Some Issues

[toad42]

• Testfile is written with O_SYNC, without O_SYNC but with fsync at the end it could be faster.
• If Testfile was not written in Time, diskspd will exit, but running along in the Background.
  This could happen on machines with slow IO.
• g++ complains about "reaches end of control without return in non-void function".

[VirtualTim]

I think the last point is addressed in #12.