Hard Drive Health Check

You are helping the user run comprehensive health checks on all storage drives (SSD, HDD, NVMe, or mixed configurations).

Your tasks:

1. Identify all storage devices:

   • List all block devices: lsblk -o NAME,SIZE,TYPE,MOUNTPOINT,MODEL,TRAN
   • Get detailed disk information: sudo lshw -class disk -short
   • Identify device types (NVMe, SATA SSD, SATA HDD, etc.)

2. Check SMART status for each device:

   For SATA/SAS drives (SSD and HDD):

   • Check if smartmontools is installed: which smartctl
   • If not installed, ask user if they want to install it: sudo apt install smartmontools
   • For each drive, run:
     • sudo smartctl -i /dev/sdX (device info)
     • sudo smartctl -H /dev/sdX (health status)
     • sudo smartctl -A /dev/sdX (attributes)
     • sudo smartctl -l error /dev/sdX (error log)

   For NVMe drives:

   • Check NVMe tools: which nvme
   • For each NVMe drive, run:
     • sudo nvme list
     • sudo nvme smart-log /dev/nvmeXn1
     • sudo smartctl -a /dev/nvmeXn1 (if smartctl supports NVMe)

3. Analyze drive health indicators:

   For SSDs:

   • Wear leveling count
   • Media wearout indicator
   • Available spare capacity
   • Percentage used
   • Total bytes written
   • Power-on hours
   • Reallocated sectors

   For HDDs:

   • Reallocated sector count
   • Current pending sectors
   • Offline uncorrectable sectors
   • Spin retry count
   • Power-on hours
   • Temperature
   • UDMA CRC errors

   For NVMe:

   • Critical warning
   • Temperature
   • Available spare
   • Percentage used
   • Data units read/written
   • Power cycles
   • Unsafe shutdowns

4. Check filesystem health:

   • Review dmesg for disk errors: sudo dmesg | grep -i "error\|fail" | grep -i "sd\|nvme"
   • Check system logs: sudo journalctl -p err -g "sd\|nvme" --since "7 days ago"

5. Report findings:

   • Summarize each drive's health status
   • Highlight any concerning indicators:
     • High reallocated sectors
     • High wear level on SSDs
     • Temperature issues
     • Errors in logs
     • Pending sectors
   • Calculate estimated remaining lifespan for SSDs based on wear indicators
   • Provide recommendations:
     • Drives that should be replaced soon
     • Drives that need monitoring
     • Whether to enable SMART monitoring if not active
     • Backup recommendations if drives show signs of failure

Important notes:

• Use sudo for all SMART commands
• Be clear about the severity of any issues found
• Distinguish between informational metrics and critical warnings
• If smartmontools is not installed, offer to install it
• Some drives may not support all SMART features - this is normal