diff --git a/service_vm/manager/src/lib.rs b/service_vm/manager/src/lib.rs
index 8dedec5..44c7871 100644
--- a/service_vm/manager/src/lib.rs
+++ b/service_vm/manager/src/lib.rs
@@ -225,6 +225,7 @@
     }
     let instance_img = OpenOptions::new()
         .create(true)
+        .truncate(true)
         .read(true)
         .write(true)
         .open(instance_img_path)
diff --git a/zipfuse/src/main.rs b/zipfuse/src/main.rs
index e8be42c..ef31a0c 100644
--- a/zipfuse/src/main.rs
+++ b/zipfuse/src/main.rs
@@ -320,6 +320,7 @@
         }
     }
 
+    #[allow(clippy::unused_io_amount)]
     fn read<W: io::Write + ZeroCopyWriter>(
         &self,
         _ctx: Context,