>> As already mentioned that the issue that we were facing was that "too >> many copyups were made on the read-write file system". > But my question is: In which cases specifically do you want to avoid > copyups as compared to e.g. Overlayfs? > To be honest I do not the answer. I had senior kernel developers from Cern who guided me when working on this driver. I need to consult them in order to answer you correctly. I would try to be bring them in this thread to get you the right answer. Regards, Saket Sinha -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html