Re: Linux v2.5.42

Andres Salomon
2002-10-12T19:33:51Z

2.5 LVM2 patches in non-BK form:
http://people.sistina.com/~thornber/dm_2002-10-09.tar.bz2

Joe, it would be nice if you linked to that from p.s.c/~thornber/; or,
if you're going to be releasing a bunch of patches, make a dm directory
w/ directoryindexing enabled.

On Sat, Oct 12, 2002 at 02:32:33PM +0100, Christoph Hellwig wrote:
>
> On Fri, Oct 11, 2002 at 09:59:58PM -0700, Linus Torvalds wrote:
> > PS: NOTE - I'm not going to merge either EVMS or LVM2 right now as things
> > stand. I'm not using any kind of volume management personally, so I just
> > don't have the background or inclination to walk through the patches and
> > make that kind of decision. My non-scientific opinion is that it looks
> > like the EVMS code is going to be merged, but ..
> >
> > Alan, Jens, Christoph, others - this is going to be an area where I need
> > input from people I know, and preferably also help merging. I've been
> > happy to see the EVMS patches being discussed on linux-kernel, and I just
> > wanted to let people know that this needs outside help.
>
> I don't think the work to get EVMS in shape can be done in time (feel
> free to preove me wrong..). The problem in my eyes is that large
> parts of what evms does should be in the higher layers, i.e. the
> block layer, but they implement their own new layer as the consumer of
> those. i.e. instead of using the generic block layer structures to
> present a volume/device they use their own, private structures that
> need hacks to get the access right (pass-through ioctls) and need
> constant resyncing with the native structures in the case where we
> have both (the lowest layer). IMHO we should try to get a common
> userspace API in first, then implement the missing functionality for
> properly interaction of voulme managers at the block layer. After
> that EVMS would just be a set of coulme mangment drivers + a library
> of common functionality.
>
> Doing that higher level work will take some time to get right, and the
> current EVMS API seems unsuitable for me, it contains lots of very#
> strange APIs that need rework. Merging EVMS now for 2.6 means that
> we'll have to keep those strange APIs around, and have to maintain
> backwards-compatiblity.
>
> I've not seen LVM2 code for 2.5 yet, but the 2.4 code looks very
> promising, although it might need some work in different areas.
> I'll take a look as soon as Sistina publishes patches for 2.5 instead
> of just a BK repository. LVM1 is totally unusable in 2.5, I think
> we should better remove the dead code now than later.
>
> Christoph
>
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