[Bug 1783499] Re: systemd: Failed to send signal

[Attila]

I have found that if I set the reboot once at 15 min, the server works
for 5-6 days. If the reboots are done once at 10 min, the server get
stuck in 24-48h max. Now I'm testing the reboots once at 20min, it
should take 10 days or more until is stuck.

Also, I have tried all "reboot=" grub options, nothing helps. The only
way to keep he server online is to set the reboot time less often. Odd!

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Title:
  systemd: Failed to send signal

Status in dbus package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  systemd: Failed to send signal.

  [    3.137257] systemd[1]: Failed to send job remove signal for 109: Connection reset by peer
  [    3.138119] systemd[1]: run-rpc_pipefs.mount: Failed to send unit change signal for run-rpc_pipefs.mount: Transport endpoint is not connected
  [    3.138185] systemd[1]: dev-mapper-ubuntu\x2d\x2dvg\x2droot.device: Failed to send unit change signal for dev-mapper-ubuntu\x2d\x2dvg\x2droot.device: Transport endpoint is not connected
  [    3.138512] systemd[1]: run-rpc_pipefs.mount: Failed to send unit change signal for run-rpc_pipefs.mount: Transport endpoint is not connected
  [    3.142719] systemd[1]: Failed to send job remove signal for 134: Transport endpoint is not connected
  [    3.142958] systemd[1]: auth-rpcgss-module.service: Failed to send unit change signal for auth-rpcgss-module.service: Transport endpoint is not connected
  [    3.165359] systemd[1]: Failed to send job remove signal for 133: Transport endpoint is not connected
  [    3.165505] systemd[1]: proc-fs-nfsd.mount: Failed to send unit change signal for proc-fs-nfsd.mount: Transport endpoint is not connected
  [    3.165541] systemd[1]: dev-mapper-ubuntu\x2d\x2dvg\x2droot.device: Failed to send unit change signal for dev-mapper-ubuntu\x2d\x2dvg\x2droot.device: Transport endpoint is not connected
  [    3.166854] systemd[1]: Failed to send job remove signal for 66: Transport endpoint is not connected
  [    3.167072] systemd[1]: proc-fs-nfsd.mount: Failed to send unit change signal for proc-fs-nfsd.mount: Transport endpoint is not connected
  [    3.167130] systemd[1]: systemd-modules-load.service: Failed to send unit change signal for systemd-modules-load.service: Transport endpoint is not connected
  [    2.929018] systemd[1]: Failed to send job remove signal for 53: Transport endpoint is not connected
  [    2.929220] systemd[1]: systemd-random-seed.service: Failed to send unit change signal for systemd-random-seed.service: Transport endpoint is not connected
  [    3.024320] systemd[1]: sys-devices-platform-serial8250-tty-ttyS12.device: Failed to send unit change signal for sys-devices-platform-serial8250-tty-ttyS12.device: Transport endpoint is not connected
  [    3.024421] systemd[1]: dev-ttyS12.device: Failed to send unit change signal for dev-ttyS12.device: Transport endpoint is not connected
  [    3.547019] systemd[1]: proc-sys-fs-binfmt_misc.automount: Failed to send unit change signal for proc-sys-fs-binfmt_misc.automount: Connection reset by peer
  [    3.547144] systemd[1]: Failed to send job change signal for 207: Transport endpoint is not connected

  
  How to reproduce:
  1. enable debug level journal
  LogLevel=debug in /etc/systemd/system.conf
  2. reboot the system
  3. journalctl | grep "Failed to send"

  
  sliu at vmlxhi-094:~$ lsb_release -rd
  Description:	Ubuntu 16.04.4 LTS
  Release:	16.04

  sliu at vmlxhi-094:~$ systemctl --version
  systemd 229
  +PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN

  sliu at vmlxhi-094:~$ dbus-daemon --version
  D-Bus Message Bus Daemon 1.10.6
  Copyright (C) 2002, 2003 Red Hat, Inc., CodeFactory AB, and others
  This is free software; see the source for copying conditions.
  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

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