#!/bin/sh

# run once a nice through cron

# smartctl differences
for i in 0 1 2 3 4 5 6 7; do
        # we strip the numbers from the error log to reduce diff noise when
        # the log grows.
        /usr/sbin/smartctl -a -d 3ware,$i /dev/twa0 \
                | perl -pe 's/^Num  Test/Test/; s/^#[ \d]{2}  (.*\d%\s+\d+)/$1/' > twa0.$i.new
        diff -u0 \
                -I '^Local Time is:' \
                -I '^  9 Power_On_Minutes' \
                -I '^  9 Power_On_Hours' \
                -I '^  8 Seek_Time_Performance' \
                -I '^195 Hardware_ECC_Recovered' \
                -I '^201 Soft_Read_Error_Rate' \
                twa0.$i.old twa0.$i.new
        mv twa0.$i.new twa0.$i.old
done