Can you tell me what kind of hardware do you want to be found by the system ? Any HBA, ethernet card, SCSI equipment or other ?
It would be perfect if could give me the kind, manufacturer, and product type of the card. So that I could give you the precise command to reload the driver stack.
But if you feel a little ninja, this is the path to follow :
For example, to force a rescan for a QLogic HBA :
# echo "scsi-qlascan" > /proc/scsi/<driver-name>/<adapter-id>
- <driver-name> = qla2100, qla2200, qla2300 (2.4 kernel drivers) or qla2xxx (2.6 kernel drivers)
- <adapter-id> = the instance number of the HBA
Then, you have to force the 'mid-layer' to rebuild the node entry table :
# echo "scsi add-single-device 0 1 2 3" >/proc/scsi/scsi
- "0 1 2 3" = your "Host Channel ID LUN"
That's it. Don't forget to give me the details if you want me to help you a little bit more.