This process requires access to the Lakka commandline and is also only recommended for those comfortable working in a Linux shell environment.
Create the mount point folder:
mkdir /storage/roms/nas
Create the mount unit:
nano /storage/.config/system.d/storage-roms-nas.mount
Save and exit: CTRL+O then Enter to save, then CTRL+X to exit
Note: The file name of the mount unit must match the path to the mount point (slashes are replaced with dashes, as in the above example - mount point: /storage/roms/nas -> unit file name: storage-roms-nas.mount)
Add this content, replacing placeholders with your IP, username and password information:
[Unit]
Description=cifs mount script
Requires=network-online.service
After=network-online.service
Before=retroarch.service
[Mount]
What=//192.168.0.31/roms
Where=/storage/roms/nas
Options=username=myusername,password=mypassword,rw
Type=cifs
[Install]
WantedBy=multi-user.target
Note: If the server does not support samba version 2 or higher, you have to add vers=1 to the Options line:
...
Options=username=myusername,password=mypassword,rw,vers=1
...
For CIFS 3.0 the Options have to be adjusted accordingly, i.e. vers=3.0.
Enable and start the service:
systemctl enable storage-roms-nas.mount
systemctl start storage-roms-nas.mount
If the mount was successful, the volume will be mounted automatically from now on at boot.
NFS works exactly the same, except you have to use:
What=192.168.0.31:/roms
Type=nfs