amelioration script vmbackup

vmbackup.sh

@@ -3,19 +3,31 @@
 set -e
 set -u
 
-outputdir=/mnt/backups/vms
-if [ ! -d $outputdir ] ; then
-	echo outputdir not mounted
-	exit 41
+statusfile=/home/cig/vmbackup.status
+basedir=/mnt/backups/vms
+
+_exit () {
+	echo $1 > $statusfile
+	exit $1
+}
+
+_mail () {
+	echo "$@" | mail -s "$(hostname -f) : vm backup error" root
+}
+
+mount /mnt/backups &> /dev/null
+
+if [ ! -d $basedir ] ; then
+	_mail Dir $basedir not mounted
+	_exit 41
 fi
 
-outputdir=${outputdir}/$(date -I)
-mkdir -p ${outputdir}
+outputdir=${basedir}/$(date -I)
 
 if [ $# -ne 1 ] ; then                                                          
 	echo "Usage: $O vm"                                                          
 	echo "Stop, backup and start given vm"                                       
-	exit 42                                                                      
+	_exit 42                                                                      
 fi                                                                              
 
 function checkRunning {
@@ -26,11 +38,21 @@ function checkRunning {
 
 machine=$1
 if ( checkRunning $machine ) ; then
+	mkdir -p ${outputdir}
+	cp -ar ${basedir}/current/. --target-directory=${outputdir}
+	mv ${basedir}/current ${basedir}/old
+	ln -s ${outputdir} ${basedir}/current
+	test $? -eq 0 || { _mail "erreur de copie" ; _exit 44 ; }
 	vboxmanage controlvm $machine acpipowerbutton shutdown
 	sleep 60
-	echo rsync -a /srv/VM/Win/roofline ${outputdir}/
+	rsync --inplace -a /srv/VM/Win/roofline ${outputdir}/
 	ret=$?
-	vboxmanager start $machine
-	exit $ret
+	test $ret -eq 0 || _mail "rsync error $ret"
+	vboxmanage startvm $machine
+	ln -s ${outputdir} ${basedir}/current
+	test $ret -eq 0 && find ${basedir} -maxdepth 1 -type d -mtime +7 -exec echo rm -fr {} \;
+	umount /mnt/backups &> /dev/null
+	_exit $ret
 fi 
-exit 43
+_mail "vm $machine not running"
+_exit 43