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Diffstat (limited to 'tests/qtest/migration-test.c')
| -rw-r--r-- | tests/qtest/migration-test.c | 1281 |
1 files changed, 1281 insertions, 0 deletions
diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c new file mode 100644 index 0000000000..53afec4395 --- /dev/null +++ b/tests/qtest/migration-test.c @@ -0,0 +1,1281 @@ +/* + * 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 "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-helpers.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; +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); +} + +/* + * 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 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 *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); +} + +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"); +} + +typedef struct { + bool hide_stderr; + bool use_shmem; + char *opts_source; + char *opts_target; +} MigrateStart; + +static MigrateStart *migrate_start_new(void) +{ + MigrateStart *args = g_new0(MigrateStart, 1); + + args->opts_source = g_strdup(""); + args->opts_target = g_strdup(""); + return args; +} + +static void migrate_start_destroy(MigrateStart *args) +{ + g_free(args->opts_source); + g_free(args->opts_target); + g_free(args); +} + +static int test_migrate_start(QTestState **from, QTestState **to, + const char *uri, MigrateStart *args) +{ + gchar *arch_source, *arch_target; + gchar *cmd_source, *cmd_target; + const gchar *ignore_stderr; + char *bootpath = NULL; + char *shmem_opts; + char *shmem_path; + const char *arch = qtest_get_arch(); + const char *machine_opts = NULL; + const char *memory_size; + + if (args->use_shmem) { + if (!g_file_test("/dev/shm", G_FILE_TEST_IS_DIR)) { + g_test_skip("/dev/shm is not supported"); + return -1; + } + } + + 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)); + memory_size = "150M"; + arch_source = g_strdup_printf("-drive file=%s,format=raw", bootpath); + arch_target = g_strdup(arch_source); + 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)); + memory_size = "128M"; + arch_source = g_strdup_printf("-bios %s", bootpath); + arch_target = g_strdup(arch_source); + start_address = S390_TEST_MEM_START; + end_address = S390_TEST_MEM_END; + } else if (strcmp(arch, "ppc64") == 0) { + machine_opts = "vsmt=8"; + memory_size = "256M"; + arch_source = g_strdup_printf("-nodefaults " + "-prom-env 'use-nvramrc?=true' -prom-env " + "'nvramrc=hex .\" _\" begin %x %x " + "do i c@ 1 + i c! 1000 +loop .\" B\" 0 " + "until'", end_address, start_address); + arch_target = g_strdup(""); + 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)); + machine_opts = "virt,gic-version=max"; + memory_size = "150M"; + arch_source = g_strdup_printf("-cpu max " + "-kernel %s", + bootpath); + arch_target = g_strdup(arch_source); + 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); + + if (args->hide_stderr) { + ignore_stderr = "2>/dev/null"; + } else { + ignore_stderr = ""; + } + + if (args->use_shmem) { + shmem_path = g_strdup_printf("/dev/shm/qemu-%d", getpid()); + shmem_opts = g_strdup_printf( + "-object memory-backend-file,id=mem0,size=%s" + ",mem-path=%s,share=on -numa node,memdev=mem0", + memory_size, shmem_path); + } else { + shmem_path = NULL; + shmem_opts = g_strdup(""); + } + + cmd_source = g_strdup_printf("-accel kvm -accel tcg%s%s " + "-name source,debug-threads=on " + "-m %s " + "-serial file:%s/src_serial " + "%s %s %s %s", + machine_opts ? " -machine " : "", + machine_opts ? machine_opts : "", + memory_size, tmpfs, + arch_source, shmem_opts, args->opts_source, + ignore_stderr); + g_free(arch_source); + *from = qtest_init(cmd_source); + g_free(cmd_source); + + cmd_target = g_strdup_printf("-accel kvm -accel tcg%s%s " + "-name target,debug-threads=on " + "-m %s " + "-serial file:%s/dest_serial " + "-incoming %s " + "%s %s %s %s", + machine_opts ? " -machine " : "", + machine_opts ? machine_opts : "", + memory_size, tmpfs, uri, + arch_target, shmem_opts, + args->opts_target, ignore_stderr); + g_free(arch_target); + *to = qtest_init(cmd_target); + g_free(cmd_target); + + g_free(shmem_opts); + /* + * Remove shmem file immediately to avoid memory leak in test failed case. + * It's valid becase QEMU has already opened this file + */ + if (args->use_shmem) { + unlink(shmem_path); + g_free(shmem_path); + } + + migrate_start_destroy(args); + 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, + MigrateStart *args) +{ + char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + QTestState *from, *to; + + if (test_migrate_start(&from, &to, uri, args)) { + 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_qmp(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) +{ + MigrateStart *args = migrate_start_new(); + QTestState *from, *to; + + if (migrate_postcopy_prepare(&from, &to, args)) { + return; + } + migrate_postcopy_start(from, to); + migrate_postcopy_complete(from, to); +} + +static void test_postcopy_recovery(void) +{ + MigrateStart *args = migrate_start_new(); + QTestState *from, *to; + char *uri; + + args->hide_stderr = true; + + if (migrate_postcopy_prepare(&from, &to, args)) { + 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_qmp(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 test_baddest(void) +{ + MigrateStart *args = migrate_start_new(); + QTestState *from, *to; + + args->hide_stderr = true; + + if (test_migrate_start(&from, &to, "tcp:0:0", args)) { + return; + } + migrate_qmp(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); + MigrateStart *args = migrate_start_new(); + QTestState *from, *to; + + if (test_migrate_start(&from, &to, uri, args)) { + 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_qmp(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_qmp(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) +{ + MigrateStart *args = migrate_start_new(); + QTestState *from, *to; + + if (test_migrate_start(&from, &to, uri, args)) { + 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_qmp(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) +{ + MigrateStart *args = migrate_start_new(); + char *uri; + QTestState *from, *to; + + if (test_migrate_start(&from, &to, "tcp:127.0.0.1:0", args)) { + 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_qmp(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) +{ + MigrateStart *args = migrate_start_new(); + QTestState *from, *to; + int ret; + int pair[2]; + QDict *rsp; + const char *error_desc; + + if (test_migrate_start(&from, &to, "defer", args)) { + 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_qmp(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(MigrateStart *args, bool should_fail) +{ + char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + QTestState *from, *to; + + if (test_migrate_start(&from, &to, uri, args)) { + 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_qmp(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) +{ + MigrateStart *args = migrate_start_new(); + + args->opts_source = g_strdup("-uuid 11111111-1111-1111-1111-111111111111"); + args->opts_target = g_strdup("-uuid 11111111-1111-1111-1111-111111111111"); + do_test_validate_uuid(args, false); +} + +static void test_validate_uuid_error(void) +{ + MigrateStart *args = migrate_start_new(); + + args->opts_source = g_strdup("-uuid 11111111-1111-1111-1111-111111111111"); + args->opts_target = g_strdup("-uuid 22222222-2222-2222-2222-222222222222"); + args->hide_stderr = true; + do_test_validate_uuid(args, true); +} + +static void test_validate_uuid_src_not_set(void) +{ + MigrateStart *args = migrate_start_new(); + + args->opts_target = g_strdup("-uuid 22222222-2222-2222-2222-222222222222"); + args->hide_stderr = true; + do_test_validate_uuid(args, false); +} + +static void test_validate_uuid_dst_not_set(void) +{ + MigrateStart *args = migrate_start_new(); + + args->opts_source = g_strdup("-uuid 11111111-1111-1111-1111-111111111111"); + args->hide_stderr = true; + do_test_validate_uuid(args, false); +} + +static void test_migrate_auto_converge(void) +{ + char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + MigrateStart *args = migrate_start_new(); + 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, args)) { + 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_qmp(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) || + access("/dev/kvm", R_OK | W_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; +} |