scripts/lvm2_monitoring_init_rhel4

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2007 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 ### BEGIN INIT INFO
  22 # Provides:
  23 ### END INIT INFO
  24
  25 . /etc/init.d/functions
  26
  27 VGCHANGE="/usr/sbin/vgchange"
  28 WARN=1
  29
  30 start()
  31 {
  32         ret=0
  33         # TODO do we want to separate out already active groups only?
  34         VGS=`vgs --noheadings -o name --config 'log{command_names=0 prefix="  "}' 2> /dev/null`
  35         for vg in $VGS
  36         do
  37             action "Starting monitoring for VG $vg:" $VGCHANGE --monitor y --config 'log{command_names=0 prefix="  "}' $vg || ret=$?
  38         done
  39
  40         return $ret
  41 }
  42
  43
  44 stop()
  45 {
  46         ret=0
  47         # TODO do we want to separate out already active groups only?
  48         if test "$WARN" = "1"; then
  49            echo "Not stopping monitoring, this is a dangerous operation. Please use force-stop to override."
  50            return 1
  51         fi
  52         VGS=`vgs --noheadings -o name --config 'log{command_names=0 prefix="  "}' 2> /dev/null`
  53         for vg in $VGS
  54         do
  55             action "Stopping monitoring for VG $vg:" $VGCHANGE --monitor n --config 'log{command_names=0 prefix="  "}' $vg || ret=$?
  56         done
  57         return $ret
  58 }
  59
  60 result=1
  61
  62 # See how we were called.
  63 case "$1" in
  64   start)
  65         start
  66         result=$?
  67         ;;
  68
  69   force-stop)
  70         WARN=0
  71         stop
  72         result=$?
  73         ;;
  74
  75   stop)
  76         test "$runlevel" = "0" && WARN=0
  77         test "$runlevel" = "6" && WARN=0
  78         stop
  79         result=$?
  80         ;;
  81
  82   restart)
  83         WARN=0
  84         if stop
  85         then
  86                 start
  87         fi
  88         result=$?
  89         ;;
  90
  91   status)
  92         # TODO anyone with an idea how to dump monitored volumes?
  93         ;;
  94
  95   *)
  96         echo $"Usage: $0 {start|stop|restart|status|force-stop}"
  97         ;;
  98 esac
  99
 100 exit $result