diff --git a/.gitignore b/.gitignore
index e71124b..b9b3150 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 *.o
 *.d
 *.so
-func_test
-zvfs_meta.txt
\ No newline at end of file
+zvfs/func_test
+zvfs_meta.txt
+zvfs/zvfs_meta.txt
\ No newline at end of file
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..601522f
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "spdk"]
+	path = spdk
+	url = https://github.com/spdk/spdk.git
+	branch = v24.05
diff --git a/Makefile b/Makefile
old mode 100755
new mode 100644
index c54e550..ed1a695
--- a/Makefile
+++ b/Makefile
@@ -1,37 +1,9 @@
-#  SPDX-License-Identifier: BSD-3-Clause
-#  Copyright (C) 2017 Intel Corporation
-#  All rights reserved.
-#
+.PHONY: all clean zvfs
 
-SPDK_ROOT_DIR := $(abspath $(CURDIR)/../spdk)
-include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
-include $(SPDK_ROOT_DIR)/mk/spdk.modules.mk
-include $(SPDK_ROOT_DIR)/mk/spdk.app_vars.mk
+all: zvfs
 
-LIBZVFS := libzvfs.so
-APP := func_test
-
-C_SRCS := zvfs.c zvfs_hook.c
-
-SPDK_LIB_LIST = $(ALL_MODULES_LIST) event event_bdev
-
-LIBS += $(SPDK_LIB_LINKER_ARGS)
-LDFLAGS += -shared -rdynamic -Wl,-z,nodelete -Wl,--disable-new-dtags \
-	-Wl,-rpath,$(SPDK_ROOT_DIR)/build/lib \
-	-Wl,-rpath,$(SPDK_ROOT_DIR)/dpdk/build/lib
-SYS_LIBS += -ldl
-
-all: $(LIBZVFS) $(APP)
-	@:
-	rm -rf zvfs_meta.txt
-
-$(LIBZVFS): $(OBJS) $(SPDK_LIB_FILES) $(ENV_LIBS)
-	$(LINK_C)
-
-$(APP): func_test.c
-	$(CC) -o $@ $<
+zvfs:
+	$(MAKE) -C zvfs
 
 clean:
-	$(CLEAN_C) $(LIBZVFS) $(APP)
-
-include $(SPDK_ROOT_DIR)/mk/spdk.deps.mk
+	$(MAKE) -C zvfs clean
\ No newline at end of file
diff --git a/README.md b/README.md
index e7b00e0..36eed8c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 
 ## usage
 ```shell
+git submodule update --init --recursive
+
 cd /home/lian/share/10.1-spdk/spdk
 ./configure --with-shared
 make -j
@@ -23,15 +25,15 @@ zvfs的测试结果：
 1. iosize = 4K：95MiB/s
 2. ioszie = 128K：1662MiB/s
 
-相当于spdk读写的90%性能。
+相当于spdk测试工具读写的90%性能。
 
 对比系统调用：
 1. O_DIRECT
-    1. 大块：43MiB/s
-    2. 小块：724MiB/s
+    1. 大块4K：43MiB/s
+    2. 小块128K：724MiB/s
 2. !O_DIRECT
-    1. 大块：1460MiB/s
-    2. 小块：1266MiB/s
+    1. 大块4K：1460MiB/s
+    2. 小块128K：1266MiB/s
 
 ### spdk_nvme_perf 性能基准测试
 ```shell 
diff --git a/spdk b/spdk
new file mode 160000
index 0000000..40a5c21
--- /dev/null
+++ b/spdk
@@ -0,0 +1 @@
+Subproject commit 40a5c2189767d8624461ce1066219124ea17471e
diff --git a/zvfs/Makefile b/zvfs/Makefile
new file mode 100755
index 0000000..5844fa3
--- /dev/null
+++ b/zvfs/Makefile
@@ -0,0 +1,37 @@
+#  SPDX-License-Identifier: BSD-3-Clause
+#  Copyright (C) 2017 Intel Corporation
+#  All rights reserved.
+#
+
+SPDK_ROOT_DIR := $(abspath $(CURDIR)/../spdk)
+include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
+include $(SPDK_ROOT_DIR)/mk/spdk.modules.mk
+include $(SPDK_ROOT_DIR)/mk/spdk.app_vars.mk
+
+LIBZVFS := libzvfs.so
+APP := func_test
+
+C_SRCS := zvfs.c zvfs_hook.c
+
+SPDK_LIB_LIST = $(ALL_MODULES_LIST) event event_bdev
+
+LIBS += $(SPDK_LIB_LINKER_ARGS)
+LDFLAGS += -shared -rdynamic -Wl,-z,nodelete -Wl,--disable-new-dtags \
+	-Wl,-rpath,$(SPDK_ROOT_DIR)/build/lib \
+	-Wl,-rpath,$(SPDK_ROOT_DIR)/dpdk/build/lib
+SYS_LIBS += -ldl
+
+
+all: $(LIBZVFS) $(APP)
+	@:
+
+$(LIBZVFS): $(OBJS) $(SPDK_LIB_FILES) $(ENV_LIBS)
+	$(LINK_C)
+
+$(APP): func_test.c
+	$(CC) -o $@ $<
+
+clean:
+	$(CLEAN_C) $(LIBZVFS) $(APP)
+
+include $(SPDK_ROOT_DIR)/mk/spdk.deps.mk
diff --git a/fio_script/bdev.fio b/zvfs/fio_script/bdev.fio
similarity index 100%
rename from fio_script/bdev.fio
rename to zvfs/fio_script/bdev.fio
diff --git a/fio_script/io_uring.fio b/zvfs/fio_script/io_uring.fio
similarity index 100%
rename from fio_script/io_uring.fio
rename to zvfs/fio_script/io_uring.fio
diff --git a/fio_script/kingfs b/zvfs/fio_script/kingfs
similarity index 100%
rename from fio_script/kingfs
rename to zvfs/fio_script/kingfs
diff --git a/fio_script/libaio.fio b/zvfs/fio_script/libaio.fio
similarity index 100%
rename from fio_script/libaio.fio
rename to zvfs/fio_script/libaio.fio
diff --git a/fio_script/nvme.fio b/zvfs/fio_script/nvme.fio
similarity index 100%
rename from fio_script/nvme.fio
rename to zvfs/fio_script/nvme.fio
diff --git a/fio_script/psync.fio b/zvfs/fio_script/psync.fio
similarity index 100%
rename from fio_script/psync.fio
rename to zvfs/fio_script/psync.fio
diff --git a/fio_script/zvfs.json b/zvfs/fio_script/zvfs.json
similarity index 100%
rename from fio_script/zvfs.json
rename to zvfs/fio_script/zvfs.json
diff --git a/func_test.c b/zvfs/func_test.c
similarity index 99%
rename from func_test.c
rename to zvfs/func_test.c
index c4f4443..fd27b30 100644
--- a/func_test.c
+++ b/zvfs/func_test.c
@@ -16,8 +16,8 @@ static double time_diff_sec(struct timespec a, struct timespec b)
 
 static int test_single_file_perf(const char *path)
 {
-    // size_t io_size   = 128 * 1024;
-    size_t io_size   = 4096;
+    size_t io_size   = 128 * 1024;
+    // size_t io_size   = 4096;
     size_t max_size  = 2ULL * 1024 * 1024 * 1024;  /* 最大 2GB，循环覆写 */
     size_t max_count = max_size / io_size;
     int    test_sec  = 10;
diff --git a/zvfs.c b/zvfs/zvfs.c
similarity index 96%
rename from zvfs.c
rename to zvfs/zvfs.c
index 6c67f59..b34c09b 100755
--- a/zvfs.c
+++ b/zvfs/zvfs.c
@@ -10,7 +10,7 @@
 #endif
 
 struct spdk_thread *global_thread = NULL;
-const char *json_file = "/home/lian/share/10.1-spdk/zvfs/zvfs.json";
+const char *json_file = "/home/lian/share/10.1-spdk/zvfs/zvfs/zvfs.json";
 
 // mount
 void zvfs_do_mount(void *arg);
@@ -599,7 +599,7 @@ int zvfs_env_setup(void) {
         return -1;
     }
 
-	spdk_log_set_print_level(SPDK_LOG_NOTICE);
+	spdk_log_set_print_level(SPDK_LOG_ERROR);
 	spdk_log_set_level(SPDK_LOG_NOTICE);
 	spdk_log_open(NULL);
 
diff --git a/zvfs.h b/zvfs/zvfs.h
similarity index 100%
rename from zvfs.h
rename to zvfs/zvfs.h
diff --git a/zvfs.json b/zvfs/zvfs.json
similarity index 100%
rename from zvfs.json
rename to zvfs/zvfs.json
diff --git a/zvfs.old/Makefile b/zvfs/zvfs.old/Makefile
similarity index 100%
rename from zvfs.old/Makefile
rename to zvfs/zvfs.old/Makefile
diff --git a/zvfs.old/zvfs.c b/zvfs/zvfs.old/zvfs.c
similarity index 100%
rename from zvfs.old/zvfs.c
rename to zvfs/zvfs.old/zvfs.c
diff --git a/zvfs.old/zvfs.json b/zvfs/zvfs.old/zvfs.json
similarity index 100%
rename from zvfs.old/zvfs.json
rename to zvfs/zvfs.old/zvfs.json
diff --git a/zvfs.old/zvfs.old.c b/zvfs/zvfs.old/zvfs.old.c
similarity index 100%
rename from zvfs.old/zvfs.old.c
rename to zvfs/zvfs.old/zvfs.old.c
diff --git a/zvfs_hook.c b/zvfs/zvfs_hook.c
similarity index 100%
rename from zvfs_hook.c
rename to zvfs/zvfs_hook.c