Reflinks vs. symlinks vs. hard links and managing data in ML

I use Linux for more than 15 years and it is the first time I learned that such a thing as a reflink exists.

I use DVC for about a year on relatively large datasets (my expertise in Computer Vision and images are pretty heavy). I was always curious to know what is happening under the hood of the DVC, when it deals with the data in such a way that it is fast and cache is not corrupted.

It's mentioning DVC inside it, I would be happy to discuss and answer any questions as one of the maintainers.