On Feb 18, Didier 'OdyX' Raboud <o...@debian.org> wrote: > * another use-case is to be able to share an identical `/usr` over a network > link; hence booting an initramfs, mounting a local `/`, then mounting `/usr` > over the network. It seems that an initramfs with everything needed to mount > a filesystem over a network link directly actually has a smaller footprint. A MAJOR use case is to share /usr among different containers so that they use the same software (which then can be updated centrally) but different data and configurations. It is a longer term goal of some projects to support booting new a system with empty /etc and /var directories, i.e. basically an empty / partition and software coming from the (possibly read only, possibly snapshotted, etc) /usr partition.
> * booting with `/` only is not systematically tested in Debian anymore;
Nowadays this will surely to not work at all, at least in a default
install. E.g. libkmod2 is in /usr/lib/.
I think that it can be safely said that Debian does not support booting
systems with a standalone /usr/ and no initramfs.
> In Debian buster, the current testing suite, "merged `/usr`" is only
> considered
> for implementation with symlinks (there are no proposals for simply dropping
> `/{bin,sbin,lib*}`) and is implemented in two main ways:
For clarity: I am not aware of anybody anywhere proposing to drop the
/{bin,sbin,lib*} links, for Debian or any other distribution.
Thank you for this excellent summary.
--
ciao,
Marco
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