yep, that’s correct behavior for old kernel versions. Probably on the production environment with an old kernel versions you are not using idmapped mounts. But the questions is, how all of this works for you now? You’ve started a topic from the question that something get broken on a newer kernel versions, but AFAIU you already have a working setup on older versions. And what I whan is to understand your setup on this “old” versions, your idmappings setup, how mknod interception works for you and so on. Couldn’t you describe all of this in details? If I have a minimal possible reproducer which works on your old kernel and doesn’t work on a new versions then I’ll be able to fix it, otherwise it may took too much time and forces…