Recently I ran into a situation where passing the “- – -” values to iscsi_host/host#/scan didn’t work for me. I was sure that I had run this before on CentOS6, but to no avail I could not find a value in the /host portion.
So, this what I discovered! The friendly folks at Red Hat have created a script for dealing with this.
1. yum install sg3_utils
2. run rescan-scsi-bus.sh (they added it to the path 😉 booyah!)
Now you should have your drive all discovered and ready for fdisk!
Here’s the original link for this info: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/rescan-scsi-bus.html