1097 lines
31 KiB
C
1097 lines
31 KiB
C
/*
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* QTest testcase for migration
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*
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* Copyright (c) 2016-2018 Red Hat, Inc. and/or its affiliates
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* based on the vhost-user-test.c that is:
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* Copyright (c) 2014 Virtual Open Systems Sarl.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "libqtest.h"
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#include "qapi/qmp/qdict.h"
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#include "qapi/qmp/qjson.h"
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#include "qemu/option.h"
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#include "qemu/range.h"
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#include "qemu/sockets.h"
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#include "chardev/char.h"
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#include "sysemu/sysemu.h"
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#include "qapi/qapi-visit-sockets.h"
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#include "qapi/qobject-input-visitor.h"
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#include "qapi/qobject-output-visitor.h"
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#include "migration/migration-test.h"
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/* TODO actually test the results and get rid of this */
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#define qtest_qmp_discard_response(...) qobject_unref(qtest_qmp(__VA_ARGS__))
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unsigned start_address;
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unsigned end_address;
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bool got_stop;
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static bool uffd_feature_thread_id;
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#if defined(__linux__)
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#include <sys/syscall.h>
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#include <sys/vfs.h>
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#endif
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#if defined(__linux__) && defined(__NR_userfaultfd) && defined(CONFIG_EVENTFD)
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#include <sys/eventfd.h>
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#include <sys/ioctl.h>
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#include <linux/userfaultfd.h>
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static bool ufd_version_check(void)
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{
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struct uffdio_api api_struct;
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uint64_t ioctl_mask;
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int ufd = syscall(__NR_userfaultfd, O_CLOEXEC);
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if (ufd == -1) {
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g_test_message("Skipping test: userfaultfd not available");
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return false;
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}
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api_struct.api = UFFD_API;
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api_struct.features = 0;
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if (ioctl(ufd, UFFDIO_API, &api_struct)) {
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g_test_message("Skipping test: UFFDIO_API failed");
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return false;
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}
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uffd_feature_thread_id = api_struct.features & UFFD_FEATURE_THREAD_ID;
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ioctl_mask = (__u64)1 << _UFFDIO_REGISTER |
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(__u64)1 << _UFFDIO_UNREGISTER;
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if ((api_struct.ioctls & ioctl_mask) != ioctl_mask) {
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g_test_message("Skipping test: Missing userfault feature");
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return false;
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}
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return true;
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}
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#else
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static bool ufd_version_check(void)
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{
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g_test_message("Skipping test: Userfault not available (builtdtime)");
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return false;
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}
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#endif
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static const char *tmpfs;
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/* The boot file modifies memory area in [start_address, end_address)
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* repeatedly. It outputs a 'B' at a fixed rate while it's still running.
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*/
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#include "tests/migration/i386/a-b-bootblock.h"
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#include "tests/migration/aarch64/a-b-kernel.h"
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static void init_bootfile(const char *bootpath, void *content)
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{
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FILE *bootfile = fopen(bootpath, "wb");
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g_assert_cmpint(fwrite(content, 512, 1, bootfile), ==, 1);
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fclose(bootfile);
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}
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#include "tests/migration/s390x/a-b-bios.h"
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static void init_bootfile_s390x(const char *bootpath)
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{
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FILE *bootfile = fopen(bootpath, "wb");
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size_t len = sizeof(s390x_elf);
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g_assert_cmpint(fwrite(s390x_elf, len, 1, bootfile), ==, 1);
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fclose(bootfile);
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}
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/*
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* Wait for some output in the serial output file,
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* we get an 'A' followed by an endless string of 'B's
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* but on the destination we won't have the A.
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*/
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static void wait_for_serial(const char *side)
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{
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char *serialpath = g_strdup_printf("%s/%s", tmpfs, side);
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FILE *serialfile = fopen(serialpath, "r");
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const char *arch = qtest_get_arch();
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int started = (strcmp(side, "src_serial") == 0 &&
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strcmp(arch, "ppc64") == 0) ? 0 : 1;
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g_free(serialpath);
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do {
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int readvalue = fgetc(serialfile);
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if (!started) {
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/* SLOF prints its banner before starting test,
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* to ignore it, mark the start of the test with '_',
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* ignore all characters until this marker
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*/
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switch (readvalue) {
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case '_':
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started = 1;
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break;
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case EOF:
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fseek(serialfile, 0, SEEK_SET);
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usleep(1000);
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break;
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}
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continue;
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}
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switch (readvalue) {
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case 'A':
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/* Fine */
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break;
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case 'B':
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/* It's alive! */
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fclose(serialfile);
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return;
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case EOF:
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started = (strcmp(side, "src_serial") == 0 &&
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strcmp(arch, "ppc64") == 0) ? 0 : 1;
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fseek(serialfile, 0, SEEK_SET);
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usleep(1000);
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break;
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default:
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fprintf(stderr, "Unexpected %d on %s serial\n", readvalue, side);
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g_assert_not_reached();
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}
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} while (true);
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}
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static void stop_cb(void *opaque, const char *name, QDict *data)
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{
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if (!strcmp(name, "STOP")) {
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got_stop = true;
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}
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}
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/*
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* Events can get in the way of responses we are actually waiting for.
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*/
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GCC_FMT_ATTR(2, 3)
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static QDict *wait_command(QTestState *who, const char *command, ...)
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{
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va_list ap;
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va_start(ap, command);
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qtest_qmp_vsend(who, command, ap);
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va_end(ap);
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return qtest_qmp_receive_success(who, stop_cb, NULL);
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}
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/*
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* Note: caller is responsible to free the returned object via
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* qobject_unref() after use
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*/
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static QDict *migrate_query(QTestState *who)
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{
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return wait_command(who, "{ 'execute': 'query-migrate' }");
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}
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/*
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* Note: caller is responsible to free the returned object via
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* g_free() after use
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*/
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static gchar *migrate_query_status(QTestState *who)
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{
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QDict *rsp_return = migrate_query(who);
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gchar *status = g_strdup(qdict_get_str(rsp_return, "status"));
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g_assert(status);
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qobject_unref(rsp_return);
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return status;
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}
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/*
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* It's tricky to use qemu's migration event capability with qtest,
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* events suddenly appearing confuse the qmp()/hmp() responses.
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*/
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static int64_t read_ram_property_int(QTestState *who, const char *property)
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{
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QDict *rsp_return, *rsp_ram;
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int64_t result;
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rsp_return = migrate_query(who);
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if (!qdict_haskey(rsp_return, "ram")) {
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/* Still in setup */
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result = 0;
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} else {
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rsp_ram = qdict_get_qdict(rsp_return, "ram");
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result = qdict_get_try_int(rsp_ram, property, 0);
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}
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qobject_unref(rsp_return);
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return result;
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}
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static uint64_t get_migration_pass(QTestState *who)
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{
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return read_ram_property_int(who, "dirty-sync-count");
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}
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static void read_blocktime(QTestState *who)
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{
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QDict *rsp_return;
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rsp_return = migrate_query(who);
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g_assert(qdict_haskey(rsp_return, "postcopy-blocktime"));
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qobject_unref(rsp_return);
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}
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static void wait_for_migration_status(QTestState *who,
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const char *goal)
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{
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while (true) {
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bool completed;
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char *status;
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status = migrate_query_status(who);
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completed = strcmp(status, goal) == 0;
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g_assert_cmpstr(status, !=, "failed");
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g_free(status);
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if (completed) {
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return;
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}
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usleep(1000);
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}
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}
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static void wait_for_migration_complete(QTestState *who)
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{
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wait_for_migration_status(who, "completed");
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}
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static void wait_for_migration_pass(QTestState *who)
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{
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uint64_t initial_pass = get_migration_pass(who);
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uint64_t pass;
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/* Wait for the 1st sync */
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while (!got_stop && !initial_pass) {
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usleep(1000);
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initial_pass = get_migration_pass(who);
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}
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do {
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usleep(1000);
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pass = get_migration_pass(who);
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} while (pass == initial_pass && !got_stop);
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}
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static void check_guests_ram(QTestState *who)
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{
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/* Our ASM test will have been incrementing one byte from each page from
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* start_address to < end_address in order. This gives us a constraint
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* that any page's byte should be equal or less than the previous pages
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* byte (mod 256); and they should all be equal except for one transition
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* at the point where we meet the incrementer. (We're running this with
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* the guest stopped).
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*/
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unsigned address;
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uint8_t first_byte;
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uint8_t last_byte;
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bool hit_edge = false;
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bool bad = false;
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qtest_memread(who, start_address, &first_byte, 1);
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last_byte = first_byte;
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for (address = start_address + TEST_MEM_PAGE_SIZE; address < end_address;
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address += TEST_MEM_PAGE_SIZE)
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{
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uint8_t b;
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qtest_memread(who, address, &b, 1);
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if (b != last_byte) {
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if (((b + 1) % 256) == last_byte && !hit_edge) {
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/* This is OK, the guest stopped at the point of
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* incrementing the previous page but didn't get
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* to us yet.
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*/
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hit_edge = true;
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last_byte = b;
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} else {
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fprintf(stderr, "Memory content inconsistency at %x"
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" first_byte = %x last_byte = %x current = %x"
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" hit_edge = %x\n",
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address, first_byte, last_byte, b, hit_edge);
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bad = true;
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}
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}
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}
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g_assert_false(bad);
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}
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static void cleanup(const char *filename)
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{
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char *path = g_strdup_printf("%s/%s", tmpfs, filename);
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unlink(path);
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g_free(path);
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}
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static char *get_shmem_opts(const char *mem_size, const char *shmem_path)
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{
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return g_strdup_printf("-object memory-backend-file,id=mem0,size=%s"
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",mem-path=%s,share=on -numa node,memdev=mem0",
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mem_size, shmem_path);
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}
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static char *SocketAddress_to_str(SocketAddress *addr)
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{
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switch (addr->type) {
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case SOCKET_ADDRESS_TYPE_INET:
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return g_strdup_printf("tcp:%s:%s",
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addr->u.inet.host,
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addr->u.inet.port);
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case SOCKET_ADDRESS_TYPE_UNIX:
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return g_strdup_printf("unix:%s",
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addr->u.q_unix.path);
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case SOCKET_ADDRESS_TYPE_FD:
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return g_strdup_printf("fd:%s", addr->u.fd.str);
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case SOCKET_ADDRESS_TYPE_VSOCK:
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return g_strdup_printf("tcp:%s:%s",
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addr->u.vsock.cid,
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addr->u.vsock.port);
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default:
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return g_strdup("unknown address type");
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}
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}
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static char *migrate_get_socket_address(QTestState *who, const char *parameter)
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{
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QDict *rsp;
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char *result;
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Error *local_err = NULL;
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SocketAddressList *addrs;
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Visitor *iv = NULL;
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QObject *object;
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rsp = migrate_query(who);
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object = qdict_get(rsp, parameter);
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iv = qobject_input_visitor_new(object);
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visit_type_SocketAddressList(iv, NULL, &addrs, &local_err);
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visit_free(iv);
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/* we are only using a single address */
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result = SocketAddress_to_str(addrs->value);
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qapi_free_SocketAddressList(addrs);
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qobject_unref(rsp);
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return result;
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}
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static long long migrate_get_parameter(QTestState *who, const char *parameter)
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{
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QDict *rsp;
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long long result;
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rsp = wait_command(who, "{ 'execute': 'query-migrate-parameters' }");
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result = qdict_get_int(rsp, parameter);
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qobject_unref(rsp);
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return result;
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}
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static void migrate_check_parameter(QTestState *who, const char *parameter,
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long long value)
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{
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long long result;
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result = migrate_get_parameter(who, parameter);
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g_assert_cmpint(result, ==, value);
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}
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static void migrate_set_parameter(QTestState *who, const char *parameter,
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long long value)
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{
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QDict *rsp;
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rsp = qtest_qmp(who,
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"{ 'execute': 'migrate-set-parameters',"
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"'arguments': { %s: %lld } }",
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parameter, value);
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g_assert(qdict_haskey(rsp, "return"));
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qobject_unref(rsp);
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migrate_check_parameter(who, parameter, value);
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}
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static void migrate_pause(QTestState *who)
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{
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QDict *rsp;
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rsp = wait_command(who, "{ 'execute': 'migrate-pause' }");
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qobject_unref(rsp);
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}
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static void migrate_recover(QTestState *who, const char *uri)
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{
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QDict *rsp;
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rsp = wait_command(who,
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"{ 'execute': 'migrate-recover', "
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" 'id': 'recover-cmd', "
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" 'arguments': { 'uri': %s } }",
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uri);
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qobject_unref(rsp);
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}
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static void migrate_set_capability(QTestState *who, const char *capability,
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bool value)
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{
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QDict *rsp;
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rsp = qtest_qmp(who,
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"{ 'execute': 'migrate-set-capabilities',"
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"'arguments': { "
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"'capabilities': [ { "
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"'capability': %s, 'state': %i } ] } }",
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capability, value);
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g_assert(qdict_haskey(rsp, "return"));
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qobject_unref(rsp);
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}
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/*
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* Send QMP command "migrate".
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* Arguments are built from @fmt... (formatted like
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* qobject_from_jsonf_nofail()) with "uri": @uri spliced in.
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*/
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GCC_FMT_ATTR(3, 4)
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static void migrate(QTestState *who, const char *uri, const char *fmt, ...)
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{
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va_list ap;
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QDict *args, *rsp;
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va_start(ap, fmt);
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args = qdict_from_vjsonf_nofail(fmt, ap);
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va_end(ap);
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g_assert(!qdict_haskey(args, "uri"));
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qdict_put_str(args, "uri", uri);
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rsp = qmp("{ 'execute': 'migrate', 'arguments': %p}", args);
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g_assert(qdict_haskey(rsp, "return"));
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qobject_unref(rsp);
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}
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static void migrate_postcopy_start(QTestState *from, QTestState *to)
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{
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QDict *rsp;
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rsp = wait_command(from, "{ 'execute': 'migrate-start-postcopy' }");
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qobject_unref(rsp);
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if (!got_stop) {
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qtest_qmp_eventwait(from, "STOP");
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}
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qtest_qmp_eventwait(to, "RESUME");
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}
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static int test_migrate_start(QTestState **from, QTestState **to,
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const char *uri, bool hide_stderr,
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bool use_shmem)
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{
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gchar *cmd_src, *cmd_dst;
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char *bootpath = NULL;
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char *extra_opts = NULL;
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char *shmem_path = NULL;
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const char *arch = qtest_get_arch();
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const char *accel = "kvm:tcg";
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if (use_shmem) {
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if (!g_file_test("/dev/shm", G_FILE_TEST_IS_DIR)) {
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g_test_skip("/dev/shm is not supported");
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return -1;
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}
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shmem_path = g_strdup_printf("/dev/shm/qemu-%d", getpid());
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}
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got_stop = false;
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bootpath = g_strdup_printf("%s/bootsect", tmpfs);
|
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if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
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init_bootfile(bootpath, x86_bootsect);
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extra_opts = use_shmem ? get_shmem_opts("150M", shmem_path) : NULL;
|
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cmd_src = g_strdup_printf("-machine accel=%s -m 150M"
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" -name source,debug-threads=on"
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" -serial file:%s/src_serial"
|
|
" -drive file=%s,format=raw %s",
|
|
accel, tmpfs, bootpath,
|
|
extra_opts ? extra_opts : "");
|
|
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 %s",
|
|
accel, tmpfs, bootpath, uri,
|
|
extra_opts ? extra_opts : "");
|
|
start_address = X86_TEST_MEM_START;
|
|
end_address = X86_TEST_MEM_END;
|
|
} else if (g_str_equal(arch, "s390x")) {
|
|
init_bootfile_s390x(bootpath);
|
|
extra_opts = use_shmem ? get_shmem_opts("128M", shmem_path) : NULL;
|
|
cmd_src = g_strdup_printf("-machine accel=%s -m 128M"
|
|
" -name source,debug-threads=on"
|
|
" -serial file:%s/src_serial -bios %s %s",
|
|
accel, tmpfs, bootpath,
|
|
extra_opts ? extra_opts : "");
|
|
cmd_dst = g_strdup_printf("-machine accel=%s -m 128M"
|
|
" -name target,debug-threads=on"
|
|
" -serial file:%s/dest_serial -bios %s"
|
|
" -incoming %s %s",
|
|
accel, tmpfs, bootpath, uri,
|
|
extra_opts ? extra_opts : "");
|
|
start_address = S390_TEST_MEM_START;
|
|
end_address = S390_TEST_MEM_END;
|
|
} else if (strcmp(arch, "ppc64") == 0) {
|
|
extra_opts = use_shmem ? get_shmem_opts("256M", shmem_path) : NULL;
|
|
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' %s", accel, tmpfs, end_address,
|
|
start_address, extra_opts ? extra_opts : "");
|
|
cmd_dst = g_strdup_printf("-machine accel=%s -m 256M"
|
|
" -name target,debug-threads=on"
|
|
" -serial file:%s/dest_serial"
|
|
" -incoming %s %s",
|
|
accel, tmpfs, uri,
|
|
extra_opts ? extra_opts : "");
|
|
|
|
start_address = PPC_TEST_MEM_START;
|
|
end_address = PPC_TEST_MEM_END;
|
|
} else if (strcmp(arch, "aarch64") == 0) {
|
|
init_bootfile(bootpath, aarch64_kernel);
|
|
extra_opts = use_shmem ? get_shmem_opts("150M", shmem_path) : NULL;
|
|
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 %s",
|
|
accel, tmpfs, bootpath,
|
|
extra_opts ? extra_opts : "");
|
|
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 %s",
|
|
accel, tmpfs, bootpath, uri,
|
|
extra_opts ? extra_opts : "");
|
|
|
|
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);
|
|
g_free(extra_opts);
|
|
|
|
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);
|
|
|
|
/*
|
|
* Remove shmem file immediately to avoid memory leak in test failed case.
|
|
* It's valid becase QEMU has already opened this file
|
|
*/
|
|
if (use_shmem) {
|
|
unlink(shmem_path);
|
|
g_free(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");
|
|
}
|
|
|
|
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 deprecated_set_cache_size(QTestState *who, long long value)
|
|
{
|
|
QDict *rsp;
|
|
|
|
rsp = qtest_qmp(who, "{ 'execute': 'migrate-set-cache-size',"
|
|
"'arguments': { 'value': %lld } }", value);
|
|
g_assert(qdict_haskey(rsp, "return"));
|
|
qobject_unref(rsp);
|
|
migrate_check_parameter(who, "xbzrle-cache-size", value);
|
|
}
|
|
|
|
static void test_deprecated(void)
|
|
{
|
|
QTestState *from;
|
|
|
|
from = qtest_start("-machine none");
|
|
|
|
deprecated_set_downtime(from, 0.12345);
|
|
deprecated_set_speed(from, 12345);
|
|
deprecated_set_cache_size(from, 4096);
|
|
|
|
qtest_quit(from);
|
|
}
|
|
|
|
static int migrate_postcopy_prepare(QTestState **from_ptr,
|
|
QTestState **to_ptr,
|
|
bool hide_error)
|
|
{
|
|
char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
|
|
QTestState *from, *to;
|
|
|
|
if (test_migrate_start(&from, &to, uri, hide_error, false)) {
|
|
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, false)) {
|
|
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, 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);
|
|
}
|
|
|
|
#if 0
|
|
/* Currently upset on aarch64 TCG */
|
|
static void test_ignore_shared(void)
|
|
{
|
|
char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
|
|
QTestState *from, *to;
|
|
|
|
if (test_migrate_start(&from, &to, uri, false, true)) {
|
|
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(from, uri, "{}");
|
|
|
|
wait_for_migration_pass(from);
|
|
|
|
if (!got_stop) {
|
|
qtest_qmp_eventwait(from, "STOP");
|
|
}
|
|
|
|
qtest_qmp_eventwait(to, "RESUME");
|
|
|
|
wait_for_serial("dest_serial");
|
|
wait_for_migration_complete(from);
|
|
|
|
/* Check whether shared RAM has been really skipped */
|
|
g_assert_cmpint(read_ram_property_int(from, "transferred"), <, 1024 * 1024);
|
|
|
|
test_migrate_end(from, to, true);
|
|
g_free(uri);
|
|
}
|
|
#endif
|
|
|
|
static void test_xbzrle(const char *uri)
|
|
{
|
|
QTestState *from, *to;
|
|
|
|
if (test_migrate_start(&from, &to, uri, false, 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);
|
|
|
|
migrate_set_parameter(from, "xbzrle-cache-size", 33554432);
|
|
|
|
migrate_set_capability(from, "xbzrle", "true");
|
|
migrate_set_capability(to, "xbzrle", "true");
|
|
/* Wait for the first serial output from the source */
|
|
wait_for_serial("src_serial");
|
|
|
|
migrate(from, uri, "{}");
|
|
|
|
wait_for_migration_pass(from);
|
|
|
|
/* 300ms 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);
|
|
}
|
|
|
|
static void test_xbzrle_unix(void)
|
|
{
|
|
char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
|
|
|
|
test_xbzrle(uri);
|
|
g_free(uri);
|
|
}
|
|
|
|
static void test_precopy_tcp(void)
|
|
{
|
|
char *uri;
|
|
QTestState *from, *to;
|
|
|
|
if (test_migrate_start(&from, &to, "tcp:127.0.0.1:0", false, 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");
|
|
|
|
uri = migrate_get_socket_address(to, "socket-address");
|
|
|
|
migrate(from, uri, "{}");
|
|
|
|
wait_for_migration_pass(from);
|
|
|
|
/* 300ms 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", template, strerror(errno));
|
|
}
|
|
g_assert(tmpfs);
|
|
|
|
module_call_init(MODULE_INIT_QOM);
|
|
|
|
qtest_add_func("/migration/postcopy/unix", test_postcopy);
|
|
qtest_add_func("/migration/postcopy/recovery", test_postcopy_recovery);
|
|
qtest_add_func("/migration/deprecated", test_deprecated);
|
|
qtest_add_func("/migration/bad_dest", test_baddest);
|
|
qtest_add_func("/migration/precopy/unix", test_precopy_unix);
|
|
qtest_add_func("/migration/precopy/tcp", test_precopy_tcp);
|
|
/* qtest_add_func("/migration/ignore_shared", test_ignore_shared); */
|
|
qtest_add_func("/migration/xbzrle/unix", test_xbzrle_unix);
|
|
|
|
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;
|
|
}
|