Fedora 18 existing /usr partition -- need to merge into rootfs?

[Harald Hoyer]

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Am 02.04.2013 11:23, schrieb Reindl Harald:
> 
> 
> Am 02.04.2013 11:14, schrieb Harald Hoyer:
>>> it makes ZERO sense to split /usr to a own partition you owuld really
>>> clone a partition containing the whole system or share it with another
>>> setup without the depending RPM database which lives in /var/lib/rpm/?
>>> 
>>> sorry but the idea of a seperate /usr is broken at all
>> 
>> This is FUD. The idea is perfectly fine and we should bring our OS in
>> shape for doing it so
> 
> so explain what is FUD in the simple fact that snapshot/clone a sperated
> /usr where 99% of the files are from RPM packages while the RPM database is
> NOT under /usr makes no sense?
> 
> what do YOU imagine when as example (what was one of the arguments for
> UsrMove) a snapshot of /usr is done before a upgrade which changes the RPM
> database in /var/lib/rpm and you rollback to the snapshot while the RPM
> database still has all updates?
> 
> i can not imagine a better way to fuck up a OS-installation
> 

We are not there yet. The target should be to have rpms only install to /usr
and then this rpm DB can live in /usr also. Of course rpm does not support
multiple databases... yet.

The use-case for a separate /usr is the "shared across multiple machines"
use-case. For this use-case /usr is read-only anyway and rpm updates can only
be made on the master machine. rpm on the client machines is useless and other
mechanisms to keep /etc synchronized have to be used anyway.

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