@zmsoft 

Unity Catalog (UC) enforces strict access control policies, and traditional mounting techniques—such as using access keys or the dbutils.fs.mount command—are not recommended. Best practices for DBFS and Unity Catalog.

Databricks advises against using DBFS mounts for external data sources when working with Unity Catalog. Instead, it's recommended to use Unity Catalog's external locations/Volumnes and storage credentials to manage data access, providing a more secure and governed approach.

Would recomand follow the apparch which @filipniziol mentioned.