From 8b05a87f754b31ef9d0844e4fd1ca9a1dce4a67c Mon Sep 17 00:00:00 2001
From: Konstantin Knizhnik <knizhnik@garret.ru>
Date: Fri, 17 Mar 2023 15:25:26 +0200
Subject: [PATCH] Add test that no redundant image are generatd if them are
 wanted by GC

---
 pageserver/src/tenant/storage_layer/image_layer.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pageserver/src/tenant/storage_layer/image_layer.rs b/pageserver/src/tenant/storage_layer/image_layer.rs
index d298b3e852..dc98be8c0b 100644
--- a/pageserver/src/tenant/storage_layer/image_layer.rs
+++ b/pageserver/src/tenant/storage_layer/image_layer.rs
@@ -623,6 +623,9 @@ impl ImageLayerWriterInner {
                 lsn: self.lsn,
             },
         );
+        if final_path.exists() {
+            warn!("Overwrite existed image layer {}", final_path.display());
+        }
         std::fs::rename(self.path, final_path)?;
 
         trace!("created image layer {}", layer.path().display());