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homelab/active/systemd_borg/backup.sh.j2
ducoterra ab2b033c54
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wyoming, borg, grayjay, oh my
2025-05-04 02:34:10 -04:00

92 lines
2.7 KiB
Django/Jinja

#!/bin/sh
{% for service in stop_services %}
systemctl stop {{ service }}
{% endfor %}
{% for service in stop_user_services %}
systemctl --user --machine={{ systemd_user }}@.host stop {{ service }}
{% endfor %}
# Setting this, so the repo does not need to be given on the commandline:
export BORG_REPO={{ borg_user }}@{{ borg_host }}:{{ repo_name }}
# See the section "Passphrase notes" for more infos.
export BORG_PASSPHRASE={{ borg_passphrase }}
# some helpers and error handling:
info() { printf "\n%s %s\n\n" "$( date )" "$*" >&2; }
trap 'echo $( date ) Backup interrupted >&2; exit 2' INT TERM
info "Starting backup"
# Backup the most important directories into an archive named after
# the machine this script is currently running on:
borg create \
--verbose \
--filter AME \
--list \
--stats \
--show-rc \
--compression lz4 \
--exclude-caches \
--exclude 'home/*/.cache/*' \
--exclude 'var/tmp/*' \
{% for dir in exclude_dirs %}
--exclude '{{ dir }}' \
{% endfor %}
\
::'{hostname}-{now}' \
{% for dir in backup_dirs %}
{{ dir }} \
{% endfor %}
backup_exit=$?
{% for service in stop_services %}
systemctl start {{ service }}
{% endfor %}
{% for service in stop_user_services %}
systemctl --user --machine={{ systemd_user }}@.host start {{ service }}
{% endfor %}
info "Pruning repository"
# Use the `prune` subcommand to maintain 7 daily, 4 weekly and 6 monthly
# archives of THIS machine. The '{hostname}-*' matching is very important to
# limit prune's operation to this machine's archives and not apply to
# other machines' archives also:
borg prune \
--list \
--glob-archives '{hostname}-*' \
--show-rc \
--keep-daily {{ keep_daily }} \
--keep-weekly {{ keep_weekly }} \
--keep-monthly {{ keep_monthly }} \
prune_exit=$?
# actually free repo disk space by compacting segments
info "Compacting repository"
borg compact
compact_exit=$?
# use highest exit code as global exit code
global_exit=$(( backup_exit > prune_exit ? backup_exit : prune_exit ))
global_exit=$(( compact_exit > global_exit ? compact_exit : global_exit ))
if [ ${global_exit} -eq 0 ]; then
info "Backup, Prune, and Compact finished successfully"
elif [ ${global_exit} -eq 1 ]; then
info "Backup, Prune, and/or Compact finished with warnings"
else
info "Backup, Prune, and/or Compact finished with errors"
fi
exit ${global_exit}