that the main loop is just. ) As I just upgraded my 14. This prevents a container which does not start at all from going into a restart loop. The shtdown hooks are literally the last thing that runs before reboot() is invoked (or if configured we pass control back to the initrd, see above), and if things hang there, then it's unlikely systemd is doing anything. You will find this specially useful if you have a Raspberry Pi in a remote location and the operating system hangs and there's no one around to reboot it. The system feels generally unstable (e. log_target=kmsg log_buf_len=1M printk. If you shutdown, wait 2 days, boot, time at boot will be 2 days off until the NTP client has synced. Load the bcm2708_wdog kernel module. We've now tested and deployed a setup using this, so I want to walk. Your best option is simply to boot into another Linux, be it on a different partition, a USB drive or a CD and run fsck manually on the faulty partition, which can easily be unmounted if necessary because no OS is using it. service start waiting 622 umount. Automatically restart SSH sessions and tunnels with AutoSSH and use systemd to launch SSH tunnels at boot time. Support & Help Requests. Jan 18 14:24:14 raspberrypi systemd[1]: Stopped Hyperion Systemd. it just appears to hang. Either way, I doubt systemd has anything to do with this. *** This response is my personal opinion and may not reflect that of my employer. The Systemd system management daemon was designed to replace current init system inherited from UNIX System V operating systems such Linux and thus making current init system obsolete. systemd is started properly, it launches LightDM, then LightDM launches X server, then LightDM executes this script > #!/usr/bin/env bash > xrandr --output DP-4 --off > xdotool mousemove 1280 600 > numlockx and kernel hangs (freezes). hang, or other errors may result. systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for. Why does systemd stop my service but not restart it?. In general, the systemd developers' idea of a standard libc is one that has bug-for-bug compatibility with glibc. 4 Hangs on Reboot - Nothing Helpful in /var/log/messages Jan 3 07:00:01 localhost systemd: Created slice User Slice of root. I found another interesting thing. 19 Summary. Help with slow boot and shutdown of 16. target --job-mode=replace-irreversibly, but also prints a wall message to all. Here you will find RHEL 7 instructions to boot, reboot, and shut down a system normally. In other-words Conflicts=reboot. Bug 1365352 - Hang on reboot, watchdog did Hang on reboot, watchdog did not stop Last message seen on system restart is watchdog did not stop and the reboot. systemd is provided by Debian but Debian is not just limited to a Linux kernel. Raspbian comes with a utility service called fake-hwclock that, every 15 minutes, at boot and at shutdown, syncs system time with the contents of a text file containing a date. It provides a system and service manager that runs as PID 1 and starts the rest of the system. as the topic says, my booting process hangs after systemd-fsck with no errors or anything. It is included with systemd, which is. 11-4 freezes on boot with the above message. trigger the reboot or shutdown of the NFS client System will never. log_target=kmsg log_buf_len=1M printk. I use Gentoo Linux with LightDM. What is the earliest place in the boot process where I can put my script? I looked at that file and I only calls this binary "/lib/systemd/systemd" Is this the. First, tell systemd to enable it, so that it will start every time we boot: systemctl enable myservice. To have Ubuntu boot to Kodi, you must either use a Kodi standalone service or autostart Kodi. How to boot into command line on Ubuntu or Debian Posted on December 30, 2015 by Dan Nanni 16 Comments Question: I am running Ubuntu desktop, but I want to boot straight into text-mode console temporarily. # apt-get install systemd (81 packages in all, hangs at restarting services) I do believe there is a problem when upgrading wheezy with systemd to jessie. Otherwise, the system will hang indefinitely. This document (7015867) is provided subject to the disclaimer at the end of this document. It is included with systemd, which is. KDE ME CARGA DEMASIADO, LO SIENTO. After 1-2 minutes the command finishes successfully. v 0 Comments Recently while playing around disk partitions on fedora 28 i have observed that boot times were painfully slow on my laptop, when investigated found the issue was due to an enty for non existant swap partition in fstab. systemd is provided by Debian but Debian is not just limited to a Linux kernel. This time I just rebooted the server, because it was development environment. 1 of 10 times, systemd hangs during reboot. I found another interesting thing. The command does not print any diagnostic. The Systemd system management daemon was designed to replace current init system inherited from UNIX System V operating systems such Linux and thus making current init system obsolete. On next boot the reboot. The issue happened on a fresh Arch Linux installation but the solution here can be used on any systemd-based distributive. 0008314: nslcd stops working - and them systemd hangs when trying to restart it Description we use nslcd for ldap lookups. Once I use the above settings, systemd seems to boot perfectly, at >> least for the last two boots. log_target=kmsg. Defaults to no, in order to avoid a reboot loop. Announcing Two Upgraded Robolinux 9. Something event driven is a good approach. That system is updated relatively frequently. I have found out that in openSUSE 12. Fedora 21 hangs on boot after YUM update After watching two shows, I tried to watch a third. Please see systemd. A copy of systemd-boot will be stored as the EFI default/fallback loader at /EFI/BOOT/BOOT*. systemd really speeds up system startup by running the many startup processes in parallel and avoids the usage of shell scripts altogether. Systemd is Here! With the arrival of systemd in the buntu universe the old way of setting up startup and shutdown scripts is outdated. When the boot process hangs, automounts fail, or shutdown gets stuck waiting on nfs (saying it will time out but the time out target keeps moving), troubleshooting requires knowing C. The shtdown hooks are literally the last thing that runs before reboot() is invoked (or if configured we pass control back to the initrd, see above), and if things hang there, then it's unlikely systemd is doing anything. Tried both with and without RemoteFX. What is the earliest place in the boot process where I can put my script? I looked at that file and I only calls this binary "/lib/systemd/systemd" Is this the. The boot hang on the position "Started Update UTMP about System Runlevel Changes" Can anybody help me to solve the problem?. If sshd stops normally, though, such as with a systemctl stop command, it will not be restarted. service hangs on fedora 28 July 11, 2018 July 11, 2018 pawaan. conf files, and so on, under /usr/lib. The issue seems unrelated to secure boot, as I've tried it with it on and off. One of the nice things about systemd is that it is a single command that can be used to manage almost all aspects of a process. we have many centos 6 (and red hat 6) clients using the same setup - and it works like a charm. crash_reboot. Sometimes it will power off completely, other times it just hangs at "Reached target shutdown," and likewise for reboot. systemd is hanging when I start or restart a service. Linux: Connection timed out, cannot reboot systemd based system Michls Tech Blog My Knowledgebase for things about Linux, Windows, VMware, Electronic and so on…. systemd is in charge of mounting the partitions and filesystems specified in /etc/fstab. systemd-analyze blame confirms that cloud. As such, while it is possible to perform lifecycle management of services on systemd platforms using the systemd_service resource, the systemd cookbook authors do not recommend doing so. com/public_html/7z6n2d/vclw4. Caution: This seriously increases the amount of logs written to disks. In this article we have a look at how to solve it. The crontab command maintains crontab files for individual users. 11-4 freezes on boot with the above message. systemd - failed to boot (bad file descriptor) but it's more like systemd bug. Emergency is matched by emergency. Systemd brings in a lot of new code which will, naturally, have lots of bugs that will take time to find & remove. XX and a luks encrypted SSD, you did set on older OS “tmpfs” for /tmp. Are they any ideas on why 'Update UTMP about System Boot/Shutdown' is failing? Jim A. The systemd init system provides additional commands that perform the same functions; for example systemctl reboot or systemctl poweroff. We have a RabbitMQ service which sometimes can go down. One can install or remove cron jobs as per needs. Systemd is an alternative service manager to the more traditional init system. @TarunLalwani the only ENV variable different was the PATH variable which I set in the Environment= field in my systemd Unit file and restarted and I still see the same behavior as the process just hangs again executing systemctl restart kafka-connect command. Migrate all application pods using kubectl drain from the node before stopping the Portworx systemd service. systemctl just hangs. A systemd-boot entry in the EFI boot variables is created if there is no current entry. We need to do two more things. This time I just rebooted the server, because it was development environment. February 6, 2016 February 6, 2016 Peter Scargill Uncategorized 14 Comments on Raspberry Pi hanging on reboot Ok, this is a favour for my pal David Miles. target is a symbolic link to graphical. so it never really "crashes" in a way that systemd would restart it (which is fine. So need to: restart it if is exited with the failure; send an email notification; Let’s do it via RabbitMQ’s systemd service (though there are various options, e. 0 - Preliminary Notes: Starting with Fedora 16, getting OpenVAS working with the Greenbone Security Assistant Desktop and Web interface has been a challenge. One of the nice things about systemd is that it is a single command that can be used to manage almost all aspects of a process. Unfortunately, there doesn't seem to be relevant information in the debug log file of systemd (see attached). Linux kernel 4. Those problems can't be fixed by config files and documentation. This is related to iptables. Step 1- Create A Unit File. systemd ships as the default process manager on Ubuntu 15; get the neo4j systemd service file to install and learn about the configuration. KDE ME CARGA DEMASIADO, LO SIENTO. log_target=kmsg log_buf_len=1M printk. 04 due to wrong swap device UUID used in /etc/fstab, including systemd analysis and critical chain, disk speed checks, initramfs updates, wrong resume device, disabling services, journal flush, post-boot slowness due to readahead messages, one-time issues with Intel. txt on a Vero). Expected behaviour: systemd unmounts encrypted swap on shutdown. * hangs after running LightDM. systemd, the modern Linux service and resource manager. freedesktop. So need to: restart it if is exited with the failure; send an email notification; Let's do it via RabbitMQ's systemd service (though there are various options, e. Can't reboot the system? Tough luck, you're up the creek. systemd has its own logging system called the systemd journal. I have created bug report at arch's bugzilla, but there is no one, who can find the problem. The fourth method to run a program on your Raspberry Pi at startup is to use the systemd files. I don't have any drive in that format. Help with slow boot and shutdown of 16. - mattdonders Jul 22 at 14:28. 30 minutes is the system level timeout to force a reboot. That was one of the > first things I tried some time ago. Note that systemd is available only from the Jessie versions of Raspbian OS. Systemd is one way to go, more flexible, etc, etc. Load the bcm2708_wdog kernel module. On Linux, like all tasks, the shutdown and restart operations can also be done from the command line. 1 released with and the system no. service hangs on fedora 28 July 11, 2018 July 11, 2018 pawaan. When I force it by powering off and repowering, it gives me "recovering journal" messages on boot. Throttling execution a little Version-Release number of selected component (if applicable): How reproducible: always Steps to Reproduce: 1. Linux is supposed to the most secure operating system in the world with very few flaws but a security researcher has discovered that a single command line is enough to crash the popular Systemd feature in Linux. systemd is the new way of running services on Linux. su - root 3. TYPE STATE 525 reboot. SSH tunnelling for fun and profit: AutoSSH. [SOLVED] Sys hangs 1mn 30 s flushing rtime journal at boot: View unanswered posts Systemd-journald[3960] Received request to flush runtime journal from PID 1. This works in most cases, where the issue is originated due to a system corruption. How to remove nomodeset. The system feels generally unstable (e. systemd-modules-load. Sure enough, this was the first process that the system launched upon boot. A systemd-boot entry in the EFI boot variables is created if there is no current entry. I have a small Gateway SX2855-UB12P. With this advice I was able to disable my laptop’s annoying habit of going to sleep during shutdown while lid is closed. Linux: Connection timed out, cannot reboot systemd based system Michls Tech Blog My Knowledgebase for things about Linux, Windows, VMware, Electronic and so on…. I also changed the boot level. Managing temporary files with systemd-tmpfiles on Red Hat Enterprise Linux 7. In order to boot the system with a particular boot option, in the systemd-boot screen, press e to edit the options. Run level 5 is emulated by graphical. Then it starts a "systemd-fsck" that hangs and prolong my boot time considerably. The boot hangs because Xorg fails to load because the nvidia driver fails to load because the nvidia kernel module has not been loaded. One of the nice things about systemd is that it is a single command that can be used to manage almost all aspects of a process. Linux execute cron job after system reboot. I intend to embrace systemd and see where it gets me. On next boot the reboot. xterm journalctl -fa --nopager 4. For example, one person got this message when their tmp file system got filled up (mine is not). Load the bcm2708_wdog kernel module. encrypt your swap partition with a new key on each boot. The created entry will be added to the end of the boot order list. mount file configured for various SAMBA shares, and I simply issued "systemctl enable share-x-y-z. The fourth method to run a program on your Raspberry Pi at startup is to use the systemd files. Don't know why i get messages about shutdown and reboot during the boot process. Some new windows opened would hang on various attempts. If I look at the the process tree I can see that '/usr/bin/systemd-tty-ask-password-agent --watch' hangs as long as the command hangs. Phoronix: Trimming systemd Halved The Boot Time On A PocketBeagle ARM Linux Board Happening this week over in Lyon, France is the Embedded Linux Conference Europe and Open-Source Summit Europe events. I don't have any drive in that format. That is the problem I can not get to that point in the install. The service is active but seems to run the exit after the network has already gone (or something it needs). Thanks, systemd, for returning us to the era where the best answer to system problems for almost everyone is 'hell, I don't know, reboot the system and hope it goes away'. How to install, manage, start and autostart ssh service on RHEL 7 start - LinuxConfig. This guide is tested in Ubuntu 18. Systemd hangs at the ~2s mark on boot fsck the root filesystem. If enabled, the system manager (PID 1) will reboot the machine automatically when it crashes, after a 10s delay. It also seems unrelated to systemd, as I've tried both systemd distributions (Fedora, Ubuntu) and non-systemd (Slackware). [SOLVED] reboots hang with "watchdog I've modified the systemd config file so the watchdog timeout is 10 seconds. stop / start / restart the PX-OCI service. 1 of 10 times, systemd hangs during reboot. On next boot the reboot. It may also be helpful when an existing installation will not boot or otherwise needs adjustment. When I do this, the systemd hangs when it's trying to close the getty service for console (console-getty. That system is updated relatively frequently. Systemd offers a heartbeat supervisor for processes that manage it. target is meaningless at best and at worst it will prevent you from rebooting. A copy of systemd-boot will be stored as the EFI default/fallback loader at /EFI/BOOT/BOOT*. Why does systemd stop my service but not restart it?. For example, one person got this message when their tmp file system got filled up (mine is not). This means the command should succeed even when the system manager hangs or crashed. > > I found a post saying to disable it in /etc/fstab as a mount option > 'x-systemd. We've now tested and deployed a setup using this, so I want to walk. We can verify it by using the top command as shown below: Systemd makes a server boot quicker because it uses fewer scripts and tries to run more tasks in parallel, Systemd calls them units. The Linux system boots so fast that most of the output scrolls by too quickly to read the text (showing services being started) sent to the console. We need to do two more things. The shtdown hooks are literally the last thing that runs before reboot() is invoked (or if configured we pass control back to the initrd, see above), and if things hang there, then it's unlikely systemd is doing anything. If you do not have systemd installed (maybe you do not use a Linux kernel) then you have to start pcscd at boot (as before version 1. Do you know Systemctl command ? Sytemctl is a linux command to control the systemd system and service manager. Links on the discussions are in the Cause section. systemd-analyze blame confirms that cloud. Trouble is, issuing a reboot (or shutdown) command always hangs at the same point at the console: 'Reached target Shutdown', requiring a hard power off and restart. txt on a Vero). systemd hangs on startup or shutdown. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1. so it never really "crashes" in a way that systemd would restart it (which is fine. For example, on my servers with NFS-mounted home directories, I can no longer do “sudo reboot”; the system will hang indefinitely during shutdown and require a hard reset. The problem is that systemd is full of bugs. systemd is now installed by default in Fedora 14. I have a E machine and it comes with an image file of the system. journalctl --boot -1 --lines 1000 >last-shutdown. systemd-analyze blame confirms that cloud. It can automatically restart processes that fail to check in regularly via calls to sd_notify, or doing the equivalent action on a socket. I had it properly setup to boot in a console before, but somehow it changed the behavior on me. In general, this bug is a systemd one - all OSes with systemd are affected. Basic systemd Concepts systemd in SUSE ® Linux Enterprise 12 A kinder, gentler introduction from SUSE It lacks automatic restart of services (apart from what. systemd-boot, previously called gummiboot (German for: 'rubber dinghy'), is a simple UEFI boot manager which executes configured EFI images. xx and the FS check) and doing nothing, then turning itself off after a couple of minutes. The service is active but seems to run the exit after the network has already gone (or something it needs). The command for rebooting your computer is also shutdown. This means the command should succeed even when the system manager hangs or crashed. Without any other instructions, systemd would run a group of units at the same time. Solved: Hello, after changing from Kernel 4. service start waiting 622 umount. systemd really speeds up system startup by running the many startup processes in parallel and avoids the usage of shell scripts altogether. Hi, my pogoplug with Arch Linux ARM hangs in a boot loop after switching to systemd. 9 kernel, sometimes my systems hangs on boot with. Sometimes it will power off completely, other times it just hangs at "Reached target shutdown," and likewise for reboot. A note on the name, though. Caution: This seriously increases the amount of logs written to disks.