Arjan, Alan:

I didn't know that dmraid supports MegaIDE nowadays.  Thanks for the
tipoff, and I apologize for the unnecessary traffic.  I'll look into dmraid.

--D

Alan Cox wrote:

On Iau, 2005-07-21 at 15:37 -0700, Darrick J. Wong wrote:

quoted

I've noticed what might be a small bug with the serverworks driver in
2.6.12.3.  The IBM HS20 blade has a ServerWorks CSB6 IDE controller with
an optional LSI MegaIDE RAID BIOS (BIOS assisted software raid, iow).

With a binary only proprietary driver.

quoted

(ServerWorks) to IBM.  However, the serverworks driver doesn't notice
this and will attach to the controller anyway, thus allowing raw access
to the disks in the RAID.  An unsuspecting user can then read and write
whatever they want to the drive, which could very well degrade or
destroy the array, which is clearly not desirable behavior.

It may be appropriate for some vendor situations but it isn't
appropriate for the base kernel to default to assuming the user wants to
use binary only drivers instead of dmraid. Especially as the raid
formats for this hardware are partially known despite no assistance I
know of from the vendor.

Alan