Bug#854911: dbus fails to start on package installation on very minimal systems

[Alexander Kurtz]

Control: severity -1 normal

Hi!

Thanks for your quick reply! I tried to make this bug reproducible and
eventually succeeded: The crucial point was, that the package
installation must happen *before* systemd considers the system fully
booted, i.e. by installing the package inside "/etc/rc.local". This
means:

   1. This is certainly a corner case, so I have downgraded the severity
      to "normal".
   2. Depending on what our expectations on systemd are, this might be no
      bug at all.
   3. If it is a bug, it is probably not in the dbus package, but rather
      in the init-system-helpers or systemd package.

If you (or the systemd maintainers) are interested, you can reproduce
this bug with the attached script: Just run it as root and you should
eventually get a login prompt. Login as root (no password required) and
run "systemctl status dbus". The output should look like this:

	root at shepard:~# systemctl status dbus
	● dbus.service - D-Bus System Message Bus
	   Loaded: loaded (/lib/systemd/system/dbus.service; static; vendor preset: enabled)
	   Active: failed (Result: exit-code) since Sun 2017-02-12 00:17:56 CET; 3min 29s ago
	     Docs: man:dbus-daemon(1)
	 Main PID: 192 (code=exited, status=1/FAILURE)

	Feb 12 00:17:56 shepard systemd[1]: Started D-Bus System Message Bus.
	Feb 12 00:17:56 shepard dbus-daemon[192]: Failed to start message bus: No socket received.
	Feb 12 00:17:56 shepard systemd[1]: dbus.service: Main process exited, code=exited, status=1/FAILURE
	Feb 12 00:17:56 shepard systemd[1]: dbus.service: Unit entered failed state.
	Feb 12 00:17:56 shepard systemd[1]: dbus.service: Failed with result 'exit-code'.
	root at shepard:~# 

However, please also feel free to simply close this as NOTABUG. Thanks
again for your quick reply!

Best regards

Alexander Kurtz
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