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2b41f98346
When storage cannot be reached, it does not make sense to reboot as it will try to flush buffers, umount NFS mounts, etc. This will not work and thus cause a long delay. With this change, the box will reboot immediately (like pressing the reset button).
164 lines
3.1 KiB
Bash
Executable File
164 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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help() {
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printf "Usage: $0
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-i nfs server ip
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-p nfs server path
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-m mount point
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-h host
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-r write/read hb log
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-c cleanup
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-t interval between read hb log\n"
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exit 1
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}
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#set -x
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NfsSvrIP=
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NfsSvrPath=
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MountPoint=
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HostIP=
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interval=
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rflag=0
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cflag=0
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while getopts 'i:p:m:h:t:rc' OPTION
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do
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case $OPTION in
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i)
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NfsSvrIP="$OPTARG"
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;;
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p)
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NfsSvrPath="$OPTARG"
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;;
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m)
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MountPoint="$OPTARG"
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;;
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h)
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HostIP="$OPTARG"
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;;
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r)
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rflag=1
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;;
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t)
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interval="$OPTARG"
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;;
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c)
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cflag=1
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;;
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*)
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help
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;;
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esac
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done
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if [ -z "$NfsSvrIP" ]
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then
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exit 1
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fi
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#delete VMs on this mountpoint
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deleteVMs() {
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local mountPoint=$1
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vmPids=$(ps aux| grep qemu | grep "$mountPoint" | awk '{print $2}' 2> /dev/null)
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if [ $? -gt 0 ]
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then
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return
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fi
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if [ -z "$vmPids" ]
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then
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return
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fi
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for pid in $vmPids
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do
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kill -9 $pid &> /dev/null
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done
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}
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#checking is there the same nfs server mounted under $MountPoint?
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mounts=$(cat /proc/mounts |grep nfs|grep $MountPoint)
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if [ $? -gt 0 ]
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then
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# remount it
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mount $NfsSvrIP:$NfsSvrPath $MountPoint -o sync,soft,proto=tcp,acregmin=0,acregmax=0,acdirmin=0,acdirmax=0,noac,timeo=133,retrans=10 &> /dev/null
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if [ $? -gt 0 ]
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then
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printf "Failed to remount $NfsSvrIP:$NfsSvrPath under $MountPoint"
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exit 1
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fi
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if [ "$rflag" == "0" ]
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then
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deleteVMs $MountPoint
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fi
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fi
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hbFolder=$MountPoint/KVMHA/
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hbFile=$hbFolder/hb-$HostIP
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write_hbLog() {
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#write the heart beat log
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stat $hbFile &> /dev/null
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if [ $? -gt 0 ]
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then
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# create a new one
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mkdir -p $hbFolder &> /dev/null
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touch $hbFile &> /dev/null
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if [ $? -gt 0 ]
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then
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printf "Failed to create $hbFile"
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return 2
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fi
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fi
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timestamp=$(date +%s)
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echo $timestamp > $hbFile
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return $?
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}
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check_hbLog() {
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now=$(date +%s)
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hb=$(cat $hbFile)
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diff=`expr $now - $hb`
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if [ $diff -gt $interval ]
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then
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return 1
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fi
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return 0
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}
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if [ "$rflag" == "1" ]
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then
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check_hbLog
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if [ $? == 0 ]
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then
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echo "=====> ALIVE <====="
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else
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echo "=====> DEAD <======"
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fi
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exit 0
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elif [ "$cflag" == "1" ]
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then
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echo b > /proc/sysrq-trigger
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exit $?
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else
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write_hbLog
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exit $?
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fi
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