lkml.org 
[lkml]   [2006]   [Jan]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 000 of 5] md: Introduction
On Sat, Jan 21, 2006 at 01:13:11AM +0100, Lars Marowsky-Bree wrote:
> On 2006-01-21T01:08:06, Heinz Mauelshagen <mauelshagen@redhat.com> wrote:
>
> > > A dm-md wrapper would give you the same?
> > No, we'ld need to stack more complex to achieve mappings.
> > Think lvm2 and logical volume level raid5.
>
> How would you not get that if you had a wrapper around md which made it
> into an dm personality/target?

You could with deeper stacking. That's why I mentioned it above.

>
> Besides, stacking between dm devices so far (ie, if I look how kpartx
> does it, or LVM2 on top of MPIO etc, which works just fine) is via the
> block device layer anyway - and nothing stops you from putting md on top
> of LVM2 LVs either.
>
> I use the regularly to play with md and other stuff...

Me too but for production, I want to avoid the
additional stacking overhead and complexity.

>
> So I remain unconvinced that code duplication is worth it for more than
> "hark we want it so!" ;-)

Shall I remove you from the list of potential testers of dm-raid45 then ;-)

>
>

--

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
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-
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/

\
 
 \ /
  Last update: 2006-01-23 10:47    [W:0.097 / U:37.112 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site