--- a/libmultipath/util.c
+++ b/libmultipath/util.c
@@ -368,6 +368,13 @@ int safe_write(int fd, const void *buf, size_t count)
 		count -= r;
 		buf = (const char *)buf + r;
 	}
+
+	/* sync->disk */
+	if (fsync(fd) < 0) {
+		condlog(0, "failed to fsync fd :%d", fd);
+		return -errno;
+	}
+
 	return 0;
 }
 
-- 
1.8.3.1