Re: SATA RAID ( ICH5R / Adaptec 1210SA) + RHEL4 ?

[Leos Bitto <nahant-list leos cz>]

Arjan van de Ven wrote:
> On Mon, 2005-07-11 at 17:29 -0400, Radu Brumariu wrote:
>
> > Hi,
> > I have a machine with 2 RAID controllers ( 1 ICH5R - onboard, and add-on 
> > card Adaptec 1210SA) .I also have 2 drives that I want to build a RAID 0 
> > with.
> > I tried this on both controllers :
> >    1. connect the drives to controller
> >    2. configure the controller in RAID 0
> >    3. boot off CD and start the RHEL4 installation
> >
> > At this point , when it comes down to partition drives, it complains 
> > that the drives have no partition information and asks to initialize 
> > them . Basically it doesn't see 1 drive ( the logical RAID 0 ) , but 2.
> >
> > I know that both controllers are software raid, but how can I make this 
> > work ? Any pointers, suggestions are appreciated :)
>
>
> you either need to use software raid, or, post install, the dmraid
> program.

I was trying to use dmraid some time ago when I installed RHEL4 ES (not 
Update 1) on an Asus motherboard with Promise FastTrak 376 with two SATA 
disks connected. I wanted to use RAID 1 (mirror). This hardware was 
running fine with Red Hat Linux 9 (with kernel 2.4) when I used a driver 
from Promise. With kernel 2.6 no driver is available from Promise, but 
there is a driver sata_promise in the standard kernel, which is able to 
see individual drives only (no RAID). I have read some information about 
dmraid, but I was not able to get it running. Maybe it would be better 
now with Update 1. At the end I used software RAID (md0) which worked 
fine. Is there any documentation how to get RHEL4 set up with dmraid? I 
would like to have all partitions mirrored (including the boot one). The 
best what I was able to find is for Gentoo at 
http://forums.gentoo.org/viewtopic-t-258981.html - but it seems to be 
too Gentoo-specific.


Leos