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pvv-nixos-config/hosts/bakke/hardware-configuration.nix
Felix Albrigtsen 0491df32f7 Init bakke (!87)
New backup server just dropped!
This server is awfully slow, and the mdraid setup is awfully slow, and I doubt that this will be a good experience, but we now have a backup server again?

- Tried Disko and nixos-anywhere
- Tried using mdraid
- Found that md is ancient and bad
- Found that disko is 100% extra steps, and a lot more complicated and noisy than just formatting your disks yourself
- Found that systemd-boot doesn't support mdraid
- Found that we probably don't need to mirror the boot partition :)
- Found that old hardware is slow
- Found that old hardware can have poor support for iPXE with UEFI, and might do weird BIOS stuff on you when you least expect it
- Reaffirmed that zfs is love

Current disk layout:
- mdraid for boot/root disk
    - 4TB WD Red with 500MiB ESP with systemd-boot, Remaining mdraid - Old?
    - 4TB WD Red with 500MiB Unused partition, Remaining mdraid - Old?
- zfs pool "tank" for the actual backup data
    - 8TB Toshiba MG08 - New
    - 8TB Exos 7E10 - New

TODO:

- Document the death of Toriel on the wiki
- Document Bakke on the wiki
  - ... describing the poco loco disk layout
- Start backing stuff up
  - Restic? Borg? Rsync?
  - Make backup retention policy and zfs snapshot system
  - Document backup procedures

Reviewed-on: https://git.pvv.ntnu.no/Drift/pvv-nixos-config/pulls/87
Co-authored-by: Felix Albrigtsen <felix@albrigtsen.it>
Co-committed-by: Felix Albrigtsen <felix@albrigtsen.it>
2025-12-22 04:08:30 +01:00

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# Do not modify this file! It was generated by nixos-generate-config
# and may be overwritten by future invocations. Please make changes
# to /etc/nixos/configuration.nix instead.
{ config, lib, pkgs, modulesPath, ... }:
{
imports =
[ (modulesPath + "/installer/scan/not-detected.nix")
];
boot.initrd.availableKernelModules = [ "ehci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" ];
boot.initrd.kernelModules = [ ];
boot.kernelModules = [ "kvm-intel" ];
boot.extraModulePackages = [ ];
fileSystems."/" =
{ device = "/dev/disk/by-uuid/0f63c3d2-fc12-4ed5-a5a5-141bfd67a571";
fsType = "btrfs";
options = [ "subvol=root" ];
};
fileSystems."/home" =
{ device = "/dev/disk/by-uuid/0f63c3d2-fc12-4ed5-a5a5-141bfd67a571";
fsType = "btrfs";
options = [ "subvol=home" ];
};
fileSystems."/nix" =
{ device = "/dev/disk/by-uuid/0f63c3d2-fc12-4ed5-a5a5-141bfd67a571";
fsType = "btrfs";
options = [ "subvol=nix" "noatime" ];
};
fileSystems."/boot" =
{ device = "/dev/sdc2";
fsType = "vfat";
options = [ "fmask=0022" "dmask=0022" ];
};
swapDevices = [ ];
# Enables DHCP on each ethernet and wireless interface. In case of scripted networking
# (the default) this is the recommended approach. When using systemd-networkd it's
# still possible to use this option, but it's recommended to use it in conjunction
# with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
networking.useDHCP = lib.mkDefault false;
# networking.interfaces.eno1.useDHCP = lib.mkDefault true;
# networking.interfaces.enp2s0.useDHCP = lib.mkDefault true;
nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
}