diff --git a/cloud-util/src/graceful_shutdown.rs b/cloud-util/src/graceful_shutdown.rs
index ededf75..8b12c82 100644
--- a/cloud-util/src/graceful_shutdown.rs
+++ b/cloud-util/src/graceful_shutdown.rs
@@ -32,8 +32,8 @@ pub fn graceful_shutdown() -> flume::Receiver<()> {
     tokio::spawn(async move {
         if let Ok(exit_type) = rx_exit.recv_async().await {
             match exit_type {
-                ExitType::Signal(_) => info!("exit by: {exit_type:?}"),
-                ExitType::Panic => eprintln!("exit by: {exit_type:?}"),
+                ExitType::Signal(signal_n) => info!("exit by: signal {}!", signal_n),
+                ExitType::Panic => eprintln!("exit by: panic!"),
             }
             drop(tx);
         }
diff --git a/cloud-util/src/wal.rs b/cloud-util/src/wal.rs
index 14083b6..51ae824 100644
--- a/cloud-util/src/wal.rs
+++ b/cloud-util/src/wal.rs
@@ -80,6 +80,7 @@ impl Wal {
         let mut ifs = OpenOptions::new()
             .read(true)
             .create(true)
+            .truncate(true)
             .write(true)
             .open(file_path)
             .await?;
@@ -119,6 +120,7 @@ impl Wal {
         let fs = OpenOptions::new()
             .read(true)
             .create(true)
+            .truncate(true)
             .write(true)
             .open(last_file_path)
             .await?;
@@ -197,6 +199,7 @@ impl Wal {
                     .read(true)
                     .write(true)
                     .create(true)
+                    .truncate(true)
                     .open(filename)
                     .await?;
                 entry.insert(fs);