the link between nodes is ??? 1Gb/s ??? , 10Gb/s ??? ... the Hard Disks are ??? SATA 7200rpm ???, 10000rpm ???, SAS ???, SSD ???...
400M to 680M with a 10Gb/s link and SAS 15.000 rpm is OK but less ... El dom, 24-05-2015 a las 20:43 +0200, Ben RUBSON escribió: > > Le 12 avr. 2014 à 17:23, Ben RUBSON <[email protected]> a écrit : > > > > Hello, > > > > Let's assume the following configuration : > > disk { > > c-plan-ahead 0; > > resync-rate 680M; > > c-min-rate 400M; > > } > > > > Both nodes are uptodate, and on the primary, I have a test IO burst > > running, using dd. > > > > I then cut replication link for a few minutes so that secondary node will > > be several GB behind primary node. > > > > I then re-enable replication link. > > What I expect here according to the configuration is that secondary node > > will fetch missing GB at a 400 MB/s throughput. > > DRBD should then prefer resync IOs over application (dd here) IOs. > > > > However, it does not seems to work. > > 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. > > Of course this is not the expected behaviour. > > > > Did I miss something ? > > Hello, > > Could I have your feedback please regarding this ? > > Thank you ! > > Ben > > _______________________________________________ > drbd-user mailing list > [email protected] > http://lists.linbit.com/mailman/listinfo/drbd-user _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user
