machines/renoir: change disko layout

Remove impermanence since it takes too much time to configure

machines/renoir/disko.nix

@@ -1,15 +1,10 @@
 # ---
-# schema = "btrfs-single-disk-subvolumes-impermanance-rollback"
+# schema = "btrfs-single-disk-subvolumes"
 # [placeholders]
 # mainDisk = "/dev/disk/by-id/nvme-CT1000P3PSSD8_2313E6C35BC1" 
 # ---
 # This file was automatically generated!
 # CHANGING this configuration requires wiping and reinstalling the machine
-{ config, ... }:
-let
-  # Adjust, to match the partition's priority.
-  rootPartition = "${config.disko.devices.disk."main".device}-part3";
-in
 {
   boot.loader.grub = {
     efiInstallAsRemovable = true;
@@ -19,7 +14,7 @@ in
   disko.devices = {
     disk = {
       "main" = {
-        name = "main-af36cf221b9a469888f67f3404be01a5";
+        name = "main-d15332ecbf8b4063adcbfbebda63a3a8";
         device = "/dev/disk/by-id/nvme-CT1000P3PSSD8_2313E6C35BC1";
         type = "disk";
         content = {
@@ -33,7 +28,6 @@ in
             "ESP" = {
               type = "EF00";
               size = "500M";
-              priority = 2;
               content = {
                 type = "filesystem";
                 format = "vfat";
@@ -41,9 +35,15 @@ in
                 mountOptions = [ "umask=0077" ];
               };
             };
+            #"swap" = {
+            #  size = "8G"; # adjust
+            #  content = {
+            #    type = "swap";
+            #    discardPolicy = "both";
+            #  };
+            #};
             "root" = {
               size = "100%";
-              priority = 3;
               content = {
                 type = "btrfs";
                 extraArgs = [
@@ -66,74 +66,15 @@ in
                     mountpoint = "/home";
                     mountOptions = [ "compress=zstd" ];
                   };
-                  "@persist" = {
-                    mountpoint = "/persist";
-                    mountOptions = [ "compress=zstd" ];
-                  };
                 };
               };
             };
-            #"swap" = {
-            #  size = "8G"; # adjust
-            #  content = {
-            #    type = "swap";
-            #    discardPolicy = "both";
-            #  };
-            #};
           };
         };
       };
     };
   };
 
-  fileSystems."/persist".neededForBoot = true;
-
-  # https://www.notashelf.dev/posts/impermanence/#impermanence
-  boot.initrd.systemd = {
-    enable = true;
-    services.rollback = {
-      description = "Rollback BTRFS root drive to a pristine state";
-
-      wantedBy = [ "initrd.target" ];
-      after = [ "initrd-root-device.target" ];
-      before = [ "sysroot.mount" ];
-
-      unitConfig.DefaultDependencies = "no";
-      serviceConfig.Type = "oneshot";
-      script = ''
-        echo "Mounting root btrfs drive..."
-        mkdir --parents /mnt
-        mount --options "subvol=/" ${rootPartition} /mnt
-
-        if [[ -e /mnt/@root ]]; then
-            mkdir --parents /mnt/root.old.d
-            timestamp=$(date --date="@$(stat --format=%Y /mnt/@root)" "+%Y-%m-%dT%H:%M:%S")
-            echo "Moving @root to 'root.old.d/$timestamp'..."
-            mv /mnt/@root "/mnt/root.old.d/$timestamp"
-        fi
-
-        delete_subvolume_recursively() {
-            IFS=$'\n'
-            for subvolume in $(btrfs subvolume list -o "$1" | cut --fields 9- --delimiter ' '); do
-                delete_subvolume_recursively "/mnt/$subvolume"
-            done
-            echo "Deleting subvolume '$subvolume'..."
-            btrfs subvolume delete "$1"
-        }
-        echo "Deleting very old subvolumes..."
-        for subvolume in $(find /mnt/root.old.d/ -maxdepth 1 -mtime +30); do
-            delete_subvolume_recursively "$subvolume"
-        done
-
-        echo "Creating new empty subvolume @root..."
-        btrfs subvolume create /mnt/@root
-
-        echo "Finished successfully. Unmounting..."
-        umount /mnt
-      '';
-    };
-  };
-
   # Automatic local snapshots
   # https://digint.ch/btrbk/doc/readme.html
   #$ systemctl start btrbk-<instance>
@@ -152,20 +93,10 @@ in
       onCalendar = "*/2:00";
       settings = {
         subvolume = "/home";
-        snapshot_create = "onchange";
         snapshot_dir = "/home";
         snapshot_preserve = "16h 7d 3w 2m";
         snapshot_preserve_min = "3d";
       };
     };
-    instances."persist" = {
-      onCalendar = "*/2:00";
-      settings = {
-        subvolume = "/persist";
-        snapshot_dir = "/persist";
-        snapshot_preserve = "16h 7d 3w 2m";
-        snapshot_preserve_min = "3d";
-      };
-    };
   };
 }