Mount command freezes when mounting NAS, no errors in term r logs

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Hi all,
I cannot longer mount my NAS, because mount command freezes, without reporting errors in the terminal and I don’t see errors in logs.
I can mount my NAS from other nodes (Ubuntu, windows, and another fedora laptop), so the NAS configuration is working.
Something must be happened in my fedora configuration.
If I manually use the mount command, nothing happens, the command stays frozen forever.
I used "showmount -e and I get the shared directories.
FYI, I am using fedora 35, NAS is a QNAP, and this is the output of mount command:

mount.nfs: timeout set for Fri Mar  4 12:11:14 2022
mount.nfs: trying text-based options 'vers=4.2,addr=192.168.178.222,clientaddr=192.168.178.220'

I can see many erros in logs, related to plasma ans rpc, that’s may be the casue, but I dont understand how to refresh the configuration and why this happened!
Any idea?

thx

2
3

I used “mount -o v3 …” after enabling nfs3 on my qnap NAS, and now I can mount. So, the problem seems in the kernel.

Thanks a lot!!!

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These are all similar
https://discussion.fedoraproject.org/t/mount-command-freezes-when-mounting-nas-no-errors-in-term-r-logs/74788/2
https://discussion.fedoraproject.org/t/anyone-having-problems-with-nfsv4-in-f35/71936/5
https://discussion.fedoraproject.org/t/nfs-client-not-work-and-noerror/74886/3

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