On 10-11-10 07:17 AM, Gordan Bobic wrote: >>> If you want the FS mounted on all nodes at the same time then all >>> those nodes must be a part of the cluster, and they have to be >>> quorate (majority of nodes have to be up). You don't need a quorum >>> block device, but it can be useful when you have only 2 nodes. >> >> At term, I will have 7 to 10 nodes, but 2 at first for initial setup >> and testing. Ok, so if I have a 3 nodes cluster for exemple, I need at >> least 2 nodes for the cluster, and thus the gfs, to be up ? I cannot >> have a running gfs with only one node ? > > In a 2-node cluster, you can have running GFS with just one node up. But > in that case it is advisble to have a quorum block device on the SAN. > With a 3 node cluster, you cannot have quorum with just 1 node, and thus > you cannot have GFS running. It will block until quorum is re-established. With a quorum disk, you can in fact have one node left and still have quorum. This is because the quorum drive should have (node-1) votes, thus always giving the last node 50%+1 even with all other nodes being dead. -- Digimer E-Mail: digimer@xxxxxxxxxxx AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
