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Bug#994388: dpkg currently warning about merged-usr systems



On Thu, 2022-03-24 at 15:06 +0100, Ansgar wrote:
> On Thu, 2022-03-24 at 14:49 +0100, Helmut Grohne wrote:
> > On Thu, Mar 24, 2022 at 09:12:14AM +0100, Ansgar wrote:
> > > Maybe it should be changed into a warning that non-merged-/usr
> > > systems
> > > will not be supported in the future.  The `dpkg-fsys-usrunmess`
> > > program
> > > should probably also include a warning that it will convert the
> > > system
> > > into a state no longer supported by Debian in the future.
> > 
> > What is supported is a bit subjective I fear.
> 
> No, Helmut, it is not. We had that discussion often enough and in this
> bug report you will find the following:
> 
> +---
> > There are currently Debian 11 installations with both the merged-/usr
> > and non-merged-/usr filesystem layouts. All of these installations
> > should successfully upgrade via normal upgrade paths to a merged-/usr
> > Debian 12.  Only after the release of Debian 12 can packages assume
> > that all installations will be merged-/usr.
> +---
> 
> I'm not motivated to pretend the last years did not happen.
> 
> Feel free to start a GR to override the tech ctte if you think that is
> necessary.
> 
> > > Either way, given related questions were already before the tech
> > > ctte
> > > several times it would be nice if this could be decided quickly to
> > > avoid this becoming yet another energy drain (we had several
> > > sufficiently long enough threads about this topic already).
> > 
> > As much as I'd like to see this resolved quickly, I fear it is
> > blocked on the lack of patches supporting merged-/usr.
> 
> Given all new installations have been merged-/usr for years, it seems
> to work sufficiently well for real-world use.

And on top of new installations, old installations of Ubuntu upgrading
to 21.10 and/or the soon-to-be-released 22.04 have been forcifully
migrated too. They are not blocked, unsupported, or broken.

-- 
Kind regards,
Luca Boccassi

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