Create Nix module for Creating Longhorn volumes

kubenix-modules/custom/longhorn-volume.nix

@@ -0,0 +1,68 @@
+{ lib, config, ... }:
+let
+  longhornVolumeOpts = { name, ... }: {
+    options = {
+      storage = lib.mkOption {
+        type = lib.types.str;
+      };
+    };
+  };
+in
+{
+  options = {
+    lab.longhornVolumes = lib.mkOption {
+      type = with lib.types; attrsOf (submodule longhornVolumeOpts);
+      default = { };
+    };
+  };
+
+  config = {
+    kubernetes.resources = {
+      persistentVolumes = builtins.mapAttrs
+        (name: longhornVolume: {
+          spec = {
+            accessModes = [ "ReadWriteOnce" ];
+            capacity.storage = longhornVolume.storage;
+
+            claimRef = {
+              inherit name;
+              namespace = "default";
+            };
+
+            csi = {
+              driver = "driver.longhorn.io";
+              fsType = "ext4";
+
+              volumeAttributes = {
+                dataLocality = "disabled";
+                fromBackup = "";
+                fsType = "ext4";
+                numberOfReplicas = "2";
+                recurringJobSelector = lib.generators.toYAML { } [{
+                  name = "backup-nfs";
+                  isGroup = false;
+                }];
+                staleReplicaTimeout = "30";
+                unmapMarkSnapChainRemoved = "ignored";
+              };
+              volumeHandle = name;
+            };
+
+            persistentVolumeReclaimPolicy = "Delete";
+            volumeMode = "Filesystem";
+          };
+        })
+        config.lab.longhornVolumes;
+
+      persistentVolumeClaims = builtins.mapAttrs
+        (name: longhornVolume: {
+          spec = {
+            accessModes = [ "ReadWriteOnce" ];
+            resources.requests.storage = longhornVolume.storage;
+            storageClassName = "";
+          };
+        })
+        config.lab.longhornVolumes;
+    };
+  };
+}