Ubuntu 22.04 disk space fills quickly from logs

📖 ~1 min read

Table of contents

1. Symptom & Impact
2. Environment & Reproduction
3. Root Cause Analysis
4. Quick Triage
5. Step-by-Step Diagnosis
6. Solution – Primary Fix
7. Solution – Alternative Approaches
8. Verification & Acceptance Criteria
9. Rollback Plan
10. Prevention & Hardening
11. Related Errors & Cross-Refs
12. References & Further Reading

Symptom & Impact

On Ubuntu 22.04, root storage can fill due to unchecked logs and cached package files.

Environment & Reproduction

Low disk warnings appear, apt fails, and applications report no space left on device.

Root Cause Analysis

Large journal logs, crash dumps, and stale apt cache are the most common contributors.

Quick Triage

Confirm root partition utilization with df -h and identify top directories consuming space.

Step-by-Step Diagnosis

Run sudo du -xhd1 /var | sort -h, journalctl –disk-usage, and sudo apt clean dry checks.

Solution – Primary Fix

Vacuum old journals, rotate logs, clean apt cache, and remove obsolete packages safely.

Solution – Alternative Approaches

Recheck free space and verify package management and system services operate normally.

Verification & Acceptance Criteria

Set journal size limits and schedule periodic cleanup for logs and package caches.

Rollback Plan

Retain required audit and security logs before aggressive cleanup operations.

Prevention & Hardening

Maintaining free disk space improves update reliability and system responsiveness.

Related Errors & Cross-Refs

Restore archived logs if operational investigations require previous entries.

Related tutorial: View the step-by-step tutorial for Ubuntu 22.04 LTS.

View all Ubuntu 22.04 LTS tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Use man journalctl, man logrotate, and Ubuntu maintenance guides.