grep mpt /sys/class/scsi_host/host?/proc_name
This would return host number
as host2
etc.
/sys/class/scsi_host/host2/proc_name:mptspi
Rescan the bus with the following command
echo "- - -" > /sys/class/scsi_host/host2/scan
– – –
indicates all controllers, channels and luns should be scanned