On Wed, Jun 30, 2010 at 04:53:23PM -0700, Riches Jr, RobertX M wrote: > I didn't see any queues or caches in dm-linear that would need to be flushed. It's your test script that is not behaving as you expect:) Add conv=odirect to dd Add blockdev --flushbufs after other writes. Alasdair -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel