848 lines
24 KiB
C
848 lines
24 KiB
C
/*
|
|
* 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/option.h"
|
|
#include "qemu/range.h"
|
|
#include "qemu/sockets.h"
|
|
#include "chardev/char.h"
|
|
#include "sysemu/sysemu.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"
|
|
|
|
static void init_bootfile(const char *bootpath, void *content)
|
|
{
|
|
FILE *bootfile = fopen(bootpath, "wb");
|
|
|
|
g_assert_cmpint(fwrite(content, 512, 1, bootfile), ==, 1);
|
|
fclose(bootfile);
|
|
}
|
|
|
|
#include "tests/migration/s390x/a-b-bios.h"
|
|
|
|
static void init_bootfile_s390x(const char *bootpath)
|
|
{
|
|
FILE *bootfile = fopen(bootpath, "wb");
|
|
size_t len = sizeof(s390x_elf);
|
|
|
|
g_assert_cmpint(fwrite(s390x_elf, 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(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 uint64_t get_migration_pass(QTestState *who)
|
|
{
|
|
QDict *rsp_return, *rsp_ram;
|
|
uint64_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, "dirty-sync-count", 0);
|
|
}
|
|
qobject_unref(rsp_return);
|
|
return result;
|
|
}
|
|
|
|
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_status(QTestState *who,
|
|
const char *goal)
|
|
{
|
|
while (true) {
|
|
bool completed;
|
|
char *status;
|
|
|
|
status = migrate_query_status(who);
|
|
completed = strcmp(status, goal) == 0;
|
|
g_assert_cmpstr(status, !=, "failed");
|
|
g_free(status);
|
|
if (completed) {
|
|
return;
|
|
}
|
|
usleep(1000);
|
|
}
|
|
}
|
|
|
|
static void wait_for_migration_complete(QTestState *who)
|
|
{
|
|
wait_for_migration_status(who, "completed");
|
|
}
|
|
|
|
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;
|
|
bool bad = false;
|
|
|
|
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 {
|
|
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);
|
|
bad = true;
|
|
}
|
|
}
|
|
}
|
|
g_assert_false(bad);
|
|
}
|
|
|
|
static void cleanup(const char *filename)
|
|
{
|
|
char *path = g_strdup_printf("%s/%s", tmpfs, filename);
|
|
|
|
unlink(path);
|
|
g_free(path);
|
|
}
|
|
|
|
static void migrate_check_parameter(QTestState *who, const char *parameter,
|
|
long long value)
|
|
{
|
|
QDict *rsp_return;
|
|
|
|
rsp_return = wait_command(who,
|
|
"{ 'execute': 'query-migrate-parameters' }");
|
|
g_assert_cmpint(qdict_get_int(rsp_return, parameter), ==, value);
|
|
qobject_unref(rsp_return);
|
|
}
|
|
|
|
static void migrate_set_parameter(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(who, parameter, value);
|
|
}
|
|
|
|
static void migrate_pause(QTestState *who)
|
|
{
|
|
QDict *rsp;
|
|
|
|
rsp = wait_command(who, "{ 'execute': 'migrate-pause' }");
|
|
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 = qmp("{ '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)
|
|
{
|
|
gchar *cmd_src, *cmd_dst;
|
|
char *bootpath = g_strdup_printf("%s/bootsect", tmpfs);
|
|
const char *arch = qtest_get_arch();
|
|
const char *accel = "kvm:tcg";
|
|
|
|
got_stop = false;
|
|
|
|
if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
|
|
init_bootfile(bootpath, x86_bootsect);
|
|
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",
|
|
accel, tmpfs, bootpath);
|
|
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",
|
|
accel, tmpfs, bootpath, uri);
|
|
start_address = X86_TEST_MEM_START;
|
|
end_address = X86_TEST_MEM_END;
|
|
} else if (g_str_equal(arch, "s390x")) {
|
|
init_bootfile_s390x(bootpath);
|
|
cmd_src = g_strdup_printf("-machine accel=%s -m 128M"
|
|
" -name source,debug-threads=on"
|
|
" -serial file:%s/src_serial -bios %s",
|
|
accel, tmpfs, bootpath);
|
|
cmd_dst = g_strdup_printf("-machine accel=%s -m 128M"
|
|
" -name target,debug-threads=on"
|
|
" -serial file:%s/dest_serial -bios %s"
|
|
" -incoming %s",
|
|
accel, tmpfs, bootpath, uri);
|
|
start_address = S390_TEST_MEM_START;
|
|
end_address = S390_TEST_MEM_END;
|
|
} else if (strcmp(arch, "ppc64") == 0) {
|
|
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'", accel, tmpfs, end_address,
|
|
start_address);
|
|
cmd_dst = g_strdup_printf("-machine accel=%s -m 256M"
|
|
" -name target,debug-threads=on"
|
|
" -serial file:%s/dest_serial"
|
|
" -incoming %s",
|
|
accel, tmpfs, uri);
|
|
|
|
start_address = PPC_TEST_MEM_START;
|
|
end_address = PPC_TEST_MEM_END;
|
|
} else if (strcmp(arch, "aarch64") == 0) {
|
|
init_bootfile(bootpath, aarch64_kernel);
|
|
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 ",
|
|
accel, tmpfs, bootpath);
|
|
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 ",
|
|
accel, tmpfs, bootpath, uri);
|
|
|
|
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 (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_start(cmd_src);
|
|
g_free(cmd_src);
|
|
|
|
*to = qtest_init(cmd_dst);
|
|
g_free(cmd_dst);
|
|
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(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(who, "max-bandwidth", value);
|
|
}
|
|
|
|
static void test_deprecated(void)
|
|
{
|
|
QTestState *from;
|
|
|
|
from = qtest_start("-machine none");
|
|
|
|
deprecated_set_downtime(from, 0.12345);
|
|
deprecated_set_speed(from, 12345);
|
|
|
|
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)) {
|
|
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(from, "max-bandwidth", 100000000);
|
|
migrate_set_parameter(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(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");
|
|
|
|
/*
|
|
* 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");
|
|
|
|
/*
|
|
* 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");
|
|
migrate(from, uri, "{'resume': true}");
|
|
g_free(uri);
|
|
|
|
/* Restore the postcopy bandwidth to unlimited */
|
|
migrate_set_parameter(from, "max-postcopy-bandwidth", 0);
|
|
|
|
migrate_postcopy_complete(from, to);
|
|
}
|
|
|
|
static void test_baddest(void)
|
|
{
|
|
QTestState *from, *to;
|
|
QDict *rsp_return;
|
|
char *status;
|
|
bool failed;
|
|
|
|
if (test_migrate_start(&from, &to, "tcp:0:0", true)) {
|
|
return;
|
|
}
|
|
migrate(from, "tcp:0:0", "{}");
|
|
do {
|
|
status = migrate_query_status(from);
|
|
g_assert(!strcmp(status, "setup") || !(strcmp(status, "failed")));
|
|
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);
|
|
|
|
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)) {
|
|
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(from, "downtime-limit", 1);
|
|
/* 1GB/s */
|
|
migrate_set_parameter(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(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);
|
|
}
|
|
|
|
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\n", 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);
|
|
|
|
ret = g_test_run();
|
|
|
|
g_assert_cmpint(ret, ==, 0);
|
|
|
|
ret = rmdir(tmpfs);
|
|
if (ret != 0) {
|
|
g_test_message("unable to rmdir: path (%s): %s\n",
|
|
tmpfs, strerror(errno));
|
|
}
|
|
|
|
return ret;
|
|
}
|