multipathd/multipathd.init.redhat

   1 #!/bin/bash
   2 #
   3 # multipathd    Starts the multipath daemon
   4 #
   5 # chkconfig: - 06 87
   6 # description: Manages device-mapper multipath devices
   7
   8 ### BEGIN INIT INFO
   9 # Provides: multipathd
  10 # Required-Start:
  11 # Required-Stop:
  12 # Default-Start:
  13 # Default-Stop:
  14 # Short-Description: Control multipathd
  15 # Description: This service monitors and manages
  16 #              device-mapper multipath devices
  17 ### END INIT INFO
  18
  19 DAEMON=/sbin/multipathd
  20 prog=`basename $DAEMON`
  21 initdir=/etc/rc.d/init.d
  22 lockdir=/var/lock/subsys
  23 sysconfig=/etc/sysconfig
  24 syspath=/sys/block
  25
  26
  27 . $initdir/functions
  28
  29 test -r $sysconfig/$prog && . $sysconfig/$prog
  30
  31 RETVAL=0
  32
  33 teardown_slaves()
  34 {
  35 pushd $1 > /dev/null
  36 if [ -d "slaves" ]; then
  37 for slave in slaves/*;
  38 do
  39         if [ "$slave" = "slaves/*" ]; then
  40                 read dev <  $1/dev
  41                 tablename=`dmsetup table --target multipath | sed -n "s/\(.*\): .* $dev .*/\1/p"`
  42                 if ! [ -z $tablename ]; then
  43                         echo "Root is on a multipathed device, multipathd can not be stopped"
  44                         exit 1
  45                 fi
  46         else
  47                 local_slave=`readlink -f $slave`;
  48                 teardown_slaves $local_slave;
  49         fi
  50         done
  51
  52 else
  53                 read dev <  $1/dev
  54                 tablename=`dmsetup table --target multipath | sed -n "s/\(.*\): .* $dev .*/\1/p"`
  55                 if ! [ -z $tablename ]; then
  56                         echo "Root is on a multipathed device, multipathd can not be stopped"
  57                         exit 1
  58                 fi
  59 fi
  60 popd > /dev/null
  61 }
  62
  63 #
  64 # See how we were called.
  65 #
  66
  67 start() {
  68         test -x $DAEMON || exit 5
  69         echo -n $"Starting $prog daemon: "
  70         daemon $DAEMON
  71         RETVAL=$?
  72         [ $RETVAL -eq 0 ] && touch $lockdir/$prog
  73         echo
  74 }
  75
  76 force_stop() {
  77         echo -n $"Stopping $prog daemon: "
  78         killproc $DAEMON
  79         RETVAL=$?
  80         [ $RETVAL -eq 0 ] && rm -f $lockdir/$prog
  81         echo
  82 }
  83
  84 stop() {
  85         root_dev=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $1; }}' /etc/mtab)
  86         dm_num=`dmsetup info -c --noheadings -o minor $root_dev 2> /dev/null`
  87         if [ $? -eq 0 ]; then
  88                 root_dm_device="dm-$dm_num"
  89                 [ -d $syspath/$root_dm_device ] && teardown_slaves $syspath/$root_dm_device
  90         fi
  91
  92         force_stop
  93 }
  94
  95 restart() {
  96         stop
  97         start
  98 }
  99
 100 force_restart() {
 101         force_stop
 102         start
 103 }
 104
 105 reload() {
 106         echo -n "Reloading $prog: "
 107         trap "" SIGHUP
 108         killproc $DAEMON -HUP
 109         RETVAL=$?
 110         echo
 111 }
 112
 113 case "$1" in
 114 start)
 115         start
 116         ;;
 117 stop)
 118         stop
 119         ;;
 120 force-stop)
 121         force_stop
 122         ;;
 123 force-reload|reload)
 124         reload
 125         ;;
 126 restart)
 127         restart
 128         ;;
 129 force-restart)
 130         force_restart
 131         ;;
 132 condrestart|try-restart)
 133         if [ -f $lockdir/$prog ]; then
 134             restart
 135         fi
 136         ;;
 137 status)
 138         status $prog
 139         RETVAL=$?
 140         ;;
 141 *)
 142         echo $"Usage: $0 {start|stop|force-stop|status|restart|force-restart|condrestart|reload}"
 143         RETVAL=2
 144 esac
 145
 146 exit $RETVAL