On Wed, Jan 15, 2020 at 10:18 AM Alessandro Baggi < alessandro.baggi at gmail.com> wrote: > I made several test to see what happens and noticed that removing -S > (--sparse) from rsync command problem does not occour. > In another test, thinking about a problem on 0ed file, I tried file > generation using /dev/urandom then /dev/zero and running rsync -avS the > problem is disappeared. > https://wiki.archlinux.org/index.php/Sparse_file#Creating_sparse_files In short, rsync is being told to create sparse files with the -S flag, so it does. Could you share what you did with the urandom then zero test you mentioned? I'm curious what exact sequence of commands you used.