this post was submitted on 14 Mar 2026
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nfs under QubesOS (lemmy.ca)
submitted 1 week ago by spinning_disk_engineer@lemmy.ca to c/linux@lemmy.world
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I am trying to mount an nfs share from my local network using qubesos. I know that the same configuration works on a different debian machine, but it doesn't work under an app VM, creating the following error:

$ sudo mount -t nfs -o nfsvers=4.2 -o sec=krb5p <nfs share> /mnt/removable/ -vvv
mount.nfs: timeout set for Sat Mar 14 16:35:14 2026
mount.nfs: trying text-based options 'nfsvers=4.2,sec=krb5p,addr=10.206.0.206,clientaddr=10.137.0.9'
mount.nfs: mount(2): Invalid argument
mount.nfs: an incorrect mount option was specified for /mnt/removable

Is this a firewall issue somehow? I don't see how that would happen, since nfs should work over the internet. I have installed nfs-utils to the template, but I'm not completely certain that's actually what's being used.

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[–] spinning_disk_engineer@lemmy.ca 1 points 1 week ago

The server is physically connected to my laptop with only a switch in between. However, my Qubesos config has two routers (one of which is a firewall) between the hardware and what I'm actually working on. I checked with curl, and I have access to ports 2049 and 111, as well as the webui on 443.