Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
> Hi
>
> I've configured DRBD with a view to use it with MySQL (and later on
> Pacemaker + Corosync) in a 2 nodes primary/secondary
> (master/slave) setup.
>
> ...
>
> No replication over the 1Gb/s crossover cable is taking place since the
> secondary node is down yet there's x2 lower disk performance.
>
> I've tried to add:
> disk {
> disk-barrier no;
> disk-flushes no;
> md-flushes no;
> }
> to the config but it didn't seem to change anything.
>
> Am I missing something here?
> On another note is 8.4.1 the right version to use?
>
If you can do it just for testing, try changing to protocol B with one primary and one secondary and see how that impacts your performance, both with barrier/flushes on and off. I'm not sure if it will help but if protocol B makes things faster then it might hint as to where to start looking...
James