Backup DomU xen over drbd over lvm

#!/bin/bash

# backup.sh DRBD DOMU SNAPSHOT_SIZE VG LVM LVM_SIZE
SMBCLIENT_CONFIG="/etc/xen/scripts/.smbclient"
LOCAL_BACKUP_DIR="/tmp"

DRBD=$1
DOMU=$2
SNAPSHOT_SIZE=$3
VG=$4
LVM=$5
LVM_SIZE=$6
TYPE=$7


DRBD_state=$(echo "$(drbdadm state $DRBD)"|sed -e 's/\/[A-Z][a-z]*//')

if [ $DRBD_state = "Primary" ]; then
    lvcreate --size $SNAPSHOT_SIZE --snapshot --name $LVM-snapshot /dev/$VG/$LVM
    BACKUP_FILE=$DOMU-$LVM_SIZE-$TYPE.gz
    dd if=/dev/$VG/$LVM bs=1024000 | pbzip2 -cf > $LOCAL_BACKUP_DIR/$BACKUP_FILE
    lvremove --force /dev/$VG/$LVM-snapshot
    smbclient //172.16.0.146/backup -A $SMBCLIENT_CONFIG -c "put $LOCAL_BACKUP_DIR/$BACKUP_FILE /lvm-images/$BACKUP_FILE"
    rm $LOCAL_BACKUP_DIR/$BACKUP_FILE
fi


# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.

SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# m h dom mon dow user  command
17 *    * * *   root    cd / && run-parts --report /etc/cron.hourly
25 6    * * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
47 6    * * 7   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
52 6    1 * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
#

#GFS backup strategy
# backup.sh DRBD DOMU SNAPSHOT_SIZE VG LVM LVM_SIZE
00 01    * * *   root    /etc/xen/scripts/backup.sh xen-drbd-portal portal 3G xen_vg1 portal 30G nightly-`uname -n`
00 02    * * 6   root    /etc/xen/scripts/backup.sh xen-drbd-portal portal 3G xen_vg1 portal 30G weekly-`uname -n`
00 03    1 * *   root    /etc/xen/scripts/backup.sh xen-drbd-portal portal 3G xen_vg1 portal 30G monthly-`uname -n`
00 04    * 1,6 *   root    /etc/xen/scripts/backup.sh xen-drbd-portal portal 3G xen_vg1 portal 30G archive-`uname -n`-`date +\%m.\%Y`

15 01    * * *   root    /etc/xen/scripts/backup.sh xen-drbd-ideco xen-drbd-ideco ideco 1G xen_vg2 ideco 4G nightly-`uname -n`
15 02    * * 6   root    /etc/xen/scripts/backup.sh xen-drbd-ideco xen-drbd-ideco ideco 1G xen_vg2 ideco 4G weekly-`uname -n`
15 03    1 * *   root    /etc/xen/scripts/backup.sh xen-drbd-ideco xen-drbd-ideco ideco 1G xen_vg2 ideco 4G monthly-`uname -n`
15 04    * 1,6 *   root    /etc/xen/scripts/backup.sh xen-drbd-ideco xen-drbd-ideco ideco 1G xen_vg2 ideco 4G archive-`uname -n`-`date +\%m.\%Y`