diff --git a/qtfs/include/req.h b/qtfs/include/req.h
index 407faeffeaf9d56052aaca7a54a3a1e5e774a48d..0fc7462509d3c0486a96e0793c1e7097ce394908 100644
--- a/qtfs/include/req.h
+++ b/qtfs/include/req.h
@@ -165,6 +165,7 @@ struct qtreq_mount {
 };
 struct qtrsp_mount {
 	int ret;
+	int errno;
 };
 
 struct qtreq_open {
diff --git a/qtfs/qtfs/sb.c b/qtfs/qtfs/sb.c
index 3bf1226e88045c648bec5a26ebbca47c1405e2cf..3e94a885c8b0e298025781a26de0fcd6544bfbc6 100644
--- a/qtfs/qtfs/sb.c
+++ b/qtfs/qtfs/sb.c
@@ -1636,6 +1636,7 @@ struct dentry *qtfs_fs_mount(struct file_system_type *fs_type,
 	struct qtrsp_mount *rsp = NULL;
 	struct dentry *ret;
 	struct qtfs_fs_info *priv = NULL;
+	int errno;
 	struct qtfs_conn_var_s *pvar = qtfs_conn_get_param();
 	if (!pvar) {
 		qtfs_err("Failed to get qtfs sock var\n");
@@ -1646,9 +1647,10 @@ struct dentry *qtfs_fs_mount(struct file_system_type *fs_type,
 	strlcpy(req->path, dev_name, PATH_MAX);
 	rsp = qtfs_remote_run(pvar, QTFS_REQ_MOUNT, strlen(dev_name));
 	if (IS_ERR_OR_NULL(rsp) || rsp->ret != QTFS_OK) {
-		qtfs_err("qtfs fs mount failed, path:<%s> not exist at peer.\n", dev_name);
+		errno = rsp->errno;
+		qtfs_err("qtfs fs mount failed, path:<%s> errno:%d.\n", dev_name, errno);
 		qtfs_conn_put_param(pvar);
-		return ERR_PTR(-ENOENT);
+		return (IS_ERR_VALUE((long)errno)) ? ERR_PTR(errno) : ERR_PTR(-EFAULT);
 	}
 
 	priv = (struct qtfs_fs_info *)kmalloc(sizeof(struct qtfs_fs_info), GFP_KERNEL);
diff --git a/qtfs/qtfs_server/fsops.c b/qtfs/qtfs_server/fsops.c
index 101ce05de2f011a609fe4d35c3d139c336cd1b38..fdadd390fb7202e944b84b76501252c640f7de68 100644
--- a/qtfs/qtfs_server/fsops.c
+++ b/qtfs/qtfs_server/fsops.c
@@ -249,19 +249,21 @@ static int handle_mount(struct qtserver_arg *arg)
 	struct qtrsp_mount *rsp = (struct qtrsp_mount *)RSP(arg);
 	if (!in_white_list(req->path, QTFS_WHITELIST_MOUNT)) {
 		rsp->ret = QTFS_ERR;
-		return sizeof(rsp->ret);
+		rsp->errno = -EPERM;
+		return sizeof(rsp);
 	}
 
 	ret = kern_path(req->path, LOOKUP_DIRECTORY, &path);
 	if (ret) {
 		qtfs_err("handle mount path:%s kern_path failed, ret: %d.\n", req->path, ret);
 		rsp->ret = QTFS_ERR;
+		rsp->errno = -EINVAL;
 	} else {
 		rsp->ret = QTFS_OK;
 		qtfs_info("handle mount path:%s success.\n", req->path);
 		path_put(&path);
 	}
-	return sizeof(rsp->ret);
+	return sizeof(rsp);
 }
 
 int handle_open(struct qtserver_arg *arg)