Install ZFS on Helios4 NAS

install_zfs_helios4.sh

#!/usr/bin/env bash
#
# Installation script for ZFS on Armbian for Helios4, a Marvell Armada 388 SoC
# with a ARM Cortex-A9 (ARMv7 32-bit) CPU, 2 GB ECC RAM and up to 4 disks.
#
# Tested on Armbian 19.11.3 (Debian Buster) with Linux 4.19.84
# (linux-image-current-mvebu) and ZFS version 0.7.12.


apt-get update
apt-get --yes upgrade

# Workaround for failing dkms builds
[[ -f /etc/environment ]] && [[ $(grep -c ARCH /etc/environment) -gt 0 ]] && mv /etc/environment /etc/environment.bak

# Ensure some essential build dependencies are installed
apt-get --yes install build-essential make autogen autoconf libtool

# Check that the correct kernel is installed
KERNEL_VER=current-mvebu
dpkg -l linux-image-${KERNEL_VER}
[[ $? -ne 0 ]] && echo "linux-image-${KERNEL_VER} not installed... Exit" && exit 1

# Check if kernel headers are installed; install if not and reboot
dpkg -l linux-headers-${KERNEL_VER}
[[ $? -ne 0 ]] && apt-get --yes install linux-headers-${KERNEL_VER} && reboot

# Install ZFS
apt-get --yes install spl-dkms zfs-dkms
systemctl daemon-reload
modprobe zfs
apt-get --yes install zfsutils-linux

# Install NFS and SMB servers
nfs_smb=y
while true; do
  echo "Install NFS and SMB servers [Y/n]?"
  read nfs_smb
  if [[ "$nfs_smb" == *"y"* || "$nfs_smb" == *"Y"* || -z $nfs_smb ]]; then
    apt-get --yes install nfs-kernel-server
    apt-get --yes install samba
    break
  elif [[ "$nfs_smb" == *"n"* ]]; then
    break
  fi
done

# Reboot
proceed=y
while true; do
  echo "Reboot system now [Y/n]?"
  read proceed
  [[ "$proceed" == *"y"* || "$proceed" == *"Y"* || -z $proceed ]] && break
  [[ "$proceed" == *"n"* ]] && exit 0
done
reboot