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qemu/tests/qtest/migration-test.c
Daniel P. Berrangé fd3540adb9 tests: ensure migration status isn't reported as failed 
Various methods in the migration test call 'query_migrate' to fetch the
current status and then access a particular field. Almost all of these
cases expect the migration to be in a non-failed state. In the case of
'wait_for_migration_pass' in particular, if the status is 'failed' then
it will get into an infinite loop. By validating that the status is
not 'failed' the test suite will assert rather than hang when getting
into an unexpected state.

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220426160048.812266-10-berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2022-05-16 11:46:04 +01:00

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/*
* 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/error.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 "crypto/tlscredspsk.h"
#include "migration-helpers.h"
#include "tests/migration/migration-test.h"
#ifdef CONFIG_GNUTLS
# include "tests/unit/crypto-tls-psk-helpers.h"
# ifdef CONFIG_TASN1
# include "tests/unit/crypto-tls-x509-helpers.h"
# endif /* CONFIG_TASN1 */
#endif /* CONFIG_GNUTLS */
/* For dirty ring test; so far only x86_64 is supported */
#if defined(__linux__) && defined(HOST_X86_64)
#include "linux/kvm.h"
#endif
/* 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;
/* A downtime where the test really should converge */
#define CONVERGE_DOWNTIME 1000
#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)
{
g_autofree 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;
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_not_failed(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_not_failed(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_not_failed(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)
{
g_autofree char *path = g_strdup_printf("%s/%s", tmpfs, filename);
unlink(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;
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, &error_abort);
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 char *migrate_get_parameter_str(QTestState *who,
const char *parameter)
{
QDict *rsp;
char *result;
rsp = wait_command(who, "{ 'execute': 'query-migrate-parameters' }");
result = g_strdup(qdict_get_str(rsp, parameter));
qobject_unref(rsp);
return result;
}
static void migrate_check_parameter_str(QTestState *who, const char *parameter,
const char *value)
{
g_autofree char *result = migrate_get_parameter_str(who, parameter);
g_assert_cmpstr(result, ==, value);
}
static void migrate_set_parameter_str(QTestState *who, const char *parameter,
const char *value)
{
QDict *rsp;
rsp = qtest_qmp(who,
"{ 'execute': 'migrate-set-parameters',"
"'arguments': { %s: %s } }",
parameter, value);
g_assert(qdict_haskey(rsp, "return"));
qobject_unref(rsp);
migrate_check_parameter_str(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_cancel(QTestState *who)
{
QDict *rsp;
rsp = wait_command(who, "{ 'execute': 'migrate_cancel' }");
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 {
/*
* QTEST_LOG=1 may override this. When QTEST_LOG=1, we always dump errors
* unconditionally, because it means the user would like to be verbose.
*/
bool hide_stderr;
bool use_shmem;
/* only launch the target process */
bool only_target;
/* Use dirty ring if true; dirty logging otherwise */
bool use_dirty_ring;
const char *opts_source;
const char *opts_target;
} MigrateStart;
static int test_migrate_start(QTestState **from, QTestState **to,
const char *uri, MigrateStart *args)
{
g_autofree gchar *arch_source = NULL;
g_autofree gchar *arch_target = NULL;
g_autofree gchar *cmd_source = NULL;
g_autofree gchar *cmd_target = NULL;
const gchar *ignore_stderr;
g_autofree char *bootpath = NULL;
g_autofree char *shmem_opts = NULL;
g_autofree char *shmem_path = NULL;
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";
start_address = PPC_TEST_MEM_START;
end_address = PPC_TEST_MEM_END;
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("");
} 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();
}
if (!getenv("QTEST_LOG") && 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%s -accel tcg%s%s "
"-name source,debug-threads=on "
"-m %s "
"-serial file:%s/src_serial "
"%s %s %s %s",
args->use_dirty_ring ?
",dirty-ring-size=4096" : "",
machine_opts ? " -machine " : "",
machine_opts ? machine_opts : "",
memory_size, tmpfs,
arch_source, shmem_opts,
args->opts_source ? args->opts_source : "",
ignore_stderr);
if (!args->only_target) {
*from = qtest_init(cmd_source);
}
cmd_target = g_strdup_printf("-accel kvm%s -accel tcg%s%s "
"-name target,debug-threads=on "
"-m %s "
"-serial file:%s/dest_serial "
"-incoming %s "
"%s %s %s %s",
args->use_dirty_ring ?
",dirty-ring-size=4096" : "",
machine_opts ? " -machine " : "",
machine_opts ? machine_opts : "",
memory_size, tmpfs, uri,
arch_target, shmem_opts,
args->opts_target ? args->opts_target : "",
ignore_stderr);
*to = qtest_init(cmd_target);
/*
* 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);
}
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");
}
#ifdef CONFIG_GNUTLS
struct TestMigrateTLSPSKData {
char *workdir;
char *workdiralt;
char *pskfile;
char *pskfilealt;
};
static void *
test_migrate_tls_psk_start_common(QTestState *from,
QTestState *to,
bool mismatch)
{
struct TestMigrateTLSPSKData *data =
g_new0(struct TestMigrateTLSPSKData, 1);
QDict *rsp;
data->workdir = g_strdup_printf("%s/tlscredspsk0", tmpfs);
data->pskfile = g_strdup_printf("%s/%s", data->workdir,
QCRYPTO_TLS_CREDS_PSKFILE);
mkdir(data->workdir, 0700);
test_tls_psk_init(data->pskfile);
if (mismatch) {
data->workdiralt = g_strdup_printf("%s/tlscredspskalt0", tmpfs);
data->pskfilealt = g_strdup_printf("%s/%s", data->workdiralt,
QCRYPTO_TLS_CREDS_PSKFILE);
mkdir(data->workdiralt, 0700);
test_tls_psk_init_alt(data->pskfilealt);
}
rsp = wait_command(from,
"{ 'execute': 'object-add',"
" 'arguments': { 'qom-type': 'tls-creds-psk',"
" 'id': 'tlscredspsk0',"
" 'endpoint': 'client',"
" 'dir': %s,"
" 'username': 'qemu'} }",
data->workdir);
qobject_unref(rsp);
rsp = wait_command(to,
"{ 'execute': 'object-add',"
" 'arguments': { 'qom-type': 'tls-creds-psk',"
" 'id': 'tlscredspsk0',"
" 'endpoint': 'server',"
" 'dir': %s } }",
mismatch ? data->workdiralt : data->workdir);
qobject_unref(rsp);
migrate_set_parameter_str(from, "tls-creds", "tlscredspsk0");
migrate_set_parameter_str(to, "tls-creds", "tlscredspsk0");
return data;
}
static void *
test_migrate_tls_psk_start_match(QTestState *from,
QTestState *to)
{
return test_migrate_tls_psk_start_common(from, to, false);
}
static void *
test_migrate_tls_psk_start_mismatch(QTestState *from,
QTestState *to)
{
return test_migrate_tls_psk_start_common(from, to, true);
}
static void
test_migrate_tls_psk_finish(QTestState *from,
QTestState *to,
void *opaque)
{
struct TestMigrateTLSPSKData *data = opaque;
test_tls_psk_cleanup(data->pskfile);
if (data->pskfilealt) {
test_tls_psk_cleanup(data->pskfilealt);
}
rmdir(data->workdir);
if (data->workdiralt) {
rmdir(data->workdiralt);
}
g_free(data->workdiralt);
g_free(data->pskfilealt);
g_free(data->workdir);
g_free(data->pskfile);
g_free(data);
}
#ifdef CONFIG_TASN1
typedef struct {
char *workdir;
char *keyfile;
char *cacert;
char *servercert;
char *serverkey;
char *clientcert;
char *clientkey;
} TestMigrateTLSX509Data;
typedef struct {
bool verifyclient;
bool clientcert;
bool hostileclient;
bool authzclient;
const char *certhostname;
const char *certipaddr;
} TestMigrateTLSX509;
static void *
test_migrate_tls_x509_start_common(QTestState *from,
QTestState *to,
TestMigrateTLSX509 *args)
{
TestMigrateTLSX509Data *data = g_new0(TestMigrateTLSX509Data, 1);
QDict *rsp;
data->workdir = g_strdup_printf("%s/tlscredsx5090", tmpfs);
data->keyfile = g_strdup_printf("%s/key.pem", data->workdir);
data->cacert = g_strdup_printf("%s/ca-cert.pem", data->workdir);
data->serverkey = g_strdup_printf("%s/server-key.pem", data->workdir);
data->servercert = g_strdup_printf("%s/server-cert.pem", data->workdir);
if (args->clientcert) {
data->clientkey = g_strdup_printf("%s/client-key.pem", data->workdir);
data->clientcert = g_strdup_printf("%s/client-cert.pem", data->workdir);
}
mkdir(data->workdir, 0700);
test_tls_init(data->keyfile);
g_assert(link(data->keyfile, data->serverkey) == 0);
if (args->clientcert) {
g_assert(link(data->keyfile, data->clientkey) == 0);
}
TLS_ROOT_REQ_SIMPLE(cacertreq, data->cacert);
if (args->clientcert) {
TLS_CERT_REQ_SIMPLE_CLIENT(servercertreq, cacertreq,
args->hostileclient ?
QCRYPTO_TLS_TEST_CLIENT_HOSTILE_NAME :
QCRYPTO_TLS_TEST_CLIENT_NAME,
data->clientcert);
}
TLS_CERT_REQ_SIMPLE_SERVER(clientcertreq, cacertreq,
data->servercert,
args->certhostname,
args->certipaddr);
rsp = wait_command(from,
"{ 'execute': 'object-add',"
" 'arguments': { 'qom-type': 'tls-creds-x509',"
" 'id': 'tlscredsx509client0',"
" 'endpoint': 'client',"
" 'dir': %s,"
" 'sanity-check': true,"
" 'verify-peer': true} }",
data->workdir);
qobject_unref(rsp);
migrate_set_parameter_str(from, "tls-creds", "tlscredsx509client0");
if (args->certhostname) {
migrate_set_parameter_str(from, "tls-hostname", args->certhostname);
}
rsp = wait_command(to,
"{ 'execute': 'object-add',"
" 'arguments': { 'qom-type': 'tls-creds-x509',"
" 'id': 'tlscredsx509server0',"
" 'endpoint': 'server',"
" 'dir': %s,"
" 'sanity-check': true,"
" 'verify-peer': %i} }",
data->workdir, args->verifyclient);
qobject_unref(rsp);
migrate_set_parameter_str(to, "tls-creds", "tlscredsx509server0");
if (args->authzclient) {
rsp = wait_command(to,
"{ 'execute': 'object-add',"
" 'arguments': { 'qom-type': 'authz-simple',"
" 'id': 'tlsauthz0',"
" 'identity': %s} }",
"CN=" QCRYPTO_TLS_TEST_CLIENT_NAME);
migrate_set_parameter_str(to, "tls-authz", "tlsauthz0");
}
return data;
}
/*
* The normal case: match server's cert hostname against
* whatever host we were telling QEMU to connect to (if any)
*/
static void *
test_migrate_tls_x509_start_default_host(QTestState *from,
QTestState *to)
{
TestMigrateTLSX509 args = {
.verifyclient = true,
.clientcert = true,
.certipaddr = "127.0.0.1"
};
return test_migrate_tls_x509_start_common(from, to, &args);
}
/*
* The unusual case: the server's cert is different from
* the address we're telling QEMU to connect to (if any),
* so we must give QEMU an explicit hostname to validate
*/
static void *
test_migrate_tls_x509_start_override_host(QTestState *from,
QTestState *to)
{
TestMigrateTLSX509 args = {
.verifyclient = true,
.clientcert = true,
.certhostname = "qemu.org",
};
return test_migrate_tls_x509_start_common(from, to, &args);
}
/*
* The unusual case: the server's cert is different from
* the address we're telling QEMU to connect to, and so we
* expect the client to reject the server
*/
static void *
test_migrate_tls_x509_start_mismatch_host(QTestState *from,
QTestState *to)
{
TestMigrateTLSX509 args = {
.verifyclient = true,
.clientcert = true,
.certipaddr = "10.0.0.1",
};
return test_migrate_tls_x509_start_common(from, to, &args);
}
static void *
test_migrate_tls_x509_start_friendly_client(QTestState *from,
QTestState *to)
{
TestMigrateTLSX509 args = {
.verifyclient = true,
.clientcert = true,
.authzclient = true,
.certipaddr = "127.0.0.1",
};
return test_migrate_tls_x509_start_common(from, to, &args);
}
static void *
test_migrate_tls_x509_start_hostile_client(QTestState *from,
QTestState *to)
{
TestMigrateTLSX509 args = {
.verifyclient = true,
.clientcert = true,
.hostileclient = true,
.authzclient = true,
.certipaddr = "127.0.0.1",
};
return test_migrate_tls_x509_start_common(from, to, &args);
}
/*
* The case with no client certificate presented,
* and no server verification
*/
static void *
test_migrate_tls_x509_start_allow_anon_client(QTestState *from,
QTestState *to)
{
TestMigrateTLSX509 args = {
.certipaddr = "127.0.0.1",
};
return test_migrate_tls_x509_start_common(from, to, &args);
}
/*
* The case with no client certificate presented,
* and server verification rejecting
*/
static void *
test_migrate_tls_x509_start_reject_anon_client(QTestState *from,
QTestState *to)
{
TestMigrateTLSX509 args = {
.verifyclient = true,
.certipaddr = "127.0.0.1",
};
return test_migrate_tls_x509_start_common(from, to, &args);
}
static void
test_migrate_tls_x509_finish(QTestState *from,
QTestState *to,
void *opaque)
{
TestMigrateTLSX509Data *data = opaque;
test_tls_cleanup(data->keyfile);
unlink(data->cacert);
unlink(data->servercert);
unlink(data->serverkey);
unlink(data->clientcert);
unlink(data->clientkey);
rmdir(data->workdir);
g_free(data->workdir);
g_free(data->keyfile);
g_free(data);
}
#endif /* CONFIG_TASN1 */
#endif /* CONFIG_GNUTLS */
static int migrate_postcopy_prepare(QTestState **from_ptr,
QTestState **to_ptr,
MigrateStart *args)
{
g_autofree 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, "{}");
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 = {};
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 = {
.hide_stderr = true,
};
QTestState *from, *to;
g_autofree char *uri = NULL;
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}");
/* 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 = {
.hide_stderr = true
};
QTestState *from, *to;
if (test_migrate_start(&from, &to, "tcp:127.0.0.1:0", &args)) {
return;
}
migrate_qmp(from, "tcp:127.0.0.1:0", "{}");
wait_for_migration_fail(from, false);
test_migrate_end(from, to, false);
}
/*
* A hook that runs after the src and dst QEMUs have been
* created, but before the migration is started. This can
* be used to set migration parameters and capabilities.
*
* Returns: NULL, or a pointer to opaque state to be
* later passed to the TestMigrateFinishHook
*/
typedef void * (*TestMigrateStartHook)(QTestState *from,
QTestState *to);
/*
* A hook that runs after the migration has finished,
* regardless of whether it succeeded or failed, but
* before QEMU has terminated (unless it self-terminated
* due to migration error)
*
* @opaque is a pointer to state previously returned
* by the TestMigrateStartHook if any, or NULL.
*/
typedef void (*TestMigrateFinishHook)(QTestState *from,
QTestState *to,
void *opaque);
typedef struct {
/* Optional: fine tune start parameters */
MigrateStart start;
/* Required: the URI for the dst QEMU to listen on */
const char *listen_uri;
/*
* Optional: the URI for the src QEMU to connect to
* If NULL, then it will query the dst QEMU for its actual
* listening address and use that as the connect address.
* This allows for dynamically picking a free TCP port.
*/
const char *connect_uri;
/* Optional: callback to run at start to set migration parameters */
TestMigrateStartHook start_hook;
/* Optional: callback to run at finish to cleanup */
TestMigrateFinishHook finish_hook;
/*
* Optional: normally we expect the migration process to complete.
*
* There can be a variety of reasons and stages in which failure
* can happen during tests.
*
* If a failure is expected to happen at time of establishing
* the connection, then MIG_TEST_FAIL will indicate that the dst
* QEMU is expected to stay running and accept future migration
* connections.
*
* If a failure is expected to happen while processing the
* migration stream, then MIG_TEST_FAIL_DEST_QUIT_ERR will indicate
* that the dst QEMU is expected to quit with non-zero exit status
*/
enum {
/* This test should succeed, the default */
MIG_TEST_SUCCEED = 0,
/* This test should fail, dest qemu should keep alive */
MIG_TEST_FAIL,
/* This test should fail, dest qemu should fail with abnormal status */
MIG_TEST_FAIL_DEST_QUIT_ERR,
} result;
/* Optional: set number of migration passes to wait for */
unsigned int iterations;
} MigrateCommon;
static void test_precopy_common(MigrateCommon *args)
{
QTestState *from, *to;
void *data_hook = NULL;
if (test_migrate_start(&from, &to, args->listen_uri, &args->start)) {
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);
if (args->start_hook) {
data_hook = args->start_hook(from, to);
}
/* Wait for the first serial output from the source */
wait_for_serial("src_serial");
if (!args->connect_uri) {
g_autofree char *local_connect_uri =
migrate_get_socket_address(to, "socket-address");
migrate_qmp(from, local_connect_uri, "{}");
} else {
migrate_qmp(from, args->connect_uri, "{}");
}
if (args->result != MIG_TEST_SUCCEED) {
bool allow_active = args->result == MIG_TEST_FAIL;
wait_for_migration_fail(from, allow_active);
if (args->result == MIG_TEST_FAIL_DEST_QUIT_ERR) {
qtest_set_expected_status(to, 1);
}
} else {
if (args->iterations) {
while (args->iterations--) {
wait_for_migration_pass(from);
}
} else {
wait_for_migration_pass(from);
}
migrate_set_parameter_int(from, "downtime-limit", CONVERGE_DOWNTIME);
if (!got_stop) {
qtest_qmp_eventwait(from, "STOP");
}
qtest_qmp_eventwait(to, "RESUME");
wait_for_serial("dest_serial");
wait_for_migration_complete(from);
}
if (args->finish_hook) {
args->finish_hook(from, to, data_hook);
}
test_migrate_end(from, to, args->result == MIG_TEST_SUCCEED);
}
static void test_precopy_unix_plain(void)
{
g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
MigrateCommon args = {
.listen_uri = uri,
.connect_uri = uri,
};
test_precopy_common(&args);
}
static void test_precopy_unix_dirty_ring(void)
{
g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
MigrateCommon args = {
.start = {
.use_dirty_ring = true,
},
.listen_uri = uri,
.connect_uri = uri,
};
test_precopy_common(&args);
}
#ifdef CONFIG_GNUTLS
static void test_precopy_unix_tls_psk(void)
{
g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
MigrateCommon args = {
.connect_uri = uri,
.listen_uri = uri,
.start_hook = test_migrate_tls_psk_start_match,
.finish_hook = test_migrate_tls_psk_finish,
};
test_precopy_common(&args);
}
#ifdef CONFIG_TASN1
static void test_precopy_unix_tls_x509_default_host(void)
{
g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
MigrateCommon args = {
.start = {
.hide_stderr = true,
},
.connect_uri = uri,
.listen_uri = uri,
.start_hook = test_migrate_tls_x509_start_default_host,
.finish_hook = test_migrate_tls_x509_finish,
.result = MIG_TEST_FAIL_DEST_QUIT_ERR,
};
test_precopy_common(&args);
}
static void test_precopy_unix_tls_x509_override_host(void)
{
g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
MigrateCommon args = {
.connect_uri = uri,
.listen_uri = uri,
.start_hook = test_migrate_tls_x509_start_override_host,
.finish_hook = test_migrate_tls_x509_finish,
};
test_precopy_common(&args);
}
#endif /* CONFIG_TASN1 */
#endif /* CONFIG_GNUTLS */
#if 0
/* Currently upset on aarch64 TCG */
static void test_ignore_shared(void)
{
g_autofree 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);
}
#endif
static void *
test_migrate_xbzrle_start(QTestState *from,
QTestState *to)
{
migrate_set_parameter_int(from, "xbzrle-cache-size", 33554432);
migrate_set_capability(from, "xbzrle", true);
migrate_set_capability(to, "xbzrle", true);
return NULL;
}
static void test_precopy_unix_xbzrle(void)
{
g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
MigrateCommon args = {
.connect_uri = uri,
.listen_uri = uri,
.start_hook = test_migrate_xbzrle_start,
.iterations = 2,
};
test_precopy_common(&args);
}
static void test_precopy_tcp_plain(void)
{
MigrateCommon args = {
.listen_uri = "tcp:127.0.0.1:0",
};
test_precopy_common(&args);
}
#ifdef CONFIG_GNUTLS
static void test_precopy_tcp_tls_psk_match(void)
{
MigrateCommon args = {
.listen_uri = "tcp:127.0.0.1:0",
.start_hook = test_migrate_tls_psk_start_match,
.finish_hook = test_migrate_tls_psk_finish,
};
test_precopy_common(&args);
}
static void test_precopy_tcp_tls_psk_mismatch(void)
{
MigrateCommon args = {
.start = {
.hide_stderr = true,
},
.listen_uri = "tcp:127.0.0.1:0",
.start_hook = test_migrate_tls_psk_start_mismatch,
.finish_hook = test_migrate_tls_psk_finish,
.result = MIG_TEST_FAIL,
};
test_precopy_common(&args);
}
#ifdef CONFIG_TASN1
static void test_precopy_tcp_tls_x509_default_host(void)
{
MigrateCommon args = {
.listen_uri = "tcp:127.0.0.1:0",
.start_hook = test_migrate_tls_x509_start_default_host,
.finish_hook = test_migrate_tls_x509_finish,
};
test_precopy_common(&args);
}
static void test_precopy_tcp_tls_x509_override_host(void)
{
MigrateCommon args = {
.listen_uri = "tcp:127.0.0.1:0",
.start_hook = test_migrate_tls_x509_start_override_host,
.finish_hook = test_migrate_tls_x509_finish,
};
test_precopy_common(&args);
}
static void test_precopy_tcp_tls_x509_mismatch_host(void)
{
MigrateCommon args = {
.start = {
.hide_stderr = true,
},
.listen_uri = "tcp:127.0.0.1:0",
.start_hook = test_migrate_tls_x509_start_mismatch_host,
.finish_hook = test_migrate_tls_x509_finish,
.result = MIG_TEST_FAIL_DEST_QUIT_ERR,
};
test_precopy_common(&args);
}
static void test_precopy_tcp_tls_x509_friendly_client(void)
{
MigrateCommon args = {
.listen_uri = "tcp:127.0.0.1:0",
.start_hook = test_migrate_tls_x509_start_friendly_client,
.finish_hook = test_migrate_tls_x509_finish,
};
test_precopy_common(&args);
}
static void test_precopy_tcp_tls_x509_hostile_client(void)
{
MigrateCommon args = {
.start = {
.hide_stderr = true,
},
.listen_uri = "tcp:127.0.0.1:0",
.start_hook = test_migrate_tls_x509_start_hostile_client,
.finish_hook = test_migrate_tls_x509_finish,
.result = MIG_TEST_FAIL,
};
test_precopy_common(&args);
}
static void test_precopy_tcp_tls_x509_allow_anon_client(void)
{
MigrateCommon args = {
.listen_uri = "tcp:127.0.0.1:0",
.start_hook = test_migrate_tls_x509_start_allow_anon_client,
.finish_hook = test_migrate_tls_x509_finish,
};
test_precopy_common(&args);
}
static void test_precopy_tcp_tls_x509_reject_anon_client(void)
{
MigrateCommon args = {
.start = {
.hide_stderr = true,
},
.listen_uri = "tcp:127.0.0.1:0",
.start_hook = test_migrate_tls_x509_start_reject_anon_client,
.finish_hook = test_migrate_tls_x509_finish,
.result = MIG_TEST_FAIL,
};
test_precopy_common(&args);
}
#endif /* CONFIG_TASN1 */
#endif /* CONFIG_GNUTLS */
static void *test_migrate_fd_start_hook(QTestState *from,
QTestState *to)
{
QDict *rsp;
int ret;
int pair[2];
/* 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]);
return NULL;
}
static void test_migrate_fd_finish_hook(QTestState *from,
QTestState *to,
void *opaque)
{
QDict *rsp;
const char *error_desc;
/* 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);
}
static void test_migrate_fd_proto(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.connect_uri = "fd:fd-mig",
.start_hook = test_migrate_fd_start_hook,
.finish_hook = test_migrate_fd_finish_hook
};
test_precopy_common(&args);
}
static void do_test_validate_uuid(MigrateStart *args, bool should_fail)
{
g_autofree 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);
}
static void test_validate_uuid(void)
{
MigrateStart args = {
.opts_source = "-uuid 11111111-1111-1111-1111-111111111111",
.opts_target = "-uuid 11111111-1111-1111-1111-111111111111",
};
do_test_validate_uuid(&args, false);
}
static void test_validate_uuid_error(void)
{
MigrateStart args = {
.opts_source = "-uuid 11111111-1111-1111-1111-111111111111",
.opts_target = "-uuid 22222222-2222-2222-2222-222222222222",
.hide_stderr = true,
};
do_test_validate_uuid(&args, true);
}
static void test_validate_uuid_src_not_set(void)
{
MigrateStart args = {
.opts_target = "-uuid 22222222-2222-2222-2222-222222222222",
.hide_stderr = true,
};
do_test_validate_uuid(&args, false);
}
static void test_validate_uuid_dst_not_set(void)
{
MigrateStart args = {
.opts_source = "-uuid 11111111-1111-1111-1111-111111111111",
.hide_stderr = true,
};
do_test_validate_uuid(&args, false);
}
static void test_migrate_auto_converge(void)
{
g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
MigrateStart args = {};
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 + expected_threshold / 100));
migrate_continue(from, "pre-switchover");
qtest_qmp_eventwait(to, "RESUME");
wait_for_serial("dest_serial");
wait_for_migration_complete(from);
test_migrate_end(from, to, true);
}
static void *
test_migrate_precopy_tcp_multifd_start_common(QTestState *from,
QTestState *to,
const char *method)
{
QDict *rsp;
migrate_set_parameter_int(from, "multifd-channels", 16);
migrate_set_parameter_int(to, "multifd-channels", 16);
migrate_set_parameter_str(from, "multifd-compression", method);
migrate_set_parameter_str(to, "multifd-compression", method);
migrate_set_capability(from, "multifd", true);
migrate_set_capability(to, "multifd", true);
/* Start incoming migration from the 1st socket */
rsp = wait_command(to, "{ 'execute': 'migrate-incoming',"
" 'arguments': { 'uri': 'tcp:127.0.0.1:0' }}");
qobject_unref(rsp);
return NULL;
}
static void *
test_migrate_precopy_tcp_multifd_start(QTestState *from,
QTestState *to)
{
return test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
}
static void *
test_migrate_precopy_tcp_multifd_zlib_start(QTestState *from,
QTestState *to)
{
return test_migrate_precopy_tcp_multifd_start_common(from, to, "zlib");
}
#ifdef CONFIG_ZSTD
static void *
test_migrate_precopy_tcp_multifd_zstd_start(QTestState *from,
QTestState *to)
{
return test_migrate_precopy_tcp_multifd_start_common(from, to, "zstd");
}
#endif /* CONFIG_ZSTD */
static void test_multifd_tcp_none(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.start_hook = test_migrate_precopy_tcp_multifd_start,
};
test_precopy_common(&args);
}
static void test_multifd_tcp_zlib(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.start_hook = test_migrate_precopy_tcp_multifd_zlib_start,
};
test_precopy_common(&args);
}
#ifdef CONFIG_ZSTD
static void test_multifd_tcp_zstd(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.start_hook = test_migrate_precopy_tcp_multifd_zstd_start,
};
test_precopy_common(&args);
}
#endif
#ifdef CONFIG_GNUTLS
static void *
test_migrate_multifd_tcp_tls_psk_start_match(QTestState *from,
QTestState *to)
{
test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
return test_migrate_tls_psk_start_match(from, to);
}
static void *
test_migrate_multifd_tcp_tls_psk_start_mismatch(QTestState *from,
QTestState *to)
{
test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
return test_migrate_tls_psk_start_mismatch(from, to);
}
#ifdef CONFIG_TASN1
static void *
test_migrate_multifd_tls_x509_start_default_host(QTestState *from,
QTestState *to)
{
test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
return test_migrate_tls_x509_start_default_host(from, to);
}
static void *
test_migrate_multifd_tls_x509_start_override_host(QTestState *from,
QTestState *to)
{
test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
return test_migrate_tls_x509_start_override_host(from, to);
}
static void *
test_migrate_multifd_tls_x509_start_mismatch_host(QTestState *from,
QTestState *to)
{
test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
return test_migrate_tls_x509_start_mismatch_host(from, to);
}
static void *
test_migrate_multifd_tls_x509_start_allow_anon_client(QTestState *from,
QTestState *to)
{
test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
return test_migrate_tls_x509_start_allow_anon_client(from, to);
}
static void *
test_migrate_multifd_tls_x509_start_reject_anon_client(QTestState *from,
QTestState *to)
{
test_migrate_precopy_tcp_multifd_start_common(from, to, "none");
return test_migrate_tls_x509_start_reject_anon_client(from, to);
}
#endif /* CONFIG_TASN1 */
static void test_multifd_tcp_tls_psk_match(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.start_hook = test_migrate_multifd_tcp_tls_psk_start_match,
.finish_hook = test_migrate_tls_psk_finish,
};
test_precopy_common(&args);
}
static void test_multifd_tcp_tls_psk_mismatch(void)
{
MigrateCommon args = {
.start = {
.hide_stderr = true,
},
.listen_uri = "defer",
.start_hook = test_migrate_multifd_tcp_tls_psk_start_mismatch,
.finish_hook = test_migrate_tls_psk_finish,
.result = MIG_TEST_FAIL,
};
test_precopy_common(&args);
}
#ifdef CONFIG_TASN1
static void test_multifd_tcp_tls_x509_default_host(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.start_hook = test_migrate_multifd_tls_x509_start_default_host,
.finish_hook = test_migrate_tls_x509_finish,
};
test_precopy_common(&args);
}
static void test_multifd_tcp_tls_x509_override_host(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.start_hook = test_migrate_multifd_tls_x509_start_override_host,
.finish_hook = test_migrate_tls_x509_finish,
};
test_precopy_common(&args);
}
static void test_multifd_tcp_tls_x509_mismatch_host(void)
{
/*
* This has different behaviour to the non-multifd case.
*
* In non-multifd case when client aborts due to mismatched
* cert host, the server has already started trying to load
* migration state, and so it exits with I/O failure.
*
* In multifd case when client aborts due to mismatched
* cert host, the server is still waiting for the other
* multifd connections to arrive so hasn't started trying
* to load migration state, and thus just aborts the migration
* without exiting.
*/
MigrateCommon args = {
.start = {
.hide_stderr = true,
},
.listen_uri = "defer",
.start_hook = test_migrate_multifd_tls_x509_start_mismatch_host,
.finish_hook = test_migrate_tls_x509_finish,
.result = MIG_TEST_FAIL,
};
test_precopy_common(&args);
}
static void test_multifd_tcp_tls_x509_allow_anon_client(void)
{
MigrateCommon args = {
.listen_uri = "defer",
.start_hook = test_migrate_multifd_tls_x509_start_allow_anon_client,
.finish_hook = test_migrate_tls_x509_finish,
};
test_precopy_common(&args);
}
static void test_multifd_tcp_tls_x509_reject_anon_client(void)
{
MigrateCommon args = {
.start = {
.hide_stderr = true,
},
.listen_uri = "defer",
.start_hook = test_migrate_multifd_tls_x509_start_reject_anon_client,
.finish_hook = test_migrate_tls_x509_finish,
.result = MIG_TEST_FAIL,
};
test_precopy_common(&args);
}
#endif /* CONFIG_TASN1 */
#endif /* CONFIG_GNUTLS */
/*
* This test does:
* source target
* migrate_incoming
* migrate
* migrate_cancel
* launch another target
* migrate
*
* And see that it works
*/
static void test_multifd_tcp_cancel(void)
{
MigrateStart args = {
.hide_stderr = true,
};
QTestState *from, *to, *to2;
QDict *rsp;
g_autofree char *uri = NULL;
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);
/* 300MB/s */
migrate_set_parameter_int(from, "max-bandwidth", 30000000);
migrate_set_parameter_int(from, "multifd-channels", 16);
migrate_set_parameter_int(to, "multifd-channels", 16);
migrate_set_capability(from, "multifd", true);
migrate_set_capability(to, "multifd", true);
/* Start incoming migration from the 1st socket */
rsp = wait_command(to, "{ 'execute': 'migrate-incoming',"
" 'arguments': { 'uri': 'tcp:127.0.0.1:0' }}");
qobject_unref(rsp);
/* 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);
migrate_cancel(from);
args = (MigrateStart){
.only_target = true,
};
if (test_migrate_start(&from, &to2, "defer", &args)) {
return;
}
migrate_set_parameter_int(to2, "multifd-channels", 16);
migrate_set_capability(to2, "multifd", true);
/* Start incoming migration from the 1st socket */
rsp = wait_command(to2, "{ 'execute': 'migrate-incoming',"
" 'arguments': { 'uri': 'tcp:127.0.0.1:0' }}");
qobject_unref(rsp);
g_free(uri);
uri = migrate_get_socket_address(to2, "socket-address");
wait_for_migration_status(from, "cancelled", NULL);
/* 300ms it should converge */
migrate_set_parameter_int(from, "downtime-limit", 300);
/* 1GB/s */
migrate_set_parameter_int(from, "max-bandwidth", 1000000000);
migrate_qmp(from, uri, "{}");
wait_for_migration_pass(from);
if (!got_stop) {
qtest_qmp_eventwait(from, "STOP");
}
qtest_qmp_eventwait(to2, "RESUME");
wait_for_serial("dest_serial");
wait_for_migration_complete(from);
test_migrate_end(from, to2, true);
}
static bool kvm_dirty_ring_supported(void)
{
#if defined(__linux__) && defined(HOST_X86_64)
int ret, kvm_fd = open("/dev/kvm", O_RDONLY);
if (kvm_fd < 0) {
return false;
}
ret = ioctl(kvm_fd, KVM_CHECK_EXTENSION, KVM_CAP_DIRTY_LOG_RING);
close(kvm_fd);
/* We test with 4096 slots */
if (ret < 4096) {
return false;
}
return true;
#else
return false;
#endif
}
int main(int argc, char **argv)
{
char template[] = "/tmp/migration-test-XXXXXX";
const bool has_kvm = qtest_has_accel("kvm");
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") &&
(!has_kvm || 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") && !has_kvm) {
g_test_message("Skipping test: s390x host with KVM is required");
return g_test_run();
}
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/bad_dest", test_baddest);
qtest_add_func("/migration/precopy/unix/plain", test_precopy_unix_plain);
qtest_add_func("/migration/precopy/unix/xbzrle", test_precopy_unix_xbzrle);
#ifdef CONFIG_GNUTLS
qtest_add_func("/migration/precopy/unix/tls/psk",
test_precopy_unix_tls_psk);
#ifdef CONFIG_TASN1
qtest_add_func("/migration/precopy/unix/tls/x509/default-host",
test_precopy_unix_tls_x509_default_host);
qtest_add_func("/migration/precopy/unix/tls/x509/override-host",
test_precopy_unix_tls_x509_override_host);
#endif /* CONFIG_TASN1 */
#endif /* CONFIG_GNUTLS */
qtest_add_func("/migration/precopy/tcp/plain", test_precopy_tcp_plain);
#ifdef CONFIG_GNUTLS
qtest_add_func("/migration/precopy/tcp/tls/psk/match",
test_precopy_tcp_tls_psk_match);
qtest_add_func("/migration/precopy/tcp/tls/psk/mismatch",
test_precopy_tcp_tls_psk_mismatch);
#ifdef CONFIG_TASN1
qtest_add_func("/migration/precopy/tcp/tls/x509/default-host",
test_precopy_tcp_tls_x509_default_host);
qtest_add_func("/migration/precopy/tcp/tls/x509/override-host",
test_precopy_tcp_tls_x509_override_host);
qtest_add_func("/migration/precopy/tcp/tls/x509/mismatch-host",
test_precopy_tcp_tls_x509_mismatch_host);
qtest_add_func("/migration/precopy/tcp/tls/x509/friendly-client",
test_precopy_tcp_tls_x509_friendly_client);
qtest_add_func("/migration/precopy/tcp/tls/x509/hostile-client",
test_precopy_tcp_tls_x509_hostile_client);
qtest_add_func("/migration/precopy/tcp/tls/x509/allow-anon-client",
test_precopy_tcp_tls_x509_allow_anon_client);
qtest_add_func("/migration/precopy/tcp/tls/x509/reject-anon-client",
test_precopy_tcp_tls_x509_reject_anon_client);
#endif /* CONFIG_TASN1 */
#endif /* CONFIG_GNUTLS */
/* qtest_add_func("/migration/ignore_shared", test_ignore_shared); */
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);
qtest_add_func("/migration/multifd/tcp/plain/none",
test_multifd_tcp_none);
qtest_add_func("/migration/multifd/tcp/plain/cancel",
test_multifd_tcp_cancel);
qtest_add_func("/migration/multifd/tcp/plain/zlib",
test_multifd_tcp_zlib);
#ifdef CONFIG_ZSTD
qtest_add_func("/migration/multifd/tcp/plain/zstd",
test_multifd_tcp_zstd);
#endif
#ifdef CONFIG_GNUTLS
qtest_add_func("/migration/multifd/tcp/tls/psk/match",
test_multifd_tcp_tls_psk_match);
qtest_add_func("/migration/multifd/tcp/tls/psk/mismatch",
test_multifd_tcp_tls_psk_mismatch);
#ifdef CONFIG_TASN1
qtest_add_func("/migration/multifd/tcp/tls/x509/default-host",
test_multifd_tcp_tls_x509_default_host);
qtest_add_func("/migration/multifd/tcp/tls/x509/override-host",
test_multifd_tcp_tls_x509_override_host);
qtest_add_func("/migration/multifd/tcp/tls/x509/mismatch-host",
test_multifd_tcp_tls_x509_mismatch_host);
qtest_add_func("/migration/multifd/tcp/tls/x509/allow-anon-client",
test_multifd_tcp_tls_x509_allow_anon_client);
qtest_add_func("/migration/multifd/tcp/tls/x509/reject-anon-client",
test_multifd_tcp_tls_x509_reject_anon_client);
#endif /* CONFIG_TASN1 */
#endif /* CONFIG_GNUTLS */
if (kvm_dirty_ring_supported()) {
qtest_add_func("/migration/dirty_ring",
test_precopy_unix_dirty_ring);
}
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;
}
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