[Qemu-devel] [PATCH v3 5/6] tests: Add migration xbzrle test

[Juan Quintela <quintela@redhat.com>]

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 tests/migration-test.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/tests/migration-test.c b/tests/migration-test.c
index 841c89e28a..41dee78a9a 100644
--- a/tests/migration-test.c
+++ b/tests/migration-test.c
@@ -410,6 +410,20 @@ static void deprecated_set_speed(QTestState *who, const char *value)
     migrate_check_parameter(who, "max-bandwidth", value);
 }
 
+static void deprecated_set_cache_size(QTestState *who, const char *value)
+{
+    QDict *rsp;
+    gchar *cmd;
+
+    cmd = g_strdup_printf("{ 'execute': 'migrate-set-cache-size',"
+                          "'arguments': { 'value': %s } }", value);
+    rsp = qtest_qmp(who, cmd);
+    g_free(cmd);
+    g_assert(qdict_haskey(rsp, "return"));
+    QDECREF(rsp);
+    migrate_check_parameter(who, "xbzrle-cache-size", value);
+}
+
 static void migrate_set_parameter(QTestState *who, const char *parameter,
                                   const char *value)
 {
@@ -424,6 +438,10 @@ static void migrate_set_parameter(QTestState *who, const char *parameter,
         deprecated_set_speed(who, "12345");
     }
 
+    if (strcmp(parameter, "xbzrle-cache-size") == 0) {
+        deprecated_set_cache_size(who, "4096");
+    }
+
     cmd = g_strdup_printf("{ 'execute': 'migrate-set-parameters',"
                           "'arguments': { '%s': %s } }",
                           parameter, value);
@@ -673,6 +691,55 @@ static void test_precopy_tcp(void)
     g_free(port);
 }
 
+static void test_xbzrle(const char *uri)
+{
+    QTestState *from, *to;
+
+    test_migrate_start(&from, &to, uri);
+
+    /* We want to pick a speed slow enough that the test completes
+     * quickly, but that it doesn't complete precopy even on a slow
+     * machine, so also set the downtime.
+     */
+    /* 100 ms */
+    migrate_set_parameter(from, "downtime-limit", "1");
+    /* 1MB/s slow*/
+    migrate_set_parameter(from, "max-bandwidth", "1000000000");
+
+    migrate_set_parameter(from, "xbzrle-cache-size", "33554432");
+
+    migrate_set_capability(from, "xbzrle", "true");
+    migrate_set_capability(to, "xbzrle", "true");
+    /* Wait for the first serial output from the source */
+    wait_for_serial("src_serial");
+
+    migrate(from, uri);
+
+    wait_for_migration_pass(from);
+
+    /* 300ms it should converge */
+    migrate_set_parameter(from, "downtime-limit", "300");
+
+    if (!got_stop) {
+        qtest_qmp_eventwait(from, "STOP");
+    }
+    qtest_qmp_eventwait(to, "RESUME");
+
+    wait_for_serial("dest_serial");
+    wait_for_migration_complete(from);
+
+    test_migrate_end(from, to);
+}
+
+static void test_xbzrle_unix(void)
+{
+    char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
+
+    test_xbzrle(uri);
+    g_free(uri);
+}
+
+
 int main(int argc, char **argv)
 {
     char template[] = "/tmp/migration-test-XXXXXX";
@@ -695,6 +762,7 @@ int main(int argc, char **argv)
     qtest_add_func("/migration/precopy/unix", test_precopy_unix);
     qtest_add_func("/migration/precopy/tcp", test_precopy_tcp);
     qtest_add_func("/migration/postcopy/unix", test_postcopy);
+    qtest_add_func("/migration/xbzrle/unix", test_xbzrle_unix);
 
     ret = g_test_run();
 
-- 
2.14.3