update

Add support for Debian 11

README.md

@@ -1,6 +1,6 @@
 # zfs-hetzner-vm
 
-Scripts to install Debian 10 or Ubuntu 18 with ZFS root on Hetzner root servers (virtual and dedicated).<br/>
+Scripts to install Debian 11, 10 or Ubuntu 18 with ZFS root on Hetzner root servers (virtual and dedicated).<br/>
 __WARNING:__ all data on the disk will be destroyed.
 
 ## How to use:
@@ -10,23 +10,36 @@ __WARNING:__ all data on the disk will be destroyed.
 * Click "enable rescue and power cycle",  add SSH key to the rescue console, set it OS to linux64, then press mount rescue and power cycle" button.
 * connect via SSH to rescue console, and run the script from this repo.
 
+Debian 11 minimal setup with SSH server
+
+````bash
+wget -qO- https://raw.githubusercontent.com/terem42/zfs-hetzner-vm/master/hetzner-debian11-zfs-setup.sh | bash -
+````
+
+Ubuntu 20 LTS minimal setup with SSH server
+
+````bash
+wget -qO- https://raw.githubusercontent.com/terem42/zfs-hetzner-vm/master/hetzner-ubuntu20-zfs-setup.sh | bash -
+````
+
 Debian 10 minimal setup with SSH server
 
-````
+````bash
-wget -qO- https://raw.githubusercontent.com/andrey42/zfs-hetzner-vm/master/hetzner-debian10-zfs-setup.sh | bash -
+wget -qO- https://raw.githubusercontent.com/terem42/zfs-hetzner-vm/master/hetzner-debian10-zfs-setup.sh | bash -
 ````
 
 Ubuntu 18.04 LTS minimal setup with SSH server
 
-````
+````bash
-wget -qO- https://raw.githubusercontent.com/andrey42/zfs-hetzner-vm/master/hetzner-ubuntu18-zfs-setup.sh | bash -
+wget -qO- https://raw.githubusercontent.com/terem42/zfs-hetzner-vm/master/hetzner-ubuntu18-zfs-setup.sh | bash -
 ````
 
 Answer script questions about desired hostname and ZFS ARC cache size.
 
 To cope with network failures its higly recommended to run the commands above inside screen console, type `man screen` for more info.
 Example of screen utility usage:
-````
+
+````bash
 screen -S zfs
 ````
 To detach from screen console, hit Ctrl-d then a

authorized_keys

@@ -1 +0,0 @@
-ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQEAqK6rUM7EfLlMPPHGyLsOFswtvWKXxzo6DRLZdY9bSMUfB4TlgjaOE/VxQphzpfd47xELMixja03DmQKLcJAgUeuL2UXJQY7FlPqNzbJaXikju60YWy0GzPAMmG/DXsA9qneJ1iv2jmCovG+3EtbsDc2xKLEawvM9G0viWF84Z0/6swLqRDUARQlJkrxKPTDDyc0ixEUNpjwrTRupogqlHeQ1xOriEewCEfXIKv+CVlU86o9t1+R+lN54cJ/U+EyP3YF20JNHIjQMsQm0j2R8wNgr7xXK+9NEDHdMApsfkDBpHfpJt1Nrf4qmct/RMukwPr/Oqdwe7JJ09UjyZTb1KQ==

hetzner-debian10-zfs-setup.sh

@@ -135,7 +135,7 @@ function check_prerequisites {
 function initial_load_debian_zed_cache {
   chroot_execute "mkdir /etc/zfs/zfs-list.cache"
   chroot_execute "touch /etc/zfs/zfs-list.cache/rpool"
-  chroot_execute "ln -s /usr/lib/zfs-linux/zed.d/history_event-zfs-list-cacher.sh /etc/zfs/zed.d/"
+  chroot_execute "ln -sf /usr/lib/zfs-linux/zed.d/history_event-zfs-list-cacher.sh /etc/zfs/zed.d/"
 
   chroot_execute "zed -F &"
 
@@ -450,6 +450,7 @@ function unmount_and_export_fs {
 
 #################### MAIN ################################
 export LC_ALL=en_US.UTF-8
+export NCURSES_NO_UTF8_ACS=1
 
 check_prerequisites
 
@@ -491,10 +492,19 @@ done
 
 echo "======= installing zfs on rescue system =========="
   echo "zfs-dkms zfs-dkms/note-incompatible-licenses note true" | debconf-set-selections
-
+  cd "$(mktemp -d)"
+  wget "$(curl -Ls https://api.github.com/repos/openzfs/zfs/releases/latest| grep "browser_download_url.*tar.gz"|grep -E "tar.gz\"$"| cut -d '"' -f 4)"
   apt update
-  apt install --yes -t buster-backports libelf-dev zfs-dkms
+  apt install libssl-dev uuid-dev zlib1g-dev libblkid-dev -y
+  tar xfv zfs*.tar.gz
+  rm *.tar.gz
+  cd zfs*
+  ./configure
+  make -j "$(nproc)"
+  make install
+  ldconfig
   modprobe zfs
+
   zfs --version
 
 echo "======= partitioning the disk =========="
@@ -552,8 +562,8 @@ zfs create -o canmount=off -o mountpoint=none "$v_bpool_name/BOOT"
 zfs create -o canmount=noauto -o mountpoint=/ "$v_rpool_name/ROOT/debian"
 zfs mount "$v_rpool_name/ROOT/debian"
 
-zfs create -o canmount=noauto -o mountpoint=/boot "$v_bpool_name/BOOT/ubuntu"
+zfs create -o canmount=noauto -o mountpoint=/boot "$v_bpool_name/BOOT/debian"
-zfs mount "$v_bpool_name/BOOT/ubuntu"
+zfs mount "$v_bpool_name/BOOT/debian"
 
 zfs create                                 "$v_rpool_name/home"
 zfs create -o mountpoint=/root             "$v_rpool_name/home/root"
@@ -698,20 +708,17 @@ echo "======= installing aux packages =========="
 chroot_execute "apt install --yes man wget curl software-properties-common nano htop gnupg"
 
 echo "======= installing zfs packages =========="
+chroot_execute 'echo "zfs-dkms zfs-dkms/note-incompatible-licenses note true" | debconf-set-selections'
+
 if [[ $v_zfs_experimental == "1" ]]; then
   chroot_execute "wget -O - https://terem42.github.io/zfs-debian/apt_pub.gpg | apt-key add -"
   chroot_execute "add-apt-repository 'deb https://terem42.github.io/zfs-debian/public zfs-debian-experimental main'"
   chroot_execute "apt update"
-else
-  chroot_execute "apt install --yes zfs-initramfs zfs-dkms"
-fi
-chroot_execute 'echo "zfs-dkms zfs-dkms/note-incompatible-licenses note true" | debconf-set-selections'
-
-if [[ $v_zfs_experimental == "1" ]]; then
-  chroot_execute "apt install --yes zfs-initramfs zfs-dkms zfsutils-linux"
-else
   chroot_execute "apt install -t zfs-debian-experimental --yes zfs-initramfs zfs-dkms zfsutils-linux"
+else
+  chroot_execute "apt install --yes -t buster-backports zfs-initramfs zfs-dkms zfsutils-linux"
 fi
+
 echo "======= installing OpenSSH and network tooling =========="
 chroot_execute "apt install --yes openssh-server net-tools"
 
@@ -737,7 +744,7 @@ Before=zfs-import-cache.service
 Type=oneshot
 RemainAfterExit=yes
 ExecStartPre=/bin/sh -c '[ -f /etc/zfs/zpool.cache ] && mv /etc/zfs/zpool.cache /etc/zfs/preboot_zpool.cache || true'
-ExecStart=/sbin/zpool import -N -o cachefile=none $v_bpool_name
+ExecStart=/sbin/zpool import -N -o cachefile=none -d /dev/disk/by-id $v_bpool_name
 ExecStartPost=/bin/sh -c '[ -f /etc/zfs/preboot_zpool.cache ] && mv /etc/zfs/preboot_zpool.cache /etc/zfs/zpool.cache || true'
 
 [Install]
@@ -787,18 +794,6 @@ if [[ $v_encrypt_rpool == "1" ]]; then
   rm -rf "$c_zfs_mount_dir/etc/dropbear-initramfs/dropbear_dss_host_key"
 fi 
 
-#cd "$c_zfs_mount_dir/root"
-#wget http://ftp.de.debian.org/debian/pool/main/libt/libtommath/libtommath1_1.1.0-3_amd64.deb
-#wget http://ftp.de.debian.org/debian/pool/main/d/dropbear/dropbear-bin_2018.76-5_amd64.deb
-#wget http://ftp.de.debian.org/debian/pool/main/d/dropbear/dropbear-initramfs_2018.76-5_all.deb
-
-#chroot_execute "dpkg -i /root/libtommath1_1.1.0-3_amd64.deb"
-#chroot_execute "dpkg -i /root/dropbear-bin_2018.76-5_amd64.deb"
-#chroot_execute "dpkg -i /root/dropbear-initramfs_2018.76-5_all.deb"
-
-#rm $c_zfs_mount_dir/root/*.deb
-#cd /root
-
 echo "============setup root prompt============"
 cat > "$c_zfs_mount_dir/root/.bashrc" <<CONF
 export PS1='\[\033[01;31m\]\u\[\033[01;33m\]@\[\033[01;32m\]\h \[\033[01;33m\]\w \[\033[01;35m\]\$ \[\033[00m\]'
@@ -810,8 +805,31 @@ CONF
 echo "========running packages upgrade==========="
 chroot_execute "apt upgrade --yes"
 
-#echo "===========add static route to initramfs via hook to add default routes due to  initramfs DHCP bug ========="
+echo "===========add static route to initramfs via hook to add default routes for Hetzner due to Debian/Ubuntu initramfs DHCP bug ========="
-# removed
+mkdir -p "$c_zfs_mount_dir/usr/share/initramfs-tools/scripts/init-premount"
+cat > "$c_zfs_mount_dir/usr/share/initramfs-tools/scripts/init-premount/static-route" <<'CONF'
+#!/bin/sh
+PREREQ=""
+prereqs()
+{
+    echo "$PREREQ"
+}
+
+case $1 in
+prereqs)
+    prereqs
+    exit 0
+    ;;
+esac
+
+. /scripts/functions
+# Begin real processing below this line
+
+configure_networking
+
+ip route add 172.31.1.1/255.255.255.255 dev ens3
+ip route add default via 172.31.1.1 dev ens3
+CONF
 
 echo "======= update initramfs =========="
 chroot_execute "update-initramfs -u -k all"
@@ -827,8 +845,8 @@ else
 fi
 
 echo "======= setting mountpoints =========="
-chroot_execute "zfs set mountpoint=legacy $v_bpool_name/BOOT/ubuntu"
+chroot_execute "zfs set mountpoint=legacy $v_bpool_name/BOOT/debian"
-chroot_execute "echo $v_bpool_name/BOOT/ubuntu /boot zfs nodev,relatime,x-systemd.requires=zfs-import-bpool.service 0 0 > /etc/fstab"
+chroot_execute "echo $v_bpool_name/BOOT/debian /boot zfs nodev,relatime,x-systemd.requires=zfs-import-bpool.service 0 0 > /etc/fstab"
 
 chroot_execute "zfs set mountpoint=legacy $v_rpool_name/var/log"
 chroot_execute "echo $v_rpool_name/var/log /var/log zfs nodev,relatime 0 0 >> /etc/fstab"

hetzner-debian11-zfs-setup.sh

@@ -2,11 +2,11 @@
 
 : <<'end_header_info'
 (c) Andrey Prokopenko job@terem.fr
-fully automatic script to install Debian 10 with ZFS root on Hetzner VPS
+fully automatic script to install Debian 11 with ZFS root on Hetzner VPS
 WARNING: all data on the disk will be destroyed
-How to use: add SSH key to the rescue console, set it OS to linux64, then press mount rescue and power sysle
+How to use: add SSH key to the rescue console, set it OS to linux64, then press "mount rescue and power cycle" button
 Next, connect via SSH to console, and run the script
-Answer script questions about desired hostname and ZFS ARC cache size
+Answer script questions about desired hostname, ZFS ARC cache size et cetera
 To cope with network failures its higly recommended to run the script inside screen console
 screen -dmS zfs
 screen -r zfs
@@ -35,12 +35,12 @@ v_zfs_experimental=
 v_suitable_disks=()
 
 # Constants
-c_deb_packages_repo=http://deb.debian.org/debian
+c_deb_packages_repo=https://mirror.hetzner.com/debian/packages
-c_deb_security_repo=http://deb.debian.org/debian-security/
+c_deb_security_repo=https://mirror.hetzner.com/debian/security
 
 c_default_zfs_arc_max_mb=250
 c_default_bpool_tweaks="-o ashift=12 -O compression=lz4"
-c_default_rpool_tweaks="-o ashift=12 -O acltype=posixacl -O compression=lz4 -O dnodesize=auto -O relatime=on -O xattr=sa -O normalization=formD"
+c_default_rpool_tweaks="-o ashift=12 -O acltype=posixacl -O compression=zstd-9 -O dnodesize=auto -O relatime=on -O xattr=sa -O normalization=formD"
 c_default_hostname=terem
 c_zfs_mount_dir=/mnt
 c_log_dir=$(dirname "$(mktemp)")/zfs-hetzner-vm
@@ -102,11 +102,11 @@ function display_intro_banner {
   print_step_info_header
 
   local dialog_message='Hello!
-This script will prepare the ZFS pools, then install and configure minimal Debian 10 with ZFS root on Hetzner hosting VPS instance
+This script will prepare the ZFS pools, then install and configure minimal Debian 11 with ZFS root on Hetzner hosting VPS instance
 The script with minimal changes may be used on any other hosting provider  supporting KVM virtualization and offering Debian-based rescue system.
 In order to stop the procedure, hit Esc twice during dialogs (excluding yes/no ones), or Ctrl+C while any operation is running.
 '
-  dialog --ascii-lines --msgbox "$dialog_message" 30 100
+  dialog --msgbox "$dialog_message" 30 100
 }
 
 function store_os_distro_information {
@@ -123,10 +123,10 @@ function check_prerequisites {
     echo 'This script must be run with administrative privileges!'
     exit 1
   fi
-#  if [[ ! -r /root/.ssh/authorized_keys ]]; then
+  if [[ ! -r /root/.ssh/authorized_keys ]]; then
-#    echo "SSH pubkey file is absent, please add it to the rescue system setting, then reboot into rescue system and run the script"
+    echo "SSH pubkey file is absent, please add it to the rescue system setting, then reboot into rescue system and run the script"
-#    exit 1
+    exit 1
-#  fi
+  fi
   if ! dpkg-query --showformat="\${Status}" -W dialog 2> /dev/null | grep -q "install ok installed"; then
     apt install --yes dialog
   fi
@@ -135,7 +135,7 @@ function check_prerequisites {
 function initial_load_debian_zed_cache {
   chroot_execute "mkdir /etc/zfs/zfs-list.cache"
   chroot_execute "touch /etc/zfs/zfs-list.cache/rpool"
-  chroot_execute "ln -s /usr/lib/zfs-linux/zed.d/history_event-zfs-list-cacher.sh /etc/zfs/zed.d/"
+  chroot_execute "ln -sf /usr/lib/zfs-linux/zed.d/history_event-zfs-list-cacher.sh /etc/zfs/zed.d/"
 
   chroot_execute "zed -F &"
 
@@ -210,7 +210,7 @@ LOG
 
 If you think this is a bug, please open an issue on https://github.com/terem42/zfs-hetzner-vm/issues, and attach the file `'"$c_disks_log"'`.
 '
-    dialog --ascii-lines --msgbox "$dialog_message" 30 100
+    dialog --msgbox "$dialog_message" 30 100
 
     exit 1
   fi
@@ -239,7 +239,7 @@ function select_disks {
 
 Devices with mounted partitions, cdroms, and removable devices are not displayed!
 "
-    mapfile -t v_selected_disks < <(dialog --ascii-lines --separate-output --checklist "$dialog_message" 30 100 $((${#menu_entries_option[@]} / 3)) "${menu_entries_option[@]}" 3>&1 1>&2 2>&3)
+    mapfile -t v_selected_disks < <(dialog --separate-output --checklist "$dialog_message" 30 100 $((${#menu_entries_option[@]} / 3)) "${menu_entries_option[@]}" 3>&1 1>&2 2>&3)
 
     if [[ ${#v_selected_disks[@]} -gt 0 ]]; then
       break
@@ -256,7 +256,7 @@ function ask_swap_size {
   local swap_size_invalid_message=
 
   while [[ ! $v_swap_size =~ ^[0-9]+$ ]]; do
-    v_swap_size=$(dialog --ascii-lines --inputbox "${swap_size_invalid_message}Enter the swap size in GiB (0 for no swap):" 30 100 2 3>&1 1>&2 2>&3)
+    v_swap_size=$(dialog --inputbox "${swap_size_invalid_message}Enter the swap size in GiB (0 for no swap):" 30 100 2 3>&1 1>&2 2>&3)
 
     swap_size_invalid_message="Invalid swap size! "
   done
@@ -271,7 +271,7 @@ function ask_free_tail_space {
   local tail_space_invalid_message=
 
   while [[ ! $v_free_tail_space =~ ^[0-9]+$ ]]; do
-    v_free_tail_space=$(dialog --ascii-lines --inputbox "${tail_space_invalid_message}Enter the space to leave at the end of each disk (0 for none):" 30 100 0 3>&1 1>&2 2>&3)
+    v_free_tail_space=$(dialog --inputbox "${tail_space_invalid_message}Enter the space to leave at the end of each disk (0 for none):" 30 100 0 3>&1 1>&2 2>&3)
 
     tail_space_invalid_message="Invalid size! "
   done
@@ -286,7 +286,7 @@ function ask_zfs_arc_max_size {
   local zfs_arc_max_invalid_message=
 
   while [[ ! $v_zfs_arc_max_mb =~ ^[0-9]+$ ]]; do
-    v_zfs_arc_max_mb=$(dialog --ascii-lines --inputbox "${zfs_arc_max_invalid_message}Enter ZFS ARC cache max size in Mb (minimum 64Mb, enter 0 for ZFS default value, the default will take up to 50% of memory):" 30 100 "$c_default_zfs_arc_max_mb" 3>&1 1>&2 2>&3)
+    v_zfs_arc_max_mb=$(dialog --inputbox "${zfs_arc_max_invalid_message}Enter ZFS ARC cache max size in Mb (minimum 64Mb, enter 0 for ZFS default value, the default will take up to 50% of memory):" 30 100 "$c_default_zfs_arc_max_mb" 3>&1 1>&2 2>&3)
 
     zfs_arc_max_invalid_message="Invalid size! "
   done
@@ -302,14 +302,14 @@ function ask_pool_names {
   local bpool_name_invalid_message=
 
   while [[ ! $v_bpool_name =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
-    v_bpool_name=$(dialog --ascii-lines --inputbox "${bpool_name_invalid_message}Insert the name for the boot pool" 30 100 bpool 3>&1 1>&2 2>&3)
+    v_bpool_name=$(dialog --inputbox "${bpool_name_invalid_message}Insert the name for the boot pool" 30 100 bpool 3>&1 1>&2 2>&3)
 
     bpool_name_invalid_message="Invalid pool name! "
   done
   local rpool_name_invalid_message=
 
   while [[ ! $v_rpool_name =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
-    v_rpool_name=$(dialog --ascii-lines --inputbox "${rpool_name_invalid_message}Insert the name for the root pool" 30 100 rpool 3>&1 1>&2 2>&3)
+    v_rpool_name=$(dialog --inputbox "${rpool_name_invalid_message}Insert the name for the root pool" 30 100 rpool 3>&1 1>&2 2>&3)
 
     rpool_name_invalid_message="Invalid pool name! "
   done
@@ -321,8 +321,8 @@ function ask_pool_tweaks {
   # shellcheck disable=SC2119
   print_step_info_header
 
-  v_bpool_tweaks=$(dialog --ascii-lines --inputbox "Insert the tweaks for the boot pool" 30 100 -- "$c_default_bpool_tweaks" 3>&1 1>&2 2>&3)
+  v_bpool_tweaks=$(dialog --inputbox "Insert the tweaks for the boot pool" 30 100 -- "$c_default_bpool_tweaks" 3>&1 1>&2 2>&3)
-  v_rpool_tweaks=$(dialog --ascii-lines --inputbox "Insert the tweaks for the root pool" 30 100 -- "$c_default_rpool_tweaks" 3>&1 1>&2 2>&3)
+  v_rpool_tweaks=$(dialog --inputbox "Insert the tweaks for the root pool" 30 100 -- "$c_default_rpool_tweaks" 3>&1 1>&2 2>&3)
 
   print_variables v_bpool_tweaks v_rpool_tweaks
 }
@@ -337,8 +337,8 @@ function ask_root_password {
   local password_repeat=-
 
   while [[ "$v_root_password" != "$password_repeat" || "$v_root_password" == "" ]]; do
-    v_root_password=$(dialog --ascii-lines --passwordbox "${password_invalid_message}Please enter the root account password (can't be empty):" 30 100 3>&1 1>&2 2>&3)
+    v_root_password=$(dialog --passwordbox "${password_invalid_message}Please enter the root account password (can't be empty):" 30 100 3>&1 1>&2 2>&3)
-    password_repeat=$(dialog --ascii-lines --passwordbox "Please repeat the password:" 30 100 3>&1 1>&2 2>&3)
+    password_repeat=$(dialog --passwordbox "Please repeat the password:" 30 100 3>&1 1>&2 2>&3)
 
     password_invalid_message="Passphrase empty, or not matching! "
   done
@@ -348,7 +348,7 @@ function ask_root_password {
 function ask_encryption {
   print_step_info_header
 
-  if dialog --ascii-lines --yesno 'Do you want to encrypt the root pool?' 30 100; then
+  if dialog --defaultno --yesno 'Do you want to encrypt the root pool?' 30 100; then
     v_encrypt_rpool=1
   fi
   set +x
@@ -356,8 +356,8 @@ function ask_encryption {
     local passphrase_invalid_message=
     local passphrase_repeat=-
     while [[ "$v_passphrase" != "$passphrase_repeat" || ${#v_passphrase} -lt 8 ]]; do
-      v_passphrase=$(dialog --ascii-lines --passwordbox "${passphrase_invalid_message}Please enter the passphrase for the root pool (8 chars min.):" 30 100 3>&1 1>&2 2>&3)
+      v_passphrase=$(dialog --passwordbox "${passphrase_invalid_message}Please enter the passphrase for the root pool (8 chars min.):" 30 100 3>&1 1>&2 2>&3)
-      passphrase_repeat=$(dialog --ascii-lines --passwordbox "Please repeat the passphrase:" 30 100 3>&1 1>&2 2>&3)
+      passphrase_repeat=$(dialog --passwordbox "Please repeat the passphrase:" 30 100 3>&1 1>&2 2>&3)
 
       passphrase_invalid_message="Passphrase too short, or not matching! "
     done
@@ -368,7 +368,7 @@ function ask_encryption {
 function ask_zfs_experimental {
   print_step_info_header
 
-  if dialog --ascii-lines --yesno 'Do you want to use experimental zfs module build?' 30 100; then
+  if dialog --defaultno --yesno 'Do you want to use experimental zfs module build?' 30 100; then
     v_zfs_experimental=1
   fi
 }
@@ -380,7 +380,7 @@ function ask_hostname {
   local hostname_invalid_message=
 
   while [[ ! $v_hostname =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
-    v_hostname=$(dialog --ascii-lines --inputbox "${hostname_invalid_message}Set the host name" 30 100 "$c_default_hostname" 3>&1 1>&2 2>&3)
+    v_hostname=$(dialog --inputbox "${hostname_invalid_message}Set the host name" 30 100 "$c_default_hostname" 3>&1 1>&2 2>&3)
 
     hostname_invalid_message="Invalid host name! "
   done
@@ -450,6 +450,7 @@ function unmount_and_export_fs {
 
 #################### MAIN ################################
 export LC_ALL=en_US.UTF-8
+export NCURSES_NO_UTF8_ACS=1
 
 check_prerequisites
 
@@ -490,20 +491,18 @@ for kver in $(find /lib/modules/* -maxdepth 0 -type d | grep -v "$(uname -r)" |
 done
 
 echo "======= installing zfs on rescue system =========="
-cat > "/etc/apt/sources.list" <<CONF
+  cd "$(mktemp -d)"
-deb [arch=i386,amd64] $c_deb_packages_repo buster main contrib non-free
+  wget "$(curl -Ls https://api.github.com/repos/openzfs/zfs/releases/latest| grep "browser_download_url.*tar.gz"|grep -E "tar.gz\"$"| cut -d '"' -f 4)"
-deb [arch=i386,amd64] $c_deb_packages_repo buster-updates main contrib non-free
-deb [arch=i386,amd64] $c_deb_packages_repo buster-backports main contrib non-free
-deb [arch=i386,amd64] $c_deb_security_repo buster/updates main contrib non-free
-CONF
-
-apt update
-
-  echo "zfs-dkms zfs-dkms/note-incompatible-licenses note true" | debconf-set-selections
-
   apt update
-  apt install --yes -t buster-backports libelf-dev zfs-dkms wget debootstrap
+  apt install libssl-dev uuid-dev zlib1g-dev libblkid-dev -y
-  modprobe zfs
+  tar xfv zfs*.tar.gz
+  rm *.tar.gz
+  cd zfs*
+  ./configure
+  make -j "$(nproc)"
+  make install
+  ldconfig
+  modprobe zfs  
   zfs --version
 
 echo "======= partitioning the disk =========="
@@ -515,7 +514,7 @@ echo "======= partitioning the disk =========="
   fi
 
   for selected_disk in "${v_selected_disks[@]}"; do
-    wipefs --all "$selected_disk"
+    wipefs --all --force "$selected_disk"
     sgdisk -a1 -n1:24K:+1000K            -t1:EF02 "$selected_disk"
     sgdisk -n2:0:+512M                   -t2:BF01 "$selected_disk" # Boot pool
     sgdisk -n3:0:"$tail_space_parameter" -t3:BF01 "$selected_disk" # Root pool
@@ -561,8 +560,8 @@ zfs create -o canmount=off -o mountpoint=none "$v_bpool_name/BOOT"
 zfs create -o canmount=noauto -o mountpoint=/ "$v_rpool_name/ROOT/debian"
 zfs mount "$v_rpool_name/ROOT/debian"
 
-zfs create -o canmount=noauto -o mountpoint=/boot "$v_bpool_name/BOOT/ubuntu"
+zfs create -o canmount=noauto -o mountpoint=/boot "$v_bpool_name/BOOT/debian"
-zfs mount "$v_bpool_name/BOOT/ubuntu"
+zfs mount "$v_bpool_name/BOOT/debian"
 
 zfs create                                 "$v_rpool_name/home"
 zfs create -o mountpoint=/root             "$v_rpool_name/home/root"
@@ -592,12 +591,12 @@ if [[ $v_swap_size -gt 0 ]]; then
     "$v_rpool_name/swap"
 
   udevadm settle
- 
+
   mkswap -f "/dev/zvol/$v_rpool_name/swap"
 fi
 
 echo "======= setting up initial system packages =========="
-debootstrap --arch=amd64 buster "$c_zfs_mount_dir" "$c_deb_packages_repo" 
+debootstrap --arch=amd64 bullseye "$c_zfs_mount_dir" "$c_deb_packages_repo"
 
 zfs set devices=off "$v_rpool_name"
 
@@ -618,7 +617,7 @@ ff02::2 ip6-allrouters
 ff02::3 ip6-allhosts
 CONF
 
-ip6addr=$(ip -6 a s | grep -E "inet6.+scope.+link" | sed -nE 's/.+inet6\s(([0-9a-z]{4,4}:{0,2}){5,5}\/[0-9]{2,2}).+/\1/p')
+ip6addr_prefix=$(ip -6 a s | grep -E "inet6.+global" | sed -nE 's/.+inet6\s(([0-9a-z]{1,4}:){4,4}).+/\1/p')
 
 cat <<CONF > /mnt/etc/systemd/network/10-eth0.network
 [Match]
@@ -626,11 +625,9 @@ Name=eth0
 
 [Network]
 DHCP=ipv4
-
+Address=${ip6addr_prefix}:1/64
-Address=${ip6addr}
 Gateway=fe80::1
 CONF
-
 chroot_execute "systemctl enable systemd-networkd.service"
 
 
@@ -643,16 +640,16 @@ done
 
 echo "======= setting apt repos =========="
 cat > "$c_zfs_mount_dir/etc/apt/sources.list" <<CONF
-deb [arch=i386,amd64] $c_deb_packages_repo buster main contrib non-free
+deb $c_deb_packages_repo bullseye main contrib non-free
-deb [arch=i386,amd64] $c_deb_packages_repo buster-updates main contrib non-free
+deb $c_deb_packages_repo bullseye-updates main contrib non-free
-deb [arch=i386,amd64] $c_deb_packages_repo buster-backports main contrib non-free
+deb $c_deb_security_repo bullseye-security main contrib non-free
-deb [arch=i386,amd64] $c_deb_security_repo buster/updates main contrib non-free
+deb $c_deb_packages_repo bullseye-backports main contrib non-free
 CONF
 
 chroot_execute "apt update"
 
 echo "======= setting locale, console and language =========="
-chroot_execute "apt install --yes -qq locales debconf-i18n apt-utils keyboard-configuration console-setup"
+chroot_execute "apt install --yes -qq locales debconf-i18n apt-utils"
 sed -i 's/# en_US.UTF-8/en_US.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
 sed -i 's/# fr_FR.UTF-8/fr_FR.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
 sed -i 's/# fr_FR.UTF-8/fr_FR.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
@@ -662,15 +659,15 @@ sed -i 's/# de_DE.UTF-8/de_DE.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
 chroot_execute 'cat <<CONF | debconf-set-selections
 locales locales/default_environment_locale      select  en_US.UTF-8
 keyboard-configuration  keyboard-configuration/store_defaults_in_debconf_db     boolean true
-keyboard-configuration  keyboard-configuration/variant  select  English
+keyboard-configuration  keyboard-configuration/variant  select  German
 keyboard-configuration  keyboard-configuration/unsupported_layout       boolean true
 keyboard-configuration  keyboard-configuration/modelcode        string  pc105
 keyboard-configuration  keyboard-configuration/unsupported_config_layout        boolean true
-keyboard-configuration  keyboard-configuration/layout   select  English
+keyboard-configuration  keyboard-configuration/layout   select  German
-keyboard-configuration  keyboard-configuration/layoutcode       string  en
+keyboard-configuration  keyboard-configuration/layoutcode       string  de
 keyboard-configuration  keyboard-configuration/optionscode      string
 keyboard-configuration  keyboard-configuration/toggle   select  No toggling
-keyboard-configuration  keyboard-configuration/xkb-keymap       select  en
+keyboard-configuration  keyboard-configuration/xkb-keymap       select  de
 keyboard-configuration  keyboard-configuration/switch   select  No temporary switch
 keyboard-configuration  keyboard-configuration/unsupported_config_options       boolean true
 keyboard-configuration  keyboard-configuration/ctrl_alt_bksp    boolean false
@@ -694,6 +691,7 @@ CONF'
 
 chroot_execute "dpkg-reconfigure locales -f noninteractive"
 echo -e "LC_ALL=en_US.UTF-8\nLANG=en_US.UTF-8\n" >> "$c_zfs_mount_dir/etc/environment"
+chroot_execute "apt install -qq --yes keyboard-configuration console-setup"
 chroot_execute "dpkg-reconfigure keyboard-configuration -f noninteractive"
 chroot_execute "dpkg-reconfigure console-setup -f noninteractive"
 chroot_execute "setupcon"
@@ -702,36 +700,29 @@ chroot_execute "rm -f /etc/localtime /etc/timezone"
 chroot_execute "dpkg-reconfigure tzdata -f noninteractive "
 
 echo "======= installing latest kernel============="
-chroot_execute "apt install --yes -t buster-backports linux-image${v_kernel_variant}-amd64 linux-headers${v_kernel_variant}-amd64"
+chroot_execute "apt install --yes linux-image${v_kernel_variant}-amd64 linux-headers${v_kernel_variant}-amd64"
 
 echo "======= installing aux packages =========="
 chroot_execute "apt install --yes man wget curl software-properties-common nano htop gnupg"
 
 echo "======= installing zfs packages =========="
-if [[ $v_zfs_experimental == "1" ]]; then
-  chroot_execute "apt install software-properties-common"
-  chroot_execute "wget -O - https://apt.terem.fr/apt_pub.gpg | apt-key add -"
-  chroot_execute "add-apt-repository 'deb [arch=amd64] http://apt.terem.fr/public zfs-debian main'"
-  chroot_execute "apt update"
-  chroot_execute "bash -c \"echo 'zfs-dkms zfs-dkms/note-incompatible-licenses note true' | debconf-set-selections\""
-  chroot_execute "apt install -t zfs-debian --yes zfs-dkms zfsutils-linux"
-else
-  chroot_execute "apt install --yes zfs-initramfs zfs-dkms"
-fi
 chroot_execute 'echo "zfs-dkms zfs-dkms/note-incompatible-licenses note true" | debconf-set-selections'
 
 if [[ $v_zfs_experimental == "1" ]]; then
-  chroot_execute "apt install --yes -t zfs-debian-experimental zfs-initramfs zfs-dkms zfsutils-linux"
+  chroot_execute "wget -O - https://terem42.github.io/zfs-debian/apt_pub.gpg | apt-key add -"
+  chroot_execute "add-apt-repository 'deb https://terem42.github.io/zfs-debian/public zfs-debian-experimental main'"
+  chroot_execute "apt update"
+  chroot_execute "apt install -t zfs-debian-experimental --yes zfs-initramfs zfs-dkms zfsutils-linux"
 else
   chroot_execute "apt install --yes zfs-initramfs zfs-dkms zfsutils-linux"
 fi
+
 echo "======= installing OpenSSH and network tooling =========="
 chroot_execute "apt install --yes openssh-server net-tools"
 
 echo "======= setup OpenSSH  =========="
 mkdir -p "$c_zfs_mount_dir/root/.ssh/"
-wget https://raw.githubusercontent.com/terem42/zfs-hetzner-vm/vmtest/authorized_keys -O "$c_zfs_mount_dir/root/.ssh/authorized_keys"
+cp /root/.ssh/authorized_keys "$c_zfs_mount_dir/root/.ssh/authorized_keys"
-#cp /root/.ssh/authorized_keys "$c_zfs_mount_dir/root/.ssh/authorized_keys"
 sed -i 's/#PasswordAuthentication yes/PasswordAuthentication no/g' "$c_zfs_mount_dir/etc/ssh/sshd_config"
 sed -i 's/#PubkeyAuthentication yes/PubkeyAuthentication yes/g' "$c_zfs_mount_dir/etc/ssh/sshd_config"
 chroot_execute "rm /etc/ssh/ssh_host_*"
@@ -740,13 +731,34 @@ chroot_execute "dpkg-reconfigure openssh-server -f noninteractive"
 echo "======= set root password =========="
 chroot_execute "echo root:$(printf "%q" "$v_root_password") | chpasswd"
 
+echo "======= setting up zfs services =========="
+chroot_execute "cat > /etc/systemd/system/zfs-import-bpool.service <<UNIT
+[Unit]
+DefaultDependencies=no
+Before=zfs-import-scan.service
+Before=zfs-import-cache.service
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStartPre=/bin/sh -c '[ -f /etc/zfs/zpool.cache ] && mv /etc/zfs/zpool.cache /etc/zfs/preboot_zpool.cache || true'
+ExecStart=/sbin/zpool import -N -o cachefile=none -d /dev/disk/by-id $v_bpool_name
+ExecStartPost=/bin/sh -c '[ -f /etc/zfs/preboot_zpool.cache ] && mv /etc/zfs/preboot_zpool.cache /etc/zfs/zpool.cache || true'
+
+[Install]
+WantedBy=zfs-import.target
+UNIT"
+
+chroot_execute "systemctl enable zfs-import-bpool.service"
+
 echo "========setting up zfs module parameters========"
 chroot_execute "echo options zfs zfs_arc_max=$((v_zfs_arc_max_mb * 1024 * 1024)) >> /etc/modprobe.d/zfs.conf"
 
 echo "======= setting up grub =========="
 chroot_execute "echo 'grub-pc grub-pc/install_devices_empty   boolean true' | debconf-set-selections"
+chroot_execute "DEBIAN_FRONTEND=noninteractive apt install --yes grub-legacy"
 chroot_execute "DEBIAN_FRONTEND=noninteractive apt install --yes grub-pc"
-chroot_execute "grub-install ${v_selected_disks[0]}"
+chroot_execute "grub-install --recheck ${v_selected_disks[0]}"
 
 chroot_execute "sed -i 's/#GRUB_TERMINAL=console/GRUB_TERMINAL=console/g' /etc/default/grub"
 chroot_execute "sed -i 's|GRUB_CMDLINE_LINUX_DEFAULT=.*|GRUB_CMDLINE_LINUX_DEFAULT=\"net.ifnames=0\"|' /etc/default/grub"
@@ -765,8 +777,7 @@ if [[ $v_encrypt_rpool == "1" ]]; then
 
   chroot_execute "apt install --yes dropbear-initramfs"
 
-  cp "$c_zfs_mount_dir/root/.ssh/authorized_keys" "$c_zfs_mount_dir/etc/dropbear-initramfs/authorized_keys"
+  cp /root/.ssh/authorized_keys "$c_zfs_mount_dir/etc/dropbear-initramfs/authorized_keys"
-  #cp /root/.ssh/authorized_keys "$c_zfs_mount_dir/etc/dropbear-initramfs/authorized_keys"
 
   cp "$c_zfs_mount_dir/etc/ssh/ssh_host_rsa_key" "$c_zfs_mount_dir/etc/ssh/ssh_host_rsa_key_temp"
   chroot_execute "ssh-keygen -p -i -m pem -N '' -f /etc/ssh/ssh_host_rsa_key_temp"
@@ -780,19 +791,7 @@ if [[ $v_encrypt_rpool == "1" ]]; then
   rm -rf "$c_zfs_mount_dir/etc/ssh/ssh_host_ecdsa_key_temp"
 
   rm -rf "$c_zfs_mount_dir/etc/dropbear-initramfs/dropbear_dss_host_key"
-fi 
+fi
-
-#cd "$c_zfs_mount_dir/root"
-#wget http://ftp.de.debian.org/debian/pool/main/libt/libtommath/libtommath1_1.1.0-3_amd64.deb
-#wget http://ftp.de.debian.org/debian/pool/main/d/dropbear/dropbear-bin_2018.76-5_amd64.deb
-#wget http://ftp.de.debian.org/debian/pool/main/d/dropbear/dropbear-initramfs_2018.76-5_all.deb
-
-#chroot_execute "dpkg -i /root/libtommath1_1.1.0-3_amd64.deb"
-#chroot_execute "dpkg -i /root/dropbear-bin_2018.76-5_amd64.deb"
-#chroot_execute "dpkg -i /root/dropbear-initramfs_2018.76-5_all.deb"
-
-#rm $c_zfs_mount_dir/root/*.deb
-#cd /root
 
 echo "============setup root prompt============"
 cat > "$c_zfs_mount_dir/root/.bashrc" <<CONF
@@ -805,8 +804,33 @@ CONF
 echo "========running packages upgrade==========="
 chroot_execute "apt upgrade --yes"
 
-#echo "===========add static route to initramfs via hook to add default routes due to  initramfs DHCP bug ========="
+echo "===========add static route to initramfs via hook to add default routes for Hetzner due to Debian/Ubuntu initramfs DHCP bug ========="
-# removed
+mkdir -p "$c_zfs_mount_dir/usr/share/initramfs-tools/scripts/init-premount"
+cat > "$c_zfs_mount_dir/usr/share/initramfs-tools/scripts/init-premount/static-route" <<'CONF'
+#!/bin/sh
+PREREQ=""
+prereqs()
+{
+    echo "$PREREQ"
+}
+
+case $1 in
+prereqs)
+    prereqs
+    exit 0
+    ;;
+esac
+
+. /scripts/functions
+# Begin real processing below this line
+
+configure_networking
+
+ip route add 172.31.1.1/255.255.255.255 dev ens3
+ip route add default via 172.31.1.1 dev ens3
+CONF
+
+chmod 755 "$c_zfs_mount_dir/usr/share/initramfs-tools/scripts/init-premount/static-route"
 
 echo "======= update initramfs =========="
 chroot_execute "update-initramfs -u -k all"
@@ -822,8 +846,8 @@ else
 fi
 
 echo "======= setting mountpoints =========="
-chroot_execute "zfs set mountpoint=legacy $v_bpool_name/BOOT/ubuntu"
+chroot_execute "zfs set mountpoint=legacy $v_bpool_name/BOOT/debian"
-chroot_execute "echo $v_bpool_name/BOOT/ubuntu /boot zfs nodev,relatime,x-systemd.requires=zfs-import-bpool.service 0 0 > /etc/fstab"
+chroot_execute "echo $v_bpool_name/BOOT/debian /boot zfs nodev,relatime,x-systemd.requires=zfs-import-bpool.service 0 0 > /etc/fstab"
 
 chroot_execute "zfs set mountpoint=legacy $v_rpool_name/var/log"
 chroot_execute "echo $v_rpool_name/var/log /var/log zfs nodev,relatime 0 0 >> /etc/fstab"

hetzner-ubuntu18-zfs-setup.sh

@@ -417,6 +417,7 @@ function unmount_and_export_fs {
 
 #################### MAIN ################################
 export LC_ALL=en_US.UTF-8
+export NCURSES_NO_UTF8_ACS=1
 
 check_prerequisites
 
@@ -618,7 +619,7 @@ CONF
 chroot_execute "apt update"
 
 echo "======= setting locale, console and language =========="
-chroot_execute "apt install --yes -qq locales debconf-i18n apt-utils"
+chroot_execute "apt install --yes -qq locales debconf-i18n apt-utils keyboard-configuration console-setup"
 sed -i 's/# en_US.UTF-8/en_US.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
 sed -i 's/# fr_FR.UTF-8/fr_FR.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
 sed -i 's/# fr_FR.UTF-8/fr_FR.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
@@ -660,7 +661,6 @@ CONF'
 
 chroot_execute "dpkg-reconfigure locales -f noninteractive"
 echo -e "LC_ALL=en_US.UTF-8\nLANG=en_US.UTF-8\n" >> "$c_zfs_mount_dir/etc/environment"
-chroot_execute "apt install -qq --yes keyboard-configuration console-setup"
 chroot_execute "dpkg-reconfigure keyboard-configuration -f noninteractive"
 chroot_execute "dpkg-reconfigure console-setup -f noninteractive"
 chroot_execute "setupcon"

hetzner-ubuntu20-zfs-setup.sh

@@ -2,9 +2,9 @@
 
 : <<'end_header_info'
 (c) Andrey Prokopenko job@terem.fr
-fully automatic script to install Debian 10 with ZFS root on Hetzner VPS
+fully automatic script to install Ubuntu 20 LTS with ZFS root on Hetzner VPS
 WARNING: all data on the disk will be destroyed
-How to use: add SSH key to the rescue console, set it OS to linux64, then press mount rescue and power sysle
+How to use: add SSH key to the rescue console, set it OS to linux64, then press "mount rescue and power cycle" button
 Next, connect via SSH to console, and run the script
 Answer script questions about desired hostname and ZFS ARC cache size
 To cope with network failures its higly recommended to run the script inside screen console
@@ -35,8 +35,8 @@ v_zfs_experimental=
 v_suitable_disks=()
 
 # Constants
-c_deb_packages_repo=http://deb.debian.org/debian
+c_deb_packages_repo=http://mirror.hetzner.de/ubuntu/packages
-c_deb_security_repo=http://deb.debian.org/debian-security/
+c_deb_security_repo=http://mirror.hetzner.de/ubuntu/security
 
 c_default_zfs_arc_max_mb=250
 c_default_bpool_tweaks="-o ashift=12 -O compression=lz4"
@@ -102,11 +102,11 @@ function display_intro_banner {
   print_step_info_header
 
   local dialog_message='Hello!
-This script will prepare the ZFS pools, then install and configure minimal Debian 10 with ZFS root on Hetzner hosting VPS instance
+This script will prepare the ZFS pools, then install and configure minimal Ubuntu 20 LTS with ZFS root on Hetzner hosting VPS instance
 The script with minimal changes may be used on any other hosting provider  supporting KVM virtualization and offering Debian-based rescue system.
 In order to stop the procedure, hit Esc twice during dialogs (excluding yes/no ones), or Ctrl+C while any operation is running.
 '
-  dialog --ascii-lines --msgbox "$dialog_message" 30 100
+  dialog --msgbox "$dialog_message" 30 100
 }
 
 function store_os_distro_information {
@@ -123,52 +123,16 @@ function check_prerequisites {
     echo 'This script must be run with administrative privileges!'
     exit 1
   fi
-#  if [[ ! -r /root/.ssh/authorized_keys ]]; then
+  if [[ ! -r /root/.ssh/authorized_keys ]]; then
-#    echo "SSH pubkey file is absent, please add it to the rescue system setting, then reboot into rescue system and run the script"
+    echo "SSH pubkey file is absent, please add it to the rescue system setting, then reboot into rescue system and run the script"
-#    exit 1
-#  fi
-#  if ! dpkg-query --showformat="\${Status}" -W dialog 2> /dev/null | grep -q "install ok installed"; then
-#    apt install --yes dialog
-#  fi
-  apt install --yes dialog software-properties-common wget debootstrap
-}
-
-function initial_load_debian_zed_cache {
-  chroot_execute "mkdir /etc/zfs/zfs-list.cache"
-  chroot_execute "touch /etc/zfs/zfs-list.cache/rpool"
-  chroot_execute "ln -s /usr/lib/zfs-linux/zed.d/history_event-zfs-list-cacher.sh /etc/zfs/zed.d/"
-
-  chroot_execute "zed -F &"
-
-  local success=0
-
-  if [[ ! -e /mnt/etc/zfs/zfs-list.cache/rpool ]] || [[ -e /mnt/etc/zfs/zfs-list.cache/rpool && (( $(ls -l /mnt/etc/zfs/zfs-list.cache/rpool 2> /dev/null | cut -d ' ' -f 5) == 0 )) ]]; then
-    chroot_execute "zfs set canmount=noauto rpool"
-
-    SECONDS=0
-
-    while (( SECONDS++ <= 120 )); do
-      if [[ -e /mnt/etc/zfs/zfs-list.cache/rpool ]] && (( "$(ls -l /mnt/etc/zfs/zfs-list.cache/rpool | cut -d ' ' -f 5)" > 0 )); then
-        success=1
-        break
-      else
-        sleep 1
-      fi
-    done
-  else
-    success=1
-  fi
-
-  if (( success != 1 )); then
-    echo "Fatal zed daemon error: the ZFS cache hasn't been updated by ZED!"
     exit 1
   fi
-
+  if ! dpkg-query --showformat="\${Status}" -W dialog 2> /dev/null | grep -q "install ok installed"; then
-  chroot_execute "pkill zed"
+    apt install --yes dialog
-
+  fi
-  sed -Ei 's|/mnt/?|/|g' /mnt/etc/zfs/zfs-list.cache/rpool
 }
 
+
 function find_suitable_disks {
   # shellcheck disable=SC2119
   print_step_info_header
@@ -211,7 +175,7 @@ LOG
 
 If you think this is a bug, please open an issue on https://github.com/terem42/zfs-hetzner-vm/issues, and attach the file `'"$c_disks_log"'`.
 '
-    dialog --ascii-lines --msgbox "$dialog_message" 30 100
+    dialog --msgbox "$dialog_message" 30 100
 
     exit 1
   fi
@@ -240,7 +204,7 @@ function select_disks {
 
 Devices with mounted partitions, cdroms, and removable devices are not displayed!
 "
-    mapfile -t v_selected_disks < <(dialog --ascii-lines --separate-output --checklist "$dialog_message" 30 100 $((${#menu_entries_option[@]} / 3)) "${menu_entries_option[@]}" 3>&1 1>&2 2>&3)
+    mapfile -t v_selected_disks < <(dialog --separate-output --checklist "$dialog_message" 30 100 $((${#menu_entries_option[@]} / 3)) "${menu_entries_option[@]}" 3>&1 1>&2 2>&3)
 
     if [[ ${#v_selected_disks[@]} -gt 0 ]]; then
       break
@@ -257,7 +221,7 @@ function ask_swap_size {
   local swap_size_invalid_message=
 
   while [[ ! $v_swap_size =~ ^[0-9]+$ ]]; do
-    v_swap_size=$(dialog --ascii-lines --inputbox "${swap_size_invalid_message}Enter the swap size in GiB (0 for no swap):" 30 100 2 3>&1 1>&2 2>&3)
+    v_swap_size=$(dialog --inputbox "${swap_size_invalid_message}Enter the swap size in GiB (0 for no swap):" 30 100 2 3>&1 1>&2 2>&3)
 
     swap_size_invalid_message="Invalid swap size! "
   done
@@ -272,7 +236,7 @@ function ask_free_tail_space {
   local tail_space_invalid_message=
 
   while [[ ! $v_free_tail_space =~ ^[0-9]+$ ]]; do
-    v_free_tail_space=$(dialog --ascii-lines --inputbox "${tail_space_invalid_message}Enter the space to leave at the end of each disk (0 for none):" 30 100 0 3>&1 1>&2 2>&3)
+    v_free_tail_space=$(dialog --inputbox "${tail_space_invalid_message}Enter the space to leave at the end of each disk (0 for none):" 30 100 0 3>&1 1>&2 2>&3)
 
     tail_space_invalid_message="Invalid size! "
   done
@@ -287,7 +251,7 @@ function ask_zfs_arc_max_size {
   local zfs_arc_max_invalid_message=
 
   while [[ ! $v_zfs_arc_max_mb =~ ^[0-9]+$ ]]; do
-    v_zfs_arc_max_mb=$(dialog --ascii-lines --inputbox "${zfs_arc_max_invalid_message}Enter ZFS ARC cache max size in Mb (minimum 64Mb, enter 0 for ZFS default value, the default will take up to 50% of memory):" 30 100 "$c_default_zfs_arc_max_mb" 3>&1 1>&2 2>&3)
+    v_zfs_arc_max_mb=$(dialog --inputbox "${zfs_arc_max_invalid_message}Enter ZFS ARC cache max size in Mb (minimum 64Mb, enter 0 for ZFS default value, the default will take up to 50% of memory):" 30 100 "$c_default_zfs_arc_max_mb" 3>&1 1>&2 2>&3)
 
     zfs_arc_max_invalid_message="Invalid size! "
   done
@@ -303,14 +267,14 @@ function ask_pool_names {
   local bpool_name_invalid_message=
 
   while [[ ! $v_bpool_name =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
-    v_bpool_name=$(dialog --ascii-lines --inputbox "${bpool_name_invalid_message}Insert the name for the boot pool" 30 100 bpool 3>&1 1>&2 2>&3)
+    v_bpool_name=$(dialog --inputbox "${bpool_name_invalid_message}Insert the name for the boot pool" 30 100 bpool 3>&1 1>&2 2>&3)
 
     bpool_name_invalid_message="Invalid pool name! "
   done
   local rpool_name_invalid_message=
 
   while [[ ! $v_rpool_name =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
-    v_rpool_name=$(dialog --ascii-lines --inputbox "${rpool_name_invalid_message}Insert the name for the root pool" 30 100 rpool 3>&1 1>&2 2>&3)
+    v_rpool_name=$(dialog --inputbox "${rpool_name_invalid_message}Insert the name for the root pool" 30 100 rpool 3>&1 1>&2 2>&3)
 
     rpool_name_invalid_message="Invalid pool name! "
   done
@@ -322,8 +286,8 @@ function ask_pool_tweaks {
   # shellcheck disable=SC2119
   print_step_info_header
 
-  v_bpool_tweaks=$(dialog --ascii-lines --inputbox "Insert the tweaks for the boot pool" 30 100 -- "$c_default_bpool_tweaks" 3>&1 1>&2 2>&3)
+  v_bpool_tweaks=$(dialog --inputbox "Insert the tweaks for the boot pool" 30 100 -- "$c_default_bpool_tweaks" 3>&1 1>&2 2>&3)
-  v_rpool_tweaks=$(dialog --ascii-lines --inputbox "Insert the tweaks for the root pool" 30 100 -- "$c_default_rpool_tweaks" 3>&1 1>&2 2>&3)
+  v_rpool_tweaks=$(dialog --inputbox "Insert the tweaks for the root pool" 30 100 -- "$c_default_rpool_tweaks" 3>&1 1>&2 2>&3)
 
   print_variables v_bpool_tweaks v_rpool_tweaks
 }
@@ -338,8 +302,8 @@ function ask_root_password {
   local password_repeat=-
 
   while [[ "$v_root_password" != "$password_repeat" || "$v_root_password" == "" ]]; do
-    v_root_password=$(dialog --ascii-lines --passwordbox "${password_invalid_message}Please enter the root account password (can't be empty):" 30 100 3>&1 1>&2 2>&3)
+    v_root_password=$(dialog --passwordbox "${password_invalid_message}Please enter the root account password (can't be empty):" 30 100 3>&1 1>&2 2>&3)
-    password_repeat=$(dialog --ascii-lines --passwordbox "Please repeat the password:" 30 100 3>&1 1>&2 2>&3)
+    password_repeat=$(dialog --passwordbox "Please repeat the password:" 30 100 3>&1 1>&2 2>&3)
 
     password_invalid_message="Passphrase empty, or not matching! "
   done
@@ -349,7 +313,7 @@ function ask_root_password {
 function ask_encryption {
   print_step_info_header
 
-  if dialog --ascii-lines --yesno 'Do you want to encrypt the root pool?' 30 100; then
+  if dialog --yesno 'Do you want to encrypt the root pool?' 30 100; then
     v_encrypt_rpool=1
   fi
   set +x
@@ -357,8 +321,8 @@ function ask_encryption {
     local passphrase_invalid_message=
     local passphrase_repeat=-
     while [[ "$v_passphrase" != "$passphrase_repeat" || ${#v_passphrase} -lt 8 ]]; do
-      v_passphrase=$(dialog --ascii-lines --passwordbox "${passphrase_invalid_message}Please enter the passphrase for the root pool (8 chars min.):" 30 100 3>&1 1>&2 2>&3)
+      v_passphrase=$(dialog --passwordbox "${passphrase_invalid_message}Please enter the passphrase for the root pool (8 chars min.):" 30 100 3>&1 1>&2 2>&3)
-      passphrase_repeat=$(dialog --ascii-lines --passwordbox "Please repeat the passphrase:" 30 100 3>&1 1>&2 2>&3)
+      passphrase_repeat=$(dialog --passwordbox "Please repeat the passphrase:" 30 100 3>&1 1>&2 2>&3)
 
       passphrase_invalid_message="Passphrase too short, or not matching! "
     done
@@ -369,7 +333,7 @@ function ask_encryption {
 function ask_zfs_experimental {
   print_step_info_header
 
-  if dialog --ascii-lines --yesno 'Do you want to use experimental zfs module build?' 30 100; then
+  if dialog --yesno 'Do you want to use experimental zfs module build?' 30 100; then
     v_zfs_experimental=1
   fi
 }
@@ -381,7 +345,7 @@ function ask_hostname {
   local hostname_invalid_message=
 
   while [[ ! $v_hostname =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
-    v_hostname=$(dialog --ascii-lines --inputbox "${hostname_invalid_message}Set the host name" 30 100 "$c_default_hostname" 3>&1 1>&2 2>&3)
+    v_hostname=$(dialog --inputbox "${hostname_invalid_message}Set the host name" 30 100 "$c_default_hostname" 3>&1 1>&2 2>&3)
 
     hostname_invalid_message="Invalid host name! "
   done
@@ -391,7 +355,9 @@ function ask_hostname {
 
 function determine_kernel_variant {
   if dmidecode | grep -q vServer; then
-    v_kernel_variant="-cloud"
+    v_kernel_variant="-virtual"
+  else
+    v_kernel_variant="-generic"
   fi
 }
 
@@ -451,13 +417,14 @@ function unmount_and_export_fs {
 
 #################### MAIN ################################
 export LC_ALL=en_US.UTF-8
+export NCURSES_NO_UTF8_ACS=1
 
 check_prerequisites
 
-activate_debug
-
 display_intro_banner
 
+activate_debug
+
 find_suitable_disks
 
 select_disks
@@ -490,15 +457,23 @@ for kver in $(find /lib/modules/* -maxdepth 0 -type d | grep -v "$(uname -r)" |
   apt purge --yes "linux-image-$kver"
 done
 
-echo "======= installing zfs stable on live system =========="
+echo "======= installing zfs on rescue system =========="
-wget -O - https://apt.terem.fr/apt_pub.gpg | apt-key add -
+  echo "zfs-dkms zfs-dkms/note-incompatible-licenses note true" | debconf-set-selections
-add-apt-repository 'deb [arch=amd64] http://apt.terem.fr/public zfs-debian main'
+
-apt update
+  cd "$(mktemp -d)"
-echo 'zfs-dkms zfs-dkms/note-incompatible-licenses note true' | debconf-set-selections
+  wget "$(curl -Ls https://api.github.com/repos/openzfs/zfs/releases/latest| grep "browser_download_url.*tar.gz"|grep -E "tar.gz\"$"| cut -d '"' -f 4)"
-apt install --yes libelf-dev
+  apt update
-apt install -t zfs-debian --yes zfs-dkms zfsutils-linux
+  apt install libssl-dev uuid-dev zlib1g-dev libblkid-dev -y
-modprobe zfs
+  tar xfv zfs*.tar.gz
-zfs --version
+  rm *.tar.gz
+  cd zfs*
+  ./configure
+  make -j "$(nproc)"
+  make install
+  ldconfig
+  modprobe zfs
+
+  zfs --version
 
 echo "======= partitioning the disk =========="
 
@@ -509,7 +484,7 @@ echo "======= partitioning the disk =========="
   fi
 
   for selected_disk in "${v_selected_disks[@]}"; do
-    wipefs --all "$selected_disk"
+    wipefs --all --force "$selected_disk"
     sgdisk -a1 -n1:24K:+1000K            -t1:EF02 "$selected_disk"
     sgdisk -n2:0:+512M                   -t2:BF01 "$selected_disk" # Boot pool
     sgdisk -n3:0:"$tail_space_parameter" -t3:BF01 "$selected_disk" # Root pool
@@ -540,7 +515,6 @@ echo "======= create zfs pools and datasets =========="
 
 zpool create \
   $v_bpool_tweaks -O canmount=off -O devices=off \
-  -o cachefile=/etc/zfs/zpool.cache \
   -O mountpoint=/boot -R $c_zfs_mount_dir -f \
   $v_bpool_name $pools_mirror_option "${bpool_disks_partitions[@]}"
 
@@ -548,14 +522,13 @@ echo -n "$v_passphrase" | zpool create \
   $v_rpool_tweaks \
   "${encryption_options[@]}" \
   -O mountpoint=/ -R $c_zfs_mount_dir -f \
-  -o cachefile=/etc/zfs/zpool.cache \
   $v_rpool_name $pools_mirror_option "${rpool_disks_partitions[@]}"
 
 zfs create -o canmount=off -o mountpoint=none "$v_rpool_name/ROOT"
 zfs create -o canmount=off -o mountpoint=none "$v_bpool_name/BOOT"
 
-zfs create -o canmount=noauto -o mountpoint=/ "$v_rpool_name/ROOT/debian"
+zfs create -o canmount=noauto -o mountpoint=/ "$v_rpool_name/ROOT/ubuntu"
-zfs mount "$v_rpool_name/ROOT/debian"
+zfs mount "$v_rpool_name/ROOT/ubuntu"
 
 zfs create -o canmount=noauto -o mountpoint=/boot "$v_bpool_name/BOOT/ubuntu"
 zfs mount "$v_bpool_name/BOOT/ubuntu"
@@ -588,12 +561,12 @@ if [[ $v_swap_size -gt 0 ]]; then
     "$v_rpool_name/swap"
 
   udevadm settle
- 
+
   mkswap -f "/dev/zvol/$v_rpool_name/swap"
 fi
 
 echo "======= setting up initial system packages =========="
-debootstrap --arch=amd64 bullseye "$c_zfs_mount_dir" "$c_deb_packages_repo" 
+debootstrap --arch=amd64 focal "$c_zfs_mount_dir" "$c_deb_packages_repo"
 
 zfs set devices=off "$v_rpool_name"
 
@@ -614,7 +587,7 @@ ff02::2 ip6-allrouters
 ff02::3 ip6-allhosts
 CONF
 
-ip6addr=$(ip -6 a s | grep -E "inet6.+scope.+link" | sed -nE 's/.+inet6\s(([0-9a-z]{4,4}:{0,2}){5,5}\/[0-9]{2,2}).+/\1/p')
+ip6addr_prefix=$(ip -6 a s | grep -E "inet6.+global" | sed -nE 's/.+inet6\s(([0-9a-z]{1,4}:){4,4}).+/\1/p')
 
 cat <<CONF > /mnt/etc/systemd/network/10-eth0.network
 [Match]
@@ -622,14 +595,21 @@ Name=eth0
 
 [Network]
 DHCP=ipv4
-
+Address=${ip6addr_prefix}:1/64
-Address=${ip6addr}
 Gateway=fe80::1
 CONF
 
 chroot_execute "systemctl enable systemd-networkd.service"
 
 
+mkdir -p "$c_zfs_mount_dir/etc/cloud/cloud.cfg.d/"
+cat > "$c_zfs_mount_dir/etc/cloud/cloud.cfg.d/99-disable-network-config.cfg" <<CONF
+network:
+  config: disabled
+CONF
+
+rm -rf $c_zfs_mount_dir/etc/network/interfaces.d/50-cloud-init.cfg
+
 cp /etc/resolv.conf $c_zfs_mount_dir/etc/resolv.conf
 
 echo "======= preparing the jail for chroot =========="
@@ -639,16 +619,17 @@ done
 
 echo "======= setting apt repos =========="
 cat > "$c_zfs_mount_dir/etc/apt/sources.list" <<CONF
-deb $c_deb_packages_repo bullseye main contrib non-free
+deb [arch=i386,amd64] $c_deb_packages_repo focal main restricted
-deb $c_deb_packages_repo bullseye-updates main contrib non-free
+deb [arch=i386,amd64] $c_deb_packages_repo focal-updates main restricted
-deb $c_deb_security_repo bullseye-security main contrib non-free
+deb [arch=i386,amd64] $c_deb_packages_repo focal-backports main restricted
-deb $c_deb_packages_repo bullseye-backports main contrib non-free
+deb [arch=i386,amd64] $c_deb_packages_repo focal universe
+deb [arch=i386,amd64] $c_deb_security_repo focal-security main restricted
 CONF
 
 chroot_execute "apt update"
 
 echo "======= setting locale, console and language =========="
-chroot_execute "DEBIAN_FRONTEND=noninteractive apt install --yes -qq locales debconf-i18n apt-utils keyboard-configuration console-setup"
+chroot_execute "apt install --yes -qq locales debconf-i18n apt-utils keyboard-configuration console-setup"
 sed -i 's/# en_US.UTF-8/en_US.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
 sed -i 's/# fr_FR.UTF-8/fr_FR.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
 sed -i 's/# fr_FR.UTF-8/fr_FR.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
@@ -658,15 +639,15 @@ sed -i 's/# de_DE.UTF-8/de_DE.UTF-8/' "$c_zfs_mount_dir/etc/locale.gen"
 chroot_execute 'cat <<CONF | debconf-set-selections
 locales locales/default_environment_locale      select  en_US.UTF-8
 keyboard-configuration  keyboard-configuration/store_defaults_in_debconf_db     boolean true
-keyboard-configuration  keyboard-configuration/variant  select  English
+keyboard-configuration  keyboard-configuration/variant  select  German
 keyboard-configuration  keyboard-configuration/unsupported_layout       boolean true
 keyboard-configuration  keyboard-configuration/modelcode        string  pc105
 keyboard-configuration  keyboard-configuration/unsupported_config_layout        boolean true
-keyboard-configuration  keyboard-configuration/layout   select  English
+keyboard-configuration  keyboard-configuration/layout   select  German
-keyboard-configuration  keyboard-configuration/layoutcode       string  en
+keyboard-configuration  keyboard-configuration/layoutcode       string  de
 keyboard-configuration  keyboard-configuration/optionscode      string
 keyboard-configuration  keyboard-configuration/toggle   select  No toggling
-keyboard-configuration  keyboard-configuration/xkb-keymap       select  en
+keyboard-configuration  keyboard-configuration/xkb-keymap       select  de
 keyboard-configuration  keyboard-configuration/switch   select  No temporary switch
 keyboard-configuration  keyboard-configuration/unsupported_config_options       boolean true
 keyboard-configuration  keyboard-configuration/ctrl_alt_bksp    boolean false
@@ -698,30 +679,43 @@ chroot_execute "rm -f /etc/localtime /etc/timezone"
 chroot_execute "dpkg-reconfigure tzdata -f noninteractive "
 
 echo "======= installing latest kernel============="
-chroot_execute "apt install --yes -t bullseye-backports linux-image${v_kernel_variant}-amd64 linux-headers${v_kernel_variant}-amd64"
+chroot_execute "DEBIAN_FRONTEND=noninteractive apt install --yes linux-headers${v_kernel_variant}-hwe-18.04 linux-image${v_kernel_variant}-hwe-18.04"
+if [[ $v_kernel_variant == "-virtual" ]]; then
+  # linux-image-extra is only available for virtual hosts
+  chroot_execute "DEBIAN_FRONTEND=noninteractive apt install --yes linux-image-extra-virtual-hwe-20.04"
+fi
+
 
 echo "======= installing aux packages =========="
-chroot_execute "apt install --yes man wget curl software-properties-common nano htop gnupg"
+chroot_execute "apt install --yes man-db wget curl software-properties-common nano htop gnupg"
+chroot_execute "systemctl disable thermald"
 
 echo "======= installing zfs packages =========="
-chroot_execute "bash -c \"echo 'zfs-dkms zfs-dkms/note-incompatible-licenses note true' | debconf-set-selections\""
 if [[ $v_zfs_experimental == "1" ]]; then
-  chroot_execute "apt install software-properties-common"
+  chroot_execute "wget -O - https://terem42.github.io/zfs-debian/apt_pub.gpg | apt-key add -"
-  chroot_execute "wget -O - https://apt.terem.fr/apt_pub.gpg | apt-key add -"
+  chroot_execute "add-apt-repository 'deb https://terem42.github.io/zfs-debian/public zfs-debian-experimental main'"
-  chroot_execute "add-apt-repository 'deb [arch=amd64] http://apt.terem.fr/public zfs-debian main'"
   chroot_execute "apt update"
-  chroot_execute "apt install -t zfs-debian --yes zfs-initramfs zfs-dkms zfsutils-linux"
+else
+  echo "======= installing OpenZFS 2.0 stable package from Debian 10 backports zfs packages =========="
+  chroot_execute "apt-key adv --recv-key --keyserver keyserver.ubuntu.com 648ACFD622F3D138"
+  chroot_execute "sudo apt-key adv --recv-key --keyserver keyserver.ubuntu.com 0E98404D386FA1D9"
+  chroot_execute "add-apt-repository 'deb http://deb.debian.org/debian buster-backports main contrib non-free'"
+  chroot_execute "apt install -t buster-backports --yes zfs-dkms zfsutils-linux zfs-initramfs"
+  chroot_execute "add-apt-repository -r 'deb http://deb.debian.org/debian buster-backports main contrib non-free'"
+fi
+chroot_execute 'echo "zfs-dkms zfs-dkms/note-incompatible-licenses note true" | debconf-set-selections'
+
+if [[ $v_zfs_experimental == "1" ]]; then
+  chroot_execute "apt install -t zfs-debian-experimental --yes zfs-initramfs zfs-dkms zfsutils-linux"
 else
   chroot_execute "apt install --yes zfs-initramfs zfs-dkms zfsutils-linux"
 fi
-
 echo "======= installing OpenSSH and network tooling =========="
 chroot_execute "apt install --yes openssh-server net-tools"
 
 echo "======= setup OpenSSH  =========="
 mkdir -p "$c_zfs_mount_dir/root/.ssh/"
-wget https://raw.githubusercontent.com/terem42/zfs-hetzner-vm/vmtest/authorized_keys -O "$c_zfs_mount_dir/root/.ssh/authorized_keys"
+cp /root/.ssh/authorized_keys "$c_zfs_mount_dir/root/.ssh/authorized_keys"
-#cp /root/.ssh/authorized_keys "$c_zfs_mount_dir/root/.ssh/authorized_keys"
 sed -i 's/#PasswordAuthentication yes/PasswordAuthentication no/g' "$c_zfs_mount_dir/etc/ssh/sshd_config"
 sed -i 's/#PubkeyAuthentication yes/PubkeyAuthentication yes/g' "$c_zfs_mount_dir/etc/ssh/sshd_config"
 chroot_execute "rm /etc/ssh/ssh_host_*"
@@ -730,9 +724,25 @@ chroot_execute "dpkg-reconfigure openssh-server -f noninteractive"
 echo "======= set root password =========="
 chroot_execute "echo root:$(printf "%q" "$v_root_password") | chpasswd"
 
-echo "======= setting up zfs cache =========="
+echo "======= setting up zfs services =========="
+chroot_execute "cat > /etc/systemd/system/zfs-import-bpool.service <<UNIT
+[Unit]
+DefaultDependencies=no
+Before=zfs-import-scan.service
+Before=zfs-import-cache.service
 
-cp /etc/zfs/zpool.cache "$c_zfs_mount_dir/etc/zfs/zpool.cache"
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStartPre=/bin/sh -c '[ -f /etc/zfs/zpool.cache ] && mv /etc/zfs/zpool.cache /etc/zfs/preboot_zpool.cache || true'
+ExecStart=/sbin/zpool import -N -o cachefile=none $v_bpool_name
+ExecStartPost=/bin/sh -c '[ -f /etc/zfs/preboot_zpool.cache ] && mv /etc/zfs/preboot_zpool.cache /etc/zfs/zpool.cache || true'
+
+[Install]
+WantedBy=zfs-import.target
+UNIT"
+
+chroot_execute "systemctl enable zfs-import-bpool.service"
 
 echo "========setting up zfs module parameters========"
 chroot_execute "echo options zfs zfs_arc_max=$((v_zfs_arc_max_mb * 1024 * 1024)) >> /etc/modprobe.d/zfs.conf"
@@ -744,7 +754,7 @@ chroot_execute "grub-install ${v_selected_disks[0]}"
 
 chroot_execute "sed -i 's/#GRUB_TERMINAL=console/GRUB_TERMINAL=console/g' /etc/default/grub"
 chroot_execute "sed -i 's|GRUB_CMDLINE_LINUX_DEFAULT=.*|GRUB_CMDLINE_LINUX_DEFAULT=\"net.ifnames=0\"|' /etc/default/grub"
-chroot_execute "sed -i 's|GRUB_CMDLINE_LINUX=\"\"|GRUB_CMDLINE_LINUX=\"root=ZFS=rpool/ROOT/debian\"|g' /etc/default/grub"
+chroot_execute "sed -i 's|GRUB_CMDLINE_LINUX=\"\"|GRUB_CMDLINE_LINUX=\"root=ZFS=rpool/ROOT/ubuntu\"|g' /etc/default/grub"
 
 chroot_execute "sed -i 's/quiet//g' /etc/default/grub"
 chroot_execute "sed -i 's/splash//g' /etc/default/grub"
@@ -756,11 +766,9 @@ done
 
 if [[ $v_encrypt_rpool == "1" ]]; then
   echo "=========set up dropbear=============="
-
   chroot_execute "apt install --yes dropbear-initramfs"
 
-  cp "$c_zfs_mount_dir/root/.ssh/authorized_keys" "$c_zfs_mount_dir/etc/dropbear-initramfs/authorized_keys"
+  cp /root/.ssh/authorized_keys "$c_zfs_mount_dir/etc/dropbear-initramfs/authorized_keys"
-  #cp /root/.ssh/authorized_keys "$c_zfs_mount_dir/etc/dropbear-initramfs/authorized_keys"
 
   cp "$c_zfs_mount_dir/etc/ssh/ssh_host_rsa_key" "$c_zfs_mount_dir/etc/ssh/ssh_host_rsa_key_temp"
   chroot_execute "ssh-keygen -p -i -m pem -N '' -f /etc/ssh/ssh_host_rsa_key_temp"
@@ -774,7 +782,19 @@ if [[ $v_encrypt_rpool == "1" ]]; then
   rm -rf "$c_zfs_mount_dir/etc/ssh/ssh_host_ecdsa_key_temp"
 
   rm -rf "$c_zfs_mount_dir/etc/dropbear-initramfs/dropbear_dss_host_key"
-fi 
+
+  cd "$c_zfs_mount_dir/root"
+  wget http://ftp.de.debian.org/debian/pool/main/libt/libtommath/libtommath1_1.1.0-3_amd64.deb
+  wget http://ftp.de.debian.org/debian/pool/main/d/dropbear/dropbear-bin_2018.76-5_amd64.deb
+  wget http://ftp.de.debian.org/debian/pool/main/d/dropbear/dropbear-initramfs_2018.76-5_all.deb
+
+  chroot_execute "dpkg -i /root/libtommath1_1.1.0-3_amd64.deb"
+  chroot_execute "dpkg -i /root/dropbear-bin_2018.76-5_amd64.deb"
+  chroot_execute "dpkg -i /root/dropbear-initramfs_2018.76-5_all.deb"
+
+  rm $c_zfs_mount_dir/root/*.deb
+  cd /root
+fi
 
 echo "============setup root prompt============"
 cat > "$c_zfs_mount_dir/root/.bashrc" <<CONF
@@ -787,8 +807,33 @@ CONF
 echo "========running packages upgrade==========="
 chroot_execute "apt upgrade --yes"
 
-#echo "===========add static route to initramfs via hook to add default routes due to  initramfs DHCP bug ========="
+echo "===========add static route to initramfs via hook to add default routes due to Ubuntu initramfs DHCP bug ========="
-# removed
+mkdir -p "$c_zfs_mount_dir/usr/share/initramfs-tools/scripts/init-premount"
+cat > "$c_zfs_mount_dir/usr/share/initramfs-tools/scripts/init-premount/static-route" <<'CONF'
+#!/bin/sh
+PREREQ=""
+prereqs()
+{
+    echo "$PREREQ"
+}
+
+case $1 in
+prereqs)
+    prereqs
+    exit 0
+    ;;
+esac
+
+. /scripts/functions
+# Begin real processing below this line
+
+configure_networking
+
+ip route add 172.31.1.1/255.255.255.255 dev ens3
+ip route add default via 172.31.1.1 dev ens3
+CONF
+
+chmod 755 "$c_zfs_mount_dir/usr/share/initramfs-tools/scripts/init-premount/static-route"
 
 echo "======= update initramfs =========="
 chroot_execute "update-initramfs -u -k all"
@@ -797,15 +842,12 @@ echo "======= update grub =========="
 chroot_execute "update-grub"
 
 echo "======= setting up zed =========="
-if [[ $v_zfs_experimental == "1" ]]; then
+
-  chroot_execute "zfs set canmount=noauto rpool"
+chroot_execute "zfs set canmount=noauto rpool"
-else
-  initial_load_debian_zed_cache
-fi
 
 echo "======= setting mountpoints =========="
 chroot_execute "zfs set mountpoint=legacy $v_bpool_name/BOOT/ubuntu"
-chroot_execute "echo $v_bpool_name/BOOT/ubuntu /boot zfs nodev,relatime,x-systemd.requires=zfs-mount.service,x-systemd.device-timeout=10 0 0 > /etc/fstab"
+chroot_execute "echo $v_bpool_name/BOOT/ubuntu /boot zfs nodev,relatime,x-systemd.requires=zfs-import-bpool.service 0 0 > /etc/fstab"
 
 chroot_execute "zfs set mountpoint=legacy $v_rpool_name/var/log"
 chroot_execute "echo $v_rpool_name/var/log /var/log zfs nodev,relatime 0 0 >> /etc/fstab"