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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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: $local_fs
  27 # Default-Start: 1 2 3 4 5
  28 # Default-Stop: 0 6
  29 # Short-Description: Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling
  30 ### END INIT INFO
  31
  32 . /etc/init.d/functions
  33
  34 DAEMON=lvm2-monitor
  35 DMEVENTD_DAEMON=dmeventd
  36
  37 sbindir=@SBINDIR@
  38
  39 VGCHANGE="$sbindir/vgchange"
  40 VGS="$sbindir/vgs"
  41 LVS="$sbindir/lvs"
  42
  43 LOCK_FILE="@DEFAULT_SYS_LOCK_DIR@/subsys/$DAEMON"
  44 PID_FILE="@DMEVENTD_PIDFILE@"
  45
  46 WARN=1
  47 export LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES=1
  48
  49 rh_status() {
  50         status -p "$PID_FILE" "$DMEVENTD_DAEMON"
  51 }
  52
  53 rh_status_q() {
  54         rh_status >/dev/null 2>&1
  55 }
  56 start()
  57 {
  58         ret=0
  59         # TODO do we want to separate out already active groups only?
  60         VGSLIST=`$VGS --noheadings -o name --ignoreskippedcluster --config 'log{command_names=0 prefix="  "}' 2> /dev/null`
  61         for vg in $VGSLIST
  62         do
  63             action "Starting monitoring for VG $vg:" "$VGCHANGE" --monitor y --poll y --ignoreskippedcluster --config 'log{command_names=0 prefix="  "}' $vg || ret=$?
  64         done
  65
  66         return $ret
  67 }
  68
  69
  70 stop()
  71 {
  72         ret=0
  73         # TODO do we want to separate out already active groups only?
  74         if test "$WARN" = "1"; then
  75            echo "Not stopping monitoring, this is a dangerous operation. Please use force-stop to override."
  76            return 1
  77         fi
  78         VGSLIST=`$VGS --noheadings -o name --ignoreskippedcluster --config 'log{command_names=0 prefix="  "}' 2> /dev/null`
  79         for vg in $VGSLIST
  80         do
  81             action "Stopping monitoring for VG $vg:" "$VGCHANGE" --monitor n --ignoreskippedcluster --config 'log{command_names=0 prefix="  "}' $vg || ret=$?
  82         done
  83         return $ret
  84 }
  85
  86 rtrn=1
  87
  88 # See how we were called.
  89 case "$1" in
  90   start)
  91         rh_status_q && exit 0
  92         start
  93         rtrn=$?
  94         [ "$rtrn" = 0 ] && touch "$LOCK_FILE"
  95         ;;
  96
  97   force-stop)
  98         rh_status_q || exit 0
  99         WARN=0
 100         stop
 101         rtrn=$?
 102         [ "$rtrn" = 0 ] && rm -f "$LOCK_FILE"
 103         ;;
 104
 105   stop)
 106         rh_status_q || exit 0
 107         test "$runlevel" = "0" && WARN=0
 108         test "$runlevel" = "6" && WARN=0
 109         stop
 110         rtrn=$?
 111         [ "$rtrn" = 0 ] && rm -f "$LOCK_FILE"
 112         ;;
 113
 114   restart)
 115         WARN=0
 116         if stop
 117         then
 118                 start
 119         fi
 120         rtrn=$?
 121         ;;
 122
 123   status)
 124         rh_status
 125         rtrn=$?
 126         [ "$rtrn" = 0 ] && "$LVS" -S 'seg_monitor=monitored' -o lv_full_name,seg_monitor
 127         ;;
 128
 129   *)
 130         echo $"Usage: $0 {start|stop|restart|status|force-stop}"
 131         ;;
 132 esac
 133
 134 exit $rtrn