Re: RAID5 disk failure during rebuild of spare, any chance of recovery when one of the failed devices is suspected to be intact?

[Tim Small <tim@seoss.co.uk>]

On 16/08/10 07:12, Nicolas Jungers wrote:
> On 08/16/2010 07:54 AM, Tor Arne Vestbø wrote:
>> You mean you sdc and sde plus either sdb or sdd, depending on which
>> one I think is more sane a this point?
>
> I'd try both.  Do a ddrescue of the failing one and try that (with 
> copy of the others) and check what's coming out.

As an alternative to using ddrescue, you could quickly prototype various 
arrangements (without writing anything to the drives) using a 
device-mapper copy-on-write mapping - I posted some details to the list 
a while back when I was trying to use this to reconstruct a hw raid 
array...  Check the list archives for details.

Tim.

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