On Wed, Jan 12, 2011 at 3:43 AM, Kit Gerrits <kitgerrits@xxxxxxxxx> wrote: > > > B/ > If you want to share a REAL filesystem LUN between cluster nodes, you can > set is up as a Cluster LVM. > Clustering will then guarantee that only one server can mount it at a time. > Should clustering fail for some reason, the LVM will be disabled. > Should the machine running the LVM volume crash, it will be fenced > (rebooted) and the LVM disabled. > Once the machine has been successfully fenced, the LVM will be re-enabled, > so other cluster members can mount volumes on there. > > As a quick note, you should not use part of the LVM as the qdisk. The cluster needs to be quorate for clvmd to run. In a two node cluster, you need the first node plus the qdisk to be quorate. You end up on a chicken and the egg situation. My two node cluster uses part of a SAN disk as the qdisk. The rest of the SAN disk is a PV used by the LVM. Keith -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
