diskactivitysimulator.lua

local f = io.open(arg[1],"rb")
local devsize = f:seek("end")

local actmode = 1
local actregion1 = 0
local actregion2 = 0

while true do
	if actmode == 1 then
		f:seek("set",math.random(0,devsize/30))
	elseif actmode == 2 then
		if math.random(1,25) == 1 then
			f:seek("set",math.random(0,devsize/30))
		else
			f:seek("set",actregion1+math.random(0,devsize/150))
		end
	elseif actmode == 3 then
		if math.random(1,10) > 4 then
			f:seek("set",actregion1+math.random(0,devsize/30))
		elseif math.random(1,10) > 9 then
			f:seek("set",actregion2+math.random(0,devsize/30))
		else
			f:seek("set",math.random(0,devsize/150))
		end
	end
	if math.random(1,100) == 1 then
		actmode = math.random(1,3)
		actregion1 = math.random(0,devsize*0.94)
		actregion2 = math.random(0,devsize*0.94)
	end
end