Revert "instead of cloning we stop containers now"

This reverts commit 517777f38f.

lxc_backup.sh

@@ -23,9 +23,10 @@ fi
 #only backup container which doesn't contain a 0 at the endps
 for container in $(${lxccmd} list --format csv -c n | grep -v "0$");
 do 
-	${lxccmd} stop ${container}
-	${lxccmd} export ${container} ${backuppath}$(date +%Y_%m_%d)-lxc-${container}.tar.gz --instance-only
-	${lxccmd} start ${container}
+	${lxccmd} copy ${container} ${container}-backup
+	${lxccmd} export ${container}-backup ${backuppath}$(date +%Y_%m_%d)-lxc-${container}.tar.gz --instance-only --optimized-storage
+        ${lxccmd} config set ${container}-backup security.protection.delete false
+	${lxccmd} delete ${container}-backup
 done
 
 #housekeeping - keep last 14 days