atacontrol rebuild, how?

Benjamin Close cisbjc at
Wed Sep 1 16:38:18 PDT 2004

Perhaps something worth trying is the following - It's what I have to do 
to get the promisc card I use to rebuild:

    - Identify the channel the drive is on (ie ad6 on ata3)

atacontrol detach ata3
atacontrol attach ata3
atacontrol addspare ar0 ad6
atacontrol rebuild

The command exits straight away but if you run: atacontrol status ar0
I get a 'REBUILDING 0%' message

Also checking the ps output shows a rebuild thread.

Might work, for you.


Ben Stuyts wrote:

> Hi,
> I have installed beta-2 (31082004) on a Supermicro 5013C-T (P4SCE 
> motherboard with ICH5R, and two WD 74 GB Raptor SATA drives, which I 
> want to mirror).
> I know the ICH5R is not a real raid controller, but I'm trying to get 
> it to work using atacontrol and the built-in RAID1 support.
> Using the procedure described in 
> (thanks!) I managed to get FreeBSD installed on RAID1 on ar0.
> Next I tried to remove a drive (atacontrol detach), and even zeroed 
> the first area of the disk. After reattaching the drive, I cannot get 
> atacontrol to rebuild the drive. If I do atacontrol rebuild ar0, it 
> does absolutely nothing. From browsing this mailing list I see that 
> this seems to be a problem with using non-raid controllers, but will 
> this be improved in the future? Or am I doing something wrong?
> What other options do I have? Is geom-vinum ready for this? All I want 
> is a fully mirrored system (incl root and swap).
> I could put a simple raid controller in, like the Promise S150 TX2Plus 
> or TX4, but if I can get it to work with the ICH5R controller that 
> would be great.
> Thanks,
> Ben
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