When you are running Red Hat Enterprise Linux 4 series with DM-Multipath and the software iSCSI initiator, you can discover new LUNs by reloading the iSCSI service on the host. Reloading the service displays all the newly created LUNs that have been mapped to the host.
You cannot view new LUNs until the operating system discovers them. After the LUNs have been discovered, they are automatically added to the DM-Multipath configuration.
