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nfs mount: RPC: Timed Out - But Can "ping" the NFS Server (Doc ID 1948710.1)

Last updated on JUNE 20, 2023

Applies to:

Solaris Operating System - Version 10 to 11.4 [Release 10.0 to 11.0]
Information in this document applies to any platform.

Symptoms

When NFS client tries to mount a share it fails with error:

# mount -F nfs NFS-server:/opt/xxxx /mnt
nfs mount: NFS-server: RPC: Timed out
nfs mount: retrying: /mnt
^C

Meanwhile these messages are seen on the NFS-server:

...  nfssrv: [ID 694464 kern.warning] WARNING: nfsauth upcall failed: RPC: Operation in progress
...  nfssrv: [ID 252574 kern.warning] WARNING: nfsauth upcall failed: RPC: Unable to send; errno = 132
...  nfssrv: [ID 949115 kern.warning] WARNING: nfsauth: mountd not responding
...

Cause

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