#!/bin/sh

# test-smart-long-test-slowdown.sh {/dev/device}
# Tests slowdown of caused by running S.M.A.R.T. Long Self Test.
# (c) 2015 Stanislav Brabec, SUSE Linux
# License: Public Domain

if test -z "$1" ; then
	echo "Usage: $0 {/dev/device}"
	exit 1
fi

echo "Please stop any disc activity to get reasonable results."
echo -n "Then press Return."
read

echo "Aborting possibly running tests..."
smartctl -X "$1" >/dev/null
sleep 3

echo "Testing 1G read of idle disk..."
echo 3 >/proc/sys/vm/drop_caches
dd if="$1" of=/dev/null bs=100M count=10

echo "Initiating long test..."
smartctl -t long "$1" >/dev/null
sleep 10

echo "Testing 1G read of disk running surface scan..."
echo 3 >/proc/sys/vm/drop_caches
dd if="$1" of=/dev/null bs=100M count=10

echo "Aborting running long test..."
smartctl -X "$1" >/dev/null

echo "You can see smart logs by running of \"smartctl -l selftest $1\"."