Saturday, 21 January 2012

How to Scan new LUNs on Linux with QLogic driver


Q: I am using QLogic driver and I would like to know how do I scan new LUNs on Linux operating system?
A: 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 user):
# 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 


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