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To: Philipp Reisner <philipp.reisner@linbit.com>, Jens Axboe <axboe@fb.com>,
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From: Bart Van Assche <bart.vanassche@sandisk.com>
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Date: Mon, 25 Apr 2016 08:28:45 -0700
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Subject: Re: [Drbd-dev] [PATCH 04/30] drbd: Implement handling of thinly
 provisioned storage on resync target nodes
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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.