<div dir="ltr">Hello,<br><br>Let's assume the following configuration :<br>disk {<br> c-plan-ahead 0;<br> resync-rate 680M;<br> c-min-rate 400M;<br>}<br><br>Both nodes are uptodate, and on the primary, I have a test IO burst running, using dd.<br>
<br>I then cut replication link for a few minutes so that secondary node will be several GB behind primary node.<br><br>I then re-enable replication link.<br>What I expect here according to the configuration is that secondary node will fetch missing GB at a 400 MB/s throughput.<br>
DRBD should then prefer resync IOs over application (dd here) IOs.<br><br>However, it does not seems to work.<br>dd still writes at its best throughput, meanwhile reads are made from the primary disk between 30 and 60 MB/s to complete the resync.<br>
Of course this is not the expected behaviour.<br><br>Did I miss something ?<br><br>Thank you very much,<br><br>Best regards,<br><br>Ben<br><br></div>