Date: Tue, 15 Oct 2002 09:42:19 +0200
From: Heinz.Mauelshagen@t-online.de (Heinz J . Mauelshagen)
To: Shawn <core@enodev.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [Evms-devel] Re: Linux v2.5.42
Message-ID: <20021015094219.A10151@sistina.com>
Reply-To: mauelshagen@sistina.com
References: <F87rkrlMjzmfv2NkkSD000144a9@hotmail.com> <3DA969F0.1060109@metaparadigm.com> <20021013144926.B16668@infradead.org> <3DA98E48.9000001@metaparadigm.com> <20021013163551.A18184@infradead.org> <20021014092048.A27417@q.mn.rr.com> <20021014172137.D19897@infradead.org> <20021014164730.B28737@q.mn.rr.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
In-Reply-To: <20021014164730.B28737@q.mn.rr.com>; from core@enodev.com on Mon, Oct 14, 2002 at 04:47:30PM -0500
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 4235
Lines: 103

On Mon, Oct 14, 2002 at 04:47:30PM -0500, Shawn wrote:
> On 10/14, Christoph Hellwig said something like:
> > On Mon, Oct 14, 2002 at 09:20:48AM -0500, Shawn wrote:
> > > Having said all that, given that your premises are true regarding the
> > > code design problems you have with EVMS, you have a valid point about
> > > including it in mainline. The question is, is this good enough to ignore
> > > having a logical device management system?!?
> > 
> > It is not good enough to ignore it.  It is good enough to postpone
> > integration for 2.7.
> 
> I just wish logical volume management in general had not been so
> abandoned in mainline in the first place. I'm not saying Linus unfairly
> excluded patches, and I'm not saying patches weren't available. I'm just
> saying the dynamics of Linus and the maintainers did not allow for a
> healthy LVM in mainline, resulting in decay.
> 
> If LVM1's destiny was to die during 2.5, then I wish there would have
> been a replacement ready during 2.5's lifecycle. Otherwise, keep
> creaking along with what's there, and fix it.

True, we aim to replace the LVM1 driver with device-mapper in 2.5, which we
strongly believe to be a first step to generic volume management in the kernel.

Feel free to blame us that we didn't have more capacity to
make it happen earlier ;-)

device-mapper is in the -ac kernel since last week. Thanks Alan.

Please have a look at the rather small amount of clean code.

> 
> The larger question of volume management should have been addressed
> before this whole mess happened. It really was, but LVM1 maintenance was
> somewhat abandoned in favor of device mapper, and now it's broken, and
> the holy wars are upon us again because many are in fear of losing
> functionality important to them (at least the ubiquitous nature of the
> functonality), and there is panic.

There's no need to be afraid because device-mapper and the LVM2 tools offer
a compatible path _now_ supporting all given LVM1 configurations.

The device-mapper code has already been merged by Alan (which is a very good
approval IMNSHO) and is rather easy to overlook.

Please help us and have a look...

> 
> > Now that Al has sorted out lots of the block device mess in 2.5
> > I will work together with whoever is interested in it (i.e. the EVMS
> > folks) to integrate proper higher-level volume-management into
> > the kernel once the next unstable series opens.
> 
> I look forward to it. In spite of my personal goals on this, I do
> appreciate your pickiness.
> 
> > Coing up with lots of code just before feature freeze is just not the way
> > infrastructure work is done Linux.
> 
> I just wish there were less veto-esque ways to handle EVMS in *-stable.
> 
> --
> Shawn Leas
> core@enodev.com
> 
> I put my air conditioner in backwards.  It got cold outside.
> The weatherman on TV was confused.  "It was supposed to be hot
> today."
> 						-- Stephen Wright
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf
> _______________________________________________
> Evms-devel mailing list
> Evms-devel@lists.sourceforge.net
> To subscribe/unsubscribe, please visit:
> https://lists.sourceforge.net/lists/listinfo/evms-devel

-- 

Regards,
Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen@Sistina.com                           +49 2626 141200
                                                       FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/