Best I can offer is an avoidance of the problem.
You have nvidia's software raid, which is fake proprietary software RAID.
The above card will work with any OS, including linux, natively(no driver install). It costs as much as your motherboard, but will last longer than your motherboard. What I do is disable the nvraid on the motherboard(it's a jumper) and then install a 3ware harware RAID card. And then it's done.
You may not have the luxury of throwing money at it, in which case I would be grateful to find somebody else that has gotten nvraid to work reliably in linux. Good luck.