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Table of contents
Symptom & Impact
After dnf upgrade MariaDB fails to start, with InnoDB or system table compatibility errors in the log.
Environment & Reproduction
Common when major version jumps occur without running mariadb-upgrade or with stale ibdata files.
Root Cause Analysis
On-disk system tables or InnoDB redo log version do not match the new mariadb-server binary.
Quick Triage
Inspect journalctl -u mariadb and /var/log/mariadb/mariadb.log for InnoDB recovery messages.
Step-by-Step Diagnosis
Run: sudo systemctl status mariadb; sudo journalctl -u mariadb -e; ls -l /var/lib/mysql.

Solution – Primary Fix
Run: sudo systemctl start mariadb –no-block; sudo mariadb-upgrade –force; sudo systemctl restart mariadb.
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Solution – Alternative Approaches
Roll forward via mariabackup or dump/import into a clean instance if mariadb-upgrade cannot proceed.
Verification & Acceptance Criteria
mariadb starts cleanly, mariadb-check returns OK, and applications reconnect without errors.
Rollback Plan
Restore /var/lib/mysql from backup and reinstall previous mariadb-server package if upgrade is unsafe.
Prevention & Hardening
Snapshot databases before upgrades and validate mariadb-upgrade output in pre-prod first.
Related Errors & Cross-Refs
Related to slow query log corruption, time zone tables missing, and SELinux context drift.
Related tutorial: View the step-by-step tutorial for centos-stream-10.
View all centos-stream-10 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
MariaDB documentation and Red Hat database migration notes.
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