Ubuntu 18.04 LTS – Docker daemon fails to start after storage driver conflict – 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

Container workloads remain down because Docker daemon cannot initialize runtime state.

Environment & Reproduction

Typically appears after filesystem changes, engine upgrades, or manual daemon.json edits.

Root Cause Analysis

Configured storage driver is incompatible with backing filesystem or existing image data.

Quick Triage

Capture daemon logs and validate current driver setting before repeated restart attempts.

Step-by-Step Diagnosis

Inspect docker info prerequisites, filesystem type, and data-root metadata for conflict evidence.

Solution – Primary Fix

Set supported storage driver, migrate data-root if needed, and restart daemon cleanly.

Solution – Alternative Approaches

Move to containerd-based runtime path while rebuilding Docker node baseline.

Verification & Acceptance Criteria

Docker daemon reaches active state and critical containers start without storage errors.

Rollback Plan

Restore previous daemon config and data-root snapshot if migration fails.

Prevention & Hardening

Standardize storage driver policy and validate host filesystem compatibility pre-deployment.

Related Errors & Cross-Refs

Can overlap with cgroup mismatch and low-disk failures under image pull load.

Related tutorial: View the step-by-step tutorial for Ubuntu 18.04 LTS.

View all Ubuntu 18.04 LTS tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Docker storage driver documentation and Ubuntu container host best practices.