disko test

flake.nix

@@ -469,7 +469,7 @@
           system = "aarch64-linux";
           modules = [
             pi4-disko.nixosModules.disko
-            ./share/disko/disko.nix
+            ./share/disko/pi-uefi-disko.nix
 
             pi4-impermanence.nixosModules.impermanence
             pi4-sops-nix.nixosModules.sops

share/disko/pi-uefi-disko.nix

@@ -0,0 +1,101 @@
+{ ... }:
+let
+  rootDisk = "/dev/nvme0n1";
+in
+{
+  disko.devices.disk.main.imageSize = "32G";
+  disko.devices = {
+    nodev."/" = {
+      fsType = "tmpfs";
+      mountOptions = [
+        "mode=755"
+        "defaults"
+        "size=2G"
+      ];
+    };
+    # root disk setup
+    disk.main = {
+      type = "disk";
+      device = rootDisk;
+      content = {
+        type = "gpt";
+        # specify partitions
+        partitions = {
+          # /boot/firmware
+          FIRMWARE = {
+            priority = 1;
+            name = "FIRMWARE";
+            start = "1M";
+            end = "1G";
+            type = "0700";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot/firmware";
+              mountOptions = [ "umask=0077" ];
+            };
+          };
+          # /boot
+          ESP = {
+            priority = 1;
+            name = "ESP";
+            start = "1G";
+            end = "2G";
+            type = "EF00";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot";
+              mountOptions = [ "umask=0077" ];
+            };
+          };
+
+          root = {
+            name = "btrfs-root";
+            size = "100%";
+            content = {
+              type = "btrfs";
+              extraArgs = [ "-f" ]; # Override existing partition
+              # Subvolumes must set a mountpoint in order to be mounted,
+              # unless their parent is mounted
+              subvolumes = {
+                "home" = {
+                  mountOptions = [ "compress=zstd" ];
+                  mountpoint = "/home";
+                };
+                "root" = {
+                  mountOptions = [
+                    "compress=zstd"
+                    "noatime"
+                  ];
+                  mountpoint = "/root";
+                };
+                "nix" = {
+                  mountOptions = [
+                    "compress=zstd"
+                    "noatime"
+                  ];
+                  mountpoint = "/nix";
+                };
+                "etc" = {
+                  mountOptions = [
+                    "compress=zstd"
+                    "noatime"
+                  ];
+                  mountpoint = "/etc";
+                };
+                "log" = {
+                  mountOptions = [
+                    "compress=zstd"
+                    "noatime"
+                  ];
+                  mountpoint = "/var/log";
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}