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; | |
14 | int io_complete; | |
15 | }; | |
16 | ||
17 | struct rbd_data { | |
18 | rados_t cluster; | |
19 | rados_ioctx_t io_ctx; | |
20 | rbd_image_t image; | |
21 | struct io_u **aio_events; | |
22 | }; | |
23 | ||
24 | struct rbd_options { | |
25 | struct thread_data *td; | |
26 | char *rbd_name; | |
27 | char *pool_name; | |
28 | char *client_name; | |
29 | }; | |
30 | ||
31 | static struct fio_option options[] = { | |
32 | { | |
33 | .name = "rbdname", | |
34 | .lname = "rbd engine rbdname", | |
35 | .type = FIO_OPT_STR_STORE, | |
36 | .help = "RBD name for RBD engine", | |
37 | .off1 = offsetof(struct rbd_options, rbd_name), | |
38 | .category = FIO_OPT_C_ENGINE, | |
39 | .group = FIO_OPT_G_RBD, | |
40 | }, | |
41 | { | |
42 | .name = "pool", | |
43 | .lname = "rbd engine pool", | |
44 | .type = FIO_OPT_STR_STORE, | |
45 | .help = "Name of the pool hosting the RBD for the RBD engine", | |
46 | .off1 = offsetof(struct rbd_options, pool_name), | |
47 | .category = FIO_OPT_C_ENGINE, | |
48 | .group = FIO_OPT_G_RBD, | |
49 | }, | |
50 | { | |
51 | .name = "clientname", | |
52 | .lname = "rbd engine clientname", | |
53 | .type = FIO_OPT_STR_STORE, | |
54 | .help = "Name of the ceph client to access the RBD for the RBD engine", | |
55 | .off1 = offsetof(struct rbd_options, client_name), | |
56 | .category = FIO_OPT_C_ENGINE, | |
57 | .group = FIO_OPT_G_RBD, | |
58 | }, | |
59 | { | |
60 | .name = NULL, | |
61 | }, | |
62 | }; | |
63 | ||
64 | static int _fio_setup_rbd_data(struct thread_data *td, | |
65 | struct rbd_data **rbd_data_ptr) | |
66 | { | |
67 | struct rbd_data *rbd_data; | |
68 | ||
69 | if (td->io_ops->data) | |
70 | return 0; | |
71 | ||
72 | rbd_data = malloc(sizeof(struct rbd_data)); | |
73 | if (!rbd_data) | |
74 | goto failed; | |
75 | ||
76 | memset(rbd_data, 0, sizeof(struct rbd_data)); | |
77 | ||
78 | rbd_data->aio_events = malloc(td->o.iodepth * sizeof(struct io_u *)); | |
79 | if (!rbd_data->aio_events) | |
80 | goto failed; | |
81 | ||
82 | memset(rbd_data->aio_events, 0, td->o.iodepth * sizeof(struct io_u *)); | |
83 | ||
84 | *rbd_data_ptr = rbd_data; | |
85 | ||
86 | return 0; | |
87 | ||
88 | failed: | |
89 | return 1; | |
90 | ||
91 | } | |
92 | ||
93 | static int _fio_rbd_connect(struct thread_data *td) | |
94 | { | |
95 | struct rbd_data *rbd_data = td->io_ops->data; | |
96 | struct rbd_options *o = td->eo; | |
97 | int r; | |
98 | ||
99 | r = rados_create(&(rbd_data->cluster), o->client_name); | |
100 | if (r < 0) { | |
101 | log_err("rados_create failed.\n"); | |
102 | goto failed_early; | |
103 | } | |
104 | ||
105 | r = rados_conf_read_file(rbd_data->cluster, NULL); | |
106 | if (r < 0) { | |
107 | log_err("rados_conf_read_file failed.\n"); | |
108 | goto failed_early; | |
109 | } | |
110 | ||
111 | r = rados_connect(rbd_data->cluster); | |
112 | if (r < 0) { | |
113 | log_err("rados_connect failed.\n"); | |
114 | goto failed_shutdown; | |
115 | } | |
116 | ||
117 | r = rados_ioctx_create(rbd_data->cluster, o->pool_name, | |
118 | &(rbd_data->io_ctx)); | |
119 | if (r < 0) { | |
120 | log_err("rados_ioctx_create failed.\n"); | |
121 | goto failed_shutdown; | |
122 | } | |
123 | ||
124 | r = rbd_open(rbd_data->io_ctx, o->rbd_name, &(rbd_data->image), | |
125 | NULL /*snap */ ); | |
126 | if (r < 0) { | |
127 | log_err("rbd_open failed.\n"); | |
128 | goto failed_open; | |
129 | } | |
130 | return 0; | |
131 | ||
132 | failed_open: | |
133 | rados_ioctx_destroy(rbd_data->io_ctx); | |
134 | failed_shutdown: | |
135 | rados_shutdown(rbd_data->cluster); | |
136 | failed_early: | |
137 | return 1; | |
138 | } | |
139 | ||
140 | static void _fio_rbd_disconnect(struct rbd_data *rbd_data) | |
141 | { | |
142 | if (!rbd_data) | |
143 | return; | |
144 | ||
145 | /* shutdown everything */ | |
146 | if (rbd_data->image) { | |
147 | rbd_close(rbd_data->image); | |
148 | rbd_data->image = NULL; | |
149 | } | |
150 | ||
151 | if (rbd_data->io_ctx) { | |
152 | rados_ioctx_destroy(rbd_data->io_ctx); | |
153 | rbd_data->io_ctx = NULL; | |
154 | } | |
155 | ||
156 | if (rbd_data->cluster) { | |
157 | rados_shutdown(rbd_data->cluster); | |
158 | rbd_data->cluster = NULL; | |
159 | } | |
160 | } | |
161 | ||
162 | static void _fio_rbd_finish_write_aiocb(rbd_completion_t comp, void *data) | |
163 | { | |
164 | struct io_u *io_u = (struct io_u *)data; | |
165 | struct fio_rbd_iou *fio_rbd_iou = | |
166 | (struct fio_rbd_iou *)io_u->engine_data; | |
167 | ||
168 | fio_rbd_iou->io_complete = 1; | |
169 | ||
170 | /* if write needs to be verified - we should not release comp here | |
171 | without fetching the result */ | |
172 | ||
173 | rbd_aio_release(comp); | |
174 | /* TODO handle error */ | |
175 | ||
176 | return; | |
177 | } | |
178 | ||
179 | static void _fio_rbd_finish_read_aiocb(rbd_completion_t comp, void *data) | |
180 | { | |
181 | struct io_u *io_u = (struct io_u *)data; | |
182 | struct fio_rbd_iou *fio_rbd_iou = | |
183 | (struct fio_rbd_iou *)io_u->engine_data; | |
184 | ||
185 | fio_rbd_iou->io_complete = 1; | |
186 | ||
187 | /* if read needs to be verified - we should not release comp here | |
188 | without fetching the result */ | |
189 | rbd_aio_release(comp); | |
190 | ||
191 | /* TODO handle error */ | |
192 | ||
193 | return; | |
194 | } | |
195 | ||
196 | static struct io_u *fio_rbd_event(struct thread_data *td, int event) | |
197 | { | |
198 | struct rbd_data *rbd_data = td->io_ops->data; | |
199 | ||
200 | return rbd_data->aio_events[event]; | |
201 | } | |
202 | ||
203 | static int fio_rbd_getevents(struct thread_data *td, unsigned int min, | |
204 | unsigned int max, struct timespec *t) | |
205 | { | |
206 | struct rbd_data *rbd_data = td->io_ops->data; | |
207 | unsigned int events = 0; | |
208 | struct io_u *io_u; | |
209 | int i; | |
210 | struct fio_rbd_iou *fov; | |
211 | ||
212 | do { | |
213 | io_u_qiter(&td->io_u_all, io_u, i) { | |
214 | if (!(io_u->flags & IO_U_F_FLIGHT)) | |
215 | continue; | |
216 | ||
217 | fov = (struct fio_rbd_iou *)io_u->engine_data; | |
218 | ||
219 | if (fov->io_complete) { | |
220 | fov->io_complete = 0; | |
221 | rbd_data->aio_events[events] = io_u; | |
222 | events++; | |
223 | } | |
224 | ||
225 | } | |
226 | if (events < min) | |
227 | usleep(100); | |
228 | else | |
229 | break; | |
230 | ||
231 | } while (1); | |
232 | ||
233 | return events; | |
234 | } | |
235 | ||
236 | static int fio_rbd_queue(struct thread_data *td, struct io_u *io_u) | |
237 | { | |
238 | int r = -1; | |
239 | struct rbd_data *rbd_data = td->io_ops->data; | |
240 | rbd_completion_t comp; | |
241 | ||
242 | fio_ro_check(td, io_u); | |
243 | ||
244 | if (io_u->ddir == DDIR_WRITE) { | |
245 | r = rbd_aio_create_completion(io_u, | |
246 | (rbd_callback_t) | |
247 | _fio_rbd_finish_write_aiocb, | |
248 | &comp); | |
249 | if (r < 0) { | |
250 | log_err | |
251 | ("rbd_aio_create_completion for DDIR_WRITE failed.\n"); | |
252 | goto failed; | |
253 | } | |
254 | ||
255 | r = rbd_aio_write(rbd_data->image, io_u->offset, | |
256 | io_u->xfer_buflen, io_u->xfer_buf, comp); | |
257 | if (r < 0) { | |
258 | log_err("rbd_aio_write failed.\n"); | |
259 | goto failed; | |
260 | } | |
261 | ||
262 | } else if (io_u->ddir == DDIR_READ) { | |
263 | r = rbd_aio_create_completion(io_u, | |
264 | (rbd_callback_t) | |
265 | _fio_rbd_finish_read_aiocb, | |
266 | &comp); | |
267 | if (r < 0) { | |
268 | log_err | |
269 | ("rbd_aio_create_completion for DDIR_READ failed.\n"); | |
270 | goto failed; | |
271 | } | |
272 | ||
273 | r = rbd_aio_read(rbd_data->image, io_u->offset, | |
274 | io_u->xfer_buflen, io_u->xfer_buf, comp); | |
275 | ||
276 | if (r < 0) { | |
277 | log_err("rbd_aio_read failed.\n"); | |
278 | goto failed; | |
279 | } | |
280 | ||
281 | } else if (io_u->ddir == DDIR_SYNC) { | |
282 | r = rbd_flush(rbd_data->image); | |
283 | if (r < 0) { | |
284 | log_err("rbd_flush failed.\n"); | |
285 | goto failed; | |
286 | } | |
287 | ||
288 | return FIO_Q_COMPLETED; | |
289 | } else { | |
290 | dprint(FD_IO, "%s: Warning: unhandled ddir: %d\n", __func__, | |
291 | io_u->ddir); | |
292 | return FIO_Q_COMPLETED; | |
293 | } | |
294 | ||
295 | return FIO_Q_QUEUED; | |
296 | ||
297 | failed: | |
298 | io_u->error = r; | |
299 | td_verror(td, io_u->error, "xfer"); | |
300 | return FIO_Q_COMPLETED; | |
301 | } | |
302 | ||
303 | static int fio_rbd_init(struct thread_data *td) | |
304 | { | |
305 | int r; | |
306 | ||
307 | r = _fio_rbd_connect(td); | |
308 | if (r) { | |
309 | log_err("fio_rbd_connect failed, return code: %d .\n", r); | |
310 | goto failed; | |
311 | } | |
312 | ||
313 | return 0; | |
314 | ||
315 | failed: | |
316 | return 1; | |
317 | ||
318 | } | |
319 | ||
320 | static void fio_rbd_cleanup(struct thread_data *td) | |
321 | { | |
322 | struct rbd_data *rbd_data = td->io_ops->data; | |
323 | ||
324 | if (rbd_data) { | |
325 | _fio_rbd_disconnect(rbd_data); | |
326 | free(rbd_data->aio_events); | |
327 | free(rbd_data); | |
328 | } | |
329 | ||
330 | } | |
331 | ||
332 | static int fio_rbd_setup(struct thread_data *td) | |
333 | { | |
334 | int r = 0; | |
335 | rbd_image_info_t info; | |
336 | struct fio_file *f; | |
337 | struct rbd_data *rbd_data = NULL; | |
338 | int major, minor, extra; | |
339 | ||
340 | /* log version of librbd. No cluster connection required. */ | |
341 | rbd_version(&major, &minor, &extra); | |
342 | log_info("rbd engine: RBD version: %d.%d.%d\n", major, minor, extra); | |
343 | ||
344 | /* allocate engine specific structure to deal with librbd. */ | |
345 | r = _fio_setup_rbd_data(td, &rbd_data); | |
346 | if (r) { | |
347 | log_err("fio_setup_rbd_data failed.\n"); | |
348 | goto cleanup; | |
349 | } | |
350 | td->io_ops->data = rbd_data; | |
351 | ||
352 | /* librbd does not allow us to run first in the main thread and later in a | |
353 | * fork child. It needs to be the same process context all the time. | |
354 | */ | |
355 | td->o.use_thread = 1; | |
356 | ||
357 | /* connect in the main thread to determine to determine | |
358 | * the size of the given RADOS block device. And disconnect | |
359 | * later on. | |
360 | */ | |
361 | r = _fio_rbd_connect(td); | |
362 | if (r) { | |
363 | log_err("fio_rbd_connect failed.\n"); | |
364 | goto cleanup; | |
365 | } | |
366 | ||
367 | /* get size of the RADOS block device */ | |
368 | r = rbd_stat(rbd_data->image, &info, sizeof(info)); | |
369 | if (r < 0) { | |
370 | log_err("rbd_status failed.\n"); | |
371 | goto disconnect; | |
372 | } | |
373 | dprint(FD_IO, "rbd-engine: image size: %lu\n", info.size); | |
374 | ||
375 | /* taken from "net" engine. Pretend we deal with files, | |
376 | * even if we do not have any ideas about files. | |
377 | * The size of the RBD is set instead of a artificial file. | |
378 | */ | |
379 | if (!td->files_index) { | |
5903e7b7 | 380 | add_file(td, td->o.filename ? : "rbd", 0, 0); |
fc5c0345 | 381 | td->o.nr_files = td->o.nr_files ? : 1; |
b53f2c54 | 382 | td->o.open_files++; |
fc5c0345 DG |
383 | } |
384 | f = td->files[0]; | |
385 | f->real_file_size = info.size; | |
386 | ||
387 | /* disconnect, then we were only connected to determine | |
388 | * the size of the RBD. | |
389 | */ | |
390 | _fio_rbd_disconnect(rbd_data); | |
391 | return 0; | |
392 | ||
393 | disconnect: | |
394 | _fio_rbd_disconnect(rbd_data); | |
395 | cleanup: | |
396 | fio_rbd_cleanup(td); | |
397 | return r; | |
398 | } | |
399 | ||
400 | static int fio_rbd_open(struct thread_data *td, struct fio_file *f) | |
401 | { | |
402 | return 0; | |
403 | } | |
404 | ||
405 | static void fio_rbd_io_u_free(struct thread_data *td, struct io_u *io_u) | |
406 | { | |
407 | struct fio_rbd_iou *o = io_u->engine_data; | |
408 | ||
409 | if (o) { | |
410 | io_u->engine_data = NULL; | |
411 | free(o); | |
412 | } | |
413 | } | |
414 | ||
415 | static int fio_rbd_io_u_init(struct thread_data *td, struct io_u *io_u) | |
416 | { | |
417 | struct fio_rbd_iou *o; | |
418 | ||
419 | o = malloc(sizeof(*o)); | |
420 | o->io_complete = 0; | |
421 | o->io_u = io_u; | |
422 | io_u->engine_data = o; | |
423 | return 0; | |
424 | } | |
425 | ||
10aa136b | 426 | static struct ioengine_ops ioengine = { |
fc5c0345 DG |
427 | .name = "rbd", |
428 | .version = FIO_IOOPS_VERSION, | |
429 | .setup = fio_rbd_setup, | |
430 | .init = fio_rbd_init, | |
431 | .queue = fio_rbd_queue, | |
432 | .getevents = fio_rbd_getevents, | |
433 | .event = fio_rbd_event, | |
434 | .cleanup = fio_rbd_cleanup, | |
435 | .open_file = fio_rbd_open, | |
436 | .options = options, | |
437 | .io_u_init = fio_rbd_io_u_init, | |
438 | .io_u_free = fio_rbd_io_u_free, | |
439 | .option_struct_size = sizeof(struct rbd_options), | |
440 | }; | |
441 | ||
442 | static void fio_init fio_rbd_register(void) | |
443 | { | |
444 | register_ioengine(&ioengine); | |
445 | } | |
446 | ||
447 | static void fio_exit fio_rbd_unregister(void) | |
448 | { | |
449 | unregister_ioengine(&ioengine); | |
450 | } |