diff --git a/lib/blobfs/blobfs.c b/lib/blobfs/blobfs.c
index fad9b3cc3..e58f202fe 100644
--- a/lib/blobfs/blobfs.c
+++ b/lib/blobfs/blobfs.c
@@ -34,6 +34,7 @@
 #include "spdk/stdinc.h"
 
 #include "spdk/blobfs.h"
+#include "spdk/conf.h"
 #include "blobfs_internal.h"
 
 #include "spdk/queue.h"
@@ -401,6 +402,23 @@ init_cb(void *ctx, struct spdk_blob_store *bs, int bserrno)
 	free_fs_request(req);
 }
 
+static void
+fs_conf_parse(void)
+{
+	struct spdk_conf_section *sp;
+
+	sp = spdk_conf_find_section(NULL, "Blobfs");
+	if (sp == NULL) {
+		g_fs_cache_buffer_shift = CACHE_BUFFER_SHIFT_DEFAULT;
+		return;
+	}
+
+	g_fs_cache_buffer_shift = spdk_conf_section_get_intval(sp, "CacheBufferShift");
+	if (g_fs_cache_buffer_shift <= 0) {
+		g_fs_cache_buffer_shift = CACHE_BUFFER_SHIFT_DEFAULT;
+	}
+}
+
 static struct spdk_filesystem *
 fs_alloc(struct spdk_bs_dev *dev, fs_send_request_fn send_request_fn)
 {
@@ -449,6 +467,8 @@ spdk_fs_init(struct spdk_bs_dev *dev, fs_send_request_fn send_request_fn,
 		return;
 	}
 
+	fs_conf_parse();
+
 	req = alloc_fs_request(fs->md_target.md_fs_channel);
 	if (req == NULL) {
 		spdk_put_io_channel(fs->md_target.md_io_channel);
@@ -657,6 +677,8 @@ spdk_fs_load(struct spdk_bs_dev *dev, fs_send_request_fn send_request_fn,
 		return;
 	}
 
+	fs_conf_parse();
+
 	req = alloc_fs_request(fs->md_target.md_fs_channel);
 	if (req == NULL) {
 		spdk_put_io_channel(fs->md_target.md_io_channel);
diff --git a/lib/blobfs/tree.c b/lib/blobfs/tree.c
index cd841284f..ffb6bce60 100644
--- a/lib/blobfs/tree.c
+++ b/lib/blobfs/tree.c
@@ -41,6 +41,8 @@
 #include "spdk/env.h"
 #include "spdk_internal/log.h"
 
+uint32_t g_fs_cache_buffer_shift = CACHE_BUFFER_SHIFT_DEFAULT;
+
 struct cache_buffer *
 spdk_tree_find_buffer(struct cache_tree *tree, uint64_t offset)
 {
diff --git a/lib/blobfs/tree.h b/lib/blobfs/tree.h
index 0a9ba62a3..9bde83c65 100644
--- a/lib/blobfs/tree.h
+++ b/lib/blobfs/tree.h
@@ -43,14 +43,16 @@ struct cache_buffer {
 	bool			in_progress;
 };
 
-#define CACHE_BUFFER_SHIFT (18)
-#define CACHE_BUFFER_SIZE (1U << CACHE_BUFFER_SHIFT)
+extern uint32_t g_fs_cache_buffer_shift;
+
+#define CACHE_BUFFER_SHIFT_DEFAULT 18
+#define CACHE_BUFFER_SIZE (1U << g_fs_cache_buffer_shift)
 #define NEXT_CACHE_BUFFER_OFFSET(offset)	\
-	(((offset + CACHE_BUFFER_SIZE) >> CACHE_BUFFER_SHIFT) << CACHE_BUFFER_SHIFT)
+	(((offset + CACHE_BUFFER_SIZE) >> g_fs_cache_buffer_shift) << g_fs_cache_buffer_shift)
 
 #define CACHE_TREE_SHIFT 6
 #define CACHE_TREE_WIDTH (1U << CACHE_TREE_SHIFT)
-#define CACHE_TREE_LEVEL_SHIFT(level)	(CACHE_BUFFER_SHIFT + (level) * CACHE_TREE_SHIFT)
+#define CACHE_TREE_LEVEL_SHIFT(level)	(g_fs_cache_buffer_shift + (level) * CACHE_TREE_SHIFT)
 #define CACHE_TREE_LEVEL_SIZE(level)	(1ULL << CACHE_TREE_LEVEL_SHIFT(level))
 #define CACHE_TREE_LEVEL_MASK(level)	(CACHE_TREE_LEVEL_SIZE(level) - 1)
 #define CACHE_TREE_INDEX(level, offset)	((offset >> CACHE_TREE_LEVEL_SHIFT(level)) & (CACHE_TREE_WIDTH - 1))
diff --git a/test/lib/blobfs/blobfs_async_ut/blobfs_async_ut.c b/test/lib/blobfs/blobfs_async_ut/blobfs_async_ut.c
index 37da16985..f81d91beb 100644
--- a/test/lib/blobfs/blobfs_async_ut/blobfs_async_ut.c
+++ b/test/lib/blobfs/blobfs_async_ut/blobfs_async_ut.c
@@ -47,6 +47,20 @@ struct spdk_filesystem *g_fs;
 struct spdk_file *g_file;
 int g_fserrno;
 
+/* Return NULL to test hardcoded defaults. */
+struct spdk_conf_section *
+spdk_conf_find_section(struct spdk_conf *cp, const char *name)
+{
+	return NULL;
+}
+
+/* Return -1 to test hardcoded defaults. */
+int
+spdk_conf_section_get_intval(struct spdk_conf_section *sp, const char *key)
+{
+	return -1;
+}
+
 static void
 _fs_send_msg(spdk_thread_fn fn, void *ctx, void *thread_ctx)
 {
diff --git a/test/lib/blobfs/blobfs_sync_ut/blobfs_sync_ut.c b/test/lib/blobfs/blobfs_sync_ut/blobfs_sync_ut.c
index b7c707b74..08ec2b447 100644
--- a/test/lib/blobfs/blobfs_sync_ut/blobfs_sync_ut.c
+++ b/test/lib/blobfs/blobfs_sync_ut/blobfs_sync_ut.c
@@ -49,6 +49,20 @@ struct spdk_filesystem *g_fs;
 struct spdk_file *g_file;
 int g_fserrno;
 
+/* Return NULL to test hardcoded defaults. */
+struct spdk_conf_section *
+spdk_conf_find_section(struct spdk_conf *cp, const char *name)
+{
+	return NULL;
+}
+
+/* Return -1 to test hardcoded defaults. */
+int
+spdk_conf_section_get_intval(struct spdk_conf_section *sp, const char *key)
+{
+	return -1;
+}
+
 static void
 _fs_send_msg(spdk_thread_fn fn, void *ctx, void *thread_ctx)
 {