external/gpl2/lvm2/dist/scripts/lvm2_monitoring_init_red_hat.in

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2007-2009 Red Hat, Inc. All rights reserved.
   4 #
   5 # This copyrighted material is made available to anyone wishing to use,
   6 # modify, copy, or redistribute it subject to the terms and conditions
   7 # of the GNU General Public License v.2.
   8 #
   9 # You should have received a copy of the GNU General Public License
  10 # along with this program; if not, write to the Free Software Foundation,
  11 # Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  12 #
  13 # This file is part of LVM2.
  14 # It is required for the proper handling of failures of LVM2 mirror
  15 # devices that were created using the -m option of lvcreate.
  16 #
  17 #
  18 # chkconfig: 12345 02 99
  19 # description: Starts and stops dmeventd monitoring for lvm2
  20 #
  21 # For Red-Hat-based distributions such as Fedora, RHEL, CentOS.
  22 #
  23 ### BEGIN INIT INFO
  24 # Provides: lvm2-monitor
  25 # Required-Start: $local_fs
  26 # Required-Stop: $local_fs
  27 # Default-Start: 1 2 3 4 5
  28 # Default-Stop: 0 6
  29 # Short-Description: Monitoring of LVM2 mirrors, snapshots etc. using dmeventd
  30 ### END INIT INFO
  31
  32 . /etc/init.d/functions
  33
  34 DAEMON=lvm2_monitor
  35
  36 exec_prefix=@exec_prefix@
  37 sbindir=@sbindir@
  38
  39 VGCHANGE=${sbindir}/vgchange
  40 VGS=${sbindir}/vgs
  41
  42 LOCK_FILE="/var/lock/subsys/$DAEMON"
  43
  44 WARN=1
  45
  46 start()
  47 {
  48         ret=0
  49         # TODO do we want to separate out already active groups only?
  50         VGSLIST=`$VGS --noheadings -o name 2> /dev/null`
  51         for vg in $VGSLIST
  52         do
  53             action "Starting monitoring for VG $vg:" $VGCHANGE --monitor y $vg || ret=$?
  54         done
  55
  56         return $ret
  57 }
  58
  59
  60 stop()
  61 {
  62         ret=0
  63         # TODO do we want to separate out already active groups only?
  64         if test "$WARN" = "1"; then
  65            echo "Not stopping monitoring, this is a dangerous operation. Please use force-stop to override."
  66            return 1
  67         fi
  68         VGSLIST=`$VGS --noheadings -o name 2> /dev/null`
  69         for vg in $VGSLIST
  70         do
  71             action "Stopping monitoring for VG $vg:" $VGCHANGE --monitor n $vg || ret=$?
  72         done
  73         return $ret
  74 }
  75
  76 rtrn=1
  77
  78 # See how we were called.
  79 case "$1" in
  80   start)
  81         start
  82         rtrn=$?
  83         [ $rtrn = 0 ] && touch $LOCK_FILE
  84         ;;
  85
  86   force-stop)
  87         WARN=0
  88         stop
  89         rtrn=$?
  90         [ $rtrn = 0 ] && rm -f $LOCK_FILE
  91         ;;
  92
  93   stop)
  94         test "$runlevel" = "0" && WARN=0
  95         test "$runlevel" = "6" && WARN=0
  96         stop
  97         rtrn=$?
  98         [ $rtrn = 0 ] && rm -f $LOCK_FILE
  99         ;;
 100
 101   restart)
 102         WARN=0
 103         if stop
 104         then
 105                 start
 106         fi
 107         rtrn=$?
 108         ;;
 109
 110   status)
 111         # TODO anyone with an idea how to dump monitored volumes?
 112         ;;
 113
 114   *)
 115         echo $"Usage: $0 {start|stop|restart|status|force-stop}"
 116         ;;
 117 esac
 118
 119 exit $rtrn