On Thu, Sep 03, 2020 at 11:53:03AM +0200, Miklos Szeredi wrote: > On Thu, Sep 3, 2020 at 11:24 AM Mauro Condarelli <mc5686@xxxxxxxxx> wrote: > > > FYI: using OverlayFS this way and for this use-case was suggested > > by SWUpdate maintainer (Stefano Babic) so I guess there are other > > people relying on "correct" behavior around the world . > > So my opinion is that this use case (modifying or even completely > swapping out the lower layer while it is not mounted) should work > perfectly fine with a "plain" configuration. > > Doing this with redirect_dir, metacopy or index does sound somewhat > scary and some of that obviously won't even work because of the broken > origins. Hi Miklos, Shall we document that changing/swapping lower layers with existing upper is not supported configuration with advanced features like metacopy/redirect_dir/index. This topic has come up now multiple times recently. It will be good to make it very clear in documentation. Thanks Vivek