OpenBSD 7.1

cat << 'EOF' > /root/upgrade_to_71.sh
#!/usr/bin/env bash
#
# OpenBSD Upgrade Script - Upgrade from 7.0 to 7.1
#
# Copyright (c) 2022 StockerSolutions / @stoege
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

# Functions
h1() {
cat << EOS

############################################################
##
## $1
##
############################################################

EOS
}

h2() {
cat << EOS

########################################
# $1
########################################

EOS
}

h6() {
cat << EOS
# $1
EOS
}

# Vars
ver="7.1"

# Version
version="v0.1 / 2022-04.20 / Stoege"
comment="Let's Upgrade to $ver"

# Path, Helpers, Hello
opwd=$(pwd); cd $(dirname $0); h1 "$comment $version"

check_diskfree () {

  h1 "check if 1.1G Disk Free"

  FREE=$(df -k /usr |awk '/usr/{ print $4 }')
  if [[ $FREE -lt 1150000 ]]; then

    FREE=$((FREE / 1024))

    echo
    h6 "you have ${FREE} MB free Diskspace at /usr. Need at least 1.1GB! Exit ..."

    h2 "you may wanna remove GENERIC Kernel Stuff?"
    h6 "rm -rf /usr/share/relink/kernel"

    echo
    exit 1

  else

    echo
    echo "more than 1.1 GBs free! Let's proceed ..."
    echo

  fi;

}


prepare () {

  h1 "let's update bsd.rd"

  ftp -o /bsd.rd "https://cdn.openbsd.org/pub/OpenBSD/${ver}/amd64/bsd.rd"

  h1 "let's upgrade to ${ver} ..."

}

download() {

  local _response=$(sysupgrade -n)

  if [[ $_response == *reboot ]]; then
    h1 "Installed! Let's reboot ..."
    rm /home/_sysupgrade/{xf,xs}*
  else
    h1 "Nothing todo ..."
  fi

}

install() {
  reboot
}

postwork() {

  h1 "let's do some postwork after upgrade to ${ver} ..."

  h2 "make dev"
  cd /dev
  ./MAKEDEV all

  h2 "install boot"
  _boot=$(mount |awk -F'[/ ]' '/ on \/ / {print $3}')
  installboot ${_boot%?}

  h2 "sysmerge"
  sysmerge |tee -a /var/log/upgrade_${ver}.log

  h2 "fw_update"
  fw_update -v
  fw_update -v |tee -a /var/log/upgrade_${ver}.log

  h2 "syspatch"
  syspatch |tee -a /var/log/upgrade_${ver}.log

  h2 "pkg_add -Vu"
  pkg_add -Vu |tee -a /var/log/upgrade_${ver}.log

  h2 "remove python 3.8"
  pkg_delete python--%3.8

  h2 "find scripts with python3.8 @ shebang"
  file /usr/{,local}/{s,}bin/* |grep -i python3.8

  h2 "python 3.9 now default"
  cd /usr/local/bin/
  ln -sf python3.9 python3
  ln -sf python3.9-config python3-config

  h2 "pkg_delete -a"
  pkg_delete -a |tee -a /var/log/upgrade_${ver}.log

  h2 "updatedb &"
  /usr/libexec/locate.updatedb &

}

# Main
_ver=$(uname -r)

if [ "$_ver" == "7.0" ]; then

  check_diskfree
  prepare
  download
  install

elif [ "$_ver" == "${ver}" ]; then

  postwork

fi

exit 0
EOF

chmod u+x /root/upgrade_to_71.sh

/root/upgrade_to_71.sh

ftp -o /tmp/install71.iso http://cdn.openbsd.org/pub/OpenBSD/7.1/amd64/install71.iso

vnconfig vnd0 /tmp/install71.iso
mount -t cd9660 /dev/vnd0c /mnt

cp /mnt/7.1/amd64/* /home/_sysupgrade/