upstart - Githubissues

On systems with upstart mythbackend starts before ffdecsawrapper is ready for use. And because of that mythbackend cannot interact with the tv-tuner. => No recordings, no live TV.

To prevent this issue I use the following upstart configurations (see down).

The interesting part is the addition of "and started ffdecsawrapper" in the "start on" line of the mythtv-backend.conf, which lets mythbackend wait before starting until ffdecsawrapper has been started.

Perhaps this is of any use for you or other users.

/etc/init/ffdecsawrapper.conf:

description "DVB Loopback adapter with FFdecsa decryption"

start on runlevel [2345]
stop  on runlevel  [016]

emits ffdecsawrapper-started
emits ffdecsawrapper-stopped

console log

respawn
respawn limit 5 60

script
    . /etc/default/ffdecsawrapper

    rmmod dvbloopback 2> /dev/null || true
    sleep $DELAY
    modprobe dvbloopback num_adapters=$NUMADAPTERS
    sleep $DELAY

    cmd="/usr/bin/ffdecsawrapper $JOIN $OPTS --cam-dir $CAMDIR"
    echo "Starting ffdecsawrapper:"
    echo "$cmd"
    exec sudo -u $USER $cmd
end script

post-start script
    #sleep until listening and ready to start mythbackend
    while [ "`netstat -lnt | grep -c 5456`" != "1" ]; do
        sleep 1s
    done
    logger "ffdecsawrapper is listening..."
    initctl emit --no-wait ffdecsawrapper-started
end script

post-stop script
    rmmod dvbloopback 2> /dev/null || true
    initctl emit --no-wait ffdecsawrapper-stopped
end script

/etc/init/mythtv-backend.conf:

# MythTV Backend service

description     "MythTV Backend"
author          "Mario Limonciello <superm1@ubuntu.com>"

start on (local-filesystems and net-device-up IFACE!=lo and started udev-finish and started ffdecsawrapper)
stop on runlevel [016]

#should die within 5 seconds, but we don't want data loss, so set it to 30
#before we send SIGKILL
kill timeout 30

#if we crash, but not quickly
respawn
respawn limit 2 3600

#because we're daemonizing to avoid logging to upstart log
expect fork

pre-start script 
    [ -x /usr/sbin/mysqld ] || exit 0
    for i in `seq 1 30` ; do
       /usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf ping >/dev/null && exit 0
       sleep .5
    done
end script

script
    test -f /etc/default/locale && . /etc/default/locale || true
    LANG=$LANG exec /usr/bin/mythbackend --syslog local7 --user mythtv --daemon
end script

bas-t / ffdecsawrapper

upstart #18