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Goal: dynamically build rootfs from packages stored outside of initramfs
Status: success
as POC I'm running sl (steam locomotive) as init after changing root
for this experiment I needed to compile linux kernel with overlayfs, virtio and
9p drivers built in. Alternatively I could compile kernel with ext4 support and
load modules
- new dir "pkgs.sl" contains packages required for steam locomotive to run
- make now creates pkg_store that contains unpacked packages from pkgs.sl
- run_qemu.sh now also adds virtio 9p mount with pkg_store
- init script mounts pkg_store and builds rootfs from it (and initramfs as base
system)
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