Introduce new disk partitioning scheme

New disk configuration provides grounds for upcoming features,
such as AB software updates and Storage VM and many more.

Signed-off-by: Ivan Nikolaenko <ivan.nikolaenko@unikie.com>

templates/targets/x86_64/generic/disk-config.nix

@@ -1,6 +1,6 @@
-# Copyright 2022-2023 TII (SSRC) and the Ghaf contributors
+# Copyright 2022-2024 TII (SSRC) and the Ghaf contributors
 # SPDX-License-Identifier: Apache-2.0
-# Example to create a bios compatible gpt partition
+#
 _: {
   disko.devices = {
     disk.disk1 = {
@@ -14,8 +14,8 @@ _: {
             size = "1M";
             type = "EF02";
           };
-          esp = {
-            name = "ESP";
+          esp_a = {
+            name = "ESP_A";
             size = "500M";
             type = "EF00";
             content = {
@@ -25,23 +25,43 @@ _: {
               mountOptions = ["umask=0077"];
             };
           };
-          root = {
-            name = "root";
-            size = "100%";
+          esp_b = {
+            name = "ESP_B";
+            size = "500M";
+            type = "EF00";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountOptions = ["umask=0077"];
+            };
+          };
+          # LVM pool that is going to be encrypted
+          other_1 = {
+            name = "lvm_pv_1";
+            size = "250G";
             content = {
               type = "lvm_pv";
               vg = "pool";
             };
           };
+          # LVM pool that is going to be passed to the Storage VM
+          other_2 = {
+            name = "lvm_pv_2";
+            size = "100%";
+            content = {
+              type = "lvm_pv";
+              vg = "vmstore";
+            };
+          };
         };
       };
     };
     lvm_vg = {
       pool = {
         type = "lvm_vg";
         lvs = {
-          root = {
-            size = "100%FREE";
+          root_a = {
+            size = "50G";
             content = {
               type = "filesystem";
               format = "ext4";
@@ -51,6 +71,94 @@ _: {
               ];
             };
           };
+          vm_storage_a = {
+            size = "30G";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountpoint = "/vmstore";
+              mountOptions = [
+                "defaults"
+              ];
+            };
+          };
+          reserved_a = {
+            size = "10G";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountOptions = [
+                "defaults"
+              ];
+            };
+          };
+          root_b = {
+            size = "50G";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountOptions = [
+                "defaults"
+              ];
+            };
+          };
+          vm_storage_b = {
+            size = "30G";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountOptions = [
+                "defaults"
+              ];
+            };
+          };
+          reserved_b = {
+            size = "10G";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountOptions = [
+                "defaults"
+              ];
+            };
+          };
+          gp_storage = {
+            # general purpose storage
+            size = "50G";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountOptions = [
+                "defaults"
+              ];
+            };
+          };
+          recovery = {
+            size = "100%FREE";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountOptions = [
+                "defaults"
+              ];
+            };
+          };
+        };
+      };
+      vmstore = {
+        # Dedicated partition for StorageVM
+        type = "lvm_vg";
+        lvs = {
+          storagevm = {
+            size = "100%FREE";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountOptions = [
+                "defaults"
+              ];
+            };
+          };
         };
       };
     };