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Scenario #312
Storage
Kubernetes v1.22, OpenEBS
Volume Resize Not Reflected in Mounted Filesystem
Volume expansion was successful on the PV, but pods didn’t see the increased space.
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What Happened
After increasing PVC size, the PV reflected the new size, but df -h inside the pod still showed the old size.
Diagnosis Steps
- 1Checked PVC and PV: showed expanded size.
- 2Pod logs indicated no disk space.
- 3mount inside pod showed volume was mounted but not resized.
Root Cause
Filesystem resize not triggered automatically.
Fix/Workaround
• Restarted pod to remount the volume and trigger resize.
• Verified resize2fs logs in CSI driver.Lessons Learned
Volume resizing may require pod restarts depending on CSI driver.
How to Avoid
- 1Schedule a rolling restart after volume resize operations.
- 2Check if your CSI driver supports online filesystem resizing.