bug#44820: MPD fails after respawning too often

[Martin Becze]

I also ran into this problem. Here is the relevnat part of 
/var/run/mpd/<mpd-user>/log

> exception: Failed to create pid file "/var/run/mpd/<mpd-user>/pid": Permission 
> denied

A quick dirty fix is just to chown the /var/run/mpd folder so that mpd 
can create its pid file.

On 11/27/20 4:31 AM, Ludovic Courtès wrote:
> Hi,
>
> Simon <lists@netpanic.org> skribis:
>
> > On a recent pull, MPD will not start any more.
> >
> > Herd status reports:
> >
> > Status of mpd:
> >    It is stopped.
> >    It is disabled.
> >    Provides (mpd).
> >    Requires (user-processes).
> >    Conflicts with ().
> >    Will be respawned.
> >    Last respawned on Mon Nov 23 10:22:07+0100 2020.
> >
> >
> > Reading my messages, I find:
> >
> > Nov 23 10:22:07 localhost shepherd[1]: Respawning mpd.
> > Nov 23 10:22:07 localhost shepherd[1]: Service mpd has been started.
> > Nov 23 10:22:07 localhost shepherd[1]: Respawning mpd.
> > Nov 23 10:22:07 localhost shepherd[1]: Service mpd has been started.
> > Nov 23 10:22:07 localhost shepherd[1]: Respawning mpd.
> > Nov 23 10:22:07 localhost shepherd[1]: Service mpd has been started.
> > Nov 23 10:22:07 localhost shepherd[1]: Respawning mpd.
> > Nov 23 10:22:07 localhost shepherd[1]: Service mpd has been started.
> > Nov 23 10:22:07 localhost shepherd[1]: Respawning mpd.
> > Nov 23 10:22:07 localhost shepherd[1]: Service mpd has been started.
> > Nov 23 10:22:07 localhost shepherd[1]: Respawning mpd.
> > Nov 23 10:22:07 localhost shepherd[1]: Service mpd has been started.
> > Nov 23 10:22:07 localhost shepherd[1]: Service mpd has been disabled.
> > Nov 23 10:22:07 localhost shepherd[1]:   (Respawning too fast.)
> >
> >
> > Unfortunately, there are no further messages as to why the service is
> > disabled, or why the daemon is respawning too often.
>
> Does /var/log/mpd/mpd.log or similar contain useful info?
>
> Could you share your ‘mpd-configuration’?
>
> There have been two changes recently, which fixed the mpd system test,
> but perhaps they introduced other issues:
>
>    
> https://git.savannah.gnu.org/cgit/guix.git/log?id=bb124f6e9c0af0a23736f233c2ea2c9c9b4a40a6
>
> Thanks for reporting the issue,
> Ludo’.