On Fri, Oct 17, 2008 at 01:27:02PM +0200, Federico Simoncelli wrote: > Hi all, > I am managing a two-node cluster without qdisk and to avoid the > fencing loop I thought to implement a startup quorum. Sounds like you want quorum of 2 when nodes are joining, but quorum of 1 after a node fails. That sounds reasonable. To do that manually, you *don't* set two_node/expected_votes in cluster.conf, and then manually run cman_tool expected -e 1 after a node fails. Here's another possibility I hadn't thought of before: . don't set two_node/expteced_votes in cluster.conf . edit init.d/cman and possibly /etc/sysconfig/cman to do cman_tool join -w (joins cluster and waits to be a member) cman_tool wait -q (waits for quorum, both nodes to be members) cman_tool expected -e 1 (change expected votes to 1) The effects of this will be: . a node needs to see the other to get quorum and start up . after both nodes see each other, if one fails, the other will fence it and continue . after both nodes see each other, if they become partitioned, they will race to fence each other . if both nodes are restarted while they are still partitioned, neither of them will be able to start Dave -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
