[please CC me on any replies, as I'm not on m...@openbsd.org]

Siju George writes:
> Hi,
> 
> I am not able to re write the parity for my Raid set.
> 
> # raidctl -Sv raid0
> raid0 Status:
> Reconstruction is 100% complete.
> Parity Re-write is 100% complete.
> Copyback is 100% complete.
> raidctl: ioctl () failed
> # raidctl -sv raid0
> raid0 Components:
>            /dev/wd0d: failed
>            /dev/wd1d: optimal

You cannot rebuild parity in this case because one of your disks has 
failed (parity re-writing can only happen if all the disks are 'good').  
If you wish to attempt to rebuild that disk, you can do so 
with: raidctl -vR /dev/wd0d raid0
to do a reconstruct-in-place.

Of course, finding out the real reason for why that disk has failed 
should also be on the top of your TODO list :)  (e.g. if the disk is 
having physical read/write errors, you proably want to replace it 
before doing the rebuild. )

Later...

Greg Oster

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