To configure the newly added LUNS on RHEL:
Alternatively, we canrun the re-scan-scsi script.
To scan new LUNs on Linux operating system which is using QLogic driver
You need to find out driver proc file /proc/scsi/qlaXXX.
For example on my system it is /proc/scsi/qla2300/0
Once file is identified you need to type following command (login as the root):
# echo "scsi-qlascan" > /proc/scsi/qla2300/0 # cat /proc/scsi/qla2300/0
Now use the script rescan-scsi-bus.sh new LUN as a device. Run script as follows:
# ./rescan-scsi-bus.sh -l -w
The output of ls -l /sys/block/*/device should give you an idea about how each device is connected to the system.