> If you are wondering why a metadata update would make OverlayFS duplicate the entire file, it is for security reasons. You can enable “metadata only copy up”[

> If you are wondering why a metadata update would make OverlayFS duplicate the entire file, it is for security reasons. You can enable “metadata only copy up”[0] feature which will only copy the metadata instead of the whole file. [0]: https://www.kernel.org/doc/html/latest/filesystems/overlayfs.html#metadata-only-copy-up https://www.kernel.org/doc/html/latest/filesystems/overlayfs...