Commit | Line | Data |
---|---|---|
2866c82d | 1 | /* |
a31041ea | 2 | * sync/psync engine |
da751ca9 JA |
3 | * |
4 | * IO engine that does regular read(2)/write(2) with lseek(2) to transfer | |
a31041ea | 5 | * data and IO engine that does regular pread(2)/pwrite(2) to transfer data. |
2866c82d JA |
6 | * |
7 | */ | |
8 | #include <stdio.h> | |
9 | #include <stdlib.h> | |
10 | #include <unistd.h> | |
5921e80c | 11 | #include <sys/uio.h> |
2866c82d | 12 | #include <errno.h> |
5f350952 JA |
13 | |
14 | #include "../fio.h" | |
2cafffbe | 15 | #include "../optgroup.h" |
a0679ce5 | 16 | #include "../lib/rand.h" |
2866c82d | 17 | |
ef5f5a3a JA |
18 | /* |
19 | * Sync engine uses engine_data to store last offset | |
20 | */ | |
710bf9c5 | 21 | #define LAST_POS(f) ((f)->engine_pos) |
ef5f5a3a | 22 | |
1d2af02a JA |
23 | struct syncio_data { |
24 | struct iovec *iovecs; | |
25 | struct io_u **io_us; | |
26 | unsigned int queued; | |
e51cf72c | 27 | unsigned int events; |
1d2af02a JA |
28 | unsigned long queued_bytes; |
29 | ||
30 | unsigned long long last_offset; | |
31 | struct fio_file *last_file; | |
32 | enum fio_ddir last_ddir; | |
a0679ce5 SB |
33 | |
34 | struct frand_state rand_state; | |
1d2af02a JA |
35 | }; |
36 | ||
6562685f | 37 | #ifdef FIO_HAVE_PWRITEV2 |
2cafffbe JA |
38 | struct psyncv2_options { |
39 | void *pad; | |
40 | unsigned int hipri; | |
a0679ce5 | 41 | unsigned int hipri_percentage; |
2cafffbe JA |
42 | }; |
43 | ||
44 | static struct fio_option options[] = { | |
45 | { | |
46 | .name = "hipri", | |
47 | .lname = "RWF_HIPRI", | |
48 | .type = FIO_OPT_STR_SET, | |
49 | .off1 = offsetof(struct psyncv2_options, hipri), | |
50 | .help = "Set RWF_HIPRI for pwritev2/preadv2", | |
51 | .category = FIO_OPT_C_ENGINE, | |
52 | .group = FIO_OPT_G_INVALID, | |
53 | }, | |
a0679ce5 SB |
54 | { |
55 | .name = "hipri_percentage", | |
56 | .lname = "RWF_HIPRI_PERCENTAGE", | |
57 | .type = FIO_OPT_INT, | |
58 | .off1 = offsetof(struct psyncv2_options, hipri_percentage), | |
59 | .minval = 0, | |
60 | .maxval = 100, | |
61 | .def = "100", | |
62 | .help = "Probabilistically set RWF_HIPRI for pwritev2/preadv2", | |
63 | .category = FIO_OPT_C_ENGINE, | |
64 | .group = FIO_OPT_G_INVALID, | |
65 | }, | |
2cafffbe JA |
66 | { |
67 | .name = NULL, | |
68 | }, | |
69 | }; | |
70 | #endif | |
71 | ||
2866c82d JA |
72 | static int fio_syncio_prep(struct thread_data *td, struct io_u *io_u) |
73 | { | |
53cdc686 JA |
74 | struct fio_file *f = io_u->file; |
75 | ||
ff58fced | 76 | if (!ddir_rw(io_u->ddir)) |
87dc1ab1 JA |
77 | return 0; |
78 | ||
ef5f5a3a | 79 | if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset) |
e943b878 JA |
80 | return 0; |
81 | ||
53cdc686 | 82 | if (lseek(f->fd, io_u->offset, SEEK_SET) == -1) { |
e1161c32 | 83 | td_verror(td, errno, "lseek"); |
2866c82d JA |
84 | return 1; |
85 | } | |
86 | ||
87 | return 0; | |
88 | } | |
89 | ||
2bd3eabc | 90 | static int fio_io_end(struct thread_data *td, struct io_u *io_u, int ret) |
2866c82d | 91 | { |
ff58fced | 92 | if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir)) |
ef5f5a3a | 93 | LAST_POS(io_u->file) = io_u->offset + ret; |
e943b878 | 94 | |
cec6b55d | 95 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 96 | if (ret >= 0) { |
cec6b55d JA |
97 | io_u->resid = io_u->xfer_buflen - ret; |
98 | io_u->error = 0; | |
36167d82 | 99 | return FIO_Q_COMPLETED; |
2866c82d JA |
100 | } else |
101 | io_u->error = errno; | |
102 | } | |
103 | ||
bfd197cb JA |
104 | if (io_u->error) { |
105 | io_u_log_error(td, io_u); | |
e1161c32 | 106 | td_verror(td, io_u->error, "xfer"); |
bfd197cb | 107 | } |
2866c82d | 108 | |
36167d82 | 109 | return FIO_Q_COMPLETED; |
2866c82d JA |
110 | } |
111 | ||
07fc0acd | 112 | #ifdef CONFIG_PWRITEV |
2e4ef4fb JA |
113 | static enum fio_q_status fio_pvsyncio_queue(struct thread_data *td, |
114 | struct io_u *io_u) | |
07fc0acd | 115 | { |
565e784d | 116 | struct syncio_data *sd = td->io_ops_data; |
07fc0acd JA |
117 | struct iovec *iov = &sd->iovecs[0]; |
118 | struct fio_file *f = io_u->file; | |
119 | int ret; | |
120 | ||
121 | fio_ro_check(td, io_u); | |
122 | ||
123 | iov->iov_base = io_u->xfer_buf; | |
124 | iov->iov_len = io_u->xfer_buflen; | |
125 | ||
126 | if (io_u->ddir == DDIR_READ) | |
127 | ret = preadv(f->fd, iov, 1, io_u->offset); | |
128 | else if (io_u->ddir == DDIR_WRITE) | |
129 | ret = pwritev(f->fd, iov, 1, io_u->offset); | |
130 | else if (io_u->ddir == DDIR_TRIM) { | |
131 | do_io_u_trim(td, io_u); | |
132 | return FIO_Q_COMPLETED; | |
133 | } else | |
134 | ret = do_io_u_sync(td, io_u); | |
135 | ||
136 | return fio_io_end(td, io_u, ret); | |
137 | } | |
138 | #endif | |
139 | ||
6562685f | 140 | #ifdef FIO_HAVE_PWRITEV2 |
2e4ef4fb JA |
141 | static enum fio_q_status fio_pvsyncio2_queue(struct thread_data *td, |
142 | struct io_u *io_u) | |
2cafffbe | 143 | { |
565e784d | 144 | struct syncio_data *sd = td->io_ops_data; |
2cafffbe JA |
145 | struct psyncv2_options *o = td->eo; |
146 | struct iovec *iov = &sd->iovecs[0]; | |
147 | struct fio_file *f = io_u->file; | |
148 | int ret, flags = 0; | |
149 | ||
150 | fio_ro_check(td, io_u); | |
151 | ||
a0679ce5 | 152 | if (o->hipri && |
1bd5d213 | 153 | (rand_between(&sd->rand_state, 1, 100) <= o->hipri_percentage)) |
2cafffbe JA |
154 | flags |= RWF_HIPRI; |
155 | ||
156 | iov->iov_base = io_u->xfer_buf; | |
157 | iov->iov_len = io_u->xfer_buflen; | |
158 | ||
159 | if (io_u->ddir == DDIR_READ) | |
160 | ret = preadv2(f->fd, iov, 1, io_u->offset, flags); | |
161 | else if (io_u->ddir == DDIR_WRITE) | |
162 | ret = pwritev2(f->fd, iov, 1, io_u->offset, flags); | |
163 | else if (io_u->ddir == DDIR_TRIM) { | |
164 | do_io_u_trim(td, io_u); | |
165 | return FIO_Q_COMPLETED; | |
166 | } else | |
167 | ret = do_io_u_sync(td, io_u); | |
168 | ||
169 | return fio_io_end(td, io_u, ret); | |
170 | } | |
171 | #endif | |
172 | ||
2e4ef4fb JA |
173 | static enum fio_q_status fio_psyncio_queue(struct thread_data *td, |
174 | struct io_u *io_u) | |
a31041ea | 175 | { |
2bd3eabc JA |
176 | struct fio_file *f = io_u->file; |
177 | int ret; | |
178 | ||
179 | fio_ro_check(td, io_u); | |
180 | ||
181 | if (io_u->ddir == DDIR_READ) | |
182 | ret = pread(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); | |
183 | else if (io_u->ddir == DDIR_WRITE) | |
184 | ret = pwrite(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); | |
6eaf09d6 SL |
185 | else if (io_u->ddir == DDIR_TRIM) { |
186 | do_io_u_trim(td, io_u); | |
187 | return FIO_Q_COMPLETED; | |
188 | } else | |
0a28ecda | 189 | ret = do_io_u_sync(td, io_u); |
2bd3eabc JA |
190 | |
191 | return fio_io_end(td, io_u, ret); | |
192 | } | |
193 | ||
2e4ef4fb JA |
194 | static enum fio_q_status fio_syncio_queue(struct thread_data *td, |
195 | struct io_u *io_u) | |
2bd3eabc JA |
196 | { |
197 | struct fio_file *f = io_u->file; | |
198 | int ret; | |
199 | ||
200 | fio_ro_check(td, io_u); | |
201 | ||
202 | if (io_u->ddir == DDIR_READ) | |
203 | ret = read(f->fd, io_u->xfer_buf, io_u->xfer_buflen); | |
204 | else if (io_u->ddir == DDIR_WRITE) | |
205 | ret = write(f->fd, io_u->xfer_buf, io_u->xfer_buflen); | |
6eaf09d6 SL |
206 | else if (io_u->ddir == DDIR_TRIM) { |
207 | do_io_u_trim(td, io_u); | |
208 | return FIO_Q_COMPLETED; | |
209 | } else | |
0a28ecda | 210 | ret = do_io_u_sync(td, io_u); |
2bd3eabc JA |
211 | |
212 | return fio_io_end(td, io_u, ret); | |
a31041ea | 213 | } |
214 | ||
1d2af02a JA |
215 | static int fio_vsyncio_getevents(struct thread_data *td, unsigned int min, |
216 | unsigned int max, | |
1f440ece | 217 | const struct timespec fio_unused *t) |
1d2af02a | 218 | { |
565e784d | 219 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
220 | int ret; |
221 | ||
222 | if (min) { | |
e51cf72c JA |
223 | ret = sd->events; |
224 | sd->events = 0; | |
1d2af02a JA |
225 | } else |
226 | ret = 0; | |
227 | ||
228 | dprint(FD_IO, "vsyncio_getevents: min=%d,max=%d: %d\n", min, max, ret); | |
229 | return ret; | |
230 | } | |
231 | ||
232 | static struct io_u *fio_vsyncio_event(struct thread_data *td, int event) | |
233 | { | |
565e784d | 234 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
235 | |
236 | return sd->io_us[event]; | |
237 | } | |
238 | ||
239 | static int fio_vsyncio_append(struct thread_data *td, struct io_u *io_u) | |
240 | { | |
565e784d | 241 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a | 242 | |
5f9099ea | 243 | if (ddir_sync(io_u->ddir)) |
1d2af02a JA |
244 | return 0; |
245 | ||
246 | if (io_u->offset == sd->last_offset && io_u->file == sd->last_file && | |
247 | io_u->ddir == sd->last_ddir) | |
248 | return 1; | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | static void fio_vsyncio_set_iov(struct syncio_data *sd, struct io_u *io_u, | |
2b13e716 | 254 | int idx) |
1d2af02a | 255 | { |
2b13e716 JA |
256 | sd->io_us[idx] = io_u; |
257 | sd->iovecs[idx].iov_base = io_u->xfer_buf; | |
258 | sd->iovecs[idx].iov_len = io_u->xfer_buflen; | |
1d2af02a JA |
259 | sd->last_offset = io_u->offset + io_u->xfer_buflen; |
260 | sd->last_file = io_u->file; | |
261 | sd->last_ddir = io_u->ddir; | |
262 | sd->queued_bytes += io_u->xfer_buflen; | |
263 | sd->queued++; | |
264 | } | |
265 | ||
2e4ef4fb JA |
266 | static enum fio_q_status fio_vsyncio_queue(struct thread_data *td, |
267 | struct io_u *io_u) | |
1d2af02a | 268 | { |
565e784d | 269 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
270 | |
271 | fio_ro_check(td, io_u); | |
272 | ||
273 | if (!fio_vsyncio_append(td, io_u)) { | |
274 | dprint(FD_IO, "vsyncio_queue: no append (%d)\n", sd->queued); | |
275 | /* | |
276 | * If we can't append and have stuff queued, tell fio to | |
277 | * commit those first and then retry this io | |
278 | */ | |
279 | if (sd->queued) | |
280 | return FIO_Q_BUSY; | |
0a28ecda JA |
281 | if (ddir_sync(io_u->ddir)) { |
282 | int ret = do_io_u_sync(td, io_u); | |
283 | ||
284 | return fio_io_end(td, io_u, ret); | |
285 | } | |
cc9159c3 | 286 | |
1d2af02a JA |
287 | sd->queued = 0; |
288 | sd->queued_bytes = 0; | |
289 | fio_vsyncio_set_iov(sd, io_u, 0); | |
290 | } else { | |
291 | if (sd->queued == td->o.iodepth) { | |
292 | dprint(FD_IO, "vsyncio_queue: max depth %d\n", sd->queued); | |
293 | return FIO_Q_BUSY; | |
294 | } | |
295 | ||
296 | dprint(FD_IO, "vsyncio_queue: append\n"); | |
297 | fio_vsyncio_set_iov(sd, io_u, sd->queued); | |
298 | } | |
299 | ||
300 | dprint(FD_IO, "vsyncio_queue: depth now %d\n", sd->queued); | |
301 | return FIO_Q_QUEUED; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Check that we transferred all bytes, or saw an error, etc | |
306 | */ | |
307 | static int fio_vsyncio_end(struct thread_data *td, ssize_t bytes) | |
308 | { | |
565e784d | 309 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
310 | struct io_u *io_u; |
311 | unsigned int i; | |
312 | int err; | |
313 | ||
314 | /* | |
315 | * transferred everything, perfect | |
316 | */ | |
317 | if (bytes == sd->queued_bytes) | |
318 | return 0; | |
319 | ||
320 | err = errno; | |
321 | for (i = 0; i < sd->queued; i++) { | |
322 | io_u = sd->io_us[i]; | |
323 | ||
324 | if (bytes == -1) { | |
325 | io_u->error = err; | |
326 | } else { | |
327 | unsigned int this_io; | |
328 | ||
329 | this_io = bytes; | |
330 | if (this_io > io_u->xfer_buflen) | |
331 | this_io = io_u->xfer_buflen; | |
332 | ||
333 | io_u->resid = io_u->xfer_buflen - this_io; | |
334 | io_u->error = 0; | |
335 | bytes -= this_io; | |
336 | } | |
337 | } | |
338 | ||
339 | if (bytes == -1) { | |
340 | td_verror(td, err, "xfer vsync"); | |
341 | return -err; | |
342 | } | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | static int fio_vsyncio_commit(struct thread_data *td) | |
348 | { | |
565e784d | 349 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
350 | struct fio_file *f; |
351 | ssize_t ret; | |
352 | ||
353 | if (!sd->queued) | |
354 | return 0; | |
355 | ||
838bc709 | 356 | io_u_mark_submit(td, sd->queued); |
1d2af02a JA |
357 | f = sd->last_file; |
358 | ||
359 | if (lseek(f->fd, sd->io_us[0]->offset, SEEK_SET) == -1) { | |
360 | int err = -errno; | |
361 | ||
362 | td_verror(td, errno, "lseek"); | |
363 | return err; | |
364 | } | |
365 | ||
366 | if (sd->last_ddir == DDIR_READ) | |
367 | ret = readv(f->fd, sd->iovecs, sd->queued); | |
368 | else | |
369 | ret = writev(f->fd, sd->iovecs, sd->queued); | |
370 | ||
371 | dprint(FD_IO, "vsyncio_commit: %d\n", (int) ret); | |
e51cf72c JA |
372 | sd->events = sd->queued; |
373 | sd->queued = 0; | |
1d2af02a JA |
374 | return fio_vsyncio_end(td, ret); |
375 | } | |
376 | ||
377 | static int fio_vsyncio_init(struct thread_data *td) | |
378 | { | |
379 | struct syncio_data *sd; | |
380 | ||
381 | sd = malloc(sizeof(*sd)); | |
382 | memset(sd, 0, sizeof(*sd)); | |
383 | sd->last_offset = -1ULL; | |
384 | sd->iovecs = malloc(td->o.iodepth * sizeof(struct iovec)); | |
385 | sd->io_us = malloc(td->o.iodepth * sizeof(struct io_u *)); | |
a0679ce5 | 386 | init_rand(&sd->rand_state, 0); |
1d2af02a | 387 | |
565e784d | 388 | td->io_ops_data = sd; |
1d2af02a JA |
389 | return 0; |
390 | } | |
391 | ||
392 | static void fio_vsyncio_cleanup(struct thread_data *td) | |
393 | { | |
565e784d | 394 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a | 395 | |
02a3d83f TK |
396 | if (sd) { |
397 | free(sd->iovecs); | |
398 | free(sd->io_us); | |
399 | free(sd); | |
400 | } | |
1d2af02a JA |
401 | } |
402 | ||
a31041ea | 403 | static struct ioengine_ops ioengine_rw = { |
2866c82d JA |
404 | .name = "sync", |
405 | .version = FIO_IOOPS_VERSION, | |
2866c82d JA |
406 | .prep = fio_syncio_prep, |
407 | .queue = fio_syncio_queue, | |
b5af8293 JA |
408 | .open_file = generic_open_file, |
409 | .close_file = generic_close_file, | |
df9c26b1 | 410 | .get_file_size = generic_get_file_size, |
2866c82d JA |
411 | .flags = FIO_SYNCIO, |
412 | }; | |
5f350952 | 413 | |
a31041ea | 414 | static struct ioengine_ops ioengine_prw = { |
415 | .name = "psync", | |
416 | .version = FIO_IOOPS_VERSION, | |
2bd3eabc | 417 | .queue = fio_psyncio_queue, |
a31041ea | 418 | .open_file = generic_open_file, |
419 | .close_file = generic_close_file, | |
df9c26b1 | 420 | .get_file_size = generic_get_file_size, |
a31041ea | 421 | .flags = FIO_SYNCIO, |
422 | }; | |
423 | ||
1d2af02a JA |
424 | static struct ioengine_ops ioengine_vrw = { |
425 | .name = "vsync", | |
426 | .version = FIO_IOOPS_VERSION, | |
427 | .init = fio_vsyncio_init, | |
428 | .cleanup = fio_vsyncio_cleanup, | |
429 | .queue = fio_vsyncio_queue, | |
430 | .commit = fio_vsyncio_commit, | |
431 | .event = fio_vsyncio_event, | |
432 | .getevents = fio_vsyncio_getevents, | |
433 | .open_file = generic_open_file, | |
434 | .close_file = generic_close_file, | |
df9c26b1 | 435 | .get_file_size = generic_get_file_size, |
1d2af02a JA |
436 | .flags = FIO_SYNCIO, |
437 | }; | |
438 | ||
07fc0acd JA |
439 | #ifdef CONFIG_PWRITEV |
440 | static struct ioengine_ops ioengine_pvrw = { | |
441 | .name = "pvsync", | |
442 | .version = FIO_IOOPS_VERSION, | |
443 | .init = fio_vsyncio_init, | |
444 | .cleanup = fio_vsyncio_cleanup, | |
445 | .queue = fio_pvsyncio_queue, | |
446 | .open_file = generic_open_file, | |
447 | .close_file = generic_close_file, | |
448 | .get_file_size = generic_get_file_size, | |
449 | .flags = FIO_SYNCIO, | |
450 | }; | |
451 | #endif | |
452 | ||
6562685f | 453 | #ifdef FIO_HAVE_PWRITEV2 |
2cafffbe JA |
454 | static struct ioengine_ops ioengine_pvrw2 = { |
455 | .name = "pvsync2", | |
456 | .version = FIO_IOOPS_VERSION, | |
457 | .init = fio_vsyncio_init, | |
458 | .cleanup = fio_vsyncio_cleanup, | |
459 | .queue = fio_pvsyncio2_queue, | |
460 | .open_file = generic_open_file, | |
461 | .close_file = generic_close_file, | |
462 | .get_file_size = generic_get_file_size, | |
463 | .flags = FIO_SYNCIO, | |
464 | .options = options, | |
465 | .option_struct_size = sizeof(struct psyncv2_options), | |
466 | }; | |
467 | #endif | |
468 | ||
5f350952 JA |
469 | static void fio_init fio_syncio_register(void) |
470 | { | |
a31041ea | 471 | register_ioengine(&ioengine_rw); |
472 | register_ioengine(&ioengine_prw); | |
1d2af02a | 473 | register_ioengine(&ioengine_vrw); |
9a0ced5a | 474 | #ifdef CONFIG_PWRITEV |
07fc0acd | 475 | register_ioengine(&ioengine_pvrw); |
9a0ced5a | 476 | #endif |
6562685f | 477 | #ifdef FIO_HAVE_PWRITEV2 |
526c403d JD |
478 | register_ioengine(&ioengine_pvrw2); |
479 | #endif | |
5f350952 JA |
480 | } |
481 | ||
482 | static void fio_exit fio_syncio_unregister(void) | |
483 | { | |
a31041ea | 484 | unregister_ioengine(&ioengine_rw); |
485 | unregister_ioengine(&ioengine_prw); | |
1d2af02a | 486 | unregister_ioengine(&ioengine_vrw); |
9a0ced5a | 487 | #ifdef CONFIG_PWRITEV |
07fc0acd | 488 | unregister_ioengine(&ioengine_pvrw); |
9a0ced5a | 489 | #endif |
6562685f | 490 | #ifdef FIO_HAVE_PWRITEV2 |
526c403d JD |
491 | unregister_ioengine(&ioengine_pvrw2); |
492 | #endif | |
5f350952 | 493 | } |