100 lines
3.2 KiB
Bash
Executable file
100 lines
3.2 KiB
Bash
Executable file
#!/bin/bash
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# Version: 0.1.0
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# Copyright (c) 2023:
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# Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
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# Licensed under the terms of the GNU General Public License version 3.
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# Base configuration.
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BACKUP_MOUNTPOINT="/localdata"
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RSYNC_OPTIONS=( '-a' '-H' '-A' '--timeout=300' '--partial' '--partial-dir=.rsync-tmp' '--delete-delay' '--delay-updates' )
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RSYNC_OPTIONS_VERBOSE=( '--verbose' '--stats' '--human-readable' )
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RSYNC_LOG="/tmp/${BASH_SOURCE[0]##*/}-$$.log"
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# Sanity checks.
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(( $# != 1 )) || [[ -z "$1" ]] || [[ "$1" =~ ^(-h|-help|--help)$ ]] && {
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printf "%s: %s <%s>\\n" "Usage" "${BASH_SOURCE[0]}" "backup definition" >&2
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exit 1
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}
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# Get backup definition specific configuration.
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case "$1" in
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'gv0')
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BACKUP_DESTDIR="$BACKUP_MOUNTPOINT/backups/gv0"
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RSYNC_SOURCE="/storage/gv0/" # The / on the end is required.
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RSYNC_FILTER=()
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;;
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'mirrors')
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BACKUP_DESTDIR="$BACKUP_MOUNTPOINT/backups/mirrors"
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RSYNC_SOURCE="slackware.uk::mirrors/" # The / on the end is required.
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RSYNC_FILTER=( \
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'--include=/absolute/***' \
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'--include=/csb/***' \
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'--include=/cumulative/***' \
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'--include=/freeslack/***' \
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'--include=/gfs/***' \
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'--include=/microlinux/***' \
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'--include=/msb/***' \
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'--include=/sarpi/***' \
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'--include=/slackonly/***' \
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'--include=/slackvirt/***' \
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'--include=/slackware/' \
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'--include=/slackware/slackware-pre-1.0-beta/***' \
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'--include=/slackware/slackware-1.01/***' \
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'--include=/slackwarearm/***' \
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'--include=/slacky/***' \
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'--include=/slaxbmc/***' \
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'--include=/slint/***' \
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'--include=/sls/***' \
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'--include=/studioware/***' \
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'--exclude=*' )
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RSYNC_OPTIONS+=( '--contimeout=30' )
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;;
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*)
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printf "%s: %s: %s\\n" "${BASH_SOURCE[0]##*/}" "$1" "unknown backup definition" >&2
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exit 1
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;;
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esac
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# Only allow one copy of the script to run at any time.
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# shellcheck disable=SC2154
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if [[ "$FLOCK" != "$0" ]]; then
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exec env FLOCK="$0" flock -e -n "$0" "$0" "$@" || {
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printf "%s: %s\\n" "${BASH_SOURCE[0]##*/}" "flock execution error" >&2
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exit 1
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}
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fi
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# Source the mail configuration.
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source /etc/mail.conf "backups" 2>/dev/null || {
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printf "%s: %s\\n" "${BASH_SOURCE[0]##*/}" "Failed to source /etc/mail.conf" >&2
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exit 1
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}
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# Make sure BACKUP_MOUNTPOINT is a mountpoint.
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mountpoint "$BACKUP_MOUNTPOINT" >/dev/null 2>&1 || {
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CONFIG_FILE="backups" /opt/bin/pushover -T "Backup" -p '-1' -m "Failure: $RSYNC_SOURCE"
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mailx "${MAILX_ARGS[@]}" -S "from='$EMAIL_FROM'" -s "Backup failure: $RSYNC_SOURCE" "${EMAIL_TO[@]}" <<-EOF
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'$BACKUP_MOUNTPOINT' is not a mountpoint.
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EOF
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exit 1
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}
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# Do the backup.
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rsync "${RSYNC_OPTIONS[@]}" "${RSYNC_OPTIONS_VERBOSE[@]}" "${RSYNC_FILTER[@]}" "$RSYNC_SOURCE" "$BACKUP_DESTDIR" >"$RSYNC_LOG" 2>&1
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ERR="$?"
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# Send a notification and mail a log if there were errors.
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(( ERR != 0 )) && (( ERR != 10 )) && (( ERR != 24 )) && {
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CONFIG_FILE="backups" /opt/bin/pushover -T "Backup" -p '-1' -m "Failure: $RSYNC_SOURCE"
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mailx "${MAILX_ARGS[@]}" -S "from='$EMAIL_FROM'" -s "Backup failure: $RSYNC_SOURCE" "${EMAIL_TO[@]}" <<-EOF
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Exit code: $ERR
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Output:
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$(< "$RSYNC_LOG")
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EOF
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rm -f "$RSYNC_LOG"
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exit 1
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}
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rm -f "$RSYNC_LOG"
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exit 0
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