miku bcachefs
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3 changed files with 37 additions and 75 deletions
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@ -1,7 +1,3 @@
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# Edit this configuration file to define what should be installed on
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# your system. Help is available in the configuration.nix(5) man page
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# and in the NixOS manual (accessible by running `nixos-help`).
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{ config, pkgs, ... }:
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{
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@ -14,9 +10,8 @@
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/data/nixos/share/common.nix
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];
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# our hostname and an ID for ZFS
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# our hostname
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networking.hostName = "miku";
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networking.hostId = "c132caed";
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# EurKey layout
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services.xserver.xkb.layout = "eu";
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@ -1,6 +1,3 @@
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# Do not modify this file! It was generated by ‘nixos-generate-config’
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# and may be overwritten by future invocations. Please make changes
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# to /etc/nixos/configuration.nix instead.
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{ config, lib, pkgs, modulesPath, ... }:
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{
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@ -21,7 +18,14 @@
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fileSystems."/boot" = {
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device = "/dev/disk/by-id/nvme-KINGSTON_SFYRD4000G_50026B7686EC5F33-part1";
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fsType = "vfat";
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neededForBoot = true;
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options = [ "fmask=0022" "dmask=0022" ];
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};
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# /nix volume with the system & all persistent data
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fileSystems."/nix" = {
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device = "/dev/disk/by-id/nvme-KINGSTON_SFYRD4000G_50026B7686EC5F33-part2:/dev/disk/by-id/nvme-KINGSTON_SFYRD4000G_50026B7686EC6164-part2";
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fsType = "bcachefs";
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neededForBoot = true;
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};
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}
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@ -28,6 +28,7 @@ HOST=miku
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# disks to use
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DISK=/dev/disk/by-id/nvme-KINGSTON_SFYRD4000G_50026B7686EC5F33
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DISK2=/dev/disk/by-id/nvme-KINGSTON_SFYRD4000G_50026B7686EC6164
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DISKS="$DISK $DISK2"
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# ensure 4k sector size
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nvme format --lbaf=1 --force $DISK
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@ -40,76 +41,43 @@ nvme id-ns -H $DISK2
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sleep 5
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# create partition table on all disks and EFI partition
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for D in $DISK $DISK2; do
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RAID=""
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for D in $DISKS; do
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# kill old data
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sgdisk --zap-all $D
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blkdiscard -v $D
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blkdiscard -v -f $D
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wipefs -a $D
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sleep 5
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# create partitions
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# Create partition table
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parted $D -- mklabel gpt
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sgdisk -n 1:0:+1024M -c 1:"EFI System Partition" -t 1:EF00 $D
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sgdisk -n 2:0:0 -c 2:"Linux" -t 2:8e00 $D
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# Create a /boot as $D-part1
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parted $D -- mkpart ESP fat32 1MiB 1024MiB
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parted $D -- set 1 boot on
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sleep 5
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# Create a /nix as $D-part2
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parted $D -- mkpart NIX 1024MiB 100%
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# boot partition
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mkfs.fat -F 32 -n EFIBOOT $D-part1
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# boot partition after short sleep, needed on some machines
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sleep 5
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mkfs.vfat $D-part1
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# add part2 to raid
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RAID="$RAID $D-part2"
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done
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# take a look at the partitions
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lsblk
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# ZFS zpool creation with compression and encryption
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zpool create \
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-o ashift=13 \
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-o autotrim=off \
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-O acltype=posixacl \
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-O atime=off \
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-O canmount=off \
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-O compression=on \
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-O dnodesize=auto \
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-O utf8only=on \
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-O normalization=formD \
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-O xattr=sa \
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-O mountpoint=none \
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-O encryption=on \
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-O keylocation=prompt \
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-O keyformat=passphrase \
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zpool $DISK-part2 $DISK2-part2
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# create encrypted bcachefs
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bcachefs format --encrypt -f $RAID
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nix-env -iA nixos.keyutils
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keyctl link @u @s
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bcachefs unlock $DISK-part2
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sleep 5
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# take a look at the partitions
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lsblk
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# show the pool
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zpool status
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sleep 5
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# create all the volumes
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zfs create -o mountpoint=legacy zpool/data
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zfs create -o mountpoint=legacy zpool/nix
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zfs create -o mountpoint=legacy zpool/root
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sleep 5
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# show the pool
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zpool status
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sleep 5
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# create ZFS snapshot that we'll rollback to on boot
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# see https://ryanseipp.com/post/nixos-encrypted-root/
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zfs snapshot zpool/root@blank
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sleep 5
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# prepare install, root
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mount -t zfs zpool/root /mnt
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# prepare install, tmpfs root
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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,boot,root,etc/nixos}
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@ -117,9 +85,12 @@ mkdir -p /mnt/{data,nix,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 volumes
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mount -t zfs zpool/data /mnt/data
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mount -t zfs zpool/nix /mnt/nix
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# mount the /nix
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mount -t bcachefs $DISK-part2 /mnt/nix
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# mount the /data via bind mount
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mkdir /mnt/nix/data
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mount --bind /mnt/nix/data /mnt/data
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# bind mount persistent stuff to data
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mkdir -p /mnt/data/{root,nixos/$HOST}
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@ -136,26 +107,18 @@ mount
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# configure
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nixos-generate-config --root /mnt
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# check /mnt/etc/nixos/hardware-configuration.nix /mnt/etc/nixos/configuration.nix
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# copy config data from another machine including secrets
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doas scp -r /data/nixos root@192.168.13.115:/mnt/data
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# install
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nixos-install --option experimental-features 'nix-command flakes' --no-root-passwd --root /mnt
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# unmount all stuff and sync
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umount -Rl /data /mnt
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zpool export -a
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sync
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# shutdown once
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shutdown now
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# sync all /data after the install
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doas rsync -va --delete --one-file-system /data/ root@192.168.13.115:/data/
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