-#!/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 != /debianbullseye_bootstrap ]]; then
- # no need to reboot if we actually want to boot into this os.
- echo "last_boot not debianbullseye_bootstrap, rebooting"
- reboot
- fi
-esac
iankelling.org / git / automated-distro-installer / commitdiff