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