Tag: badblocks

This is another useful script, which do a complete erase and test disk in linux.
The first, we must have a tools “smartmontools”. We install it:

yum install smartmontools

Maybe, we nee som usefull software:

yum install epel-release.noarch
yum install htop dstat lm_sensors.x86_64 hddtemp

#!/bin/bash
#path of disk
test = /dev/sda
#find a serial number of disk
disk = `smartctl -a /dev/sda | grep Serial | awk '{print $3}'`
log = /home/vasil/$disk.log
#next, we destroy any of the partition table (mbr or gpt)
sgdisk --zap-all $test > $log
sleep 5
#notice a temperature of disk to log
hddtemp $test >> $log
#now we write zeros to every block of disk - secure erase contents
dd if=/dev/zero of=$test bs=4M
#notice a temperature of disk
hddtemp $test >> $log
sleep 5
#begin an internal self test - short
smartctl --test=short $test
sleep 150
#begin a long smart self test
hddtemp $test >> $log
smartctl --test=long $test
sleep 300
hddtemp $test >> $log
#print the output of tests
smartctl -l selftest $test >> $log
sleep 5
#start check of disk for bad-blocks a log bad blocks to log
`badblocks -v /dev/sda > /home/vasil/sda.txt` >> $log
sleep 5
hddtemp $test >> $log
smartctl --test=long $test
exit 0

This is fully automatized. We can start this script with modification of variable $test for more disks. And next day, we can examine logs. For bad blocks, for smart self-test and other.