The test is only allowed to run in systems that know and in
filesystems which support O_DIRECT.
Signed-off-by: Fabiano Rosas <faro...@suse.de>
---
- added ifdefs for O_DIRECT and a probing function
---
tests/qtest/migration-helpers.c | 39 +++++++++++++++++++++++++++++++++
tests/qtest/migration-helpers.h | 1 +
tests/qtest/migration-test.c | 35 +++++++++++++++++++++++++++++
3 files changed, 75 insertions(+)
diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helpers.c
index 24fb7b3525..02b92f0cb6 100644
--- a/tests/qtest/migration-helpers.c
+++ b/tests/qtest/migration-helpers.c
@@ -292,3 +292,42 @@ char *resolve_machine_version(const char *alias, const
char *var1,
return find_common_machine_version(machine_name, var1, var2);
}
+
+#ifdef O_DIRECT
+/*
+ * Probe for O_DIRECT support on the filesystem. Since this is used
+ * for tests, be conservative, if anything fails, assume it's
+ * unsupported.
+ */
+bool probe_o_direct_support(const char *tmpfs)
+{
+ g_autofree char *filename = g_strdup_printf("%s/probe-o-direct", tmpfs);
+ int fd, flags = O_CREAT | O_RDWR | O_DIRECT;
+ void *buf;
+ ssize_t ret, len;
+ uint64_t offset;
+
+ fd = open(filename, flags, 0660);
+ if (fd < 0) {
+ unlink(filename);
+ return false;
+ }
+
+ /*
+ * Assuming 4k should be enough to satisfy O_DIRECT alignment
+ * requirements. The migration code uses 1M to be conservative.
+ */
+ len = 0x100000;
+ offset = 0x100000;
+
+ buf = g_malloc0(len);
+ ret = pwrite(fd, buf, len, offset);
+ unlink(filename);
+
+ if (ret < 0) {
+ return false;
+ }
+
+ return true;
+}
+#endif
diff --git a/tests/qtest/migration-helpers.h b/tests/qtest/migration-helpers.h
index e31dc85cc7..15df009d35 100644
--- a/tests/qtest/migration-helpers.h
+++ b/tests/qtest/migration-helpers.h
@@ -47,4 +47,5 @@ char *find_common_machine_version(const char *mtype, const
char *var1,
const char *var2);
char *resolve_machine_version(const char *alias, const char *var1,
const char *var2);
+bool probe_o_direct_support(const char *tmpfs);
#endif /* MIGRATION_HELPERS_H */
diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
index 5c5725687c..192b8ec993 100644
--- a/tests/qtest/migration-test.c
+++ b/tests/qtest/migration-test.c
@@ -2222,6 +2222,36 @@ static void test_multifd_file_fixed_ram(void)
test_file_common(&args, true);
}
+#ifdef O_DIRECT
+static void *migrate_multifd_fixed_ram_dio_start(QTestState *from,
+ QTestState *to)
+{
+ migrate_multifd_fixed_ram_start(from, to);
+
+ migrate_set_parameter_bool(from, "direct-io", true);
+ migrate_set_parameter_bool(to, "direct-io", true);
+
+ return NULL;
+}
+
+static void test_multifd_file_fixed_ram_dio(void)
+{
+ g_autofree char *uri = g_strdup_printf("file:%s/%s", tmpfs,
+ FILE_TEST_FILENAME);
+ MigrateCommon args = {
+ .connect_uri = uri,
+ .listen_uri = "defer",
+ .start_hook = migrate_multifd_fixed_ram_dio_start,
+ };
+
+ if (!probe_o_direct_support(tmpfs)) {
+ g_test_skip("Filesystem does not support O_DIRECT");
+ return;
+ }
+
+ test_file_common(&args, true);
+}
+#endif
static void test_precopy_tcp_plain(void)
{
@@ -3476,6 +3506,11 @@ int main(int argc, char **argv)
qtest_add_func("/migration/multifd/file/fixed-ram/live",
test_multifd_file_fixed_ram_live);
+#ifdef O_DIRECT
+ qtest_add_func("/migration/multifd/file/fixed-ram/dio",
+ test_multifd_file_fixed_ram_dio);
+#endif
+
#ifdef CONFIG_GNUTLS
qtest_add_func("/migration/precopy/unix/tls/psk",
test_precopy_unix_tls_psk);
--
2.35.3
