cups-browsed/systemd question

[Till Kamppeter <till.kamppeter@gmail.com>]

Hi,

in the bug report cited below it is reported that systemd shutdown can
hang on cups-browsed and a suggestion is made how to solve the problem
by modifying the .service file.

Before simply overtaking this change I want to ask more people with
systemd experience, Tim, OdyX, what do you think? Is this the correct fix?

   Till

-------- Forwarded Message --------
Subject: [Bug 1266] New: [cups-filters] systemd shutdown can hang on
cups-browsed.service without avahi-daemon
Date: Sat, 28 Feb 2015 22:27:45 +0000
From: bugzilla-daemon@bugs.linuxfoundation.org
To: till.kamppeter@gmail.com

https://bugs.linuxfoundation.org/show_bug.cgi?id=1266

             Bug #: 1266
           Summary: [cups-filters] systemd shutdown can hang on
                    cups-browsed.service without avahi-daemon
           Product: OpenPrinting
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: cups-filters
        AssignedTo: till.kamppeter@gmail.com
        ReportedBy: james@nurealm.net
                CC: lars@uebernic.de
    Classification: Unclassified


cups-filters 1.0.65, on Arch linux

Last I shut down my system, I saw a "waiting on stop job". The log shows:

avahi-daemon[381]: Disconnected from D-Bus, exiting.
avahi-daemon[381]: Got SIGTERM, quitting.
topaz cupsd[380]: Unable to communicate with avahi-daemon: An unexpected
D-Bus
error occured
systemd[1]: Stopped D-Bus System Message Bus.

followed a minute and a half later with:

systemd[1]: cups-browsed.service stop-sigterm timed out. Killing.
systemd[1]: cups-browsed.service: main process exited, code=killed,
status=9/KILL
systemd[1]: Stopped Make remote CUPS printers available locally.
systemd[1]: Unit cups-browsed.service entered failed state.
systemd[1]: cups-browsed.service failed.

I suspect that cups-browsed.service may need

Requires=avahi-daemon.service
or
RequiresOverridable=avahi-daemon.service

rather than simply

Wants=avahi-daemon.service

as is used currently, this with systemd 219.

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