On Fri, 8 Dec 2023 at 19:00, Eric Curtin <ecurtin@xxxxxxxxxx> wrote: > > We have been working on a new initial filesystem called initoverlayfs. > It is a new filesystem that provides a more scalable approach to > initial filesystems as opposed to just using initrds. We are writing > this RFC to the systemd and dracut mailing lists (feel free to forward > to UAPI group also) because although this solution works without > changing the code in these projects, it operates in the same area as > systemd, udev, dracut, etc. and uses these tools. It seems to me everything you described already exists? If you want to avoid having an initrd -> rootfs transition, you can already do that - the initrd code paths run because there's /etc/initrd-release, omit that and the transition/phase is avoided. If you want to have an overlay with r/o images, you can already do that with sysexts. You'll need to reimplement and maintain separately TPM support, LUKS support, fido2, etc etc
