diff --git a/lib/bdev/raid/bdev_raid.c b/lib/bdev/raid/bdev_raid.c
index 6e74baed8..995ee73db 100644
--- a/lib/bdev/raid/bdev_raid.c
+++ b/lib/bdev/raid/bdev_raid.c
@@ -742,6 +742,13 @@ _raid_bdev_submit_null_payload_request_next(void *_bdev_io)
 						     raid_bdev_base_io_completion, bdev_io);
 			break;
 
+		case SPDK_BDEV_IO_TYPE_FLUSH:
+			ret = spdk_bdev_flush_blocks(raid_bdev->base_bdev_info[disk_idx].desc,
+						     raid_ch->base_channel[disk_idx],
+						     offset_in_disk, nblocks_in_disk,
+						     raid_bdev_base_io_completion, bdev_io);
+			break;
+
 		default:
 			SPDK_ERRLOG("submit request, invalid io type with null payload %u\n", bdev_io->type);
 			assert(false);
@@ -835,15 +842,11 @@ raid_bdev_submit_request(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev_i
 		raid_bdev_start_rw_request(ch, bdev_io);
 		break;
 
-	case SPDK_BDEV_IO_TYPE_FLUSH:
-		/* TODO: support flush if requirement comes */
-		spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_SUCCESS);
-		break;
-
 	case SPDK_BDEV_IO_TYPE_RESET:
 		_raid_bdev_submit_reset_request(ch, bdev_io);
 		break;
 
+	case SPDK_BDEV_IO_TYPE_FLUSH:
 	case SPDK_BDEV_IO_TYPE_UNMAP:
 		_raid_bdev_submit_null_payload_request(ch, bdev_io);
 		break;
diff --git a/test/unit/lib/bdev/bdev_raid.c/bdev_raid_ut.c b/test/unit/lib/bdev/bdev_raid.c/bdev_raid_ut.c
index eebfe2ce5..f84394a23 100644
--- a/test/unit/lib/bdev/bdev_raid.c/bdev_raid_ut.c
+++ b/test/unit/lib/bdev/bdev_raid.c/bdev_raid_ut.c
@@ -306,6 +306,14 @@ spdk_bdev_unmap_blocks(struct spdk_bdev_desc *desc, struct spdk_io_channel *ch,
 	return g_bdev_io_submit_status;
 }
 
+int
+spdk_bdev_flush_blocks(struct spdk_bdev_desc *desc, struct spdk_io_channel *ch,
+		       uint64_t offset_blocks, uint64_t num_blocks,
+		       spdk_bdev_io_completion_cb cb, void *cb_arg)
+{
+	return 0;
+}
+
 bool
 spdk_bdev_io_type_supported(struct spdk_bdev *bdev, enum spdk_bdev_io_type io_type)
 {