On 08/14/2012 10:47 AM, Troels Haugboelle wrote:
and after that we have to powercycle it. Tried intially with version 
5.41. Same result. Can I somehow enable debug to get more info ? Have 
anybody run in to the same trouble ?
  1. I am using a lot of LSI raids and never had a hard hang. In the worst case it was array problems. 
  2. Make sure that RAID Firmware is up to date.
  3. I am recommending to test latest version of smartmontools + vanilla kernel. 

If one of this recommendation will help then problem is not in smartmontools. If not - please send us logs with -r ioctl to see where it hangs.