From 6577ab65d27201842bffb7f5f0075fd6e1a72d23 Mon Sep 17 00:00:00 2001
From: Kim Altintop <kim@eagain.io>
Date: Fri, 24 Apr 2026 11:06:47 +0200
Subject: [PATCH] paths: fdatasync PidFile

We do want to know the pid of the process holding the lock, so the
information should be durable.
---
 crates/paths/src/server.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crates/paths/src/server.rs b/crates/paths/src/server.rs
index 6aa7bec13a0..9f2c8ab90d5 100644
--- a/crates/paths/src/server.rs
+++ b/crates/paths/src/server.rs
@@ -49,6 +49,8 @@ impl ServerDataDir {
         pidfile.file.set_len(0)?;
         write!(pidfile.file, "{}", std::process::id())?;
         pidfile.file.flush()?;
+        pidfile.file.sync_data()?;
+
         Ok(pidfile)
     }