Re: Device-mapper submission for 2.4

[venom]

DM is back compatible with LVM1, tested and runs well.

Of course LVM1 has problems, but should we consider the DM case as mutch the
same as XFS?

Luigi

On Wed, 10 Dec 2003, Paul Jakma wrote:

> Date: Wed, 10 Dec 2003 15:55:53 +0000 (GMT)
> From: Paul Jakma <paul@xxxxxxxx>
> To: Martin J. Bligh <mbligh@xxxxxxxxxxx>
> Cc: Marcelo Tosatti <marcelo.tosatti@xxxxxxxxxxxx>,
>      Joe Thornber <thornber@xxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: Device-mapper submission for 2.4
>
> On Tue, 9 Dec 2003, Martin J. Bligh wrote:
>
> > Some form of backward compatibility from 2.6 would seem a much more
> > sensible thing to fight for. Foisting forward comaptibility on an
> > older release seems like a bad road to go down.
>
> I dont really care, but some kind of (long-term, ie lifetime of
> either 2.4 or 2.6) compatibility is needed.
>
> LVM1 kernel support was recently removed from 2.6.0, so it would have
> to be added back in.
>
> One argument for adding forward compatibility in 2.4 is that it will
> /force/ people to move to DM before going to 2.6, which might be a
> good thing as, AIUI, LVM1 has problems.
>
> Its a choice between:
>
> - 2.6 backwards compatibility, adding back in LVM1 support, LVM1
> users will then quite possibly continue to use the problematical LVM1
> interfaces even after migrating to 2.6.
>
> - 2.4 forwards compatibility, add DM support - which appears (IMVU)
> to drop in cleanly alongside MD - and hence 2.6 can remain 'clean'.
>
> I dont know, but it would be nice to have /something/ and to have it
> in stock kernel rather than /hope/ to have upstreams include the
> required backward or forward compatibility.
>
> > M.
>
> regards,
> --
> Paul Jakma	paul@xxxxxxxx	paul@xxxxxxxxx	Key ID: 64A2FF6A
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> Fortune:
> But it does move!
> 		-- Galileo Galilei
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