diff --git a/tools/acrn-crashlog/acrnprobe/sender.c b/tools/acrn-crashlog/acrnprobe/sender.c
index dd60756cf..53b983dcc 100644
--- a/tools/acrn-crashlog/acrnprobe/sender.c
+++ b/tools/acrn-crashlog/acrnprobe/sender.c
@@ -57,7 +57,8 @@ static int crashlog_check_space(void)
 	if (!space_available(crashlog->outdir, quota))
 		return -1;
 
-	if (dir_size(crashlog->outdir, crashlog->outdir_len, &dsize) == -1) {
+	if (dir_blocks_size(crashlog->outdir, crashlog->outdir_len,
+			    &dsize) == -1) {
 		LOGE("failed to check outdir size\n");
 		return -1;
 	}
diff --git a/tools/acrn-crashlog/common/fsutils.c b/tools/acrn-crashlog/common/fsutils.c
index 1e4998d2e..70fc203e0 100644
--- a/tools/acrn-crashlog/common/fsutils.c
+++ b/tools/acrn-crashlog/common/fsutils.c
@@ -1085,11 +1085,12 @@ int find_file(const char *dir, size_t dlen, const char *target_file,
 	return -1;
 }
 
-static int _count_file_size(const char *pdir, struct dirent *dirp, void *arg)
+static int _count_file_blocks_size(const char *pdir, struct dirent *dirp,
+					void *arg)
 {
 	char file[PATH_MAX];
 	int res;
-	ssize_t fsize;
+	ssize_t fbsize;
 
 	if (dirp->d_type != DT_REG && dirp->d_type != DT_DIR)
 		return DIR_SUCCESS;
@@ -1098,22 +1099,22 @@ static int _count_file_size(const char *pdir, struct dirent *dirp, void *arg)
 	if (s_not_expect(res, sizeof(file)))
 		return DIR_ERROR;
 
-	fsize = get_file_size(file);
-	if (fsize < 0)
+	fbsize = get_file_blocks_size(file);
+	if (fbsize < 0)
 		return DIR_ERROR;
 
-	*(size_t *)arg += fsize;
+	*(size_t *)arg += fbsize;
 
 	return DIR_SUCCESS;
 }
 
-int dir_size(const char *dir, size_t dlen, size_t *size)
+int dir_blocks_size(const char *dir, size_t dlen, size_t *size)
 {
 	if (!dir || !dlen || !size)
 		return -1;
 
 	*size = 0;
-	if (dir_recursive(dir, dlen, -1, _count_file_size,
+	if (dir_recursive(dir, dlen, -1, _count_file_blocks_size,
 			  (void *)size) != DIR_SUCCESS) {
 		LOGE("failed to recursive dir (%s)\n", dir);
 		return -1;
diff --git a/tools/acrn-crashlog/common/include/fsutils.h b/tools/acrn-crashlog/common/include/fsutils.h
index b5ae6a387..a54c634ab 100644
--- a/tools/acrn-crashlog/common/include/fsutils.h
+++ b/tools/acrn-crashlog/common/include/fsutils.h
@@ -75,6 +75,19 @@ static inline ssize_t get_file_size(const char *filepath)
 	return info.st_size;
 }
 
+static inline ssize_t get_file_blocks_size(const char *filepath)
+{
+	struct stat info;
+
+	if (filepath == NULL)
+		return -ENOENT;
+
+	if (stat(filepath, &info) < 0)
+		return -errno;
+
+	return info.st_blocks * 512;
+}
+
 char *mm_get_line(struct mm_file_t *mfile, int line);
 int mkdir_p(const char *path);
 int remove_r(const char *dir);
@@ -114,7 +127,7 @@ int dir_contains(const char *dir, const char *filename, size_t flen, int exact);
 int lsdir(const char *dir, char *fullname[], int limit);
 int find_file(const char *dir, size_t dlen, const char *target_file,
 		size_t tflen, int depth, char *path[], int limit);
-int dir_size(const char *dir, size_t dlen, size_t *size);
+int dir_blocks_size(const char *dir, size_t dlen, size_t *size);
 int read_file(const char *path, unsigned long *size, void **data);
 int is_ac_filefmt(const char *file_fmt);
 int config_fmt_to_files(const char *file_fmt, char ***out);