diff --git a/hosts/leoncloud/default.nix b/hosts/leoncloud/default.nix
index d77418ac..a12f9ce1 100644
--- a/hosts/leoncloud/default.nix
+++ b/hosts/leoncloud/default.nix
@@ -15,9 +15,9 @@ in
     writableStoreOverlay = "/nix/.rw-store";
 
     volumes = [ {
-      image = "nix-store-overlay.img";
+      image = "/dev/zvol/tank/storage/leoncloud/nix-store-overlay";
       mountPoint = config.microvm.writableStoreOverlay;
-      size = 2048;
+      size = 32 * 1024;
     } ];
   };