URGENT: Need help rebuilding iir RAID5 array with failed drive

[Søren Schmidt]

On 29Jun, 2008, at 16:24 , Steven Hartland wrote:

>
> ----- Original Message ----- From: "Benjamin Close" <Benjamin.Close at clearchain.com 
> >
>
>> Perhaps a lesson as developers we should take from this, is to put  
>> a warning in ata about raid5. It's fooled Garret into believing he  
>> had a raid5, how many others are also using ata believing their  
>> raid5 is a raid5. We should warn people in the future rather than  
>> just saying 'its in the docs'. A kernel warning at attach is much  
>> more visible.
>
> Although it is more visible, personally I would prefer it to just fail
> instead of proceeding. RAID5 is not RAID5 without parity so why even
> allow it to continue and hence risk such an unrecoverable situation?

Well, this has been rehashed many times before, it has been disabled,  
put a warning in the boot log, warning in the docs, all 3 was the  
favorite at the time it was done.

I'm all ears for what the decision might be this time, just get  
consensus and I'll flip the right switch.

-Søren