Disks wipe and tests

look at SMART values

smartctl -a /dev/sda

check the global SMART status

smartctl -H /dev/sda

wipe the disk

dd if=/dev/zero of=/dev/sda bs=128M

check the bandwidth (continuous writes) with iotop (apt get update / apt-get install iotop / iotop)

test the disk with diskscan

diskscan -s random /dev/sda

check the bandwidth (random reads) with iotop

test the disk with internal SMART routine

smartctl -t long /dev/sda

watch test progress with

smartctl -a /dev/sda

fio

Script :

DATEHOUR=$(date "+%Y%m%d-%H%M%S")
DISKNAME="iscsi"
fio \
  --size=10G \
  --sync=0 \
  --fsync=100 \
  --direct=1 \
  --verify=0 \
  --zero_buffers \
  --invalidate=1 \
  --ioengine=libaio \
  --rw=randrw \
  --rwmixread=50 \
  --bssplit=8k/50:16k/50 \
  --numjobs=50 \
  --iodepth=64 \
  --runtime=120 \
  --time_based \
  --group_reporting \
  --gtod_reduce=1 \
  --filename=fio_pool \
  --name "fio_test_${DISKNAME}-${DATEHOUR}"

Shell :

DATEHOUR=$(date "+%Y%m%d-%H%M%S")
DISKNAME="iscsi"
fio --size=10G --sync=0 --fsync=100 --direct=1 --verify=0 --zero_buffers --invalidate=1 --ioengine=libaio --rw=randrw --rwmixread=50 --bssplit=8k/50:16k/50 --numjobs=50 --iodepth=64 --runtime=120 --time_based --group_reporting --gtod_reduce=1 --filename=fio_pool --name "fio_test_${DISKNAME}-${DATEHOUR}"