fix: skip access checks further for known buckets (#17934)

cmd/metacache-walk.go

@@ -69,14 +69,16 @@ func (s *xlStorage) WalkDir(ctx context.Context, opts WalkDirOptions, wr io.Writ
 		return err
 	}
 
-	// Stat a volume entry.
-	if err = Access(volumeDir); err != nil {
-		if osIsNotExist(err) {
-			return errVolumeNotFound
-		} else if isSysErrIO(err) {
-			return errFaultyDisk
+	if !skipAccessChecks(opts.Bucket) {
+		// Stat a volume entry.
+		if err = Access(volumeDir); err != nil {
+			if osIsNotExist(err) {
+				return errVolumeNotFound
+			} else if isSysErrIO(err) {
+				return errFaultyDisk
+			}
+			return err
 		}
-		return err
 	}
 
 	s.RLock()