49 lines
1.3 KiB
Nix
49 lines
1.3 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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let
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cfg = config.mj.base.btrfssnapshot;
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in
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{
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options.mj.base.btrfssnapshot = {
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enable = lib.mkEnableOption "Enable btrfs snapshots";
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subvolumes = lib.mkOption {
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default = { };
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type =
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with lib.types;
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attrsOf (submodule {
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options = {
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label = lib.mkOption { type = str; };
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keep = lib.mkOption { type = int; };
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refreshInterval = lib.mkOption { type = str; };
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};
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});
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};
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};
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config = lib.mkIf cfg.enable {
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systemd = {
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services = lib.mapAttrs' (
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subvolume: params:
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lib.nameValuePair "btrfs-snapshot-${lib.strings.sanitizeDerivationName subvolume}" {
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description = "${params.label} btrfs snapshot for ${subvolume} (keep ${params.keep}";
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serviceConfig.ExecStart = "${pkgs.btrfs-auto-snapshot} --verbose --label=${params.label} --keep=${params.keep} ${subvolume}";
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}
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);
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timers = lib.mapAttrs' (
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subvolume: params:
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lib.nameValuePair "btrfs-snapshot-${lib.strings.sanitizeDerivationName subvolume}" {
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description = "${params.label} btrfs snapshot for ${subvolume}";
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wantedBy = [ "timers.target" ];
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timerConfig.OnCalendar = params.refreshInterval;
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}
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);
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};
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};
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}
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