Samba server on Proxmox : subfolder write error

[tellauri]

Hello,
I'm hosting an Samba server on proxmox and I've an write error on folder creation from ubuntu-server VM

smb.confg

[file]
comment = file
path = /mnt/pve/c2to-data/data/file
browseable = yes
read only = no
writable = yes
guest ok = no
public = yes

fstab from ubuntu-server

//192.168.1.254/file /mnt/file cifs credentials=/root/.credential/user,_netdev,x -systemd.automount,noatime,rw,guest,uid=user,gid=user,dir_mode=0777,file_mode=0777,iocharset=utf8,noperm 0 0

 

[tellauri]

 

[tellauri]

_netdev is requiered it seems

 

[supermicro_server]

is samba 3 or samba 4?