Dmraid development status - 1.0.0rc15?

Heinz Mauelshagen heinzm at
Tue Sep 2 19:15:39 UTC 2008

Am Montag, den 01.09.2008, 21:35 +0300 schrieb Antti Mäkelä:
> On Mon, 1 Sep 2008, Heinz Mauelshagen wrote:
> > Am Sonntag, den 31.08.2008, 20:46 +0300 schrieb Antti Mäkelä:
> >> Hi,
> >
> > Hello.
> >
> > ASAP ;-)
> > We're settling the Intel contributions to allow for set create, remove,
> > rebuild and device failure event handling aiming fro F10 and RHEL5.3.
>    What about the kernel-specific stuff - does dmraid still require it's 
> own module or can it use the raid456 from main tree? (I'm running with 
> Gentoo's kernel with your patch added in).

It needs the dm-raid45 target, which we're aiming to upstream shortly.

>    My understanding has so far been than all that dmraid really does is 
> some device-mapper magic that the kernel can use it's normal software raid 
> functionalities on fakeraid arrays - eg. it just bootstraps the standard 
> kernel drivers - raid45 has been a special case since even Linux's own 
> software raid added support only recently. Or what's the deal?

It uses device-mapper to activate the respective mappings in the kernel
for discovered ATARAID+DDF1 mappings.

>    (At least the fact that I've run into some patches for dmraid that make 
> it use raid456 instead suggest this...)

See above. We're using our device mapper RAID5 target.


>    Anyway, thanks for answers.

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