*/
#define DIRTYLIMIT_TOLERANCE_RANGE 25 /* MB/s */
+#define ANALYZE_SCRIPT "scripts/analyze-migration.py"
+
+#define QEMU_VM_FILE_MAGIC 0x5145564d
+#define FILE_TEST_FILENAME "migfile"
+#define FILE_TEST_OFFSET 0x1000
+#define QEMU_ENV_SRC "QTEST_QEMU_BINARY_SRC"
+#define QEMU_ENV_DST "QTEST_QEMU_BINARY_DST"
+
#if defined(__linux__)
#include <sys/syscall.h>
#include <sys/vfs.h>
#endif
static char *tmpfs;
+static char *bootpath;
/* 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/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)
+static void bootfile_create(char *dir)
{
+ const char *arch = qtest_get_arch();
+ unsigned char *content;
+ size_t len;
+
+ bootpath = g_strdup_printf("%s/bootsect", dir);
+ if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
+ /* the assembled x86 boot sector should be exactly one sector large */
+ g_assert(sizeof(x86_bootsect) == 512);
+ content = x86_bootsect;
+ len = sizeof(x86_bootsect);
+ } else if (g_str_equal(arch, "s390x")) {
+ content = s390x_elf;
+ len = sizeof(s390x_elf);
+ } else if (strcmp(arch, "ppc64") == 0) {
+ /*
+ * sane architectures can be programmed at the boot prompt
+ */
+ return;
+ } else if (strcmp(arch, "aarch64") == 0) {
+ content = aarch64_kernel;
+ len = sizeof(aarch64_kernel);
+ g_assert(sizeof(aarch64_kernel) <= ARM_TEST_MAX_KERNEL_SIZE);
+ } else {
+ g_assert_not_reached();
+ }
+
FILE *bootfile = fopen(bootpath, "wb");
g_assert_cmpint(fwrite(content, len, 1, bootfile), ==, 1);
fclose(bootfile);
}
+static void bootfile_delete(void)
+{
+ unlink(bootpath);
+ g_free(bootpath);
+ bootpath = NULL;
+}
+
/*
* Wait for some output in the serial output file,
* we get an 'A' followed by an endless string of 'B's
* transferred.
*
* Finally we go back to the source and read a byte just
- * before the marker untill we see it flip in value. This
+ * before the marker until we see it flip in value. This
* is proof that start_address -> MAGIC_OFFSET_BASE
* is now dirty again.
*
qtest_qmp_assert_success(who, "{ 'execute': 'migrate_cancel' }");
}
-static void migrate_set_capability(QTestState *who, const char *capability,
- bool value)
-{
- qtest_qmp_assert_success(who,
- "{ 'execute': 'migrate-set-capabilities',"
- "'arguments': { "
- "'capabilities': [ { "
- "'capability': %s, 'state': %i } ] } }",
- capability, value);
-}
-
static void migrate_postcopy_start(QTestState *from, QTestState *to)
{
qtest_qmp_assert_success(from, "{ 'execute': 'migrate-start-postcopy' }");
MIG_TEST_FAIL,
/* This test should fail, dest qemu should fail with abnormal status */
MIG_TEST_FAIL_DEST_QUIT_ERR,
+ /* The QMP command for this migration should fail with an error */
+ MIG_TEST_QMP_ERROR,
} result;
/*
/* Postcopy specific fields */
void *postcopy_data;
bool postcopy_preempt;
+ bool postcopy_recovery_test_fail;
} MigrateCommon;
static int test_migrate_start(QTestState **from, QTestState **to,
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 *kvm_opts = NULL;
const char *arch = qtest_get_arch();
const char *memory_size;
+ const char *machine_alias, *machine_opts = "";
+ g_autofree char *machine = NULL;
if (args->use_shmem) {
if (!g_file_test("/dev/shm", G_FILE_TEST_IS_DIR)) {
got_src_stop = false;
got_dst_resume = 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_opts = g_strdup_printf("-drive file=%s,format=raw", bootpath);
+
+ if (g_str_equal(arch, "i386")) {
+ machine_alias = "pc";
+ } else {
+ machine_alias = "q35";
+ }
+ arch_opts = g_strdup_printf(
+ "-drive if=none,id=d0,file=%s,format=raw "
+ "-device ide-hd,drive=d0,secs=1,cyls=1,heads=1", bootpath);
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";
+ machine_alias = "s390-ccw-virtio";
arch_opts = g_strdup_printf("-bios %s", bootpath);
start_address = S390_TEST_MEM_START;
end_address = S390_TEST_MEM_END;
"'nvramrc=hex .\" _\" begin %x %x "
"do i c@ 1 + i c! 1000 +loop .\" B\" 0 "
"until'", end_address, start_address);
- arch_opts = g_strdup("-nodefaults -machine vsmt=8");
+ machine_alias = "pseries";
+ machine_opts = "vsmt=8";
+ arch_opts = g_strdup("-nodefaults");
} else if (strcmp(arch, "aarch64") == 0) {
- init_bootfile(bootpath, aarch64_kernel, sizeof(aarch64_kernel));
memory_size = "150M";
- arch_opts = g_strdup_printf("-machine virt,gic-version=max -cpu max "
- "-kernel %s", bootpath);
+ machine_alias = "virt";
+ machine_opts = "gic-version=max";
+ arch_opts = g_strdup_printf("-cpu max -kernel %s", bootpath);
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();
}
"-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("");
}
+ if (args->use_dirty_ring) {
+ kvm_opts = ",dirty-ring-size=4096";
+ }
+
+ machine = resolve_machine_version(machine_alias, QEMU_ENV_SRC,
+ QEMU_ENV_DST);
+
+ g_test_message("Using machine type: %s", machine);
+
cmd_source = g_strdup_printf("-accel kvm%s -accel tcg "
+ "-machine %s,%s "
"-name source,debug-threads=on "
"-m %s "
"-serial file:%s/src_serial "
"%s %s %s %s %s",
- args->use_dirty_ring ?
- ",dirty-ring-size=4096" : "",
+ kvm_opts ? kvm_opts : "",
+ machine, machine_opts,
memory_size, tmpfs,
arch_opts ? arch_opts : "",
arch_source ? arch_source : "",
- shmem_opts,
+ shmem_opts ? shmem_opts : "",
args->opts_source ? args->opts_source : "",
ignore_stderr);
if (!args->only_target) {
- *from = qtest_init(cmd_source);
+ *from = qtest_init_with_env(QEMU_ENV_SRC, cmd_source);
qtest_qmp_set_event_callback(*from,
migrate_watch_for_stop,
&got_src_stop);
}
cmd_target = g_strdup_printf("-accel kvm%s -accel tcg "
+ "-machine %s,%s "
"-name target,debug-threads=on "
"-m %s "
"-serial file:%s/dest_serial "
"-incoming %s "
"%s %s %s %s %s",
- args->use_dirty_ring ?
- ",dirty-ring-size=4096" : "",
+ kvm_opts ? kvm_opts : "",
+ machine, machine_opts,
memory_size, tmpfs, uri,
arch_opts ? arch_opts : "",
arch_target ? arch_target : "",
- shmem_opts,
+ shmem_opts ? shmem_opts : "",
args->opts_target ? args->opts_target : "",
ignore_stderr);
- *to = qtest_init(cmd_target);
+ *to = qtest_init_with_env(QEMU_ENV_DST, cmd_target);
qtest_qmp_set_event_callback(*to,
migrate_watch_for_resume,
&got_dst_resume);
/*
* Remove shmem file immediately to avoid memory leak in test failed case.
- * It's valid becase QEMU has already opened this file
+ * It's valid because QEMU has already opened this file
*/
if (args->use_shmem) {
unlink(shmem_path);
qtest_quit(to);
- cleanup("bootsect");
cleanup("migsocket");
cleanup("src_serial");
cleanup("dest_serial");
+ cleanup(FILE_TEST_FILENAME);
}
#ifdef CONFIG_GNUTLS
migrate_prepare_for_dirty_mem(from);
qtest_qmp_assert_success(to, "{ 'execute': 'migrate-incoming',"
- " 'arguments': { 'uri': 'tcp:127.0.0.1:0' }}");
+ " 'arguments': { "
+ " 'channels': [ { 'channel-type': 'main',"
+ " 'addr': { 'transport': 'socket',"
+ " 'type': 'inet',"
+ " 'host': '127.0.0.1',"
+ " 'port': '0' } } ] } }");
/* Wait for the first serial output from the source */
wait_for_serial("src_serial");
}
#endif
+static void wait_for_postcopy_status(QTestState *one, const char *status)
+{
+ wait_for_migration_status(one, status,
+ (const char * []) { "failed", "active",
+ "completed", NULL });
+}
+
+#ifndef _WIN32
+static void postcopy_recover_fail(QTestState *from, QTestState *to)
+{
+ int ret, pair1[2], pair2[2];
+ char c;
+
+ /* Create two unrelated socketpairs */
+ ret = qemu_socketpair(PF_LOCAL, SOCK_STREAM, 0, pair1);
+ g_assert_cmpint(ret, ==, 0);
+
+ ret = qemu_socketpair(PF_LOCAL, SOCK_STREAM, 0, pair2);
+ g_assert_cmpint(ret, ==, 0);
+
+ /*
+ * Give the guests unpaired ends of the sockets, so they'll all blocked
+ * at reading. This mimics a wrong channel established.
+ */
+ qtest_qmp_fds_assert_success(from, &pair1[0], 1,
+ "{ 'execute': 'getfd',"
+ " 'arguments': { 'fdname': 'fd-mig' }}");
+ qtest_qmp_fds_assert_success(to, &pair2[0], 1,
+ "{ 'execute': 'getfd',"
+ " 'arguments': { 'fdname': 'fd-mig' }}");
+
+ /*
+ * Write the 1st byte as QEMU_VM_COMMAND (0x8) for the dest socket, to
+ * emulate the 1st byte of a real recovery, but stops from there to
+ * keep dest QEMU in RECOVER. This is needed so that we can kick off
+ * the recover process on dest QEMU (by triggering the G_IO_IN event).
+ *
+ * NOTE: this trick is not needed on src QEMUs, because src doesn't
+ * rely on an pre-existing G_IO_IN event, so it will always trigger the
+ * upcoming recovery anyway even if it can read nothing.
+ */
+#define QEMU_VM_COMMAND 0x08
+ c = QEMU_VM_COMMAND;
+ ret = send(pair2[1], &c, 1, 0);
+ g_assert_cmpint(ret, ==, 1);
+
+ migrate_recover(to, "fd:fd-mig");
+ migrate_qmp(from, "fd:fd-mig", "{'resume': true}");
+
+ /*
+ * Make sure both QEMU instances will go into RECOVER stage, then test
+ * kicking them out using migrate-pause.
+ */
+ wait_for_postcopy_status(from, "postcopy-recover");
+ wait_for_postcopy_status(to, "postcopy-recover");
+
+ /*
+ * This would be issued by the admin upon noticing the hang, we should
+ * make sure we're able to kick this out.
+ */
+ migrate_pause(from);
+ wait_for_postcopy_status(from, "postcopy-paused");
+
+ /* Do the same test on dest */
+ migrate_pause(to);
+ wait_for_postcopy_status(to, "postcopy-paused");
+
+ close(pair1[0]);
+ close(pair1[1]);
+ close(pair2[0]);
+ close(pair2[1]);
+}
+#endif /* _WIN32 */
+
static void test_postcopy_recovery_common(MigrateCommon *args)
{
QTestState *from, *to;
* 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 });
+ wait_for_postcopy_status(to, "postcopy-paused");
+ wait_for_postcopy_status(from, "postcopy-paused");
+
+#ifndef _WIN32
+ if (args->postcopy_recovery_test_fail) {
+ /*
+ * Test when a wrong socket specified for recover, and then the
+ * ability to kick it out, and continue with a correct socket.
+ */
+ postcopy_recover_fail(from, to);
+ /* continue with a good recovery */
+ }
+#endif /* _WIN32 */
/*
* Create a new socket to emulate a new channel that is different
* 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 */
test_postcopy_recovery_common(&args);
}
+#ifndef _WIN32
+static void test_postcopy_recovery_double_fail(void)
+{
+ MigrateCommon args = {
+ .postcopy_recovery_test_fail = true,
+ };
+
+ test_postcopy_recovery_common(&args);
+}
+#endif /* _WIN32 */
+
#ifdef CONFIG_GNUTLS
static void test_postcopy_recovery_tls_psk(void)
{
test_migrate_end(from, to, false);
}
+#ifndef _WIN32
+static void test_analyze_script(void)
+{
+ MigrateStart args = {
+ .opts_source = "-uuid 11111111-1111-1111-1111-111111111111",
+ };
+ QTestState *from, *to;
+ g_autofree char *uri = NULL;
+ g_autofree char *file = NULL;
+ int pid, wstatus;
+ const char *python = g_getenv("PYTHON");
+
+ if (!python) {
+ g_test_skip("PYTHON variable not set");
+ return;
+ }
+
+ /* dummy url */
+ if (test_migrate_start(&from, &to, "tcp:127.0.0.1:0", &args)) {
+ return;
+ }
+
+ /*
+ * Setting these two capabilities causes the "configuration"
+ * vmstate to include subsections for them. The script needs to
+ * parse those subsections properly.
+ */
+ migrate_set_capability(from, "validate-uuid", true);
+ migrate_set_capability(from, "x-ignore-shared", true);
+
+ file = g_strdup_printf("%s/migfile", tmpfs);
+ uri = g_strdup_printf("exec:cat > %s", file);
+
+ migrate_ensure_converge(from);
+ migrate_qmp(from, uri, "{}");
+ wait_for_migration_complete(from);
+
+ pid = fork();
+ if (!pid) {
+ close(1);
+ open("/dev/null", O_WRONLY);
+ execl(python, python, ANALYZE_SCRIPT, "-f", file, NULL);
+ g_assert_not_reached();
+ }
+
+ g_assert(waitpid(pid, &wstatus, 0) == pid);
+ if (WIFEXITED(wstatus) && WEXITSTATUS(wstatus) != 0) {
+ g_test_message("Failed to analyze the migration stream");
+ g_test_fail();
+ }
+ test_migrate_end(from, to, false);
+ cleanup("migfile");
+}
+#endif
+
static void test_precopy_common(MigrateCommon *args)
{
QTestState *from, *to;
void *data_hook = NULL;
+ g_autofree char *connect_uri = NULL;
if (test_migrate_start(&from, &to, args->listen_uri, &args->start)) {
return;
}
if (!args->connect_uri) {
- g_autofree char *local_connect_uri =
- migrate_get_socket_address(to, "socket-address");
- migrate_qmp(from, local_connect_uri, "{}");
+ connect_uri = migrate_get_socket_address(to, "socket-address");
} else {
- migrate_qmp(from, args->connect_uri, "{}");
+ connect_uri = g_strdup(args->connect_uri);
+ }
+
+ if (args->result == MIG_TEST_QMP_ERROR) {
+ migrate_qmp_fail(from, connect_uri, "{}");
+ goto finish;
}
+ migrate_qmp(from, connect_uri, "{}");
if (args->result != MIG_TEST_SUCCEED) {
bool allow_active = args->result == MIG_TEST_FAIL;
wait_for_serial("dest_serial");
}
+finish:
+ if (args->finish_hook) {
+ args->finish_hook(from, to, data_hook);
+ }
+
+ test_migrate_end(from, to, args->result == MIG_TEST_SUCCEED);
+}
+
+static void test_file_common(MigrateCommon *args, bool stop_src)
+{
+ QTestState *from, *to;
+ void *data_hook = NULL;
+ g_autofree char *connect_uri = g_strdup(args->connect_uri);
+
+ if (test_migrate_start(&from, &to, args->listen_uri, &args->start)) {
+ return;
+ }
+
+ /*
+ * File migration is never live. We can keep the source VM running
+ * during migration, but the destination will not be running
+ * concurrently.
+ */
+ g_assert_false(args->live);
+
+ if (args->start_hook) {
+ data_hook = args->start_hook(from, to);
+ }
+
+ migrate_ensure_converge(from);
+ wait_for_serial("src_serial");
+
+ if (stop_src) {
+ qtest_qmp_assert_success(from, "{ 'execute' : 'stop'}");
+ if (!got_src_stop) {
+ qtest_qmp_eventwait(from, "STOP");
+ }
+ }
+
+ if (args->result == MIG_TEST_QMP_ERROR) {
+ migrate_qmp_fail(from, connect_uri, "{}");
+ goto finish;
+ }
+
+ migrate_qmp(from, connect_uri, "{}");
+ wait_for_migration_complete(from);
+
+ /*
+ * We need to wait for the source to finish before starting the
+ * destination.
+ */
+ migrate_incoming_qmp(to, connect_uri, "{}");
+ wait_for_migration_complete(to);
+
+ if (stop_src) {
+ qtest_qmp_assert_success(to, "{ 'execute' : 'cont'}");
+ }
+
+ if (!got_dst_resume) {
+ qtest_qmp_eventwait(to, "RESUME");
+ }
+
+ wait_for_serial("dest_serial");
+
+finish:
if (args->finish_hook) {
args->finish_hook(from, to, data_hook);
}
test_precopy_common(&args);
}
+static void test_precopy_file(void)
+{
+ g_autofree char *uri = g_strdup_printf("file:%s/%s", tmpfs,
+ FILE_TEST_FILENAME);
+ MigrateCommon args = {
+ .connect_uri = uri,
+ .listen_uri = "defer",
+ };
+
+ test_file_common(&args, true);
+}
+
+static void file_offset_finish_hook(QTestState *from, QTestState *to,
+ void *opaque)
+{
+#if defined(__linux__)
+ g_autofree char *path = g_strdup_printf("%s/%s", tmpfs, FILE_TEST_FILENAME);
+ size_t size = FILE_TEST_OFFSET + sizeof(QEMU_VM_FILE_MAGIC);
+ uintptr_t *addr, *p;
+ int fd;
+
+ fd = open(path, O_RDONLY);
+ g_assert(fd != -1);
+ addr = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
+ g_assert(addr != MAP_FAILED);
+
+ /*
+ * Ensure the skipped offset contains zeros and the migration
+ * stream starts at the right place.
+ */
+ p = addr;
+ while (p < addr + FILE_TEST_OFFSET / sizeof(uintptr_t)) {
+ g_assert(*p == 0);
+ p++;
+ }
+ g_assert_cmpint(cpu_to_be64(*p) >> 32, ==, QEMU_VM_FILE_MAGIC);
+
+ munmap(addr, size);
+ close(fd);
+#endif
+}
+
+static void test_precopy_file_offset(void)
+{
+ g_autofree char *uri = g_strdup_printf("file:%s/%s,offset=%d", tmpfs,
+ FILE_TEST_FILENAME,
+ FILE_TEST_OFFSET);
+ MigrateCommon args = {
+ .connect_uri = uri,
+ .listen_uri = "defer",
+ .finish_hook = file_offset_finish_hook,
+ };
+
+ test_file_common(&args, false);
+}
+
+static void test_precopy_file_offset_bad(void)
+{
+ /* using a value not supported by qemu_strtosz() */
+ g_autofree char *uri = g_strdup_printf("file:%s/%s,offset=0x20M",
+ tmpfs, FILE_TEST_FILENAME);
+ MigrateCommon args = {
+ .connect_uri = uri,
+ .listen_uri = "defer",
+ .result = MIG_TEST_QMP_ERROR,
+ };
+
+ test_file_common(&args, false);
+}
+
+static void *test_mode_reboot_start(QTestState *from, QTestState *to)
+{
+ migrate_set_parameter_str(from, "mode", "cpr-reboot");
+ migrate_set_parameter_str(to, "mode", "cpr-reboot");
+
+ migrate_set_capability(from, "x-ignore-shared", true);
+ migrate_set_capability(to, "x-ignore-shared", true);
+
+ return NULL;
+}
+
+static void test_mode_reboot(void)
+{
+ g_autofree char *uri = g_strdup_printf("file:%s/%s", tmpfs,
+ FILE_TEST_FILENAME);
+ MigrateCommon args = {
+ .start.use_shmem = true,
+ .connect_uri = uri,
+ .listen_uri = "defer",
+ .start_hook = test_mode_reboot_start
+ };
+
+ test_file_common(&args, true);
+}
+
static void test_precopy_tcp_plain(void)
{
MigrateCommon args = {
close(pair[0]);
/* Start incoming migration from the 1st socket */
- qtest_qmp_assert_success(to, "{ 'execute': 'migrate-incoming',"
- " 'arguments': { 'uri': 'fd:fd-mig' }}");
+ migrate_incoming_qmp(to, "fd:fd-mig", "{}");
/* Send the 2nd socket to the target */
qtest_qmp_fds_assert_success(from, &pair[1], 1,
/*
* We want the test to be stable and as fast as possible.
- * E.g., with 1Gb/s bandwith migration may pass without throttling,
+ * E.g., with 1Gb/s bandwidth migration may pass without throttling,
* so we need to decrease a bandwidth.
*/
const int64_t init_pct = 5, inc_pct = 25, max_pct = 95;
migrate_set_capability(to, "multifd", true);
/* Start incoming migration from the 1st socket */
- qtest_qmp_assert_success(to, "{ 'execute': 'migrate-incoming',"
- " 'arguments': { 'uri': 'tcp:127.0.0.1:0' }}");
+ migrate_incoming_qmp(to, "tcp:127.0.0.1:0", "{}");
return NULL;
}
migrate_set_capability(to, "multifd", true);
/* Start incoming migration from the 1st socket */
- qtest_qmp_assert_success(to, "{ 'execute': 'migrate-incoming',"
- " 'arguments': { 'uri': 'tcp:127.0.0.1:0' }}");
+ migrate_incoming_qmp(to, "tcp:127.0.0.1:0", "{}");
/* Wait for the first serial output from the source */
wait_for_serial("src_serial");
migrate_set_capability(to2, "multifd", true);
/* Start incoming migration from the 1st socket */
- qtest_qmp_assert_success(to2, "{ 'execute': 'migrate-incoming',"
- " 'arguments': { 'uri': 'tcp:127.0.0.1:0' }}");
+ migrate_incoming_qmp(to2, "tcp:127.0.0.1:0", "{}");
g_free(uri);
uri = migrate_get_socket_address(to2, "socket-address");
static QTestState *dirtylimit_start_vm(void)
{
QTestState *vm = NULL;
- g_autofree gchar *cmd = NULL;
- const char *arch = qtest_get_arch();
- g_autofree char *bootpath = NULL;
-
- assert((strcmp(arch, "x86_64") == 0));
- bootpath = g_strdup_printf("%s/bootsect", tmpfs);
- assert(sizeof(x86_bootsect) == 512);
- init_bootfile(bootpath, x86_bootsect, sizeof(x86_bootsect));
-
+ g_autofree gchar *
cmd = g_strdup_printf("-accel kvm,dirty-ring-size=4096 "
"-name dirtylimit-test,debug-threads=on "
"-m 150M -smp 1 "
static void dirtylimit_stop_vm(QTestState *vm)
{
qtest_quit(vm);
- cleanup("bootsect");
cleanup("vm_serial");
}
dirtylimit_stop_vm(vm);
}
+static void migrate_dirty_limit_wait_showup(QTestState *from,
+ const int64_t period,
+ const int64_t value)
+{
+ /* Enable dirty limit capability */
+ migrate_set_capability(from, "dirty-limit", true);
+
+ /* Set dirty limit parameters */
+ migrate_set_parameter_int(from, "x-vcpu-dirty-limit-period", period);
+ migrate_set_parameter_int(from, "vcpu-dirty-limit", value);
+
+ /* Make sure migrate can't converge */
+ migrate_ensure_non_converge(from);
+
+ /* To check limit rate after precopy */
+ migrate_set_capability(from, "pause-before-switchover", true);
+
+ /* Wait for the serial output from the source */
+ wait_for_serial("src_serial");
+}
+
+/*
+ * This test does:
+ * source destination
+ * start vm
+ * start incoming vm
+ * migrate
+ * wait dirty limit to begin
+ * cancel migrate
+ * cancellation check
+ * restart incoming vm
+ * migrate
+ * wait dirty limit to begin
+ * wait pre-switchover event
+ * convergence condition check
+ *
+ * And see if dirty limit migration works correctly.
+ * This test case involves many passes, so it runs in slow mode only.
+ */
+static void test_migrate_dirty_limit(void)
+{
+ g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
+ QTestState *from, *to;
+ int64_t remaining;
+ uint64_t throttle_us_per_full;
+ /*
+ * We want the test to be stable and as fast as possible.
+ * E.g., with 1Gb/s bandwidth migration may pass without dirty limit,
+ * so we need to decrease a bandwidth.
+ */
+ const int64_t dirtylimit_period = 1000, dirtylimit_value = 50;
+ 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;
+ int max_try_count = 10;
+ MigrateCommon args = {
+ .start = {
+ .hide_stderr = true,
+ .use_dirty_ring = true,
+ },
+ .listen_uri = uri,
+ .connect_uri = uri,
+ };
+
+ /* Start src, dst vm */
+ if (test_migrate_start(&from, &to, args.listen_uri, &args.start)) {
+ return;
+ }
+
+ /* Prepare for dirty limit migration and wait src vm show up */
+ migrate_dirty_limit_wait_showup(from, dirtylimit_period, dirtylimit_value);
+
+ /* Start migrate */
+ migrate_qmp(from, uri, "{}");
+
+ /* Wait for dirty limit throttle begin */
+ throttle_us_per_full = 0;
+ while (throttle_us_per_full == 0) {
+ throttle_us_per_full =
+ read_migrate_property_int(from, "dirty-limit-throttle-time-per-round");
+ usleep(100);
+ g_assert_false(got_src_stop);
+ }
+
+ /* Now cancel migrate and wait for dirty limit throttle switch off */
+ migrate_cancel(from);
+ wait_for_migration_status(from, "cancelled", NULL);
+
+ /* Check if dirty limit throttle switched off, set timeout 1ms */
+ do {
+ throttle_us_per_full =
+ read_migrate_property_int(from, "dirty-limit-throttle-time-per-round");
+ usleep(100);
+ g_assert_false(got_src_stop);
+ } while (throttle_us_per_full != 0 && --max_try_count);
+
+ /* Assert dirty limit is not in service */
+ g_assert_cmpint(throttle_us_per_full, ==, 0);
+
+ args = (MigrateCommon) {
+ .start = {
+ .only_target = true,
+ .use_dirty_ring = true,
+ },
+ .listen_uri = uri,
+ .connect_uri = uri,
+ };
+
+ /* Restart dst vm, src vm already show up so we needn't wait anymore */
+ if (test_migrate_start(&from, &to, args.listen_uri, &args.start)) {
+ return;
+ }
+
+ /* Start migrate */
+ migrate_qmp(from, uri, "{}");
+
+ /* Wait for dirty limit throttle begin */
+ throttle_us_per_full = 0;
+ while (throttle_us_per_full == 0) {
+ throttle_us_per_full =
+ read_migrate_property_int(from, "dirty-limit-throttle-time-per-round");
+ usleep(100);
+ g_assert_false(got_src_stop);
+ }
+
+ /*
+ * The dirty limit rate should equals the return value of
+ * query-vcpu-dirty-limit if dirty limit cap set
+ */
+ g_assert_cmpint(dirtylimit_value, ==, get_limit_rate(from));
+
+ /* Now, we have tested if dirty limit 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 if migration
+ * satisfy the convergence condition
+ */
+ wait_for_migration_status(from, "pre-switchover", NULL);
+
+ 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 bool kvm_dirty_ring_supported(void)
{
#if defined(__linux__) && defined(HOST_X86_64)
bool has_uffd;
const char *arch;
g_autoptr(GError) err = NULL;
+ const char *qemu_src = getenv(QEMU_ENV_SRC);
+ const char *qemu_dst = getenv(QEMU_ENV_DST);
int ret;
g_test_init(&argc, &argv, NULL);
+ /*
+ * The default QTEST_QEMU_BINARY must always be provided because
+ * that is what helpers use to query the accel type and
+ * architecture.
+ */
+ if (qemu_src && qemu_dst) {
+ g_test_message("Only one of %s, %s is allowed",
+ QEMU_ENV_SRC, QEMU_ENV_DST);
+ exit(1);
+ }
+
has_kvm = qtest_has_accel("kvm");
has_tcg = qtest_has_accel("tcg");
g_get_tmp_dir(), err->message);
}
g_assert(tmpfs);
+ bootfile_create(tmpfs);
module_call_init(MODULE_INIT_QOM);
qtest_add_func("/migration/postcopy/recovery/compress/plain",
test_postcopy_recovery_compress);
}
+#ifndef _WIN32
+ qtest_add_func("/migration/postcopy/recovery/double-failures",
+ test_postcopy_recovery_double_fail);
+#endif /* _WIN32 */
+
}
qtest_add_func("/migration/bad_dest", test_baddest);
+#ifndef _WIN32
+ if (!g_str_equal(arch, "s390x")) {
+ qtest_add_func("/migration/analyze-script", test_analyze_script);
+ }
+#endif
qtest_add_func("/migration/precopy/unix/plain", test_precopy_unix_plain);
qtest_add_func("/migration/precopy/unix/xbzrle", test_precopy_unix_xbzrle);
/*
qtest_add_func("/migration/precopy/unix/compress/nowait",
test_precopy_unix_compress_nowait);
}
+
+ qtest_add_func("/migration/precopy/file",
+ test_precopy_file);
+ qtest_add_func("/migration/precopy/file/offset",
+ test_precopy_file_offset);
+ qtest_add_func("/migration/precopy/file/offset/bad",
+ test_precopy_file_offset_bad);
+
+ /*
+ * Our CI system has problems with shared memory.
+ * Don't run this test until we find a workaround.
+ */
+ if (getenv("QEMU_TEST_FLAKY_TESTS")) {
+ qtest_add_func("/migration/mode/reboot", test_mode_reboot);
+ }
+
#ifdef CONFIG_GNUTLS
qtest_add_func("/migration/precopy/unix/tls/psk",
test_precopy_unix_tls_psk);
*/
if (g_test_slow()) {
qtest_add_func("/migration/auto_converge", test_migrate_auto_converge);
+ if (g_str_equal(arch, "x86_64") &&
+ has_kvm && kvm_dirty_ring_supported()) {
+ qtest_add_func("/migration/dirty_limit", test_migrate_dirty_limit);
+ }
}
qtest_add_func("/migration/multifd/tcp/plain/none",
test_multifd_tcp_none);
g_assert_cmpint(ret, ==, 0);
+ bootfile_delete();
ret = rmdir(tmpfs);
if (ret != 0) {
g_test_message("unable to rmdir: path (%s): %s",
projects / mirror_qemu.git / blobdiff