From a307141068b29cca39131b73995d21b58cdba006 Mon Sep 17 00:00:00 2001
From: Per Magnus Petersen <magnus@pmagnus.dk>
Date: Sat, 7 Mar 2026 15:54:15 +0100
Subject: [PATCH] Fix WAL archive_command failing when segment already exists

pg_basebackup -Xs copies WAL segments to the backup dir, causing
the archive_command to fail on those pre-existing files and block
all subsequent archiving.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 docker-compose.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docker-compose.yml b/docker-compose.yml
index c747596..ffb1d9a 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -21,7 +21,7 @@ services:
       - -c
       - archive_mode=on
       - -c
-      - archive_command=test ! -f /backup/wal/%f && cp %p /backup/wal/%f
+      - archive_command=test -f /backup/wal/%f || cp %p /backup/wal/%f
 
   postgres-backup:
     image: postgres:18