feat: btrbk

hosts/gwiad/btrbk.nix

@@ -0,0 +1,29 @@
+{ config, lib, pkgs, ... }:
+
+{
+  services.btrbk = {
+    instances.btrbk = {
+      onCalendar = "hourly";
+      settings = {
+        snapshot_dir = "@snapshots";
+        snapshot_create = "onchange";
+        incremental = "strict";
+        snapshot_preserve_min = "2d";
+        snapshot_preserve = "7d";
+        target_preserve_min = "3d";
+        target_preserve = "20d";
+        timestamp_format = "long-iso";
+        volume."/btr_pool" = {
+          target = "/run/media/jhemono/Gwiad PHD/Backup";
+          subvolume = {
+            "@home" = {
+              snapshot_name = "home";
+              target_preserve = "20d 15w *m";
+            };
+            "@var".snapshot_name = "var";
+          };
+        };
+      };
+    };
+  };
+}