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 JA |
112 | #ifdef CONFIG_PWRITEV |
113 | static int fio_pvsyncio_queue(struct thread_data *td, struct io_u *io_u) | |
114 | { | |
565e784d | 115 | struct syncio_data *sd = td->io_ops_data; |
07fc0acd JA |
116 | struct iovec *iov = &sd->iovecs[0]; |
117 | struct fio_file *f = io_u->file; | |
118 | int ret; | |
119 | ||
120 | fio_ro_check(td, io_u); | |
121 | ||
122 | iov->iov_base = io_u->xfer_buf; | |
123 | iov->iov_len = io_u->xfer_buflen; | |
124 | ||
125 | if (io_u->ddir == DDIR_READ) | |
126 | ret = preadv(f->fd, iov, 1, io_u->offset); | |
127 | else if (io_u->ddir == DDIR_WRITE) | |
128 | ret = pwritev(f->fd, iov, 1, io_u->offset); | |
129 | else if (io_u->ddir == DDIR_TRIM) { | |
130 | do_io_u_trim(td, io_u); | |
131 | return FIO_Q_COMPLETED; | |
132 | } else | |
133 | ret = do_io_u_sync(td, io_u); | |
134 | ||
135 | return fio_io_end(td, io_u, ret); | |
136 | } | |
137 | #endif | |
138 | ||
6562685f | 139 | #ifdef FIO_HAVE_PWRITEV2 |
2cafffbe JA |
140 | static int fio_pvsyncio2_queue(struct thread_data *td, struct io_u *io_u) |
141 | { | |
565e784d | 142 | struct syncio_data *sd = td->io_ops_data; |
2cafffbe JA |
143 | struct psyncv2_options *o = td->eo; |
144 | struct iovec *iov = &sd->iovecs[0]; | |
145 | struct fio_file *f = io_u->file; | |
146 | int ret, flags = 0; | |
147 | ||
148 | fio_ro_check(td, io_u); | |
149 | ||
a0679ce5 SB |
150 | if (o->hipri && |
151 | (rand32_between(&sd->rand_state, 1, 100) <= o->hipri_percentage)) | |
2cafffbe JA |
152 | flags |= RWF_HIPRI; |
153 | ||
154 | iov->iov_base = io_u->xfer_buf; | |
155 | iov->iov_len = io_u->xfer_buflen; | |
156 | ||
157 | if (io_u->ddir == DDIR_READ) | |
158 | ret = preadv2(f->fd, iov, 1, io_u->offset, flags); | |
159 | else if (io_u->ddir == DDIR_WRITE) | |
160 | ret = pwritev2(f->fd, iov, 1, io_u->offset, flags); | |
161 | else if (io_u->ddir == DDIR_TRIM) { | |
162 | do_io_u_trim(td, io_u); | |
163 | return FIO_Q_COMPLETED; | |
164 | } else | |
165 | ret = do_io_u_sync(td, io_u); | |
166 | ||
167 | return fio_io_end(td, io_u, ret); | |
168 | } | |
169 | #endif | |
170 | ||
171 | ||
2bd3eabc | 172 | static int fio_psyncio_queue(struct thread_data *td, struct io_u *io_u) |
a31041ea | 173 | { |
2bd3eabc JA |
174 | struct fio_file *f = io_u->file; |
175 | int ret; | |
176 | ||
177 | fio_ro_check(td, io_u); | |
178 | ||
179 | if (io_u->ddir == DDIR_READ) | |
180 | ret = pread(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); | |
181 | else if (io_u->ddir == DDIR_WRITE) | |
182 | ret = pwrite(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); | |
6eaf09d6 SL |
183 | else if (io_u->ddir == DDIR_TRIM) { |
184 | do_io_u_trim(td, io_u); | |
185 | return FIO_Q_COMPLETED; | |
186 | } else | |
0a28ecda | 187 | ret = do_io_u_sync(td, io_u); |
2bd3eabc JA |
188 | |
189 | return fio_io_end(td, io_u, ret); | |
190 | } | |
191 | ||
192 | static int fio_syncio_queue(struct thread_data *td, struct io_u *io_u) | |
193 | { | |
194 | struct fio_file *f = io_u->file; | |
195 | int ret; | |
196 | ||
197 | fio_ro_check(td, io_u); | |
198 | ||
199 | if (io_u->ddir == DDIR_READ) | |
200 | ret = read(f->fd, io_u->xfer_buf, io_u->xfer_buflen); | |
201 | else if (io_u->ddir == DDIR_WRITE) | |
202 | ret = write(f->fd, io_u->xfer_buf, io_u->xfer_buflen); | |
6eaf09d6 SL |
203 | else if (io_u->ddir == DDIR_TRIM) { |
204 | do_io_u_trim(td, io_u); | |
205 | return FIO_Q_COMPLETED; | |
206 | } else | |
0a28ecda | 207 | ret = do_io_u_sync(td, io_u); |
2bd3eabc JA |
208 | |
209 | return fio_io_end(td, io_u, ret); | |
a31041ea | 210 | } |
211 | ||
1d2af02a JA |
212 | static int fio_vsyncio_getevents(struct thread_data *td, unsigned int min, |
213 | unsigned int max, | |
1f440ece | 214 | const struct timespec fio_unused *t) |
1d2af02a | 215 | { |
565e784d | 216 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
217 | int ret; |
218 | ||
219 | if (min) { | |
e51cf72c JA |
220 | ret = sd->events; |
221 | sd->events = 0; | |
1d2af02a JA |
222 | } else |
223 | ret = 0; | |
224 | ||
225 | dprint(FD_IO, "vsyncio_getevents: min=%d,max=%d: %d\n", min, max, ret); | |
226 | return ret; | |
227 | } | |
228 | ||
229 | static struct io_u *fio_vsyncio_event(struct thread_data *td, int event) | |
230 | { | |
565e784d | 231 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
232 | |
233 | return sd->io_us[event]; | |
234 | } | |
235 | ||
236 | static int fio_vsyncio_append(struct thread_data *td, struct io_u *io_u) | |
237 | { | |
565e784d | 238 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a | 239 | |
5f9099ea | 240 | if (ddir_sync(io_u->ddir)) |
1d2af02a JA |
241 | return 0; |
242 | ||
243 | if (io_u->offset == sd->last_offset && io_u->file == sd->last_file && | |
244 | io_u->ddir == sd->last_ddir) | |
245 | return 1; | |
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
250 | static void fio_vsyncio_set_iov(struct syncio_data *sd, struct io_u *io_u, | |
2b13e716 | 251 | int idx) |
1d2af02a | 252 | { |
2b13e716 JA |
253 | sd->io_us[idx] = io_u; |
254 | sd->iovecs[idx].iov_base = io_u->xfer_buf; | |
255 | sd->iovecs[idx].iov_len = io_u->xfer_buflen; | |
1d2af02a JA |
256 | sd->last_offset = io_u->offset + io_u->xfer_buflen; |
257 | sd->last_file = io_u->file; | |
258 | sd->last_ddir = io_u->ddir; | |
259 | sd->queued_bytes += io_u->xfer_buflen; | |
260 | sd->queued++; | |
261 | } | |
262 | ||
263 | static int fio_vsyncio_queue(struct thread_data *td, struct io_u *io_u) | |
264 | { | |
565e784d | 265 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
266 | |
267 | fio_ro_check(td, io_u); | |
268 | ||
269 | if (!fio_vsyncio_append(td, io_u)) { | |
270 | dprint(FD_IO, "vsyncio_queue: no append (%d)\n", sd->queued); | |
271 | /* | |
272 | * If we can't append and have stuff queued, tell fio to | |
273 | * commit those first and then retry this io | |
274 | */ | |
275 | if (sd->queued) | |
276 | return FIO_Q_BUSY; | |
0a28ecda JA |
277 | if (ddir_sync(io_u->ddir)) { |
278 | int ret = do_io_u_sync(td, io_u); | |
279 | ||
280 | return fio_io_end(td, io_u, ret); | |
281 | } | |
cc9159c3 | 282 | |
1d2af02a JA |
283 | sd->queued = 0; |
284 | sd->queued_bytes = 0; | |
285 | fio_vsyncio_set_iov(sd, io_u, 0); | |
286 | } else { | |
287 | if (sd->queued == td->o.iodepth) { | |
288 | dprint(FD_IO, "vsyncio_queue: max depth %d\n", sd->queued); | |
289 | return FIO_Q_BUSY; | |
290 | } | |
291 | ||
292 | dprint(FD_IO, "vsyncio_queue: append\n"); | |
293 | fio_vsyncio_set_iov(sd, io_u, sd->queued); | |
294 | } | |
295 | ||
296 | dprint(FD_IO, "vsyncio_queue: depth now %d\n", sd->queued); | |
297 | return FIO_Q_QUEUED; | |
298 | } | |
299 | ||
300 | /* | |
301 | * Check that we transferred all bytes, or saw an error, etc | |
302 | */ | |
303 | static int fio_vsyncio_end(struct thread_data *td, ssize_t bytes) | |
304 | { | |
565e784d | 305 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
306 | struct io_u *io_u; |
307 | unsigned int i; | |
308 | int err; | |
309 | ||
310 | /* | |
311 | * transferred everything, perfect | |
312 | */ | |
313 | if (bytes == sd->queued_bytes) | |
314 | return 0; | |
315 | ||
316 | err = errno; | |
317 | for (i = 0; i < sd->queued; i++) { | |
318 | io_u = sd->io_us[i]; | |
319 | ||
320 | if (bytes == -1) { | |
321 | io_u->error = err; | |
322 | } else { | |
323 | unsigned int this_io; | |
324 | ||
325 | this_io = bytes; | |
326 | if (this_io > io_u->xfer_buflen) | |
327 | this_io = io_u->xfer_buflen; | |
328 | ||
329 | io_u->resid = io_u->xfer_buflen - this_io; | |
330 | io_u->error = 0; | |
331 | bytes -= this_io; | |
332 | } | |
333 | } | |
334 | ||
335 | if (bytes == -1) { | |
336 | td_verror(td, err, "xfer vsync"); | |
337 | return -err; | |
338 | } | |
339 | ||
340 | return 0; | |
341 | } | |
342 | ||
343 | static int fio_vsyncio_commit(struct thread_data *td) | |
344 | { | |
565e784d | 345 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
346 | struct fio_file *f; |
347 | ssize_t ret; | |
348 | ||
349 | if (!sd->queued) | |
350 | return 0; | |
351 | ||
838bc709 | 352 | io_u_mark_submit(td, sd->queued); |
1d2af02a JA |
353 | f = sd->last_file; |
354 | ||
355 | if (lseek(f->fd, sd->io_us[0]->offset, SEEK_SET) == -1) { | |
356 | int err = -errno; | |
357 | ||
358 | td_verror(td, errno, "lseek"); | |
359 | return err; | |
360 | } | |
361 | ||
362 | if (sd->last_ddir == DDIR_READ) | |
363 | ret = readv(f->fd, sd->iovecs, sd->queued); | |
364 | else | |
365 | ret = writev(f->fd, sd->iovecs, sd->queued); | |
366 | ||
367 | dprint(FD_IO, "vsyncio_commit: %d\n", (int) ret); | |
e51cf72c JA |
368 | sd->events = sd->queued; |
369 | sd->queued = 0; | |
1d2af02a JA |
370 | return fio_vsyncio_end(td, ret); |
371 | } | |
372 | ||
373 | static int fio_vsyncio_init(struct thread_data *td) | |
374 | { | |
375 | struct syncio_data *sd; | |
376 | ||
377 | sd = malloc(sizeof(*sd)); | |
378 | memset(sd, 0, sizeof(*sd)); | |
379 | sd->last_offset = -1ULL; | |
380 | sd->iovecs = malloc(td->o.iodepth * sizeof(struct iovec)); | |
381 | sd->io_us = malloc(td->o.iodepth * sizeof(struct io_u *)); | |
a0679ce5 | 382 | init_rand(&sd->rand_state, 0); |
1d2af02a | 383 | |
565e784d | 384 | td->io_ops_data = sd; |
1d2af02a JA |
385 | return 0; |
386 | } | |
387 | ||
388 | static void fio_vsyncio_cleanup(struct thread_data *td) | |
389 | { | |
565e784d | 390 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a | 391 | |
02a3d83f TK |
392 | if (sd) { |
393 | free(sd->iovecs); | |
394 | free(sd->io_us); | |
395 | free(sd); | |
396 | } | |
1d2af02a JA |
397 | } |
398 | ||
a31041ea | 399 | static struct ioengine_ops ioengine_rw = { |
2866c82d JA |
400 | .name = "sync", |
401 | .version = FIO_IOOPS_VERSION, | |
2866c82d JA |
402 | .prep = fio_syncio_prep, |
403 | .queue = fio_syncio_queue, | |
b5af8293 JA |
404 | .open_file = generic_open_file, |
405 | .close_file = generic_close_file, | |
df9c26b1 | 406 | .get_file_size = generic_get_file_size, |
2866c82d JA |
407 | .flags = FIO_SYNCIO, |
408 | }; | |
5f350952 | 409 | |
a31041ea | 410 | static struct ioengine_ops ioengine_prw = { |
411 | .name = "psync", | |
412 | .version = FIO_IOOPS_VERSION, | |
2bd3eabc | 413 | .queue = fio_psyncio_queue, |
a31041ea | 414 | .open_file = generic_open_file, |
415 | .close_file = generic_close_file, | |
df9c26b1 | 416 | .get_file_size = generic_get_file_size, |
a31041ea | 417 | .flags = FIO_SYNCIO, |
418 | }; | |
419 | ||
1d2af02a JA |
420 | static struct ioengine_ops ioengine_vrw = { |
421 | .name = "vsync", | |
422 | .version = FIO_IOOPS_VERSION, | |
423 | .init = fio_vsyncio_init, | |
424 | .cleanup = fio_vsyncio_cleanup, | |
425 | .queue = fio_vsyncio_queue, | |
426 | .commit = fio_vsyncio_commit, | |
427 | .event = fio_vsyncio_event, | |
428 | .getevents = fio_vsyncio_getevents, | |
429 | .open_file = generic_open_file, | |
430 | .close_file = generic_close_file, | |
df9c26b1 | 431 | .get_file_size = generic_get_file_size, |
1d2af02a JA |
432 | .flags = FIO_SYNCIO, |
433 | }; | |
434 | ||
07fc0acd JA |
435 | #ifdef CONFIG_PWRITEV |
436 | static struct ioengine_ops ioengine_pvrw = { | |
437 | .name = "pvsync", | |
438 | .version = FIO_IOOPS_VERSION, | |
439 | .init = fio_vsyncio_init, | |
440 | .cleanup = fio_vsyncio_cleanup, | |
441 | .queue = fio_pvsyncio_queue, | |
442 | .open_file = generic_open_file, | |
443 | .close_file = generic_close_file, | |
444 | .get_file_size = generic_get_file_size, | |
445 | .flags = FIO_SYNCIO, | |
446 | }; | |
447 | #endif | |
448 | ||
6562685f | 449 | #ifdef FIO_HAVE_PWRITEV2 |
2cafffbe JA |
450 | static struct ioengine_ops ioengine_pvrw2 = { |
451 | .name = "pvsync2", | |
452 | .version = FIO_IOOPS_VERSION, | |
453 | .init = fio_vsyncio_init, | |
454 | .cleanup = fio_vsyncio_cleanup, | |
455 | .queue = fio_pvsyncio2_queue, | |
456 | .open_file = generic_open_file, | |
457 | .close_file = generic_close_file, | |
458 | .get_file_size = generic_get_file_size, | |
459 | .flags = FIO_SYNCIO, | |
460 | .options = options, | |
461 | .option_struct_size = sizeof(struct psyncv2_options), | |
462 | }; | |
463 | #endif | |
464 | ||
5f350952 JA |
465 | static void fio_init fio_syncio_register(void) |
466 | { | |
a31041ea | 467 | register_ioengine(&ioengine_rw); |
468 | register_ioengine(&ioengine_prw); | |
1d2af02a | 469 | register_ioengine(&ioengine_vrw); |
9a0ced5a | 470 | #ifdef CONFIG_PWRITEV |
07fc0acd | 471 | register_ioengine(&ioengine_pvrw); |
9a0ced5a | 472 | #endif |
6562685f | 473 | #ifdef FIO_HAVE_PWRITEV2 |
526c403d JD |
474 | register_ioengine(&ioengine_pvrw2); |
475 | #endif | |
5f350952 JA |
476 | } |
477 | ||
478 | static void fio_exit fio_syncio_unregister(void) | |
479 | { | |
a31041ea | 480 | unregister_ioengine(&ioengine_rw); |
481 | unregister_ioengine(&ioengine_prw); | |
1d2af02a | 482 | unregister_ioengine(&ioengine_vrw); |
9a0ced5a | 483 | #ifdef CONFIG_PWRITEV |
07fc0acd | 484 | unregister_ioengine(&ioengine_pvrw); |
9a0ced5a | 485 | #endif |
6562685f | 486 | #ifdef FIO_HAVE_PWRITEV2 |
526c403d JD |
487 | unregister_ioengine(&ioengine_pvrw2); |
488 | #endif | |
5f350952 | 489 | } |