[Drbd-dev] [PATCH 22/23] drbd: implement REQ_OP_WRITE_ZEROES
Martin K. Petersen
martin.petersen at oracle.com
Thu Mar 30 17:20:09 CEST 2017
Mike Snitzer <snitzer at redhat.com> writes:
> I can work on this now. Only question I have is: should DM thinp take
> care to zero any misaligned head and tail? (I assume so but with all
> the back and forth between Bart, Paolo and Martin I figured I'd ask
Yep, let's make sure our semantics match the hardware ditto.
- So write zeroes should behave deterministically and explicitly handle
any blocks that can't be cleared via deprovisioning.
- And discard can work at the discard granularity in a
Martin K. Petersen Oracle Linux Engineering
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