Getting Gentoo to work on a Asus P5Q Pro mobo with fake RAID

AZ Nomad wrote:

> On Tue, 28 Jul 2009 01:57:33 +0200, Marcel Bruinsma
> <we-love-all-spam RemoveThis @gmail.com> wrote:
>>AZ Nomad wrote:
>
>>> On Mon, 27 Jul 2009 22:58:24 +0200, Marcel Bruinsma
>>> <we-love-all-spam RemoveThis @gmail.com> wrote:
>>>
>>>> If the root fs is on a raid0 (or raid10, or raid5) md array, you
>>>> need a separate boot fs. If you care about fault tolerance (raid0
>>>
>>> dmraid starts the software raid system before any partitions are
>>> mounted. It boots a partition off a raid volume just fine.
>
>>Which boot loader are you using?
>
> grub.

Looks like I'll have to update mine. My grub can't load the
kernel from a striped array (or a raid5). I wasn't aware the
more recent grub has improved that much.

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AZ Nomad wrote:

> On Tue, 28 Jul 2009 06:06:24 +0200, Marcel Bruinsma
> <we-love-all-spam.TakeThisOut@gmail.com> wrote:
>>AZ Nomad wrote:
>
>>> On Tue, 28 Jul 2009 01:57:33 +0200, Marcel Bruinsma
>>> <we-love-all-spam.TakeThisOut@gmail.com> wrote:
>>>>AZ Nomad wrote:
>>>>>
>>>>> dmraid starts the software raid system before any partitions are
>>>>> mounted. It boots a partition off a raid volume just fine.
>>>
>>>>Which boot loader are you using?
>>>
>>> grub.
>
>>Looks like I'll have to update mine.
>
> I first used the gentoo dmraid recipe back in 2005. I doubt you have
> an older version.

Correct, I don't.

> The recipe is something like this:
[...]
> Google for "gentoo dmraid"
> http://en.gentoo-wiki.com/wiki/RAID/NVRAID_with_dmraid

Thank you, good (simple) recipe. The 'how-to' is clear, the 'why'
still escapes me. Somehow, my brain keeps telling me, the driver
is necessary to load the kernel; a chicken-and-egg problem. But,
apparently, grub can do it without driver.

Got a new box coming; ideally I'ld like just one raid10 with six
disks, if the chip (ICH10R) supports it. I'll aplly the recipe and
compare with the md-raid I'm using now.

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