| /* |
| * QTest testcase for migration |
| * |
| * Copyright (c) 2016-2018 Red Hat, Inc. and/or its affiliates |
| * based on the vhost-user-test.c that is: |
| * Copyright (c) 2014 Virtual Open Systems Sarl. |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| * See the COPYING file in the top-level directory. |
| * |
| */ |
| |
| #include "qemu/osdep.h" |
| |
| #include "libqtest.h" |
| #include "qapi/qmp/qdict.h" |
| #include "qapi/qmp/qjson.h" |
| #include "qemu/module.h" |
| #include "qemu/option.h" |
| #include "qemu/range.h" |
| #include "qemu/sockets.h" |
| #include "chardev/char.h" |
| #include "qapi/qapi-visit-sockets.h" |
| #include "qapi/qobject-input-visitor.h" |
| #include "qapi/qobject-output-visitor.h" |
| |
| #include "migration/migration-test.h" |
| |
| /* TODO actually test the results and get rid of this */ |
| #define qtest_qmp_discard_response(...) qobject_unref(qtest_qmp(__VA_ARGS__)) |
| |
| unsigned start_address; |
| unsigned end_address; |
| bool got_stop; |
| static bool uffd_feature_thread_id; |
| |
| #if defined(__linux__) |
| #include <sys/syscall.h> |
| #include <sys/vfs.h> |
| #endif |
| |
| #if defined(__linux__) && defined(__NR_userfaultfd) && defined(CONFIG_EVENTFD) |
| #include <sys/eventfd.h> |
| #include <sys/ioctl.h> |
| #include <linux/userfaultfd.h> |
| |
| static bool ufd_version_check(void) |
| { |
| struct uffdio_api api_struct; |
| uint64_t ioctl_mask; |
| |
| int ufd = syscall(__NR_userfaultfd, O_CLOEXEC); |
| |
| if (ufd == -1) { |
| g_test_message("Skipping test: userfaultfd not available"); |
| return false; |
| } |
| |
| api_struct.api = UFFD_API; |
| api_struct.features = 0; |
| if (ioctl(ufd, UFFDIO_API, &api_struct)) { |
| g_test_message("Skipping test: UFFDIO_API failed"); |
| return false; |
| } |
| uffd_feature_thread_id = api_struct.features & UFFD_FEATURE_THREAD_ID; |
| |
| ioctl_mask = (__u64)1 << _UFFDIO_REGISTER | |
| (__u64)1 << _UFFDIO_UNREGISTER; |
| if ((api_struct.ioctls & ioctl_mask) != ioctl_mask) { |
| g_test_message("Skipping test: Missing userfault feature"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| #else |
| static bool ufd_version_check(void) |
| { |
| g_test_message("Skipping test: Userfault not available (builtdtime)"); |
| return false; |
| } |
| |
| #endif |
| |
| static const char *tmpfs; |
| |
| /* The boot file modifies memory area in [start_address, end_address) |
| * repeatedly. It outputs a 'B' at a fixed rate while it's still running. |
| */ |
| #include "tests/migration/i386/a-b-bootblock.h" |
| #include "tests/migration/aarch64/a-b-kernel.h" |
| #include "tests/migration/s390x/a-b-bios.h" |
| |
| static void init_bootfile(const char *bootpath, void *content, size_t len) |
| { |
| FILE *bootfile = fopen(bootpath, "wb"); |
| |
| g_assert_cmpint(fwrite(content, len, 1, bootfile), ==, 1); |
| fclose(bootfile); |
| } |
| |
| /* |
| * 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. |
| */ |
| static void wait_for_serial(const char *side) |
| { |
| char *serialpath = g_strdup_printf("%s/%s", tmpfs, side); |
| FILE *serialfile = fopen(serialpath, "r"); |
| const char *arch = qtest_get_arch(); |
| int started = (strcmp(side, "src_serial") == 0 && |
| strcmp(arch, "ppc64") == 0) ? 0 : 1; |
| |
| g_free(serialpath); |
| do { |
| int readvalue = fgetc(serialfile); |
| |
| if (!started) { |
| /* SLOF prints its banner before starting test, |
| * to ignore it, mark the start of the test with '_', |
| * ignore all characters until this marker |
| */ |
| switch (readvalue) { |
| case '_': |
| started = 1; |
| break; |
| case EOF: |
| fseek(serialfile, 0, SEEK_SET); |
| usleep(1000); |
| break; |
| } |
| continue; |
| } |
| switch (readvalue) { |
| case 'A': |
| /* Fine */ |
| break; |
| |
| case 'B': |
| /* It's alive! */ |
| fclose(serialfile); |
| return; |
| |
| case EOF: |
| started = (strcmp(side, "src_serial") == 0 && |
| strcmp(arch, "ppc64") == 0) ? 0 : 1; |
| fseek(serialfile, 0, SEEK_SET); |
| usleep(1000); |
| break; |
| |
| default: |
| fprintf(stderr, "Unexpected %d on %s serial\n", readvalue, side); |
| g_assert_not_reached(); |
| } |
| } while (true); |
| } |
| |
| static void stop_cb(void *opaque, const char *name, QDict *data) |
| { |
| if (!strcmp(name, "STOP")) { |
| got_stop = true; |
| } |
| } |
| |
| /* |
| * Events can get in the way of responses we are actually waiting for. |
| */ |
| GCC_FMT_ATTR(3, 4) |
| static QDict *wait_command_fd(QTestState *who, int fd, const char *command, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, command); |
| qtest_qmp_vsend_fds(who, &fd, 1, command, ap); |
| va_end(ap); |
| |
| return qtest_qmp_receive_success(who, stop_cb, NULL); |
| } |
| |
| /* |
| * Events can get in the way of responses we are actually waiting for. |
| */ |
| GCC_FMT_ATTR(2, 3) |
| static QDict *wait_command(QTestState *who, const char *command, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, command); |
| qtest_qmp_vsend(who, command, ap); |
| va_end(ap); |
| |
| return qtest_qmp_receive_success(who, stop_cb, NULL); |
| } |
| |
| /* |
| * Note: caller is responsible to free the returned object via |
| * qobject_unref() after use |
| */ |
| static QDict *migrate_query(QTestState *who) |
| { |
| return wait_command(who, "{ 'execute': 'query-migrate' }"); |
| } |
| |
| /* |
| * Note: caller is responsible to free the returned object via |
| * g_free() after use |
| */ |
| static gchar *migrate_query_status(QTestState *who) |
| { |
| QDict *rsp_return = migrate_query(who); |
| gchar *status = g_strdup(qdict_get_str(rsp_return, "status")); |
| |
| g_assert(status); |
| qobject_unref(rsp_return); |
| |
| return status; |
| } |
| |
| /* |
| * It's tricky to use qemu's migration event capability with qtest, |
| * events suddenly appearing confuse the qmp()/hmp() responses. |
| */ |
| |
| static int64_t read_ram_property_int(QTestState *who, const char *property) |
| { |
| QDict *rsp_return, *rsp_ram; |
| int64_t result; |
| |
| rsp_return = migrate_query(who); |
| if (!qdict_haskey(rsp_return, "ram")) { |
| /* Still in setup */ |
| result = 0; |
| } else { |
| rsp_ram = qdict_get_qdict(rsp_return, "ram"); |
| result = qdict_get_try_int(rsp_ram, property, 0); |
| } |
| qobject_unref(rsp_return); |
| return result; |
| } |
| |
| static int64_t read_migrate_property_int(QTestState *who, const char *property) |
| { |
| QDict *rsp_return; |
| int64_t result; |
| |
| rsp_return = migrate_query(who); |
| result = qdict_get_try_int(rsp_return, property, 0); |
| qobject_unref(rsp_return); |
| return result; |
| } |
| |
| static uint64_t get_migration_pass(QTestState *who) |
| { |
| return read_ram_property_int(who, "dirty-sync-count"); |
| } |
| |
| static void read_blocktime(QTestState *who) |
| { |
| QDict *rsp_return; |
| |
| rsp_return = migrate_query(who); |
| g_assert(qdict_haskey(rsp_return, "postcopy-blocktime")); |
| qobject_unref(rsp_return); |
| } |
| |
| static bool check_migration_status(QTestState *who, const char *goal, |
| const char **ungoals) |
| { |
| bool ready; |
| char *current_status; |
| const char **ungoal; |
| |
| current_status = migrate_query_status(who); |
| ready = strcmp(current_status, goal) == 0; |
| if (!ungoals) { |
| g_assert_cmpstr(current_status, !=, "failed"); |
| /* |
| * If looking for a state other than completed, |
| * completion of migration would cause the test to |
| * hang. |
| */ |
| if (strcmp(goal, "completed") != 0) { |
| g_assert_cmpstr(current_status, !=, "completed"); |
| } |
| } else { |
| for (ungoal = ungoals; *ungoal; ungoal++) { |
| g_assert_cmpstr(current_status, !=, *ungoal); |
| } |
| } |
| g_free(current_status); |
| return ready; |
| } |
| |
| static void wait_for_migration_status(QTestState *who, |
| const char *goal, |
| const char **ungoals) |
| { |
| while (!check_migration_status(who, goal, ungoals)) { |
| usleep(1000); |
| } |
| } |
| |
| static void wait_for_migration_complete(QTestState *who) |
| { |
| wait_for_migration_status(who, "completed", NULL); |
| } |
| |
| static void wait_for_migration_pass(QTestState *who) |
| { |
| uint64_t initial_pass = get_migration_pass(who); |
| uint64_t pass; |
| |
| /* Wait for the 1st sync */ |
| while (!got_stop && !initial_pass) { |
| usleep(1000); |
| initial_pass = get_migration_pass(who); |
| } |
| |
| do { |
| usleep(1000); |
| pass = get_migration_pass(who); |
| } while (pass == initial_pass && !got_stop); |
| } |
| |
| static void check_guests_ram(QTestState *who) |
| { |
| /* Our ASM test will have been incrementing one byte from each page from |
| * start_address to < end_address in order. This gives us a constraint |
| * that any page's byte should be equal or less than the previous pages |
| * byte (mod 256); and they should all be equal except for one transition |
| * at the point where we meet the incrementer. (We're running this with |
| * the guest stopped). |
| */ |
| unsigned address; |
| uint8_t first_byte; |
| uint8_t last_byte; |
| bool hit_edge = false; |
| int bad = 0; |
| |
| qtest_memread(who, start_address, &first_byte, 1); |
| last_byte = first_byte; |
| |
| for (address = start_address + TEST_MEM_PAGE_SIZE; address < end_address; |
| address += TEST_MEM_PAGE_SIZE) |
| { |
| uint8_t b; |
| qtest_memread(who, address, &b, 1); |
| if (b != last_byte) { |
| if (((b + 1) % 256) == last_byte && !hit_edge) { |
| /* This is OK, the guest stopped at the point of |
| * incrementing the previous page but didn't get |
| * to us yet. |
| */ |
| hit_edge = true; |
| last_byte = b; |
| } else { |
| bad++; |
| if (bad <= 10) { |
| fprintf(stderr, "Memory content inconsistency at %x" |
| " first_byte = %x last_byte = %x current = %x" |
| " hit_edge = %x\n", |
| address, first_byte, last_byte, b, hit_edge); |
| } |
| } |
| } |
| } |
| if (bad >= 10) { |
| fprintf(stderr, "and in another %d pages", bad - 10); |
| } |
| g_assert(bad == 0); |
| } |
| |
| static void cleanup(const char *filename) |
| { |
| char *path = g_strdup_printf("%s/%s", tmpfs, filename); |
| |
| unlink(path); |
| g_free(path); |
| } |
| |
| static char *get_shmem_opts(const char *mem_size, const char *shmem_path) |
| { |
| return g_strdup_printf("-object memory-backend-file,id=mem0,size=%s" |
| ",mem-path=%s,share=on -numa node,memdev=mem0", |
| mem_size, shmem_path); |
| } |
| |
| static char *SocketAddress_to_str(SocketAddress *addr) |
| { |
| switch (addr->type) { |
| case SOCKET_ADDRESS_TYPE_INET: |
| return g_strdup_printf("tcp:%s:%s", |
| addr->u.inet.host, |
| addr->u.inet.port); |
| case SOCKET_ADDRESS_TYPE_UNIX: |
| return g_strdup_printf("unix:%s", |
| addr->u.q_unix.path); |
| case SOCKET_ADDRESS_TYPE_FD: |
| return g_strdup_printf("fd:%s", addr->u.fd.str); |
| case SOCKET_ADDRESS_TYPE_VSOCK: |
| return g_strdup_printf("tcp:%s:%s", |
| addr->u.vsock.cid, |
| addr->u.vsock.port); |
| default: |
| return g_strdup("unknown address type"); |
| } |
| } |
| |
| static char *migrate_get_socket_address(QTestState *who, const char *parameter) |
| { |
| QDict *rsp; |
| char *result; |
| Error *local_err = NULL; |
| SocketAddressList *addrs; |
| Visitor *iv = NULL; |
| QObject *object; |
| |
| rsp = migrate_query(who); |
| object = qdict_get(rsp, parameter); |
| |
| iv = qobject_input_visitor_new(object); |
| visit_type_SocketAddressList(iv, NULL, &addrs, &local_err); |
| visit_free(iv); |
| |
| /* we are only using a single address */ |
| result = SocketAddress_to_str(addrs->value); |
| |
| qapi_free_SocketAddressList(addrs); |
| qobject_unref(rsp); |
| return result; |
| } |
| |
| static long long migrate_get_parameter_int(QTestState *who, |
| const char *parameter) |
| { |
| QDict *rsp; |
| long long result; |
| |
| rsp = wait_command(who, "{ 'execute': 'query-migrate-parameters' }"); |
| result = qdict_get_int(rsp, parameter); |
| qobject_unref(rsp); |
| return result; |
| } |
| |
| static void migrate_check_parameter_int(QTestState *who, const char *parameter, |
| long long value) |
| { |
| long long result; |
| |
| result = migrate_get_parameter_int(who, parameter); |
| g_assert_cmpint(result, ==, value); |
| } |
| |
| static void migrate_set_parameter_int(QTestState *who, const char *parameter, |
| long long value) |
| { |
| QDict *rsp; |
| |
| rsp = qtest_qmp(who, |
| "{ 'execute': 'migrate-set-parameters'," |
| "'arguments': { %s: %lld } }", |
| parameter, value); |
| g_assert(qdict_haskey(rsp, "return")); |
| qobject_unref(rsp); |
| migrate_check_parameter_int(who, parameter, value); |
| } |
| |
| static void migrate_pause(QTestState *who) |
| { |
| QDict *rsp; |
| |
| rsp = wait_command(who, "{ 'execute': 'migrate-pause' }"); |
| qobject_unref(rsp); |
| } |
| |
| static void migrate_continue(QTestState *who, const char *state) |
| { |
| QDict *rsp; |
| |
| rsp = wait_command(who, |
| "{ 'execute': 'migrate-continue'," |
| " 'arguments': { 'state': %s } }", |
| state); |
| qobject_unref(rsp); |
| } |
| |
| static void migrate_recover(QTestState *who, const char *uri) |
| { |
| QDict *rsp; |
| |
| rsp = wait_command(who, |
| "{ 'execute': 'migrate-recover', " |
| " 'id': 'recover-cmd', " |
| " 'arguments': { 'uri': %s } }", |
| uri); |
| qobject_unref(rsp); |
| } |
| |
| static void migrate_set_capability(QTestState *who, const char *capability, |
| bool value) |
| { |
| QDict *rsp; |
| |
| rsp = qtest_qmp(who, |
| "{ 'execute': 'migrate-set-capabilities'," |
| "'arguments': { " |
| "'capabilities': [ { " |
| "'capability': %s, 'state': %i } ] } }", |
| capability, value); |
| g_assert(qdict_haskey(rsp, "return")); |
| qobject_unref(rsp); |
| } |
| |
| /* |
| * Send QMP command "migrate". |
| * Arguments are built from @fmt... (formatted like |
| * qobject_from_jsonf_nofail()) with "uri": @uri spliced in. |
| */ |
| GCC_FMT_ATTR(3, 4) |
| static void migrate(QTestState *who, const char *uri, const char *fmt, ...) |
| { |
| va_list ap; |
| QDict *args, *rsp; |
| |
| va_start(ap, fmt); |
| args = qdict_from_vjsonf_nofail(fmt, ap); |
| va_end(ap); |
| |
| g_assert(!qdict_haskey(args, "uri")); |
| qdict_put_str(args, "uri", uri); |
| |
| rsp = qtest_qmp(who, "{ 'execute': 'migrate', 'arguments': %p}", args); |
| |
| g_assert(qdict_haskey(rsp, "return")); |
| qobject_unref(rsp); |
| } |
| |
| static void migrate_postcopy_start(QTestState *from, QTestState *to) |
| { |
| QDict *rsp; |
| |
| rsp = wait_command(from, "{ 'execute': 'migrate-start-postcopy' }"); |
| qobject_unref(rsp); |
| |
| if (!got_stop) { |
| qtest_qmp_eventwait(from, "STOP"); |
| } |
| |
| qtest_qmp_eventwait(to, "RESUME"); |
| } |
| |
| static int test_migrate_start(QTestState **from, QTestState **to, |
| const char *uri, bool hide_stderr, |
| bool use_shmem, const char *opts_src, |
| const char *opts_dst) |
| { |
| gchar *cmd_src, *cmd_dst; |
| char *bootpath = NULL; |
| char *extra_opts = NULL; |
| char *shmem_path = NULL; |
| const char *arch = qtest_get_arch(); |
| const char *accel = "kvm:tcg"; |
| |
| opts_src = opts_src ? opts_src : ""; |
| opts_dst = opts_dst ? opts_dst : ""; |
| |
| if (use_shmem) { |
| if (!g_file_test("/dev/shm", G_FILE_TEST_IS_DIR)) { |
| g_test_skip("/dev/shm is not supported"); |
| return -1; |
| } |
| shmem_path = g_strdup_printf("/dev/shm/qemu-%d", getpid()); |
| } |
| |
| got_stop = false; |
| bootpath = g_strdup_printf("%s/bootsect", tmpfs); |
| if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) { |
| /* the assembled x86 boot sector should be exactly one sector large */ |
| assert(sizeof(x86_bootsect) == 512); |
| init_bootfile(bootpath, x86_bootsect, sizeof(x86_bootsect)); |
| extra_opts = use_shmem ? get_shmem_opts("150M", shmem_path) : NULL; |
| cmd_src = g_strdup_printf("-machine accel=%s -m 150M" |
| " -name source,debug-threads=on" |
| " -serial file:%s/src_serial" |
| " -drive file=%s,format=raw %s %s", |
| accel, tmpfs, bootpath, |
| extra_opts ? extra_opts : "", opts_src); |
| cmd_dst = g_strdup_printf("-machine accel=%s -m 150M" |
| " -name target,debug-threads=on" |
| " -serial file:%s/dest_serial" |
| " -drive file=%s,format=raw" |
| " -incoming %s %s %s", |
| accel, tmpfs, bootpath, uri, |
| extra_opts ? extra_opts : "", opts_dst); |
| start_address = X86_TEST_MEM_START; |
| end_address = X86_TEST_MEM_END; |
| } else if (g_str_equal(arch, "s390x")) { |
| init_bootfile(bootpath, s390x_elf, sizeof(s390x_elf)); |
| extra_opts = use_shmem ? get_shmem_opts("128M", shmem_path) : NULL; |
| cmd_src = g_strdup_printf("-machine accel=%s -m 128M" |
| " -name source,debug-threads=on" |
| " -serial file:%s/src_serial -bios %s %s %s", |
| accel, tmpfs, bootpath, |
| extra_opts ? extra_opts : "", opts_src); |
| cmd_dst = g_strdup_printf("-machine accel=%s -m 128M" |
| " -name target,debug-threads=on" |
| " -serial file:%s/dest_serial -bios %s" |
| " -incoming %s %s %s", |
| accel, tmpfs, bootpath, uri, |
| extra_opts ? extra_opts : "", opts_dst); |
| start_address = S390_TEST_MEM_START; |
| end_address = S390_TEST_MEM_END; |
| } else if (strcmp(arch, "ppc64") == 0) { |
| extra_opts = use_shmem ? get_shmem_opts("256M", shmem_path) : NULL; |
| cmd_src = g_strdup_printf("-machine accel=%s -m 256M -nodefaults" |
| " -name source,debug-threads=on" |
| " -serial file:%s/src_serial" |
| " -prom-env 'use-nvramrc?=true' -prom-env " |
| "'nvramrc=hex .\" _\" begin %x %x " |
| "do i c@ 1 + i c! 1000 +loop .\" B\" 0 " |
| "until' %s %s", accel, tmpfs, end_address, |
| start_address, extra_opts ? extra_opts : "", |
| opts_src); |
| cmd_dst = g_strdup_printf("-machine accel=%s -m 256M" |
| " -name target,debug-threads=on" |
| " -serial file:%s/dest_serial" |
| " -incoming %s %s %s", |
| accel, tmpfs, uri, |
| extra_opts ? extra_opts : "", opts_dst); |
| |
| start_address = PPC_TEST_MEM_START; |
| end_address = PPC_TEST_MEM_END; |
| } else if (strcmp(arch, "aarch64") == 0) { |
| init_bootfile(bootpath, aarch64_kernel, sizeof(aarch64_kernel)); |
| extra_opts = use_shmem ? get_shmem_opts("150M", shmem_path) : NULL; |
| cmd_src = g_strdup_printf("-machine virt,accel=%s,gic-version=max " |
| "-name vmsource,debug-threads=on -cpu max " |
| "-m 150M -serial file:%s/src_serial " |
| "-kernel %s %s %s", |
| accel, tmpfs, bootpath, |
| extra_opts ? extra_opts : "", opts_src); |
| cmd_dst = g_strdup_printf("-machine virt,accel=%s,gic-version=max " |
| "-name vmdest,debug-threads=on -cpu max " |
| "-m 150M -serial file:%s/dest_serial " |
| "-kernel %s " |
| "-incoming %s %s %s", |
| accel, tmpfs, bootpath, uri, |
| extra_opts ? extra_opts : "", opts_dst); |
| |
| start_address = ARM_TEST_MEM_START; |
| end_address = ARM_TEST_MEM_END; |
| |
| g_assert(sizeof(aarch64_kernel) <= ARM_TEST_MAX_KERNEL_SIZE); |
| } else { |
| g_assert_not_reached(); |
| } |
| |
| g_free(bootpath); |
| g_free(extra_opts); |
| |
| if (hide_stderr) { |
| gchar *tmp; |
| tmp = g_strdup_printf("%s 2>/dev/null", cmd_src); |
| g_free(cmd_src); |
| cmd_src = tmp; |
| |
| tmp = g_strdup_printf("%s 2>/dev/null", cmd_dst); |
| g_free(cmd_dst); |
| cmd_dst = tmp; |
| } |
| |
| *from = qtest_init(cmd_src); |
| g_free(cmd_src); |
| |
| *to = qtest_init(cmd_dst); |
| g_free(cmd_dst); |
| |
| /* |
| * Remove shmem file immediately to avoid memory leak in test failed case. |
| * It's valid becase QEMU has already opened this file |
| */ |
| if (use_shmem) { |
| unlink(shmem_path); |
| g_free(shmem_path); |
| } |
| |
| return 0; |
| } |
| |
| static void test_migrate_end(QTestState *from, QTestState *to, bool test_dest) |
| { |
| unsigned char dest_byte_a, dest_byte_b, dest_byte_c, dest_byte_d; |
| |
| qtest_quit(from); |
| |
| if (test_dest) { |
| qtest_memread(to, start_address, &dest_byte_a, 1); |
| |
| /* Destination still running, wait for a byte to change */ |
| do { |
| qtest_memread(to, start_address, &dest_byte_b, 1); |
| usleep(1000 * 10); |
| } while (dest_byte_a == dest_byte_b); |
| |
| qtest_qmp_discard_response(to, "{ 'execute' : 'stop'}"); |
| |
| /* With it stopped, check nothing changes */ |
| qtest_memread(to, start_address, &dest_byte_c, 1); |
| usleep(1000 * 200); |
| qtest_memread(to, start_address, &dest_byte_d, 1); |
| g_assert_cmpint(dest_byte_c, ==, dest_byte_d); |
| |
| check_guests_ram(to); |
| } |
| |
| qtest_quit(to); |
| |
| cleanup("bootsect"); |
| cleanup("migsocket"); |
| cleanup("src_serial"); |
| cleanup("dest_serial"); |
| } |
| |
| static void deprecated_set_downtime(QTestState *who, const double value) |
| { |
| QDict *rsp; |
| |
| rsp = qtest_qmp(who, |
| "{ 'execute': 'migrate_set_downtime'," |
| " 'arguments': { 'value': %f } }", value); |
| g_assert(qdict_haskey(rsp, "return")); |
| qobject_unref(rsp); |
| migrate_check_parameter_int(who, "downtime-limit", value * 1000); |
| } |
| |
| static void deprecated_set_speed(QTestState *who, long long value) |
| { |
| QDict *rsp; |
| |
| rsp = qtest_qmp(who, "{ 'execute': 'migrate_set_speed'," |
| "'arguments': { 'value': %lld } }", value); |
| g_assert(qdict_haskey(rsp, "return")); |
| qobject_unref(rsp); |
| migrate_check_parameter_int(who, "max-bandwidth", value); |
| } |
| |
| static void deprecated_set_cache_size(QTestState *who, long long value) |
| { |
| QDict *rsp; |
| |
| rsp = qtest_qmp(who, "{ 'execute': 'migrate-set-cache-size'," |
| "'arguments': { 'value': %lld } }", value); |
| g_assert(qdict_haskey(rsp, "return")); |
| qobject_unref(rsp); |
| migrate_check_parameter_int(who, "xbzrle-cache-size", value); |
| } |
| |
| static void test_deprecated(void) |
| { |
| QTestState *from; |
| |
| from = qtest_init("-machine none"); |
| |
| deprecated_set_downtime(from, 0.12345); |
| deprecated_set_speed(from, 12345); |
| deprecated_set_cache_size(from, 4096); |
| |
| qtest_quit(from); |
| } |
| |
| static int migrate_postcopy_prepare(QTestState **from_ptr, |
| QTestState **to_ptr, |
| bool hide_error) |
| { |
| char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); |
| QTestState *from, *to; |
| |
| if (test_migrate_start(&from, &to, uri, hide_error, false, NULL, NULL)) { |
| return -1; |
| } |
| |
| migrate_set_capability(from, "postcopy-ram", true); |
| migrate_set_capability(to, "postcopy-ram", true); |
| migrate_set_capability(to, "postcopy-blocktime", true); |
| |
| /* 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. |
| */ |
| migrate_set_parameter_int(from, "max-bandwidth", 30000000); |
| migrate_set_parameter_int(from, "downtime-limit", 1); |
| |
| /* Wait for the first serial output from the source */ |
| wait_for_serial("src_serial"); |
| |
| migrate(from, uri, "{}"); |
| g_free(uri); |
| |
| wait_for_migration_pass(from); |
| |
| *from_ptr = from; |
| *to_ptr = to; |
| |
| return 0; |
| } |
| |
| static void migrate_postcopy_complete(QTestState *from, QTestState *to) |
| { |
| wait_for_migration_complete(from); |
| |
| /* Make sure we get at least one "B" on destination */ |
| wait_for_serial("dest_serial"); |
| |
| if (uffd_feature_thread_id) { |
| read_blocktime(to); |
| } |
| |
| test_migrate_end(from, to, true); |
| } |
| |
| static void test_postcopy(void) |
| { |
| QTestState *from, *to; |
| |
| if (migrate_postcopy_prepare(&from, &to, false)) { |
| return; |
| } |
| migrate_postcopy_start(from, to); |
| migrate_postcopy_complete(from, to); |
| } |
| |
| static void test_postcopy_recovery(void) |
| { |
| QTestState *from, *to; |
| char *uri; |
| |
| if (migrate_postcopy_prepare(&from, &to, true)) { |
| return; |
| } |
| |
| /* Turn postcopy speed down, 4K/s is slow enough on any machines */ |
| migrate_set_parameter_int(from, "max-postcopy-bandwidth", 4096); |
| |
| /* Now we start the postcopy */ |
| migrate_postcopy_start(from, to); |
| |
| /* |
| * Wait until postcopy is really started; we can only run the |
| * migrate-pause command during a postcopy |
| */ |
| wait_for_migration_status(from, "postcopy-active", NULL); |
| |
| /* |
| * Manually stop the postcopy migration. This emulates a network |
| * failure with the migration socket |
| */ |
| migrate_pause(from); |
| |
| /* |
| * Wait for destination side to reach postcopy-paused state. The |
| * migrate-recover command can only succeed if destination machine |
| * is in the paused state |
| */ |
| wait_for_migration_status(to, "postcopy-paused", |
| (const char * []) { "failed", "active", |
| "completed", NULL }); |
| |
| /* |
| * Create a new socket to emulate a new channel that is different |
| * from the broken migration channel; tell the destination to |
| * listen to the new port |
| */ |
| uri = g_strdup_printf("unix:%s/migsocket-recover", tmpfs); |
| migrate_recover(to, uri); |
| |
| /* |
| * Try to rebuild the migration channel using the resume flag and |
| * the newly created channel |
| */ |
| wait_for_migration_status(from, "postcopy-paused", |
| (const char * []) { "failed", "active", |
| "completed", NULL }); |
| migrate(from, uri, "{'resume': true}"); |
| g_free(uri); |
| |
| /* Restore the postcopy bandwidth to unlimited */ |
| migrate_set_parameter_int(from, "max-postcopy-bandwidth", 0); |
| |
| migrate_postcopy_complete(from, to); |
| } |
| |
| static void wait_for_migration_fail(QTestState *from, bool allow_active) |
| { |
| QDict *rsp_return; |
| char *status; |
| bool failed; |
| |
| do { |
| status = migrate_query_status(from); |
| bool result = !strcmp(status, "setup") || !strcmp(status, "failed") || |
| (allow_active && !strcmp(status, "active")); |
| if (!result) { |
| fprintf(stderr, "%s: unexpected status status=%s allow_active=%d\n", |
| __func__, status, allow_active); |
| } |
| g_assert(result); |
| failed = !strcmp(status, "failed"); |
| g_free(status); |
| } while (!failed); |
| |
| /* Is the machine currently running? */ |
| rsp_return = wait_command(from, "{ 'execute': 'query-status' }"); |
| g_assert(qdict_haskey(rsp_return, "running")); |
| g_assert(qdict_get_bool(rsp_return, "running")); |
| qobject_unref(rsp_return); |
| } |
| |
| static void test_baddest(void) |
| { |
| QTestState *from, *to; |
| |
| if (test_migrate_start(&from, &to, "tcp:0:0", true, false, NULL, NULL)) { |
| return; |
| } |
| migrate(from, "tcp:0:0", "{}"); |
| wait_for_migration_fail(from, false); |
| test_migrate_end(from, to, false); |
| } |
| |
| static void test_precopy_unix(void) |
| { |
| char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); |
| QTestState *from, *to; |
| |
| if (test_migrate_start(&from, &to, uri, false, false, NULL, NULL)) { |
| return; |
| } |
| |
| /* 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. |
| */ |
| /* 1 ms should make it not converge*/ |
| migrate_set_parameter_int(from, "downtime-limit", 1); |
| /* 1GB/s */ |
| migrate_set_parameter_int(from, "max-bandwidth", 1000000000); |
| |
| /* Wait for the first serial output from the source */ |
| wait_for_serial("src_serial"); |
| |
| migrate(from, uri, "{}"); |
| |
| wait_for_migration_pass(from); |
| |
| /* 300 ms should converge */ |
| migrate_set_parameter_int(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, true); |
| g_free(uri); |
| } |
| |
| #if 0 |
| /* Currently upset on aarch64 TCG */ |
| static void test_ignore_shared(void) |
| { |
| char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); |
| QTestState *from, *to; |
| |
| if (test_migrate_start(&from, &to, uri, false, true, NULL, NULL)) { |
| return; |
| } |
| |
| migrate_set_capability(from, "x-ignore-shared", true); |
| migrate_set_capability(to, "x-ignore-shared", true); |
| |
| /* Wait for the first serial output from the source */ |
| wait_for_serial("src_serial"); |
| |
| migrate(from, uri, "{}"); |
| |
| wait_for_migration_pass(from); |
| |
| if (!got_stop) { |
| qtest_qmp_eventwait(from, "STOP"); |
| } |
| |
| qtest_qmp_eventwait(to, "RESUME"); |
| |
| wait_for_serial("dest_serial"); |
| wait_for_migration_complete(from); |
| |
| /* Check whether shared RAM has been really skipped */ |
| g_assert_cmpint(read_ram_property_int(from, "transferred"), <, 1024 * 1024); |
| |
| test_migrate_end(from, to, true); |
| g_free(uri); |
| } |
| #endif |
| |
| static void test_xbzrle(const char *uri) |
| { |
| QTestState *from, *to; |
| |
| if (test_migrate_start(&from, &to, uri, false, false, NULL, NULL)) { |
| return; |
| } |
| |
| /* |
| * 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. |
| */ |
| /* 1 ms should make it not converge*/ |
| migrate_set_parameter_int(from, "downtime-limit", 1); |
| /* 1GB/s */ |
| migrate_set_parameter_int(from, "max-bandwidth", 1000000000); |
| |
| migrate_set_parameter_int(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 should converge */ |
| migrate_set_parameter_int(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, true); |
| } |
| |
| static void test_xbzrle_unix(void) |
| { |
| char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); |
| |
| test_xbzrle(uri); |
| g_free(uri); |
| } |
| |
| static void test_precopy_tcp(void) |
| { |
| char *uri; |
| QTestState *from, *to; |
| |
| if (test_migrate_start(&from, &to, "tcp:127.0.0.1:0", false, false, |
| NULL, NULL)) { |
| return; |
| } |
| |
| /* |
| * 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. |
| */ |
| /* 1 ms should make it not converge*/ |
| migrate_set_parameter_int(from, "downtime-limit", 1); |
| /* 1GB/s */ |
| migrate_set_parameter_int(from, "max-bandwidth", 1000000000); |
| |
| /* Wait for the first serial output from the source */ |
| wait_for_serial("src_serial"); |
| |
| uri = migrate_get_socket_address(to, "socket-address"); |
| |
| migrate(from, uri, "{}"); |
| |
| wait_for_migration_pass(from); |
| |
| /* 300ms should converge */ |
| migrate_set_parameter_int(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, true); |
| g_free(uri); |
| } |
| |
| static void test_migrate_fd_proto(void) |
| { |
| QTestState *from, *to; |
| int ret; |
| int pair[2]; |
| QDict *rsp; |
| const char *error_desc; |
| |
| if (test_migrate_start(&from, &to, "defer", false, false, NULL, NULL)) { |
| return; |
| } |
| |
| /* |
| * 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. |
| */ |
| /* 1 ms should make it not converge */ |
| migrate_set_parameter_int(from, "downtime-limit", 1); |
| /* 1GB/s */ |
| migrate_set_parameter_int(from, "max-bandwidth", 1000000000); |
| |
| /* Wait for the first serial output from the source */ |
| wait_for_serial("src_serial"); |
| |
| /* Create two connected sockets for migration */ |
| ret = socketpair(PF_LOCAL, SOCK_STREAM, 0, pair); |
| g_assert_cmpint(ret, ==, 0); |
| |
| /* Send the 1st socket to the target */ |
| rsp = wait_command_fd(to, pair[0], |
| "{ 'execute': 'getfd'," |
| " 'arguments': { 'fdname': 'fd-mig' }}"); |
| qobject_unref(rsp); |
| close(pair[0]); |
| |
| /* Start incoming migration from the 1st socket */ |
| rsp = wait_command(to, "{ 'execute': 'migrate-incoming'," |
| " 'arguments': { 'uri': 'fd:fd-mig' }}"); |
| qobject_unref(rsp); |
| |
| /* Send the 2nd socket to the target */ |
| rsp = wait_command_fd(from, pair[1], |
| "{ 'execute': 'getfd'," |
| " 'arguments': { 'fdname': 'fd-mig' }}"); |
| qobject_unref(rsp); |
| close(pair[1]); |
| |
| /* Start migration to the 2nd socket*/ |
| migrate(from, "fd:fd-mig", "{}"); |
| |
| wait_for_migration_pass(from); |
| |
| /* 300ms should converge */ |
| migrate_set_parameter_int(from, "downtime-limit", 300); |
| |
| if (!got_stop) { |
| qtest_qmp_eventwait(from, "STOP"); |
| } |
| qtest_qmp_eventwait(to, "RESUME"); |
| |
| /* Test closing fds */ |
| /* We assume, that QEMU removes named fd from its list, |
| * so this should fail */ |
| rsp = qtest_qmp(from, "{ 'execute': 'closefd'," |
| " 'arguments': { 'fdname': 'fd-mig' }}"); |
| g_assert_true(qdict_haskey(rsp, "error")); |
| error_desc = qdict_get_str(qdict_get_qdict(rsp, "error"), "desc"); |
| g_assert_cmpstr(error_desc, ==, "File descriptor named 'fd-mig' not found"); |
| qobject_unref(rsp); |
| |
| rsp = qtest_qmp(to, "{ 'execute': 'closefd'," |
| " 'arguments': { 'fdname': 'fd-mig' }}"); |
| g_assert_true(qdict_haskey(rsp, "error")); |
| error_desc = qdict_get_str(qdict_get_qdict(rsp, "error"), "desc"); |
| g_assert_cmpstr(error_desc, ==, "File descriptor named 'fd-mig' not found"); |
| qobject_unref(rsp); |
| |
| /* Complete migration */ |
| wait_for_serial("dest_serial"); |
| wait_for_migration_complete(from); |
| test_migrate_end(from, to, true); |
| } |
| |
| static void do_test_validate_uuid(const char *uuid_arg_src, |
| const char *uuid_arg_dst, |
| bool should_fail, bool hide_stderr) |
| { |
| char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); |
| QTestState *from, *to; |
| |
| if (test_migrate_start(&from, &to, uri, hide_stderr, false, |
| uuid_arg_src, uuid_arg_dst)) { |
| return; |
| } |
| |
| /* |
| * UUID validation is at the begin of migration. So, the main process of |
| * migration is not interesting for us here. Thus, set huge downtime for |
| * very fast migration. |
| */ |
| migrate_set_parameter_int(from, "downtime-limit", 1000000); |
| migrate_set_capability(from, "validate-uuid", true); |
| |
| /* Wait for the first serial output from the source */ |
| wait_for_serial("src_serial"); |
| |
| migrate(from, uri, "{}"); |
| |
| if (should_fail) { |
| qtest_set_expected_status(to, 1); |
| wait_for_migration_fail(from, true); |
| } else { |
| wait_for_migration_complete(from); |
| } |
| |
| test_migrate_end(from, to, false); |
| g_free(uri); |
| } |
| |
| static void test_validate_uuid(void) |
| { |
| do_test_validate_uuid("-uuid 11111111-1111-1111-1111-111111111111", |
| "-uuid 11111111-1111-1111-1111-111111111111", |
| false, false); |
| } |
| |
| static void test_validate_uuid_error(void) |
| { |
| do_test_validate_uuid("-uuid 11111111-1111-1111-1111-111111111111", |
| "-uuid 22222222-2222-2222-2222-222222222222", |
| true, true); |
| } |
| |
| static void test_validate_uuid_src_not_set(void) |
| { |
| do_test_validate_uuid(NULL, "-uuid 11111111-1111-1111-1111-111111111111", |
| false, true); |
| } |
| |
| static void test_validate_uuid_dst_not_set(void) |
| { |
| do_test_validate_uuid("-uuid 11111111-1111-1111-1111-111111111111", NULL, |
| false, true); |
| } |
| |
| static void test_migrate_auto_converge(void) |
| { |
| char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); |
| QTestState *from, *to; |
| int64_t remaining, percentage; |
| |
| /* |
| * We want the test to be stable and as fast as possible. |
| * E.g., with 1Gb/s bandwith migration may pass without throttling, |
| * so we need to decrease a bandwidth. |
| */ |
| const int64_t init_pct = 5, inc_pct = 50, max_pct = 95; |
| const int64_t max_bandwidth = 400000000; /* ~400Mb/s */ |
| const int64_t downtime_limit = 250; /* 250ms */ |
| /* |
| * We migrate through unix-socket (> 500Mb/s). |
| * Thus, expected migration speed ~= bandwidth limit (< 500Mb/s). |
| * So, we can predict expected_threshold |
| */ |
| const int64_t expected_threshold = max_bandwidth * downtime_limit / 1000; |
| |
| if (test_migrate_start(&from, &to, uri, false, false, NULL, NULL)) { |
| return; |
| } |
| |
| migrate_set_capability(from, "auto-converge", true); |
| migrate_set_parameter_int(from, "cpu-throttle-initial", init_pct); |
| migrate_set_parameter_int(from, "cpu-throttle-increment", inc_pct); |
| migrate_set_parameter_int(from, "max-cpu-throttle", max_pct); |
| |
| /* |
| * Set the initial parameters so that the migration could not converge |
| * without throttling. |
| */ |
| migrate_set_parameter_int(from, "downtime-limit", 1); |
| migrate_set_parameter_int(from, "max-bandwidth", 100000000); /* ~100Mb/s */ |
| |
| /* To check remaining size after precopy */ |
| migrate_set_capability(from, "pause-before-switchover", true); |
| |
| /* Wait for the first serial output from the source */ |
| wait_for_serial("src_serial"); |
| |
| migrate(from, uri, "{}"); |
| |
| /* Wait for throttling begins */ |
| percentage = 0; |
| while (percentage == 0) { |
| percentage = read_migrate_property_int(from, "cpu-throttle-percentage"); |
| usleep(100); |
| g_assert_false(got_stop); |
| } |
| /* The first percentage of throttling should be equal to init_pct */ |
| g_assert_cmpint(percentage, ==, init_pct); |
| /* Now, when we tested that throttling works, let it converge */ |
| migrate_set_parameter_int(from, "downtime-limit", downtime_limit); |
| migrate_set_parameter_int(from, "max-bandwidth", max_bandwidth); |
| |
| /* |
| * Wait for pre-switchover status to check last throttle percentage |
| * and remaining. These values will be zeroed later |
| */ |
| wait_for_migration_status(from, "pre-switchover", NULL); |
| |
| /* The final percentage of throttling shouldn't be greater than max_pct */ |
| percentage = read_migrate_property_int(from, "cpu-throttle-percentage"); |
| g_assert_cmpint(percentage, <=, max_pct); |
| |
| remaining = read_ram_property_int(from, "remaining"); |
| g_assert_cmpint(remaining, <, expected_threshold); |
| |
| migrate_continue(from, "pre-switchover"); |
| |
| qtest_qmp_eventwait(to, "RESUME"); |
| |
| wait_for_serial("dest_serial"); |
| wait_for_migration_complete(from); |
| |
| g_free(uri); |
| |
| test_migrate_end(from, to, true); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| char template[] = "/tmp/migration-test-XXXXXX"; |
| int ret; |
| |
| g_test_init(&argc, &argv, NULL); |
| |
| if (!ufd_version_check()) { |
| return g_test_run(); |
| } |
| |
| /* |
| * On ppc64, the test only works with kvm-hv, but not with kvm-pr and TCG |
| * is touchy due to race conditions on dirty bits (especially on PPC for |
| * some reason) |
| */ |
| if (g_str_equal(qtest_get_arch(), "ppc64") && |
| access("/sys/module/kvm_hv", F_OK)) { |
| g_test_message("Skipping test: kvm_hv not available"); |
| return g_test_run(); |
| } |
| |
| /* |
| * Similar to ppc64, s390x seems to be touchy with TCG, so disable it |
| * there until the problems are resolved |
| */ |
| if (g_str_equal(qtest_get_arch(), "s390x")) { |
| #if defined(HOST_S390X) |
| if (access("/dev/kvm", R_OK | W_OK)) { |
| g_test_message("Skipping test: kvm not available"); |
| return g_test_run(); |
| } |
| #else |
| g_test_message("Skipping test: Need s390x host to work properly"); |
| return g_test_run(); |
| #endif |
| } |
| |
| tmpfs = mkdtemp(template); |
| if (!tmpfs) { |
| g_test_message("mkdtemp on path (%s): %s", template, strerror(errno)); |
| } |
| g_assert(tmpfs); |
| |
| module_call_init(MODULE_INIT_QOM); |
| |
| qtest_add_func("/migration/postcopy/unix", test_postcopy); |
| qtest_add_func("/migration/postcopy/recovery", test_postcopy_recovery); |
| qtest_add_func("/migration/deprecated", test_deprecated); |
| qtest_add_func("/migration/bad_dest", test_baddest); |
| qtest_add_func("/migration/precopy/unix", test_precopy_unix); |
| qtest_add_func("/migration/precopy/tcp", test_precopy_tcp); |
| /* qtest_add_func("/migration/ignore_shared", test_ignore_shared); */ |
| qtest_add_func("/migration/xbzrle/unix", test_xbzrle_unix); |
| qtest_add_func("/migration/fd_proto", test_migrate_fd_proto); |
| qtest_add_func("/migration/validate_uuid", test_validate_uuid); |
| qtest_add_func("/migration/validate_uuid_error", test_validate_uuid_error); |
| qtest_add_func("/migration/validate_uuid_src_not_set", |
| test_validate_uuid_src_not_set); |
| qtest_add_func("/migration/validate_uuid_dst_not_set", |
| test_validate_uuid_dst_not_set); |
| |
| qtest_add_func("/migration/auto_converge", test_migrate_auto_converge); |
| |
| ret = g_test_run(); |
| |
| g_assert_cmpint(ret, ==, 0); |
| |
| ret = rmdir(tmpfs); |
| if (ret != 0) { |
| g_test_message("unable to rmdir: path (%s): %s", |
| tmpfs, strerror(errno)); |
| } |
| |
| return ret; |
| } |
