1. Goal
Collect disk health status and receive warnings before obvious failure.
2. Files and components involved
/etc/smartd.conf
/etc/rc.d/rc.smartd
/usr/sbin/smartctl3. Operational flow
chmod +x /etc/rc.d/rc.smartd
vi /etc/smartd.conf
/etc/rc.d/rc.smartd start4. Operational verification
smartctl -H /dev/sda
smartctl -a /dev/sda
tail -n 50 /var/log/messages5. Practical notes
Before touching disks, mounts, and filesystems, note the UUIDs, current outputs, and the latest valid backup available.
When you work on storage and filesystems, the rule stays the same: first identify the right device, then modify, and finally verify.
Quick checklist
[ ] Backup or copy of the existing configuration completed
[ ] Files and commands updated as expected
[ ] Local test completed successfully
[ ] Logs or final output verified
[ ] Rollback procedure documented