The new parameter allows users to test drives with
forced block sizes.
This parameter is only meant to help testing drives whose
*real* sizes are not multiples of their block sizes;
this should be rather rare!
The code of the old manual reset couldn't handle the case of
the drive changing its filename, i.e. "/dev/sdb" becomes
"/dev/sdc" after the drive is unplugged and plugged back.
Not only this is a bug, in the rare case the user is
testing multiple drives at the same time, this would lead
to bad behavior.
f3brew, f3 block read write, tests block devices
writing and reading blocks directly to devices.
This is a not-functional version of f3brew.
The main contribution of this patch is to reorganize libprobe.{h,c},
so f3brew, and any future application, can reuse the library.
