diff --git a/zv2404fs.c b/zv2404fs.c
index fe90aad..8404f11 100755
--- a/zv2404fs.c
+++ b/zv2404fs.c
@@ -6,12 +6,159 @@
 #include <spdk/blob.h>
 #include <spdk/bdev.h>
 #include <spdk/blob_bdev.h>
+#include <spdk/env.h>
 
 
-void zv2404_spdk_bdev_event_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev,
+
+#define BUFFER_SIZE		512
+
+
+struct spdk_blob_store *blobstore;
+spdk_blob_id blob_id;
+struct spdk_blob *blob;
+uint64_t free_cluster_count;
+uint64_t num_cluster;
+uint8_t *write_buffer;
+uint8_t *read_buffer;
+struct spdk_io_channel *channel;
+
+static void zv2404fs_spdk_bs_unload_cb(void *arg, int bserrno) {
+
+	spdk_app_stop(0);
+
+}
+
+
+static void zv2404fs_spdk_blob_delete_cb(void *arg, int bserrno) {
+
+	if (blobstore) {
+		if (channel) {
+			spdk_bs_free_io_channel(channel);
+		}
+		spdk_bs_unload(blobstore, zv2404fs_spdk_bs_unload_cb, NULL);
+	}
+	
+}
+
+static void zv2404fs_spdk_blob_close_cb(void *arg, int bserrno) {
+
+	spdk_bs_delete_blob(blobstore, blob_id, zv2404fs_spdk_blob_delete_cb, NULL);
+	
+}
+
+
+
+static void zv2404fs_spdk_blob_read_cb(void *arg, int bserrno) {
+
+	SPDK_NOTICELOG("READ BUFFER : %s\n", read_buffer);
+
+	spdk_blob_close(blob, zv2404fs_spdk_blob_close_cb, NULL);
+	
+}
+
+
+static void zv2404fs_spdk_blob_write_cb(void *arg, int bserrno) {
+
+	SPDK_NOTICELOG("WRITE COMPLETE\n");
+
+	uint8_t *rbuffer = spdk_malloc(512, 0x1000, NULL, SPDK_ENV_LCORE_ID_ANY, SPDK_MALLOC_DMA);
+	if (rbuffer == NULL) {
+		spdk_app_stop(0);
+		return ;
+	}
+	memset(rbuffer, 0x0, BUFFER_SIZE);
+
+	read_buffer = rbuffer;
+
+	spdk_blob_io_read(blob, channel, rbuffer, 0, 1, zv2404fs_spdk_blob_read_cb, NULL);
+}
+
+
+static void zv2404fs_spdk_blob_sync_cb(void *arg, int bserrno) {
+
+	uint8_t *wbuffer = spdk_malloc(512, 0x1000, NULL, SPDK_ENV_LCORE_ID_ANY, SPDK_MALLOC_DMA);
+	if (wbuffer == NULL) {
+		spdk_app_stop(0);
+		return ;
+	}
+	memset(wbuffer, 'A', BUFFER_SIZE);
+	*(wbuffer+BUFFER_SIZE-1) = '\0';
+	
+	write_buffer = wbuffer;
+
+	struct spdk_io_channel *chan = spdk_bs_alloc_io_channel(blobstore);
+	if (chan == NULL) {
+		spdk_app_stop(0);
+		return ;
+	}
+	channel = chan;
+	
+	spdk_blob_io_write(blob, channel, wbuffer, 0, 1, zv2404fs_spdk_blob_write_cb, NULL);
+
+}
+
+
+
+static void zv2404fs_spdk_blob_resize_cb(void *arg, int bserrno) {
+
+	struct spdk_blob *blb = (struct spdk_blob *)arg;
+
+	uint64_t total = spdk_blob_get_num_clusters(blb);
+	num_cluster = total;
+
+	SPDK_NOTICELOG("resize blob :%"PRIu64"\n", total);
+
+	spdk_blob_sync_md(blb, zv2404fs_spdk_blob_sync_cb, blb);
+
+}
+
+
+
+static void zv2404fs_spdk_bs_open_blob_cb(void *arg, struct spdk_blob *blb, int bserrno) {
+
+	struct spdk_blob_store *bs = (struct spdk_blob_store*)arg;
+
+	blob = blb;
+
+	uint64_t free_cluster = spdk_bs_free_cluster_count(bs);  //
+	SPDK_NOTICELOG("free_cluster : %"PRIu64"\n", free_cluster);
+	free_cluster_count = free_cluster;
+
+	spdk_blob_resize(blb, free_cluster, zv2404fs_spdk_blob_resize_cb, blb);
+
+}
+
+
+
+static void zv2404fs_spdk_bs_create_blob_cb(void *arg, spdk_blob_id blobid, int bserrno) {
+
+	struct spdk_blob_store *bs = (struct spdk_blob_store*)arg;
+
+	blob_id = blobid;
+	SPDK_NOTICELOG("blobid : %"PRIu64"\n", blobid);
+
+	spdk_bs_open_blob(bs, blobid, zv2404fs_spdk_bs_open_blob_cb, bs);
+}
+
+
+
+static void zv2404fs_spdk_bs_init_cb(void *arg, struct spdk_blob_store *bs,
+		int bserrno) {
+
+	uint64_t io_unit_size = spdk_bs_get_io_unit_size(bs);
+	SPDK_NOTICELOG("io_unit_size : %"PRIu64"\n", io_unit_size);
+
+	blobstore = bs;
+
+	spdk_bs_create_blob(bs, zv2404fs_spdk_bs_create_blob_cb, bs);
+}
+
+
+
+static void zv2404_spdk_bdev_event_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev,
 				     void *event_ctx) {
 
-	printf("zv2404_spdk_bdev_event_cb\n");
+	SPDK_NOTICELOG("zv2404_spdk_bdev_event_cb\n");
 
 }
 
@@ -28,12 +175,26 @@ static void zv2404fs_entry(void *ctx) {
 		spdk_app_stop(0);
 	}
 
+	//int *count = malloc(sizeof(int));
+	//*count = 2404;
 	
-	
-	printf("zv2404fs_entry\n");
+	spdk_bs_init(bs_dev, NULL, zv2404fs_spdk_bs_init_cb, NULL);
+
+	//sleep(10);
+	SPDK_NOTICELOG("zv2404fs_entry\n");
 
 }
 
+// open
+
+// read
+
+// write
+
+// close
+
+
+#if 1
 
 int main(int argc, char *argv[]) {
 
@@ -47,8 +208,29 @@ int main(int argc, char *argv[]) {
 	
 	spdk_app_start(&opts, zv2404fs_entry, NULL);
 
-	printf("hello spdk\n");
+	SPDK_NOTICELOG("hello spdk\n");
 
 }
 
 
+#else
+
+// posix
+int main() {
+
+	int fd = open("a.txt", O_CREAT | O_READ);
+
+	char *buffer = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+	
+	write(fd, buffer, strlen(buffer));
+
+	char rbuffer[128] = {0};
+	read(fd, buffer, 128);
+
+	close();
+}
+
+#endif
+
+
+
diff --git a/zvfs.json b/zvfs.json
new file mode 100644
index 0000000..10ded9d
--- /dev/null
+++ b/zvfs.json
@@ -0,0 +1,17 @@
+{
+  "subsystems": [
+    {
+      "subsystem": "bdev",
+      "config": [
+        {
+          "method": "bdev_malloc_create",
+          "params": {
+            "name": "Malloc0",
+            "num_blocks": 32768,
+            "block_size": 512
+          }
+        }
+      ]
+    }
+  ]
+}