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easy-arch/README.md
Tommaso Chiti 21731733ed Fix readme.
2022-05-28 18:12:13 +02:00

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Introduction

easy-arch is a bash script made in order to install Arch Linux and configure it with proper settings (while keeping it vanilla):

  1. BTRFS bootable snapshots from GRUB
  2. LUKS2 encryption
  3. ZRAM as swap
  4. systemd-oomd
  5. Autodetect VMs and provide guest tools (if available)
  6. Sane defaults

How does it work?

  1. Download an Arch Linux ISO from here
  2. Flash the ISO onto an USB Flash Drive
  3. Boot the live environment
  4. Set the keyboard layout by using loadkeys <kblayout>
  5. Connect to the internet
  6. Run either one of these (always check twice before piping script into bash)
bash <(curl -s https://raw.githubusercontent.com/classy-giraffe/easy-arch/main/easy-arch.sh)
bash <(curl -sL bit.ly/easy-arch)```

### Partitions layout 

| Partition Number | Label     | Size              | Mountpoint     | Filesystem              |
|------------------|-----------|-------------------|----------------|-------------------------|
| 1                | ESP       | 512 MiB           | /boot/         | FAT32                   |
| 2                | Cryptroot | Rest of the disk  | /              | BTRFS Encrypted (LUKS2) |

The **partitions layout** is simple and it's inspired by [this section](https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#Btrfs_subvolumes_with_swap) of the Arch Linux Wiki. As you can see there're only two partitions:
1. A **FAT32**, 512MiB sized, mounted at `/boot/` for the ESP.
2. A **LUKS2 encrypted container**, which takes the rest of the disk space, mounted at `/` for the rootfs.

### BTRFS subvolumes layout

| Subvolume Number | Subvolume Name | Mountpoint                    |
|------------------|----------------|-------------------------------|
| 1                | @              | /                             |
| 2                | @home          | /home                         |
| 3                | @root          | /root                         |
| 4                | @srv           | /srv                          |
| 5                | @snapshots     | /.snapshots                   |
| 6                | @var_log       | /var/log                      |
| 7                | @var_pkgs      | /var/cache/pacman/pkg         |

The **BTRFS subvolumes layout** follows the traditional and suggested layout used by **Snapper**, you can find it [here](https://wiki.archlinux.org/index.php/Snapper#Suggested_filesystem_layout). Here's a brief explanation of the **BTRFS layout** I chose:
1. `@` mounted at `/`
2. `@home` mounted at `/home`
3. `@root` mounted at `/root`
4. `@srv` mounted at `/srv`
5. `@snapshots` mounted at `/.snapshots`
6. `@var_log` mounted at `/var/log`
7. `@var_pkgs` mounted at `/var/cache/pacman/pkg`