On 30/07/2014 23:30, NeilBrown wrote:

On Wed, 30 Jul 2014 20:24:30 +0000 Markus Stockhausen
[off-list ref] wrote:

quoted

Hi,

the last days I tried to understand the RAID6 logic when recalculating
P/Q parity (or syndrome) if only parts of a stripe are updated....
...
Markus

Please see
   http://comments.gmane.org/gmane.linux.raid/42559

Yes, this is something we probably want.
The previous effort stalled somehow.  Maybe it just needs someone to start
pushing again.

NeilBrown

This feature would be wonderful !!
upvote!