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Scenario #377
Storage
Kubernetes v1.24, Azure Disk CSI
CSI Volume Cleanup Delay Leaves Orphaned Devices
Volume deletion left orphaned devices on the node, consuming disk space.
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What Happened
Node failed to clean up mount paths after volume detach due to a kubelet bug.
Diagnosis Steps
- 1Found stale device mounts in /var/lib/kubelet/plugins/kubernetes.io/csi.
Root Cause
Kubelet failed to unmount due to corrupted symlink.
Fix/Workaround
• Manually removed symlinks and restarted kubelet.Lessons Learned
CSI volume cleanup isn’t always reliable.
How to Avoid
- 1Monitor stale mounts.
- 2Automate cleanup scripts in node maintenance routines.