📖 ~1 min read
Table of contents
Symptom & Impact
Database service remains down and dependent applications fail.
Environment & Reproduction
Ubuntu 16.04 with abrupt shutdown or storage inconsistency.
Root Cause Analysis
InnoDB tablespace metadata corruption prevents normal startup.
Quick Triage
Capture MySQL error log tail and verify disk integrity.
Step-by-Step Diagnosis
Validate datadir permissions and inspect InnoDB diagnostics.

Solution – Primary Fix
Apply controlled recovery mode and repair or restore data.
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Solution – Alternative Approaches
Restore from backup replica and re-seed affected datasets.
Verification & Acceptance Criteria
MySQL starts, passes health checks, and serves queries.
Rollback Plan
Return to previous datadir snapshot and configuration.
Prevention & Hardening
Implement backup validation and clean shutdown safeguards.
Related Errors & Cross-Refs
Cross-reference filesystem corruption and OOM termination events.
Related tutorial: View the step-by-step tutorial for Ubuntu 16.04 LTS.
View all Ubuntu 16.04 LTS tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
MySQL InnoDB recovery guides and Ubuntu package documentation.
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