Linux Rescan SCSI bus to add/remove a SCSI device without rebooting server

FC (Fibre Channel)

echo "1" > /sys/class/fc_host/host#/issue_lip

For other scsi attached storage:

echo "- - -" > /sys/class/scsi_host/host#/scan

To add a single device:

echo "scsi add-single-device <H> <B> <T> <L>" > /proc/scsi/scsi

Replace HBTL and # with actual values as per your setup.

For example, if you added a new disk to a Linux VM in VMware, just run the following:

echo "- – -" > /sys/class/scsi_host/host0/scan