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Mon, 13 Nov 2023 18:34:14 +0000 Received: from iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3ADIY2Jm026498; Mon, 13 Nov 2023 18:34:14 GMT Received: from ca-dev63.us.oracle.com (ca-dev63.us.oracle.com [10.211.8.221]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3ub5k23k09-11; Mon, 13 Nov 2023 18:34:14 +0000 From: Steve Sistare To: qemu-devel@nongnu.org Cc: Juan Quintela , Peter Xu , Paolo Bonzini , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Fabiano Rosas , Leonardo Bras , Steve Sistare Subject: [PATCH V5 10/12] tests/qtest: precopy migration with suspend Date: Mon, 13 Nov 2023 10:33:58 -0800 Message-Id: <1699900440-207345-11-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1699900440-207345-1-git-send-email-steven.sistare@oracle.com> References: <1699900440-207345-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-13_09,2023-11-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 mlxlogscore=999 spamscore=0 suspectscore=0 phishscore=0 bulkscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311130151 X-Proofpoint-ORIG-GUID: SpisKQNS8s9f3U7UkL4am6X8q-QcXExa X-Proofpoint-GUID: SpisKQNS8s9f3U7UkL4am6X8q-QcXExa Received-SPF: pass client-ip=205.220.177.32; 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, T_SCC_BODY_TEXT_LINE=-0.01 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 | 2 ++ tests/qtest/migration-test.c | 69 +++++++++++++++++++++++++++++++++++++---- 3 files changed, 68 insertions(+), 6 deletions(-) diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helpers.c index fd3b94e..37e8e81 100644 --- a/tests/qtest/migration-helpers.c +++ b/tests/qtest/migration-helpers.c @@ -32,6 +32,9 @@ 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 3d32699..b478549 100644 --- a/tests/qtest/migration-helpers.h +++ b/tests/qtest/migration-helpers.h @@ -18,6 +18,8 @@ typedef struct QTestMigrationState { bool stop_seen; bool resume_seen; + bool suspend_seen; + bool suspend_me; } 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 bef1430..42706c9 100644 --- a/tests/qtest/migration-test.c +++ b/tests/qtest/migration-test.c @@ -178,7 +178,7 @@ static void bootfile_delete(void) /* * 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) { @@ -245,6 +245,13 @@ static void wait_for_resume(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. @@ -299,7 +306,7 @@ 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); @@ -595,7 +602,8 @@ 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); } @@ -771,6 +779,7 @@ static int test_migrate_start(QTestState **from, QTestState **to, dst_state = (QTestMigrationState) { }; src_state = (QTestMigrationState) { }; bootfile_create(tmpfs, args->suspend_me); + src_state.suspend_me = args->suspend_me; if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) { memory_size = "150M"; @@ -1730,8 +1739,12 @@ 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); } } @@ -1777,6 +1790,9 @@ static void test_precopy_common(MigrateCommon *args) */ wait_for_migration_complete(from); + if (src_state.suspend_me) { + wait_for_suspend(from, &src_state); + } wait_for_stop(from, &src_state); } else { @@ -1793,6 +1809,11 @@ static void test_precopy_common(MigrateCommon *args) wait_for_resume(to, &dst_state); + 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"); } @@ -1879,6 +1900,34 @@ 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) { @@ -3277,7 +3326,7 @@ 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; const char *qemu_src = getenv(QEMU_ENV_SRC); @@ -3307,6 +3356,7 @@ 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 @@ -3337,6 +3387,13 @@ 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",