Around the same time I am seeing the below error in syslog May 18 08:49:24 platform3 systemd[1]: Removed slice User Slice of support. May 18 08:49:27 platform3 systemd[1]: Assertion 's->type == SERVICE_ONESHOT' failed at ../src/core/service.c:1792, function service_enter_start(). Aborting. May 18 08:49:27 platform3 systemd[1]: Caught <ABRT>, dumped core as pid 15839. May 18 08:49:27 platform3 systemd[1]: Freezing execution. busctl output looks like below ubuntu@platform3:~/logs$ busctl NAME PID PROCESS USER CONNECTION UNIT SESSION DESCRIPTION :1.1 976 systemd-logind root :1.1 systemd-logind.service - - :1.3 971 accounts-daemon root :1.3 accounts-daemon.service - - :1.5434 49174 systemctl root :1.5434 cron.service - - :1.5435 49223 systemctl root :1.5435 ssh.service - - :1.5436 49408 busctl ubuntu :1.5436 ssh.service - - :1.7 1109 unattended-upgr root :1.7 unattended-upgrades.se... - - com.ubuntu.LanguageSelector - - - (activatable) - - org.debian.AptXapianIndex - - - (activatable) - - org.freedesktop.Accounts 971 accounts-daemon root :1.3 accounts-daemon.service - - org.freedesktop.DBus 936 dbus-daemon messagebus org.freedesktop.DBus dbus.service - - org.freedesktop.hostname1 - - - (activatable) - - org.freedesktop.locale1 - - - (activatable) - - org.freedesktop.login1 976 systemd-logind root :1.1 systemd-logind.service - - org.freedesktop.network1 - - - (activatable) - - org.freedesktop.resolve1 - - - (activatable) - - org.freedesktop.systemd1 - - - (activatable) - - org.freedesktop.thermald - - - (activatable) - - org.freedesktop.timedate1 - - - (activatable) The issue comes once in a while. The only way I can recover the setup is to reboot. On Mon, May 18, 2020 at 5:17 PM Debraj Manna <subharaj.manna@xxxxxxxxx> wrote: > > Hi > > I am using systemd 229 on Ubuntu 16.04.6. > > ubuntu@platform1:~$ systemctl --version > systemd 229 > +PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP > +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS > +KMOD -IDN > > But sometimes when I am trying to mask a service. I am seeing an > error like below. > > systemctl mask hadoop-hdfs-zkfc.service > Failed to activate service 'org.freedesktop.systemd1': timed out > > Can someone suggest what is going wrong? > > Thanks, > Debraj _______________________________________________ systemd-devel mailing list systemd-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/systemd-devel