Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Felix, This one has been of great help to me facing very odd errors over 10Gb replication links. It's been 80% of the resolution of my problems. http://www.kernel.org/doc/ols/2009/ols2009-pages-169-184.pdf Regards, Pascal. -----Message d'origine----- De : drbd-user-bounces at lists.linbit.com [mailto:drbd-user-bounces at lists.linbit.com] De la part de Felix Frank Envoyé : vendredi 8 février 2013 10:08 À : Holger Steinhaus Cc : drbd-user at lists.linbit.com Objet : Re: [DRBD-user] ProtocollError using on-congestion pull-ahead Hi, On 02/07/2013 08:58 PM, Holger Steinhaus wrote: > resync-rate 200M; Uhm, what? That's more than your link can do. You want to max this at 30% of your maximum throughput, tops. Otherwise the resync may interfere with on-line write performance. > al-extents 389; Why? This should be chosen to be as large (a prime number) as possible. Have you looked through http://www.drbd.org/users-guide/s-throughput-tuning.html? It can also make sense to tune the tcp buffers on OS level (i.e. sysctl). I can't find any good docs about that ad hoc, though. HTH, Felix _______________________________________________ drbd-user mailing list drbd-user at lists.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user