88 lines
2.3 KiB
Nix
88 lines
2.3 KiB
Nix
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{ config, lib, pkgs, ... }:
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with lib;
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let
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serviceConfig = config.services.borgmatic;
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programConfig = config.programs.borgmatic;
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in {
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meta.maintainers = [ maintainers.DamienCassou ];
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options = {
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services.borgmatic = {
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enable = mkEnableOption "Borgmatic service";
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frequency = mkOption {
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type = types.str;
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default = "hourly";
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description = ''
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How often to run borgmatic when
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<code language="nix">services.borgmatic.enable = true</code>.
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This value is passed to the systemd timer configuration as
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the onCalendar option. See
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<citerefentry>
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<refentrytitle>systemd.time</refentrytitle>
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<manvolnum>7</manvolnum>
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</citerefentry>
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for more information about the format.
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'';
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};
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};
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};
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config = mkIf serviceConfig.enable {
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assertions = [
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(lib.hm.assertions.assertPlatform "services.borgmatic" pkgs
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lib.platforms.linux)
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];
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systemd.user = {
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services.borgmatic = {
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Unit = {
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Description = "borgmatic backup";
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# Prevent borgmatic from running unless the machine is
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# plugged into power:
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ConditionACPower = true;
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};
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Service = {
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Type = "oneshot";
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# Lower CPU and I/O priority:
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Nice = 19;
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CPUSchedulingPolicy = "batch";
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IOSchedulingClass = "best-effort";
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IOSchedulingPriority = 7;
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IOWeight = 100;
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Restart = "no";
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LogRateLimitIntervalSec = 0;
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# Delay start to prevent backups running during boot:
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ExecStartPre = "${pkgs.coreutils}/bin/sleep 3m";
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ExecStart = ''
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${pkgs.systemd}/bin/systemd-inhibit \
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--who="borgmatic" \
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--why="Prevent interrupting scheduled backup" \
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${programConfig.package}/bin/borgmatic \
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--stats \
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--verbosity -1 \
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--list \
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--syslog-verbosity 1
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'';
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};
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};
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timers.borgmatic = {
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Unit.Description = "Run borgmatic backup";
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Timer = {
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OnCalendar = serviceConfig.frequency;
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Persistent = true;
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RandomizedDelaySec = "10m";
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};
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Install.WantedBy = [ "timers.target" ];
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};
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};
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};
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}
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