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migration/multifd: Add new migration test cases for legacy zero page checking.

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Now that zero page checking is done on the multifd sender threads by
default, we still provide an option for backward compatibility. This
change adds a qtest migration test case to set the zero-page-detection
option to "legacy" and run multifd migration with zero page checking on the
migration main thread.

Signed-off-by: Hao Xiang <hao.xiang@bytedance.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240311180015.3359271-8-hao.xiang@linux.dev
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Hao Xiang 2024-03-11 18:00:15 +00:00 committed by Peter Xu
parent 70c25c92e6
commit 1815338df0
1 changed files with 52 additions and 0 deletions
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52
tests/qtest/migration-test.c
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@ -2771,6 +2771,24 @@ test_migrate_precopy_tcp_multifd_start(QTestState *from,
return test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
}
static void *
test_migrate_precopy_tcp_multifd_start_zero_page_legacy(QTestState *from,
QTestState *to)
{
test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
migrate_set_parameter_str(from, "zero-page-detection", "legacy");
return NULL;
}
static void *
test_migration_precopy_tcp_multifd_start_no_zero_page(QTestState *from,
QTestState *to)
{
test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
migrate_set_parameter_str(from, "zero-page-detection", "none");
return NULL;
}
static void *
test_migrate_precopy_tcp_multifd_zlib_start(QTestState *from,
QTestState *to)
@ -2812,6 +2830,36 @@ static void test_multifd_tcp_none(void)
test_precopy_common(&args);
}
static void test_multifd_tcp_zero_page_legacy(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.start_hook = test_migrate_precopy_tcp_multifd_start_zero_page_legacy,
/*
* Multifd is more complicated than most of the features, it
* directly takes guest page buffers when sending, make sure
* everything will work alright even if guest page is changing.
*/
.live = true,
};
test_precopy_common(&args);
}
static void test_multifd_tcp_no_zero_page(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.start_hook = test_migration_precopy_tcp_multifd_start_no_zero_page,
/*
* Multifd is more complicated than most of the features, it
* directly takes guest page buffers when sending, make sure
* everything will work alright even if guest page is changing.
*/
.live = true,
};
test_precopy_common(&args);
}
static void test_multifd_tcp_zlib(void)
{
MigrateCommon args = {
@ -3729,6 +3777,10 @@ int main(int argc, char **argv)
}
migration_test_add("/migration/multifd/tcp/plain/none",
test_multifd_tcp_none);
migration_test_add("/migration/multifd/tcp/plain/zero-page/legacy",
test_multifd_tcp_zero_page_legacy);
migration_test_add("/migration/multifd/tcp/plain/zero-page/none",
test_multifd_tcp_no_zero_page);
migration_test_add("/migration/multifd/tcp/plain/cancel",
test_multifd_tcp_cancel);
migration_test_add("/migration/multifd/tcp/plain/zlib",