>From the Lustre manual:- With OST servers it is possible to have a load-balanced active/active configuration. Each node is the primary node for a group of OSTs, and the failover node for other groups. To expand the simple two-node example, we add ost2 which is primary on nodeB, and is on the LUNs nodeB:/dev/sdc1 and nodeA:/dev/sdd1. This demonstrates that the /dev/ identity can differ between nodes, but both devices must map to the same physical LUN. In this type of failover configuration, you can mount two OSTs on two different nodes, and format them from either node. With failover, two OSSs provide the same service to the Lustre network in parallel. In case of disaster or a failure in one of the nodes, the other OSS can provide uninterrupted filesystem services. For an active/active configuration, mount one OST on one node and another OST on the other node. You can format them from either node.
Anyone done this on a production system? Experiances? Comments? Cheers Andy _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
