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====== clerie's Gentoo install Guide ======

===== Konzept =====
  * Vollverschlüsselte Festplatte
  * (U)EFI Boot direkt in den Kernel
  * Hibernate

===== Links =====
  * https://wiki.gentoo.org/wiki/Full_Disk_Encryption_From_Scratch_Simplified
===== Partitionierung =====

| /boot/efi  |        | 512MB     |   | mkfs.fat -F 32  |
| /boot | | 1G | | mkfs.ext4 |
| lvm    | /      | 25GB      |   |                 |
| :::    | swap   | RAM+2GB   |   |                 |
| :::    | /home  | 100%FREE  |   |                 |

===== Krypto =====

cryptsetup luksFormat -c aes-xts-plain64 --hash sha256 -s 256 /dev/nvme0n1p3

===== LVM =====

cryptsetup luksOpen /dev/nvme0n1p3 lvm 

pvcreate /dev/mapper/lvm

vgcreate vg0 /dev/mapper/lvm

lvcreate -L50G -n root vg0

lvcreate -L18G -n swap vg0

lvcreate -l 100%FREE -n home vg0

mkfs.ext4 /dev/mapper/vg0-root

mkswap /dev/mapper/vg0-swap
swapon /dev/mapper/vg0-swap

mkfs.ext4 /dev/mapper/vg0-home

===== Partitionen einhängen =====

mkdir /mnt/gentoo

mount /dev/mapper/vg0-root /mnt/gentoo

mkdir /mnt/gentoo/home

mount /dev/mapper/vg0-home /mnt/gentoo/home

mkdir /mnt/gentoo/boot

mount /dev/nvme0n1p2 /mnt/gentoo/boot

mkdir /mnt/gentoo/boot/efi

mount /mnt/nvme0n1p1 /mnt/gentoo/boot/efi

cd /etc/gentoo

===== Gentoo laden =====

wget https://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/releases/amd64/autobuilds/current-stage3-amd64/stage3-amd64-20200722T214503Z.tar.xz

https://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/

tar xvf stage3-amd64-20200722T214503Z.tar.xz --xattrs --numeric-owner

===== Repos konfigurieren =====

mkdir etc/portage/repos.conf

cp usr/share/portage/config/repos.conf etc/portage/repos.conf/gentoo.conf

===== chroot vorbereiten =====

cp /etc/resolv.conf etc/resolv.conf

mount -t proc /proc proc
mount --rbind /sys sys
mount --make-rslave sys
mount --rbin /dev dev
mount --make-rslave dev

===== chrooten =====

chroot /mnt/gentoo /bin/bash

source /etc/profile

export PS1="(chroot) $PS1"

===== Portage konfiguieren =====

<code - /etc/portage/make.conf>
# These settings were set by the catalyst build script that automatically
# built this stage.
# Please consult /usr/share/portage/config/make.conf.example for a more
# detailed example.
COMMON_FLAGS="-march=native -O2 -pipe"
CFLAGS="${COMMON_FLAGS}"
CXXFLAGS="${COMMON_FLAGS}"
FCFLAGS="${COMMON_FLAGS}"
FFLAGS="${COMMON_FLAGS}"

# NOTE: This stage was built with the bindist Use flag enabled
PORTDIR="/var/db/repos/gentoo"
DISTDIR="/var/cache/distfiles"
PKGDIR="/var/cache/binpkgs"

# This sets the language of build output to English.
# Please keep this setting intact when reporting bugs.
LC_MESSAGES=C

MAKEOPTS="-j5"

GENTOO_MIRRORS="ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo https://linux.rz.ruhr-uni-bochum.de/do
wnload/gentoo-mirror/ http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ https://ftp.halifax.
rwth-aachen.de/gentoo/ http://ftp.halifax.rwth-aachen.de/gentoo/ ftp://ftp.halifax.rwth-aachen.de/gen
too/ rsync://ftp.halifax.rwth-aachen.de/gentoo/ https://ftp.fau.de/gentoo http://ftp.fau.de/gentoo ft
p://ftp.fau.de/gentoo rsync://ftp.fau.de/gentoo https://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ 
http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ ftp://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo
/ rsync://ftp-stud.hs-esslingen.de/gentoo/"

USE=""

EMERGE_DEFAULT_OPTS="--ask --tree --quiet --verbose"

VIDEO_CARDS="intel"
INPUT_DEVICES="libinput"
</code>

===== Portage Dateien laden =====

emerge-webrsync

===== Profil wählen =====

eselect profile set "default/linux/amd64/17.1/desktop/gnome"

===== Locales setzen =====

<code - /etc/conf.d/keymaps>
keymap="de-latin1"
</code>

echo "Europe/Berlin" > /etc/timezone

emerge --config sys-libs/timezone-data

<code - /etc/locale.gen>
en_GB ISO-8859-1
en_GB.UTF-8 UTF-8
de_DE ISO-8859-1
de_DE.UTF-8 UTF-8
</code>

locale-gen

eselect locale list

eselect locale set X

env-update && source /etc/profile

PS1="(chroot) $PS1"

===== fstab konfigurieren =====

blkid

<code - /etc/fstab>
UUID="FDE1-7057" /boot/efi vfat noauto,noatime 0 2
UUID="e8fb3fec-568b-45f5-879d-d19c34064940" /boot ext4 defaults 0 2
UUID="ea605252-8052-479a-a138-db0a5183de0c" / ext4 defaults 0 1
UUID="a994233d-d063-4340-a174-a0600e62151d" /home ext4 defaults 0 1
UUID="28e5ee39-6d32-46ea-82b7-b84768ad8d47" none swap sw 0 0
</code>

===== Genkernel und Grub =====

==== Kernel Sources laden ====

emerge sys-kernel/gentoo-sources
emerge sys-kernel/genkernel
emerge sys-fs/cryptsetup

==== Kernel bauen ====

genkernel --luks --lvm --no-zfs all

==== Grub bauen ====

echo "sys-boot/grub:2 device-mapper" >> /etc/portage/package.use/sys-boot 

emerge sys-boot/grub

==== Grub konfigurieren ====

<code - /etc/default/grub>
GRUB_CMDLINE_LINUX="dolvm crypt_root=UUID=4b9f9fb1-d23d-4344-bc8b-aabf7ec626a9 root=/dev/mapper/vg0-r
oot"
</code>

grub-install --target=x86_64-efi --efi-directory=/boot/efi

grub-mkconfig -o /boot/grub/grub.cfg
===== DIY Kernel =====

==== Kernel Konfig ====
  * Wir wollen direkt vom Kernel booten
    * https://wiki.gentoo.org/wiki/EFI_System_Partition
    * https://wiki.gentoo.org/wiki/EFI_stub_kernel