From: Heinz Mauelshagen <mauelshagen@redhat.com>
To: Lars Marowsky-Bree <lmb@suse.de>
Cc: Heinz Mauelshagen <mauelshagen@redhat.com>,
Neil Brown <neilb@suse.de>, Phillip Susi <psusi@cfl.rr.com>,
Jan Engelhardt <jengelh@linux01.gwdg.de>,
"Lincoln Dale (ltd)" <ltd@cisco.com>,
Michael Tokarev <mjt@tls.msk.ru>,
linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org,
"Steinar H. Gunderson" <sgunderson@bigfoot.com>
Subject: Re: [PATCH 000 of 5] md: Introduction
Date: Sat, 21 Jan 2006 01:01:42 +0100 [thread overview]
Message-ID: <20060121000142.GR2801@redhat.com> (raw)
In-Reply-To: <20060120225724.GW22163@marowsky-bree.de>
On Fri, Jan 20, 2006 at 11:57:24PM +0100, Lars Marowsky-Bree wrote:
> On 2006-01-20T19:36:21, Heinz Mauelshagen <mauelshagen@redhat.com> wrote:
>
> > > Then 'dmraid' (or a similar tool) can use 'dm' interfaces for some
> > > raid levels and 'md' interfaces for others.
> > Yes, that's possible but there's recommendations to have a native target
> > for dm to do RAID5, so I started to implement it.
>
> Can you answer me what the recommendations are based on?
Partner requests.
>
> I understand wanting to manage both via the same framework, but
> duplicating the code is just ... wrong.
>
> What's gained by it?
>
> Why not provide a dm-md wrapper which could then
> load/interface to all md personalities?
>
As we want to enrich the mapping flexibility (ie, multi-segment fine grained
mappings) of dm by adding targets as we go, a certain degree and transitional
existence of duplicate code is the price to gain that flexibility.
>
> Sincerely,
> Lars Marowsky-Brée
>
> --
> High Availability & Clustering
> SUSE Labs, Research and Development
> SUSE LINUX Products GmbH - A Novell Business -- Charles Darwin
> "Ignorance more frequently begets confidence than does knowledge"
Warm regards,
Heinz -- The LVM Guy --
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Heinz Mauelshagen Red Hat GmbH
Consulting Development Engineer Am Sonnenhang 11
Cluster and Storage Development 56242 Marienrachdorf
Germany
Mauelshagen@RedHat.com +49 2626 141200
FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
next prev parent reply other threads:[~2006-01-21 0:02 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-17 21:38 [PATCH 000 of 5] md: Introduction Lincoln Dale (ltd)
2006-01-18 13:27 ` Jan Engelhardt
2006-01-18 23:19 ` Neil Brown
2006-01-19 15:33 ` Mark Hahn
2006-01-19 20:12 ` Jan Engelhardt
2006-01-19 21:22 ` Lars Marowsky-Bree
2006-01-19 22:17 ` Phillip Susi
2006-01-19 22:32 ` Neil Brown
2006-01-19 23:26 ` Phillip Susi
2006-01-19 23:43 ` Neil Brown
2006-01-20 2:17 ` Phillip Susi
2006-01-20 10:53 ` Lars Marowsky-Bree
2006-01-20 12:06 ` Jens Axboe
2006-01-20 18:38 ` Heinz Mauelshagen
2006-01-20 22:09 ` Lars Marowsky-Bree
2006-01-21 0:06 ` Heinz Mauelshagen
2006-01-20 18:41 ` Heinz Mauelshagen
2006-01-20 17:29 ` Ross Vandegrift
2006-01-20 18:36 ` Heinz Mauelshagen
2006-01-20 22:57 ` Lars Marowsky-Bree
2006-01-21 0:01 ` Heinz Mauelshagen [this message]
2006-01-21 0:03 ` Lars Marowsky-Bree
2006-01-21 0:08 ` Heinz Mauelshagen
2006-01-21 0:13 ` Lars Marowsky-Bree
2006-01-23 9:44 ` Heinz Mauelshagen
2006-01-23 10:26 ` Lars Marowsky-Bree
2006-01-23 10:38 ` Heinz Mauelshagen
2006-01-23 10:45 ` Lars Marowsky-Bree
2006-01-23 11:00 ` Heinz Mauelshagen
2006-01-23 12:54 ` Ville Herva
2006-01-23 13:00 ` Steinar H. Gunderson
2006-01-23 13:54 ` Heinz Mauelshagen
2006-01-23 17:33 ` Ville Herva
2006-01-24 2:02 ` Phillip Susi
2006-01-24 7:26 ` Error message for invalid initramfs cpio format? Ville Herva
-- strict thread matches above, loose matches on Subject: below --
2006-01-20 18:05 [PATCH 000 of 5] md: Introduction Hubert Tonneau
2006-01-20 17:01 Hubert Tonneau
2006-01-20 16:15 ` Christoph Hellwig
2006-01-22 6:45 ` Herbert Poetzl
2006-01-20 16:48 Hubert Tonneau
2006-01-17 6:56 NeilBrown
2006-01-17 8:17 ` Michael Tokarev
2006-01-17 9:50 ` Sander
2006-01-17 11:26 ` Michael Tokarev
2006-01-17 14:03 ` Kyle Moffett
2006-01-19 0:28 ` Neil Brown
2006-01-17 16:08 ` Ross Vandegrift
2006-01-17 18:12 ` Michael Tokarev
2006-01-18 8:14 ` Sander
2006-01-18 9:03 ` Alan Cox
2006-01-19 0:22 ` Neil Brown
2006-01-19 9:01 ` Jakob Oestergaard
2006-01-17 22:38 ` Phillip Susi
2006-01-17 22:57 ` Neil Brown
2006-01-17 14:10 ` Steinar H. Gunderson
2006-01-22 4:42 ` Adam Kropelin
2006-01-22 22:52 ` Neil Brown
2006-01-23 23:02 ` Adam Kropelin
2006-01-23 1:08 ` John Hendrikx
2006-01-23 1:25 ` Neil Brown
2006-01-23 1:54 ` Kyle Moffett
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