Commit | Line | Data |
---|---|---|
fc5c0345 DG |
1 | /* |
2 | * rbd engine | |
3 | * | |
4 | * IO engine using Ceph's librbd to test RADOS Block Devices. | |
5 | * | |
6 | */ | |
7 | ||
8 | #include <rbd/librbd.h> | |
9 | ||
10 | #include "../fio.h" | |
d220c761 | 11 | #include "../optgroup.h" |
a4c4c346 | 12 | #ifdef CONFIG_RBD_BLKIN |
13 | #include <zipkin_c.h> | |
14 | #endif | |
fc5c0345 | 15 | |
53b6c979 PL |
16 | #ifdef CONFIG_RBD_POLL |
17 | /* add for poll */ | |
18 | #include <poll.h> | |
19 | #include <sys/eventfd.h> | |
20 | #endif | |
21 | ||
fc5c0345 DG |
22 | struct fio_rbd_iou { |
23 | struct io_u *io_u; | |
d8b64af2 | 24 | rbd_completion_t completion; |
d8b64af2 | 25 | int io_seen; |
b8ecbef6 | 26 | int io_complete; |
550beaad | 27 | #ifdef CONFIG_RBD_BLKIN |
a4c4c346 | 28 | struct blkin_trace_info info; |
550beaad | 29 | #endif |
fc5c0345 DG |
30 | }; |
31 | ||
32 | struct rbd_data { | |
33 | rados_t cluster; | |
34 | rados_ioctx_t io_ctx; | |
35 | rbd_image_t image; | |
36 | struct io_u **aio_events; | |
6f9961ac | 37 | struct io_u **sort_events; |
53b6c979 | 38 | int fd; /* add for poll */ |
fc5c0345 DG |
39 | }; |
40 | ||
41 | struct rbd_options { | |
a1f871c7 | 42 | void *pad; |
6e20c6e7 | 43 | char *cluster_name; |
fc5c0345 DG |
44 | char *rbd_name; |
45 | char *pool_name; | |
46 | char *client_name; | |
d7d702c7 | 47 | int busy_poll; |
fc5c0345 DG |
48 | }; |
49 | ||
50 | static struct fio_option options[] = { | |
6e20c6e7 T |
51 | { |
52 | .name = "clustername", | |
53 | .lname = "ceph cluster name", | |
54 | .type = FIO_OPT_STR_STORE, | |
55 | .help = "Cluster name for ceph", | |
56 | .off1 = offsetof(struct rbd_options, cluster_name), | |
57 | .category = FIO_OPT_C_ENGINE, | |
58 | .group = FIO_OPT_G_RBD, | |
59 | }, | |
fc5c0345 | 60 | { |
d8b64af2 JA |
61 | .name = "rbdname", |
62 | .lname = "rbd engine rbdname", | |
63 | .type = FIO_OPT_STR_STORE, | |
64 | .help = "RBD name for RBD engine", | |
65 | .off1 = offsetof(struct rbd_options, rbd_name), | |
66 | .category = FIO_OPT_C_ENGINE, | |
67 | .group = FIO_OPT_G_RBD, | |
68 | }, | |
fc5c0345 | 69 | { |
d7d702c7 JA |
70 | .name = "pool", |
71 | .lname = "rbd engine pool", | |
72 | .type = FIO_OPT_STR_STORE, | |
73 | .help = "Name of the pool hosting the RBD for the RBD engine", | |
74 | .off1 = offsetof(struct rbd_options, pool_name), | |
75 | .category = FIO_OPT_C_ENGINE, | |
76 | .group = FIO_OPT_G_RBD, | |
d8b64af2 | 77 | }, |
fc5c0345 | 78 | { |
d7d702c7 JA |
79 | .name = "clientname", |
80 | .lname = "rbd engine clientname", | |
81 | .type = FIO_OPT_STR_STORE, | |
82 | .help = "Name of the ceph client to access the RBD for the RBD engine", | |
83 | .off1 = offsetof(struct rbd_options, client_name), | |
84 | .category = FIO_OPT_C_ENGINE, | |
85 | .group = FIO_OPT_G_RBD, | |
86 | }, | |
87 | { | |
88 | .name = "busy_poll", | |
89 | .lname = "Busy poll", | |
90 | .type = FIO_OPT_BOOL, | |
91 | .help = "Busy poll for completions instead of sleeping", | |
fea585d4 | 92 | .off1 = offsetof(struct rbd_options, busy_poll), |
d7d702c7 JA |
93 | .def = "0", |
94 | .category = FIO_OPT_C_ENGINE, | |
95 | .group = FIO_OPT_G_RBD, | |
d8b64af2 | 96 | }, |
fc5c0345 | 97 | { |
d8b64af2 JA |
98 | .name = NULL, |
99 | }, | |
fc5c0345 DG |
100 | }; |
101 | ||
102 | static int _fio_setup_rbd_data(struct thread_data *td, | |
103 | struct rbd_data **rbd_data_ptr) | |
104 | { | |
6f9961ac | 105 | struct rbd_data *rbd; |
fc5c0345 | 106 | |
565e784d | 107 | if (td->io_ops_data) |
fc5c0345 DG |
108 | return 0; |
109 | ||
6f9961ac JA |
110 | rbd = calloc(1, sizeof(struct rbd_data)); |
111 | if (!rbd) | |
fc5c0345 DG |
112 | goto failed; |
113 | ||
53b6c979 PL |
114 | /* add for poll, init fd: -1 */ |
115 | rbd->fd = -1; | |
53b6c979 | 116 | |
6f9961ac JA |
117 | rbd->aio_events = calloc(td->o.iodepth, sizeof(struct io_u *)); |
118 | if (!rbd->aio_events) | |
fc5c0345 DG |
119 | goto failed; |
120 | ||
6f9961ac JA |
121 | rbd->sort_events = calloc(td->o.iodepth, sizeof(struct io_u *)); |
122 | if (!rbd->sort_events) | |
123 | goto failed; | |
fc5c0345 | 124 | |
6f9961ac | 125 | *rbd_data_ptr = rbd; |
fc5c0345 DG |
126 | return 0; |
127 | ||
128 | failed: | |
5a4adfd2 JQ |
129 | if (rbd) { |
130 | if (rbd->aio_events) | |
131 | free(rbd->aio_events); | |
132 | if (rbd->sort_events) | |
133 | free(rbd->sort_events); | |
6f9961ac | 134 | free(rbd); |
5a4adfd2 | 135 | } |
fc5c0345 DG |
136 | return 1; |
137 | ||
138 | } | |
139 | ||
73ae55c3 JA |
140 | #ifdef CONFIG_RBD_POLL |
141 | static bool _fio_rbd_setup_poll(struct rbd_data *rbd) | |
142 | { | |
143 | int r; | |
144 | ||
145 | /* add for rbd poll */ | |
146 | rbd->fd = eventfd(0, EFD_NONBLOCK); | |
147 | if (rbd->fd < 0) { | |
148 | log_err("eventfd failed.\n"); | |
149 | return false; | |
150 | } | |
151 | ||
152 | r = rbd_set_image_notification(rbd->image, rbd->fd, EVENT_TYPE_EVENTFD); | |
153 | if (r < 0) { | |
154 | log_err("rbd_set_image_notification failed.\n"); | |
155 | close(rbd->fd); | |
156 | rbd->fd = -1; | |
157 | return false; | |
158 | } | |
159 | ||
160 | return true; | |
161 | } | |
162 | #else | |
163 | static bool _fio_rbd_setup_poll(struct rbd_data *rbd) | |
164 | { | |
165 | return true; | |
166 | } | |
167 | #endif | |
168 | ||
fc5c0345 DG |
169 | static int _fio_rbd_connect(struct thread_data *td) |
170 | { | |
565e784d | 171 | struct rbd_data *rbd = td->io_ops_data; |
fc5c0345 DG |
172 | struct rbd_options *o = td->eo; |
173 | int r; | |
174 | ||
6e20c6e7 T |
175 | if (o->cluster_name) { |
176 | char *client_name = NULL; | |
177 | ||
178 | /* | |
89e5ec96 | 179 | * If we specify cluser name, the rados_create2 |
6e20c6e7 T |
180 | * will not assume 'client.'. name is considered |
181 | * as a full type.id namestr | |
182 | */ | |
89e5ec96 JQ |
183 | if (o->client_name) { |
184 | if (!index(o->client_name, '.')) { | |
185 | client_name = calloc(1, strlen("client.") + | |
186 | strlen(o->client_name) + 1); | |
187 | strcat(client_name, "client."); | |
6ec0dcd1 JQ |
188 | strcat(client_name, o->client_name); |
189 | } else { | |
190 | client_name = o->client_name; | |
89e5ec96 | 191 | } |
6e20c6e7 | 192 | } |
6ec0dcd1 | 193 | |
6e20c6e7 | 194 | r = rados_create2(&rbd->cluster, o->cluster_name, |
6ec0dcd1 JQ |
195 | client_name, 0); |
196 | ||
197 | if (client_name && !index(o->client_name, '.')) | |
198 | free(client_name); | |
6e20c6e7 T |
199 | } else |
200 | r = rados_create(&rbd->cluster, o->client_name); | |
201 | ||
fc5c0345 DG |
202 | if (r < 0) { |
203 | log_err("rados_create failed.\n"); | |
204 | goto failed_early; | |
205 | } | |
206 | ||
6f9961ac | 207 | r = rados_conf_read_file(rbd->cluster, NULL); |
fc5c0345 DG |
208 | if (r < 0) { |
209 | log_err("rados_conf_read_file failed.\n"); | |
210 | goto failed_early; | |
211 | } | |
212 | ||
6f9961ac | 213 | r = rados_connect(rbd->cluster); |
fc5c0345 DG |
214 | if (r < 0) { |
215 | log_err("rados_connect failed.\n"); | |
216 | goto failed_shutdown; | |
217 | } | |
218 | ||
6f9961ac | 219 | r = rados_ioctx_create(rbd->cluster, o->pool_name, &rbd->io_ctx); |
fc5c0345 DG |
220 | if (r < 0) { |
221 | log_err("rados_ioctx_create failed.\n"); | |
222 | goto failed_shutdown; | |
223 | } | |
224 | ||
6f9961ac | 225 | r = rbd_open(rbd->io_ctx, o->rbd_name, &rbd->image, NULL /*snap */ ); |
fc5c0345 DG |
226 | if (r < 0) { |
227 | log_err("rbd_open failed.\n"); | |
228 | goto failed_open; | |
229 | } | |
53b6c979 | 230 | |
73ae55c3 JA |
231 | if (!_fio_rbd_setup_poll(rbd)) |
232 | goto failed_poll; | |
53b6c979 | 233 | |
fc5c0345 DG |
234 | return 0; |
235 | ||
73ae55c3 JA |
236 | failed_poll: |
237 | rbd_close(rbd->image); | |
238 | rbd->image = NULL; | |
fc5c0345 | 239 | failed_open: |
6f9961ac JA |
240 | rados_ioctx_destroy(rbd->io_ctx); |
241 | rbd->io_ctx = NULL; | |
fc5c0345 | 242 | failed_shutdown: |
6f9961ac JA |
243 | rados_shutdown(rbd->cluster); |
244 | rbd->cluster = NULL; | |
fc5c0345 DG |
245 | failed_early: |
246 | return 1; | |
247 | } | |
248 | ||
6f9961ac | 249 | static void _fio_rbd_disconnect(struct rbd_data *rbd) |
fc5c0345 | 250 | { |
6f9961ac | 251 | if (!rbd) |
fc5c0345 DG |
252 | return; |
253 | ||
53b6c979 | 254 | /* close eventfd */ |
73ae55c3 | 255 | if (rbd->fd != -1) { |
53b6c979 PL |
256 | close(rbd->fd); |
257 | rbd->fd = -1; | |
258 | } | |
53b6c979 | 259 | |
fc5c0345 | 260 | /* shutdown everything */ |
6f9961ac JA |
261 | if (rbd->image) { |
262 | rbd_close(rbd->image); | |
263 | rbd->image = NULL; | |
fc5c0345 DG |
264 | } |
265 | ||
6f9961ac JA |
266 | if (rbd->io_ctx) { |
267 | rados_ioctx_destroy(rbd->io_ctx); | |
268 | rbd->io_ctx = NULL; | |
fc5c0345 DG |
269 | } |
270 | ||
6f9961ac JA |
271 | if (rbd->cluster) { |
272 | rados_shutdown(rbd->cluster); | |
273 | rbd->cluster = NULL; | |
fc5c0345 DG |
274 | } |
275 | } | |
276 | ||
d8b64af2 | 277 | static void _fio_rbd_finish_aiocb(rbd_completion_t comp, void *data) |
fc5c0345 | 278 | { |
dbf388d2 JA |
279 | struct fio_rbd_iou *fri = data; |
280 | struct io_u *io_u = fri->io_u; | |
d8b64af2 | 281 | ssize_t ret; |
fc5c0345 | 282 | |
d8b64af2 JA |
283 | /* |
284 | * Looks like return value is 0 for success, or < 0 for | |
285 | * a specific error. So we have to assume that it can't do | |
286 | * partial completions. | |
287 | */ | |
288 | ret = rbd_aio_get_return_value(fri->completion); | |
289 | if (ret < 0) { | |
290 | io_u->error = ret; | |
291 | io_u->resid = io_u->xfer_buflen; | |
292 | } else | |
293 | io_u->error = 0; | |
20cf5aab JD |
294 | |
295 | fri->io_complete = 1; | |
d8b64af2 | 296 | } |
fc5c0345 | 297 | |
d8b64af2 JA |
298 | static struct io_u *fio_rbd_event(struct thread_data *td, int event) |
299 | { | |
565e784d | 300 | struct rbd_data *rbd = td->io_ops_data; |
fc5c0345 | 301 | |
6f9961ac | 302 | return rbd->aio_events[event]; |
fc5c0345 DG |
303 | } |
304 | ||
6f9961ac | 305 | static inline int fri_check_complete(struct rbd_data *rbd, struct io_u *io_u, |
d8b64af2 | 306 | unsigned int *events) |
fc5c0345 | 307 | { |
d8b64af2 | 308 | struct fio_rbd_iou *fri = io_u->engine_data; |
fc5c0345 | 309 | |
b8ecbef6 | 310 | if (fri->io_complete) { |
d8b64af2 | 311 | fri->io_seen = 1; |
6f9961ac | 312 | rbd->aio_events[*events] = io_u; |
d8b64af2 | 313 | (*events)++; |
fc5c0345 | 314 | |
d8b64af2 JA |
315 | rbd_aio_release(fri->completion); |
316 | return 1; | |
317 | } | |
fc5c0345 | 318 | |
d8b64af2 | 319 | return 0; |
fc5c0345 DG |
320 | } |
321 | ||
6f9961ac JA |
322 | static inline int rbd_io_u_seen(struct io_u *io_u) |
323 | { | |
324 | struct fio_rbd_iou *fri = io_u->engine_data; | |
325 | ||
326 | return fri->io_seen; | |
327 | } | |
328 | ||
329 | static void rbd_io_u_wait_complete(struct io_u *io_u) | |
330 | { | |
331 | struct fio_rbd_iou *fri = io_u->engine_data; | |
332 | ||
333 | rbd_aio_wait_for_complete(fri->completion); | |
334 | } | |
335 | ||
336 | static int rbd_io_u_cmp(const void *p1, const void *p2) | |
337 | { | |
338 | const struct io_u **a = (const struct io_u **) p1; | |
339 | const struct io_u **b = (const struct io_u **) p2; | |
340 | uint64_t at, bt; | |
341 | ||
342 | at = utime_since_now(&(*a)->start_time); | |
343 | bt = utime_since_now(&(*b)->start_time); | |
344 | ||
345 | if (at < bt) | |
346 | return -1; | |
347 | else if (at == bt) | |
348 | return 0; | |
349 | else | |
350 | return 1; | |
351 | } | |
352 | ||
d8b64af2 JA |
353 | static int rbd_iter_events(struct thread_data *td, unsigned int *events, |
354 | unsigned int min_evts, int wait) | |
82340a9f | 355 | { |
565e784d | 356 | struct rbd_data *rbd = td->io_ops_data; |
d8b64af2 JA |
357 | unsigned int this_events = 0; |
358 | struct io_u *io_u; | |
53b6c979 PL |
359 | int i, sidx = 0; |
360 | ||
361 | #ifdef CONFIG_RBD_POLL | |
362 | int ret = 0; | |
363 | int event_num = 0; | |
364 | struct fio_rbd_iou *fri = NULL; | |
365 | rbd_completion_t comps[min_evts]; | |
82340a9f | 366 | |
53b6c979 PL |
367 | struct pollfd pfd; |
368 | pfd.fd = rbd->fd; | |
369 | pfd.events = POLLIN; | |
370 | ||
371 | ret = poll(&pfd, 1, -1); | |
73ae55c3 | 372 | if (ret <= 0) |
53b6c979 | 373 | return 0; |
73ae55c3 | 374 | |
53b6c979 PL |
375 | assert(pfd.revents & POLLIN); |
376 | ||
377 | event_num = rbd_poll_io_events(rbd->image, comps, min_evts); | |
378 | ||
379 | for (i = 0; i < event_num; i++) { | |
380 | fri = rbd_aio_get_arg(comps[i]); | |
381 | io_u = fri->io_u; | |
382 | #else | |
d8b64af2 | 383 | io_u_qiter(&td->io_u_all, io_u, i) { |
53b6c979 | 384 | #endif |
d8b64af2 JA |
385 | if (!(io_u->flags & IO_U_F_FLIGHT)) |
386 | continue; | |
6f9961ac | 387 | if (rbd_io_u_seen(io_u)) |
d8b64af2 | 388 | continue; |
82340a9f | 389 | |
6f9961ac | 390 | if (fri_check_complete(rbd, io_u, events)) |
d8b64af2 | 391 | this_events++; |
6f9961ac JA |
392 | else if (wait) |
393 | rbd->sort_events[sidx++] = io_u; | |
394 | } | |
82340a9f | 395 | |
6f9961ac JA |
396 | if (!wait || !sidx) |
397 | return this_events; | |
398 | ||
399 | /* | |
400 | * Sort events, oldest issue first, then wait on as many as we | |
401 | * need in order of age. If we have enough events, stop waiting, | |
402 | * and just check if any of the older ones are done. | |
403 | */ | |
404 | if (sidx > 1) | |
405 | qsort(rbd->sort_events, sidx, sizeof(struct io_u *), rbd_io_u_cmp); | |
406 | ||
407 | for (i = 0; i < sidx; i++) { | |
408 | io_u = rbd->sort_events[i]; | |
409 | ||
410 | if (fri_check_complete(rbd, io_u, events)) { | |
411 | this_events++; | |
412 | continue; | |
d8b64af2 | 413 | } |
6f9961ac JA |
414 | |
415 | /* | |
416 | * Stop waiting when we have enough, but continue checking | |
417 | * all pending IOs if they are complete. | |
418 | */ | |
d8b64af2 | 419 | if (*events >= min_evts) |
6f9961ac JA |
420 | continue; |
421 | ||
422 | rbd_io_u_wait_complete(io_u); | |
423 | ||
424 | if (fri_check_complete(rbd, io_u, events)) | |
425 | this_events++; | |
d8b64af2 | 426 | } |
fc5c0345 | 427 | |
d8b64af2 | 428 | return this_events; |
fc5c0345 DG |
429 | } |
430 | ||
431 | static int fio_rbd_getevents(struct thread_data *td, unsigned int min, | |
1f440ece | 432 | unsigned int max, const struct timespec *t) |
fc5c0345 | 433 | { |
d8b64af2 | 434 | unsigned int this_events, events = 0; |
d7d702c7 | 435 | struct rbd_options *o = td->eo; |
d8b64af2 | 436 | int wait = 0; |
fc5c0345 DG |
437 | |
438 | do { | |
d8b64af2 | 439 | this_events = rbd_iter_events(td, &events, min, wait); |
fc5c0345 | 440 | |
d8b64af2 | 441 | if (events >= min) |
fc5c0345 | 442 | break; |
d8b64af2 JA |
443 | if (this_events) |
444 | continue; | |
fc5c0345 | 445 | |
d7d702c7 JA |
446 | if (!o->busy_poll) |
447 | wait = 1; | |
448 | else | |
449 | nop; | |
fc5c0345 DG |
450 | } while (1); |
451 | ||
452 | return events; | |
453 | } | |
454 | ||
455 | static int fio_rbd_queue(struct thread_data *td, struct io_u *io_u) | |
456 | { | |
565e784d | 457 | struct rbd_data *rbd = td->io_ops_data; |
d8b64af2 JA |
458 | struct fio_rbd_iou *fri = io_u->engine_data; |
459 | int r = -1; | |
fc5c0345 DG |
460 | |
461 | fio_ro_check(td, io_u); | |
462 | ||
d8b64af2 | 463 | fri->io_seen = 0; |
b8ecbef6 | 464 | fri->io_complete = 0; |
d8b64af2 | 465 | |
dbf388d2 | 466 | r = rbd_aio_create_completion(fri, _fio_rbd_finish_aiocb, |
d8b64af2 | 467 | &fri->completion); |
dbf388d2 JA |
468 | if (r < 0) { |
469 | log_err("rbd_aio_create_completion failed.\n"); | |
470 | goto failed; | |
471 | } | |
fc5c0345 | 472 | |
dbf388d2 | 473 | if (io_u->ddir == DDIR_WRITE) { |
a4c4c346 | 474 | #ifdef CONFIG_RBD_BLKIN |
475 | blkin_init_trace_info(&fri->info); | |
476 | r = rbd_aio_write_traced(rbd->image, io_u->offset, io_u->xfer_buflen, | |
477 | io_u->xfer_buf, fri->completion, &fri->info); | |
478 | #else | |
6f9961ac JA |
479 | r = rbd_aio_write(rbd->image, io_u->offset, io_u->xfer_buflen, |
480 | io_u->xfer_buf, fri->completion); | |
a4c4c346 | 481 | #endif |
fc5c0345 DG |
482 | if (r < 0) { |
483 | log_err("rbd_aio_write failed.\n"); | |
dbf388d2 | 484 | goto failed_comp; |
fc5c0345 DG |
485 | } |
486 | ||
487 | } else if (io_u->ddir == DDIR_READ) { | |
a4c4c346 | 488 | #ifdef CONFIG_RBD_BLKIN |
489 | blkin_init_trace_info(&fri->info); | |
490 | r = rbd_aio_read_traced(rbd->image, io_u->offset, io_u->xfer_buflen, | |
491 | io_u->xfer_buf, fri->completion, &fri->info); | |
492 | #else | |
6f9961ac JA |
493 | r = rbd_aio_read(rbd->image, io_u->offset, io_u->xfer_buflen, |
494 | io_u->xfer_buf, fri->completion); | |
a4c4c346 | 495 | #endif |
fc5c0345 DG |
496 | |
497 | if (r < 0) { | |
498 | log_err("rbd_aio_read failed.\n"); | |
dbf388d2 | 499 | goto failed_comp; |
fc5c0345 | 500 | } |
dbf388d2 | 501 | } else if (io_u->ddir == DDIR_TRIM) { |
6f9961ac JA |
502 | r = rbd_aio_discard(rbd->image, io_u->offset, |
503 | io_u->xfer_buflen, fri->completion); | |
82340a9f | 504 | if (r < 0) { |
dbf388d2 JA |
505 | log_err("rbd_aio_discard failed.\n"); |
506 | goto failed_comp; | |
82340a9f | 507 | } |
dbf388d2 | 508 | } else if (io_u->ddir == DDIR_SYNC) { |
6f9961ac | 509 | r = rbd_aio_flush(rbd->image, fri->completion); |
fc5c0345 DG |
510 | if (r < 0) { |
511 | log_err("rbd_flush failed.\n"); | |
dbf388d2 | 512 | goto failed_comp; |
fc5c0345 | 513 | } |
fc5c0345 DG |
514 | } else { |
515 | dprint(FD_IO, "%s: Warning: unhandled ddir: %d\n", __func__, | |
516 | io_u->ddir); | |
dbf388d2 | 517 | goto failed_comp; |
fc5c0345 DG |
518 | } |
519 | ||
520 | return FIO_Q_QUEUED; | |
dbf388d2 JA |
521 | failed_comp: |
522 | rbd_aio_release(fri->completion); | |
fc5c0345 DG |
523 | failed: |
524 | io_u->error = r; | |
525 | td_verror(td, io_u->error, "xfer"); | |
526 | return FIO_Q_COMPLETED; | |
527 | } | |
528 | ||
529 | static int fio_rbd_init(struct thread_data *td) | |
530 | { | |
531 | int r; | |
532 | ||
533 | r = _fio_rbd_connect(td); | |
534 | if (r) { | |
535 | log_err("fio_rbd_connect failed, return code: %d .\n", r); | |
536 | goto failed; | |
537 | } | |
538 | ||
539 | return 0; | |
540 | ||
541 | failed: | |
542 | return 1; | |
fc5c0345 DG |
543 | } |
544 | ||
545 | static void fio_rbd_cleanup(struct thread_data *td) | |
546 | { | |
565e784d | 547 | struct rbd_data *rbd = td->io_ops_data; |
fc5c0345 | 548 | |
6f9961ac JA |
549 | if (rbd) { |
550 | _fio_rbd_disconnect(rbd); | |
551 | free(rbd->aio_events); | |
552 | free(rbd->sort_events); | |
553 | free(rbd); | |
fc5c0345 | 554 | } |
fc5c0345 DG |
555 | } |
556 | ||
557 | static int fio_rbd_setup(struct thread_data *td) | |
558 | { | |
fc5c0345 DG |
559 | rbd_image_info_t info; |
560 | struct fio_file *f; | |
6f9961ac | 561 | struct rbd_data *rbd = NULL; |
fc5c0345 | 562 | int major, minor, extra; |
6f9961ac | 563 | int r; |
fc5c0345 DG |
564 | |
565 | /* log version of librbd. No cluster connection required. */ | |
566 | rbd_version(&major, &minor, &extra); | |
567 | log_info("rbd engine: RBD version: %d.%d.%d\n", major, minor, extra); | |
568 | ||
569 | /* allocate engine specific structure to deal with librbd. */ | |
6f9961ac | 570 | r = _fio_setup_rbd_data(td, &rbd); |
fc5c0345 DG |
571 | if (r) { |
572 | log_err("fio_setup_rbd_data failed.\n"); | |
573 | goto cleanup; | |
574 | } | |
565e784d | 575 | td->io_ops_data = rbd; |
fc5c0345 | 576 | |
d8b64af2 JA |
577 | /* librbd does not allow us to run first in the main thread and later |
578 | * in a fork child. It needs to be the same process context all the | |
579 | * time. | |
fc5c0345 DG |
580 | */ |
581 | td->o.use_thread = 1; | |
582 | ||
583 | /* connect in the main thread to determine to determine | |
584 | * the size of the given RADOS block device. And disconnect | |
585 | * later on. | |
586 | */ | |
587 | r = _fio_rbd_connect(td); | |
588 | if (r) { | |
589 | log_err("fio_rbd_connect failed.\n"); | |
590 | goto cleanup; | |
591 | } | |
592 | ||
593 | /* get size of the RADOS block device */ | |
6f9961ac | 594 | r = rbd_stat(rbd->image, &info, sizeof(info)); |
fc5c0345 DG |
595 | if (r < 0) { |
596 | log_err("rbd_status failed.\n"); | |
597 | goto disconnect; | |
206c546d PL |
598 | } else if (info.size == 0) { |
599 | log_err("image size should be larger than zero.\n"); | |
600 | r = -EINVAL; | |
601 | goto disconnect; | |
fc5c0345 | 602 | } |
206c546d | 603 | |
fc5c0345 DG |
604 | dprint(FD_IO, "rbd-engine: image size: %lu\n", info.size); |
605 | ||
606 | /* taken from "net" engine. Pretend we deal with files, | |
607 | * even if we do not have any ideas about files. | |
608 | * The size of the RBD is set instead of a artificial file. | |
609 | */ | |
610 | if (!td->files_index) { | |
5903e7b7 | 611 | add_file(td, td->o.filename ? : "rbd", 0, 0); |
fc5c0345 | 612 | td->o.nr_files = td->o.nr_files ? : 1; |
b53f2c54 | 613 | td->o.open_files++; |
fc5c0345 DG |
614 | } |
615 | f = td->files[0]; | |
616 | f->real_file_size = info.size; | |
617 | ||
618 | /* disconnect, then we were only connected to determine | |
619 | * the size of the RBD. | |
620 | */ | |
6f9961ac | 621 | _fio_rbd_disconnect(rbd); |
fc5c0345 DG |
622 | return 0; |
623 | ||
624 | disconnect: | |
6f9961ac | 625 | _fio_rbd_disconnect(rbd); |
fc5c0345 DG |
626 | cleanup: |
627 | fio_rbd_cleanup(td); | |
628 | return r; | |
629 | } | |
630 | ||
631 | static int fio_rbd_open(struct thread_data *td, struct fio_file *f) | |
632 | { | |
633 | return 0; | |
634 | } | |
635 | ||
d9b100fc JA |
636 | static int fio_rbd_invalidate(struct thread_data *td, struct fio_file *f) |
637 | { | |
903b2812 | 638 | #if defined(CONFIG_RBD_INVAL) |
565e784d | 639 | struct rbd_data *rbd = td->io_ops_data; |
903b2812 | 640 | |
6f9961ac | 641 | return rbd_invalidate_cache(rbd->image); |
903b2812 | 642 | #else |
d9b100fc | 643 | return 0; |
903b2812 | 644 | #endif |
d9b100fc JA |
645 | } |
646 | ||
fc5c0345 DG |
647 | static void fio_rbd_io_u_free(struct thread_data *td, struct io_u *io_u) |
648 | { | |
d8b64af2 | 649 | struct fio_rbd_iou *fri = io_u->engine_data; |
fc5c0345 | 650 | |
d8b64af2 | 651 | if (fri) { |
fc5c0345 | 652 | io_u->engine_data = NULL; |
d8b64af2 | 653 | free(fri); |
fc5c0345 DG |
654 | } |
655 | } | |
656 | ||
657 | static int fio_rbd_io_u_init(struct thread_data *td, struct io_u *io_u) | |
658 | { | |
d8b64af2 | 659 | struct fio_rbd_iou *fri; |
fc5c0345 | 660 | |
d8b64af2 JA |
661 | fri = calloc(1, sizeof(*fri)); |
662 | fri->io_u = io_u; | |
663 | io_u->engine_data = fri; | |
fc5c0345 DG |
664 | return 0; |
665 | } | |
666 | ||
10aa136b | 667 | static struct ioengine_ops ioengine = { |
d9b100fc JA |
668 | .name = "rbd", |
669 | .version = FIO_IOOPS_VERSION, | |
670 | .setup = fio_rbd_setup, | |
671 | .init = fio_rbd_init, | |
672 | .queue = fio_rbd_queue, | |
673 | .getevents = fio_rbd_getevents, | |
674 | .event = fio_rbd_event, | |
675 | .cleanup = fio_rbd_cleanup, | |
676 | .open_file = fio_rbd_open, | |
677 | .invalidate = fio_rbd_invalidate, | |
678 | .options = options, | |
679 | .io_u_init = fio_rbd_io_u_init, | |
680 | .io_u_free = fio_rbd_io_u_free, | |
681 | .option_struct_size = sizeof(struct rbd_options), | |
fc5c0345 DG |
682 | }; |
683 | ||
684 | static void fio_init fio_rbd_register(void) | |
685 | { | |
686 | register_ioengine(&ioengine); | |
687 | } | |
688 | ||
689 | static void fio_exit fio_rbd_unregister(void) | |
690 | { | |
691 | unregister_ioengine(&ioengine); | |
692 | } |