hi out there,

I just got myself a new motherboard (Soyo Dragon Raid Plus SY-K7V). 

As a hopefully "useful" feature the board comes with this Promise
FastTrak Raid Controller. Although not listed as officially supported
hardware for LM8.1 I learned from various postings on various newsgroups
and lists like this that the controller including its Raid functionality
was actually supported by the most recent kernels. So I downloaded the
most recent mdk-kernel sources (2.4.17).

Surprizingly I found the following comments about my controller (and
ataraid in general) in the kernel documentation:

excpert from Configure.help
---------CUT----------
Support for IDE Raid controllers
CONFIG_BLK_DEV_ATARAID
  Say Y or M if you have an IDE Raid controller and want linux
  to use its softwareraid feature.  You must also select an
  appropriate for your board low-level driver below.

  Note, that Linux does not use the Raid implemetation in BIOS, and
  the main purpose for this feature is to retain compatibility and
  data integrity with other OS-es, using the same disk array. Linux
  has its own Raid drivers, which you should use if you need better
  performance.

Support Promise software RAID (Fasttrak(tm))
CONFIG_BLK_DEV_ATARAID_PDC
  Say Y or M if you have a Promise Fasttrak (tm) Raid controller
  and want linux to use the softwareraid feature of this card.
  This driver uses /dev/ataraid/dXpY (X and Y numbers) as device
  names.

  If you choose to compile this as a module, the module will be called
  pdcraid.o.
---------CUT---------

So is it true that the FastTrak Raid controller is only a software-raid
controller? Why would anybody use an extra controller for software raid
if one can get Raid at better performance from the kernel? And if I
remember it right, M$ products have built in software-raid features as
well ...

Anyway, I was still curious and wanted to give the controller a try. So
I created the required devices under /dev/ataraid and insmod'ed
ataraid.o and pdcraid.o into my system. But that only leads my to the
same point every time: I get a nice kernel panic message from the
module.

Has anybody got this thing working unter any kernel version?

Udo

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