Share a host folder to VM: NFS or virtiofs?

[Andre_x]

Hi all,
I've setup a SnapRAID+MergerFS folder in the Proxmox host and I need to access it from a VM.
What's the best way to do it? NFS or virtiofs?

 

[alexskysilk]

I've setup a SnapRAID+MergerFS

not sure what this means. is it a normal file system location on the host?

What's the best way to do it? NFS or virtiofs?

virtiofs bypasses the network, but either way will work. in practice, avoid virtiofs if in a clustered environment.

 

[Andre_x]

not sure what this means. is it a normal file system location on the host?

Yes, just a location (/mnt/pool)

virtiofs bypasses the network, but either way will work. in practice, avoid virtiofs if in a clustered environment.

Thanks!

 

[Andre_x]

I'm going crazy with NFS!
I've created the share like this/mnt/pool/var_VM_docker/ 172.31.0.0/24(rw,sync,no_subtree_check) (/etc/exports)
but in Proxmox when I try to add a NFS drive I get:
create storage failed: mount error: mount.nfs: access denied by server while mounting 172.31.0.1:/mnt/pool/var_VM_docker (500)

If I try to mount it in CLI with: sudo mount -t nfs -o nfsvers=3 -vvvv 172.31.0.1:/mnt/pool/var_VM_docker /mnt/test
I get:

mount.nfs: timeout set for Mon Apr 15 19:07:11 2024
mount.nfs: trying text-based options 'nfsvers=3,addr=172.31.0.1'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 172.31.0.1 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 172.31.0.1 prog 100005 vers 3 prot UDP port 41067
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting 172.31.0.1:/mnt/pool/var_VM_docker

172.31.0.1 is a bridge I've created in Proxmox just for this share. I've tried it with 127.0.0.1 (both in the export and in the mount, but I get the same error).
I can telnet to port 2049 on that IP.

What the heck am I doing wrong?