On Mon, 15 Apr 2024 at 15:16, Yuriy Belikov <yuriybelikov1@xxxxxxxxx> wrote: > such files are visible in the terminal using the ls command. However, as there > were no modifications to the file content, a copy-up was not triggered. This leads > to my question about the type of filesystem object represented in the upper-layer > directory when only metadata is modified. It will be a empty file with no allocated data. If you read such a file it will contain all zeroes, but those zeroes are not actually stored on disk, so doing "du $METACOPY_FILE" should yield zero. It's easy to create such objects with the truncate(1) utility. Thanks, Miklos
