2 * QTest testcase for migration
4 * Copyright (c) 2016-2018 Red Hat, Inc. and/or its affiliates
5 * based on the vhost-user-test.c that is:
6 * Copyright (c) 2014 Virtual Open Systems Sarl.
8 * This work is licensed under the terms of the GNU GPL, version 2 or later.
9 * See the COPYING file in the top-level directory.
13 #include "qemu/osdep.h"
16 #include "qapi/qmp/qdict.h"
17 #include "qemu/module.h"
18 #include "qemu/option.h"
19 #include "qemu/range.h"
20 #include "qemu/sockets.h"
21 #include "chardev/char.h"
22 #include "qapi/qapi-visit-sockets.h"
23 #include "qapi/qobject-input-visitor.h"
24 #include "qapi/qobject-output-visitor.h"
26 #include "migration-helpers.h"
27 #include "migration/migration-test.h"
29 /* TODO actually test the results and get rid of this */
30 #define qtest_qmp_discard_response(...) qobject_unref(qtest_qmp(__VA_ARGS__))
32 unsigned start_address
;
34 static bool uffd_feature_thread_id
;
36 #if defined(__linux__)
37 #include <sys/syscall.h>
41 #if defined(__linux__) && defined(__NR_userfaultfd) && defined(CONFIG_EVENTFD)
42 #include <sys/eventfd.h>
43 #include <sys/ioctl.h>
44 #include <linux/userfaultfd.h>
46 static bool ufd_version_check(void)
48 struct uffdio_api api_struct
;
51 int ufd
= syscall(__NR_userfaultfd
, O_CLOEXEC
);
54 g_test_message("Skipping test: userfaultfd not available");
58 api_struct
.api
= UFFD_API
;
59 api_struct
.features
= 0;
60 if (ioctl(ufd
, UFFDIO_API
, &api_struct
)) {
61 g_test_message("Skipping test: UFFDIO_API failed");
64 uffd_feature_thread_id
= api_struct
.features
& UFFD_FEATURE_THREAD_ID
;
66 ioctl_mask
= (__u64
)1 << _UFFDIO_REGISTER
|
67 (__u64
)1 << _UFFDIO_UNREGISTER
;
68 if ((api_struct
.ioctls
& ioctl_mask
) != ioctl_mask
) {
69 g_test_message("Skipping test: Missing userfault feature");
77 static bool ufd_version_check(void)
79 g_test_message("Skipping test: Userfault not available (builtdtime)");
85 static const char *tmpfs
;
87 /* The boot file modifies memory area in [start_address, end_address)
88 * repeatedly. It outputs a 'B' at a fixed rate while it's still running.
90 #include "tests/migration/i386/a-b-bootblock.h"
91 #include "tests/migration/aarch64/a-b-kernel.h"
92 #include "tests/migration/s390x/a-b-bios.h"
94 static void init_bootfile(const char *bootpath
, void *content
, size_t len
)
96 FILE *bootfile
= fopen(bootpath
, "wb");
98 g_assert_cmpint(fwrite(content
, len
, 1, bootfile
), ==, 1);
103 * Wait for some output in the serial output file,
104 * we get an 'A' followed by an endless string of 'B's
105 * but on the destination we won't have the A.
107 static void wait_for_serial(const char *side
)
109 char *serialpath
= g_strdup_printf("%s/%s", tmpfs
, side
);
110 FILE *serialfile
= fopen(serialpath
, "r");
111 const char *arch
= qtest_get_arch();
112 int started
= (strcmp(side
, "src_serial") == 0 &&
113 strcmp(arch
, "ppc64") == 0) ? 0 : 1;
117 int readvalue
= fgetc(serialfile
);
120 /* SLOF prints its banner before starting test,
121 * to ignore it, mark the start of the test with '_',
122 * ignore all characters until this marker
129 fseek(serialfile
, 0, SEEK_SET
);
146 started
= (strcmp(side
, "src_serial") == 0 &&
147 strcmp(arch
, "ppc64") == 0) ? 0 : 1;
148 fseek(serialfile
, 0, SEEK_SET
);
153 fprintf(stderr
, "Unexpected %d on %s serial\n", readvalue
, side
);
154 g_assert_not_reached();
160 * It's tricky to use qemu's migration event capability with qtest,
161 * events suddenly appearing confuse the qmp()/hmp() responses.
164 static int64_t read_ram_property_int(QTestState
*who
, const char *property
)
166 QDict
*rsp_return
, *rsp_ram
;
169 rsp_return
= migrate_query(who
);
170 if (!qdict_haskey(rsp_return
, "ram")) {
174 rsp_ram
= qdict_get_qdict(rsp_return
, "ram");
175 result
= qdict_get_try_int(rsp_ram
, property
, 0);
177 qobject_unref(rsp_return
);
181 static int64_t read_migrate_property_int(QTestState
*who
, const char *property
)
186 rsp_return
= migrate_query(who
);
187 result
= qdict_get_try_int(rsp_return
, property
, 0);
188 qobject_unref(rsp_return
);
192 static uint64_t get_migration_pass(QTestState
*who
)
194 return read_ram_property_int(who
, "dirty-sync-count");
197 static void read_blocktime(QTestState
*who
)
201 rsp_return
= migrate_query(who
);
202 g_assert(qdict_haskey(rsp_return
, "postcopy-blocktime"));
203 qobject_unref(rsp_return
);
206 static void wait_for_migration_pass(QTestState
*who
)
208 uint64_t initial_pass
= get_migration_pass(who
);
211 /* Wait for the 1st sync */
212 while (!got_stop
&& !initial_pass
) {
214 initial_pass
= get_migration_pass(who
);
219 pass
= get_migration_pass(who
);
220 } while (pass
== initial_pass
&& !got_stop
);
223 static void check_guests_ram(QTestState
*who
)
225 /* Our ASM test will have been incrementing one byte from each page from
226 * start_address to < end_address in order. This gives us a constraint
227 * that any page's byte should be equal or less than the previous pages
228 * byte (mod 256); and they should all be equal except for one transition
229 * at the point where we meet the incrementer. (We're running this with
230 * the guest stopped).
235 bool hit_edge
= false;
238 qtest_memread(who
, start_address
, &first_byte
, 1);
239 last_byte
= first_byte
;
241 for (address
= start_address
+ TEST_MEM_PAGE_SIZE
; address
< end_address
;
242 address
+= TEST_MEM_PAGE_SIZE
)
245 qtest_memread(who
, address
, &b
, 1);
246 if (b
!= last_byte
) {
247 if (((b
+ 1) % 256) == last_byte
&& !hit_edge
) {
248 /* This is OK, the guest stopped at the point of
249 * incrementing the previous page but didn't get
257 fprintf(stderr
, "Memory content inconsistency at %x"
258 " first_byte = %x last_byte = %x current = %x"
260 address
, first_byte
, last_byte
, b
, hit_edge
);
266 fprintf(stderr
, "and in another %d pages", bad
- 10);
271 static void cleanup(const char *filename
)
273 char *path
= g_strdup_printf("%s/%s", tmpfs
, filename
);
279 static char *SocketAddress_to_str(SocketAddress
*addr
)
281 switch (addr
->type
) {
282 case SOCKET_ADDRESS_TYPE_INET
:
283 return g_strdup_printf("tcp:%s:%s",
286 case SOCKET_ADDRESS_TYPE_UNIX
:
287 return g_strdup_printf("unix:%s",
288 addr
->u
.q_unix
.path
);
289 case SOCKET_ADDRESS_TYPE_FD
:
290 return g_strdup_printf("fd:%s", addr
->u
.fd
.str
);
291 case SOCKET_ADDRESS_TYPE_VSOCK
:
292 return g_strdup_printf("tcp:%s:%s",
296 return g_strdup("unknown address type");
300 static char *migrate_get_socket_address(QTestState
*who
, const char *parameter
)
304 Error
*local_err
= NULL
;
305 SocketAddressList
*addrs
;
309 rsp
= migrate_query(who
);
310 object
= qdict_get(rsp
, parameter
);
312 iv
= qobject_input_visitor_new(object
);
313 visit_type_SocketAddressList(iv
, NULL
, &addrs
, &local_err
);
316 /* we are only using a single address */
317 result
= SocketAddress_to_str(addrs
->value
);
319 qapi_free_SocketAddressList(addrs
);
324 static long long migrate_get_parameter_int(QTestState
*who
,
325 const char *parameter
)
330 rsp
= wait_command(who
, "{ 'execute': 'query-migrate-parameters' }");
331 result
= qdict_get_int(rsp
, parameter
);
336 static void migrate_check_parameter_int(QTestState
*who
, const char *parameter
,
341 result
= migrate_get_parameter_int(who
, parameter
);
342 g_assert_cmpint(result
, ==, value
);
345 static void migrate_set_parameter_int(QTestState
*who
, const char *parameter
,
351 "{ 'execute': 'migrate-set-parameters',"
352 "'arguments': { %s: %lld } }",
354 g_assert(qdict_haskey(rsp
, "return"));
356 migrate_check_parameter_int(who
, parameter
, value
);
359 static char *migrate_get_parameter_str(QTestState
*who
,
360 const char *parameter
)
365 rsp
= wait_command(who
, "{ 'execute': 'query-migrate-parameters' }");
366 result
= g_strdup(qdict_get_str(rsp
, parameter
));
371 static void migrate_check_parameter_str(QTestState
*who
, const char *parameter
,
376 result
= migrate_get_parameter_str(who
, parameter
);
377 g_assert_cmpstr(result
, ==, value
);
381 __attribute__((unused
))
382 static void migrate_set_parameter_str(QTestState
*who
, const char *parameter
,
388 "{ 'execute': 'migrate-set-parameters',"
389 "'arguments': { %s: %s } }",
391 g_assert(qdict_haskey(rsp
, "return"));
393 migrate_check_parameter_str(who
, parameter
, value
);
396 static void migrate_pause(QTestState
*who
)
400 rsp
= wait_command(who
, "{ 'execute': 'migrate-pause' }");
404 static void migrate_continue(QTestState
*who
, const char *state
)
408 rsp
= wait_command(who
,
409 "{ 'execute': 'migrate-continue',"
410 " 'arguments': { 'state': %s } }",
415 static void migrate_recover(QTestState
*who
, const char *uri
)
419 rsp
= wait_command(who
,
420 "{ 'execute': 'migrate-recover', "
421 " 'id': 'recover-cmd', "
422 " 'arguments': { 'uri': %s } }",
427 static void migrate_set_capability(QTestState
*who
, const char *capability
,
433 "{ 'execute': 'migrate-set-capabilities',"
435 "'capabilities': [ { "
436 "'capability': %s, 'state': %i } ] } }",
438 g_assert(qdict_haskey(rsp
, "return"));
442 static void migrate_postcopy_start(QTestState
*from
, QTestState
*to
)
446 rsp
= wait_command(from
, "{ 'execute': 'migrate-start-postcopy' }");
450 qtest_qmp_eventwait(from
, "STOP");
453 qtest_qmp_eventwait(to
, "RESUME");
463 static MigrateStart
*migrate_start_new(void)
465 MigrateStart
*args
= g_new0(MigrateStart
, 1);
467 args
->opts_source
= g_strdup("");
468 args
->opts_target
= g_strdup("");
472 static void migrate_start_destroy(MigrateStart
*args
)
474 g_free(args
->opts_source
);
475 g_free(args
->opts_target
);
479 static int test_migrate_start(QTestState
**from
, QTestState
**to
,
480 const char *uri
, MigrateStart
*args
)
482 gchar
*arch_source
, *arch_target
;
483 gchar
*cmd_source
, *cmd_target
;
484 const gchar
*ignore_stderr
;
485 char *bootpath
= NULL
;
488 const char *arch
= qtest_get_arch();
489 const char *machine_opts
= NULL
;
490 const char *memory_size
;
492 if (args
->use_shmem
) {
493 if (!g_file_test("/dev/shm", G_FILE_TEST_IS_DIR
)) {
494 g_test_skip("/dev/shm is not supported");
500 bootpath
= g_strdup_printf("%s/bootsect", tmpfs
);
501 if (strcmp(arch
, "i386") == 0 || strcmp(arch
, "x86_64") == 0) {
502 /* the assembled x86 boot sector should be exactly one sector large */
503 assert(sizeof(x86_bootsect
) == 512);
504 init_bootfile(bootpath
, x86_bootsect
, sizeof(x86_bootsect
));
505 memory_size
= "150M";
506 arch_source
= g_strdup_printf("-drive file=%s,format=raw", bootpath
);
507 arch_target
= g_strdup(arch_source
);
508 start_address
= X86_TEST_MEM_START
;
509 end_address
= X86_TEST_MEM_END
;
510 } else if (g_str_equal(arch
, "s390x")) {
511 init_bootfile(bootpath
, s390x_elf
, sizeof(s390x_elf
));
512 memory_size
= "128M";
513 arch_source
= g_strdup_printf("-bios %s", bootpath
);
514 arch_target
= g_strdup(arch_source
);
515 start_address
= S390_TEST_MEM_START
;
516 end_address
= S390_TEST_MEM_END
;
517 } else if (strcmp(arch
, "ppc64") == 0) {
518 machine_opts
= "vsmt=8";
519 memory_size
= "256M";
520 start_address
= PPC_TEST_MEM_START
;
521 end_address
= PPC_TEST_MEM_END
;
522 arch_source
= g_strdup_printf("-nodefaults "
523 "-prom-env 'use-nvramrc?=true' -prom-env "
524 "'nvramrc=hex .\" _\" begin %x %x "
525 "do i c@ 1 + i c! 1000 +loop .\" B\" 0 "
526 "until'", end_address
, start_address
);
527 arch_target
= g_strdup("");
528 } else if (strcmp(arch
, "aarch64") == 0) {
529 init_bootfile(bootpath
, aarch64_kernel
, sizeof(aarch64_kernel
));
530 machine_opts
= "virt,gic-version=max";
531 memory_size
= "150M";
532 arch_source
= g_strdup_printf("-cpu max "
535 arch_target
= g_strdup(arch_source
);
536 start_address
= ARM_TEST_MEM_START
;
537 end_address
= ARM_TEST_MEM_END
;
539 g_assert(sizeof(aarch64_kernel
) <= ARM_TEST_MAX_KERNEL_SIZE
);
541 g_assert_not_reached();
546 if (args
->hide_stderr
) {
547 ignore_stderr
= "2>/dev/null";
552 if (args
->use_shmem
) {
553 shmem_path
= g_strdup_printf("/dev/shm/qemu-%d", getpid());
554 shmem_opts
= g_strdup_printf(
555 "-object memory-backend-file,id=mem0,size=%s"
556 ",mem-path=%s,share=on -numa node,memdev=mem0",
557 memory_size
, shmem_path
);
560 shmem_opts
= g_strdup("");
563 cmd_source
= g_strdup_printf("-accel kvm -accel tcg%s%s "
564 "-name source,debug-threads=on "
566 "-serial file:%s/src_serial "
568 machine_opts
? " -machine " : "",
569 machine_opts
? machine_opts
: "",
571 arch_source
, shmem_opts
, args
->opts_source
,
574 *from
= qtest_init(cmd_source
);
577 cmd_target
= g_strdup_printf("-accel kvm -accel tcg%s%s "
578 "-name target,debug-threads=on "
580 "-serial file:%s/dest_serial "
583 machine_opts
? " -machine " : "",
584 machine_opts
? machine_opts
: "",
585 memory_size
, tmpfs
, uri
,
586 arch_target
, shmem_opts
,
587 args
->opts_target
, ignore_stderr
);
589 *to
= qtest_init(cmd_target
);
594 * Remove shmem file immediately to avoid memory leak in test failed case.
595 * It's valid becase QEMU has already opened this file
597 if (args
->use_shmem
) {
602 migrate_start_destroy(args
);
606 static void test_migrate_end(QTestState
*from
, QTestState
*to
, bool test_dest
)
608 unsigned char dest_byte_a
, dest_byte_b
, dest_byte_c
, dest_byte_d
;
613 qtest_memread(to
, start_address
, &dest_byte_a
, 1);
615 /* Destination still running, wait for a byte to change */
617 qtest_memread(to
, start_address
, &dest_byte_b
, 1);
619 } while (dest_byte_a
== dest_byte_b
);
621 qtest_qmp_discard_response(to
, "{ 'execute' : 'stop'}");
623 /* With it stopped, check nothing changes */
624 qtest_memread(to
, start_address
, &dest_byte_c
, 1);
626 qtest_memread(to
, start_address
, &dest_byte_d
, 1);
627 g_assert_cmpint(dest_byte_c
, ==, dest_byte_d
);
629 check_guests_ram(to
);
635 cleanup("migsocket");
636 cleanup("src_serial");
637 cleanup("dest_serial");
640 static void deprecated_set_downtime(QTestState
*who
, const double value
)
645 "{ 'execute': 'migrate_set_downtime',"
646 " 'arguments': { 'value': %f } }", value
);
647 g_assert(qdict_haskey(rsp
, "return"));
649 migrate_check_parameter_int(who
, "downtime-limit", value
* 1000);
652 static void deprecated_set_speed(QTestState
*who
, long long value
)
656 rsp
= qtest_qmp(who
, "{ 'execute': 'migrate_set_speed',"
657 "'arguments': { 'value': %lld } }", value
);
658 g_assert(qdict_haskey(rsp
, "return"));
660 migrate_check_parameter_int(who
, "max-bandwidth", value
);
663 static void deprecated_set_cache_size(QTestState
*who
, long long value
)
667 rsp
= qtest_qmp(who
, "{ 'execute': 'migrate-set-cache-size',"
668 "'arguments': { 'value': %lld } }", value
);
669 g_assert(qdict_haskey(rsp
, "return"));
671 migrate_check_parameter_int(who
, "xbzrle-cache-size", value
);
674 static void test_deprecated(void)
678 from
= qtest_init("-machine none");
680 deprecated_set_downtime(from
, 0.12345);
681 deprecated_set_speed(from
, 12345);
682 deprecated_set_cache_size(from
, 4096);
687 static int migrate_postcopy_prepare(QTestState
**from_ptr
,
691 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
692 QTestState
*from
, *to
;
694 if (test_migrate_start(&from
, &to
, uri
, args
)) {
698 migrate_set_capability(from
, "postcopy-ram", true);
699 migrate_set_capability(to
, "postcopy-ram", true);
700 migrate_set_capability(to
, "postcopy-blocktime", true);
702 /* We want to pick a speed slow enough that the test completes
703 * quickly, but that it doesn't complete precopy even on a slow
704 * machine, so also set the downtime.
706 migrate_set_parameter_int(from
, "max-bandwidth", 30000000);
707 migrate_set_parameter_int(from
, "downtime-limit", 1);
709 /* Wait for the first serial output from the source */
710 wait_for_serial("src_serial");
712 migrate_qmp(from
, uri
, "{}");
715 wait_for_migration_pass(from
);
723 static void migrate_postcopy_complete(QTestState
*from
, QTestState
*to
)
725 wait_for_migration_complete(from
);
727 /* Make sure we get at least one "B" on destination */
728 wait_for_serial("dest_serial");
730 if (uffd_feature_thread_id
) {
734 test_migrate_end(from
, to
, true);
737 static void test_postcopy(void)
739 MigrateStart
*args
= migrate_start_new();
740 QTestState
*from
, *to
;
742 if (migrate_postcopy_prepare(&from
, &to
, args
)) {
745 migrate_postcopy_start(from
, to
);
746 migrate_postcopy_complete(from
, to
);
749 static void test_postcopy_recovery(void)
751 MigrateStart
*args
= migrate_start_new();
752 QTestState
*from
, *to
;
755 args
->hide_stderr
= true;
757 if (migrate_postcopy_prepare(&from
, &to
, args
)) {
761 /* Turn postcopy speed down, 4K/s is slow enough on any machines */
762 migrate_set_parameter_int(from
, "max-postcopy-bandwidth", 4096);
764 /* Now we start the postcopy */
765 migrate_postcopy_start(from
, to
);
768 * Wait until postcopy is really started; we can only run the
769 * migrate-pause command during a postcopy
771 wait_for_migration_status(from
, "postcopy-active", NULL
);
774 * Manually stop the postcopy migration. This emulates a network
775 * failure with the migration socket
780 * Wait for destination side to reach postcopy-paused state. The
781 * migrate-recover command can only succeed if destination machine
782 * is in the paused state
784 wait_for_migration_status(to
, "postcopy-paused",
785 (const char * []) { "failed", "active",
786 "completed", NULL
});
789 * Create a new socket to emulate a new channel that is different
790 * from the broken migration channel; tell the destination to
791 * listen to the new port
793 uri
= g_strdup_printf("unix:%s/migsocket-recover", tmpfs
);
794 migrate_recover(to
, uri
);
797 * Try to rebuild the migration channel using the resume flag and
798 * the newly created channel
800 wait_for_migration_status(from
, "postcopy-paused",
801 (const char * []) { "failed", "active",
802 "completed", NULL
});
803 migrate_qmp(from
, uri
, "{'resume': true}");
806 /* Restore the postcopy bandwidth to unlimited */
807 migrate_set_parameter_int(from
, "max-postcopy-bandwidth", 0);
809 migrate_postcopy_complete(from
, to
);
812 static void test_baddest(void)
814 MigrateStart
*args
= migrate_start_new();
815 QTestState
*from
, *to
;
817 args
->hide_stderr
= true;
819 if (test_migrate_start(&from
, &to
, "tcp:0:0", args
)) {
822 migrate_qmp(from
, "tcp:0:0", "{}");
823 wait_for_migration_fail(from
, false);
824 test_migrate_end(from
, to
, false);
827 static void test_precopy_unix(void)
829 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
830 MigrateStart
*args
= migrate_start_new();
831 QTestState
*from
, *to
;
833 if (test_migrate_start(&from
, &to
, uri
, args
)) {
837 /* We want to pick a speed slow enough that the test completes
838 * quickly, but that it doesn't complete precopy even on a slow
839 * machine, so also set the downtime.
841 /* 1 ms should make it not converge*/
842 migrate_set_parameter_int(from
, "downtime-limit", 1);
844 migrate_set_parameter_int(from
, "max-bandwidth", 1000000000);
846 /* Wait for the first serial output from the source */
847 wait_for_serial("src_serial");
849 migrate_qmp(from
, uri
, "{}");
851 wait_for_migration_pass(from
);
853 /* 300 ms should converge */
854 migrate_set_parameter_int(from
, "downtime-limit", 300);
857 qtest_qmp_eventwait(from
, "STOP");
860 qtest_qmp_eventwait(to
, "RESUME");
862 wait_for_serial("dest_serial");
863 wait_for_migration_complete(from
);
865 test_migrate_end(from
, to
, true);
870 /* Currently upset on aarch64 TCG */
871 static void test_ignore_shared(void)
873 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
874 QTestState
*from
, *to
;
876 if (test_migrate_start(&from
, &to
, uri
, false, true, NULL
, NULL
)) {
880 migrate_set_capability(from
, "x-ignore-shared", true);
881 migrate_set_capability(to
, "x-ignore-shared", true);
883 /* Wait for the first serial output from the source */
884 wait_for_serial("src_serial");
886 migrate_qmp(from
, uri
, "{}");
888 wait_for_migration_pass(from
);
891 qtest_qmp_eventwait(from
, "STOP");
894 qtest_qmp_eventwait(to
, "RESUME");
896 wait_for_serial("dest_serial");
897 wait_for_migration_complete(from
);
899 /* Check whether shared RAM has been really skipped */
900 g_assert_cmpint(read_ram_property_int(from
, "transferred"), <, 1024 * 1024);
902 test_migrate_end(from
, to
, true);
907 static void test_xbzrle(const char *uri
)
909 MigrateStart
*args
= migrate_start_new();
910 QTestState
*from
, *to
;
912 if (test_migrate_start(&from
, &to
, uri
, args
)) {
917 * We want to pick a speed slow enough that the test completes
918 * quickly, but that it doesn't complete precopy even on a slow
919 * machine, so also set the downtime.
921 /* 1 ms should make it not converge*/
922 migrate_set_parameter_int(from
, "downtime-limit", 1);
924 migrate_set_parameter_int(from
, "max-bandwidth", 1000000000);
926 migrate_set_parameter_int(from
, "xbzrle-cache-size", 33554432);
928 migrate_set_capability(from
, "xbzrle", "true");
929 migrate_set_capability(to
, "xbzrle", "true");
930 /* Wait for the first serial output from the source */
931 wait_for_serial("src_serial");
933 migrate_qmp(from
, uri
, "{}");
935 wait_for_migration_pass(from
);
937 /* 300ms should converge */
938 migrate_set_parameter_int(from
, "downtime-limit", 300);
941 qtest_qmp_eventwait(from
, "STOP");
943 qtest_qmp_eventwait(to
, "RESUME");
945 wait_for_serial("dest_serial");
946 wait_for_migration_complete(from
);
948 test_migrate_end(from
, to
, true);
951 static void test_xbzrle_unix(void)
953 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
959 static void test_precopy_tcp(void)
961 MigrateStart
*args
= migrate_start_new();
963 QTestState
*from
, *to
;
965 if (test_migrate_start(&from
, &to
, "tcp:127.0.0.1:0", args
)) {
970 * We want to pick a speed slow enough that the test completes
971 * quickly, but that it doesn't complete precopy even on a slow
972 * machine, so also set the downtime.
974 /* 1 ms should make it not converge*/
975 migrate_set_parameter_int(from
, "downtime-limit", 1);
977 migrate_set_parameter_int(from
, "max-bandwidth", 1000000000);
979 /* Wait for the first serial output from the source */
980 wait_for_serial("src_serial");
982 uri
= migrate_get_socket_address(to
, "socket-address");
984 migrate_qmp(from
, uri
, "{}");
986 wait_for_migration_pass(from
);
988 /* 300ms should converge */
989 migrate_set_parameter_int(from
, "downtime-limit", 300);
992 qtest_qmp_eventwait(from
, "STOP");
994 qtest_qmp_eventwait(to
, "RESUME");
996 wait_for_serial("dest_serial");
997 wait_for_migration_complete(from
);
999 test_migrate_end(from
, to
, true);
1003 static void test_migrate_fd_proto(void)
1005 MigrateStart
*args
= migrate_start_new();
1006 QTestState
*from
, *to
;
1010 const char *error_desc
;
1012 if (test_migrate_start(&from
, &to
, "defer", args
)) {
1017 * We want to pick a speed slow enough that the test completes
1018 * quickly, but that it doesn't complete precopy even on a slow
1019 * machine, so also set the downtime.
1021 /* 1 ms should make it not converge */
1022 migrate_set_parameter_int(from
, "downtime-limit", 1);
1024 migrate_set_parameter_int(from
, "max-bandwidth", 1000000000);
1026 /* Wait for the first serial output from the source */
1027 wait_for_serial("src_serial");
1029 /* Create two connected sockets for migration */
1030 ret
= socketpair(PF_LOCAL
, SOCK_STREAM
, 0, pair
);
1031 g_assert_cmpint(ret
, ==, 0);
1033 /* Send the 1st socket to the target */
1034 rsp
= wait_command_fd(to
, pair
[0],
1035 "{ 'execute': 'getfd',"
1036 " 'arguments': { 'fdname': 'fd-mig' }}");
1040 /* Start incoming migration from the 1st socket */
1041 rsp
= wait_command(to
, "{ 'execute': 'migrate-incoming',"
1042 " 'arguments': { 'uri': 'fd:fd-mig' }}");
1045 /* Send the 2nd socket to the target */
1046 rsp
= wait_command_fd(from
, pair
[1],
1047 "{ 'execute': 'getfd',"
1048 " 'arguments': { 'fdname': 'fd-mig' }}");
1052 /* Start migration to the 2nd socket*/
1053 migrate_qmp(from
, "fd:fd-mig", "{}");
1055 wait_for_migration_pass(from
);
1057 /* 300ms should converge */
1058 migrate_set_parameter_int(from
, "downtime-limit", 300);
1061 qtest_qmp_eventwait(from
, "STOP");
1063 qtest_qmp_eventwait(to
, "RESUME");
1065 /* Test closing fds */
1066 /* We assume, that QEMU removes named fd from its list,
1067 * so this should fail */
1068 rsp
= qtest_qmp(from
, "{ 'execute': 'closefd',"
1069 " 'arguments': { 'fdname': 'fd-mig' }}");
1070 g_assert_true(qdict_haskey(rsp
, "error"));
1071 error_desc
= qdict_get_str(qdict_get_qdict(rsp
, "error"), "desc");
1072 g_assert_cmpstr(error_desc
, ==, "File descriptor named 'fd-mig' not found");
1075 rsp
= qtest_qmp(to
, "{ 'execute': 'closefd',"
1076 " 'arguments': { 'fdname': 'fd-mig' }}");
1077 g_assert_true(qdict_haskey(rsp
, "error"));
1078 error_desc
= qdict_get_str(qdict_get_qdict(rsp
, "error"), "desc");
1079 g_assert_cmpstr(error_desc
, ==, "File descriptor named 'fd-mig' not found");
1082 /* Complete migration */
1083 wait_for_serial("dest_serial");
1084 wait_for_migration_complete(from
);
1085 test_migrate_end(from
, to
, true);
1088 static void do_test_validate_uuid(MigrateStart
*args
, bool should_fail
)
1090 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
1091 QTestState
*from
, *to
;
1093 if (test_migrate_start(&from
, &to
, uri
, args
)) {
1098 * UUID validation is at the begin of migration. So, the main process of
1099 * migration is not interesting for us here. Thus, set huge downtime for
1100 * very fast migration.
1102 migrate_set_parameter_int(from
, "downtime-limit", 1000000);
1103 migrate_set_capability(from
, "validate-uuid", true);
1105 /* Wait for the first serial output from the source */
1106 wait_for_serial("src_serial");
1108 migrate_qmp(from
, uri
, "{}");
1111 qtest_set_expected_status(to
, 1);
1112 wait_for_migration_fail(from
, true);
1114 wait_for_migration_complete(from
);
1117 test_migrate_end(from
, to
, false);
1121 static void test_validate_uuid(void)
1123 MigrateStart
*args
= migrate_start_new();
1125 args
->opts_source
= g_strdup("-uuid 11111111-1111-1111-1111-111111111111");
1126 args
->opts_target
= g_strdup("-uuid 11111111-1111-1111-1111-111111111111");
1127 do_test_validate_uuid(args
, false);
1130 static void test_validate_uuid_error(void)
1132 MigrateStart
*args
= migrate_start_new();
1134 args
->opts_source
= g_strdup("-uuid 11111111-1111-1111-1111-111111111111");
1135 args
->opts_target
= g_strdup("-uuid 22222222-2222-2222-2222-222222222222");
1136 args
->hide_stderr
= true;
1137 do_test_validate_uuid(args
, true);
1140 static void test_validate_uuid_src_not_set(void)
1142 MigrateStart
*args
= migrate_start_new();
1144 args
->opts_target
= g_strdup("-uuid 22222222-2222-2222-2222-222222222222");
1145 args
->hide_stderr
= true;
1146 do_test_validate_uuid(args
, false);
1149 static void test_validate_uuid_dst_not_set(void)
1151 MigrateStart
*args
= migrate_start_new();
1153 args
->opts_source
= g_strdup("-uuid 11111111-1111-1111-1111-111111111111");
1154 args
->hide_stderr
= true;
1155 do_test_validate_uuid(args
, false);
1158 static void test_migrate_auto_converge(void)
1160 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
1161 MigrateStart
*args
= migrate_start_new();
1162 QTestState
*from
, *to
;
1163 int64_t remaining
, percentage
;
1166 * We want the test to be stable and as fast as possible.
1167 * E.g., with 1Gb/s bandwith migration may pass without throttling,
1168 * so we need to decrease a bandwidth.
1170 const int64_t init_pct
= 5, inc_pct
= 50, max_pct
= 95;
1171 const int64_t max_bandwidth
= 400000000; /* ~400Mb/s */
1172 const int64_t downtime_limit
= 250; /* 250ms */
1174 * We migrate through unix-socket (> 500Mb/s).
1175 * Thus, expected migration speed ~= bandwidth limit (< 500Mb/s).
1176 * So, we can predict expected_threshold
1178 const int64_t expected_threshold
= max_bandwidth
* downtime_limit
/ 1000;
1180 if (test_migrate_start(&from
, &to
, uri
, args
)) {
1184 migrate_set_capability(from
, "auto-converge", true);
1185 migrate_set_parameter_int(from
, "cpu-throttle-initial", init_pct
);
1186 migrate_set_parameter_int(from
, "cpu-throttle-increment", inc_pct
);
1187 migrate_set_parameter_int(from
, "max-cpu-throttle", max_pct
);
1190 * Set the initial parameters so that the migration could not converge
1191 * without throttling.
1193 migrate_set_parameter_int(from
, "downtime-limit", 1);
1194 migrate_set_parameter_int(from
, "max-bandwidth", 100000000); /* ~100Mb/s */
1196 /* To check remaining size after precopy */
1197 migrate_set_capability(from
, "pause-before-switchover", true);
1199 /* Wait for the first serial output from the source */
1200 wait_for_serial("src_serial");
1202 migrate_qmp(from
, uri
, "{}");
1204 /* Wait for throttling begins */
1206 while (percentage
== 0) {
1207 percentage
= read_migrate_property_int(from
, "cpu-throttle-percentage");
1209 g_assert_false(got_stop
);
1211 /* The first percentage of throttling should be equal to init_pct */
1212 g_assert_cmpint(percentage
, ==, init_pct
);
1213 /* Now, when we tested that throttling works, let it converge */
1214 migrate_set_parameter_int(from
, "downtime-limit", downtime_limit
);
1215 migrate_set_parameter_int(from
, "max-bandwidth", max_bandwidth
);
1218 * Wait for pre-switchover status to check last throttle percentage
1219 * and remaining. These values will be zeroed later
1221 wait_for_migration_status(from
, "pre-switchover", NULL
);
1223 /* The final percentage of throttling shouldn't be greater than max_pct */
1224 percentage
= read_migrate_property_int(from
, "cpu-throttle-percentage");
1225 g_assert_cmpint(percentage
, <=, max_pct
);
1227 remaining
= read_ram_property_int(from
, "remaining");
1228 g_assert_cmpint(remaining
, <, expected_threshold
);
1230 migrate_continue(from
, "pre-switchover");
1232 qtest_qmp_eventwait(to
, "RESUME");
1234 wait_for_serial("dest_serial");
1235 wait_for_migration_complete(from
);
1239 test_migrate_end(from
, to
, true);
1242 static void test_multifd_tcp(void)
1244 MigrateStart
*args
= migrate_start_new();
1245 QTestState
*from
, *to
;
1249 if (test_migrate_start(&from
, &to
, "defer", args
)) {
1254 * We want to pick a speed slow enough that the test completes
1255 * quickly, but that it doesn't complete precopy even on a slow
1256 * machine, so also set the downtime.
1258 /* 1 ms should make it not converge*/
1259 migrate_set_parameter_int(from
, "downtime-limit", 1);
1261 migrate_set_parameter_int(from
, "max-bandwidth", 1000000000);
1263 migrate_set_parameter_int(from
, "multifd-channels", 16);
1264 migrate_set_parameter_int(to
, "multifd-channels", 16);
1266 migrate_set_capability(from
, "multifd", "true");
1267 migrate_set_capability(to
, "multifd", "true");
1269 /* Start incoming migration from the 1st socket */
1270 rsp
= wait_command(to
, "{ 'execute': 'migrate-incoming',"
1271 " 'arguments': { 'uri': 'tcp:127.0.0.1:0' }}");
1274 /* Wait for the first serial output from the source */
1275 wait_for_serial("src_serial");
1277 uri
= migrate_get_socket_address(to
, "socket-address");
1279 migrate_qmp(from
, uri
, "{}");
1281 wait_for_migration_pass(from
);
1283 /* 300ms it should converge */
1284 migrate_set_parameter_int(from
, "downtime-limit", 300);
1287 qtest_qmp_eventwait(from
, "STOP");
1289 qtest_qmp_eventwait(to
, "RESUME");
1291 wait_for_serial("dest_serial");
1292 wait_for_migration_complete(from
);
1293 test_migrate_end(from
, to
, true);
1297 int main(int argc
, char **argv
)
1299 char template[] = "/tmp/migration-test-XXXXXX";
1302 g_test_init(&argc
, &argv
, NULL
);
1304 if (!ufd_version_check()) {
1305 return g_test_run();
1309 * On ppc64, the test only works with kvm-hv, but not with kvm-pr and TCG
1310 * is touchy due to race conditions on dirty bits (especially on PPC for
1313 if (g_str_equal(qtest_get_arch(), "ppc64") &&
1314 (access("/sys/module/kvm_hv", F_OK
) ||
1315 access("/dev/kvm", R_OK
| W_OK
))) {
1316 g_test_message("Skipping test: kvm_hv not available");
1317 return g_test_run();
1321 * Similar to ppc64, s390x seems to be touchy with TCG, so disable it
1322 * there until the problems are resolved
1324 if (g_str_equal(qtest_get_arch(), "s390x")) {
1325 #if defined(HOST_S390X)
1326 if (access("/dev/kvm", R_OK
| W_OK
)) {
1327 g_test_message("Skipping test: kvm not available");
1328 return g_test_run();
1331 g_test_message("Skipping test: Need s390x host to work properly");
1332 return g_test_run();
1336 tmpfs
= mkdtemp(template);
1338 g_test_message("mkdtemp on path (%s): %s", template, strerror(errno
));
1342 module_call_init(MODULE_INIT_QOM
);
1344 qtest_add_func("/migration/postcopy/unix", test_postcopy
);
1345 qtest_add_func("/migration/postcopy/recovery", test_postcopy_recovery
);
1346 qtest_add_func("/migration/deprecated", test_deprecated
);
1347 qtest_add_func("/migration/bad_dest", test_baddest
);
1348 qtest_add_func("/migration/precopy/unix", test_precopy_unix
);
1349 qtest_add_func("/migration/precopy/tcp", test_precopy_tcp
);
1350 /* qtest_add_func("/migration/ignore_shared", test_ignore_shared); */
1351 qtest_add_func("/migration/xbzrle/unix", test_xbzrle_unix
);
1352 qtest_add_func("/migration/fd_proto", test_migrate_fd_proto
);
1353 qtest_add_func("/migration/validate_uuid", test_validate_uuid
);
1354 qtest_add_func("/migration/validate_uuid_error", test_validate_uuid_error
);
1355 qtest_add_func("/migration/validate_uuid_src_not_set",
1356 test_validate_uuid_src_not_set
);
1357 qtest_add_func("/migration/validate_uuid_dst_not_set",
1358 test_validate_uuid_dst_not_set
);
1360 qtest_add_func("/migration/auto_converge", test_migrate_auto_converge
);
1361 qtest_add_func("/migration/multifd/tcp", test_multifd_tcp
);
1365 g_assert_cmpint(ret
, ==, 0);
1369 g_test_message("unable to rmdir: path (%s): %s",
1370 tmpfs
, strerror(errno
));