IBM AIX 7.2 – Common Problem 010 – 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

Print jobs accumulate in the queue and qchk shows DOWN status.

Environment & Reproduction

IBM AIX 7.2 LPAR exhibiting printer queue stuck (qdaemon) issues under standard PowerVM workloads.

qchk -A
lssrc -s qdaemon

Root Cause Analysis

Backend lpd/piobe process hung leaves the queue in DOWN state.

Quick Triage

Confirm scope with errpt, recent changes, and subsystem state via lssrc.

errpt -d S | head
lssrc -s qdaemon

Step-by-Step Diagnosis

Trace failing piobe and inspect /var/spool/lpd messages.

qchk -q queue1
ps -ef | grep piobe

Solution – Primary Fix

Restart qdaemon and re-enable the queue.

stopsrc -s qdaemon
startsrc -s qdaemon
enq -U -P queue1

Solution – Alternative Approaches

Recreate the virtual printer via smit mkpq when piobe persists in failing.

Verification & Acceptance Criteria

Confirm subsystem returns to RUNNING state and errpt shows no new entries.

qchk -q queue1
lssrc -s qdaemon

Rollback Plan

Restore prior configuration from mksysb or alt_disk_install clone if the fix regresses.

rmqueue -q queue1  # only after job re-routed

Prevention & Hardening

Encode the fix in NIM customisation scripts and monitor via topas/nmon.

smit chque  # set acctfile and bsh limits

Related Errors & Cross-Refs

piobe core dumps; /var/spool full

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

AIX Printers and Printing Guide