[arch-general] Reboot - Versioned Kernel Installs

Tom Gundersen teg at jklm.no
Mon Jun 6 13:23:50 EDT 2011

On Mon, Jun 6, 2011 at 6:22 PM, Tavian Barnes <tavianator at tavianator.com> wrote:
> I have kernel26-lts installed as a backup kernel, and this is all
> that's really necessary for rolling back broken kernel updates.  I've
> been bitten by a BTRFS bug once and rolled back with -lts no problem.
> -1 from me on keeping multiple kernel versions installed; I really
> like that arch doesn't keep 6 old kernels around.

I agree.

The reason I am against keeping old kernels around is that we would
not be able to test user space against all the possible combinations,
so it would not be a good idea to suggest that we do (we do try to
support all sorts of self-compiled kernels, but at least if you
compile your own kernel it is pretty obvious that it will not be as
well tested as the "official" ones).

One possibility would be to do like upstream does and always rename
the previous kernel to .old. That should keep the last known working
kernel around while making it clear that it should not be relied on
for day-to-day use (and that it will get overwritten on the next
kernel upgrade so these things won't get old).

That said, I'm not involved with packaging the kernel, so if you want
anything to change with how it is packaged (maybe after this
discussion is over), it would be best to file a feature request on FS.



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