My oldest python script...

backupxfs.py

#! /usr/bin/python
# -*- coding: utf-8 -*-
##############################################################
# Programa para Backup de Partições XFS.
# André Filipe de Assuncao e Brito (decko@noisemakers.org)
# Fabricio Coutinho Medeiros (fabriciocoutinho@terra.com.br)
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
##############################################################

import os, sys, time

EMAILADMIN='decko@stacasa.dom.br;fabricio@stacasa.dom.br' #Email dos administradores do sistema para receberem uma copia do log
DEVICEDEST='/home' #Dispositivo ou arquivo de destino do backup
DEVICEORIG='/home' #Diretorio de Origem do Backup. XFS Obrigatoriamente.
DEVICETAPE='/dev/tape'
BKPFITA='0' #1 se o backup for em fita magnetica, 0 se for em um arquivo.

def diahoje():
	epoch=time.time()
	localtime=time.localtime(epoch)
	return time.strftime('%d', localtime)

def datacompleta():
	epoch=time.time()
	localtime=time.localtime(epoch)
	return time.strftime('%b-%Y', localtime)

def default(DEVICEORIG,DEVICEDEST,DEVICETAPE,BKPFITA):
	print "Modo padrão de backup"
	HOJE = diahoje()
	DATA = datacompleta()
	HOME = os.getenv('HOME')
	BKDST = DEVICEDEST + HOJE + DATA + '.xfsdump'
	LOG=open(HOME + '/' + HOJE + '-' + DATA + '.log','w')
	if HOJE == 1:
		if BKPFITA == "0":
			xfs=os.popen('xfsdump -l 0 -p 2 -L ' + HOJE + DATA + ' ' + '-M file -f ' + DEVICEDEST + BKDST + 'l0' + ' ' + DEVICEORIG)
			for line in xfs.readlines():
				print line,
				LOG.write(line)
		else:
			xfs=os.popen('xfsdump -l 0 -p 2 -L ' + HOJE + DATA + ' ' + '-M tape -f ' + DEVICETAPE + ' ' + DEVICEORIG)
			for line in xfs.readlines():
				print line,
				LOG.write(line)
	else:
		if BKPFITA == "0":
			xfs=os.popen('xfsdump -l 1 -p 2 -L ' + HOJE + DATA + ' ' + '-M file -f ' + DEVICEDEST + BKDST + 'l1' + ' ' + DEVICEORIG)
			for line in xfs.readlines():
				print line,
				LOG.write(line)
		else:
			xfs=os.popen('xfsdump -l 1 -p 2 -L ' + HOJE + DATA + ' ' + '-M file -f ' + DEVICETAPE + ' ' + DEVICEORIG)
			for line in xfs.readlines():
				print line,
				LOG.write(line)

if __name__ == '__main__':
	print sys.copyright
	print "Backup system by André Filipe e Fabricio Coutinho"
	if len(sys.argv) != 1:
		print "Use: %s" % sys.argv[0]
	else:
		default(DEVICEORIG,DEVICEDEST,DEVICETAPE,BKPFITA)

Nice, Thanks
what about increment to -l 2,-l3,-l4 etc