This guide describes DRBD version 8.4 and above. For 8.3 please look here.
For Xen Domain-0 kernels, it is recommended to load the DRBD module
with the set to 1. To do so, create (or open) the file
/etc/modprobe.d/drbd.conf and enter the following line:
options drbd disable_sendpage=1
This guide describes DRBD version 8.4 and above. For 8.3 please look here.