NFS server

sudo apt update 

sudo apt install nfs-kernel-server -y

#Make dir

sudo mkdir -p /mnt/hdd

#Set permission

sudo chown nobody:nogroup /mnt/hdd

sudo chmod 777 /mnt/hdd

or

sudo chown -R dietpi:dietpi /mnt/hdd

sudo chmod -R 775 /mnt/hdd

#Add entry

sudo nano /etc/exports

/mnt/hdd 192.168.1.1/24(rw,sync,no_subtree_check)

or

/mnt/hdd *(rw,sync,no_subtree_check)

or

/mnt/hdd *(rw,async,no_subtree_check)

or

/mnt/hdd *(rw,fsid=1,no_subtree_check,insecure,no_root_squash)

sudo exportfs -r

sudo systemctl restart nfs-server

sudo exportfs -v

Verify

showmount -e 192.168.1.113

showmount -a 192.168.1.113

showmount -d 192.168.1.113