add email notifs to zfs and smart

modules/holocron/zfs/default.nix

@@ -19,16 +19,31 @@ in {
     boot.supportedFilesystems = ["zfs"];
 
     # enable smart monitoring
-    services.smartd.enable = true;
+    services.smartd = { 
+      enable = true;
+      notifications.mail = {
+        enable = true;
+        sender = "zfs@snowbelle.lan";
+      };
+    };
 
     # enable zfs
     services.zfs = {
       autoScrub.enable = true;
       autoScrub.interval = "weekly";
+      # email notifs
+      zed = {
+        enableMail = true;
+        settings = {
+          ZED_EMAIL_ADDR = ["root"];
+          # send notification if scrub succeeds
+          ZED_NOTIFY_VERBOSE = true;
+        };
+      };
     };
 
     # install userspace tools for acl's
-    environment.systemPackages = with pkgs; [ nfs-utils ];
+    environment.systemPackages = with pkgs; [smartmontools];
 
     fileSystems."/holocron" = {
       device = "holocron";