Rescan for new LUNs in RHEL

Use following command to scan for new LUNs

# echo '- - -' > /sys/class/scsi_host/hostX/scan

When you discover the SAN for the first time, you may also use following command (don’t use it afterwards because it can be destructive !).

echo 1 > /sys/class/fc_host/hostX/issue_lip