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envelope-from=steven.sistare@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add a test case to verify that the suspended state is handled correctly during live migration precopy. The test suspends the src, migrates, then wakes the dest. Signed-off-by: Steve Sistare --- tests/qtest/migration-helpers.c | 3 ++ tests/qtest/migration-helpers.h | 3 +- tests/qtest/migration-test.c | 73 +++++++++++++++++++++++++++++++++++++---- 3 files changed, 71 insertions(+), 8 deletions(-) diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helpers.c index b541108..d1fec49 100644 --- a/tests/qtest/migration-helpers.c +++ b/tests/qtest/migration-helpers.c @@ -31,6 +31,9 @@ bool migrate_watch_for_events(QTestState *who, const char *name, if (g_str_equal(name, "STOP")) { state->stop_seen = true; return true; + } else if (g_str_equal(name, "SUSPEND")) { + state->suspend_seen = true; + return true; } else if (g_str_equal(name, "RESUME")) { state->resume_seen = true; return true; diff --git a/tests/qtest/migration-helpers.h b/tests/qtest/migration-helpers.h index 59fbb83..bac8699 100644 --- a/tests/qtest/migration-helpers.h +++ b/tests/qtest/migration-helpers.h @@ -16,7 +16,8 @@ #include "libqtest.h" typedef struct QTestMigrationState { - bool stop_seen, resume_seen; + bool suspend_me; + bool stop_seen, suspend_seen, resume_seen; } QTestMigrationState; bool migrate_watch_for_events(QTestState *who, const char *name, diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c index 32fea73..cc508ef 100644 --- a/tests/qtest/migration-test.c +++ b/tests/qtest/migration-test.c @@ -135,7 +135,7 @@ static void init_bootfile(const char *bootpath, void *content, size_t len) /* * Wait for some output in the serial output file, * we get an 'A' followed by an endless string of 'B's - * but on the destination we won't have the A. + * but on the destination we won't have the A (unless we enabled suspend/resume) */ static void wait_for_serial(const char *side) { @@ -195,6 +195,13 @@ static void wait_for_stop(QTestState *who, QTestMigrationState *state) } } +static void wait_for_suspend(QTestState *who, QTestMigrationState *state) +{ + if (!state->suspend_seen) { + qtest_qmp_eventwait(who, "SUSPEND"); + } +} + /* * It's tricky to use qemu's migration event capability with qtest, * events suddenly appearing confuse the qmp()/hmp() responses. @@ -249,7 +256,7 @@ static void wait_for_migration_pass(QTestState *who) { uint64_t pass, prev_pass = 0, changes = 0; - while (changes < 2 && !src_state.stop_seen) { + while (changes < 2 && !src_state.stop_seen && !src_state.suspend_seen) { usleep(1000); pass = get_migration_pass(who); changes += (pass != prev_pass); @@ -545,7 +552,8 @@ static void migrate_wait_for_dirty_mem(QTestState *from, watch_byte = qtest_readb(from, watch_address); do { usleep(1000 * 10); - } while (qtest_readb(from, watch_address) == watch_byte); + } while (qtest_readb(from, watch_address) == watch_byte && + !src_state.suspend_seen); } @@ -727,6 +735,7 @@ static int test_migrate_start(QTestState **from, QTestState **to, dst_state = (QTestMigrationState) { }; src_state = (QTestMigrationState) { }; + src_state.suspend_me = args->suspend_me; x86_bootsect[SYM_suspend_me - SYM_start] = args->suspend_me; bootpath = g_strdup_printf("%s/bootsect", tmpfs); @@ -1522,8 +1531,12 @@ static void test_precopy_common(MigrateCommon *args) * change anything. */ if (args->result == MIG_TEST_SUCCEED) { - qtest_qmp_assert_success(from, "{ 'execute' : 'stop'}"); - wait_for_stop(from, &src_state); + if (src_state.suspend_me) { + wait_for_suspend(from, &src_state); + } else { + qtest_qmp_assert_success(from, "{ 'execute' : 'stop'}"); + wait_for_stop(from, &src_state); + } migrate_ensure_converge(from); } } @@ -1565,7 +1578,11 @@ static void test_precopy_common(MigrateCommon *args) */ wait_for_migration_complete(from); - wait_for_stop(from, &src_state); + if (src_state.suspend_me) { + wait_for_suspend(from, &src_state); + } else { + wait_for_stop(from, &src_state); + } } else { wait_for_migration_complete(from); @@ -1579,10 +1596,16 @@ static void test_precopy_common(MigrateCommon *args) qtest_qmp_assert_success(to, "{ 'execute' : 'cont'}"); } + /* Always get RESUME first after switchover */ if (!dst_state.resume_seen) { qtest_qmp_eventwait(to, "RESUME"); } + if (args->start.suspend_me) { + /* wakeup succeeds only if guest is suspended */ + qtest_qmp_assert_success(to, "{'execute': 'system_wakeup'}"); + } + wait_for_serial("dest_serial"); } @@ -1609,6 +1632,34 @@ static void test_precopy_unix_plain(void) test_precopy_common(&args); } +static void test_precopy_unix_suspend_live(void) +{ + g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + MigrateCommon args = { + .listen_uri = uri, + .connect_uri = uri, + /* + * despite being live, the test is fast because the src + * suspends immediately. + */ + .live = true, + .start.suspend_me = true, + }; + + test_precopy_common(&args); +} + +static void test_precopy_unix_suspend_notlive(void) +{ + g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + MigrateCommon args = { + .listen_uri = uri, + .connect_uri = uri, + .start.suspend_me = true, + }; + + test_precopy_common(&args); +} static void test_precopy_unix_dirty_ring(void) { @@ -2765,7 +2816,7 @@ static bool kvm_dirty_ring_supported(void) int main(int argc, char **argv) { bool has_kvm, has_tcg; - bool has_uffd; + bool has_uffd, is_x86; const char *arch; g_autoptr(GError) err = NULL; int ret; @@ -2782,6 +2833,7 @@ int main(int argc, char **argv) has_uffd = ufd_version_check(); arch = qtest_get_arch(); + is_x86 = !strcmp(arch, "i386") || !strcmp(arch, "x86_64"); /* * On ppc64, the test only works with kvm-hv, but not with kvm-pr and TCG @@ -2812,6 +2864,13 @@ int main(int argc, char **argv) module_call_init(MODULE_INIT_QOM); + if (is_x86) { + qtest_add_func("/migration/precopy/unix/suspend/live", + test_precopy_unix_suspend_live); + qtest_add_func("/migration/precopy/unix/suspend/notlive", + test_precopy_unix_suspend_notlive); + } + if (has_uffd) { qtest_add_func("/migration/postcopy/plain", test_postcopy); qtest_add_func("/migration/postcopy/recovery/plain",