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 void migrate_pause(QTestState
*who
)
363 rsp
= wait_command(who
, "{ 'execute': 'migrate-pause' }");
367 static void migrate_continue(QTestState
*who
, const char *state
)
371 rsp
= wait_command(who
,
372 "{ 'execute': 'migrate-continue',"
373 " 'arguments': { 'state': %s } }",
378 static void migrate_recover(QTestState
*who
, const char *uri
)
382 rsp
= wait_command(who
,
383 "{ 'execute': 'migrate-recover', "
384 " 'id': 'recover-cmd', "
385 " 'arguments': { 'uri': %s } }",
390 static void migrate_set_capability(QTestState
*who
, const char *capability
,
396 "{ 'execute': 'migrate-set-capabilities',"
398 "'capabilities': [ { "
399 "'capability': %s, 'state': %i } ] } }",
401 g_assert(qdict_haskey(rsp
, "return"));
405 static void migrate_postcopy_start(QTestState
*from
, QTestState
*to
)
409 rsp
= wait_command(from
, "{ 'execute': 'migrate-start-postcopy' }");
413 qtest_qmp_eventwait(from
, "STOP");
416 qtest_qmp_eventwait(to
, "RESUME");
426 static MigrateStart
*migrate_start_new(void)
428 MigrateStart
*args
= g_new0(MigrateStart
, 1);
430 args
->opts_source
= g_strdup("");
431 args
->opts_target
= g_strdup("");
435 static void migrate_start_destroy(MigrateStart
*args
)
437 g_free(args
->opts_source
);
438 g_free(args
->opts_target
);
442 static int test_migrate_start(QTestState
**from
, QTestState
**to
,
443 const char *uri
, MigrateStart
*args
)
445 gchar
*arch_source
, *arch_target
;
446 gchar
*cmd_source
, *cmd_target
;
447 const gchar
*ignore_stderr
;
448 char *bootpath
= NULL
;
451 const char *arch
= qtest_get_arch();
452 const char *machine_opts
= NULL
;
453 const char *memory_size
;
455 if (args
->use_shmem
) {
456 if (!g_file_test("/dev/shm", G_FILE_TEST_IS_DIR
)) {
457 g_test_skip("/dev/shm is not supported");
463 bootpath
= g_strdup_printf("%s/bootsect", tmpfs
);
464 if (strcmp(arch
, "i386") == 0 || strcmp(arch
, "x86_64") == 0) {
465 /* the assembled x86 boot sector should be exactly one sector large */
466 assert(sizeof(x86_bootsect
) == 512);
467 init_bootfile(bootpath
, x86_bootsect
, sizeof(x86_bootsect
));
468 memory_size
= "150M";
469 arch_source
= g_strdup_printf("-drive file=%s,format=raw", bootpath
);
470 arch_target
= g_strdup(arch_source
);
471 start_address
= X86_TEST_MEM_START
;
472 end_address
= X86_TEST_MEM_END
;
473 } else if (g_str_equal(arch
, "s390x")) {
474 init_bootfile(bootpath
, s390x_elf
, sizeof(s390x_elf
));
475 memory_size
= "128M";
476 arch_source
= g_strdup_printf("-bios %s", bootpath
);
477 arch_target
= g_strdup(arch_source
);
478 start_address
= S390_TEST_MEM_START
;
479 end_address
= S390_TEST_MEM_END
;
480 } else if (strcmp(arch
, "ppc64") == 0) {
481 machine_opts
= "vsmt=8";
482 memory_size
= "256M";
483 arch_source
= g_strdup_printf("-nodefaults "
484 "-prom-env 'use-nvramrc?=true' -prom-env "
485 "'nvramrc=hex .\" _\" begin %x %x "
486 "do i c@ 1 + i c! 1000 +loop .\" B\" 0 "
487 "until'", end_address
, start_address
);
488 arch_target
= g_strdup("");
489 start_address
= PPC_TEST_MEM_START
;
490 end_address
= PPC_TEST_MEM_END
;
491 } else if (strcmp(arch
, "aarch64") == 0) {
492 init_bootfile(bootpath
, aarch64_kernel
, sizeof(aarch64_kernel
));
493 machine_opts
= "virt,gic-version=max";
494 memory_size
= "150M";
495 arch_source
= g_strdup_printf("-cpu max "
498 arch_target
= g_strdup(arch_source
);
499 start_address
= ARM_TEST_MEM_START
;
500 end_address
= ARM_TEST_MEM_END
;
502 g_assert(sizeof(aarch64_kernel
) <= ARM_TEST_MAX_KERNEL_SIZE
);
504 g_assert_not_reached();
509 if (args
->hide_stderr
) {
510 ignore_stderr
= "2>/dev/null";
515 if (args
->use_shmem
) {
516 shmem_path
= g_strdup_printf("/dev/shm/qemu-%d", getpid());
517 shmem_opts
= g_strdup_printf(
518 "-object memory-backend-file,id=mem0,size=%s"
519 ",mem-path=%s,share=on -numa node,memdev=mem0",
520 memory_size
, shmem_path
);
523 shmem_opts
= g_strdup("");
526 cmd_source
= g_strdup_printf("-accel kvm -accel tcg%s%s "
527 "-name source,debug-threads=on "
529 "-serial file:%s/src_serial "
531 machine_opts
? " -machine " : "",
532 machine_opts
? machine_opts
: "",
534 arch_source
, shmem_opts
, args
->opts_source
,
537 *from
= qtest_init(cmd_source
);
540 cmd_target
= g_strdup_printf("-accel kvm -accel tcg%s%s "
541 "-name target,debug-threads=on "
543 "-serial file:%s/dest_serial "
546 machine_opts
? " -machine " : "",
547 machine_opts
? machine_opts
: "",
548 memory_size
, tmpfs
, uri
,
549 arch_target
, shmem_opts
,
550 args
->opts_target
, ignore_stderr
);
552 *to
= qtest_init(cmd_target
);
557 * Remove shmem file immediately to avoid memory leak in test failed case.
558 * It's valid becase QEMU has already opened this file
560 if (args
->use_shmem
) {
565 migrate_start_destroy(args
);
569 static void test_migrate_end(QTestState
*from
, QTestState
*to
, bool test_dest
)
571 unsigned char dest_byte_a
, dest_byte_b
, dest_byte_c
, dest_byte_d
;
576 qtest_memread(to
, start_address
, &dest_byte_a
, 1);
578 /* Destination still running, wait for a byte to change */
580 qtest_memread(to
, start_address
, &dest_byte_b
, 1);
582 } while (dest_byte_a
== dest_byte_b
);
584 qtest_qmp_discard_response(to
, "{ 'execute' : 'stop'}");
586 /* With it stopped, check nothing changes */
587 qtest_memread(to
, start_address
, &dest_byte_c
, 1);
589 qtest_memread(to
, start_address
, &dest_byte_d
, 1);
590 g_assert_cmpint(dest_byte_c
, ==, dest_byte_d
);
592 check_guests_ram(to
);
598 cleanup("migsocket");
599 cleanup("src_serial");
600 cleanup("dest_serial");
603 static void deprecated_set_downtime(QTestState
*who
, const double value
)
608 "{ 'execute': 'migrate_set_downtime',"
609 " 'arguments': { 'value': %f } }", value
);
610 g_assert(qdict_haskey(rsp
, "return"));
612 migrate_check_parameter_int(who
, "downtime-limit", value
* 1000);
615 static void deprecated_set_speed(QTestState
*who
, long long value
)
619 rsp
= qtest_qmp(who
, "{ 'execute': 'migrate_set_speed',"
620 "'arguments': { 'value': %lld } }", value
);
621 g_assert(qdict_haskey(rsp
, "return"));
623 migrate_check_parameter_int(who
, "max-bandwidth", value
);
626 static void deprecated_set_cache_size(QTestState
*who
, long long value
)
630 rsp
= qtest_qmp(who
, "{ 'execute': 'migrate-set-cache-size',"
631 "'arguments': { 'value': %lld } }", value
);
632 g_assert(qdict_haskey(rsp
, "return"));
634 migrate_check_parameter_int(who
, "xbzrle-cache-size", value
);
637 static void test_deprecated(void)
641 from
= qtest_init("-machine none");
643 deprecated_set_downtime(from
, 0.12345);
644 deprecated_set_speed(from
, 12345);
645 deprecated_set_cache_size(from
, 4096);
650 static int migrate_postcopy_prepare(QTestState
**from_ptr
,
654 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
655 QTestState
*from
, *to
;
657 if (test_migrate_start(&from
, &to
, uri
, args
)) {
661 migrate_set_capability(from
, "postcopy-ram", true);
662 migrate_set_capability(to
, "postcopy-ram", true);
663 migrate_set_capability(to
, "postcopy-blocktime", true);
665 /* We want to pick a speed slow enough that the test completes
666 * quickly, but that it doesn't complete precopy even on a slow
667 * machine, so also set the downtime.
669 migrate_set_parameter_int(from
, "max-bandwidth", 30000000);
670 migrate_set_parameter_int(from
, "downtime-limit", 1);
672 /* Wait for the first serial output from the source */
673 wait_for_serial("src_serial");
675 migrate_qmp(from
, uri
, "{}");
678 wait_for_migration_pass(from
);
686 static void migrate_postcopy_complete(QTestState
*from
, QTestState
*to
)
688 wait_for_migration_complete(from
);
690 /* Make sure we get at least one "B" on destination */
691 wait_for_serial("dest_serial");
693 if (uffd_feature_thread_id
) {
697 test_migrate_end(from
, to
, true);
700 static void test_postcopy(void)
702 MigrateStart
*args
= migrate_start_new();
703 QTestState
*from
, *to
;
705 if (migrate_postcopy_prepare(&from
, &to
, args
)) {
708 migrate_postcopy_start(from
, to
);
709 migrate_postcopy_complete(from
, to
);
712 static void test_postcopy_recovery(void)
714 MigrateStart
*args
= migrate_start_new();
715 QTestState
*from
, *to
;
718 args
->hide_stderr
= true;
720 if (migrate_postcopy_prepare(&from
, &to
, args
)) {
724 /* Turn postcopy speed down, 4K/s is slow enough on any machines */
725 migrate_set_parameter_int(from
, "max-postcopy-bandwidth", 4096);
727 /* Now we start the postcopy */
728 migrate_postcopy_start(from
, to
);
731 * Wait until postcopy is really started; we can only run the
732 * migrate-pause command during a postcopy
734 wait_for_migration_status(from
, "postcopy-active", NULL
);
737 * Manually stop the postcopy migration. This emulates a network
738 * failure with the migration socket
743 * Wait for destination side to reach postcopy-paused state. The
744 * migrate-recover command can only succeed if destination machine
745 * is in the paused state
747 wait_for_migration_status(to
, "postcopy-paused",
748 (const char * []) { "failed", "active",
749 "completed", NULL
});
752 * Create a new socket to emulate a new channel that is different
753 * from the broken migration channel; tell the destination to
754 * listen to the new port
756 uri
= g_strdup_printf("unix:%s/migsocket-recover", tmpfs
);
757 migrate_recover(to
, uri
);
760 * Try to rebuild the migration channel using the resume flag and
761 * the newly created channel
763 wait_for_migration_status(from
, "postcopy-paused",
764 (const char * []) { "failed", "active",
765 "completed", NULL
});
766 migrate_qmp(from
, uri
, "{'resume': true}");
769 /* Restore the postcopy bandwidth to unlimited */
770 migrate_set_parameter_int(from
, "max-postcopy-bandwidth", 0);
772 migrate_postcopy_complete(from
, to
);
775 static void test_baddest(void)
777 MigrateStart
*args
= migrate_start_new();
778 QTestState
*from
, *to
;
780 args
->hide_stderr
= true;
782 if (test_migrate_start(&from
, &to
, "tcp:0:0", args
)) {
785 migrate_qmp(from
, "tcp:0:0", "{}");
786 wait_for_migration_fail(from
, false);
787 test_migrate_end(from
, to
, false);
790 static void test_precopy_unix(void)
792 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
793 MigrateStart
*args
= migrate_start_new();
794 QTestState
*from
, *to
;
796 if (test_migrate_start(&from
, &to
, uri
, args
)) {
800 /* We want to pick a speed slow enough that the test completes
801 * quickly, but that it doesn't complete precopy even on a slow
802 * machine, so also set the downtime.
804 /* 1 ms should make it not converge*/
805 migrate_set_parameter_int(from
, "downtime-limit", 1);
807 migrate_set_parameter_int(from
, "max-bandwidth", 1000000000);
809 /* Wait for the first serial output from the source */
810 wait_for_serial("src_serial");
812 migrate_qmp(from
, uri
, "{}");
814 wait_for_migration_pass(from
);
816 /* 300 ms should converge */
817 migrate_set_parameter_int(from
, "downtime-limit", 300);
820 qtest_qmp_eventwait(from
, "STOP");
823 qtest_qmp_eventwait(to
, "RESUME");
825 wait_for_serial("dest_serial");
826 wait_for_migration_complete(from
);
828 test_migrate_end(from
, to
, true);
833 /* Currently upset on aarch64 TCG */
834 static void test_ignore_shared(void)
836 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
837 QTestState
*from
, *to
;
839 if (test_migrate_start(&from
, &to
, uri
, false, true, NULL
, NULL
)) {
843 migrate_set_capability(from
, "x-ignore-shared", true);
844 migrate_set_capability(to
, "x-ignore-shared", true);
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
);
854 qtest_qmp_eventwait(from
, "STOP");
857 qtest_qmp_eventwait(to
, "RESUME");
859 wait_for_serial("dest_serial");
860 wait_for_migration_complete(from
);
862 /* Check whether shared RAM has been really skipped */
863 g_assert_cmpint(read_ram_property_int(from
, "transferred"), <, 1024 * 1024);
865 test_migrate_end(from
, to
, true);
870 static void test_xbzrle(const char *uri
)
872 MigrateStart
*args
= migrate_start_new();
873 QTestState
*from
, *to
;
875 if (test_migrate_start(&from
, &to
, uri
, args
)) {
880 * We want to pick a speed slow enough that the test completes
881 * quickly, but that it doesn't complete precopy even on a slow
882 * machine, so also set the downtime.
884 /* 1 ms should make it not converge*/
885 migrate_set_parameter_int(from
, "downtime-limit", 1);
887 migrate_set_parameter_int(from
, "max-bandwidth", 1000000000);
889 migrate_set_parameter_int(from
, "xbzrle-cache-size", 33554432);
891 migrate_set_capability(from
, "xbzrle", "true");
892 migrate_set_capability(to
, "xbzrle", "true");
893 /* Wait for the first serial output from the source */
894 wait_for_serial("src_serial");
896 migrate_qmp(from
, uri
, "{}");
898 wait_for_migration_pass(from
);
900 /* 300ms should converge */
901 migrate_set_parameter_int(from
, "downtime-limit", 300);
904 qtest_qmp_eventwait(from
, "STOP");
906 qtest_qmp_eventwait(to
, "RESUME");
908 wait_for_serial("dest_serial");
909 wait_for_migration_complete(from
);
911 test_migrate_end(from
, to
, true);
914 static void test_xbzrle_unix(void)
916 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
922 static void test_precopy_tcp(void)
924 MigrateStart
*args
= migrate_start_new();
926 QTestState
*from
, *to
;
928 if (test_migrate_start(&from
, &to
, "tcp:127.0.0.1:0", args
)) {
933 * We want to pick a speed slow enough that the test completes
934 * quickly, but that it doesn't complete precopy even on a slow
935 * machine, so also set the downtime.
937 /* 1 ms should make it not converge*/
938 migrate_set_parameter_int(from
, "downtime-limit", 1);
940 migrate_set_parameter_int(from
, "max-bandwidth", 1000000000);
942 /* Wait for the first serial output from the source */
943 wait_for_serial("src_serial");
945 uri
= migrate_get_socket_address(to
, "socket-address");
947 migrate_qmp(from
, uri
, "{}");
949 wait_for_migration_pass(from
);
951 /* 300ms should converge */
952 migrate_set_parameter_int(from
, "downtime-limit", 300);
955 qtest_qmp_eventwait(from
, "STOP");
957 qtest_qmp_eventwait(to
, "RESUME");
959 wait_for_serial("dest_serial");
960 wait_for_migration_complete(from
);
962 test_migrate_end(from
, to
, true);
966 static void test_migrate_fd_proto(void)
968 MigrateStart
*args
= migrate_start_new();
969 QTestState
*from
, *to
;
973 const char *error_desc
;
975 if (test_migrate_start(&from
, &to
, "defer", args
)) {
980 * We want to pick a speed slow enough that the test completes
981 * quickly, but that it doesn't complete precopy even on a slow
982 * machine, so also set the downtime.
984 /* 1 ms should make it not converge */
985 migrate_set_parameter_int(from
, "downtime-limit", 1);
987 migrate_set_parameter_int(from
, "max-bandwidth", 1000000000);
989 /* Wait for the first serial output from the source */
990 wait_for_serial("src_serial");
992 /* Create two connected sockets for migration */
993 ret
= socketpair(PF_LOCAL
, SOCK_STREAM
, 0, pair
);
994 g_assert_cmpint(ret
, ==, 0);
996 /* Send the 1st socket to the target */
997 rsp
= wait_command_fd(to
, pair
[0],
998 "{ 'execute': 'getfd',"
999 " 'arguments': { 'fdname': 'fd-mig' }}");
1003 /* Start incoming migration from the 1st socket */
1004 rsp
= wait_command(to
, "{ 'execute': 'migrate-incoming',"
1005 " 'arguments': { 'uri': 'fd:fd-mig' }}");
1008 /* Send the 2nd socket to the target */
1009 rsp
= wait_command_fd(from
, pair
[1],
1010 "{ 'execute': 'getfd',"
1011 " 'arguments': { 'fdname': 'fd-mig' }}");
1015 /* Start migration to the 2nd socket*/
1016 migrate_qmp(from
, "fd:fd-mig", "{}");
1018 wait_for_migration_pass(from
);
1020 /* 300ms should converge */
1021 migrate_set_parameter_int(from
, "downtime-limit", 300);
1024 qtest_qmp_eventwait(from
, "STOP");
1026 qtest_qmp_eventwait(to
, "RESUME");
1028 /* Test closing fds */
1029 /* We assume, that QEMU removes named fd from its list,
1030 * so this should fail */
1031 rsp
= qtest_qmp(from
, "{ 'execute': 'closefd',"
1032 " 'arguments': { 'fdname': 'fd-mig' }}");
1033 g_assert_true(qdict_haskey(rsp
, "error"));
1034 error_desc
= qdict_get_str(qdict_get_qdict(rsp
, "error"), "desc");
1035 g_assert_cmpstr(error_desc
, ==, "File descriptor named 'fd-mig' not found");
1038 rsp
= qtest_qmp(to
, "{ 'execute': 'closefd',"
1039 " 'arguments': { 'fdname': 'fd-mig' }}");
1040 g_assert_true(qdict_haskey(rsp
, "error"));
1041 error_desc
= qdict_get_str(qdict_get_qdict(rsp
, "error"), "desc");
1042 g_assert_cmpstr(error_desc
, ==, "File descriptor named 'fd-mig' not found");
1045 /* Complete migration */
1046 wait_for_serial("dest_serial");
1047 wait_for_migration_complete(from
);
1048 test_migrate_end(from
, to
, true);
1051 static void do_test_validate_uuid(MigrateStart
*args
, bool should_fail
)
1053 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
1054 QTestState
*from
, *to
;
1056 if (test_migrate_start(&from
, &to
, uri
, args
)) {
1061 * UUID validation is at the begin of migration. So, the main process of
1062 * migration is not interesting for us here. Thus, set huge downtime for
1063 * very fast migration.
1065 migrate_set_parameter_int(from
, "downtime-limit", 1000000);
1066 migrate_set_capability(from
, "validate-uuid", true);
1068 /* Wait for the first serial output from the source */
1069 wait_for_serial("src_serial");
1071 migrate_qmp(from
, uri
, "{}");
1074 qtest_set_expected_status(to
, 1);
1075 wait_for_migration_fail(from
, true);
1077 wait_for_migration_complete(from
);
1080 test_migrate_end(from
, to
, false);
1084 static void test_validate_uuid(void)
1086 MigrateStart
*args
= migrate_start_new();
1088 args
->opts_source
= g_strdup("-uuid 11111111-1111-1111-1111-111111111111");
1089 args
->opts_target
= g_strdup("-uuid 11111111-1111-1111-1111-111111111111");
1090 do_test_validate_uuid(args
, false);
1093 static void test_validate_uuid_error(void)
1095 MigrateStart
*args
= migrate_start_new();
1097 args
->opts_source
= g_strdup("-uuid 11111111-1111-1111-1111-111111111111");
1098 args
->opts_target
= g_strdup("-uuid 22222222-2222-2222-2222-222222222222");
1099 args
->hide_stderr
= true;
1100 do_test_validate_uuid(args
, true);
1103 static void test_validate_uuid_src_not_set(void)
1105 MigrateStart
*args
= migrate_start_new();
1107 args
->opts_target
= g_strdup("-uuid 22222222-2222-2222-2222-222222222222");
1108 args
->hide_stderr
= true;
1109 do_test_validate_uuid(args
, false);
1112 static void test_validate_uuid_dst_not_set(void)
1114 MigrateStart
*args
= migrate_start_new();
1116 args
->opts_source
= g_strdup("-uuid 11111111-1111-1111-1111-111111111111");
1117 args
->hide_stderr
= true;
1118 do_test_validate_uuid(args
, false);
1121 static void test_migrate_auto_converge(void)
1123 char *uri
= g_strdup_printf("unix:%s/migsocket", tmpfs
);
1124 MigrateStart
*args
= migrate_start_new();
1125 QTestState
*from
, *to
;
1126 int64_t remaining
, percentage
;
1129 * We want the test to be stable and as fast as possible.
1130 * E.g., with 1Gb/s bandwith migration may pass without throttling,
1131 * so we need to decrease a bandwidth.
1133 const int64_t init_pct
= 5, inc_pct
= 50, max_pct
= 95;
1134 const int64_t max_bandwidth
= 400000000; /* ~400Mb/s */
1135 const int64_t downtime_limit
= 250; /* 250ms */
1137 * We migrate through unix-socket (> 500Mb/s).
1138 * Thus, expected migration speed ~= bandwidth limit (< 500Mb/s).
1139 * So, we can predict expected_threshold
1141 const int64_t expected_threshold
= max_bandwidth
* downtime_limit
/ 1000;
1143 if (test_migrate_start(&from
, &to
, uri
, args
)) {
1147 migrate_set_capability(from
, "auto-converge", true);
1148 migrate_set_parameter_int(from
, "cpu-throttle-initial", init_pct
);
1149 migrate_set_parameter_int(from
, "cpu-throttle-increment", inc_pct
);
1150 migrate_set_parameter_int(from
, "max-cpu-throttle", max_pct
);
1153 * Set the initial parameters so that the migration could not converge
1154 * without throttling.
1156 migrate_set_parameter_int(from
, "downtime-limit", 1);
1157 migrate_set_parameter_int(from
, "max-bandwidth", 100000000); /* ~100Mb/s */
1159 /* To check remaining size after precopy */
1160 migrate_set_capability(from
, "pause-before-switchover", true);
1162 /* Wait for the first serial output from the source */
1163 wait_for_serial("src_serial");
1165 migrate_qmp(from
, uri
, "{}");
1167 /* Wait for throttling begins */
1169 while (percentage
== 0) {
1170 percentage
= read_migrate_property_int(from
, "cpu-throttle-percentage");
1172 g_assert_false(got_stop
);
1174 /* The first percentage of throttling should be equal to init_pct */
1175 g_assert_cmpint(percentage
, ==, init_pct
);
1176 /* Now, when we tested that throttling works, let it converge */
1177 migrate_set_parameter_int(from
, "downtime-limit", downtime_limit
);
1178 migrate_set_parameter_int(from
, "max-bandwidth", max_bandwidth
);
1181 * Wait for pre-switchover status to check last throttle percentage
1182 * and remaining. These values will be zeroed later
1184 wait_for_migration_status(from
, "pre-switchover", NULL
);
1186 /* The final percentage of throttling shouldn't be greater than max_pct */
1187 percentage
= read_migrate_property_int(from
, "cpu-throttle-percentage");
1188 g_assert_cmpint(percentage
, <=, max_pct
);
1190 remaining
= read_ram_property_int(from
, "remaining");
1191 g_assert_cmpint(remaining
, <, expected_threshold
);
1193 migrate_continue(from
, "pre-switchover");
1195 qtest_qmp_eventwait(to
, "RESUME");
1197 wait_for_serial("dest_serial");
1198 wait_for_migration_complete(from
);
1202 test_migrate_end(from
, to
, true);
1205 int main(int argc
, char **argv
)
1207 char template[] = "/tmp/migration-test-XXXXXX";
1210 g_test_init(&argc
, &argv
, NULL
);
1212 if (!ufd_version_check()) {
1213 return g_test_run();
1217 * On ppc64, the test only works with kvm-hv, but not with kvm-pr and TCG
1218 * is touchy due to race conditions on dirty bits (especially on PPC for
1221 if (g_str_equal(qtest_get_arch(), "ppc64") &&
1222 (access("/sys/module/kvm_hv", F_OK
) ||
1223 access("/dev/kvm", R_OK
| W_OK
))) {
1224 g_test_message("Skipping test: kvm_hv not available");
1225 return g_test_run();
1229 * Similar to ppc64, s390x seems to be touchy with TCG, so disable it
1230 * there until the problems are resolved
1232 if (g_str_equal(qtest_get_arch(), "s390x")) {
1233 #if defined(HOST_S390X)
1234 if (access("/dev/kvm", R_OK
| W_OK
)) {
1235 g_test_message("Skipping test: kvm not available");
1236 return g_test_run();
1239 g_test_message("Skipping test: Need s390x host to work properly");
1240 return g_test_run();
1244 tmpfs
= mkdtemp(template);
1246 g_test_message("mkdtemp on path (%s): %s", template, strerror(errno
));
1250 module_call_init(MODULE_INIT_QOM
);
1252 qtest_add_func("/migration/postcopy/unix", test_postcopy
);
1253 qtest_add_func("/migration/postcopy/recovery", test_postcopy_recovery
);
1254 qtest_add_func("/migration/deprecated", test_deprecated
);
1255 qtest_add_func("/migration/bad_dest", test_baddest
);
1256 qtest_add_func("/migration/precopy/unix", test_precopy_unix
);
1257 qtest_add_func("/migration/precopy/tcp", test_precopy_tcp
);
1258 /* qtest_add_func("/migration/ignore_shared", test_ignore_shared); */
1259 qtest_add_func("/migration/xbzrle/unix", test_xbzrle_unix
);
1260 qtest_add_func("/migration/fd_proto", test_migrate_fd_proto
);
1261 qtest_add_func("/migration/validate_uuid", test_validate_uuid
);
1262 qtest_add_func("/migration/validate_uuid_error", test_validate_uuid_error
);
1263 qtest_add_func("/migration/validate_uuid_src_not_set",
1264 test_validate_uuid_src_not_set
);
1265 qtest_add_func("/migration/validate_uuid_dst_not_set",
1266 test_validate_uuid_dst_not_set
);
1268 qtest_add_func("/migration/auto_converge", test_migrate_auto_converge
);
1272 g_assert_cmpint(ret
, ==, 0);
1276 g_test_message("unable to rmdir: path (%s): %s",
1277 tmpfs
, strerror(errno
));