# NixOS configuration for NAS server "chopper"

This repository is for development of the NixOS configuration of my NAS server.

## Hardware

This is intended to run on a RockPro64 with two 40TB HDDs as storage and a 64GB
MicroSD card as boot and OS.

## Goals

### Zeroth milestone

- [X] SSH daemon
- [X] User who can act as a local admin

### First milestone

- [X] ZFS set up on the HDDs
- [X] Plex media server

### Second milestone

- [X] Samba for easy file access from Windows
- [ ] NFS for easy file access from Linux

### Third milestone

- [ ] Torrent client web control interface available over LAN
- [ ] Torrent client downloads over VPN

## Non-declarative things

You need to add accounts for the `samba`. It doesn't use the Linux passwords.

```
sudo smbpasswd -a $username
```

## Building

To build the SD image:

```bash
# building the NixOS portions
nix build .#nixosConfigurations.chopper.config.system.build.sdImage
cp result/sd-image/*.zst . # note it will be write-protected
nix-shell -p zstd --run "unzstd *.zst"
sudo dd if=$(echo -n *img) of=/dev/sda status=progress bs=4096
# build uboot
nix-build '<nixpkgs>' --argstr system aarch64-linux -A ubootRockPro64 --out-link ubootRockPro64
sudo dd if=ubootRockPro64/idbloader.img of=/dev/sda conv=fsync,notrunc bs=512 seek=64
sudo dd if=ubootRockPro64/u-boot.itb of=/dev/sda conv=fsync,notrunc bs=512 seek=16384
```

Further instructions can be found on these pages:

[NixOS Wiki/NixOS on ARM/PINE64 RockPro64](https://wiki.nixos.org/wiki/NixOS_on_ARM/PINE64_ROCKPro64)
[NixOS Wiki/NixOS on ARM/Installation](https://wiki.nixos.org/wiki/NixOS_on_ARM/Installation)
[Pine64/RockPro64/Installing Arch Linux ARM](https://pine64.org/documentation/ROCKPro64/Software/Installing_Arch_Linux_ARM/)

## Updating

From `chopper`:

```bash
sudo nixos-rebuild switch --flake .
```

## Notes

### Building boot thing

```bash
nix-build '<nixpkgs/nixos>' -A config.system.build.sdImage -I nixos-config=./sd-image.nix --argstr system aarch64-linux
cp result/sd-image/*.zst .
nix-shell -p zstd --run "unzstd *.zst"
sudo dd if=*.image of=/dev/sda status=progress bs=4096
```