[CentOS] Re: Raid5 issues

[Scott Silva]

Ruslan Sivak spake the following on 5/5/2007 9:16 AM:
> William Warren wrote:
>> rus,
>>
>> This is critical
>>
>> turn off the raid functions of your bios.  You must do this or the
>> fakeraid of the bios WILL interfere with md's ability to perform. 
>> Then try building the md raid.
>>
>>
> William,
> 
> This might be a bit of a problem.  The computer is quite old, and I had
> to get a raid card just to be able to connect sata drives to it.  The
> bios boot order only lists the cdrom (I can't even get it to boot from
> floppy).  The only way I can get it to boot off these hard drives is if
> I have them in some sort of raid set up through the card's bios (even
> concatenation works).  Unfortunatelly, with concatenation, if 1 drive
> dies, I am forced to recreate the array, which kills things.
> I think I need to use the fakeraid driver.  It keeps popping up anyway
> with weird error messages.  For example, when there is no raid set up, I
> keep getting something like this:
> 
> Error adding sda to set silxxxxxxx: Raid type 234 is not supported. 
> (This is from memory, so probably not exactly correct).
> I tried updating the bios, but I can't even seem to do that.  It won't
> boot off the floppy, and when I boot of any dos based cdrom, I can't see
> the floppy.  (I have external usb floppy.  The internal one doesn't seem
> to work).
> Russ
Can you add each drive as a separate stripe?
IE.. 4 drives, 4 arrays, 1 drive per array. I had to do that with an old
promise card I used as a controller.

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