Index: scripts/wsrep_sst_mariabackup.sh
--- scripts/wsrep_sst_mariabackup.sh.orig
+++ scripts/wsrep_sst_mariabackup.sh
@@ -33,6 +33,18 @@ if [ -z "$BACKUP_BIN" ]; then
     exit 42
 fi
 
+GFIND_BIN=$(commandex 'gfind')
+if [ -z "$GFIND_BIN" ]; then
+    wsrep_log_error 'gfind binary not found in path'
+    exit 42
+fi
+
+GDU_BIN=$(commandex 'gdu')
+if [ -z "$GDU_BIN" ]; then
+    wsrep_log_error 'gdu binary not found in path'
+    exit 42
+fi
+
 BACKUP_PID=""
 
 INFO_FILE='mariadb_backup_galera_info'