54 lines
1.5 KiB
Nix
54 lines
1.5 KiB
Nix
{
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config,
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lib,
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pkgs,
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modulesPath,
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...
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}: {
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imports = [
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(modulesPath + "/profiles/qemu-guest.nix")
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];
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boot.initrd.availableKernelModules = ["ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod"];
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boot.initrd.kernelModules = ["dm-snapshot"];
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boot.kernelModules = [];
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boot.extraModulePackages = [];
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# https://elis.nu/blog/2020/05/nixos-tmpfs-as-root/
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fileSystems."/" = {
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device = "none";
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fsType = "tmpfs";
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options = ["defaults" "size=3G" "mode=755"]; # mode=755 so only root can write to those files
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};
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fileSystems."/boot" = {
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device = "/dev/disk/by-label/BOOT";
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fsType = "vfat";
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};
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fileSystems."/nix" = {
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device = "/dev/disk/by-label/nix";
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neededForBoot = true;
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fsType = "ext4";
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};
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swapDevices = [
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{
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device = "/nix/persist/swapfile";
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size = 4 * 1024; # 4 GiB
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}
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];
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# Enable hot-adding memory. Otherwise, the machine will be left with 1GB of
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# memory only.
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# https://pve.proxmox.com/wiki/Hotplug_(qemu_disk,nic,cpu,memory)
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# Nix code inspired by (this isn't hyperv):
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# https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/virtualisation/hyperv-guest.nix
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services.udev.packages = lib.singleton (pkgs.writeTextFile {
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name = "proxmox-memory-hotadd-udev-rules";
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destination = "/etc/udev/rules.d/80-hotplug-mem.rules";
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text = ''
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SUBSYSTEM=="memory", ACTION=="add", TEST=="state", ATTR{state}=="offline", ATTR{state}="online"
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'';
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});
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nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
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}
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