Can someone explain how I detect drive insertions and deletions when using the SG driver?
Do the interface cards (in this case QL23xx) provide any method of notifying when a drive is either plugged in or removed?
I know I can cause a rescan of the QL using
echo "scsi-qlascan" > /proc/scsi/qla2xxx/<cardnum>
But I don't know how to tell what this did.