further bookworm support

[automated-distro-installer] / fai / config / files / root / fai-check / VOL_BOOKWORM_BOOTSTRAP

diff --git a/fai/config/files/root/fai-check/VOL_BOOKWORM_BOOTSTRAP b/fai/config/files/root/fai-check/VOL_BOOKWORM_BOOTSTRAP
new file mode 100755 (executable)
index 0000000..ebbedbe
--- /dev/null
+++ b/fai/config/files/root/fai-check/VOL_BOOKWORM_BOOTSTRAP
@@ -0,0 +1,128 @@
+#!/bin/bash
+
+set -eE -o pipefail
+trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
+
+#set -x
+
+usage() {
+  cat <<EOF
+Usage: ${0##*/} [OPTION] [HOST]
+If grub var set, act like pxe rom and pxe-kexec to faiserver
+
+-f|--force  do kexec if we can reach faiserver
+-h|--help  Print help and exit.
+
+Note: Uses GNU getopt options parsing style
+EOF
+  exit $1
+}
+
+
+
+# Keep it short so we don't delay too much wnen we don't have networking.
+# In practice, on my home network, on an x200, it took 15 seconds, so
+# give it an extra 10 seconds, which seems fairly short as I write this.
+NETWORK_TIMOUT_SECS=25
+did_fai_check=false
+
+m() { printf "%s\n" "$*";  "$@"; }
+
+try-kexec() {
+  deadline=$(( `date +%s` + NETWORK_TIMOUT_SECS ))
+  while ! timeout -s 9 3 nc -zu $faiserver 69; do
+    if (( `date +%s` > deadline )); then
+      echo "fai-check: hit $NETWORK_TIMOUT_SECS s tftp server timeout"
+      return 0
+    fi
+    sleep 1
+  done
+  m pxe-kexec -n --ignore-whitelist -l fai-generated $faiserver ||:
+}
+
+force=false
+case $1 in
+  -h|--help)
+    usage
+    ;;
+  -f|--force)
+    force=true
+    shift
+    ;;
+esac
+
+faiserver=${1:-faiserver.b8.nz}
+
+
+if $force; then
+  try-kexec
+  exit
+fi
+
+# on one machine, I could do this:
+# dmidecode -t system | grep -F "Version: ThinkPad X200"
+# however, on another, the version field just says invalid data.
+# todo: figure out some better way to check if we are on
+# an x200.
+
+if ! dmidecode | grep -i thinkpad &>/dev/null; then
+  echo "not x200, exiting"
+  exit 0
+fi
+
+first=true
+for dev in $(btrfs fi show / | sed -rn 's#^\s*devid\s.*\s([^0-9 ]+)\S+$#\1#p' \
+               |sort); do
+  echo dev=$dev
+  found=false
+  # Decide which is my grub_ext partition. see partition.DEFAULT file
+  # for details. currently it is 4
+  for (( i=4; i<=7; i++ )); do
+    if [[ $(blockdev --getsize64 ${dev}$i) == 8388608 ]]; then
+      grub_extn=${dev}$i
+      found=true
+      echo grub_extn=$grub_extn
+      break
+    fi
+  done
+  if ! $found; then
+    echo "$0: error: failed to find grub_ext partition."
+    exit 1
+  fi
+  m mount $grub_extn /mnt
+  if $first; then
+    if [[ -e /mnt/grubenv ]]; then
+      m grub-editenv /mnt/grubenv list
+      source <(grub-editenv /mnt/grubenv list)
+    fi
+    first=false
+    # we could just as well check if last_boot != /debianbullseye_bootstrap
+    # the intent with this one is just a little clearer.
+    if [[ $did_fai_check == true ]]; then
+      m grub-editenv /mnt/grubenv set did_fai_check=os_true
+      # our service does not wait for network-online.target,
+      # because it will wait for too long when we don't have a network
+      # connection. So, we wait for 10 seconds.
+      # ref: https://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/
+      try-kexec ||:
+    fi
+  else
+    # we make sure there is only 1 grubenv,
+    # so grub can just find the first one, in whatever order
+    # if looks at them, which may not be the same as us.
+    # If the disk dies, we just lose the default boot option,
+    # we will have to do manual steps to replace it anyways.
+    m rm -f /mnt/gruvenv
+  fi
+  m umount /mnt
+done
+
+# the check for last_boot is not needed afaik, just sanity check.
+case $did_fai_check in
+  true|os_true)
+    if [[ $last_boot != /debian*_bootstrap ]]; then
+      # no need to reboot if we actually want to boot into this os.
+      echo "last_boot=$last_boot not debian*_bootstrap, rebooting"
+      reboot
+    fi
+esac