Ocfs2 users - Dec 2011 - ocfs2 and drbd config recommendations

Hi to all.

Anybody has a recommendations about the configuration of drbd and
ocfs2, for example about fs-features or tunning values as:

O2CB_HEARTBEAT_THRESHOLD=31
O2CB_IDLE_TIMEOUT_MS=30000
O2CB_KEEPALIVE_DELAY_MS=2000
O2CB_RECONNECT_DELAY_MS=2000

I create my configuration with:

mkfs.ocfs2 -L "DatosAdantra" -N 2
--fs-features=backup-super,sparse,inline-data,metaecc,xattr,indexed-dirs,refcount,unwritten
/dev/drbd0

My goal is create the most stable configuration.. I am using debian
kernel 2.6.32-5-686-bigmem
The mount options are: /dev/drbd0 on /datos/datosadantra type ocfs2
(rw,_netdev,heartbeat=local)

Any recommendations?