backup_xenserver_vms_snapshot

#!/bin/bash
#this basic script is created to take xenserver guest backup using snapshots
#it will first of all create a snapshot for a specific vm, convert that snapshot to template, take backup of template & delete it
#ths script is tested only on standalone server NOT ON SERVER POOL


PATH=/opt/xensource/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
export PATH
mount vms-backup.example.sk:/nfs/backup /mnt/nfs
BACKDATE=`date +%Y-%m-%d`
ADMIN=admin@example.com
BACKDIR=/mnt/nfs/$HOSTNAME/$BACKDATE
tmp=/mnt/nfs/$HOSTNAME/xen_back1
hostuuid=`xe host-list | grep uuid | awk -F': ' '{print$2 }'`

#create backup dir
if [ -d $BACKDIR ]
        then
                echo -e "$BACKDIR Exists \n" 
        else
                echo -e "$BACKDIR does not Exists, Creating \n"
                mkdir -p $BACKDIR
fi

log=$BACKDIR/xen_back.mail
echo -e "subject: backup done on $HOSTNAME \n" > $log
date >> $log

#backup xenserver itself
echo -e "\nBackup Xenserver at " >> $log
date >> $log
xe host-backup file-name=$BACKDIR/host-backup.bak host=$hostuuid

if [ $? -eq 0 ]
then
echo -e "backup xenserver was sucessfully " >> $log
else
echo -e "backup xenserver failed" >> $log
fi
date >> $log

#backup metadata - pool-database
xe pool-dump-database file-name=$BACKDIR/pool-dump-database.bak
if [ $? -eq 0 ]
then
echo -e "pool-dump-database was sucessfully " >> $log
else
echo -e "pool-dump-database failed " >> $log
fi
date >> $log

#generate list of RUNNING VM ONLY
echo "Generating List of Running VMs"
xe vm-list power-state=running|grep name-label| grep -v "Control domain on host:"  | sed 's/     name-label ( RW): //g' > $tmp
echo -e "\n List of the running VMs on host" >> $log
cat $tmp  >> $log

if [ $? -eq 0 ]
then
echo -e "vm list sucessfully generated \n" >> $log
else
echo -e "vm list failed \n" >> $log
fi


vms=( centos-6-5 centos-6-6 centos-7-0 )

echo -e "Vms going to backup: "${vms[@]}" \n" >> log

for VM in "${vms[@]}"
do
echo -e " \n " >> $log
echo $VM >> $log
        #create snapshot
        echo "Creating Snapshot for $VM" >> $log
        SNAPSHOT=`xe vm-snapshot vm="$VM"  new-name-label="$VM"-$BACKDATE new-name-description="temporary snapshot" `
                if [ $? -eq 0 ]
                                then
                                                echo -e "Snapshot for $VM Sucessfully created " >> $log
                                else
                                                echo -e "Snapshot for $VM FAILED " >>$log
                fi
#set snapshot as template
        echo "Setting snapshot $SNAPSHOT as Template for $VM backup \n" >>$log
        xe template-param-set is-a-template=false uuid=$SNAPSHOT
                if [ $? -eq 0 ]
                                then
                                                echo -e "Setting snapshot $SNAPSHOT as Template for $VM backup was SUCESSFULL " >>$log
                                else
                                                echo -e "Setting snapshot $SNAPSHOT as Template for $VM backup was FAILED " >>$log
                fi
        #backup from snapshot
        echo "Backing $SNAPSHOT for $VM"
        date >> $log
        echo "Export UUID=$SNAPSHOT" >>$log
        xe vm-export vm=$SNAPSHOT compress=false filename= |  pigz -6 > $BACKDIR/"$VM".gz
        date >> $log
        uninstall snapshot template
        echo "Removing $SNAPSHOT for $VM"
        echo "Remove UUID=$SNAPSHOT">>$log
        xe vm-uninstall uuid=$SNAPSHOT force=true
                if [ $? -eq 0 ]
                                then
                                                echo -e "Uninstall of temporary snapshot $SNAPSHOT for $VM was SUCESSFULL " >>$log
                                else
                                                echo -e "Uninstall of temporary snapshot $SNAPSHOT for $VM was FAILED " >>$log
                fi


echo $VM
done
date >> $log
cat $log | sendmail $ADMIN
rm -rf cat $tmp
umount /mnt/nfs
exit 0