Re: [PATCH 000 of 5] md: Introduction

[Lars Marowsky-Bree]

On 2006-01-21T01:08:06, Heinz Mauelshagen <mauelshagen@xxxxxxxxxx> 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?

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...

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



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