Ubuntu 22.04 LTS – no space left on device due to inode exhaustion – Fix & Prevention

📖 ~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

Writes fail with no space left errors even though df -h shows free storage.

Environment & Reproduction

Common with workloads generating many small files in cache or spool directories.

Root Cause Analysis

Available inodes are exhausted, preventing creation of additional filesystem objects.

Quick Triage

Find mount points at inode limits and identify directories with extreme file counts.

Step-by-Step Diagnosis

Locate top inode-consuming paths and validate whether file churn is expected.

Solution – Primary Fix

Purge unnecessary tiny files and clear stale caches to release inode consumption.

Solution – Alternative Approaches

Move high-churn file paths to filesystems provisioned with higher inode density.

Verification & Acceptance Criteria

Inode utilization returns to safe levels and file creation succeeds.

Rollback Plan

Restore deleted operational artifacts from backup if cleanup removed needed files.

Prevention & Hardening

Track inode consumption metrics and automate cleanup for transient file directories.

Related Errors & Cross-Refs

Frequently misdiagnosed as disk capacity shortage despite adequate free blocks.

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

Filesystem inode planning and operational monitoring for Ubuntu 22.04 workloads.