getting grub installed on an intel imsm raid-0

[K. Posern]

Hi all,

/// The problem ///

There are binary packages out there that do the trick based on 
device-mapper (dmraid) (e.g. Ubuntu). But I would like to do it

        a) manually
        b) based on mdadm-imsm

//// The situation ///

I am still trying to figure out how to install grub / grub2 on my intel 
imsm raid. And it's a striping RAID-0. Because the documentation out 
there is overall for RAID-1 (or 5) and the few bits I found for RAID-0, 
just do not work for me.

/// The questions ///

Maybe someone could shed some light on these open questions:

	a) Do I need to install it to the Volume (/dev/md126) or to the 
Container (/dev/md127)? - My guess: The volume because it represents the 
RAID, hence should be what gets assembled for the int13 BIOS handler by 
the Option-ROM of the intel-sw-raid-controller.

        b) What device do I need to put in the /grub/boot/device.map file as 
(hd0):
        (/dev/md126, /dev/md127 or ...)?
        My guess: The same like a).

        c) Do you suggest grub1 (grub legacy) or grub2?

	    *** For grub2: The default way to install it: grub-install does not 
(seem to) work as grub2 then tries to find the /boot device itself and 
grub built from bzr does not (yet) support mdadm arrays with metadata 
v1.2 that are partitioned :(
	As I am quiet new to grub2 it would be very helpful to get an idea of 
what of the (many) tools to use and if possible with what parameters.
	Plus I wonder if with grub2 there will be problems because grub2 will 
try to assemble the RAID itself.

	    *** For grub: I did some installations but all my trials did always 
end in an Error 22 on "setup (hd0)" in the grub shell. <<< If grub would 
be your recommendation I can post the details!


Thanks a lot for any hint in advance!


K. Posern

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