IBM AIX 7.1 – Common Problem 072 – 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

Upgrading AIX 7.3 to a new TL leaves system in maintenance mode after reboot.

Environment & Reproduction

install_all_updates interrupted by power loss or missing dependent filesets.

Root Cause Analysis

Boot image not rebuilt with bosboot before reboot.

Quick Triage

From SMS or maintenance mode, run lppchk -v and oslevel -s.

Step-by-Step Diagnosis

Use bosboot -ad /dev/ipldevice and bootlist -m normal -o.

Solution – Primary Fix

Re-run install_all_updates -d /lpp_source -B -c -X then bosboot.

Solution – Alternative Approaches

Boot from altinst_rootvg clone made before TL upgrade.

Verification & Acceptance Criteria

oslevel -s reports the target TL and lppchk -v reports OK.

Rollback Plan

Use alt_rootvg_op -X to remove failed clone and revert.

Prevention & Hardening

Always alt_disk_copy and snapshot before TL upgrades.

Related Errors & Cross-Refs

0301-152 bosboot errors, missing kernel modules.

Related tutorial: View the step-by-step tutorial for aix-7.1.

View all aix-7.1 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

AIX Service Update Management Assistant (SUMA) docs.