📖 ~1 min read
Table of contents
Symptom & Impact
Root partition reaches 100%, causing service failures and write errors across applications.
Environment & Reproduction
Often follows noisy crash loops or debug-level logging left enabled.
Root Cause Analysis
Persistent journald storage grows without practical size/time limits under sustained log volume.
Quick Triage
Confirm top space consumers before deleting files to avoid losing necessary diagnostics.
Step-by-Step Diagnosis
Inspect journald config and identify high-churn units producing excessive logs.
Solution – Primary Fix
Vacuum old journals and set retention caps to prevent recurrence.
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Solution – Alternative Approaches
Forward logs to centralized platform and keep local retention short on constrained hosts.
Verification & Acceptance Criteria
Disk usage returns to safe threshold and journald no longer exceeds configured cap.
Rollback Plan
Restore prior journald config if logging retention is too aggressive for compliance.
Prevention & Hardening
Alert on root usage trends and service log-rate anomalies.
Related Errors & Cross-Refs
Related to no space left on device, apt failures, and stalled database writes.
Related tutorial: View the step-by-step tutorial for Debian 13.
View all Debian 13 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
systemd-journald configuration and Debian logging guidance.
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