diff --git a/machines/kat-manah/default.nix b/machines/kat-manah/default.nix
index c7c80dd..ba00500 100644
--- a/machines/kat-manah/default.nix
+++ b/machines/kat-manah/default.nix
@@ -79,7 +79,10 @@
   ];
 
   programs.virt-manager.enable = true;
-  virtualisation.libvirtd.enable = true;
+  virtualisation.libvirtd = {
+    enable = true;
+    qemu.vhostUserPackages = [ pkgs.virtiofsd ];
+  };
 
   security.acme = {
     acceptTerms = true;
diff --git a/machines/kat-son/disks.nix b/machines/kat-son/disks.nix
index 16a2ee4..43ff88d 100644
--- a/machines/kat-son/disks.nix
+++ b/machines/kat-son/disks.nix
@@ -9,28 +9,21 @@
           partitions = {
             ESP = {
               type = "EF00";
-              size = "100M";
+              size = "100%";
               content = {
                 type = "filesystem";
                 format = "vfat";
                 mountpoint = "/boot";
               };
             };
-            root = {
-              size = "100%";
-              content = {
-                type = "filesystem";
-                format = "bcachefs";
-                mountpoint = "/";
-                mountOptions = [
-                  "fsck"
-                  "fix_errors"
-                ];
-              };
-            };
           };
         };
       };
     };
   };
+  boot.initrd.kernelModules = [ "virtiofs" ];
+  fileSystems."/" = {
+    device = "root";
+    fsType = "virtiofs";
+  };
 }