IBM AIX 7.3 – Common Problem 58 – 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

PowerHA SystemMirror resource group fails over but stays in ERROR state.

Environment & Reproduction

Application controller scripts on AIX 7.3 cluster exit non-zero on takeover.

Root Cause Analysis

Startup script depends on a shared FS or VG not yet imported by cluster.

Quick Triage

Check clRGinfo -v and /var/hacmp/log/hacmp.out for the failed RG.

Step-by-Step Diagnosis

Run clstat -o and lssrc -ls clstrmgrES to inspect cluster state.

Solution – Primary Fix

Fix script return codes and use clRGmove -g -n -u to recover.

Solution – Alternative Approaches

Manually start app on backup node, then bring RG online with –restore.

Verification & Acceptance Criteria

clRGinfo shows RG ONLINE on intended node with stable resources.

Rollback Plan

Move RG back with clRGmove and stop cluster services if needed.

Prevention & Hardening

Test app controllers with clcallev and snap -e before go-live.

Related Errors & Cross-Refs

Volume group varyon failures, IP swap timeout errors.

Related tutorial: View the step-by-step tutorial for aix-7.3.

View all aix-7.3 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

IBM PowerHA SystemMirror admin guide.