On the node, which is the younger primary were you want to discard the changes type
node1 ~ # drbdadm secondary all
node1 ~ # drbdadm disconnect all
node1 ~ # drbdadm -- --discard-my-data connect all
Then go to the node with the correct primary data and connect it, too.
node2 ~ # drbdadm connect all
The orignal howto fom DRBD wont work for me, since there is no disconnect
Be careful! If you're are in doubt backup data or try a rsync with both filesystems mounted offline w/o DRBD. This will prevent impacts when syncing in the wrong direction.
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