From 852280a4d1b8f26f8862dc7cdc7970f631a96cdc Mon Sep 17 00:00:00 2001
From: Andrew Noyes <andrew.noyes@snowflake.com>
Date: Wed, 14 Sep 2022 10:11:32 -0700
Subject: [PATCH] Add an option to disable kernel-aio in test harness

I'm using this for experimenting with criu: https://criu.org/Main_Page,
which doesn't support kernel aio.
---
 contrib/TestHarness2/test_harness/config.py | 1 +
 contrib/TestHarness2/test_harness/run.py    | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/contrib/TestHarness2/test_harness/config.py b/contrib/TestHarness2/test_harness/config.py
index 25e8553782..191fab629d 100644
--- a/contrib/TestHarness2/test_harness/config.py
+++ b/contrib/TestHarness2/test_harness/config.py
@@ -141,6 +141,7 @@ class Config:
         self.old_binaries_path_args = {'help': 'Path to the directory containing the old fdb binaries'}
         self.tls_plugin_path: Path = Path('/app/deploy/runtime/.tls_5_1/FDBLibTLS.so')
         self.tls_plugin_path_args = {'help': 'Path to the tls plugin used for binaries < 5.2.0'}
+        self.disable_kaio: bool = False
         self.use_valgrind: bool = False
         self.use_valgrind_args = {'action': 'store_true'}
         self.buggify = BuggifyOption('random')
diff --git a/contrib/TestHarness2/test_harness/run.py b/contrib/TestHarness2/test_harness/run.py
index d4beaeea8e..f144ded0da 100644
--- a/contrib/TestHarness2/test_harness/run.py
+++ b/contrib/TestHarness2/test_harness/run.py
@@ -351,6 +351,8 @@ class TestRun:
         if self.use_tls_plugin:
             command += ['--tls_plugin', str(config.tls_plugin_path)]
             env["FDB_TLS_PLUGIN"] = str(config.tls_plugin_path)
+        if config.disable_kaio:
+            command += ['--knob-disable-posix-kernel-aio=1']
         if Version.of_binary(self.binary) >= '7.1.0':
             command += ['-fi', 'on' if self.fault_injection_enabled else 'off']
         if self.restarting: