Report health status for all disks with SMART

report-disk-health.sh

#!/bin/bash

# This script reports the most common CPU flags to pay attention.
# Usage:
# curl https://gist.githubusercontent.com/mrjk/8a74b4597716bebea2a0b965c06b54ff/raw/26cd0e43d1694bf40cb5f2935ff88f36a0f77a81/report-disk-health.sh | bash


report_smart() {
  
  command -v smartctl >/dev/null || {
    echo "ERROR: Missing smartctl command, try to install smartctl or smartmontools"
    return 1
  }

  local GREEN='\033[0;32m'
  local YELLOW='\033[1;33m'
  local RED='\033[0;31m'
  local NC='\033[0m'

  echo "=== SMART Disk Health Check ==="
  for disk in $(lsblk -d -n -o NAME | grep -E "^sd|^hd|^nvme"); do
    dev="/dev/$disk"

    # Get the real indicators of disk failure
    raw=$(sudo smartctl -A $dev 2>/dev/null)

    reallocated=$(echo "$raw" | grep -i "Reallocated_Sector_Ct" | awk '{print $10}')
    pending=$(echo "$raw"     | grep -i "Current_Pending_Sector" | awk '{print $10}')
    uncorr=$(echo "$raw"      | grep -i "Offline_Uncorrectable"  | awk '{print $10}')

    # Default to 0 if not found
    reallocated=${reallocated:-0}
    pending=${pending:-0}
    uncorr=${uncorr:-0}

    if [ "$reallocated" -gt 0 ] || [ "$pending" -gt 0 ] || [ "$uncorr" -gt 0 ]; then
      echo -e "${RED}[FAILING]${NC} $dev — reallocated=$reallocated pending=$pending uncorrectable=$uncorr"
    else
      echo -e "${GREEN}[OK]     ${NC} $dev — reallocated=$reallocated pending=$pending uncorrectable=$uncorr"
    fi
  done
}

report_smart