back to btrfs

This commit is contained in:
Christoph Cullmann 2024-03-25 19:22:35 +01:00
parent dd36203b34
commit f6503be173
2 changed files with 62 additions and 17 deletions

View file

@ -457,8 +457,8 @@ in
# init password
hashedPassword = builtins.readFile "/data/nixos/password.secret";
# use same keys as my main user
openssh.authorizedKeys.keys = pkgs.lib.splitString "\n" (builtins.readFile "/home/cullmann/.ssh/authorized_keys");
# use fixed auth keys
openssh.authorizedKeys.keys = pkgs.lib.splitString "\n" (builtins.readFile "/data/nixos/authorized_keys.secret");
};
home-manager.users.root = {
@ -488,6 +488,9 @@ in
# init password
hashedPassword = builtins.readFile "/data/nixos/password.secret";
# use fixed auth keys
openssh.authorizedKeys.keys = pkgs.lib.splitString "\n" (builtins.readFile "/data/nixos/authorized_keys.secret");
};
home-manager.users.cullmann = {

View file

@ -21,6 +21,13 @@ nix --extra-experimental-features flakes --extra-experimental-features nix-comma
sudo dd if=result/iso/nixos-24.05.20240108.317484b-x86_64-linux.iso of=/dev/sda bs=4M conv=fsync
#
# enable ssh for root
#
sudo bash
passwd
#
# kill old efi boot stuff
#
@ -37,10 +44,6 @@ efibootmgr
# install script below
#
# fix unlocking https://nixos.wiki/wiki/Bcachefs
nix-env -iA nixos.keyutils
keyctl link @u @s
# Defining some helper variables (these will be used in later code
# blocks as well, so make sure to use the same terminal session or
# redefine them later)
@ -62,8 +65,7 @@ gdisk -l $DISK
# create partitions
parted $DISK -- mklabel gpt
sgdisk -n 1:0:+1024M -c 1:"EFI System Partition" -t 1:EF00 $DISK
sgdisk -n 2:0:+256G -c 2:"nix" -t 2:8e00 $DISK
sgdisk -n 3:0:0 -c 3:"data" -t 3:8e00 $DISK
sgdisk -n 2:0:0 -c 2:"Linux" -t 2:8e00 $DISK
parted $DISK -- set 1 boot on
sleep 5
@ -74,12 +76,37 @@ cat /proc/partitions
# boot partition
mkfs.fat -F 32 -n EFIBOOT $DISK-part1
# create encrypted bcachefs
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
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
# create the crypto containers
cryptsetup luksFormat --sector-size 4096 --batch-mode --verify-passphrase $DISK-part2
sleep 5
# open them, set right options persistently
cryptsetup luksOpen --allow-discards --perf-no_read_workqueue --perf-no_write_workqueue --persistent $DISK-part2 crypt-system
sleep 5
lsblk --fs
# create btrfs with fast & strong checksumming and fast mounting
mkfs.btrfs -f --csum xxhash --features block-group-tree /dev/mapper/crypt-system
sleep 5
btrfs filesystem show
# create all the volumes
mount /dev/mapper/crypt-system /mnt
btrfs subvolume create /mnt/data
btrfs subvolume create /mnt/nix
btrfs subvolume create /mnt/root
sleep 5
btrfs subvolume list /mnt
# umount again, we will only use explicit subvolumes
umount /mnt
# prepare install
mount -t tmpfs none /mnt
mount -o subvol=root,noatime,nodiratime /dev/mapper/crypt-system /mnt
# Create directories to mount file systems on
mkdir -p /mnt/{data,nix,home,boot,root,etc/nixos}
@ -87,9 +114,9 @@ mkdir -p /mnt/{data,nix,home,boot,root,etc/nixos}
# mount the ESP
mount $DISK-part1 /mnt/boot
# mount bcachefs stuff
mount -o noatime,nodiratime $DISK-part2 /mnt/nix
mount -o noatime,nodiratime $DISK-part3 /mnt/data
# mount volumes
mount -o subvol=data,noatime,nodiratime /dev/mapper/crypt-system /mnt/data
mount -o subvol=nix,noatime,nodiratime /dev/mapper/crypt-system /mnt/nix
# bind mount persistent stuff to data
mkdir -p /mnt/{data/home,data/root,data/nixos/$HOST}
@ -121,6 +148,7 @@ nixos-install --no-root-passwd --root /mnt
# unmount all stuff
umount -Rl /mnt
cryptsetup luksClose crypt-system
# sync all /data after the install
@ -139,5 +167,19 @@ wipefs -a $DD
sleep 5
# create encrypted bcachefs
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
# create the crypto containers
cryptsetup luksFormat --batch-mode --verify-passphrase $DD
sleep 5
# open them, set right options persistently
cryptsetup luksOpen --allow-discards --perf-no_read_workqueue --perf-no_write_workqueue --persistent $DD crypt-vms
sleep 5
lsblk --fs
# create btrfs with fast & strong checksumming and fast mounting
mkfs.btrfs -f --csum xxhash --features block-group-tree /dev/mapper/crypt-vms
sleep 5
btrfs filesystem show