📖 ~1 min read
Table of contents
Symptom & Impact
Boot delays or hangs occur when remote NFS shares are unavailable during startup.
Environment & Reproduction
RHEL 7 with static /etc/fstab NFS entries and intermittent network or server availability.
Root Cause Analysis
Hard mount options and missing _netdev/noauto settings force blocking behavior in boot path.
Quick Triage
Boot in rescue mode, review failed units with systemctl –failed, and inspect fstab entries.
Step-by-Step Diagnosis
Run journalctl -b for remote-fs.target timing and test manual mount -v to isolate server/path issues.
Solution – Primary Fix
Add _netdev,x-systemd.automount,timeo,retrans options and restart remote-fs related units.
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Solution – Alternative Approaches
Use autofs for on-demand mounts to avoid boot-critical dependency on NFS availability.
Verification & Acceptance Criteria
Reboot completes normally and NFS mounts appear on first access without long boot stall.
Rollback Plan
Restore previous fstab and disable automount unit if application compatibility issues arise.
Prevention & Hardening
Classify remote mounts as non-blocking and monitor NFS server latency and uptime.
Related Errors & Cross-Refs
A start job is running for /mnt/share, mount.nfs: Connection timed out.
Related tutorial: View the step-by-step tutorial for rhel-7.
View all rhel-7 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
nfs and fstab man pages, systemd mount options, RHEL storage administration guide.
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