Create backup for all Citrix Xen vms using temporary snapshots, and upload to a CIFS Share. VMs are compressed using gzip.

xen_vms_backup.sh

#/bin/sh
#
# Script to backup all vms in a Xen Server, to a CIFS Share
#
# Copyright (C) 2011 SIMB Tecnologia Ltda
# Based on post from Amador Pahim: <http://olamundo.org/posts/xenserver-backup-automatico-de-vms>
#
# This is free software, licensed under the GNU General Public License v2.
# See www.gnu.org for more information.

CIFSSHARE="//CIFSSERVER/SHARING"
USER="USERNAME"
PASSWD="PASSWORD"
BACKUPPATH="backup/vms/$(date --date 'now' +%y%m%d)"
IFS="
"


# Mount backup dir
tmpmntdir=$(mktemp -d)
dirBack=${tmpmntdir}/${BACKUPPATH}

mount -t cifs -o username=${USER},password=${PASSWD} ${CIFSSHARE} ${tmpmntdir} && \
                { logger -t "BackupVMs" -s "Mount ${CIFSSHARE} succesfully"; } || \
                { logger -t "BackupVMs" -s "Cannot mount ${CIFSSHARE}, exiting."; exit 1; }

mkdir -p ${dirBack}


vms="$(xe vm-list | grep 'name-label' | grep -v 'Control domain' | tr -s ' ' | cut -d ' ' -f 5)"

for vm in $vms; do
        time=$(date --date "now" +%d-%m-%y_%H-%M)
        snapName=${vm}-${time}
        ID=$(xe vm-snapshot vm=$vm new-name-label=$snapName && \
                { logger -t "BackupVMs" -s "$vm: Created Snapshot successfully"; } || \
                { logger -t "BackupVMs" -s "$vm: Error on creating snapshot, aborting"; continue; })

        [ "$ID" == "1" ] && {  logger -t "BackupVMs" -s "$vm: ID invalido recebido de vm-snapshot"; continue; }
        xe template-param-set is-a-template=false uuid=$ID && \
                { logger -t "BackupVMs" -s "$vm: Created VM successfully"; } || \
                { logger -t "BackupVMs" -s "$vm: Error on creating VM, aborting"; continue; }
        xe vm-export vm="${snapName}"  filename="${dirBack}/${snapName}.xva" && \
                { logger -t "BackupVMs" -s "$vm: Export VM successfully"; } || \
                { logger -t "BackupVMs" -s "$vm: Error on exporting VM, aborting"; continue; }
        xe vm-uninstall vm="${snapName}" force=true && \
                { logger -t "BackupVMs" -s "$vm: Removed VM successfully"; } || \
                { logger -t "BackupVMs" -s "$vm: Error on removing VM, aborting"; continue; }
        gzip "${dirBack}/${snapName}.xva" && \
                { logger -t "BackupVMs" -s "$vm: GZipped VM successfully"; } || \
                { logger -t "BackupVMs" -s "$vm: Error on GZipping VM, aborting"; continue; }
done;


umount ${tmpmntdir}
rmdir ${tmpmntdir}
logger -t "BackupVMs" -s "Backup successfully all VMs";

exit 0;