[mythtv] Mythbackend Fails to start with --generate-preview error

[David George]

On 03/12/2008 10:08 AM, R. G. Newbury wrote:
> I have already looked at the init. It is the standard fedora script. I 
> have checked the defaults in /etc/sysconfig/mythbackend, and tried with 
> that file, and with just the defaults in the init.
>   
Definitely strange.   I just checked my Fedora 8 backend running trunk 
16519 (now, I upgrade trunk about once a month, so probably have used 
versions close to the ones you have tried) and I am using the exact init 
script from contrib, so it does work.  Other than a contrib reorg in 
16474, looks like the last change to fedora.init.backend was in 14222.
> So what exactly do you suggest, and exactly where in the script?
> Looking at it, this script is quite different than the script from a 
> year ago.
> Since it attempts to start, the problem is somewhere in here:
> (User is root, mbe_bin is /usr/local/bin/mythbackend (only one on the 
> machine! I checked! mbe_options is empty at the moment)
>
>    # Start
>          echo -n $"Starting $MBE_PROG: "
>          touch "/var/run/$MBE_PROG.pid"
>          chown "$MBE_USER":"$MBE_USER" "/var/run/$MBE_PROG.pid"
>          daemon --user "$MBE_USER" "$MBE_BIN"              \
>                 --daemon                                   \
>                 --logfile "$LOG_DIR/$LOG_FILE" "$LOG_OPTS" \
>                 --pidfile "/var/run/$MBE_PROG.pid"         \
>                 $MBE_OPTIONS
>          RETVAL=$?
>          [ $RETVAL = 0 ] && touch /var/lock/subsys/$MBE_PROG
>          echo
>          return $RETVAL
>      }
>
> What if, instead of using daemon I just call mythbackend with log and 
> pid options (and &&) ..Hmm, I do not have a daemon binary on this 
> laptop...Running Fedora 8 as at home. And there is no package 'daemon' 
> available if I 'yum install daemon'. Ok definitely weird as the old 
> version starts and runs, but the new ones don't.
>
>   
daemon is a shell function that is included in Fedora init scripts from 
/etc/init.d/functions.

You could try the following from the command line and see what you get:

mythbackend --daemon --logfile /var/log/mythtv/mythbackend.log -v 
important,general --pidfile /var/run/mythbackend.pid

Make sure you 'service mythbackend stop' first to make sure any old pid 
and lock files are removed if they exist.

-- 
David