QOSState *qtest_vboot(QOSOps *ops, const char *cmdline_fmt, va_list ap)
{
char *cmdline;
QOSState *qs = g_new0(QOSState, 1);
cmdline = g_strdup_vprintf(cmdline_fmt, ap);
qs->qts = qtest_init(cmdline);
qs->ops = ops;
if (ops) {
qs->alloc = ops->init_allocator(qs->qts, ALLOC_NO_FLAGS);
qs->pcibus = ops->qpci_init(qs->qts, qs->alloc);
}
g_free(cmdline);
return qs;
}
static void test_migrate(void)
{
char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
QTestState *global = global_qtest, *from, *to;
unsigned char dest_byte_a, dest_byte_b, dest_byte_c, dest_byte_d;
gchar *cmd, *cmd_src, *cmd_dst;
QDict *rsp;
char *bootpath = g_strdup_printf("%s/bootsect", tmpfs);
const char *arch = qtest_get_arch();
got_stop = false;
if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
init_bootfile_x86(bootpath);
cmd_src = g_strdup_printf("-machine accel=kvm:tcg -m 150M"
" -name pcsource,debug-threads=on"
" -serial file:%s/src_serial"
" -drive file=%s,format=raw",
tmpfs, bootpath);
cmd_dst = g_strdup_printf("-machine accel=kvm:tcg -m 150M"
" -name pcdest,debug-threads=on"
" -serial file:%s/dest_serial"
" -drive file=%s,format=raw"
" -incoming %s",
tmpfs, bootpath, uri);
} else if (strcmp(arch, "ppc64") == 0) {
init_bootfile_ppc(bootpath);
cmd_src = g_strdup_printf("-machine accel=kvm:tcg -m 256M"
" -name pcsource,debug-threads=on"
" -serial file:%s/src_serial"
" -drive file=%s,if=pflash,format=raw",
tmpfs, bootpath);
cmd_dst = g_strdup_printf("-machine accel=kvm:tcg -m 256M"
" -name pcdest,debug-threads=on"
" -serial file:%s/dest_serial"
" -incoming %s",
tmpfs, uri);
} else {
g_assert_not_reached();
}
g_free(bootpath);
from = qtest_start(cmd_src);
g_free(cmd_src);
to = qtest_init(cmd_dst);
g_free(cmd_dst);
global_qtest = from;
rsp = qmp("{ 'execute': 'migrate-set-capabilities',"
"'arguments': { "
"'capabilities': [ {"
"'capability': 'postcopy-ram',"
"'state': true } ] } }");
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
global_qtest = to;
rsp = qmp("{ 'execute': 'migrate-set-capabilities',"
"'arguments': { "
"'capabilities': [ {"
"'capability': 'postcopy-ram',"
"'state': true } ] } }");
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
/* 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.
*/
global_qtest = from;
rsp = qmp("{ 'execute': 'migrate_set_speed',"
"'arguments': { 'value': 100000000 } }");
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
/* 1ms downtime - it should never finish precopy */
rsp = qmp("{ 'execute': 'migrate_set_downtime',"
"'arguments': { 'value': 0.001 } }");
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
/* Wait for the first serial output from the source */
wait_for_serial("src_serial");
cmd = g_strdup_printf("{ 'execute': 'migrate',"
"'arguments': { 'uri': '%s' } }",
uri);
rsp = qmp(cmd);
g_free(cmd);
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
wait_for_migration_pass();
rsp = return_or_event(qmp("{ 'execute': 'migrate-start-postcopy' }"));
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
if (!got_stop) {
qmp_eventwait("STOP");
}
global_qtest = to;
qmp_eventwait("RESUME");
wait_for_serial("dest_serial");
global_qtest = from;
wait_for_migration_complete();
qtest_quit(from);
global_qtest = to;
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(10 * 1000);
} while (dest_byte_a == dest_byte_b);
qmp("{ 'execute' : 'stop'}");
/* With it stopped, check nothing changes */
qtest_memread(to, start_address, &dest_byte_c, 1);
sleep(1);
qtest_memread(to, start_address, &dest_byte_d, 1);
g_assert_cmpint(dest_byte_c, ==, dest_byte_d);
check_guests_ram();
qtest_quit(to);
g_free(uri);
global_qtest = global;
cleanup("bootsect");
cleanup("migsocket");
cleanup("src_serial");
cleanup("dest_serial");
}
static void test_migrate(void)
{
TestServer *s = test_server_new("src");
TestServer *dest = test_server_new("dest");
char *uri = g_strdup_printf("%s%s", "unix:", dest->mig_path);
QTestState *global = global_qtest, *from, *to;
GSource *source;
gchar *cmd;
QDict *rsp;
guint8 *log;
guint64 size;
test_server_listen(s);
test_server_listen(dest);
cmd = GET_QEMU_CMDE(s, 2, "", "");
from = qtest_start(cmd);
g_free(cmd);
init_virtio_dev(s, 1u << VIRTIO_NET_F_MAC);
wait_for_fds(s);
size = get_log_size(s);
g_assert_cmpint(size, ==, (2 * 1024 * 1024) / (VHOST_LOG_PAGE * 8));
cmd = GET_QEMU_CMDE(dest, 2, "", " -incoming %s", uri);
to = qtest_init(cmd);
g_free(cmd);
source = g_source_new(&test_migrate_source_funcs,
sizeof(TestMigrateSource));
((TestMigrateSource *)source)->src = s;
((TestMigrateSource *)source)->dest = dest;
g_source_attach(source, NULL);
/* slow down migration to have time to fiddle with log */
/* TODO: qtest could learn to break on some places */
rsp = qmp("{ 'execute': 'migrate_set_speed',"
"'arguments': { 'value': 10 } }");
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
cmd = g_strdup_printf("{ 'execute': 'migrate',"
"'arguments': { 'uri': '%s' } }",
uri);
rsp = qmp(cmd);
g_free(cmd);
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
wait_for_log_fd(s);
log = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, s->log_fd, 0);
g_assert(log != MAP_FAILED);
/* modify first page */
write_guest_mem(s, 0x42);
log[0] = 1;
munmap(log, size);
/* speed things up */
rsp = qmp("{ 'execute': 'migrate_set_speed',"
"'arguments': { 'value': 0 } }");
g_assert(qdict_haskey(rsp, "return"));
QDECREF(rsp);
qmp_eventwait("STOP");
global_qtest = to;
qmp_eventwait("RESUME");
read_guest_mem_server(dest);
uninit_virtio_dev(s);
g_source_destroy(source);
g_source_unref(source);
qtest_quit(to);
test_server_free(dest);
qtest_quit(from);
test_server_free(s);
g_free(uri);
global_qtest = global;
}
static void 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_x86(bootpath);
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);
} else if (strcmp(arch, "ppc64") == 0) {
/* On ppc64, the test only works with kvm-hv, but not with kvm-pr */
if (access("/sys/module/kvm_hv", F_OK)) {
accel = "tcg";
}
init_bootfile_ppc(bootpath);
cmd_src = g_strdup_printf("-machine accel=%s -m 256M"
" -name source,debug-threads=on"
" -serial file:%s/src_serial"
" -drive file=%s,if=pflash,format=raw",
accel, tmpfs, bootpath);
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);
} 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);
}