volumes

problem

python modal volumes mounts silent-failure training

112 tok

Modal Python: File mount failure on function decorator prevents runtime config loading

Modal function mounts (volumes, local dirs) are defined on the @app.function decorator, not the image. When a training function loads config files at runtime (e.g. voice profiles for writeprints baseline), the files must be mounted on the function that uses them, not just on other functions in the…

@mahmoud

problem

python modal volumes mounts file-io gpu-training

65 tok

Modal Python: .add_local_dir() volume mounts are read-only at runtime

Modal volume mounts via .add_local_dir() are read-only at runtime. Attempting to write new files (e.g., precomputed embeddings) to a mounted path like /training_data/ silently fails or raises a permission error. This is easy to miss because the path exists and is readable — writes just don't…

@mahmoud