On Sunday February 5, [EMAIL PROTECTED] wrote:
> I can see what I did now. Very silly.
> 
> I created a RAID 5 with 4 disks then went about hot adding disks.  
> Silly me thinking it would increase the active space. Of course with  
> the parity being shared through the active disks this doesn't makes  
> sense.
> 
> I was wanting to define a systematic way that I could start with a  
> small number of disks and then expand the RAID as I needed more space  
> (and could afford more disks).
> 
> Is raidreconf the only way for reconfiguring a live system?
> 

raidreconf doesn't allow you to reconfigure a live system - only an
inactive system.
But for the moment, that is the only way, yes.

In 2.6.17 or 2.6.18 it should be possible to restripe a raid5 to have
a larger number of devices.  This can happen while the array is in
active use.
The code is mostly written, and could be used today, but I don't
recommend it on valuable data yet as there are known bugs.

NeilBrown
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