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 (because thats why I use Linux, because you can do things manually and you can learn a lot (even if you don't succeed in the end)
b) based on mdadm-imsm. Just there seems really /no/ documentation out there on how to do it (or I successfully managed to google around it since days now ;).
I will be very glad for any bit of information that might help me to eliminate some of the below parameters. And Again: I would be more than glad to contribute (back to the community) by assembling a wiki page about all this, once I figured out all the bits and pieces.
//// 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 Volumne (/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 itsself.
*** For grub: I did quiet 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. PosernP.S.: I would be still interested to hear how the two solutions that support an intel BIOS-supported (mdadm-imsm >=v3 and dmraid >=v1) raid compare to each other in terms of: speed (throughput), load/overhead (cpu/ram), stability, features.
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