Shell script that creates a Arch Linux image for the Raspberry Pi 2. Downloads the latest distribution from archlinuxarm.org and creates the flash filesystems including boot partition. Partitions are aligned for typical SD cards and ext filesystem tuned accordingly.

create-arch-image-raspberry-pi-2.sh

#!/bin/sh -ex
losetup /dev/loop0 && exit 1 || true
image=arch-linux-$(date +%Y%m%d).img
wget -N http://archlinuxarm.org/os/ArchLinuxARM-rpi-2-latest.tar.gz
truncate -s 1G $image
losetup /dev/loop0 $image
parted -s /dev/loop0 mklabel msdos
parted -s /dev/loop0 unit MiB mkpart primary fat32 -- 1 32
parted -s /dev/loop0 set 1 boot on
parted -s /dev/loop0 unit MiB mkpart primary ext2 -- 32 -1
parted -s /dev/loop0 print
mkfs.vfat -I -F 32 -n System /dev/loop0p1
mkfs.ext4 -L root -b 4096 -E stride=4,stripe_width=1024 /dev/loop0p2
mkdir -p arch-boot
mount /dev/loop0p1 arch-boot
mkdir -p arch-root
mount /dev/loop0p2 arch-root
tar xfz ArchLinuxARM-rpi-2-latest.tar.gz -C arch-root
sed -i "s/ defaults / defaults,noatime /" arch-root/etc/fstab
mv arch-root/boot/* arch-boot/
umount arch-boot arch-root
losetup -d /dev/loop0