How to know which version of NFS protocol is used

[Yasuhiro Kimura]

Hello,

When remote file system is mounted with NFS, is there any way to know
which version of NFS protocol (2, 3, 4.0, 4.1, 4.2) is used?

Especially I want to know minor version when NFSv4 is used.

Best Regards.

---
Yasuhiro Kimura

[‪‪Earl Ramirez‬‬]

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[Kevin P. Neal]

Post by Yasuhiro Kimura
Hello,
When remote file system is mounted with NFS, is there any way to know
which version of NFS protocol (2, 3, 4.0, 4.1, 4.2) is used?
Especially I want to know minor version when NFSv4 is used.

Is it in the output of the 'mount' command when run with no options?

[Steve O'Hara-Smith]

On Tue, 11 May 2021 15:25:43 -0400

Post by Kevin P. Neal
Is it in the output of the 'mount' command when run with no options?

Not quite, what you get there is the mount options used. If it says
nfs then you won't know if it got nfsv3 or fell back to nfsv2.