From bb7db3926ee99033d08fcb0b630ee8afcc7165b3 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Thu, 20 Nov 2025 12:07:15 +1030
Subject: [PATCH] sql: if we use `dev-sqlfilename`, don't bother syncing it to
 disk.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 plugins/sql.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/plugins/sql.c b/plugins/sql.c
index c73eb6787..cf0066d3d 100644
--- a/plugins/sql.c
+++ b/plugins/sql.c
@@ -268,6 +268,17 @@ static struct sqlite3 *sqlite_setup(struct plugin *plugin)
 	if (err != SQLITE_OK)
 		plugin_err(plugin, "Could not set foreign_keys: %s", errmsg);
 
+	if (sql->dbfilename) {
+		err = sqlite3_exec(db,
+				   "PRAGMA synchronous = OFF;"
+				   "PRAGMA journal_mode = OFF;"
+				   "PRAGMA temp_store = MEMORY;"
+				   , NULL, NULL,
+				   &errmsg);
+		if (err != SQLITE_OK)
+			plugin_err(plugin, "Could not disable sync: %s", errmsg);
+	}
+
 	return db;
 }