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b3110466 CX |
1 | /* |
2 | * Block replication tests | |
3 | * | |
4 | * Copyright (c) 2016 FUJITSU LIMITED | |
5 | * Author: Changlong Xie <xiecl.fnst@cn.fujitsu.com> | |
6 | * | |
7 | * This work is licensed under the terms of the GNU GPL, version 2 or | |
8 | * later. See the COPYING file in the top-level directory. | |
9 | */ | |
10 | ||
11 | #include "qemu/osdep.h" | |
12 | ||
13 | #include "qapi/error.h" | |
14 | #include "replication.h" | |
15 | #include "block/block_int.h" | |
16 | #include "sysemu/block-backend.h" | |
17 | ||
18 | #define IMG_SIZE (64 * 1024 * 1024) | |
19 | ||
20 | /* primary */ | |
21 | #define P_ID "primary-id" | |
22 | static char p_local_disk[] = "/tmp/p_local_disk.XXXXXX"; | |
23 | ||
24 | /* secondary */ | |
25 | #define S_ID "secondary-id" | |
26 | #define S_LOCAL_DISK_ID "secondary-local-disk-id" | |
27 | static char s_local_disk[] = "/tmp/s_local_disk.XXXXXX"; | |
28 | static char s_active_disk[] = "/tmp/s_active_disk.XXXXXX"; | |
29 | static char s_hidden_disk[] = "/tmp/s_hidden_disk.XXXXXX"; | |
30 | ||
31 | /* FIXME: steal from blockdev.c */ | |
32 | QemuOptsList qemu_drive_opts = { | |
33 | .name = "drive", | |
34 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
35 | .desc = { | |
36 | { /* end of list */ } | |
37 | }, | |
38 | }; | |
39 | ||
40 | #define NOT_DONE 0x7fffffff | |
41 | ||
42 | static void blk_rw_done(void *opaque, int ret) | |
43 | { | |
44 | *(int *)opaque = ret; | |
45 | } | |
46 | ||
47 | static void test_blk_read(BlockBackend *blk, long pattern, | |
48 | int64_t pattern_offset, int64_t pattern_count, | |
49 | int64_t offset, int64_t count, | |
50 | bool expect_failed) | |
51 | { | |
52 | void *pattern_buf = NULL; | |
53 | QEMUIOVector qiov; | |
54 | void *cmp_buf = NULL; | |
55 | int async_ret = NOT_DONE; | |
56 | ||
57 | if (pattern) { | |
58 | cmp_buf = g_malloc(pattern_count); | |
59 | memset(cmp_buf, pattern, pattern_count); | |
60 | } | |
61 | ||
62 | pattern_buf = g_malloc(count); | |
63 | if (pattern) { | |
64 | memset(pattern_buf, pattern, count); | |
65 | } else { | |
66 | memset(pattern_buf, 0x00, count); | |
67 | } | |
68 | ||
69 | qemu_iovec_init(&qiov, 1); | |
70 | qemu_iovec_add(&qiov, pattern_buf, count); | |
71 | ||
72 | blk_aio_preadv(blk, offset, &qiov, 0, blk_rw_done, &async_ret); | |
73 | while (async_ret == NOT_DONE) { | |
74 | main_loop_wait(false); | |
75 | } | |
76 | ||
77 | if (expect_failed) { | |
78 | g_assert(async_ret != 0); | |
79 | } else { | |
80 | g_assert(async_ret == 0); | |
81 | if (pattern) { | |
82 | g_assert(memcmp(pattern_buf + pattern_offset, | |
83 | cmp_buf, pattern_count) <= 0); | |
84 | } | |
85 | } | |
86 | ||
87 | g_free(pattern_buf); | |
88 | } | |
89 | ||
90 | static void test_blk_write(BlockBackend *blk, long pattern, int64_t offset, | |
91 | int64_t count, bool expect_failed) | |
92 | { | |
93 | void *pattern_buf = NULL; | |
94 | QEMUIOVector qiov; | |
95 | int async_ret = NOT_DONE; | |
96 | ||
97 | pattern_buf = g_malloc(count); | |
98 | if (pattern) { | |
99 | memset(pattern_buf, pattern, count); | |
100 | } else { | |
101 | memset(pattern_buf, 0x00, count); | |
102 | } | |
103 | ||
104 | qemu_iovec_init(&qiov, 1); | |
105 | qemu_iovec_add(&qiov, pattern_buf, count); | |
106 | ||
107 | blk_aio_pwritev(blk, offset, &qiov, 0, blk_rw_done, &async_ret); | |
108 | while (async_ret == NOT_DONE) { | |
109 | main_loop_wait(false); | |
110 | } | |
111 | ||
112 | if (expect_failed) { | |
113 | g_assert(async_ret != 0); | |
114 | } else { | |
115 | g_assert(async_ret == 0); | |
116 | } | |
117 | ||
118 | g_free(pattern_buf); | |
119 | } | |
120 | ||
121 | /* | |
122 | * Create a uniquely-named empty temporary file. | |
123 | */ | |
124 | static void make_temp(char *template) | |
125 | { | |
126 | int fd; | |
127 | ||
128 | fd = mkstemp(template); | |
129 | g_assert(fd >= 0); | |
130 | close(fd); | |
131 | } | |
132 | ||
133 | static void prepare_imgs(void) | |
134 | { | |
135 | Error *local_err = NULL; | |
136 | ||
137 | make_temp(p_local_disk); | |
138 | make_temp(s_local_disk); | |
139 | make_temp(s_active_disk); | |
140 | make_temp(s_hidden_disk); | |
141 | ||
142 | /* Primary */ | |
143 | bdrv_img_create(p_local_disk, "qcow2", NULL, NULL, NULL, IMG_SIZE, | |
144 | BDRV_O_RDWR, &local_err, true); | |
145 | g_assert(!local_err); | |
146 | ||
147 | /* Secondary */ | |
148 | bdrv_img_create(s_local_disk, "qcow2", NULL, NULL, NULL, IMG_SIZE, | |
149 | BDRV_O_RDWR, &local_err, true); | |
150 | g_assert(!local_err); | |
151 | bdrv_img_create(s_active_disk, "qcow2", NULL, NULL, NULL, IMG_SIZE, | |
152 | BDRV_O_RDWR, &local_err, true); | |
153 | g_assert(!local_err); | |
154 | bdrv_img_create(s_hidden_disk, "qcow2", NULL, NULL, NULL, IMG_SIZE, | |
155 | BDRV_O_RDWR, &local_err, true); | |
156 | g_assert(!local_err); | |
157 | } | |
158 | ||
159 | static void cleanup_imgs(void) | |
160 | { | |
161 | /* Primary */ | |
162 | unlink(p_local_disk); | |
163 | ||
164 | /* Secondary */ | |
165 | unlink(s_local_disk); | |
166 | unlink(s_active_disk); | |
167 | unlink(s_hidden_disk); | |
168 | } | |
169 | ||
170 | static BlockBackend *start_primary(void) | |
171 | { | |
172 | BlockBackend *blk; | |
173 | QemuOpts *opts; | |
174 | QDict *qdict; | |
175 | Error *local_err = NULL; | |
176 | char *cmdline; | |
177 | ||
178 | cmdline = g_strdup_printf("driver=replication,mode=primary,node-name=xxx," | |
179 | "file.driver=qcow2,file.file.filename=%s" | |
180 | , p_local_disk); | |
181 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, cmdline, false); | |
182 | g_free(cmdline); | |
183 | ||
184 | qdict = qemu_opts_to_qdict(opts, NULL); | |
185 | qdict_set_default_str(qdict, BDRV_OPT_CACHE_DIRECT, "off"); | |
186 | qdict_set_default_str(qdict, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
187 | ||
188 | blk = blk_new_open(NULL, NULL, qdict, BDRV_O_RDWR, &local_err); | |
189 | g_assert(blk); | |
190 | g_assert(!local_err); | |
191 | ||
192 | monitor_add_blk(blk, P_ID, &local_err); | |
193 | g_assert(!local_err); | |
194 | ||
195 | qemu_opts_del(opts); | |
196 | ||
197 | return blk; | |
198 | } | |
199 | ||
200 | static void teardown_primary(void) | |
201 | { | |
202 | BlockBackend *blk; | |
203 | ||
204 | /* remove P_ID */ | |
205 | blk = blk_by_name(P_ID); | |
206 | assert(blk); | |
207 | ||
208 | monitor_remove_blk(blk); | |
209 | blk_unref(blk); | |
210 | } | |
211 | ||
212 | static void test_primary_read(void) | |
213 | { | |
214 | BlockBackend *blk; | |
215 | ||
216 | blk = start_primary(); | |
217 | ||
218 | /* read from 0 to IMG_SIZE */ | |
219 | test_blk_read(blk, 0, 0, IMG_SIZE, 0, IMG_SIZE, true); | |
220 | ||
221 | teardown_primary(); | |
222 | } | |
223 | ||
224 | static void test_primary_write(void) | |
225 | { | |
226 | BlockBackend *blk; | |
227 | ||
228 | blk = start_primary(); | |
229 | ||
230 | /* write from 0 to IMG_SIZE */ | |
231 | test_blk_write(blk, 0, 0, IMG_SIZE, true); | |
232 | ||
233 | teardown_primary(); | |
234 | } | |
235 | ||
236 | static void test_primary_start(void) | |
237 | { | |
238 | BlockBackend *blk = NULL; | |
239 | Error *local_err = NULL; | |
240 | ||
241 | blk = start_primary(); | |
242 | ||
243 | replication_start_all(REPLICATION_MODE_PRIMARY, &local_err); | |
244 | g_assert(!local_err); | |
245 | ||
246 | /* read from 0 to IMG_SIZE */ | |
247 | test_blk_read(blk, 0, 0, IMG_SIZE, 0, IMG_SIZE, true); | |
248 | ||
249 | /* write 0x22 from 0 to IMG_SIZE */ | |
250 | test_blk_write(blk, 0x22, 0, IMG_SIZE, false); | |
251 | ||
252 | teardown_primary(); | |
253 | } | |
254 | ||
255 | static void test_primary_stop(void) | |
256 | { | |
257 | Error *local_err = NULL; | |
258 | bool failover = true; | |
259 | ||
260 | start_primary(); | |
261 | ||
262 | replication_start_all(REPLICATION_MODE_PRIMARY, &local_err); | |
263 | g_assert(!local_err); | |
264 | ||
265 | replication_stop_all(failover, &local_err); | |
266 | g_assert(!local_err); | |
267 | ||
268 | teardown_primary(); | |
269 | } | |
270 | ||
271 | static void test_primary_do_checkpoint(void) | |
272 | { | |
273 | Error *local_err = NULL; | |
274 | ||
275 | start_primary(); | |
276 | ||
277 | replication_start_all(REPLICATION_MODE_PRIMARY, &local_err); | |
278 | g_assert(!local_err); | |
279 | ||
280 | replication_do_checkpoint_all(&local_err); | |
281 | g_assert(!local_err); | |
282 | ||
283 | teardown_primary(); | |
284 | } | |
285 | ||
286 | static void test_primary_get_error_all(void) | |
287 | { | |
288 | Error *local_err = NULL; | |
289 | ||
290 | start_primary(); | |
291 | ||
292 | replication_start_all(REPLICATION_MODE_PRIMARY, &local_err); | |
293 | g_assert(!local_err); | |
294 | ||
295 | replication_get_error_all(&local_err); | |
296 | g_assert(!local_err); | |
297 | ||
298 | teardown_primary(); | |
299 | } | |
300 | ||
301 | static BlockBackend *start_secondary(void) | |
302 | { | |
303 | QemuOpts *opts; | |
304 | QDict *qdict; | |
305 | BlockBackend *blk; | |
306 | char *cmdline; | |
307 | Error *local_err = NULL; | |
308 | ||
309 | /* add s_local_disk and forge S_LOCAL_DISK_ID */ | |
310 | cmdline = g_strdup_printf("file.filename=%s,driver=qcow2", s_local_disk); | |
311 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, cmdline, false); | |
312 | g_free(cmdline); | |
313 | ||
314 | qdict = qemu_opts_to_qdict(opts, NULL); | |
315 | qdict_set_default_str(qdict, BDRV_OPT_CACHE_DIRECT, "off"); | |
316 | qdict_set_default_str(qdict, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
317 | ||
318 | blk = blk_new_open(NULL, NULL, qdict, BDRV_O_RDWR, &local_err); | |
319 | assert(blk); | |
320 | monitor_add_blk(blk, S_LOCAL_DISK_ID, &local_err); | |
321 | g_assert(!local_err); | |
322 | ||
323 | /* format s_local_disk with pattern "0x11" */ | |
324 | test_blk_write(blk, 0x11, 0, IMG_SIZE, false); | |
325 | ||
326 | qemu_opts_del(opts); | |
327 | ||
328 | /* add S_(ACTIVE/HIDDEN)_DISK and forge S_ID */ | |
329 | cmdline = g_strdup_printf("driver=replication,mode=secondary,top-id=%s," | |
330 | "file.driver=qcow2,file.file.filename=%s," | |
331 | "file.backing.driver=qcow2," | |
332 | "file.backing.file.filename=%s," | |
333 | "file.backing.backing=%s" | |
334 | , S_ID, s_active_disk, s_hidden_disk | |
335 | , S_LOCAL_DISK_ID); | |
336 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, cmdline, false); | |
337 | g_free(cmdline); | |
338 | ||
339 | qdict = qemu_opts_to_qdict(opts, NULL); | |
340 | qdict_set_default_str(qdict, BDRV_OPT_CACHE_DIRECT, "off"); | |
341 | qdict_set_default_str(qdict, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
342 | ||
343 | blk = blk_new_open(NULL, NULL, qdict, BDRV_O_RDWR, &local_err); | |
344 | assert(blk); | |
345 | monitor_add_blk(blk, S_ID, &local_err); | |
346 | g_assert(!local_err); | |
347 | ||
348 | qemu_opts_del(opts); | |
349 | ||
350 | return blk; | |
351 | } | |
352 | ||
353 | static void teardown_secondary(void) | |
354 | { | |
355 | /* only need to destroy two BBs */ | |
356 | BlockBackend *blk; | |
357 | ||
358 | /* remove S_LOCAL_DISK_ID */ | |
359 | blk = blk_by_name(S_LOCAL_DISK_ID); | |
360 | assert(blk); | |
361 | ||
362 | monitor_remove_blk(blk); | |
363 | blk_unref(blk); | |
364 | ||
365 | /* remove S_ID */ | |
366 | blk = blk_by_name(S_ID); | |
367 | assert(blk); | |
368 | ||
369 | monitor_remove_blk(blk); | |
370 | blk_unref(blk); | |
371 | } | |
372 | ||
373 | static void test_secondary_read(void) | |
374 | { | |
375 | BlockBackend *blk; | |
376 | ||
377 | blk = start_secondary(); | |
378 | ||
379 | /* read from 0 to IMG_SIZE */ | |
380 | test_blk_read(blk, 0, 0, IMG_SIZE, 0, IMG_SIZE, true); | |
381 | ||
382 | teardown_secondary(); | |
383 | } | |
384 | ||
385 | static void test_secondary_write(void) | |
386 | { | |
387 | BlockBackend *blk; | |
388 | ||
389 | blk = start_secondary(); | |
390 | ||
391 | /* write from 0 to IMG_SIZE */ | |
392 | test_blk_write(blk, 0, 0, IMG_SIZE, true); | |
393 | ||
394 | teardown_secondary(); | |
395 | } | |
396 | ||
397 | static void test_secondary_start(void) | |
398 | { | |
399 | BlockBackend *top_blk, *local_blk; | |
400 | Error *local_err = NULL; | |
401 | bool failover = true; | |
402 | ||
403 | top_blk = start_secondary(); | |
404 | replication_start_all(REPLICATION_MODE_SECONDARY, &local_err); | |
405 | g_assert(!local_err); | |
406 | ||
407 | /* read from s_local_disk (0, IMG_SIZE) */ | |
408 | test_blk_read(top_blk, 0x11, 0, IMG_SIZE, 0, IMG_SIZE, false); | |
409 | ||
410 | /* write 0x22 to s_local_disk (IMG_SIZE / 2, IMG_SIZE) */ | |
411 | local_blk = blk_by_name(S_LOCAL_DISK_ID); | |
412 | test_blk_write(local_blk, 0x22, IMG_SIZE / 2, IMG_SIZE / 2, false); | |
413 | ||
414 | /* replication will backup s_local_disk to s_hidden_disk */ | |
415 | test_blk_read(top_blk, 0x11, IMG_SIZE / 2, | |
416 | IMG_SIZE / 2, 0, IMG_SIZE, false); | |
417 | ||
418 | /* write 0x33 to s_active_disk (0, IMG_SIZE / 2) */ | |
419 | test_blk_write(top_blk, 0x33, 0, IMG_SIZE / 2, false); | |
420 | ||
421 | /* read from s_active_disk (0, IMG_SIZE/2) */ | |
422 | test_blk_read(top_blk, 0x33, 0, IMG_SIZE / 2, | |
423 | 0, IMG_SIZE / 2, false); | |
424 | ||
425 | /* unblock top_bs */ | |
426 | replication_stop_all(failover, &local_err); | |
427 | g_assert(!local_err); | |
428 | ||
429 | teardown_secondary(); | |
430 | } | |
431 | ||
432 | ||
433 | static void test_secondary_stop(void) | |
434 | { | |
435 | BlockBackend *top_blk, *local_blk; | |
436 | Error *local_err = NULL; | |
437 | bool failover = true; | |
438 | ||
439 | top_blk = start_secondary(); | |
440 | replication_start_all(REPLICATION_MODE_SECONDARY, &local_err); | |
441 | g_assert(!local_err); | |
442 | ||
443 | /* write 0x22 to s_local_disk (IMG_SIZE / 2, IMG_SIZE) */ | |
444 | local_blk = blk_by_name(S_LOCAL_DISK_ID); | |
445 | test_blk_write(local_blk, 0x22, IMG_SIZE / 2, IMG_SIZE / 2, false); | |
446 | ||
447 | /* replication will backup s_local_disk to s_hidden_disk */ | |
448 | test_blk_read(top_blk, 0x11, IMG_SIZE / 2, | |
449 | IMG_SIZE / 2, 0, IMG_SIZE, false); | |
450 | ||
451 | /* write 0x33 to s_active_disk (0, IMG_SIZE / 2) */ | |
452 | test_blk_write(top_blk, 0x33, 0, IMG_SIZE / 2, false); | |
453 | ||
454 | /* do active commit */ | |
455 | replication_stop_all(failover, &local_err); | |
456 | g_assert(!local_err); | |
457 | ||
458 | /* read from s_local_disk (0, IMG_SIZE / 2) */ | |
459 | test_blk_read(top_blk, 0x33, 0, IMG_SIZE / 2, | |
460 | 0, IMG_SIZE / 2, false); | |
461 | ||
462 | ||
463 | /* read from s_local_disk (IMG_SIZE / 2, IMG_SIZE) */ | |
464 | test_blk_read(top_blk, 0x22, IMG_SIZE / 2, | |
465 | IMG_SIZE / 2, 0, IMG_SIZE, false); | |
466 | ||
467 | teardown_secondary(); | |
468 | } | |
469 | ||
470 | static void test_secondary_do_checkpoint(void) | |
471 | { | |
472 | BlockBackend *top_blk, *local_blk; | |
473 | Error *local_err = NULL; | |
474 | bool failover = true; | |
475 | ||
476 | top_blk = start_secondary(); | |
477 | replication_start_all(REPLICATION_MODE_SECONDARY, &local_err); | |
478 | g_assert(!local_err); | |
479 | ||
480 | /* write 0x22 to s_local_disk (IMG_SIZE / 2, IMG_SIZE) */ | |
481 | local_blk = blk_by_name(S_LOCAL_DISK_ID); | |
482 | test_blk_write(local_blk, 0x22, IMG_SIZE / 2, | |
483 | IMG_SIZE / 2, false); | |
484 | ||
485 | /* replication will backup s_local_disk to s_hidden_disk */ | |
486 | test_blk_read(top_blk, 0x11, IMG_SIZE / 2, | |
487 | IMG_SIZE / 2, 0, IMG_SIZE, false); | |
488 | ||
489 | replication_do_checkpoint_all(&local_err); | |
490 | g_assert(!local_err); | |
491 | ||
492 | /* after checkpoint, read pattern 0x22 from s_local_disk */ | |
493 | test_blk_read(top_blk, 0x22, IMG_SIZE / 2, | |
494 | IMG_SIZE / 2, 0, IMG_SIZE, false); | |
495 | ||
496 | /* unblock top_bs */ | |
497 | replication_stop_all(failover, &local_err); | |
498 | g_assert(!local_err); | |
499 | ||
500 | teardown_secondary(); | |
501 | } | |
502 | ||
503 | static void test_secondary_get_error_all(void) | |
504 | { | |
505 | Error *local_err = NULL; | |
506 | bool failover = true; | |
507 | ||
508 | start_secondary(); | |
509 | replication_start_all(REPLICATION_MODE_SECONDARY, &local_err); | |
510 | g_assert(!local_err); | |
511 | ||
512 | replication_get_error_all(&local_err); | |
513 | g_assert(!local_err); | |
514 | ||
515 | /* unblock top_bs */ | |
516 | replication_stop_all(failover, &local_err); | |
517 | g_assert(!local_err); | |
518 | ||
519 | teardown_secondary(); | |
520 | } | |
521 | ||
522 | static void sigabrt_handler(int signo) | |
523 | { | |
524 | cleanup_imgs(); | |
525 | } | |
526 | ||
527 | static void setup_sigabrt_handler(void) | |
528 | { | |
529 | struct sigaction sigact; | |
530 | ||
531 | sigact = (struct sigaction) { | |
532 | .sa_handler = sigabrt_handler, | |
533 | .sa_flags = SA_RESETHAND, | |
534 | }; | |
535 | sigemptyset(&sigact.sa_mask); | |
536 | sigaction(SIGABRT, &sigact, NULL); | |
537 | } | |
538 | ||
539 | int main(int argc, char **argv) | |
540 | { | |
541 | int ret; | |
542 | qemu_init_main_loop(&error_fatal); | |
543 | bdrv_init(); | |
544 | ||
545 | g_test_init(&argc, &argv, NULL); | |
546 | setup_sigabrt_handler(); | |
547 | ||
548 | prepare_imgs(); | |
549 | ||
550 | /* Primary */ | |
551 | g_test_add_func("/replication/primary/read", test_primary_read); | |
552 | g_test_add_func("/replication/primary/write", test_primary_write); | |
553 | g_test_add_func("/replication/primary/start", test_primary_start); | |
554 | g_test_add_func("/replication/primary/stop", test_primary_stop); | |
555 | g_test_add_func("/replication/primary/do_checkpoint", | |
556 | test_primary_do_checkpoint); | |
557 | g_test_add_func("/replication/primary/get_error_all", | |
558 | test_primary_get_error_all); | |
559 | ||
560 | /* Secondary */ | |
561 | g_test_add_func("/replication/secondary/read", test_secondary_read); | |
562 | g_test_add_func("/replication/secondary/write", test_secondary_write); | |
563 | g_test_add_func("/replication/secondary/start", test_secondary_start); | |
564 | g_test_add_func("/replication/secondary/stop", test_secondary_stop); | |
565 | g_test_add_func("/replication/secondary/do_checkpoint", | |
566 | test_secondary_do_checkpoint); | |
567 | g_test_add_func("/replication/secondary/get_error_all", | |
568 | test_secondary_get_error_all); | |
569 | ||
570 | ret = g_test_run(); | |
571 | ||
572 | cleanup_imgs(); | |
573 | ||
574 | return ret; | |
575 | } |