mount fails on recent Ubuntu versions (Ubuntu 21.04)

[pbowyer]

I've used vagrant-winnfsd for years and it's brilliant. Thank you 😍

It works perfectly with my Ubuntu 18.04 guests. Today I tried setting up an Ubuntu 21.04 machine. No matter what mount_options I set or omitted, it failed with:

The following SSH command responded with a non-zero exit status.
Vagrant assumes that this means the command failed!

mount -o vers=3,udp,vers=3 192.168.33.1:/D/projects/example /vagrant

Stdout from the command:



Stderr from the command:

mount.nfs: an incorrect mount option was specified

The config line I started with was:

  config.vm.synced_folder ".", "/vagrant", type: "nfs", mount_options: %w{rw,async,fsc,nolock,vers=3,udp,rsize=32768,wsize=32768,hard,noatime,actimeo=2}

When I reverted to Ubuntu 18.04 it worked.

[rmruano]

I've managed to solve it by switching to TCP protocol proto=tcp
Anyway, the use of UDP is discouraged: https://manpages.ubuntu.com/manpages/bionic/man5/nfs.5.html#transport%20methods

[dokuhebi]

I realize it's a year and half later, but I'm getting the same error. I'm not sure how the solution provided by @rmruano is relevant to the plugin.

[sawwd]

I have the same issue on Ubuntu 22.04. Any working solution?