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SubjectRe: [PATCH] serverworks should not take ahold of megaraid'd controllers
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.


Alan Cox wrote:
> On Iau, 2005-07-21 at 15:37 -0700, Darrick J. Wong wrote:
>>I've noticed what might be a small bug with the serverworks driver in
>> 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.
>>(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
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