On Wed, Jan 18, 2012 at 2:58 PM, Darrick J. Wong <djwong@xxxxxxxxxx> wrote:
> Or possibly modify md-raid5 not to snapshot dirty pages prior to xor/write?
> (I never really bothered to find out if it really does this.)
It does. ops_run_biodrain() copies from bio to the stripe cache
before performing xor.
--
Dan
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