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" |
bfbdd35b | 21 | #include "zbd.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 | ||
5a8a6a03 YK |
78 | #ifdef CONFIG_DYNAMIC_ENGINES |
79 | static void *dlopen_external(struct thread_data *td, const char *engine) | |
80 | { | |
81 | char engine_path[PATH_MAX]; | |
7dc1183d | 82 | void *dlhandle; |
5a8a6a03 YK |
83 | |
84 | sprintf(engine_path, "%s/lib%s.so", FIO_EXT_ENG_DIR, engine); | |
85 | ||
7dc1183d YK |
86 | dlhandle = dlopen(engine_path, RTLD_LAZY); |
87 | if (!dlhandle) | |
88 | log_info("Engine %s not found; Either name is invalid, was not built, or fio-engine-%s package is missing.\n", | |
89 | engine, engine); | |
90 | ||
91 | return dlhandle; | |
5a8a6a03 YK |
92 | } |
93 | #else | |
94 | #define dlopen_external(td, engine) (NULL) | |
95 | #endif | |
96 | ||
5f350952 JA |
97 | static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, |
98 | const char *engine_lib) | |
99 | { | |
100 | struct ioengine_ops *ops; | |
101 | void *dlhandle; | |
102 | ||
ee56ad50 JA |
103 | dprint(FD_IO, "dload engine %s\n", engine_lib); |
104 | ||
2866c82d JA |
105 | dlerror(); |
106 | dlhandle = dlopen(engine_lib, RTLD_LAZY); | |
d4dbaaa8 | 107 | if (!dlhandle) { |
5a8a6a03 YK |
108 | dlhandle = dlopen_external(td, engine_lib); |
109 | if (!dlhandle) { | |
110 | td_vmsg(td, -1, dlerror(), "dlopen"); | |
111 | return NULL; | |
112 | } | |
d4dbaaa8 | 113 | } |
8756e4d4 | 114 | |
da51c050 JA |
115 | /* |
116 | * Unlike the included modules, external engines should have a | |
117 | * non-static ioengine structure that we can reference. | |
118 | */ | |
0abea0b7 DM |
119 | ops = dlsym(dlhandle, engine_lib); |
120 | if (!ops) | |
121 | ops = dlsym(dlhandle, "ioengine"); | |
a8075704 DG |
122 | |
123 | /* | |
124 | * For some external engines (like C++ ones) it is not that trivial | |
125 | * to provide a non-static ionengine structure that we can reference. | |
126 | * Instead we call a method which allocates the required ioengine | |
127 | * structure. | |
128 | */ | |
129 | if (!ops) { | |
130 | get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine"); | |
131 | ||
132 | if (get_ioengine) | |
133 | get_ioengine(&ops); | |
134 | } | |
135 | ||
d4dbaaa8 | 136 | if (!ops) { |
e1161c32 | 137 | td_vmsg(td, -1, dlerror(), "dlsym"); |
d4dbaaa8 JA |
138 | dlclose(dlhandle); |
139 | return NULL; | |
140 | } | |
8756e4d4 | 141 | |
565e784d | 142 | td->io_ops_dlhandle = dlhandle; |
5f350952 JA |
143 | return ops; |
144 | } | |
145 | ||
044be36e | 146 | static struct ioengine_ops *__load_ioengine(const char *engine) |
97bb54c9 | 147 | { |
97bb54c9 TK |
148 | /* |
149 | * linux libaio has alias names, so convert to what we want | |
150 | */ | |
59cd9313 | 151 | if (!strncmp(engine, "linuxaio", 8)) { |
044be36e BVA |
152 | dprint(FD_IO, "converting ioengine name: %s -> libaio\n", |
153 | engine); | |
154 | engine = "libaio"; | |
966fcbd4 | 155 | } |
97bb54c9 TK |
156 | |
157 | dprint(FD_IO, "load ioengine %s\n", engine); | |
158 | return find_ioengine(engine); | |
159 | } | |
160 | ||
4fedf59a | 161 | struct ioengine_ops *load_ioengine(struct thread_data *td) |
5f350952 | 162 | { |
81647a9a | 163 | struct ioengine_ops *ops = NULL; |
ba872a0b | 164 | const char *name; |
81647a9a | 165 | |
ba872a0b TK |
166 | /* |
167 | * Use ->ioengine_so_path if an external ioengine path is specified. | |
168 | * In this case, ->ioengine is "external" which also means the prefix | |
169 | * for external ioengines "external:" is properly used. | |
170 | */ | |
171 | name = td->o.ioengine_so_path ?: td->o.ioengine; | |
172 | ||
173 | /* | |
174 | * Try to load ->ioengine first, and if failed try to dlopen(3) either | |
175 | * ->ioengine or ->ioengine_so_path. This is redundant for an external | |
176 | * ioengine with prefix, and also leaves the possibility of unexpected | |
177 | * behavior (e.g. if the "external" ioengine exists), but we do this | |
178 | * so as not to break job files not using the prefix. | |
179 | */ | |
180 | ops = __load_ioengine(td->o.ioengine); | |
181 | if (!ops) | |
5f350952 JA |
182 | ops = dlopen_ioengine(td, name); |
183 | ||
ba872a0b TK |
184 | /* |
185 | * If ops is NULL, we failed to load ->ioengine, and also failed to | |
186 | * dlopen(3) either ->ioengine or ->ioengine_so_path as a path. | |
187 | */ | |
5f350952 JA |
188 | if (!ops) { |
189 | log_err("fio: engine %s not loadable\n", name); | |
b902ceb5 JA |
190 | return NULL; |
191 | } | |
192 | ||
8c16d840 JA |
193 | /* |
194 | * Check that the required methods are there. | |
195 | */ | |
5f350952 | 196 | if (check_engine_ops(ops)) |
8c16d840 | 197 | return NULL; |
8c16d840 | 198 | |
565e784d | 199 | return ops; |
8756e4d4 JA |
200 | } |
201 | ||
de890a1e SL |
202 | /* |
203 | * For cleaning up an ioengine which never made it to init(). | |
204 | */ | |
205 | void free_ioengine(struct thread_data *td) | |
8756e4d4 | 206 | { |
de890a1e | 207 | dprint(FD_IO, "free ioengine %s\n", td->io_ops->name); |
ee56ad50 | 208 | |
de890a1e SL |
209 | if (td->eo && td->io_ops->options) { |
210 | options_free(td->io_ops->options, td->eo); | |
211 | free(td->eo); | |
212 | td->eo = NULL; | |
2992b059 | 213 | } |
b990b5c0 | 214 | |
9b50942e | 215 | if (td->io_ops_dlhandle) { |
565e784d | 216 | dlclose(td->io_ops_dlhandle); |
9b50942e JA |
217 | td->io_ops_dlhandle = NULL; |
218 | } | |
5f350952 | 219 | |
84585003 | 220 | td->io_ops = NULL; |
b990b5c0 | 221 | } |
10ba535a | 222 | |
de890a1e SL |
223 | void close_ioengine(struct thread_data *td) |
224 | { | |
225 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); | |
226 | ||
227 | if (td->io_ops->cleanup) { | |
228 | td->io_ops->cleanup(td); | |
565e784d | 229 | td->io_ops_data = NULL; |
de890a1e SL |
230 | } |
231 | ||
232 | free_ioengine(td); | |
233 | } | |
234 | ||
10ba535a JA |
235 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
236 | { | |
ee56ad50 | 237 | dprint_io_u(io_u, "prep"); |
7101d9c2 JA |
238 | fio_ro_check(td, io_u); |
239 | ||
4d4e80f2 | 240 | lock_file(td, io_u->file, io_u->ddir); |
b2bd2bd9 | 241 | |
2ba1c290 JA |
242 | if (td->io_ops->prep) { |
243 | int ret = td->io_ops->prep(td, io_u); | |
244 | ||
e5f9a813 RE |
245 | dprint(FD_IO, "prep: io_u %p: ret=%d\n", io_u, ret); |
246 | ||
b2bd2bd9 | 247 | if (ret) |
4d4e80f2 | 248 | unlock_file(td, io_u->file); |
2ba1c290 JA |
249 | return ret; |
250 | } | |
10ba535a JA |
251 | |
252 | return 0; | |
253 | } | |
254 | ||
e7d2e616 | 255 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
1f440ece | 256 | const struct timespec *t) |
10ba535a | 257 | { |
ee56ad50 | 258 | int r = 0; |
face81b2 | 259 | |
a05d62b2 YR |
260 | /* |
261 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, | |
262 | * server side gets a message from the client | |
263 | * side that the task is finished, and | |
264 | * td->done is set to 1 after td_io_commit(). In this case, | |
265 | * there is no need to reap complete event in server side. | |
266 | */ | |
267 | if (td->done) | |
268 | return 0; | |
269 | ||
ee56ad50 JA |
270 | if (min > 0 && td->io_ops->commit) { |
271 | r = td->io_ops->commit(td); | |
face81b2 | 272 | if (r < 0) |
ee56ad50 | 273 | goto out; |
face81b2 | 274 | } |
4950421a JA |
275 | if (max > td->cur_depth) |
276 | max = td->cur_depth; | |
277 | if (min > max) | |
278 | max = min; | |
36167d82 | 279 | |
ee56ad50 | 280 | r = 0; |
4950421a | 281 | if (max && td->io_ops->getevents) |
ee56ad50 JA |
282 | r = td->io_ops->getevents(td, min, max, t); |
283 | out: | |
422f9e4b RM |
284 | if (r >= 0) { |
285 | /* | |
3fd9efbc | 286 | * Reflect that our submitted requests were retrieved with |
422f9e4b RM |
287 | * whatever OS async calls are in the underlying engine. |
288 | */ | |
289 | td->io_u_in_flight -= r; | |
838bc709 | 290 | io_u_mark_complete(td, r); |
422f9e4b | 291 | } else |
7c639b14 | 292 | td_verror(td, r, "get_events"); |
f3e11d05 | 293 | |
ee56ad50 JA |
294 | dprint(FD_IO, "getevents: %d\n", r); |
295 | return r; | |
10ba535a JA |
296 | } |
297 | ||
d3b07186 | 298 | enum fio_q_status td_io_queue(struct thread_data *td, struct io_u *io_u) |
10ba535a | 299 | { |
a9da8ab2 | 300 | const enum fio_ddir ddir = acct_ddir(io_u); |
5fff9543 | 301 | unsigned long long buflen = io_u->xfer_buflen; |
d3b07186 | 302 | enum fio_q_status ret; |
7e77dd02 | 303 | |
ee56ad50 | 304 | dprint_io_u(io_u, "queue"); |
7101d9c2 JA |
305 | fio_ro_check(td, io_u); |
306 | ||
0c6e7517 | 307 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
1651e431 | 308 | io_u_set(td, io_u, IO_U_F_FLIGHT); |
817ae977 VF |
309 | |
310 | /* | |
311 | * If overlap checking was enabled in offload mode we | |
312 | * can release this lock that was acquired when we | |
313 | * started the overlap check because the IO_U_F_FLIGHT | |
314 | * flag is now set | |
315 | */ | |
a38c70a8 BVA |
316 | if (td_offload_overlap(td)) { |
317 | int res = pthread_mutex_unlock(&overlap_check); | |
318 | assert(res == 0); | |
319 | } | |
0c6e7517 | 320 | |
d6aed795 | 321 | assert(fio_file_open(io_u->file)); |
3d7b485f | 322 | |
bcd5abfa JA |
323 | /* |
324 | * If using a write iolog, store this entry. | |
325 | */ | |
326 | log_io_u(td, io_u); | |
327 | ||
11786802 JA |
328 | io_u->error = 0; |
329 | io_u->resid = 0; | |
330 | ||
04ba61df VF |
331 | if (td_ioengine_flagged(td, FIO_SYNCIO) || |
332 | (td_ioengine_flagged(td, FIO_ASYNCIO_SYNC_TRIM) && | |
333 | io_u->ddir == DDIR_TRIM)) { | |
12d9d841 | 334 | if (fio_fill_issue_time(td)) |
9520ebb9 | 335 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
336 | |
337 | /* | |
338 | * only used for iolog | |
339 | */ | |
340 | if (td->o.read_iolog_file) | |
341 | memcpy(&td->last_issue, &io_u->issue_time, | |
8b6a404c | 342 | sizeof(io_u->issue_time)); |
433afcb4 JA |
343 | } |
344 | ||
b2a432bf | 345 | |
a9da8ab2 | 346 | if (ddir_rw(ddir)) { |
a7d01f02 JA |
347 | if (!(io_u->flags & IO_U_F_VER_LIST)) { |
348 | td->io_issues[ddir]++; | |
349 | td->io_issue_bytes[ddir] += buflen; | |
350 | } | |
50a8ce86 | 351 | td->rate_io_issue_bytes[ddir] += buflen; |
74d6277f | 352 | } |
755200a3 | 353 | |
7e77dd02 | 354 | ret = td->io_ops->queue(td, io_u); |
d9ed3e63 | 355 | zbd_queue_io_u(io_u, ret); |
5aeb77df | 356 | |
4d4e80f2 | 357 | unlock_file(td, io_u->file); |
b2bd2bd9 | 358 | |
a9da8ab2 JA |
359 | if (ret == FIO_Q_BUSY && ddir_rw(ddir)) { |
360 | td->io_issues[ddir]--; | |
361 | td->io_issue_bytes[ddir] -= buflen; | |
50a8ce86 | 362 | td->rate_io_issue_bytes[ddir] -= buflen; |
871467d9 | 363 | io_u_clear(td, io_u, IO_U_F_FLIGHT); |
cd8a19e6 JA |
364 | } |
365 | ||
39a43d34 JA |
366 | /* |
367 | * If an error was seen and the io engine didn't propagate it | |
368 | * back to 'td', do so. | |
369 | */ | |
370 | if (io_u->error && !td->error) | |
371 | td_verror(td, io_u->error, "td_io_queue"); | |
372 | ||
cb211682 JA |
373 | /* |
374 | * Add warning for O_DIRECT so that users have an easier time | |
375 | * spotting potentially bad alignment. If this triggers for the first | |
376 | * IO, then it's likely an alignment problem or because the host fs | |
377 | * does not support O_DIRECT | |
378 | */ | |
ff58fced | 379 | if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 && |
cb211682 | 380 | td->o.odirect) { |
214ac7e0 | 381 | |
cb211682 | 382 | log_info("fio: first direct IO errored. File system may not " |
78d4a262 TK |
383 | "support direct IO, or iomem_align= is bad, or " |
384 | "invalid block size. Try setting direct=0.\n"); | |
cb211682 JA |
385 | } |
386 | ||
bfbdd35b BVA |
387 | if (zbd_unaligned_write(io_u->error) && |
388 | td->io_issues[io_u->ddir & 1] == 1 && | |
389 | td->o.zone_mode != ZONE_MODE_ZBD) { | |
390 | log_info("fio: first I/O failed. If %s is a zoned block device, consider --zonemode=zbd\n", | |
391 | io_u->file->file_name); | |
392 | } | |
393 | ||
c0681c9d | 394 | if (!td->io_ops->commit) { |
838bc709 JA |
395 | io_u_mark_submit(td, 1); |
396 | io_u_mark_complete(td, 1); | |
d9ed3e63 | 397 | zbd_put_io_u(io_u); |
838bc709 JA |
398 | } |
399 | ||
d8005759 | 400 | if (ret == FIO_Q_COMPLETED) { |
00615bfb SW |
401 | if (ddir_rw(io_u->ddir) || |
402 | (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING)) { | |
d8005759 JA |
403 | io_u_mark_depth(td, 1); |
404 | td->ts.total_io_u[io_u->ddir]++; | |
6eaf09d6 | 405 | } |
d8005759 | 406 | } else if (ret == FIO_Q_QUEUED) { |
e6727cbd JA |
407 | td->io_u_queued++; |
408 | ||
00615bfb SW |
409 | if (ddir_rw(io_u->ddir) || |
410 | (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING)) | |
d8005759 | 411 | td->ts.total_io_u[io_u->ddir]++; |
d8005759 | 412 | |
a80cb54b BVA |
413 | if (td->io_u_queued >= td->o.iodepth_batch) |
414 | td_io_commit(td); | |
eb7c8ae2 | 415 | } |
cb5ab512 | 416 | |
04ba61df VF |
417 | if (!td_ioengine_flagged(td, FIO_SYNCIO) && |
418 | (!td_ioengine_flagged(td, FIO_ASYNCIO_SYNC_TRIM) || | |
419 | io_u->ddir != DDIR_TRIM)) { | |
12d9d841 | 420 | if (fio_fill_issue_time(td)) |
9520ebb9 | 421 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
422 | |
423 | /* | |
424 | * only used for iolog | |
425 | */ | |
426 | if (td->o.read_iolog_file) | |
427 | memcpy(&td->last_issue, &io_u->issue_time, | |
8b6a404c | 428 | sizeof(io_u->issue_time)); |
433afcb4 JA |
429 | } |
430 | ||
7e77dd02 | 431 | return ret; |
10ba535a | 432 | } |
8c16d840 JA |
433 | |
434 | int td_io_init(struct thread_data *td) | |
435 | { | |
eeb12160 | 436 | int ret = 0; |
8c16d840 | 437 | |
eeb12160 JA |
438 | if (td->io_ops->init) { |
439 | ret = td->io_ops->init(td); | |
356ef1a1 TK |
440 | if (ret) |
441 | log_err("fio: io engine %s init failed.%s\n", | |
442 | td->io_ops->name, | |
443 | td->o.iodepth > 1 ? | |
444 | " Perhaps try reducing io depth?" : ""); | |
445 | else | |
446 | td->io_ops_init = 1; | |
7c973896 JA |
447 | if (!td->error) |
448 | td->error = ret; | |
eeb12160 JA |
449 | } |
450 | ||
451 | return ret; | |
8c16d840 | 452 | } |
755200a3 | 453 | |
a80cb54b | 454 | void td_io_commit(struct thread_data *td) |
755200a3 | 455 | { |
f3e11d05 JA |
456 | int ret; |
457 | ||
ee56ad50 JA |
458 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
459 | ||
d8005759 | 460 | if (!td->cur_depth || !td->io_u_queued) |
a80cb54b | 461 | return; |
cb5ab512 | 462 | |
3fd9efbc | 463 | io_u_mark_depth(td, td->io_u_queued); |
d8005759 | 464 | |
f3e11d05 JA |
465 | if (td->io_ops->commit) { |
466 | ret = td->io_ops->commit(td); | |
467 | if (ret) | |
468 | td_verror(td, -ret, "io commit"); | |
469 | } | |
3fd9efbc | 470 | |
422f9e4b RM |
471 | /* |
472 | * Reflect that events were submitted as async IO requests. | |
473 | */ | |
474 | td->io_u_in_flight += td->io_u_queued; | |
475 | td->io_u_queued = 0; | |
755200a3 | 476 | } |
b5af8293 JA |
477 | |
478 | int td_io_open_file(struct thread_data *td, struct fio_file *f) | |
479 | { | |
230f33fb AK |
480 | if (fio_file_closing(f)) { |
481 | /* | |
482 | * Open translates to undo closing. | |
483 | */ | |
484 | fio_file_clear_closing(f); | |
485 | get_file(f); | |
486 | return 0; | |
487 | } | |
22a57ba8 JA |
488 | assert(!fio_file_open(f)); |
489 | assert(f->fd == -1); | |
966fcbd4 | 490 | assert(td->io_ops->open_file); |
22a57ba8 | 491 | |
413d6693 JA |
492 | if (td->io_ops->open_file(td, f)) { |
493 | if (td->error == EINVAL && td->o.odirect) | |
494 | log_err("fio: destination does not support O_DIRECT\n"); | |
5ec10eaa JA |
495 | if (td->error == EMFILE) { |
496 | log_err("fio: try reducing/setting openfiles (failed" | |
497 | " at %u of %u)\n", td->nr_open_files, | |
498 | td->o.nr_files); | |
499 | } | |
413d6693 | 500 | |
22a57ba8 JA |
501 | assert(f->fd == -1); |
502 | assert(!fio_file_open(f)); | |
413d6693 JA |
503 | return 1; |
504 | } | |
505 | ||
33c48814 | 506 | fio_file_reset(td, f); |
d6aed795 JA |
507 | fio_file_set_open(f); |
508 | fio_file_clear_closing(f); | |
c97bd0fa | 509 | disk_util_inc(f->du); |
d5707a35 JA |
510 | |
511 | td->nr_open_files++; | |
512 | get_file(f); | |
513 | ||
66159828 JA |
514 | if (f->filetype == FIO_TYPE_PIPE) { |
515 | if (td_random(td)) { | |
516 | log_err("fio: can't seek on pipes (no random io)\n"); | |
517 | goto err; | |
518 | } | |
519 | } | |
520 | ||
9b87f09b | 521 | if (td_ioengine_flagged(td, FIO_DISKLESSIO)) |
413d6693 JA |
522 | goto done; |
523 | ||
524 | if (td->o.invalidate_cache && file_invalidate_cache(td, f)) | |
525 | goto err; | |
526 | ||
ecb2083d | 527 | if (td->o.fadvise_hint != F_ADV_NONE && |
686fbd31 | 528 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
413d6693 JA |
529 | int flags; |
530 | ||
ecb2083d JA |
531 | if (td->o.fadvise_hint == F_ADV_TYPE) { |
532 | if (td_random(td)) | |
533 | flags = POSIX_FADV_RANDOM; | |
534 | else | |
535 | flags = POSIX_FADV_SEQUENTIAL; | |
536 | } else if (td->o.fadvise_hint == F_ADV_RANDOM) | |
413d6693 | 537 | flags = POSIX_FADV_RANDOM; |
ecb2083d | 538 | else if (td->o.fadvise_hint == F_ADV_SEQUENTIAL) |
413d6693 | 539 | flags = POSIX_FADV_SEQUENTIAL; |
ecb2083d JA |
540 | else { |
541 | log_err("fio: unknown fadvise type %d\n", | |
542 | td->o.fadvise_hint); | |
543 | flags = POSIX_FADV_NORMAL; | |
544 | } | |
413d6693 | 545 | |
ecc314ba | 546 | if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) { |
825b0a75 JA |
547 | if (!fio_did_warn(FIO_WARN_FADVISE)) |
548 | log_err("fio: fadvise hint failed\n"); | |
413d6693 | 549 | } |
7bb48f84 | 550 | } |
ae8e559e JA |
551 | #ifdef FIO_HAVE_WRITE_HINT |
552 | if (fio_option_is_set(&td->o, write_hint) && | |
686fbd31 | 553 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
ae8e559e | 554 | uint64_t hint = td->o.write_hint; |
bd553af6 | 555 | int cmd; |
37659335 | 556 | |
bd553af6 JA |
557 | /* |
558 | * For direct IO, we just need/want to set the hint on | |
559 | * the file descriptor. For buffered IO, we need to set | |
560 | * it on the inode. | |
561 | */ | |
562 | if (td->o.odirect) | |
563 | cmd = F_SET_FILE_RW_HINT; | |
564 | else | |
565 | cmd = F_SET_RW_HINT; | |
566 | ||
567 | if (fcntl(f->fd, cmd, &hint) < 0) { | |
ae8e559e | 568 | td_verror(td, errno, "fcntl write hint"); |
37659335 JA |
569 | goto err; |
570 | } | |
571 | } | |
572 | #endif | |
a978ba68 | 573 | |
47534cda TK |
574 | if (td->o.odirect && !OS_O_DIRECT && fio_set_directio(td, f)) |
575 | goto err; | |
e116f2b9 | 576 | |
413d6693 | 577 | done: |
f29b25a3 | 578 | log_file(td, f, FIO_LOG_OPEN_FILE); |
413d6693 JA |
579 | return 0; |
580 | err: | |
c97bd0fa | 581 | disk_util_dec(f->du); |
b284075a JA |
582 | if (td->io_ops->close_file) |
583 | td->io_ops->close_file(td, f); | |
7bb48f84 | 584 | return 1; |
b5af8293 JA |
585 | } |
586 | ||
6977bcd0 | 587 | int td_io_close_file(struct thread_data *td, struct fio_file *f) |
b5af8293 | 588 | { |
d6aed795 | 589 | if (!fio_file_closing(f)) |
f29b25a3 JA |
590 | log_file(td, f, FIO_LOG_CLOSE_FILE); |
591 | ||
0ad920e7 JA |
592 | /* |
593 | * mark as closing, do real close when last io on it has completed | |
594 | */ | |
d6aed795 | 595 | fio_file_set_closing(f); |
0ad920e7 | 596 | |
6977bcd0 | 597 | return put_file(td, f); |
b5af8293 | 598 | } |
df9c26b1 | 599 | |
38ef9c90 CF |
600 | int td_io_unlink_file(struct thread_data *td, struct fio_file *f) |
601 | { | |
602 | if (td->io_ops->unlink_file) | |
603 | return td->io_ops->unlink_file(td, f); | |
2442c935 JA |
604 | else { |
605 | int ret; | |
606 | ||
607 | ret = unlink(f->file_name); | |
608 | if (ret < 0) | |
609 | return errno; | |
610 | ||
611 | return 0; | |
612 | } | |
38ef9c90 CF |
613 | } |
614 | ||
df9c26b1 JA |
615 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
616 | { | |
617 | if (!td->io_ops->get_file_size) | |
618 | return 0; | |
619 | ||
620 | return td->io_ops->get_file_size(td, f); | |
621 | } | |
44f29692 | 622 | |
de890a1e SL |
623 | int fio_show_ioengine_help(const char *engine) |
624 | { | |
625 | struct flist_head *entry; | |
d04f1d5b | 626 | struct thread_data td; |
755dcbbd | 627 | struct ioengine_ops *io_ops; |
de890a1e SL |
628 | char *sep; |
629 | int ret = 1; | |
630 | ||
631 | if (!engine || !*engine) { | |
632 | log_info("Available IO engines:\n"); | |
633 | flist_for_each(entry, &engine_list) { | |
755dcbbd TK |
634 | io_ops = flist_entry(entry, struct ioengine_ops, list); |
635 | log_info("\t%s\n", io_ops->name); | |
de890a1e SL |
636 | } |
637 | return 0; | |
638 | } | |
639 | sep = strchr(engine, ','); | |
640 | if (sep) { | |
641 | *sep = 0; | |
642 | sep++; | |
643 | } | |
644 | ||
d04f1d5b JM |
645 | memset(&td, 0, sizeof(struct thread_data)); |
646 | td.o.ioengine = (char *)engine; | |
647 | io_ops = load_ioengine(&td); | |
648 | ||
755dcbbd | 649 | if (!io_ops) { |
de890a1e SL |
650 | log_info("IO engine %s not found\n", engine); |
651 | return 1; | |
652 | } | |
653 | ||
755dcbbd TK |
654 | if (io_ops->options) |
655 | ret = show_cmd_help(io_ops->options, sep); | |
de890a1e | 656 | else |
755dcbbd | 657 | log_info("IO engine %s has no options\n", io_ops->name); |
de890a1e | 658 | |
d04f1d5b | 659 | free_ioengine(&td); |
de890a1e SL |
660 | return ret; |
661 | } |