Brenn Oosterbaan e8b6f66582 Review 9647: In some storage failure scenario’s the NFS timeout can
cause writing the heartbeat to take longer than expected. By comparing
the last successful heartbeat epoch with the current epoch we check if
the timeout value has been met.
2013-03-05 15:38:54 +01:00

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#!/bin/bash
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with 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.
#set -x
usage() {
printf "Usage: %s [uuid of this host] [timeout in seconds] [interval in seconds]\n" $(basename $0) >&2
}
if [ -z $1 ]; then
usage
exit 2
fi
if [ -z $2 ]; then
usage
exit 3
fi
if [ ! -z $3 ]; then
interval=$3
else
interval=5
fi
if [ $interval -gt $2 ]; then
usage
exit 3
fi
file=/opt/xensource/bin/heartbeat
lastdate=$(($(date +%s) + $interval))
while [ $(date +%s) -lt $(($lastdate + $2)) ]
do
sleep $interval
if [ ! -f $file ]
then
continue
fi
# test heartbeat file
dirs=$(cat $file | grep "sr-mount\|VG_XenStorage")
if [ ! -n "$dirs" ];then
/usr/bin/logger -t heartbeat "Problem with heartbeat, no iSCSI or NFS mount defined in $file!"
lastdate=$(date +%s)
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 "Potential problem with $hb: not reachable since $(($(date +%s) - $lastdate)) seconds"
else
lastdate=$(date +%s)
fi
else
/usr/bin/logger -t heartbeat "Potential problem with heartbeat, dir not found for $dir"
lastdate=$(date +%s)
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 "Potential problem with $hb: not reachable since $(($(date +%s) - $lastdate)) seconds"
else
lastdate=$(date +%s)
fi
else
/usr/bin/logger -t heartbeat "Potential problem with heartbeat, mount not found for $dir"
lastdate=$(date +%s)
sed -i /${dir##/*/}/d $file
fi
done
done
/usr/bin/logger -t heartbeat "Problem with $hb: not reachable for $(($(date +%s) - $lastdate)) seconds, rebooting system!"
reboot -f