[dm-devel] Is there a way to see updated contents of a DM target's underlying device while the DM target is in use?

[Alasdair G Kergon]

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