#!/bin/bash
# Copyright 2012 Citrix Systems, Inc. Licensed under the
# Apache License, Version 2.0 (the "License"); you may not use this
# file except in compliance with the License.  Citrix Systems, Inc.
# reserves all rights not expressly granted by the License.
# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# 
# Automatically generated by addcopyright.py at 04/03/2012

#set -x
 
usage() {
  printf "Usage: %s [uuid of this host] [interval in seconds]\n" $(basename $0) >&2

}

if [ -z $1 ]; then
  usage
  exit 2
fi

if [ -z $2 ]; then
  usage
  exit 3
fi

file=/opt/xensource/bin/heartbeat
while true 
do 
  sleep $2

  if [ ! -f $file  ]
  then
    continue
  fi

  # for iscsi
  dirs=$(cat $file | grep VG_XenStorage)
  for dir in $dirs
  do
    if [ -d $dir ]; then
      hb=$dir/hb-$1
      date +%s | dd of=$hb count=100 bs=1 2>/dev/null
      if [ $? -ne 0 ]; then
          /usr/bin/logger -t heartbeat "Problem with $hb"
          reboot -f
      fi
    else
      sed -i /${dir##/*/}/d $file
    fi
  done
  # for nfs
  dirs=$(cat $file | grep sr-mount)
  for dir in $dirs
  do
    mp=`mount | grep $dir`
    if [ -n "$mp" ]; then
      hb=$dir/hb-$1
      date +%s | dd of=$hb count=100 bs=1 2>/dev/null
      if [ $? -ne 0 ]; then
          /usr/bin/logger -t heartbeat "Problem with $hb"
          reboot -f
      fi
    else
      sed -i /${dir##/*/}/d $file
    fi
  done

done