Hi Lon Me again, always fighting with my two node cluster with quorum disk ;-) I've not yet received your response to my last email if you have already answered, because I 'm in digest mode, so , sorry if ... After again re-read lots of texts,FAQs, and emails from this ML about quorum disk on two nodes cluster, I've got this conclusion, please tell me if I'm right or not : recall : my first goal in introducing quorum disk in my two-nodes clusters is to avoid race-to-fence and eventually dual-fencing between both nodes, in case of heart-beat network failure from one side (ethernet card, ethernet cable or whatever). So my conclusion is that it can't be achieved with a quorumd record without at least one heuristic which ping another host than the adjacent node on the same network where the heart-beat works. Meaning that in cluster.conf I should have : <quorumd interval="1" label="QDISK_5_0" min_score="1" tko="10" votes="1"> <heuristic interval="10" program="ping -t1 -c1 <another host>" score="1"/> </quorumd> Am I right when telling that this heuristic is mandatory to avoid race-to-fence and eventually dual-fencing ? I hope so ... it would be the end for me about quorum disk ... ;-) Thanks for your answer. Alain -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster