util-linux-blockdev.init

   1 #!/bin/sh
   2 #
   3 # blockdev              This shell script takes care of starting and stopping blockdev.
   4 #
   5 # chkconfig:    2345 01 99
   6 # description:  blockdev
   7 #
   8 # processname:  blockdev
   9
  10 [ -f /etc/sysconfig/blockdev ] || exit 0
  11
  12 blockdevs=$(awk -F= '!/^#/ && !/^$/ {if ($2) print $1}' /etc/sysconfig/blockdev)
  13 if [ -z "$blockdevs" ]; then
  14         case "$1" in
  15         start|stop|restart|force-reload)
  16                 exit 0
  17                 ;;
  18         esac
  19 fi
  20
  21 # Source function library.
  22 . /etc/rc.d/init.d/functions
  23
  24 # Source blockdev configuration.
  25 . /etc/sysconfig/blockdev
  26
  27 start() {
  28         if [ -f /var/lock/subsys/blockdev ]; then
  29                 msg_already_running blockdev
  30                 return
  31         fi
  32
  33         local var realdrive drive PARAMS
  34         for var in $blockdevs; do
  35                 realdrive=
  36                 drive=${var#BLOCKDEV_}
  37                 if [ -d "/sys/block/${drive}" -a -e "/dev/${drive}" ]; then
  38                         realdrive="/dev/${drive}"
  39                 elif [ -e "/dev/mapper/${drive}" ]; then
  40                         realdrive="/dev/mapper/${drive}"
  41                 elif drive=$(echo $drive | tr _ -) && [ -d "/sys/block/${drive}" -a -e "/dev/${drive}" ]; then
  42                         realdrive="/dev/${drive}"
  43                 elif [ -e "/dev/mapper/${drive}" ]; then
  44                         realdrive="/dev/mapper/${drive}"
  45                 fi
  46
  47                 if [ -n "$realdrive" ]; then
  48                         eval PARAMS=\$$var
  49                         if [ -n "${PARAMS}" ]; then
  50                                 show "Setting parameters for block drive %s (%s)" "$drive" "$PARAMS"
  51                                 busy
  52                                 /sbin/blockdev ${PARAMS} $realdrive
  53                                 ok
  54                         fi
  55                 fi
  56         done
  57         # TODO: retval not really handled here
  58         RETVAL=$?
  59         [ $RETVAL -eq 0 ] && touch /var/lock/subsys/blockdev
  60 }
  61
  62 stop() {
  63         # Stop daemons.
  64         if [ ! -f /var/lock/subsys/blockdev ]; then
  65                 msg_not_running blockdev
  66                 return
  67         fi
  68         rm -f /var/lock/subsys/blockdev
  69 }
  70
  71 status() {
  72         if [ -z "$blockdevs" ]; then
  73                 echo "no devices configured for blockdev"
  74                 RETVAL=1
  75                 return
  76         fi
  77
  78         echo "blockdev configured for:"
  79         local var drive realdrive PARAMS
  80         for var in $blockdevs; do
  81                 drive=${var#BLOCKDEV_}
  82                 echo -n "- $drive: "
  83
  84                 realdrive=
  85                 if [ -d "/sys/block/${drive}" -a -e "/dev/${drive}" ]; then
  86                         realdrive="/dev/${drive}"
  87                 elif [ -e "/dev/mapper/${drive}" ]; then
  88                         realdrive="/dev/mapper/${drive}"
  89                 elif drive=$(echo $drive | tr _ -) && [ -d "/sys/block/${drive}" -a -e "/dev/${drive}" ]; then
  90                         realdrive="/dev/${drive}"
  91                 elif [ -e "/dev/mapper/${drive}" ]; then
  92                         realdrive="/dev/mapper/${drive}"
  93                 fi
  94
  95                 eval PARAMS=\$$var
  96                 if [ -n "$realdrive" ]; then
  97                         echo "${PARAMS}; device=$realdrive"
  98                 else
  99                         echo "${PARAMS}; device not present"
 100                 fi
 101         done
 102 }
 103
 104 RETVAL=0
 105 # See how we were called.
 106 case "$1" in
 107   start)
 108         start
 109         ;;
 110   stop)
 111         stop
 112         ;;
 113   restart|force-reload)
 114         stop
 115         start
 116         ;;
 117   status)
 118         status
 119         ;;
 120   *)
 121         msg_usage "$0 {start|stop|restart|force-reload|status}"
 122         exit 3
 123 esac
 124
 125 exit $RETVAL