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 | */ | |
ebac4655 JA |
12 | #include <stdlib.h> |
13 | #include <unistd.h> | |
5c4e1dbc | 14 | #include <string.h> |
2866c82d | 15 | #include <dlfcn.h> |
ecc314ba | 16 | #include <fcntl.h> |
0c6e7517 | 17 | #include <assert.h> |
8c16d840 | 18 | |
ebac4655 | 19 | #include "fio.h" |
7c9b1bce | 20 | #include "diskutil.h" |
ebac4655 | 21 | |
01743ee1 | 22 | static FLIST_HEAD(engine_list); |
5f350952 | 23 | |
1cc954ba | 24 | static bool check_engine_ops(struct ioengine_ops *ops) |
8c16d840 | 25 | { |
5f350952 | 26 | if (ops->version != FIO_IOOPS_VERSION) { |
5ec10eaa JA |
27 | log_err("bad ioops version %d (want %d)\n", ops->version, |
28 | FIO_IOOPS_VERSION); | |
1cc954ba | 29 | return true; |
5f350952 JA |
30 | } |
31 | ||
36167d82 JA |
32 | if (!ops->queue) { |
33 | log_err("%s: no queue handler\n", ops->name); | |
1cc954ba | 34 | return true; |
36167d82 JA |
35 | } |
36 | ||
37 | /* | |
38 | * sync engines only need a ->queue() | |
39 | */ | |
40 | if (ops->flags & FIO_SYNCIO) | |
1cc954ba | 41 | return false; |
5ec10eaa | 42 | |
1cc954ba JA |
43 | if (!ops->event || !ops->getevents) { |
44 | log_err("%s: no event/getevents handler\n", ops->name); | |
45 | return true; | |
8c16d840 | 46 | } |
5ec10eaa | 47 | |
1cc954ba | 48 | return false; |
8c16d840 JA |
49 | } |
50 | ||
5f350952 | 51 | void unregister_ioengine(struct ioengine_ops *ops) |
ebac4655 | 52 | { |
ee56ad50 | 53 | dprint(FD_IO, "ioengine %s unregistered\n", ops->name); |
adf075fa | 54 | flist_del_init(&ops->list); |
5f350952 JA |
55 | } |
56 | ||
b2fdda43 | 57 | void register_ioengine(struct ioengine_ops *ops) |
5f350952 | 58 | { |
ee56ad50 | 59 | dprint(FD_IO, "ioengine %s registered\n", ops->name); |
01743ee1 | 60 | flist_add_tail(&ops->list, &engine_list); |
5f350952 JA |
61 | } |
62 | ||
63 | static struct ioengine_ops *find_ioengine(const char *name) | |
64 | { | |
65 | struct ioengine_ops *ops; | |
01743ee1 | 66 | struct flist_head *entry; |
ebac4655 | 67 | |
01743ee1 JA |
68 | flist_for_each(entry, &engine_list) { |
69 | ops = flist_entry(entry, struct ioengine_ops, list); | |
bc5b77a8 | 70 | if (!strcmp(name, ops->name)) |
5f350952 JA |
71 | return ops; |
72 | } | |
73 | ||
74 | return NULL; | |
75 | } | |
76 | ||
77 | static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, | |
78 | const char *engine_lib) | |
79 | { | |
80 | struct ioengine_ops *ops; | |
81 | void *dlhandle; | |
82 | ||
ee56ad50 JA |
83 | dprint(FD_IO, "dload engine %s\n", engine_lib); |
84 | ||
2866c82d JA |
85 | dlerror(); |
86 | dlhandle = dlopen(engine_lib, RTLD_LAZY); | |
d4dbaaa8 | 87 | if (!dlhandle) { |
e1161c32 | 88 | td_vmsg(td, -1, dlerror(), "dlopen"); |
d4dbaaa8 JA |
89 | return NULL; |
90 | } | |
8756e4d4 | 91 | |
da51c050 JA |
92 | /* |
93 | * Unlike the included modules, external engines should have a | |
94 | * non-static ioengine structure that we can reference. | |
95 | */ | |
0abea0b7 DM |
96 | ops = dlsym(dlhandle, engine_lib); |
97 | if (!ops) | |
98 | ops = dlsym(dlhandle, "ioengine"); | |
a8075704 DG |
99 | |
100 | /* | |
101 | * For some external engines (like C++ ones) it is not that trivial | |
102 | * to provide a non-static ionengine structure that we can reference. | |
103 | * Instead we call a method which allocates the required ioengine | |
104 | * structure. | |
105 | */ | |
106 | if (!ops) { | |
107 | get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine"); | |
108 | ||
109 | if (get_ioengine) | |
110 | get_ioengine(&ops); | |
111 | } | |
112 | ||
d4dbaaa8 | 113 | if (!ops) { |
e1161c32 | 114 | td_vmsg(td, -1, dlerror(), "dlsym"); |
d4dbaaa8 JA |
115 | dlclose(dlhandle); |
116 | return NULL; | |
117 | } | |
8756e4d4 | 118 | |
565e784d | 119 | td->io_ops_dlhandle = dlhandle; |
5f350952 JA |
120 | return ops; |
121 | } | |
122 | ||
97bb54c9 TK |
123 | static struct ioengine_ops *__load_ioengine(const char *name) |
124 | { | |
125 | char engine[64]; | |
126 | ||
127 | engine[sizeof(engine) - 1] = '\0'; | |
128 | strncpy(engine, name, sizeof(engine) - 1); | |
129 | ||
130 | /* | |
131 | * linux libaio has alias names, so convert to what we want | |
132 | */ | |
966fcbd4 | 133 | if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3)) { |
134 | dprint(FD_IO, "converting ioengine name: %s -> libaio\n", name); | |
97bb54c9 | 135 | strcpy(engine, "libaio"); |
966fcbd4 | 136 | } |
97bb54c9 TK |
137 | |
138 | dprint(FD_IO, "load ioengine %s\n", engine); | |
139 | return find_ioengine(engine); | |
140 | } | |
141 | ||
4fedf59a | 142 | struct ioengine_ops *load_ioengine(struct thread_data *td) |
5f350952 | 143 | { |
81647a9a | 144 | struct ioengine_ops *ops = NULL; |
ba872a0b | 145 | const char *name; |
81647a9a | 146 | |
ba872a0b TK |
147 | /* |
148 | * Use ->ioengine_so_path if an external ioengine path is specified. | |
149 | * In this case, ->ioengine is "external" which also means the prefix | |
150 | * for external ioengines "external:" is properly used. | |
151 | */ | |
152 | name = td->o.ioengine_so_path ?: td->o.ioengine; | |
153 | ||
154 | /* | |
155 | * Try to load ->ioengine first, and if failed try to dlopen(3) either | |
156 | * ->ioengine or ->ioengine_so_path. This is redundant for an external | |
157 | * ioengine with prefix, and also leaves the possibility of unexpected | |
158 | * behavior (e.g. if the "external" ioengine exists), but we do this | |
159 | * so as not to break job files not using the prefix. | |
160 | */ | |
161 | ops = __load_ioengine(td->o.ioengine); | |
162 | if (!ops) | |
5f350952 JA |
163 | ops = dlopen_ioengine(td, name); |
164 | ||
ba872a0b TK |
165 | /* |
166 | * If ops is NULL, we failed to load ->ioengine, and also failed to | |
167 | * dlopen(3) either ->ioengine or ->ioengine_so_path as a path. | |
168 | */ | |
5f350952 JA |
169 | if (!ops) { |
170 | log_err("fio: engine %s not loadable\n", name); | |
b902ceb5 JA |
171 | return NULL; |
172 | } | |
173 | ||
8c16d840 JA |
174 | /* |
175 | * Check that the required methods are there. | |
176 | */ | |
5f350952 | 177 | if (check_engine_ops(ops)) |
8c16d840 | 178 | return NULL; |
8c16d840 | 179 | |
565e784d | 180 | return ops; |
8756e4d4 JA |
181 | } |
182 | ||
de890a1e SL |
183 | /* |
184 | * For cleaning up an ioengine which never made it to init(). | |
185 | */ | |
186 | void free_ioengine(struct thread_data *td) | |
8756e4d4 | 187 | { |
de890a1e | 188 | dprint(FD_IO, "free ioengine %s\n", td->io_ops->name); |
ee56ad50 | 189 | |
de890a1e SL |
190 | if (td->eo && td->io_ops->options) { |
191 | options_free(td->io_ops->options, td->eo); | |
192 | free(td->eo); | |
193 | td->eo = NULL; | |
2992b059 | 194 | } |
b990b5c0 | 195 | |
9b50942e | 196 | if (td->io_ops_dlhandle) { |
565e784d | 197 | dlclose(td->io_ops_dlhandle); |
9b50942e JA |
198 | td->io_ops_dlhandle = NULL; |
199 | } | |
5f350952 | 200 | |
84585003 | 201 | td->io_ops = NULL; |
b990b5c0 | 202 | } |
10ba535a | 203 | |
de890a1e SL |
204 | void close_ioengine(struct thread_data *td) |
205 | { | |
206 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); | |
207 | ||
208 | if (td->io_ops->cleanup) { | |
209 | td->io_ops->cleanup(td); | |
565e784d | 210 | td->io_ops_data = NULL; |
de890a1e SL |
211 | } |
212 | ||
213 | free_ioengine(td); | |
214 | } | |
215 | ||
10ba535a JA |
216 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
217 | { | |
ee56ad50 | 218 | dprint_io_u(io_u, "prep"); |
7101d9c2 JA |
219 | fio_ro_check(td, io_u); |
220 | ||
4d4e80f2 | 221 | lock_file(td, io_u->file, io_u->ddir); |
b2bd2bd9 | 222 | |
2ba1c290 JA |
223 | if (td->io_ops->prep) { |
224 | int ret = td->io_ops->prep(td, io_u); | |
225 | ||
e5f9a813 RE |
226 | dprint(FD_IO, "prep: io_u %p: ret=%d\n", io_u, ret); |
227 | ||
b2bd2bd9 | 228 | if (ret) |
4d4e80f2 | 229 | unlock_file(td, io_u->file); |
2ba1c290 JA |
230 | return ret; |
231 | } | |
10ba535a JA |
232 | |
233 | return 0; | |
234 | } | |
235 | ||
e7d2e616 | 236 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
1f440ece | 237 | const struct timespec *t) |
10ba535a | 238 | { |
ee56ad50 | 239 | int r = 0; |
face81b2 | 240 | |
a05d62b2 YR |
241 | /* |
242 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, | |
243 | * server side gets a message from the client | |
244 | * side that the task is finished, and | |
245 | * td->done is set to 1 after td_io_commit(). In this case, | |
246 | * there is no need to reap complete event in server side. | |
247 | */ | |
248 | if (td->done) | |
249 | return 0; | |
250 | ||
ee56ad50 JA |
251 | if (min > 0 && td->io_ops->commit) { |
252 | r = td->io_ops->commit(td); | |
face81b2 | 253 | if (r < 0) |
ee56ad50 | 254 | goto out; |
face81b2 | 255 | } |
4950421a JA |
256 | if (max > td->cur_depth) |
257 | max = td->cur_depth; | |
258 | if (min > max) | |
259 | max = min; | |
36167d82 | 260 | |
ee56ad50 | 261 | r = 0; |
4950421a | 262 | if (max && td->io_ops->getevents) |
ee56ad50 JA |
263 | r = td->io_ops->getevents(td, min, max, t); |
264 | out: | |
422f9e4b RM |
265 | if (r >= 0) { |
266 | /* | |
3fd9efbc | 267 | * Reflect that our submitted requests were retrieved with |
422f9e4b RM |
268 | * whatever OS async calls are in the underlying engine. |
269 | */ | |
270 | td->io_u_in_flight -= r; | |
838bc709 | 271 | io_u_mark_complete(td, r); |
422f9e4b | 272 | } else |
7c639b14 | 273 | td_verror(td, r, "get_events"); |
f3e11d05 | 274 | |
ee56ad50 JA |
275 | dprint(FD_IO, "getevents: %d\n", r); |
276 | return r; | |
10ba535a JA |
277 | } |
278 | ||
d3b07186 | 279 | enum fio_q_status td_io_queue(struct thread_data *td, struct io_u *io_u) |
10ba535a | 280 | { |
a9da8ab2 | 281 | const enum fio_ddir ddir = acct_ddir(io_u); |
5fff9543 | 282 | unsigned long long buflen = io_u->xfer_buflen; |
d3b07186 | 283 | enum fio_q_status ret; |
7e77dd02 | 284 | |
ee56ad50 | 285 | dprint_io_u(io_u, "queue"); |
7101d9c2 JA |
286 | fio_ro_check(td, io_u); |
287 | ||
0c6e7517 | 288 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
1651e431 | 289 | io_u_set(td, io_u, IO_U_F_FLIGHT); |
0c6e7517 | 290 | |
d6aed795 | 291 | assert(fio_file_open(io_u->file)); |
3d7b485f | 292 | |
bcd5abfa JA |
293 | /* |
294 | * If using a write iolog, store this entry. | |
295 | */ | |
296 | log_io_u(td, io_u); | |
297 | ||
11786802 JA |
298 | io_u->error = 0; |
299 | io_u->resid = 0; | |
300 | ||
9b87f09b | 301 | if (td_ioengine_flagged(td, FIO_SYNCIO)) { |
12d9d841 | 302 | if (fio_fill_issue_time(td)) |
9520ebb9 | 303 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
304 | |
305 | /* | |
306 | * only used for iolog | |
307 | */ | |
308 | if (td->o.read_iolog_file) | |
309 | memcpy(&td->last_issue, &io_u->issue_time, | |
8b6a404c | 310 | sizeof(io_u->issue_time)); |
433afcb4 JA |
311 | } |
312 | ||
a9da8ab2 | 313 | if (ddir_rw(ddir)) { |
a7d01f02 JA |
314 | if (!(io_u->flags & IO_U_F_VER_LIST)) { |
315 | td->io_issues[ddir]++; | |
316 | td->io_issue_bytes[ddir] += buflen; | |
317 | } | |
50a8ce86 | 318 | td->rate_io_issue_bytes[ddir] += buflen; |
74d6277f | 319 | } |
755200a3 | 320 | |
7e77dd02 | 321 | ret = td->io_ops->queue(td, io_u); |
5aeb77df | 322 | |
4d4e80f2 | 323 | unlock_file(td, io_u->file); |
b2bd2bd9 | 324 | |
a9da8ab2 JA |
325 | if (ret == FIO_Q_BUSY && ddir_rw(ddir)) { |
326 | td->io_issues[ddir]--; | |
327 | td->io_issue_bytes[ddir] -= buflen; | |
50a8ce86 | 328 | td->rate_io_issue_bytes[ddir] -= buflen; |
871467d9 | 329 | io_u_clear(td, io_u, IO_U_F_FLIGHT); |
cd8a19e6 JA |
330 | } |
331 | ||
39a43d34 JA |
332 | /* |
333 | * If an error was seen and the io engine didn't propagate it | |
334 | * back to 'td', do so. | |
335 | */ | |
336 | if (io_u->error && !td->error) | |
337 | td_verror(td, io_u->error, "td_io_queue"); | |
338 | ||
cb211682 JA |
339 | /* |
340 | * Add warning for O_DIRECT so that users have an easier time | |
341 | * spotting potentially bad alignment. If this triggers for the first | |
342 | * IO, then it's likely an alignment problem or because the host fs | |
343 | * does not support O_DIRECT | |
344 | */ | |
ff58fced | 345 | if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 && |
cb211682 | 346 | td->o.odirect) { |
214ac7e0 | 347 | |
cb211682 | 348 | log_info("fio: first direct IO errored. File system may not " |
78d4a262 TK |
349 | "support direct IO, or iomem_align= is bad, or " |
350 | "invalid block size. Try setting direct=0.\n"); | |
cb211682 JA |
351 | } |
352 | ||
c0681c9d | 353 | if (!td->io_ops->commit) { |
838bc709 JA |
354 | io_u_mark_submit(td, 1); |
355 | io_u_mark_complete(td, 1); | |
356 | } | |
357 | ||
d8005759 | 358 | if (ret == FIO_Q_COMPLETED) { |
7f3ecee2 | 359 | if (ddir_rw(io_u->ddir) || ddir_sync(io_u->ddir)) { |
d8005759 JA |
360 | io_u_mark_depth(td, 1); |
361 | td->ts.total_io_u[io_u->ddir]++; | |
6eaf09d6 | 362 | } |
d8005759 | 363 | } else if (ret == FIO_Q_QUEUED) { |
e6727cbd JA |
364 | td->io_u_queued++; |
365 | ||
7f3ecee2 | 366 | if (ddir_rw(io_u->ddir) || ddir_sync(io_u->ddir)) |
d8005759 | 367 | td->ts.total_io_u[io_u->ddir]++; |
d8005759 | 368 | |
a80cb54b BVA |
369 | if (td->io_u_queued >= td->o.iodepth_batch) |
370 | td_io_commit(td); | |
eb7c8ae2 | 371 | } |
cb5ab512 | 372 | |
9b87f09b | 373 | if (!td_ioengine_flagged(td, FIO_SYNCIO)) { |
12d9d841 | 374 | if (fio_fill_issue_time(td)) |
9520ebb9 | 375 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
376 | |
377 | /* | |
378 | * only used for iolog | |
379 | */ | |
380 | if (td->o.read_iolog_file) | |
381 | memcpy(&td->last_issue, &io_u->issue_time, | |
8b6a404c | 382 | sizeof(io_u->issue_time)); |
433afcb4 JA |
383 | } |
384 | ||
7e77dd02 | 385 | return ret; |
10ba535a | 386 | } |
8c16d840 JA |
387 | |
388 | int td_io_init(struct thread_data *td) | |
389 | { | |
eeb12160 | 390 | int ret = 0; |
8c16d840 | 391 | |
eeb12160 JA |
392 | if (td->io_ops->init) { |
393 | ret = td->io_ops->init(td); | |
356ef1a1 TK |
394 | if (ret) |
395 | log_err("fio: io engine %s init failed.%s\n", | |
396 | td->io_ops->name, | |
397 | td->o.iodepth > 1 ? | |
398 | " Perhaps try reducing io depth?" : ""); | |
399 | else | |
400 | td->io_ops_init = 1; | |
7c973896 JA |
401 | if (!td->error) |
402 | td->error = ret; | |
eeb12160 JA |
403 | } |
404 | ||
405 | return ret; | |
8c16d840 | 406 | } |
755200a3 | 407 | |
a80cb54b | 408 | void td_io_commit(struct thread_data *td) |
755200a3 | 409 | { |
f3e11d05 JA |
410 | int ret; |
411 | ||
ee56ad50 JA |
412 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
413 | ||
d8005759 | 414 | if (!td->cur_depth || !td->io_u_queued) |
a80cb54b | 415 | return; |
cb5ab512 | 416 | |
3fd9efbc | 417 | io_u_mark_depth(td, td->io_u_queued); |
d8005759 | 418 | |
f3e11d05 JA |
419 | if (td->io_ops->commit) { |
420 | ret = td->io_ops->commit(td); | |
421 | if (ret) | |
422 | td_verror(td, -ret, "io commit"); | |
423 | } | |
3fd9efbc | 424 | |
422f9e4b RM |
425 | /* |
426 | * Reflect that events were submitted as async IO requests. | |
427 | */ | |
428 | td->io_u_in_flight += td->io_u_queued; | |
429 | td->io_u_queued = 0; | |
755200a3 | 430 | } |
b5af8293 JA |
431 | |
432 | int td_io_open_file(struct thread_data *td, struct fio_file *f) | |
433 | { | |
230f33fb AK |
434 | if (fio_file_closing(f)) { |
435 | /* | |
436 | * Open translates to undo closing. | |
437 | */ | |
438 | fio_file_clear_closing(f); | |
439 | get_file(f); | |
440 | return 0; | |
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 | |
6977bcd0 | 551 | return put_file(td, f); |
b5af8293 | 552 | } |
df9c26b1 | 553 | |
38ef9c90 CF |
554 | int td_io_unlink_file(struct thread_data *td, struct fio_file *f) |
555 | { | |
556 | if (td->io_ops->unlink_file) | |
557 | return td->io_ops->unlink_file(td, f); | |
2442c935 JA |
558 | else { |
559 | int ret; | |
560 | ||
561 | ret = unlink(f->file_name); | |
562 | if (ret < 0) | |
563 | return errno; | |
564 | ||
565 | return 0; | |
566 | } | |
38ef9c90 CF |
567 | } |
568 | ||
df9c26b1 JA |
569 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
570 | { | |
571 | if (!td->io_ops->get_file_size) | |
572 | return 0; | |
573 | ||
574 | return td->io_ops->get_file_size(td, f); | |
575 | } | |
44f29692 | 576 | |
de890a1e SL |
577 | int fio_show_ioengine_help(const char *engine) |
578 | { | |
579 | struct flist_head *entry; | |
d04f1d5b | 580 | struct thread_data td; |
755dcbbd | 581 | struct ioengine_ops *io_ops; |
de890a1e SL |
582 | char *sep; |
583 | int ret = 1; | |
584 | ||
585 | if (!engine || !*engine) { | |
586 | log_info("Available IO engines:\n"); | |
587 | flist_for_each(entry, &engine_list) { | |
755dcbbd TK |
588 | io_ops = flist_entry(entry, struct ioengine_ops, list); |
589 | log_info("\t%s\n", io_ops->name); | |
de890a1e SL |
590 | } |
591 | return 0; | |
592 | } | |
593 | sep = strchr(engine, ','); | |
594 | if (sep) { | |
595 | *sep = 0; | |
596 | sep++; | |
597 | } | |
598 | ||
d04f1d5b JM |
599 | memset(&td, 0, sizeof(struct thread_data)); |
600 | td.o.ioengine = (char *)engine; | |
601 | io_ops = load_ioengine(&td); | |
602 | ||
755dcbbd | 603 | if (!io_ops) { |
de890a1e SL |
604 | log_info("IO engine %s not found\n", engine); |
605 | return 1; | |
606 | } | |
607 | ||
755dcbbd TK |
608 | if (io_ops->options) |
609 | ret = show_cmd_help(io_ops->options, sep); | |
de890a1e | 610 | else |
755dcbbd | 611 | log_info("IO engine %s has no options\n", io_ops->name); |
de890a1e | 612 | |
d04f1d5b | 613 | free_ioengine(&td); |
de890a1e SL |
614 | return ret; |
615 | } |