Cheat sheet

Drives

Wipe Drive

dd if=/dev/urandom of=/dev/sdX bs=1M status=progress

Format Drive

Format Drive

sudo sg_format --format --ffmt=1 --size=512 /dev/sdX

Check Progress

sudo sg_requests /dev/sdX

Drive Testing

Short SMART Test

sudo smartctl -t short /dev/sdX

Long SMART Test

sudo smartctl -t long /dev/sdX

Check SMART Results

sudo smartctl -a /dev/sdX

BadBlock Stress Test

This is a destructive test and will destroy all data on the disk

badblocks -b 4096 -c 65535 -wsv /dev/sdX > /mnt/tank/badblocks-$(basename /dev/sdX).log

ZFS Scrub Test

zpool scrub TESTR001

Check ZFS Scrub Test Results

zpool status TESTR001

Drive Information

Display name, model, serial, physical and logical sector sizes

lsblk -o NAME,MODEL,SERIAL,SIZE,PHY-SEC,LOG-SEC -b | sort -k4 -n

SMART attributes

smartctl -a /dev/sdX

Identify drive model

udevadm info --query=all --name=/dev/sdX | grep ID_MODEL

Identify physical drive location

dd if=/dev/da1 of=/dev/null bs=1048576

Datasets

Dataset Usage

zfs list -o space Pool/Dataset

Pools

Pool Usage

zfs list -o space Pool