#!/bin/bash
if [ -z $1 -o -z $2 ]
then
         echo "Usage: vzbackup CTID BACKUP-PATH"
         exit 1
fi

CTID=$1
FOLDER=$2
BACKUPPATH=$FOLDER/$CTID-$(date +%F_%H_%M)

#create BACKUP-PATH
mkdir -p $BACKUPPATH

# Known snapshot ID
ID=$(uuidgen)
VE_PRIVATE=$(vzlist -H -o private $CTID)

# Take a snapshot without suspending a CT and saving its config
vzctl snapshot $CTID --id $ID

# Perform a backup using your favorite backup tool
# (cp is just an example)
cp -r $VE_PRIVATE/root.hdd/* $BACKUPPATH/

# Delete (merge) the snapshot
vzctl snapshot-delete $CTID --id $ID

# remove old backups
rm -rf $( find $FOLDER -type d -name "$CTID*" -exec ls -d1rt "{}" + | head -n-4  )

echo "BACKUP FINISHED."