Commit | Line | Data |
---|---|---|
ebac4655 JA |
1 | /* |
2 | * The io parts of the fio tool, includes workers for sync and mmap'ed | |
3 | * io, as well as both posix and linux libaio support. | |
4 | * | |
5 | * sync io is implemented on top of aio. | |
6 | * | |
7 | * This is not really specific to fio, if the get_io_u/put_io_u and | |
8 | * structures was pulled into this as well it would be a perfectly | |
9 | * generic io engine that could be used for other projects. | |
10 | * | |
11 | */ | |
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <unistd.h> | |
5c4e1dbc | 15 | #include <string.h> |
2866c82d | 16 | #include <dlfcn.h> |
ecc314ba | 17 | #include <fcntl.h> |
0c6e7517 | 18 | #include <assert.h> |
8c16d840 | 19 | |
ebac4655 | 20 | #include "fio.h" |
7c9b1bce | 21 | #include "diskutil.h" |
ebac4655 | 22 | |
01743ee1 | 23 | static FLIST_HEAD(engine_list); |
5f350952 | 24 | |
1cc954ba | 25 | static bool check_engine_ops(struct ioengine_ops *ops) |
8c16d840 | 26 | { |
5f350952 | 27 | if (ops->version != FIO_IOOPS_VERSION) { |
5ec10eaa JA |
28 | log_err("bad ioops version %d (want %d)\n", ops->version, |
29 | FIO_IOOPS_VERSION); | |
1cc954ba | 30 | return true; |
5f350952 JA |
31 | } |
32 | ||
36167d82 JA |
33 | if (!ops->queue) { |
34 | log_err("%s: no queue handler\n", ops->name); | |
1cc954ba | 35 | return true; |
36167d82 JA |
36 | } |
37 | ||
38 | /* | |
39 | * sync engines only need a ->queue() | |
40 | */ | |
41 | if (ops->flags & FIO_SYNCIO) | |
1cc954ba | 42 | return false; |
5ec10eaa | 43 | |
1cc954ba JA |
44 | if (!ops->event || !ops->getevents) { |
45 | log_err("%s: no event/getevents handler\n", ops->name); | |
46 | return true; | |
8c16d840 | 47 | } |
5ec10eaa | 48 | |
1cc954ba | 49 | return false; |
8c16d840 JA |
50 | } |
51 | ||
5f350952 | 52 | void unregister_ioengine(struct ioengine_ops *ops) |
ebac4655 | 53 | { |
ee56ad50 | 54 | dprint(FD_IO, "ioengine %s unregistered\n", ops->name); |
01743ee1 JA |
55 | flist_del(&ops->list); |
56 | INIT_FLIST_HEAD(&ops->list); | |
5f350952 JA |
57 | } |
58 | ||
b2fdda43 | 59 | void register_ioengine(struct ioengine_ops *ops) |
5f350952 | 60 | { |
ee56ad50 | 61 | dprint(FD_IO, "ioengine %s registered\n", ops->name); |
01743ee1 JA |
62 | INIT_FLIST_HEAD(&ops->list); |
63 | flist_add_tail(&ops->list, &engine_list); | |
5f350952 JA |
64 | } |
65 | ||
66 | static struct ioengine_ops *find_ioengine(const char *name) | |
67 | { | |
68 | struct ioengine_ops *ops; | |
01743ee1 | 69 | struct flist_head *entry; |
ebac4655 | 70 | |
01743ee1 JA |
71 | flist_for_each(entry, &engine_list) { |
72 | ops = flist_entry(entry, struct ioengine_ops, list); | |
bc5b77a8 | 73 | if (!strcmp(name, ops->name)) |
5f350952 JA |
74 | return ops; |
75 | } | |
76 | ||
77 | return NULL; | |
78 | } | |
79 | ||
80 | static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, | |
81 | const char *engine_lib) | |
82 | { | |
83 | struct ioengine_ops *ops; | |
84 | void *dlhandle; | |
85 | ||
ee56ad50 JA |
86 | dprint(FD_IO, "dload engine %s\n", engine_lib); |
87 | ||
2866c82d JA |
88 | dlerror(); |
89 | dlhandle = dlopen(engine_lib, RTLD_LAZY); | |
d4dbaaa8 | 90 | if (!dlhandle) { |
e1161c32 | 91 | td_vmsg(td, -1, dlerror(), "dlopen"); |
d4dbaaa8 JA |
92 | return NULL; |
93 | } | |
8756e4d4 | 94 | |
da51c050 JA |
95 | /* |
96 | * Unlike the included modules, external engines should have a | |
97 | * non-static ioengine structure that we can reference. | |
98 | */ | |
0abea0b7 DM |
99 | ops = dlsym(dlhandle, engine_lib); |
100 | if (!ops) | |
101 | ops = dlsym(dlhandle, "ioengine"); | |
a8075704 DG |
102 | |
103 | /* | |
104 | * For some external engines (like C++ ones) it is not that trivial | |
105 | * to provide a non-static ionengine structure that we can reference. | |
106 | * Instead we call a method which allocates the required ioengine | |
107 | * structure. | |
108 | */ | |
109 | if (!ops) { | |
110 | get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine"); | |
111 | ||
112 | if (get_ioengine) | |
113 | get_ioengine(&ops); | |
114 | } | |
115 | ||
d4dbaaa8 | 116 | if (!ops) { |
e1161c32 | 117 | td_vmsg(td, -1, dlerror(), "dlsym"); |
d4dbaaa8 JA |
118 | dlclose(dlhandle); |
119 | return NULL; | |
120 | } | |
8756e4d4 | 121 | |
565e784d | 122 | td->io_ops_dlhandle = dlhandle; |
5f350952 JA |
123 | return ops; |
124 | } | |
125 | ||
126 | struct ioengine_ops *load_ioengine(struct thread_data *td, const char *name) | |
127 | { | |
565e784d | 128 | struct ioengine_ops *ops; |
aa2b823c | 129 | char engine[64]; |
5f350952 | 130 | |
ee56ad50 JA |
131 | dprint(FD_IO, "load ioengine %s\n", name); |
132 | ||
087d0ed0 | 133 | engine[sizeof(engine) - 1] = '\0'; |
5f350952 JA |
134 | strncpy(engine, name, sizeof(engine) - 1); |
135 | ||
136 | /* | |
137 | * linux libaio has alias names, so convert to what we want | |
138 | */ | |
139 | if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3)) | |
140 | strcpy(engine, "libaio"); | |
141 | ||
142 | ops = find_ioengine(engine); | |
143 | if (!ops) | |
144 | ops = dlopen_ioengine(td, name); | |
145 | ||
146 | if (!ops) { | |
147 | log_err("fio: engine %s not loadable\n", name); | |
b902ceb5 JA |
148 | return NULL; |
149 | } | |
150 | ||
8c16d840 JA |
151 | /* |
152 | * Check that the required methods are there. | |
153 | */ | |
5f350952 | 154 | if (check_engine_ops(ops)) |
8c16d840 | 155 | return NULL; |
8c16d840 | 156 | |
565e784d | 157 | return ops; |
8756e4d4 JA |
158 | } |
159 | ||
de890a1e SL |
160 | /* |
161 | * For cleaning up an ioengine which never made it to init(). | |
162 | */ | |
163 | void free_ioengine(struct thread_data *td) | |
8756e4d4 | 164 | { |
de890a1e | 165 | dprint(FD_IO, "free ioengine %s\n", td->io_ops->name); |
ee56ad50 | 166 | |
de890a1e SL |
167 | if (td->eo && td->io_ops->options) { |
168 | options_free(td->io_ops->options, td->eo); | |
169 | free(td->eo); | |
170 | td->eo = NULL; | |
2992b059 | 171 | } |
b990b5c0 | 172 | |
565e784d TK |
173 | if (td->io_ops_dlhandle) |
174 | dlclose(td->io_ops_dlhandle); | |
5f350952 | 175 | |
84585003 | 176 | td->io_ops = NULL; |
b990b5c0 | 177 | } |
10ba535a | 178 | |
de890a1e SL |
179 | void close_ioengine(struct thread_data *td) |
180 | { | |
181 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); | |
182 | ||
183 | if (td->io_ops->cleanup) { | |
184 | td->io_ops->cleanup(td); | |
565e784d | 185 | td->io_ops_data = NULL; |
de890a1e SL |
186 | } |
187 | ||
188 | free_ioengine(td); | |
189 | } | |
190 | ||
10ba535a JA |
191 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
192 | { | |
ee56ad50 | 193 | dprint_io_u(io_u, "prep"); |
7101d9c2 JA |
194 | fio_ro_check(td, io_u); |
195 | ||
4d4e80f2 | 196 | lock_file(td, io_u->file, io_u->ddir); |
b2bd2bd9 | 197 | |
2ba1c290 JA |
198 | if (td->io_ops->prep) { |
199 | int ret = td->io_ops->prep(td, io_u); | |
200 | ||
201 | dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret); | |
b2bd2bd9 | 202 | if (ret) |
4d4e80f2 | 203 | unlock_file(td, io_u->file); |
2ba1c290 JA |
204 | return ret; |
205 | } | |
10ba535a JA |
206 | |
207 | return 0; | |
208 | } | |
209 | ||
e7d2e616 | 210 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
1f440ece | 211 | const struct timespec *t) |
10ba535a | 212 | { |
ee56ad50 | 213 | int r = 0; |
face81b2 | 214 | |
a05d62b2 YR |
215 | /* |
216 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, | |
217 | * server side gets a message from the client | |
218 | * side that the task is finished, and | |
219 | * td->done is set to 1 after td_io_commit(). In this case, | |
220 | * there is no need to reap complete event in server side. | |
221 | */ | |
222 | if (td->done) | |
223 | return 0; | |
224 | ||
ee56ad50 JA |
225 | if (min > 0 && td->io_ops->commit) { |
226 | r = td->io_ops->commit(td); | |
face81b2 | 227 | if (r < 0) |
ee56ad50 | 228 | goto out; |
face81b2 | 229 | } |
4950421a JA |
230 | if (max > td->cur_depth) |
231 | max = td->cur_depth; | |
232 | if (min > max) | |
233 | max = min; | |
36167d82 | 234 | |
ee56ad50 | 235 | r = 0; |
4950421a | 236 | if (max && td->io_ops->getevents) |
ee56ad50 JA |
237 | r = td->io_ops->getevents(td, min, max, t); |
238 | out: | |
422f9e4b RM |
239 | if (r >= 0) { |
240 | /* | |
3fd9efbc | 241 | * Reflect that our submitted requests were retrieved with |
422f9e4b RM |
242 | * whatever OS async calls are in the underlying engine. |
243 | */ | |
244 | td->io_u_in_flight -= r; | |
838bc709 | 245 | io_u_mark_complete(td, r); |
422f9e4b | 246 | } else |
7c639b14 | 247 | td_verror(td, r, "get_events"); |
f3e11d05 | 248 | |
ee56ad50 JA |
249 | dprint(FD_IO, "getevents: %d\n", r); |
250 | return r; | |
10ba535a JA |
251 | } |
252 | ||
253 | int td_io_queue(struct thread_data *td, struct io_u *io_u) | |
254 | { | |
a9da8ab2 JA |
255 | const enum fio_ddir ddir = acct_ddir(io_u); |
256 | unsigned long buflen = io_u->xfer_buflen; | |
7e77dd02 JA |
257 | int ret; |
258 | ||
ee56ad50 | 259 | dprint_io_u(io_u, "queue"); |
7101d9c2 JA |
260 | fio_ro_check(td, io_u); |
261 | ||
0c6e7517 | 262 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
1651e431 | 263 | io_u_set(td, io_u, IO_U_F_FLIGHT); |
0c6e7517 | 264 | |
d6aed795 | 265 | assert(fio_file_open(io_u->file)); |
3d7b485f | 266 | |
bcd5abfa JA |
267 | /* |
268 | * If using a write iolog, store this entry. | |
269 | */ | |
270 | log_io_u(td, io_u); | |
271 | ||
11786802 JA |
272 | io_u->error = 0; |
273 | io_u->resid = 0; | |
274 | ||
9b87f09b | 275 | if (td_ioengine_flagged(td, FIO_SYNCIO)) { |
12d9d841 | 276 | if (fio_fill_issue_time(td)) |
9520ebb9 | 277 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
278 | |
279 | /* | |
280 | * only used for iolog | |
281 | */ | |
282 | if (td->o.read_iolog_file) | |
283 | memcpy(&td->last_issue, &io_u->issue_time, | |
5ec10eaa | 284 | sizeof(struct timeval)); |
433afcb4 JA |
285 | } |
286 | ||
a9da8ab2 JA |
287 | if (ddir_rw(ddir)) { |
288 | td->io_issues[ddir]++; | |
289 | td->io_issue_bytes[ddir] += buflen; | |
50a8ce86 | 290 | td->rate_io_issue_bytes[ddir] += buflen; |
74d6277f | 291 | } |
755200a3 | 292 | |
7e77dd02 | 293 | ret = td->io_ops->queue(td, io_u); |
5aeb77df | 294 | |
4d4e80f2 | 295 | unlock_file(td, io_u->file); |
b2bd2bd9 | 296 | |
a9da8ab2 JA |
297 | if (ret == FIO_Q_BUSY && ddir_rw(ddir)) { |
298 | td->io_issues[ddir]--; | |
299 | td->io_issue_bytes[ddir] -= buflen; | |
50a8ce86 | 300 | td->rate_io_issue_bytes[ddir] -= buflen; |
871467d9 | 301 | io_u_clear(td, io_u, IO_U_F_FLIGHT); |
cd8a19e6 JA |
302 | } |
303 | ||
39a43d34 JA |
304 | /* |
305 | * If an error was seen and the io engine didn't propagate it | |
306 | * back to 'td', do so. | |
307 | */ | |
308 | if (io_u->error && !td->error) | |
309 | td_verror(td, io_u->error, "td_io_queue"); | |
310 | ||
cb211682 JA |
311 | /* |
312 | * Add warning for O_DIRECT so that users have an easier time | |
313 | * spotting potentially bad alignment. If this triggers for the first | |
314 | * IO, then it's likely an alignment problem or because the host fs | |
315 | * does not support O_DIRECT | |
316 | */ | |
ff58fced | 317 | if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 && |
cb211682 | 318 | td->o.odirect) { |
214ac7e0 | 319 | |
cb211682 | 320 | log_info("fio: first direct IO errored. File system may not " |
44cc9c8f JA |
321 | "support direct IO, or iomem_align= is bad. Try " |
322 | "setting direct=0.\n"); | |
cb211682 JA |
323 | } |
324 | ||
77b451cc | 325 | if (!td->io_ops->commit || io_u->ddir == DDIR_TRIM) { |
838bc709 JA |
326 | io_u_mark_submit(td, 1); |
327 | io_u_mark_complete(td, 1); | |
328 | } | |
329 | ||
d8005759 | 330 | if (ret == FIO_Q_COMPLETED) { |
ff58fced | 331 | if (ddir_rw(io_u->ddir)) { |
d8005759 JA |
332 | io_u_mark_depth(td, 1); |
333 | td->ts.total_io_u[io_u->ddir]++; | |
6eaf09d6 | 334 | } |
d8005759 | 335 | } else if (ret == FIO_Q_QUEUED) { |
eb7c8ae2 JA |
336 | int r; |
337 | ||
e6727cbd JA |
338 | td->io_u_queued++; |
339 | ||
340 | if (ddir_rw(io_u->ddir)) | |
d8005759 | 341 | td->ts.total_io_u[io_u->ddir]++; |
d8005759 JA |
342 | |
343 | if (td->io_u_queued >= td->o.iodepth_batch) { | |
eb7c8ae2 JA |
344 | r = td_io_commit(td); |
345 | if (r < 0) | |
346 | return r; | |
347 | } | |
348 | } | |
cb5ab512 | 349 | |
9b87f09b | 350 | if (!td_ioengine_flagged(td, FIO_SYNCIO)) { |
12d9d841 | 351 | if (fio_fill_issue_time(td)) |
9520ebb9 | 352 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
353 | |
354 | /* | |
355 | * only used for iolog | |
356 | */ | |
357 | if (td->o.read_iolog_file) | |
358 | memcpy(&td->last_issue, &io_u->issue_time, | |
359 | sizeof(struct timeval)); | |
433afcb4 JA |
360 | } |
361 | ||
7e77dd02 | 362 | return ret; |
10ba535a | 363 | } |
8c16d840 JA |
364 | |
365 | int td_io_init(struct thread_data *td) | |
366 | { | |
eeb12160 | 367 | int ret = 0; |
8c16d840 | 368 | |
eeb12160 JA |
369 | if (td->io_ops->init) { |
370 | ret = td->io_ops->init(td); | |
5ec10eaa JA |
371 | if (ret && td->o.iodepth > 1) { |
372 | log_err("fio: io engine init failed. Perhaps try" | |
373 | " reducing io depth?\n"); | |
374 | } | |
7c973896 JA |
375 | if (!td->error) |
376 | td->error = ret; | |
eeb12160 JA |
377 | } |
378 | ||
9b87f09b | 379 | if (!ret && td_ioengine_flagged(td, FIO_NOIO)) |
046395d7 JA |
380 | td->flags |= TD_F_NOIO; |
381 | ||
eeb12160 | 382 | return ret; |
8c16d840 | 383 | } |
755200a3 JA |
384 | |
385 | int td_io_commit(struct thread_data *td) | |
386 | { | |
f3e11d05 JA |
387 | int ret; |
388 | ||
ee56ad50 JA |
389 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
390 | ||
d8005759 | 391 | if (!td->cur_depth || !td->io_u_queued) |
e1161c32 | 392 | return 0; |
cb5ab512 | 393 | |
3fd9efbc | 394 | io_u_mark_depth(td, td->io_u_queued); |
d8005759 | 395 | |
f3e11d05 JA |
396 | if (td->io_ops->commit) { |
397 | ret = td->io_ops->commit(td); | |
398 | if (ret) | |
399 | td_verror(td, -ret, "io commit"); | |
400 | } | |
3fd9efbc | 401 | |
422f9e4b RM |
402 | /* |
403 | * Reflect that events were submitted as async IO requests. | |
404 | */ | |
405 | td->io_u_in_flight += td->io_u_queued; | |
406 | td->io_u_queued = 0; | |
755200a3 JA |
407 | |
408 | return 0; | |
409 | } | |
b5af8293 JA |
410 | |
411 | int td_io_open_file(struct thread_data *td, struct fio_file *f) | |
412 | { | |
22a57ba8 JA |
413 | assert(!fio_file_open(f)); |
414 | assert(f->fd == -1); | |
415 | ||
413d6693 JA |
416 | if (td->io_ops->open_file(td, f)) { |
417 | if (td->error == EINVAL && td->o.odirect) | |
418 | log_err("fio: destination does not support O_DIRECT\n"); | |
5ec10eaa JA |
419 | if (td->error == EMFILE) { |
420 | log_err("fio: try reducing/setting openfiles (failed" | |
421 | " at %u of %u)\n", td->nr_open_files, | |
422 | td->o.nr_files); | |
423 | } | |
413d6693 | 424 | |
22a57ba8 JA |
425 | assert(f->fd == -1); |
426 | assert(!fio_file_open(f)); | |
413d6693 JA |
427 | return 1; |
428 | } | |
429 | ||
33c48814 | 430 | fio_file_reset(td, f); |
d6aed795 JA |
431 | fio_file_set_open(f); |
432 | fio_file_clear_closing(f); | |
c97bd0fa | 433 | disk_util_inc(f->du); |
d5707a35 JA |
434 | |
435 | td->nr_open_files++; | |
436 | get_file(f); | |
437 | ||
66159828 JA |
438 | if (f->filetype == FIO_TYPE_PIPE) { |
439 | if (td_random(td)) { | |
440 | log_err("fio: can't seek on pipes (no random io)\n"); | |
441 | goto err; | |
442 | } | |
443 | } | |
444 | ||
9b87f09b | 445 | if (td_ioengine_flagged(td, FIO_DISKLESSIO)) |
413d6693 JA |
446 | goto done; |
447 | ||
448 | if (td->o.invalidate_cache && file_invalidate_cache(td, f)) | |
449 | goto err; | |
450 | ||
66159828 JA |
451 | if (td->o.fadvise_hint && |
452 | (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) { | |
413d6693 JA |
453 | int flags; |
454 | ||
455 | if (td_random(td)) | |
456 | flags = POSIX_FADV_RANDOM; | |
457 | else | |
458 | flags = POSIX_FADV_SEQUENTIAL; | |
459 | ||
ecc314ba | 460 | if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) { |
413d6693 JA |
461 | td_verror(td, errno, "fadvise"); |
462 | goto err; | |
463 | } | |
7bb48f84 | 464 | } |
37659335 JA |
465 | #ifdef FIO_HAVE_STREAMID |
466 | if (td->o.fadvise_stream && | |
467 | (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) { | |
468 | off_t stream = td->o.fadvise_stream; | |
469 | ||
470 | if (posix_fadvise(f->fd, stream, f->io_size, POSIX_FADV_STREAMID) < 0) { | |
471 | td_verror(td, errno, "fadvise streamid"); | |
472 | goto err; | |
473 | } | |
474 | } | |
475 | #endif | |
a978ba68 | 476 | |
e116f2b9 JA |
477 | #ifdef FIO_OS_DIRECTIO |
478 | /* | |
479 | * Some OS's have a distinct call to mark the file non-buffered, | |
480 | * instead of using O_DIRECT (Solaris) | |
481 | */ | |
482 | if (td->o.odirect) { | |
483 | int ret = fio_set_odirect(f->fd); | |
484 | ||
485 | if (ret) { | |
486 | td_verror(td, ret, "fio_set_odirect"); | |
42f1ee68 SZ |
487 | if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */ |
488 | log_err("fio: doing directIO to RAW devices or ZFS not supported\n"); | |
489 | } else { | |
490 | log_err("fio: the file system does not seem to support direct IO\n"); | |
491 | } | |
492 | ||
e116f2b9 JA |
493 | goto err; |
494 | } | |
495 | } | |
496 | #endif | |
497 | ||
413d6693 | 498 | done: |
f29b25a3 | 499 | log_file(td, f, FIO_LOG_OPEN_FILE); |
413d6693 JA |
500 | return 0; |
501 | err: | |
c97bd0fa | 502 | disk_util_dec(f->du); |
b284075a JA |
503 | if (td->io_ops->close_file) |
504 | td->io_ops->close_file(td, f); | |
7bb48f84 | 505 | return 1; |
b5af8293 JA |
506 | } |
507 | ||
6977bcd0 | 508 | int td_io_close_file(struct thread_data *td, struct fio_file *f) |
b5af8293 | 509 | { |
d6aed795 | 510 | if (!fio_file_closing(f)) |
f29b25a3 JA |
511 | log_file(td, f, FIO_LOG_CLOSE_FILE); |
512 | ||
0ad920e7 JA |
513 | /* |
514 | * mark as closing, do real close when last io on it has completed | |
515 | */ | |
d6aed795 | 516 | fio_file_set_closing(f); |
0ad920e7 | 517 | |
c97bd0fa | 518 | disk_util_dec(f->du); |
cba5243b JA |
519 | |
520 | if (td->o.file_lock_mode != FILE_LOCK_NONE) | |
521 | unlock_file_all(td, f); | |
29c1349f | 522 | |
6977bcd0 | 523 | return put_file(td, f); |
b5af8293 | 524 | } |
df9c26b1 | 525 | |
38ef9c90 CF |
526 | int td_io_unlink_file(struct thread_data *td, struct fio_file *f) |
527 | { | |
528 | if (td->io_ops->unlink_file) | |
529 | return td->io_ops->unlink_file(td, f); | |
2442c935 JA |
530 | else { |
531 | int ret; | |
532 | ||
533 | ret = unlink(f->file_name); | |
534 | if (ret < 0) | |
535 | return errno; | |
536 | ||
537 | return 0; | |
538 | } | |
38ef9c90 CF |
539 | } |
540 | ||
df9c26b1 JA |
541 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
542 | { | |
543 | if (!td->io_ops->get_file_size) | |
544 | return 0; | |
545 | ||
546 | return td->io_ops->get_file_size(td, f); | |
547 | } | |
44f29692 | 548 | |
effd6ff0 JA |
549 | static int do_sync_file_range(const struct thread_data *td, |
550 | struct fio_file *f) | |
44f29692 JA |
551 | { |
552 | off64_t offset, nbytes; | |
553 | ||
554 | offset = f->first_write; | |
555 | nbytes = f->last_write - f->first_write; | |
556 | ||
3843deb3 JA |
557 | if (!nbytes) |
558 | return 0; | |
44f29692 | 559 | |
3843deb3 | 560 | return sync_file_range(f->fd, offset, nbytes, td->o.sync_file_range); |
44f29692 | 561 | } |
0a28ecda | 562 | |
effd6ff0 | 563 | int do_io_u_sync(const struct thread_data *td, struct io_u *io_u) |
0a28ecda JA |
564 | { |
565 | int ret; | |
566 | ||
567 | if (io_u->ddir == DDIR_SYNC) { | |
568 | ret = fsync(io_u->file->fd); | |
569 | } else if (io_u->ddir == DDIR_DATASYNC) { | |
67bf9823 | 570 | #ifdef CONFIG_FDATASYNC |
0a28ecda JA |
571 | ret = fdatasync(io_u->file->fd); |
572 | #else | |
573 | ret = io_u->xfer_buflen; | |
574 | io_u->error = EINVAL; | |
575 | #endif | |
576 | } else if (io_u->ddir == DDIR_SYNC_FILE_RANGE) | |
577 | ret = do_sync_file_range(td, io_u->file); | |
578 | else { | |
579 | ret = io_u->xfer_buflen; | |
580 | io_u->error = EINVAL; | |
581 | } | |
582 | ||
cb849a79 JA |
583 | if (ret < 0) |
584 | io_u->error = errno; | |
585 | ||
0a28ecda JA |
586 | return ret; |
587 | } | |
a5f3027c | 588 | |
effd6ff0 | 589 | int do_io_u_trim(const struct thread_data *td, struct io_u *io_u) |
a5f3027c JA |
590 | { |
591 | #ifndef FIO_HAVE_TRIM | |
592 | io_u->error = EINVAL; | |
ff58fced | 593 | return 0; |
a5f3027c JA |
594 | #else |
595 | struct fio_file *f = io_u->file; | |
596 | int ret; | |
597 | ||
c6404a44 | 598 | ret = os_trim(f->fd, io_u->offset, io_u->xfer_buflen); |
a5f3027c | 599 | if (!ret) |
3fd9efbc | 600 | return io_u->xfer_buflen; |
a5f3027c | 601 | |
ff58fced JA |
602 | io_u->error = ret; |
603 | return 0; | |
a5f3027c JA |
604 | #endif |
605 | } | |
de890a1e SL |
606 | |
607 | int fio_show_ioengine_help(const char *engine) | |
608 | { | |
609 | struct flist_head *entry; | |
610 | struct thread_data td; | |
611 | char *sep; | |
612 | int ret = 1; | |
613 | ||
614 | if (!engine || !*engine) { | |
615 | log_info("Available IO engines:\n"); | |
616 | flist_for_each(entry, &engine_list) { | |
617 | td.io_ops = flist_entry(entry, struct ioengine_ops, | |
618 | list); | |
619 | log_info("\t%s\n", td.io_ops->name); | |
620 | } | |
621 | return 0; | |
622 | } | |
623 | sep = strchr(engine, ','); | |
624 | if (sep) { | |
625 | *sep = 0; | |
626 | sep++; | |
627 | } | |
628 | ||
629 | memset(&td, 0, sizeof(td)); | |
630 | ||
631 | td.io_ops = load_ioengine(&td, engine); | |
632 | if (!td.io_ops) { | |
633 | log_info("IO engine %s not found\n", engine); | |
634 | return 1; | |
635 | } | |
636 | ||
637 | if (td.io_ops->options) | |
638 | ret = show_cmd_help(td.io_ops->options, sep); | |
639 | else | |
640 | log_info("IO engine %s has no options\n", td.io_ops->name); | |
641 | ||
642 | free_ioengine(&td); | |
643 | ||
644 | return ret; | |
645 | } |