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 –c
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August 15th, 2008 (3 weeks ago) at 8:00 am
Hi Vivek,
Thanks for the very informative info. However I’m not sure if your walkthrough above will cause the server to reboot. We have an oracle rac on the production site and its crucial if you could let us know if there will be no side effect whatsoever since oracle have a mechanism that will cause a server to reboot once there is the kernel hang for 5 second. Appreciate your advice.