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 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel