138 lines
3.3 KiB
Plaintext
138 lines
3.3 KiB
Plaintext
# build installer
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{
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description = "Bcachefs enabled installation media";
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inputs.nixos.url = "nixpkgs/nixos-unstable";
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outputs = { self, nixos }: {
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nixosConfigurations = {
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exampleIso = nixos.lib.nixosSystem {
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system = "x86_64-linux";
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modules = [
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"${nixos}/nixos/modules/installer/cd-dvd/installation-cd-minimal-new-kernel-no-zfs.nix"
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({ lib, pkgs, ... }: {
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boot.supportedFilesystems = [ "bcachefs" ];
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boot.kernelPackages = lib.mkOverride 0 pkgs.linuxPackages_latest;
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})
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];
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};
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};
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};
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}
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git init
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git add flake.nix
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nix build .#nixosConfigurations.exampleIso.config.system.build.isoImage
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sudo dd if=result/iso/nixos-24.05.20240108.317484b-x86_64-linux.iso of=/dev/sda bs=4M conv=fsync
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#
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# kill old efi boot stuff
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#
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efibootmgr
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efibootmgr -b 0 -B
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...
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#
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# install script below
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#
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# fix unlocking https://nixos.wiki/wiki/Bcachefs
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nix-env -iA nixos.keyutils
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keyctl link @u @s
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# Defining some helper variables (these will be used in later code
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# blocks as well, so make sure to use the same terminal session or
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# redefine them later)
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DISK=/dev/disk/by-id/nvme-CT4000P3PSSD8_2325E6E63746
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HOST=mini
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# ensure 4k sector size
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nvme format --lbaf=1 --force $DISK
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nvme id-ns -H $DISK
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sleep 5
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# kill old data
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sgdisk --zap-all $DISK
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blkdiscard -v $DISK
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wipefs -a $DISK
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gdisk -l $DISK
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# create partitions
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parted $DISK -- mklabel gpt
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sgdisk -n 1:0:+1024M -c 1:"EFI System Partition" -t 1:EF00 $DISK
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sgdisk -n 2:0:+256G -c 2:"nix" -t 2:8e00 $DISK
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sgdisk -n 3:0:0 -c 3:"data" -t 3:8e00 $DISK
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parted $DISK -- set 1 boot on
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sleep 5
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# take a look
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cat /proc/partitions
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# boot partition
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mkfs.fat -F 32 -n EFIBOOT $DISK-part1
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# create encrypted bcachefs
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bcachefs format --block_size=4096 --errors=ro --metadata_checksum=xxhash --data_checksum=xxhash --compression=lz4 --wide_macs --acl --encrypted --fs_label=nix --discard -f $DISK-part2
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bcachefs format --block_size=4096 --errors=ro --metadata_checksum=xxhash --data_checksum=xxhash --compression=lz4 --wide_macs --acl --encrypted --fs_label=data --discard -f $DISK-part3
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# prepare install
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mount -t tmpfs none /mnt
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# Create directories to mount file systems on
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mkdir -p /mnt/{data,nix,home,boot,root,etc/nixos}
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# mount the ESP
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mount $DISK-part1 /mnt/boot
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# mount bcachefs stuff
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mount -o noatime,nodiratime $DISK-part2 /mnt/nix
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mount -o noatime,nodiratime $DISK-part3 /mnt/data
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# bind mount persistent stuff to data
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mkdir -p /mnt/{data/home,data/root,data/nixos/$HOST}
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mount --bind /mnt/data/home /mnt/home
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mount --bind /mnt/data/root /mnt/root
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mount --bind /mnt/data/nixos/$HOST /mnt/etc/nixos
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# take a look
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mount
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# configure
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nixos-generate-config --root /mnt
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# save /mnt/etc/nixos/hardware-configuration.nix /mnt/etc/nixos/configuration.nix
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cp /mnt/etc/nixos/hardware-configuration.nix /tmp
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cp /mnt/etc/nixos/configuration.nix /tmp
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# copy data
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rsync --checksum -vaR --delete /data /mnt
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# install
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nixos-install --no-root-passwd --root /mnt
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# unmount all stuff
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umount -Rl /mnt
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#
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# after install tasks for extra file systems
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#
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# create vms disk
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DD=/dev/disk/by-id/ata-CT2000MX500SSD1_2138E5D5061F
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sgdisk --zap-all $DD
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blkdiscard -v $DD
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wipefs -a $DD
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sleep 5
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# create encrypted bcachefs
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bcachefs format --block_size=4096 --errors=ro --metadata_checksum=xxhash --data_checksum=xxhash --compression=lz4 --wide_macs --acl --encrypted --fs_label=vms --discard -f $DD
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