Dear, I am using megaraid_sas. When I configured a raid, it did not appear in os as a device (/dev/sdx). I used to `modprobe -r megaraid_sas && modprobe megaraid_sas` to make it appear. But with the new version of megaraid_sas, which is always used by 6 others (not kernel modules), I can not `modprobe -r megaraid_sas` any more, I have to reboot. I think there should be a way to resolve this. Could someone tell me? Thanks.