Readonly RootFS support in Emdebian
I guess all of you know, that a readonly rootfs is a quite common
requirement for embedded (unix) systems.
I successfully followed the steps given in the Debian wiki  to come
over some restrictions to make debian work on a read only rootfs.
I googled around and found some conversions regarding this issue .
Unfortuantly most of documents linked there are gone. Many Debian
packages store their configuration files in /etc even if the package
origin preferred /var. I experimented around  with multistrap and
came to a similar approach like in  - I reconfigured (a small number
of pkgs) to place their volatile content under /var - which is dedicated
for this task. I set up an overlay filesystem with aufs2:
/var-ro-base and /var-rw-overlay (the rw overlay is served via tmpfs in
Does the idea exists, that the majority of the packages (at least those
in Emdebian) provide a better support for RO rootfs - maybe with an
overlay fs like aufs2?
Or is this just a nice-to-have feature which must be solved apart from
[ ] Better RO support would be great. Let's start.
[ ] RO support is not compliant with Debian architecture.
[ ] RO support would be nice, but no one has time to put energy in it.
[ ] Go away. We solve things on our own.