Thanks Marc and Jos for your pieces of advice, but it does not seems to work: I tried your first suggestion with qdisk votes=2 and expected_votes=3: <quorumd interval="1" tko="10" votes="2" log_level="9" log_facility="local4" status_file="/tmp/qdisk_status" label="CS4QUORUMDISK"> </quorumd> ... <clusternode name="node0" votes="1"> ... <clusternode name="node1" votes="1"> ... <cman expected_votes="3" two_node="0"/> and I can't start cman on only one node, it needs cman on second node to be started, and I don't understand why ... I tried (just to give it a try because I would have not understood if it had worked!) also qdisk votes=2 and expected_votes=2, but same result... Each times, in file "messages" , I see Cluster Inquorate : Sep 26 15:04:40 s_sys@bali0 ccsd[12224]: Connected to cluster infrastruture via: CMAN/SM Plugin v1.1.7.4 Sep 26 15:04:40 s_sys@bali0 ccsd[12224]: Initial status:: Inquorate until the cman of second node is started and then : Sep 26 15:07:01 s_sys@bali0 ccsd[12224]: Cluster is quorate. Allowing connections. I have read and read again the FAQ page, especially the # you mention, but don't understand why it does not work for me ... Except if my quorum disk is not working ? But command mkqisk returns : #mkqdisk -L mkqdisk v0.5.1 /dev/sdk: Magic: eb7a62c2 Label: CS4QUORUMDISK Created: Tue Sep 18 16:33:40 2007 Host: node but is it sufficient to know if Quorum disk is working correctly ? Any new clue or suggestion is welcome. Thanks Regards Alain -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster