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Old 01-18-2007, 05:59 AM   #1
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abit-aw9d raid5 with ICH7R

Hi guys,

I'm running into a boot problem configuring a softraid raid5 setup with suse 10.2 using the abit aw9d motherboard. For those unfamiliar with the board, here are the specs:

4 SATA 3Gbps Ports - Intel ICH7R
3 SATA 3Gbps Ports - Silicon Image 3132
1 e-SATA 3Gbps Port - Silicon Image 3132

The problem is that I have 5 identical drives, so I must span two controllers. I'm currently thinking of just doing 1 drive on the sil3132, and the 4 other drives in raid-5 on the ICH7R. The goal is to step the root on the 1 harddrive and store data on the raid 5.

My installer sees all these drives as drive 1-5. However, when configuring the above, I get a grub boot error: error 21.

Grub Loading Stage 1.5
Grub Loading please wait....
Error 21

So it appears that the sil3132 drive isn't detected in the bios (since that's where grub is looking). What's my options here? Is there anyway I can get the bios to detect it? It seems like the only drives that come up on the 'boot from harddrive' option are the 4 installed on the ICH7R.

Any workaround to this? What the experts suggest?

Old 02-12-2007, 08:16 AM   #2
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I have same problems with 3 drives - run live CD and then download DMRAID and run sudo dmraid -ay and it will tell you that it doesn't have the drivers for the Intel ICH7R.

Will have to wait for drivers or compatible.
Old 02-13-2007, 01:17 PM   #3
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Check if you can update your BIOS, and see if the drives are recognized then. Another thing you can do that SuSE recomends when your hardware isn't detected, is to load your modules manually. So when you boot from installer CD, boot with the option manual=1 and load your own modules. Make sure you load your correct modules for your SATA controller. If you are saying that it isn't detected in the BIOS that something must wrong with your motherboard. Because even if Grub doesn't detect the Hard drives, but the BIOS should, so if you get into the BIOS and check whether your drives are detected or not. If they aren't, then your Serial ATA controller could be DISABLED. If it's Enabled but still no drives, then something is defect. If your drives show up in the BIOS then try posting your setup here, showing which drives are connected to what controllers?

Good Luck
Old 02-13-2007, 06:01 PM   #4
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I recommend do not setup software RAID through the controller itself because it will not be reliable in Linux. Also software RAID level 5 penalizes the computer, so both the throughput (bandwidth) and the performance of the computer will be slower than you think. I recommend spending the money on a hardware RAID controller like from 3ware.

For a reliable RAID setup through software for IDE or SATA, I suggest at least three controllers when setting up RAID level 5.

If you really want to setup software RAID using the two controllers and still use it to boot. You will have to set aside a hard drive to boot from, so initrd file can be loaded from the boot loader and the kernel can take it from there by running dmraid.
Old 06-14-2007, 11:07 PM   #5
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Cool The ICH7R DOES work in openSUSE 10.2 ......

but it does require the use of a floppy drive and the proper driver my particular server is an asus rs120-e3(pa4) using the ich7r southbridge the drivers for the ich7r for suse are avaliable on the ASUS website here ""
it says it is for enterprise 9.0 but it works for 10.2 also with no mods I used RAWRITE on my windows machine to copy that file to a floppy I tried cd first but SUSE didn't like that so I recomend using a floppy .... no internal floppy ? visit best buy or circuit city buy and external one make your driver disk and return it they don't care.. next step insert your floppy disk into the drive on the computer to recive SUSE boot the SUSE install from DVD/CD I personally used the MINI boot CD and then extracted the dvd ISO to an external usb 2.0 hard drive makes the install literally twice as fast but you can do this using just the dvd/cd's anyway
just select the install option and it should do the rest all by itself you should not have to manually load the driver


raid, raid5, sata

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