📖 ~1 min read
Table of contents
Symptom & Impact
Applications lose access to NFS data paths due to stale handles.
Environment & Reproduction
Common after backend failover, snapshot rollback, or export remap.
Root Cause Analysis
Client references inode handles that no longer map on server side.
Quick Triage
Confirm export state on server and affected mountpoints on client.
Step-by-Step Diagnosis
Trace mount options and server export identifiers for mismatch.
Solution – Primary Fix
Unmount cleanly, remount exports, and refresh client file handles.
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Solution – Alternative Approaches
Use automount and soft-fail logic for transient backend transitions.
Verification & Acceptance Criteria
I/O operations succeed and stale handle messages cease.
Rollback Plan
Restore previous export mapping or fail back to prior storage node.
Prevention & Hardening
Coordinate failover with client remount orchestration and health checks.
Related Errors & Cross-Refs
Related to lockd state loss and mount option incompatibilities.
Related tutorial: View the step-by-step tutorial for FreeBSD 13.
View all FreeBSD 13 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
FreeBSD NFS client and server operations documentation.
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