PAL.C.T MINI SHELL
#!/bin/bash
#
# multipathd Starts the multipath daemon
#
# chkconfig: - 06 87
# description: Manages device-mapper multipath devices
### BEGIN INIT INFO
# Provides: multipathd
# Required-Start:
# Required-Stop:
# Default-Start:
# Default-Stop:
# Short-Description: Control multipathd
# Description: This service monitors and manages
# device-mapper multipath devices
### END INIT INFO
DAEMON=/sbin/multipathd
prog=`basename $DAEMON`
initdir=/etc/rc.d/init.d
lockdir=/var/lock/subsys
sysconfig=/etc/sysconfig
syspath=/sys/block
. $initdir/functions
test -r $sysconfig/$prog && . $sysconfig/$prog
RETVAL=0
teardown_slaves()
{
pushd $1 > /dev/null
if [ -d "slaves" ]; then
for slave in slaves/*;
do
if [ "$slave" = "slaves/*" ]; then
read dev < $1/dev
tablename=`dmsetup table --target multipath | sed -n "s/\(.*\): .* $dev .*/\1/p"`
if ! [ -z $tablename ]; then
echo "Root is on a multipathed device, multipathd can not be stopped"
exit 1
fi
else
local_slave=`readlink -f $slave`;
teardown_slaves $local_slave;
fi
done
else
read dev < $1/dev
tablename=`dmsetup table --target multipath | sed -n "s/\(.*\): .* $dev .*/\1/p"`
if ! [ -z $tablename ]; then
echo "Root is on a multipathed device, multipathd can not be stopped"
exit 1
fi
fi
popd > /dev/null
}
#
# See how we were called.
#
start() {
test -x $DAEMON || exit 5
echo -n $"Starting $prog daemon: "
modprobe dm-multipath >/dev/null 2>&1
daemon $DAEMON
RETVAL=$?
[ $RETVAL -eq 0 ] && touch $lockdir/$prog
echo
}
check_root() {
root_dev=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $1; }}' /etc/mtab)
dm_num=`dmsetup info -c --noheadings -o minor $root_dev 2> /dev/null`
if [ $? -eq 0 ]; then
root_dm_device="dm-$dm_num"
[ -d $syspath/$root_dm_device ] && teardown_slaves $syspath/$root_dm_device
fi
}
stop() {
echo -n $"Stopping $prog daemon: "
killproc $DAEMON
RETVAL=$?
[ $RETVAL -eq 0 ] && rm -f $lockdir/$prog
echo
}
force_queue_without_daemon() {
$DAEMON forcequeueing daemon
}
restart() {
force_queue_without_daemon
stop
start
}
reload() {
echo -n "Reloading $prog: "
trap "" SIGHUP
killproc $DAEMON -HUP
RETVAL=$?
echo
}
case "$1" in
start)
start
;;
stop)
check_root
stop
;;
force-reload|reload)
reload
;;
restart)
restart
;;
condrestart|try-restart)
if [ -f $lockdir/$prog ]; then
restart
fi
;;
status)
status $prog
RETVAL=$?
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|reload}"
RETVAL=2
esac
exit $RETVAL
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