From cc699f6f85a193cfe7bf378b31ebdbeeadedb6d3 Mon Sep 17 00:00:00 2001
From: "Alex Chi Z." <4198311+skyzh@users.noreply.github.com>
Date: Thu, 3 Jul 2025 14:57:42 -0700
Subject: [PATCH] fix(pageserver): do not log no-route-to-host errors (#12468)

## Problem

close https://github.com/neondatabase/neon/issues/12344

## Summary of changes

Add `HostUnreachable` and `NetworkUnreachable` to expected I/O error.
This was new in Rust 1.83.

Signed-off-by: Alex Chi Z <chi@neon.tech>
---
 libs/postgres_backend/src/lib.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/libs/postgres_backend/src/lib.rs b/libs/postgres_backend/src/lib.rs
index 091299f842..851d824291 100644
--- a/libs/postgres_backend/src/lib.rs
+++ b/libs/postgres_backend/src/lib.rs
@@ -78,7 +78,13 @@ pub fn is_expected_io_error(e: &io::Error) -> bool {
     use io::ErrorKind::*;
     matches!(
         e.kind(),
-        BrokenPipe | ConnectionRefused | ConnectionAborted | ConnectionReset | TimedOut
+        HostUnreachable
+            | NetworkUnreachable
+            | BrokenPipe
+            | ConnectionRefused
+            | ConnectionAborted
+            | ConnectionReset
+            | TimedOut,
     )
 }