shutdown_xenserver

#!/bin/sh
/root/./first_mail.sh
log=/var/log/shutdown.txt
echo " " > $log
date >> $log
echo " " >> $log
echo "listing vms in running-state" >> $log
echo " " >> $log
xe vm-list power-state=running >> $log
#Routine  to shutdown all VMs running on a host
echo "Shutting down vms" | wall
echo "Shutting down vms" >> $log
echo " " >> $log

for x in 1 2
do
a=`xe vm-list power-state=running | grep uuid | awk -F': ' '{print$2 }'`
b=`xe vm-list power-state=running | grep Control -B1 | grep uuid | awk -F': ' '{print$2 }'`
c=`echo ${a/$b/}`
        for i in $c
                do
                date >> $log
                echo "shutting down machine with uuid $i" >> $log
                xe vm-shutdown force=false uuid=$i &
                sleep 10
                echo " " >> $log
        done
echo "pass of $x cycle to shutdown vms" >> $log
echo " " >> $log
done

echo "pass 2 cycles without force parameter, starting with force parameter" >> $log
date >> $log
sleep 15
a=`xe vm-list power-state=running | grep uuid | awk -F': ' '{print$2 }'`
b=`xe vm-list power-state=running | grep Control -B1 | grep uuid | awk -F': ' '{print$2 }'`
c=`echo ${a/$b/}`


for i in $c
                do
                echo " " >> $log
                date >> $log
                echo "doing force shutdown machines with uuid $i" >> $log
                xe vm-shutdown force=true uuid=$i
                sleep 5
                echo " " >> $log
        done
echo " " >> $log

#prepare shutdown of xenserver
hostuuid=`xe host-list | grep uuid | awk -F': ' '{print$2 }'`
echo " "
echo "shutdown servera will begin  in 20 seconds" >> $log
sleep 15
xe host-disable uuid=$hostuuid
sleep 5
echo " "
date >> $log
echo "shutdown began" | wall
echo "script is ending" >> $log
/root/./last_mail.sh
xe host-shutdown host=$hostuuid >> $log
exit 0