Promise Fastrak ATA RAID 1 rebuild failed

[Chad Leigh -- Shire.Net LLC]

On Feb 10, 2004, at 11:39 PM, Michael Shafae wrote:

>
> Hi,
>
> I have an intel motherboard, s845wd1, with an onboard Promise Fastrak 
> ATA RAID. Its running 4.8p10 on two mirrored Seagate 80 GB disks. It 
> lost the mirror reporting this:
> ad6: hard error reading fsbn 140018943 of 0-127 (ad6 bn 140018943; cn 
> 138907 tn
> 10 sn 57) trying PIO mode
> ad6: DMA problem fallback to PIO mode
> ad6: DMA problem fallback to PIO mode
> ad6: DMA problem fallback to PIO mode
> ad6: DMA problem fallback to PIO mode
> ad6: hard error reading fsbn 140019007 of 0-127 (ad6 bn 140019007; cn 
> 138907 tn
> 11 sn 58) status=59 error=00
> ar0: WARNING - mirror lost
>

<snip>

> If I understand this correctly, ar0 is now basically ad4. ad4 was the 
> one that had the read error so ad6 couldn't be rebuilt. ad6 had a 
> similar error and that's why the mirror was lost.
>
> I would like to rebuild the mirror, but I don't see how I can do this 
> without re-installing the entire system. Has anyone had any similar 
> experience or some insight on how I can get out of this bind?
>

I don't use the atacontrol RAID stuff but I think your problem is that 
your disk has failed and you need a new disk.  Get a new disk and see 
if you can rebuild it.

Chad