69 lines
2.4 KiB
Bash
Executable File
69 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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#
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# Purpose : Back up your home folder with restic to your Nextcloud files, in
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# .backup-<hostname>. Run daily by coredesktop-backup.timer;
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# `configure backup` sets it up.
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#
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# Keeps 7 daily, 4 weekly and 6 monthly backups. To leave out more, list
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# paths or patterns in ~/.config/coredesktop/backup-exclude, one per line.
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# Wrapped in { ...; exit; } so bash reads the whole script up front; update
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# replaces this file (git pull) while a backup may be running.
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{
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COREDESKTOP="$HOME/.local/share/coredesktop"
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USER_EXCLUDE="$HOME/.config/coredesktop/backup-exclude"
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LOG_HINT="See: journalctl --user -u coredesktop-backup"
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# Tell the desktop when a backup fails, as no one watches the timer
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fail() {
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echo "$1" >&2
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notify-send --app-name=CoreDesktop --icon=dialog-error "Backup failed" "$1" 2> /dev/null
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exit 1
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}
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source "$COREDESKTOP/system/backup-env.sh" || exit 1
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[ -n "$RESTIC_REPOSITORY" ] || fail "Backups aren't set up. Run: configure backup"
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[ -n "$RESTIC_PASSWORD_COMMAND" ] || fail "The backup's passphrase isn't in your keyring. Run: configure backup"
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# Run at login, perhaps before the network is up; give it a few minutes
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for try in {1..10}; do
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curl -sf --max-time 10 -o /dev/null "${BACKUP_WEBDAV%%/remote.php/*}/status.php" && break
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sleep 30
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done
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# Rebuilt by restic, or by reinstalling, so not worth the space
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excludes=(
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"$HOME/.cache"
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"$HOME/.davfs2/cache"
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"$HOME/.local/share/Trash"
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"$HOME/.local/share/containers"
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"$HOME/.local/share/flatpak"
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"$HOME/.local/share/siblings"
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"$HOME/.local/share/coredesktop"
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"$HOME/.var/app/*/cache"
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"$HOME/.npm"
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"$HOME/.cargo/registry"
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"$HOME/go/pkg/mod"
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)
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exclude_args=(--exclude-caches)
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for path in "${excludes[@]}"; do
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exclude_args+=(--exclude "$path")
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done
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[ -f "$USER_EXCLUDE" ] && exclude_args+=(--exclude-file "$USER_EXCLUDE")
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echo "Backing up $HOME to $BACKUP_DIR in your Nextcloud files..."
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# --one-file-system leaves out other mounts and btrfs subvolumes inside home
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restic backup --one-file-system --host "$HOSTNAME" "${exclude_args[@]}" "$HOME"
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status=$?
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# 3 means some files couldn't be read; the rest were backed up
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(( status == 0 || status == 3 )) || fail "restic couldn't back up $HOME (exit $status). $LOG_HINT"
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echo "Removing old backups..."
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restic forget --host "$HOSTNAME" --keep-daily 7 --keep-weekly 4 --keep-monthly 6 --prune \
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|| fail "restic couldn't remove old backups. $LOG_HINT"
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echo "Backup finished."
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exit 0
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}
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