Re: [Drbd-dev] [PATCH 04/30] drbd: Implement handling of thinly provisioned storage on resync target nodes

[Bart Van Assche]

On 04/25/2016 05:10 AM, Philipp Reisner wrote:
If during resync we read only zeroes for a range of sectors assume
that these secotors can be discarded on the sync target node.

Hello Phil,

With which interconnect(s) has this patch been tested? I'm afraid that 
for high-speed interconnects this patch will slow down I/O instead of 
making it faster because all_zero() examines all data before it is sent.

Bart.