Re: [PATCH] md: Fix data corruption when a degraded raid5 array isreshaped.

[Dan Williams]

On Thu, 2008-01-03 at 15:46 -0700, NeilBrown wrote:
> This patch fixes a fairly serious bug in md/raid5 in 2.6.23 and 24-rc.
> It would be great if it cold get into 23.13 and 24.final.
> Thanks.
> NeilBrown
> 
> ### Comments for Changeset
> 
> We currently do not wait for the block from the missing device
> to be computed from parity before copying data to the new stripe
> layout.
> 
> The change in the raid6 code is not techincally needed as we
> don't delay data block recovery in the same way for raid6 yet.
> But making the change now is safer long-term.
> 
> This bug exists in 2.6.23 and 2.6.24-rc
> 
> Cc: stable@xxxxxxxxxx
> Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
> Signed-off-by: Neil Brown <neilb@xxxxxxx>
> 
Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx>



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