π ~1 min read
Table of contents
Symptom & Impact
Remote shares are unavailable and dependent services fail startup.
Environment & Reproduction
Ubuntu 16.04 with CIFS entries in fstab and network delay.
Root Cause Analysis
Mount attempt occurs before network and auth prerequisites are ready.
Quick Triage
Test manual mount and validate credentials and hostname resolution.
Step-by-Step Diagnosis
Review fstab options, systemd ordering, and kernel CIFS logs.
Solution – Primary Fix
Add _netdev and automount options with correct SMB dialect.
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Solution – Alternative Approaches
Use autofs for on-demand mounting with retry behavior.
Verification & Acceptance Criteria
Share mounts automatically and remains accessible after reboot.
Rollback Plan
Restore previous fstab entries and mount scripts.
Prevention & Hardening
Monitor mount health and credentials expiry proactively.
Related Errors & Cross-Refs
Compare with NFS mount timing and DNS resolution problems.
Related tutorial: View the step-by-step tutorial for Ubuntu 16.04 LTS.
View all Ubuntu 16.04 LTS tutorials on the Tutorials Hub β
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
CIFS mount options and Ubuntu systemd mount documentation.
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