🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026
Affected versions: RHEL 10.0 RHEL 10.1

📖 ~1 min read

Table of contents
  1. Problem Summary
  2. Symptoms
  3. Diagnostics
  4. Root Cause
  5. Primary Fix
  6. Verification
  7. Prevention
  8. Rollback
  9. Automation
  10. Command Reference
  11. Escalation
  12. Related Notes

Problem Summary

lvextend cannot grow filesystem due to exhausted volume group space.

Symptoms

Error states insufficient free extents in VG.

Diagnostics

Run vgs, lvs, pvs and check block devices availability.

Root Cause

No additional PV capacity allocated to target VG.

Primary Fix

Add disk, pvcreate, vgextend, then lvextend -r for online growth.

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Illustrative mockup for rhel-10 — rhel10-b02-p37-1
Illustrative mockup — Progressive Robot — Illustrative mockup — Progressive Robot

Verification

Confirm size via lvs and df -h after filesystem resize.

Illustrative mockup for rhel-10 — rhel10-b02-p37-2
Illustrative mockup — Progressive Robot — Illustrative mockup — Progressive Robot

Prevention

Track VG free percent with alerting thresholds.

Rollback

If needed, remove newly added PV after data migration rollback plan.

Automation

Use storage role to standardize LVM provisioning.

Command Reference

pvcreate; vgextend; lvextend -r

Escalation

Provide lsblk and LVM metadata backups when escalating.

XFS supports online growth but not shrink.

Related tutorial: View the step-by-step tutorial for rhel-10.

View all rhel-10 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

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