--- /usr/sbin/univention-samba4-backup	2022-11-21 10:23:01.000000000 +0100
+++ univention-samba4-backup	2022-12-27 14:06:25.388375524 +0100
@@ -129,7 +129,7 @@
 
 cd $FROMWHERE
 for d in $DIRS; do
-	relativedirname=`find . -type d -name "$d" -prune`
+	relativedirname=`find . -maxdepth 1 -type d -name "$d" -prune` # IMPORTANT: added -maxdepth 1 to avoid getting other dirs called "private" further down the tree, e.g. deep in the sysvol dir
 	n=`echo $d | sed 's/\//_/g'`
 	if [ "$d" = "private" ]; then
 		for db in tdb ldb; do
@@ -143,7 +143,12 @@
 					tdbbackup $file
 					Status=$?
 					if [ $Status -ne 0 ]; then
-						terminate_on_error "Error while backing up $file with tdbbackup - status $Status"
+						echo "Error while backing up $file with tdbbackup - status $Status - will try mdb_copy in case MDB format is used" >&2
+						mdb_copy -c -n $file > $file.bak
+						Status=$?
+						if [ $Status -ne 0 ]; then
+						    terminate_on_error "Error while backing up $file with mdb_copy - status $Status"
+						fi
 					fi
 				fi
 			done