IBM AIX 7.2 – Common Problem 116 – Diagnosis and Fix

📖 ~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

sysdumpdev -L reports the last dump was incomplete or failed.

Environment & Reproduction

AIX 7.2 LPAR with dump LV smaller than required by current memory.

Root Cause Analysis

Memory grew via DLPAR but the dump LV was never resized.

Quick Triage

Run sysdumpdev -e to estimate required dump size in bytes.

Step-by-Step Diagnosis

Compare estimate with lslv -l lg_dumplv to see current size.

Solution – Primary Fix

Extend the dump LV: extendlv lg_dumplv N where N covers the estimate.

Solution – Alternative Approaches

Create a new dump LV and point sysdumpdev -P -p /dev/newdump at it.

Verification & Acceptance Criteria

sysdumpdev -e fits inside lg_dumplv and a forced dump completes cleanly.

Rollback Plan

Re-point sysdumpdev back to the previous LV if extension causes issues.

Prevention & Hardening

Re-check after every DLPAR memory change and after upgrades.

Related Errors & Cross-Refs

Pairs with DUMP_INCOMPLETE errpt entries after a crash.

Related tutorial: View the step-by-step tutorial for aix-7.2.

View all aix-7.2 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

IBM Docs: sysdumpdev, lg_dumplv sizing guidance.