dsnap-sync: cleanup verify_snapper_structure()

* only create target path, if base_path isn't empty

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

bin/dsnap-sync

@@ -324,7 +324,7 @@ get_media_infos () {
 	if [ $? -eq 0 ]; then
 	    target_cmdline=$ltfs_mountpoint
 	    if  [ ${#volume_name} -eq 0 ]; then
-		#tape-admin --verbose=$verbose --ltfs-getattribute
+		# parse out volume-name (fuse - extended attribute)
 		volume_name=$($ssh attr -g ltfs.volumeName $ltfs_mountpoint)
 		volume_name=$(echo ${volume_name##*:} | sed -e 's/\r\n//g')
 	    fi
@@ -2628,7 +2628,8 @@ verify_snapper_structure () {
 		fi
 	    fi
 	    # strip last dir from backup_root
-	    base_path=${backup_root%/*}; echo $base_path
+	    base_path=${backup_root%/*}
+	    if [ ${#base_path} -ge 1 }; then
 		if [ $dryrun -eq 0 ]; then
 		    $($ssh mkdir --mode=0700 --parents $base_path)
 		    if [ $verbose -ge 3 ]; then
@@ -2651,6 +2652,7 @@ verify_snapper_structure () {
 		fi
 	    fi
 	fi
+    fi
 
     # verify that we have a snapper compatible structure for target config (a btrfs subvolume)
     cmd="$ssh stat --format %i $backup_root 2>/dev/null"