On 01/26/2012 09:02 AM, Corey Kovacs wrote: > My first thought is that since a two node cluster is at best a misnomer, > then clvmd won't work as expected since it might require the operational > semantics of a proper quorum based cluster (three nodes/votes or > better). That's how I understand it anyway so if anyone has info the > contrary, please chime in and correct me. If it work as I think it does, > then perhaps the devs could insert a check to ensure all pre reqs are > met before even attempting this and spitting out the appropriate message? > > One thing you could take advantage of is qdiskd in order to attain a > quorum based cluster with two nodes. It's not an ideal solution but it > can work quite nicely if you are limited to two nodes. > > If it will in fact work properly with a two node "cluster" then it could > be the result of a node being fenced and not acknowledged properly? > > Not much help but some things to think about. > > -C DLM works fine on 2-node as quorum is allowed with just one node, thanks to the 'expected_votes="1" two_node="1"' attributes. As for qdisk, you can't use it on DRBD, only on a SAN (as it is possible to have a split-brain condition where both nodes go StandAlone and Primary, this allowing both nodes to think they have the qdisk vote). -- Digimer E-Mail: digimer@xxxxxxxxxxx Papers and Projects: https://alteeve.com -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
