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Scenario #318
Storage
Kubernetes v1.23, EBS
Volume Mount Succeeds but Application Can't Write
Volume mounted correctly, but application failed to write due to filesystem mismatch.
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What Happened
App expected xfs but volume formatted as ext4. Some operations silently failed or corrupted.
Diagnosis Steps
- 1Application logs showed invalid argument on file ops.
- 2CSI driver defaulted to ext4.
- 3Verified with df -T.
Root Cause
Application compatibility issue with default filesystem.
Fix/Workaround
• Used storage class parameter to specify xfs.Lessons Learned
Filesystem types matter for certain workloads.
How to Avoid
- 1Align volume formatting with application expectations.