From: Peter Xu <peterx@redhat.com>
To: qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Leonardo Bras Soares Passos <lsoaresp@redhat.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
peterx@redhat.com, Juan Quintela <quintela@redhat.com>
Subject: [PATCH 2/2] tests: migration-test: Add dirty ring test
Date: Wed, 9 Jun 2021 20:52:39 -0400 [thread overview]
Message-ID: <20210610005239.265588-3-peterx@redhat.com> (raw)
In-Reply-To: <20210610005239.265588-1-peterx@redhat.com>
Add dirty ring test if kernel supports it. Add the dirty ring parameter on
source should be mostly enough, but let's change the dest too to make them
match always.
Signed-off-by: Peter Xu <peterx@redhat.com>
---
tests/qtest/migration-test.c | 51 +++++++++++++++++++++++++++++++++---
1 file changed, 48 insertions(+), 3 deletions(-)
diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
index d9225f58d4d..cc6e396d1a2 100644
--- a/tests/qtest/migration-test.c
+++ b/tests/qtest/migration-test.c
@@ -12,6 +12,7 @@
#include "qemu/osdep.h"
+#include <linux/kvm.h>
#include "libqos/libqtest.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
@@ -467,6 +468,8 @@ typedef struct {
bool use_shmem;
/* only launch the target process */
bool only_target;
+ /* Use dirty ring if true; dirty logging otherwise */
+ bool use_dirty_ring;
char *opts_source;
char *opts_target;
} MigrateStart;
@@ -573,11 +576,13 @@ static int test_migrate_start(QTestState **from, QTestState **to,
shmem_opts = g_strdup("");
}
- cmd_source = g_strdup_printf("-accel kvm -accel tcg%s%s "
+ cmd_source = g_strdup_printf("-accel kvm%s -accel tcg%s%s "
"-name source,debug-threads=on "
"-m %s "
"-serial file:%s/src_serial "
"%s %s %s %s",
+ args->use_dirty_ring ?
+ ",dirty-ring-size=4096" : "",
machine_opts ? " -machine " : "",
machine_opts ? machine_opts : "",
memory_size, tmpfs,
@@ -587,12 +592,14 @@ static int test_migrate_start(QTestState **from, QTestState **to,
*from = qtest_init(cmd_source);
}
- cmd_target = g_strdup_printf("-accel kvm -accel tcg%s%s "
+ cmd_target = g_strdup_printf("-accel kvm%s -accel tcg%s%s "
"-name target,debug-threads=on "
"-m %s "
"-serial file:%s/dest_serial "
"-incoming %s "
"%s %s %s %s",
+ args->use_dirty_ring ?
+ ",dirty-ring-size=4096" : "",
machine_opts ? " -machine " : "",
machine_opts ? machine_opts : "",
memory_size, tmpfs, uri,
@@ -785,12 +792,14 @@ static void test_baddest(void)
test_migrate_end(from, to, false);
}
-static void test_precopy_unix(void)
+static void test_precopy_unix_common(bool dirty_ring)
{
g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
MigrateStart *args = migrate_start_new();
QTestState *from, *to;
+ args->use_dirty_ring = dirty_ring;
+
if (test_migrate_start(&from, &to, uri, args)) {
return;
}
@@ -825,6 +834,18 @@ static void test_precopy_unix(void)
test_migrate_end(from, to, true);
}
+static void test_precopy_unix(void)
+{
+ /* Using default dirty logging */
+ test_precopy_unix_common(false);
+}
+
+static void test_precopy_unix_dirty_ring(void)
+{
+ /* Using dirty ring tracking */
+ test_precopy_unix_common(true);
+}
+
#if 0
/* Currently upset on aarch64 TCG */
static void test_ignore_shared(void)
@@ -1369,6 +1390,25 @@ static void test_multifd_tcp_cancel(void)
test_migrate_end(from, to2, true);
}
+static bool kvm_dirty_ring_supported(void)
+{
+ int ret, kvm_fd = open("/dev/kvm", O_RDONLY);
+
+ if (kvm_fd < 0) {
+ return false;
+ }
+
+ ret = ioctl(kvm_fd, KVM_CHECK_EXTENSION, KVM_CAP_DIRTY_LOG_RING);
+ close(kvm_fd);
+
+ /* We test with 4096 slots */
+ if (ret < 4096) {
+ return false;
+ }
+
+ return true;
+}
+
int main(int argc, char **argv)
{
char template[] = "/tmp/migration-test-XXXXXX";
@@ -1438,6 +1478,11 @@ int main(int argc, char **argv)
qtest_add_func("/migration/multifd/tcp/zstd", test_multifd_tcp_zstd);
#endif
+ if (kvm_dirty_ring_supported()) {
+ qtest_add_func("/migration/dirty_ring",
+ test_precopy_unix_dirty_ring);
+ }
+
ret = g_test_run();
g_assert_cmpint(ret, ==, 0);
--
2.31.1
next prev parent reply other threads:[~2021-06-10 0:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 0:52 [PATCH 0/2] tests: migration-test: Fix agressive test skip, add dirty ring test Peter Xu
2021-06-10 0:52 ` [PATCH 1/2] tests: migration-test: Still run the rest even if uffd missing Peter Xu
2021-06-10 18:56 ` Dr. David Alan Gilbert
2021-06-10 0:52 ` Peter Xu [this message]
2021-06-10 19:01 ` [PATCH 2/2] tests: migration-test: Add dirty ring test Dr. David Alan Gilbert
2021-06-10 19:32 ` Peter Xu
2021-06-14 17:55 ` Dr. David Alan Gilbert
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