alt Hacker NewsDevices rather than filesystems, but .. https://libguestfs.org/nbdkit-error-filter.1.html & https://libguestfs.org/nbdkit-evil-filter.1.html
Devices rather than filesystems, but .. https://libguestfs.org/nbdkit-error-filter.1.html & https://libguestfs.org/nbdkit-evil-filter.1.html
Such a filesystem could be done with FUSE. Devices can be done by Linux itself: https://docs.kernel.org/admin-guide/device-mapper/dm-flakey....