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); |
adf075fa | 55 | flist_del_init(&ops->list); |
5f350952 JA |
56 | } |
57 | ||
b2fdda43 | 58 | void register_ioengine(struct ioengine_ops *ops) |
5f350952 | 59 | { |
ee56ad50 | 60 | dprint(FD_IO, "ioengine %s registered\n", ops->name); |
01743ee1 | 61 | flist_add_tail(&ops->list, &engine_list); |
5f350952 JA |
62 | } |
63 | ||
64 | static struct ioengine_ops *find_ioengine(const char *name) | |
65 | { | |
66 | struct ioengine_ops *ops; | |
01743ee1 | 67 | struct flist_head *entry; |
ebac4655 | 68 | |
01743ee1 JA |
69 | flist_for_each(entry, &engine_list) { |
70 | ops = flist_entry(entry, struct ioengine_ops, list); | |
bc5b77a8 | 71 | if (!strcmp(name, ops->name)) |
5f350952 JA |
72 | return ops; |
73 | } | |
74 | ||
75 | return NULL; | |
76 | } | |
77 | ||
78 | static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, | |
79 | const char *engine_lib) | |
80 | { | |
81 | struct ioengine_ops *ops; | |
82 | void *dlhandle; | |
83 | ||
ee56ad50 JA |
84 | dprint(FD_IO, "dload engine %s\n", engine_lib); |
85 | ||
2866c82d JA |
86 | dlerror(); |
87 | dlhandle = dlopen(engine_lib, RTLD_LAZY); | |
d4dbaaa8 | 88 | if (!dlhandle) { |
e1161c32 | 89 | td_vmsg(td, -1, dlerror(), "dlopen"); |
d4dbaaa8 JA |
90 | return NULL; |
91 | } | |
8756e4d4 | 92 | |
da51c050 JA |
93 | /* |
94 | * Unlike the included modules, external engines should have a | |
95 | * non-static ioengine structure that we can reference. | |
96 | */ | |
0abea0b7 DM |
97 | ops = dlsym(dlhandle, engine_lib); |
98 | if (!ops) | |
99 | ops = dlsym(dlhandle, "ioengine"); | |
a8075704 DG |
100 | |
101 | /* | |
102 | * For some external engines (like C++ ones) it is not that trivial | |
103 | * to provide a non-static ionengine structure that we can reference. | |
104 | * Instead we call a method which allocates the required ioengine | |
105 | * structure. | |
106 | */ | |
107 | if (!ops) { | |
108 | get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine"); | |
109 | ||
110 | if (get_ioengine) | |
111 | get_ioengine(&ops); | |
112 | } | |
113 | ||
d4dbaaa8 | 114 | if (!ops) { |
e1161c32 | 115 | td_vmsg(td, -1, dlerror(), "dlsym"); |
d4dbaaa8 JA |
116 | dlclose(dlhandle); |
117 | return NULL; | |
118 | } | |
8756e4d4 | 119 | |
565e784d | 120 | td->io_ops_dlhandle = dlhandle; |
5f350952 JA |
121 | return ops; |
122 | } | |
123 | ||
97bb54c9 TK |
124 | static struct ioengine_ops *__load_ioengine(const char *name) |
125 | { | |
126 | char engine[64]; | |
127 | ||
128 | engine[sizeof(engine) - 1] = '\0'; | |
129 | strncpy(engine, name, sizeof(engine) - 1); | |
130 | ||
131 | /* | |
132 | * linux libaio has alias names, so convert to what we want | |
133 | */ | |
966fcbd4 | 134 | if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3)) { |
135 | dprint(FD_IO, "converting ioengine name: %s -> libaio\n", name); | |
97bb54c9 | 136 | strcpy(engine, "libaio"); |
966fcbd4 | 137 | } |
97bb54c9 TK |
138 | |
139 | dprint(FD_IO, "load ioengine %s\n", engine); | |
140 | return find_ioengine(engine); | |
141 | } | |
142 | ||
4fedf59a | 143 | struct ioengine_ops *load_ioengine(struct thread_data *td) |
5f350952 | 144 | { |
81647a9a | 145 | struct ioengine_ops *ops = NULL; |
ba872a0b | 146 | const char *name; |
81647a9a | 147 | |
ba872a0b TK |
148 | /* |
149 | * Use ->ioengine_so_path if an external ioengine path is specified. | |
150 | * In this case, ->ioengine is "external" which also means the prefix | |
151 | * for external ioengines "external:" is properly used. | |
152 | */ | |
153 | name = td->o.ioengine_so_path ?: td->o.ioengine; | |
154 | ||
155 | /* | |
156 | * Try to load ->ioengine first, and if failed try to dlopen(3) either | |
157 | * ->ioengine or ->ioengine_so_path. This is redundant for an external | |
158 | * ioengine with prefix, and also leaves the possibility of unexpected | |
159 | * behavior (e.g. if the "external" ioengine exists), but we do this | |
160 | * so as not to break job files not using the prefix. | |
161 | */ | |
162 | ops = __load_ioengine(td->o.ioengine); | |
163 | if (!ops) | |
5f350952 JA |
164 | ops = dlopen_ioengine(td, name); |
165 | ||
ba872a0b TK |
166 | /* |
167 | * If ops is NULL, we failed to load ->ioengine, and also failed to | |
168 | * dlopen(3) either ->ioengine or ->ioengine_so_path as a path. | |
169 | */ | |
5f350952 JA |
170 | if (!ops) { |
171 | log_err("fio: engine %s not loadable\n", name); | |
b902ceb5 JA |
172 | return NULL; |
173 | } | |
174 | ||
8c16d840 JA |
175 | /* |
176 | * Check that the required methods are there. | |
177 | */ | |
5f350952 | 178 | if (check_engine_ops(ops)) |
8c16d840 | 179 | return NULL; |
8c16d840 | 180 | |
565e784d | 181 | return ops; |
8756e4d4 JA |
182 | } |
183 | ||
de890a1e SL |
184 | /* |
185 | * For cleaning up an ioengine which never made it to init(). | |
186 | */ | |
187 | void free_ioengine(struct thread_data *td) | |
8756e4d4 | 188 | { |
de890a1e | 189 | dprint(FD_IO, "free ioengine %s\n", td->io_ops->name); |
ee56ad50 | 190 | |
de890a1e SL |
191 | if (td->eo && td->io_ops->options) { |
192 | options_free(td->io_ops->options, td->eo); | |
193 | free(td->eo); | |
194 | td->eo = NULL; | |
2992b059 | 195 | } |
b990b5c0 | 196 | |
9b50942e | 197 | if (td->io_ops_dlhandle) { |
565e784d | 198 | dlclose(td->io_ops_dlhandle); |
9b50942e JA |
199 | td->io_ops_dlhandle = NULL; |
200 | } | |
5f350952 | 201 | |
84585003 | 202 | td->io_ops = NULL; |
b990b5c0 | 203 | } |
10ba535a | 204 | |
de890a1e SL |
205 | void close_ioengine(struct thread_data *td) |
206 | { | |
207 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); | |
208 | ||
209 | if (td->io_ops->cleanup) { | |
210 | td->io_ops->cleanup(td); | |
565e784d | 211 | td->io_ops_data = NULL; |
de890a1e SL |
212 | } |
213 | ||
214 | free_ioengine(td); | |
215 | } | |
216 | ||
10ba535a JA |
217 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
218 | { | |
ee56ad50 | 219 | dprint_io_u(io_u, "prep"); |
7101d9c2 JA |
220 | fio_ro_check(td, io_u); |
221 | ||
4d4e80f2 | 222 | lock_file(td, io_u->file, io_u->ddir); |
b2bd2bd9 | 223 | |
2ba1c290 JA |
224 | if (td->io_ops->prep) { |
225 | int ret = td->io_ops->prep(td, io_u); | |
226 | ||
e5f9a813 RE |
227 | dprint(FD_IO, "prep: io_u %p: ret=%d\n", io_u, ret); |
228 | ||
b2bd2bd9 | 229 | if (ret) |
4d4e80f2 | 230 | unlock_file(td, io_u->file); |
2ba1c290 JA |
231 | return ret; |
232 | } | |
10ba535a JA |
233 | |
234 | return 0; | |
235 | } | |
236 | ||
e7d2e616 | 237 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
1f440ece | 238 | const struct timespec *t) |
10ba535a | 239 | { |
ee56ad50 | 240 | int r = 0; |
face81b2 | 241 | |
a05d62b2 YR |
242 | /* |
243 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, | |
244 | * server side gets a message from the client | |
245 | * side that the task is finished, and | |
246 | * td->done is set to 1 after td_io_commit(). In this case, | |
247 | * there is no need to reap complete event in server side. | |
248 | */ | |
249 | if (td->done) | |
250 | return 0; | |
251 | ||
ee56ad50 JA |
252 | if (min > 0 && td->io_ops->commit) { |
253 | r = td->io_ops->commit(td); | |
face81b2 | 254 | if (r < 0) |
ee56ad50 | 255 | goto out; |
face81b2 | 256 | } |
4950421a JA |
257 | if (max > td->cur_depth) |
258 | max = td->cur_depth; | |
259 | if (min > max) | |
260 | max = min; | |
36167d82 | 261 | |
ee56ad50 | 262 | r = 0; |
4950421a | 263 | if (max && td->io_ops->getevents) |
ee56ad50 JA |
264 | r = td->io_ops->getevents(td, min, max, t); |
265 | out: | |
422f9e4b RM |
266 | if (r >= 0) { |
267 | /* | |
3fd9efbc | 268 | * Reflect that our submitted requests were retrieved with |
422f9e4b RM |
269 | * whatever OS async calls are in the underlying engine. |
270 | */ | |
271 | td->io_u_in_flight -= r; | |
838bc709 | 272 | io_u_mark_complete(td, r); |
422f9e4b | 273 | } else |
7c639b14 | 274 | td_verror(td, r, "get_events"); |
f3e11d05 | 275 | |
ee56ad50 JA |
276 | dprint(FD_IO, "getevents: %d\n", r); |
277 | return r; | |
10ba535a JA |
278 | } |
279 | ||
280 | int td_io_queue(struct thread_data *td, struct io_u *io_u) | |
281 | { | |
a9da8ab2 JA |
282 | const enum fio_ddir ddir = acct_ddir(io_u); |
283 | unsigned long buflen = io_u->xfer_buflen; | |
7e77dd02 JA |
284 | int ret; |
285 | ||
ee56ad50 | 286 | dprint_io_u(io_u, "queue"); |
7101d9c2 JA |
287 | fio_ro_check(td, io_u); |
288 | ||
0c6e7517 | 289 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
1651e431 | 290 | io_u_set(td, io_u, IO_U_F_FLIGHT); |
0c6e7517 | 291 | |
d6aed795 | 292 | assert(fio_file_open(io_u->file)); |
3d7b485f | 293 | |
bcd5abfa JA |
294 | /* |
295 | * If using a write iolog, store this entry. | |
296 | */ | |
297 | log_io_u(td, io_u); | |
298 | ||
11786802 JA |
299 | io_u->error = 0; |
300 | io_u->resid = 0; | |
301 | ||
9b87f09b | 302 | if (td_ioengine_flagged(td, FIO_SYNCIO)) { |
12d9d841 | 303 | if (fio_fill_issue_time(td)) |
9520ebb9 | 304 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
305 | |
306 | /* | |
307 | * only used for iolog | |
308 | */ | |
309 | if (td->o.read_iolog_file) | |
310 | memcpy(&td->last_issue, &io_u->issue_time, | |
8b6a404c | 311 | sizeof(io_u->issue_time)); |
433afcb4 JA |
312 | } |
313 | ||
a9da8ab2 | 314 | if (ddir_rw(ddir)) { |
a7d01f02 JA |
315 | if (!(io_u->flags & IO_U_F_VER_LIST)) { |
316 | td->io_issues[ddir]++; | |
317 | td->io_issue_bytes[ddir] += buflen; | |
318 | } | |
50a8ce86 | 319 | td->rate_io_issue_bytes[ddir] += buflen; |
74d6277f | 320 | } |
755200a3 | 321 | |
7e77dd02 | 322 | ret = td->io_ops->queue(td, io_u); |
5aeb77df | 323 | |
4d4e80f2 | 324 | unlock_file(td, io_u->file); |
b2bd2bd9 | 325 | |
a9da8ab2 JA |
326 | if (ret == FIO_Q_BUSY && ddir_rw(ddir)) { |
327 | td->io_issues[ddir]--; | |
328 | td->io_issue_bytes[ddir] -= buflen; | |
50a8ce86 | 329 | td->rate_io_issue_bytes[ddir] -= buflen; |
871467d9 | 330 | io_u_clear(td, io_u, IO_U_F_FLIGHT); |
cd8a19e6 JA |
331 | } |
332 | ||
39a43d34 JA |
333 | /* |
334 | * If an error was seen and the io engine didn't propagate it | |
335 | * back to 'td', do so. | |
336 | */ | |
337 | if (io_u->error && !td->error) | |
338 | td_verror(td, io_u->error, "td_io_queue"); | |
339 | ||
cb211682 JA |
340 | /* |
341 | * Add warning for O_DIRECT so that users have an easier time | |
342 | * spotting potentially bad alignment. If this triggers for the first | |
343 | * IO, then it's likely an alignment problem or because the host fs | |
344 | * does not support O_DIRECT | |
345 | */ | |
ff58fced | 346 | if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 && |
cb211682 | 347 | td->o.odirect) { |
214ac7e0 | 348 | |
cb211682 | 349 | log_info("fio: first direct IO errored. File system may not " |
78d4a262 TK |
350 | "support direct IO, or iomem_align= is bad, or " |
351 | "invalid block size. Try setting direct=0.\n"); | |
cb211682 JA |
352 | } |
353 | ||
77b451cc | 354 | if (!td->io_ops->commit || io_u->ddir == DDIR_TRIM) { |
838bc709 JA |
355 | io_u_mark_submit(td, 1); |
356 | io_u_mark_complete(td, 1); | |
357 | } | |
358 | ||
d8005759 | 359 | if (ret == FIO_Q_COMPLETED) { |
7f3ecee2 | 360 | if (ddir_rw(io_u->ddir) || ddir_sync(io_u->ddir)) { |
d8005759 JA |
361 | io_u_mark_depth(td, 1); |
362 | td->ts.total_io_u[io_u->ddir]++; | |
6eaf09d6 | 363 | } |
d8005759 | 364 | } else if (ret == FIO_Q_QUEUED) { |
eb7c8ae2 JA |
365 | int r; |
366 | ||
e6727cbd JA |
367 | td->io_u_queued++; |
368 | ||
7f3ecee2 | 369 | if (ddir_rw(io_u->ddir) || ddir_sync(io_u->ddir)) |
d8005759 | 370 | td->ts.total_io_u[io_u->ddir]++; |
d8005759 JA |
371 | |
372 | if (td->io_u_queued >= td->o.iodepth_batch) { | |
eb7c8ae2 JA |
373 | r = td_io_commit(td); |
374 | if (r < 0) | |
375 | return r; | |
376 | } | |
377 | } | |
cb5ab512 | 378 | |
9b87f09b | 379 | if (!td_ioengine_flagged(td, FIO_SYNCIO)) { |
12d9d841 | 380 | if (fio_fill_issue_time(td)) |
9520ebb9 | 381 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
382 | |
383 | /* | |
384 | * only used for iolog | |
385 | */ | |
386 | if (td->o.read_iolog_file) | |
387 | memcpy(&td->last_issue, &io_u->issue_time, | |
8b6a404c | 388 | sizeof(io_u->issue_time)); |
433afcb4 JA |
389 | } |
390 | ||
7e77dd02 | 391 | return ret; |
10ba535a | 392 | } |
8c16d840 JA |
393 | |
394 | int td_io_init(struct thread_data *td) | |
395 | { | |
eeb12160 | 396 | int ret = 0; |
8c16d840 | 397 | |
eeb12160 JA |
398 | if (td->io_ops->init) { |
399 | ret = td->io_ops->init(td); | |
356ef1a1 TK |
400 | if (ret) |
401 | log_err("fio: io engine %s init failed.%s\n", | |
402 | td->io_ops->name, | |
403 | td->o.iodepth > 1 ? | |
404 | " Perhaps try reducing io depth?" : ""); | |
405 | else | |
406 | td->io_ops_init = 1; | |
7c973896 JA |
407 | if (!td->error) |
408 | td->error = ret; | |
eeb12160 JA |
409 | } |
410 | ||
411 | return ret; | |
8c16d840 | 412 | } |
755200a3 JA |
413 | |
414 | int td_io_commit(struct thread_data *td) | |
415 | { | |
f3e11d05 JA |
416 | int ret; |
417 | ||
ee56ad50 JA |
418 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
419 | ||
d8005759 | 420 | if (!td->cur_depth || !td->io_u_queued) |
e1161c32 | 421 | return 0; |
cb5ab512 | 422 | |
3fd9efbc | 423 | io_u_mark_depth(td, td->io_u_queued); |
d8005759 | 424 | |
f3e11d05 JA |
425 | if (td->io_ops->commit) { |
426 | ret = td->io_ops->commit(td); | |
427 | if (ret) | |
428 | td_verror(td, -ret, "io commit"); | |
429 | } | |
3fd9efbc | 430 | |
422f9e4b RM |
431 | /* |
432 | * Reflect that events were submitted as async IO requests. | |
433 | */ | |
434 | td->io_u_in_flight += td->io_u_queued; | |
435 | td->io_u_queued = 0; | |
755200a3 JA |
436 | |
437 | return 0; | |
438 | } | |
b5af8293 JA |
439 | |
440 | int td_io_open_file(struct thread_data *td, struct fio_file *f) | |
441 | { | |
22a57ba8 JA |
442 | assert(!fio_file_open(f)); |
443 | assert(f->fd == -1); | |
966fcbd4 | 444 | assert(td->io_ops->open_file); |
22a57ba8 | 445 | |
413d6693 JA |
446 | if (td->io_ops->open_file(td, f)) { |
447 | if (td->error == EINVAL && td->o.odirect) | |
448 | log_err("fio: destination does not support O_DIRECT\n"); | |
5ec10eaa JA |
449 | if (td->error == EMFILE) { |
450 | log_err("fio: try reducing/setting openfiles (failed" | |
451 | " at %u of %u)\n", td->nr_open_files, | |
452 | td->o.nr_files); | |
453 | } | |
413d6693 | 454 | |
22a57ba8 JA |
455 | assert(f->fd == -1); |
456 | assert(!fio_file_open(f)); | |
413d6693 JA |
457 | return 1; |
458 | } | |
459 | ||
33c48814 | 460 | fio_file_reset(td, f); |
d6aed795 JA |
461 | fio_file_set_open(f); |
462 | fio_file_clear_closing(f); | |
c97bd0fa | 463 | disk_util_inc(f->du); |
d5707a35 JA |
464 | |
465 | td->nr_open_files++; | |
466 | get_file(f); | |
467 | ||
66159828 JA |
468 | if (f->filetype == FIO_TYPE_PIPE) { |
469 | if (td_random(td)) { | |
470 | log_err("fio: can't seek on pipes (no random io)\n"); | |
471 | goto err; | |
472 | } | |
473 | } | |
474 | ||
9b87f09b | 475 | if (td_ioengine_flagged(td, FIO_DISKLESSIO)) |
413d6693 JA |
476 | goto done; |
477 | ||
478 | if (td->o.invalidate_cache && file_invalidate_cache(td, f)) | |
479 | goto err; | |
480 | ||
ecb2083d | 481 | if (td->o.fadvise_hint != F_ADV_NONE && |
686fbd31 | 482 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
413d6693 JA |
483 | int flags; |
484 | ||
ecb2083d JA |
485 | if (td->o.fadvise_hint == F_ADV_TYPE) { |
486 | if (td_random(td)) | |
487 | flags = POSIX_FADV_RANDOM; | |
488 | else | |
489 | flags = POSIX_FADV_SEQUENTIAL; | |
490 | } else if (td->o.fadvise_hint == F_ADV_RANDOM) | |
413d6693 | 491 | flags = POSIX_FADV_RANDOM; |
ecb2083d | 492 | else if (td->o.fadvise_hint == F_ADV_SEQUENTIAL) |
413d6693 | 493 | flags = POSIX_FADV_SEQUENTIAL; |
ecb2083d JA |
494 | else { |
495 | log_err("fio: unknown fadvise type %d\n", | |
496 | td->o.fadvise_hint); | |
497 | flags = POSIX_FADV_NORMAL; | |
498 | } | |
413d6693 | 499 | |
ecc314ba | 500 | if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) { |
825b0a75 JA |
501 | if (!fio_did_warn(FIO_WARN_FADVISE)) |
502 | log_err("fio: fadvise hint failed\n"); | |
413d6693 | 503 | } |
7bb48f84 | 504 | } |
ae8e559e JA |
505 | #ifdef FIO_HAVE_WRITE_HINT |
506 | if (fio_option_is_set(&td->o, write_hint) && | |
686fbd31 | 507 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
ae8e559e | 508 | uint64_t hint = td->o.write_hint; |
bd553af6 | 509 | int cmd; |
37659335 | 510 | |
bd553af6 JA |
511 | /* |
512 | * For direct IO, we just need/want to set the hint on | |
513 | * the file descriptor. For buffered IO, we need to set | |
514 | * it on the inode. | |
515 | */ | |
516 | if (td->o.odirect) | |
517 | cmd = F_SET_FILE_RW_HINT; | |
518 | else | |
519 | cmd = F_SET_RW_HINT; | |
520 | ||
521 | if (fcntl(f->fd, cmd, &hint) < 0) { | |
ae8e559e | 522 | td_verror(td, errno, "fcntl write hint"); |
37659335 JA |
523 | goto err; |
524 | } | |
525 | } | |
526 | #endif | |
a978ba68 | 527 | |
47534cda TK |
528 | if (td->o.odirect && !OS_O_DIRECT && fio_set_directio(td, f)) |
529 | goto err; | |
e116f2b9 | 530 | |
413d6693 | 531 | done: |
f29b25a3 | 532 | log_file(td, f, FIO_LOG_OPEN_FILE); |
413d6693 JA |
533 | return 0; |
534 | err: | |
c97bd0fa | 535 | disk_util_dec(f->du); |
b284075a JA |
536 | if (td->io_ops->close_file) |
537 | td->io_ops->close_file(td, f); | |
7bb48f84 | 538 | return 1; |
b5af8293 JA |
539 | } |
540 | ||
6977bcd0 | 541 | int td_io_close_file(struct thread_data *td, struct fio_file *f) |
b5af8293 | 542 | { |
d6aed795 | 543 | if (!fio_file_closing(f)) |
f29b25a3 JA |
544 | log_file(td, f, FIO_LOG_CLOSE_FILE); |
545 | ||
0ad920e7 JA |
546 | /* |
547 | * mark as closing, do real close when last io on it has completed | |
548 | */ | |
d6aed795 | 549 | fio_file_set_closing(f); |
0ad920e7 | 550 | |
c97bd0fa | 551 | disk_util_dec(f->du); |
cba5243b JA |
552 | |
553 | if (td->o.file_lock_mode != FILE_LOCK_NONE) | |
554 | unlock_file_all(td, f); | |
29c1349f | 555 | |
6977bcd0 | 556 | return put_file(td, f); |
b5af8293 | 557 | } |
df9c26b1 | 558 | |
38ef9c90 CF |
559 | int td_io_unlink_file(struct thread_data *td, struct fio_file *f) |
560 | { | |
561 | if (td->io_ops->unlink_file) | |
562 | return td->io_ops->unlink_file(td, f); | |
2442c935 JA |
563 | else { |
564 | int ret; | |
565 | ||
566 | ret = unlink(f->file_name); | |
567 | if (ret < 0) | |
568 | return errno; | |
569 | ||
570 | return 0; | |
571 | } | |
38ef9c90 CF |
572 | } |
573 | ||
df9c26b1 JA |
574 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
575 | { | |
576 | if (!td->io_ops->get_file_size) | |
577 | return 0; | |
578 | ||
579 | return td->io_ops->get_file_size(td, f); | |
580 | } | |
44f29692 | 581 | |
de890a1e SL |
582 | int fio_show_ioengine_help(const char *engine) |
583 | { | |
584 | struct flist_head *entry; | |
755dcbbd | 585 | struct ioengine_ops *io_ops; |
de890a1e SL |
586 | char *sep; |
587 | int ret = 1; | |
588 | ||
589 | if (!engine || !*engine) { | |
590 | log_info("Available IO engines:\n"); | |
591 | flist_for_each(entry, &engine_list) { | |
755dcbbd TK |
592 | io_ops = flist_entry(entry, struct ioengine_ops, list); |
593 | log_info("\t%s\n", io_ops->name); | |
de890a1e SL |
594 | } |
595 | return 0; | |
596 | } | |
597 | sep = strchr(engine, ','); | |
598 | if (sep) { | |
599 | *sep = 0; | |
600 | sep++; | |
601 | } | |
602 | ||
97bb54c9 | 603 | io_ops = __load_ioengine(engine); |
755dcbbd | 604 | if (!io_ops) { |
de890a1e SL |
605 | log_info("IO engine %s not found\n", engine); |
606 | return 1; | |
607 | } | |
608 | ||
755dcbbd TK |
609 | if (io_ops->options) |
610 | ret = show_cmd_help(io_ops->options, sep); | |
de890a1e | 611 | else |
755dcbbd | 612 | log_info("IO engine %s has no options\n", io_ops->name); |
de890a1e | 613 | |
de890a1e SL |
614 | return ret; |
615 | } |