1 files changed, 87 insertions, 0 deletions
diff --git a/machines/x220/disko-config.nix b/machines/x220/disko-config.nix
new file mode 100644
index 0000000..cdf31bd
--- /dev/null
+++ b/machines/x220/disko-config.nix
@@ -0,0 +1,87 @@
+# USAGE in your configuration.nix.
+# Update devices to match your hardware.
+# {
+#  imports = [ ./disko-config.nix ];
+#  disko.devices.disk.main.device = "/dev/sda";
+#  disko.devices.disk.main.content.partitions.swap.size = "16G"; # Must be greater than RAM to enable hibernation
+# }
+{ lib, config, ... }:
+{
+
+  boot.initrd.postDeviceCommands = ''
+    mkdir /btrfs_tmp
+    mount -t btrfs -o subvol=root,defaults ${config.disko.devices.disk.main.device} /btrfs_tmp
+    if [[ -e /btrfs_tmp/root ]]; then
+        mkdir -p /btrfs_tmp/old_roots
+        timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S")
+        mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
+    fi
+
+    delete_subvolume_recursively() {
+        IFS=$'\n'
+        for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
+            delete_subvolume_recursively "/btrfs_tmp/$i"
+        done
+        btrfs subvolume delete "$1"
+    }
+
+    for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
+        delete_subvolume_recursively "$i"
+    done
+
+    btrfs subvolume create /btrfs_tmp/root
+    umount /btrfs_tmp
+  '';
+
+  disko.devices = {
+    disk = {
+      main = {
+	device = "/dev/sda";
+        type = "disk";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              size = "1G";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0077" ];
+              };
+            };
+	    swap = {
+	      size = "13G";
+	      content = {
+		type = "swap";
+		discardPolicy = "both";
+                resumeDevice = true;
+	      };
+	    };
+            data = {
+              size = "100%";
+              content = {
+                type = "btrfs";
+		extraArgs = [ "-f" ];
+		mountpoint = "/partition-root";
+		subvolumes = {
+                  "/nix" = {
+                    mountOptions = [ "compress=zstd" "noatime" ];
+                    mountpoint = "/nix";
+                  };
+		  "/persist" = {
+		    mountpoint = "/persist";
+		  };
+		  "/root" = {
+		    mountpoint = "/";
+		  };
+		};
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}