System hangs in shutting down with "systemd-shutdown[1]: Unmounting file systems."
Issue
- System hungs in shutting down with the following messages.
crash> log | tail
[34741460.989696] nfs: server nas01 not responding, still trying
[34741460.989698] nfs: server nas01 not responding, still trying
[34741460.989701] nfs: server nas01 not responding, still trying
[34741460.989703] nfs: server nas01 not responding, still trying
[34741460.989705] nfs: server nas01 not responding, still trying
[34741460.989711] nfs: server nas01 not responding, still trying
[34742991.190676] systemd-shutdown[1]: Sending SIGTERM to remaining processes...
[34742991.207867] systemd-journald[553]: Received SIGTERM from PID 1 (systemd-shutdow).
[34742991.218579] systemd-shutdown[1]: Sending SIGKILL to remaining processes...
[34742991.221800] systemd-shutdown[1]: Unmounting file systems.
Environment
- Red Hat Enterprise Linux 7 (probably 7.4 or above)
- NFS client (NFSv4.1)
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