Unable to use StorageManager to cache files on NFS storage

[mkurczew]

Describe the bug

I am unable to use StorageManager to download and cache data from mounted NFS storage.

My use case: I have a lot of data stored on quite slow NFS storage mounted under /mnt/xyz, I am using NFS to store datasets, because I manage them with our in-house tools and need them accessible on a per-file basis (I can't use Clearml Datasets because it stores files in chunks)

I would like to leverage local dataset caching by using StorageManager.download_folder however it doesn't seem to download anything, even though it returns path to local cache where the files should be downloaded.

When I use StorageManager.download_files() it just returns-back the NFS path, because it thinks the files are local and it skips download.

To reproduce

1. Remove/comment the line: { url: "file://*" } # file-urls are always directly referenced in my clearml.conf under sdk.storage.direct_access
2. Open python terminal and try to download the directory (it has 700MiB):

   from clearml import StorageManager
   StorageManager.download_folder("/mnt/xyz/dataset_y")

3. download_folder() will return my local cache path `~/.clearml/cache/storage_manager/global but no data is there, nothing was downloaded.

Expected behaviour

I expected the files to be copied from NFS share and locally cached.

Environment

• Server type - self hosted
• ClearML SDK Version - 1.14.4
• ClearML Server Version - 1.15.0-472
• Python Version - 3.11.8
• OS - Linux (ubuntu 22.04)

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[ainoam]

@mkurczew Thanks for pointing this out - We'll take a look.