Utility script to wipe disks and report Wearout (Wearout for SSD Only)

wipedisks.sh

#!/usr/bin/env bash

# Built for CloudSouth.com
# This script wipes disk partition tables via wipefs(8) and reports Wearout via smartctl(8).
# Mainly built for SSDs, hence the Wearout reporting.
# Currently Supports Intel, Kingston, and Micron
# If you wish to add support for a disk that isn't listed
# run smartctl -A /dev/disk/sdx, where sdx is the disk you want to add.
# Look for the attribute that is for reporting disk wear, this differs per manufacturer and not every disk reports wear.
# Add that attribute in the egrep command where the "wear" variable is being assiged.

# This script is built with the idea of a general server in service at CloudSouth
# C6220 Gen1 with a LSI 9265-8i running the latest firmware and JBOD enabled
# This script also requires LSI's StorCli package installed and a softlink of the exec in the path
# example; ln -s /bin/storcli /opt/MegaRaid/storcli/storcli64
# It will try to clear any forign configs then force set all disks to UGood, minus the bootdisk, if any.
# Once in JBOD, we can read smart, pull the needed info regarding wear and wipe the disk with wipefs.

shopt -s nullglob;

clear;

echo "Wiping forign configs, if any.";
if ! storcli /call/fall delete > /dev/null; then
  echo "Failed to wipe forign configs.";
  exit 1;
fi

echo "Forcing disks to UGood.";

ubadDisks=$(storcli /c0/e18/sall show j | jq --raw-output '.Controllers[0]."Response Data"."Drive Information"[] | select(.State == "UBad") | ."EID:Slt"' | awk -F ':' '{print $2}');
for badDisk in ${ubadDisks[@]}; do
  if [ ! "${badDisk}" = ' ' ]; then
    echo "Setting bad config diskID 18:${badDisk} to good.";
    if ! storcli /c0/e18/s${badDisk} set good force > /dev/null; then
      echo "Failed to convert disk to UGood";
      exit 1;
    fi;
 fi;
done;
unset ubadDisks;


echo "Converting disks to JBOD.";
ugoodDisks=$(storcli /c0/e18/sall show j | jq --raw-output '.Controllers[0]."Response Data"."Drive Information"[] | select(.State == "UGood") | ."EID:Slt"' | awk -F ':' '{print $2}');
for goodDisk in ${ugoodDisks[@]}; do
 if [ ! "${goodDisk}" = ' ' ]; then
   echo "Setting good config diskID 18:${goodDisk} to JBOD.";
   if ! storcli /c0/e18/s${goodDisk} set jbod > /dev/null; then
     echo "Failed to convert disk to JBOD.";
     exit 1;
  fi;
 fi;
done
unset ugoodDisks;

echo "Waiting for Kernel to refresh SMART data.";
sleep 15;

disks=(/dev/disk/by-id/ata-*);

if [ ${#disks[@]} -eq 0 ]; then
  echo "Couldn't find any disks.";
  echo "Check LEDs!!";
  exit 0;
fi;

if [ ${#disks[@]} -lt 22 ]; then
  echo "Found less disks than 22."
  echo "Got ${#disks[@]} instead of 22.";
  read -p "Contiune? [y/N] " -n 1 -r;
  echo "";
  if [[ "${REPLY}" =~ ^[Yy]$ ]]; then
    echo "Continuing...";
  else
    exit 0;
  fi;
fi;

healthStatus="";

echo "Wiping ${#disks[@]} disks...";
for disk in "${disks[@]}"; do
  # This is to hide the disks with software RAID, since wiping the underlying disk will remove the raid
  if [[ ! "${disk}" == *"-part"* ]]; then
    echo "Wiping disk ${disk##*/}";
    if ! wipefs -af "${disk}" > /dev/null 2>&1; then
      echo "Failed to wipe disk.";
      exit 1;
    fi;
    echo "Gathering Health...";
    healthStatus+="======\n";
    healthStatus+="${disk}\n";
    healthStatus+=$(smartctl -i "${disk}" | egrep '(Device Model|Serial Number|User Capacity)');
    wear=$(smartctl -A "${disk}" | egrep '(Media_Wearout_Indicator|Percent_Lifetime_Remain|SSD_Life_Left)' | awk '{printf "%d%\n", $4}');
    healthStatus+="\nWear: ${wear}\n";
    unset wear;
 fi;
done;

echo "Waiting for the Kernel to re-read the disks.";
# sleep 15;
lsblk;
echo "Wipe Complete.";
echo "Printing Heath of wiped disks.";
sleep 3;
echo -e "${healthStatus}";
echo "";
# sometimes when you freshly convert a disk to JBOD, smartctl doesn't see the attributes yet, seems a rerun would fix it
echo "If there are blank health status for disks, please rerun 'wipedisks'.";