IBM AIX 7.2 – Common Problem 241 – 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

enq -A shows queue DOWN and print jobs accumulate in /var/spool/lpd/qdir.

Environment & Reproduction

Hit after printer offline, network issue to the print server, or qdaemon crash.

Root Cause Analysis

qdaemon cannot dispatch jobs because the device backend is failing or queue is locked.

Quick Triage

Run enq -A and lssrc -s qdaemon to see queue state and qdaemon health.

Step-by-Step Diagnosis

Inspect /var/adm/ras/qdaemon log and tail /var/spool/lpd/stat for failures.

Solution – Primary Fix

Bring the queue back with enable queueN after fixing connectivity to the device.

Solution – Alternative Approaches

If qdaemon is stuck, stopsrc -cs qdaemon then startsrc -s qdaemon and re-enable queues.

Verification & Acceptance Criteria

enq -A shows READY for the queue and a test print completes within seconds.

Rollback Plan

Hold jobs with enq -P queueN -h and reroute via smit lpd to another printer.

Prevention & Hardening

Monitor queues with enq -A in cron and alarm when state != READY.

Related Errors & Cross-Refs

Related to /var full conditions, NFS-backed spool dirs, and SMB printer shares.

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 AIX 7.2 printing subsystem and qdaemon documentation.