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> |
35300d5f ES |
18 | #include <sys/types.h> |
19 | #include <dirent.h> | |
8c16d840 | 20 | |
ebac4655 | 21 | #include "fio.h" |
7c9b1bce | 22 | #include "diskutil.h" |
bfbdd35b | 23 | #include "zbd.h" |
ebac4655 | 24 | |
01743ee1 | 25 | static FLIST_HEAD(engine_list); |
5f350952 | 26 | |
abfd235a | 27 | static bool check_engine_ops(struct thread_data *td, struct ioengine_ops *ops) |
8c16d840 | 28 | { |
5f350952 | 29 | if (ops->version != FIO_IOOPS_VERSION) { |
5ec10eaa JA |
30 | log_err("bad ioops version %d (want %d)\n", ops->version, |
31 | FIO_IOOPS_VERSION); | |
1cc954ba | 32 | return true; |
5f350952 JA |
33 | } |
34 | ||
36167d82 JA |
35 | if (!ops->queue) { |
36 | log_err("%s: no queue handler\n", ops->name); | |
1cc954ba | 37 | return true; |
36167d82 JA |
38 | } |
39 | ||
40 | /* | |
41 | * sync engines only need a ->queue() | |
42 | */ | |
43 | if (ops->flags & FIO_SYNCIO) | |
1cc954ba | 44 | return false; |
5ec10eaa | 45 | |
abfd235a JA |
46 | /* |
47 | * async engines aren't reliable with offload | |
48 | */ | |
695611a9 | 49 | if ((td->o.io_submit_mode == IO_MODE_OFFLOAD) && |
8bfe330e | 50 | (ops->flags & FIO_NO_OFFLOAD)) { |
abfd235a JA |
51 | log_err("%s: can't be used with offloaded submit. Use a sync " |
52 | "engine\n", ops->name); | |
53 | return true; | |
54 | } | |
55 | ||
1cc954ba JA |
56 | if (!ops->event || !ops->getevents) { |
57 | log_err("%s: no event/getevents handler\n", ops->name); | |
58 | return true; | |
8c16d840 | 59 | } |
5ec10eaa | 60 | |
1cc954ba | 61 | return false; |
8c16d840 JA |
62 | } |
63 | ||
5f350952 | 64 | void unregister_ioengine(struct ioengine_ops *ops) |
ebac4655 | 65 | { |
ee56ad50 | 66 | dprint(FD_IO, "ioengine %s unregistered\n", ops->name); |
adf075fa | 67 | flist_del_init(&ops->list); |
5f350952 JA |
68 | } |
69 | ||
b2fdda43 | 70 | void register_ioengine(struct ioengine_ops *ops) |
5f350952 | 71 | { |
ee56ad50 | 72 | dprint(FD_IO, "ioengine %s registered\n", ops->name); |
01743ee1 | 73 | flist_add_tail(&ops->list, &engine_list); |
5f350952 JA |
74 | } |
75 | ||
76 | static struct ioengine_ops *find_ioengine(const char *name) | |
77 | { | |
78 | struct ioengine_ops *ops; | |
01743ee1 | 79 | struct flist_head *entry; |
ebac4655 | 80 | |
01743ee1 JA |
81 | flist_for_each(entry, &engine_list) { |
82 | ops = flist_entry(entry, struct ioengine_ops, list); | |
bc5b77a8 | 83 | if (!strcmp(name, ops->name)) |
5f350952 JA |
84 | return ops; |
85 | } | |
86 | ||
87 | return NULL; | |
88 | } | |
89 | ||
5a8a6a03 YK |
90 | #ifdef CONFIG_DYNAMIC_ENGINES |
91 | static void *dlopen_external(struct thread_data *td, const char *engine) | |
92 | { | |
93 | char engine_path[PATH_MAX]; | |
7dc1183d | 94 | void *dlhandle; |
5a8a6a03 | 95 | |
25b9b58e | 96 | sprintf(engine_path, "%s/fio-%s.so", FIO_EXT_ENG_DIR, engine); |
5a8a6a03 | 97 | |
7dc1183d YK |
98 | dlhandle = dlopen(engine_path, RTLD_LAZY); |
99 | if (!dlhandle) | |
100 | log_info("Engine %s not found; Either name is invalid, was not built, or fio-engine-%s package is missing.\n", | |
101 | engine, engine); | |
102 | ||
103 | return dlhandle; | |
5a8a6a03 YK |
104 | } |
105 | #else | |
106 | #define dlopen_external(td, engine) (NULL) | |
107 | #endif | |
108 | ||
5f350952 JA |
109 | static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, |
110 | const char *engine_lib) | |
111 | { | |
112 | struct ioengine_ops *ops; | |
113 | void *dlhandle; | |
114 | ||
8bdf7a84 JA |
115 | if (!strncmp(engine_lib, "linuxaio", 8) || |
116 | !strncmp(engine_lib, "aio", 3)) | |
117 | engine_lib = "libaio"; | |
118 | ||
ee56ad50 JA |
119 | dprint(FD_IO, "dload engine %s\n", engine_lib); |
120 | ||
2866c82d JA |
121 | dlerror(); |
122 | dlhandle = dlopen(engine_lib, RTLD_LAZY); | |
d4dbaaa8 | 123 | if (!dlhandle) { |
5a8a6a03 YK |
124 | dlhandle = dlopen_external(td, engine_lib); |
125 | if (!dlhandle) { | |
126 | td_vmsg(td, -1, dlerror(), "dlopen"); | |
127 | return NULL; | |
128 | } | |
d4dbaaa8 | 129 | } |
8756e4d4 | 130 | |
da51c050 JA |
131 | /* |
132 | * Unlike the included modules, external engines should have a | |
133 | * non-static ioengine structure that we can reference. | |
134 | */ | |
0abea0b7 DM |
135 | ops = dlsym(dlhandle, engine_lib); |
136 | if (!ops) | |
137 | ops = dlsym(dlhandle, "ioengine"); | |
a8075704 DG |
138 | |
139 | /* | |
140 | * For some external engines (like C++ ones) it is not that trivial | |
141 | * to provide a non-static ionengine structure that we can reference. | |
142 | * Instead we call a method which allocates the required ioengine | |
143 | * structure. | |
144 | */ | |
145 | if (!ops) { | |
146 | get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine"); | |
147 | ||
148 | if (get_ioengine) | |
149 | get_ioengine(&ops); | |
150 | } | |
151 | ||
d4dbaaa8 | 152 | if (!ops) { |
e1161c32 | 153 | td_vmsg(td, -1, dlerror(), "dlsym"); |
d4dbaaa8 JA |
154 | dlclose(dlhandle); |
155 | return NULL; | |
156 | } | |
8756e4d4 | 157 | |
565e784d | 158 | td->io_ops_dlhandle = dlhandle; |
5f350952 JA |
159 | return ops; |
160 | } | |
161 | ||
044be36e | 162 | static struct ioengine_ops *__load_ioengine(const char *engine) |
97bb54c9 | 163 | { |
97bb54c9 TK |
164 | /* |
165 | * linux libaio has alias names, so convert to what we want | |
166 | */ | |
8bdf7a84 | 167 | if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3)) { |
044be36e BVA |
168 | dprint(FD_IO, "converting ioengine name: %s -> libaio\n", |
169 | engine); | |
170 | engine = "libaio"; | |
966fcbd4 | 171 | } |
97bb54c9 TK |
172 | |
173 | dprint(FD_IO, "load ioengine %s\n", engine); | |
174 | return find_ioengine(engine); | |
175 | } | |
176 | ||
4fedf59a | 177 | struct ioengine_ops *load_ioengine(struct thread_data *td) |
5f350952 | 178 | { |
81647a9a | 179 | struct ioengine_ops *ops = NULL; |
ba872a0b | 180 | const char *name; |
81647a9a | 181 | |
ba872a0b TK |
182 | /* |
183 | * Use ->ioengine_so_path if an external ioengine path is specified. | |
184 | * In this case, ->ioengine is "external" which also means the prefix | |
185 | * for external ioengines "external:" is properly used. | |
186 | */ | |
187 | name = td->o.ioengine_so_path ?: td->o.ioengine; | |
188 | ||
189 | /* | |
190 | * Try to load ->ioengine first, and if failed try to dlopen(3) either | |
191 | * ->ioengine or ->ioengine_so_path. This is redundant for an external | |
192 | * ioengine with prefix, and also leaves the possibility of unexpected | |
193 | * behavior (e.g. if the "external" ioengine exists), but we do this | |
194 | * so as not to break job files not using the prefix. | |
195 | */ | |
196 | ops = __load_ioengine(td->o.ioengine); | |
197 | if (!ops) | |
5f350952 JA |
198 | ops = dlopen_ioengine(td, name); |
199 | ||
ba872a0b TK |
200 | /* |
201 | * If ops is NULL, we failed to load ->ioengine, and also failed to | |
202 | * dlopen(3) either ->ioengine or ->ioengine_so_path as a path. | |
203 | */ | |
5f350952 JA |
204 | if (!ops) { |
205 | log_err("fio: engine %s not loadable\n", name); | |
b902ceb5 JA |
206 | return NULL; |
207 | } | |
208 | ||
8c16d840 JA |
209 | /* |
210 | * Check that the required methods are there. | |
211 | */ | |
abfd235a | 212 | if (check_engine_ops(td, ops)) |
8c16d840 | 213 | return NULL; |
8c16d840 | 214 | |
565e784d | 215 | return ops; |
8756e4d4 JA |
216 | } |
217 | ||
de890a1e SL |
218 | /* |
219 | * For cleaning up an ioengine which never made it to init(). | |
220 | */ | |
221 | void free_ioengine(struct thread_data *td) | |
8756e4d4 | 222 | { |
de890a1e | 223 | dprint(FD_IO, "free ioengine %s\n", td->io_ops->name); |
ee56ad50 | 224 | |
de890a1e SL |
225 | if (td->eo && td->io_ops->options) { |
226 | options_free(td->io_ops->options, td->eo); | |
227 | free(td->eo); | |
228 | td->eo = NULL; | |
2992b059 | 229 | } |
b990b5c0 | 230 | |
9b50942e | 231 | if (td->io_ops_dlhandle) { |
565e784d | 232 | dlclose(td->io_ops_dlhandle); |
9b50942e JA |
233 | td->io_ops_dlhandle = NULL; |
234 | } | |
5f350952 | 235 | |
84585003 | 236 | td->io_ops = NULL; |
b990b5c0 | 237 | } |
10ba535a | 238 | |
de890a1e SL |
239 | void close_ioengine(struct thread_data *td) |
240 | { | |
241 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); | |
242 | ||
243 | if (td->io_ops->cleanup) { | |
244 | td->io_ops->cleanup(td); | |
565e784d | 245 | td->io_ops_data = NULL; |
de890a1e SL |
246 | } |
247 | ||
248 | free_ioengine(td); | |
249 | } | |
250 | ||
10ba535a JA |
251 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
252 | { | |
ee56ad50 | 253 | dprint_io_u(io_u, "prep"); |
7101d9c2 JA |
254 | fio_ro_check(td, io_u); |
255 | ||
4d4e80f2 | 256 | lock_file(td, io_u->file, io_u->ddir); |
b2bd2bd9 | 257 | |
2ba1c290 JA |
258 | if (td->io_ops->prep) { |
259 | int ret = td->io_ops->prep(td, io_u); | |
260 | ||
e5f9a813 RE |
261 | dprint(FD_IO, "prep: io_u %p: ret=%d\n", io_u, ret); |
262 | ||
b2bd2bd9 | 263 | if (ret) |
4d4e80f2 | 264 | unlock_file(td, io_u->file); |
2ba1c290 JA |
265 | return ret; |
266 | } | |
10ba535a JA |
267 | |
268 | return 0; | |
269 | } | |
270 | ||
e7d2e616 | 271 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
1f440ece | 272 | const struct timespec *t) |
10ba535a | 273 | { |
ee56ad50 | 274 | int r = 0; |
face81b2 | 275 | |
a05d62b2 YR |
276 | /* |
277 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, | |
278 | * server side gets a message from the client | |
279 | * side that the task is finished, and | |
280 | * td->done is set to 1 after td_io_commit(). In this case, | |
281 | * there is no need to reap complete event in server side. | |
282 | */ | |
283 | if (td->done) | |
284 | return 0; | |
285 | ||
ee56ad50 JA |
286 | if (min > 0 && td->io_ops->commit) { |
287 | r = td->io_ops->commit(td); | |
face81b2 | 288 | if (r < 0) |
ee56ad50 | 289 | goto out; |
face81b2 | 290 | } |
4950421a JA |
291 | if (max > td->cur_depth) |
292 | max = td->cur_depth; | |
293 | if (min > max) | |
294 | max = min; | |
36167d82 | 295 | |
ee56ad50 | 296 | r = 0; |
4950421a | 297 | if (max && td->io_ops->getevents) |
ee56ad50 JA |
298 | r = td->io_ops->getevents(td, min, max, t); |
299 | out: | |
422f9e4b RM |
300 | if (r >= 0) { |
301 | /* | |
3fd9efbc | 302 | * Reflect that our submitted requests were retrieved with |
422f9e4b RM |
303 | * whatever OS async calls are in the underlying engine. |
304 | */ | |
305 | td->io_u_in_flight -= r; | |
838bc709 | 306 | io_u_mark_complete(td, r); |
422f9e4b | 307 | } else |
7c639b14 | 308 | td_verror(td, r, "get_events"); |
f3e11d05 | 309 | |
ee56ad50 JA |
310 | dprint(FD_IO, "getevents: %d\n", r); |
311 | return r; | |
10ba535a JA |
312 | } |
313 | ||
d3b07186 | 314 | enum fio_q_status td_io_queue(struct thread_data *td, struct io_u *io_u) |
10ba535a | 315 | { |
a9da8ab2 | 316 | const enum fio_ddir ddir = acct_ddir(io_u); |
5fff9543 | 317 | unsigned long long buflen = io_u->xfer_buflen; |
d3b07186 | 318 | enum fio_q_status ret; |
7e77dd02 | 319 | |
ee56ad50 | 320 | dprint_io_u(io_u, "queue"); |
7101d9c2 JA |
321 | fio_ro_check(td, io_u); |
322 | ||
0c6e7517 | 323 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
1651e431 | 324 | io_u_set(td, io_u, IO_U_F_FLIGHT); |
817ae977 VF |
325 | |
326 | /* | |
327 | * If overlap checking was enabled in offload mode we | |
328 | * can release this lock that was acquired when we | |
329 | * started the overlap check because the IO_U_F_FLIGHT | |
330 | * flag is now set | |
331 | */ | |
a38c70a8 BVA |
332 | if (td_offload_overlap(td)) { |
333 | int res = pthread_mutex_unlock(&overlap_check); | |
334 | assert(res == 0); | |
335 | } | |
0c6e7517 | 336 | |
d6aed795 | 337 | assert(fio_file_open(io_u->file)); |
3d7b485f | 338 | |
bcd5abfa JA |
339 | /* |
340 | * If using a write iolog, store this entry. | |
341 | */ | |
342 | log_io_u(td, io_u); | |
343 | ||
11786802 JA |
344 | io_u->error = 0; |
345 | io_u->resid = 0; | |
346 | ||
04ba61df VF |
347 | if (td_ioengine_flagged(td, FIO_SYNCIO) || |
348 | (td_ioengine_flagged(td, FIO_ASYNCIO_SYNC_TRIM) && | |
349 | io_u->ddir == DDIR_TRIM)) { | |
12d9d841 | 350 | if (fio_fill_issue_time(td)) |
9520ebb9 | 351 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
352 | |
353 | /* | |
354 | * only used for iolog | |
355 | */ | |
356 | if (td->o.read_iolog_file) | |
357 | memcpy(&td->last_issue, &io_u->issue_time, | |
8b6a404c | 358 | sizeof(io_u->issue_time)); |
433afcb4 JA |
359 | } |
360 | ||
b2a432bf | 361 | |
a9da8ab2 | 362 | if (ddir_rw(ddir)) { |
a7d01f02 JA |
363 | if (!(io_u->flags & IO_U_F_VER_LIST)) { |
364 | td->io_issues[ddir]++; | |
365 | td->io_issue_bytes[ddir] += buflen; | |
366 | } | |
50a8ce86 | 367 | td->rate_io_issue_bytes[ddir] += buflen; |
74d6277f | 368 | } |
755200a3 | 369 | |
7e77dd02 | 370 | ret = td->io_ops->queue(td, io_u); |
b2da58c4 | 371 | zbd_queue_io_u(td, io_u, ret); |
5aeb77df | 372 | |
4d4e80f2 | 373 | unlock_file(td, io_u->file); |
b2bd2bd9 | 374 | |
a9da8ab2 JA |
375 | if (ret == FIO_Q_BUSY && ddir_rw(ddir)) { |
376 | td->io_issues[ddir]--; | |
377 | td->io_issue_bytes[ddir] -= buflen; | |
50a8ce86 | 378 | td->rate_io_issue_bytes[ddir] -= buflen; |
871467d9 | 379 | io_u_clear(td, io_u, IO_U_F_FLIGHT); |
cd8a19e6 JA |
380 | } |
381 | ||
39a43d34 JA |
382 | /* |
383 | * If an error was seen and the io engine didn't propagate it | |
384 | * back to 'td', do so. | |
385 | */ | |
386 | if (io_u->error && !td->error) | |
387 | td_verror(td, io_u->error, "td_io_queue"); | |
388 | ||
cb211682 JA |
389 | /* |
390 | * Add warning for O_DIRECT so that users have an easier time | |
391 | * spotting potentially bad alignment. If this triggers for the first | |
392 | * IO, then it's likely an alignment problem or because the host fs | |
393 | * does not support O_DIRECT | |
394 | */ | |
ff58fced | 395 | if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 && |
cb211682 | 396 | td->o.odirect) { |
214ac7e0 | 397 | |
cb211682 | 398 | log_info("fio: first direct IO errored. File system may not " |
78d4a262 TK |
399 | "support direct IO, or iomem_align= is bad, or " |
400 | "invalid block size. Try setting direct=0.\n"); | |
cb211682 JA |
401 | } |
402 | ||
bfbdd35b BVA |
403 | if (zbd_unaligned_write(io_u->error) && |
404 | td->io_issues[io_u->ddir & 1] == 1 && | |
405 | td->o.zone_mode != ZONE_MODE_ZBD) { | |
406 | log_info("fio: first I/O failed. If %s is a zoned block device, consider --zonemode=zbd\n", | |
407 | io_u->file->file_name); | |
408 | } | |
409 | ||
c0681c9d | 410 | if (!td->io_ops->commit) { |
838bc709 JA |
411 | io_u_mark_submit(td, 1); |
412 | io_u_mark_complete(td, 1); | |
b2da58c4 | 413 | zbd_put_io_u(td, io_u); |
838bc709 JA |
414 | } |
415 | ||
d8005759 | 416 | if (ret == FIO_Q_COMPLETED) { |
00615bfb SW |
417 | if (ddir_rw(io_u->ddir) || |
418 | (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING)) { | |
d8005759 JA |
419 | io_u_mark_depth(td, 1); |
420 | td->ts.total_io_u[io_u->ddir]++; | |
6eaf09d6 | 421 | } |
d8005759 | 422 | } else if (ret == FIO_Q_QUEUED) { |
e6727cbd JA |
423 | td->io_u_queued++; |
424 | ||
00615bfb SW |
425 | if (ddir_rw(io_u->ddir) || |
426 | (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING)) | |
d8005759 | 427 | td->ts.total_io_u[io_u->ddir]++; |
d8005759 | 428 | |
a80cb54b BVA |
429 | if (td->io_u_queued >= td->o.iodepth_batch) |
430 | td_io_commit(td); | |
eb7c8ae2 | 431 | } |
cb5ab512 | 432 | |
04ba61df VF |
433 | if (!td_ioengine_flagged(td, FIO_SYNCIO) && |
434 | (!td_ioengine_flagged(td, FIO_ASYNCIO_SYNC_TRIM) || | |
435 | io_u->ddir != DDIR_TRIM)) { | |
12d9d841 | 436 | if (fio_fill_issue_time(td)) |
9520ebb9 | 437 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
438 | |
439 | /* | |
440 | * only used for iolog | |
441 | */ | |
442 | if (td->o.read_iolog_file) | |
443 | memcpy(&td->last_issue, &io_u->issue_time, | |
8b6a404c | 444 | sizeof(io_u->issue_time)); |
433afcb4 JA |
445 | } |
446 | ||
7e77dd02 | 447 | return ret; |
10ba535a | 448 | } |
8c16d840 JA |
449 | |
450 | int td_io_init(struct thread_data *td) | |
451 | { | |
eeb12160 | 452 | int ret = 0; |
8c16d840 | 453 | |
eeb12160 JA |
454 | if (td->io_ops->init) { |
455 | ret = td->io_ops->init(td); | |
356ef1a1 TK |
456 | if (ret) |
457 | log_err("fio: io engine %s init failed.%s\n", | |
458 | td->io_ops->name, | |
459 | td->o.iodepth > 1 ? | |
460 | " Perhaps try reducing io depth?" : ""); | |
461 | else | |
462 | td->io_ops_init = 1; | |
7c973896 JA |
463 | if (!td->error) |
464 | td->error = ret; | |
eeb12160 JA |
465 | } |
466 | ||
467 | return ret; | |
8c16d840 | 468 | } |
755200a3 | 469 | |
a80cb54b | 470 | void td_io_commit(struct thread_data *td) |
755200a3 | 471 | { |
f3e11d05 JA |
472 | int ret; |
473 | ||
ee56ad50 JA |
474 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
475 | ||
d8005759 | 476 | if (!td->cur_depth || !td->io_u_queued) |
a80cb54b | 477 | return; |
cb5ab512 | 478 | |
3fd9efbc | 479 | io_u_mark_depth(td, td->io_u_queued); |
d8005759 | 480 | |
f3e11d05 JA |
481 | if (td->io_ops->commit) { |
482 | ret = td->io_ops->commit(td); | |
483 | if (ret) | |
484 | td_verror(td, -ret, "io commit"); | |
485 | } | |
3fd9efbc | 486 | |
422f9e4b RM |
487 | /* |
488 | * Reflect that events were submitted as async IO requests. | |
489 | */ | |
490 | td->io_u_in_flight += td->io_u_queued; | |
491 | td->io_u_queued = 0; | |
755200a3 | 492 | } |
b5af8293 JA |
493 | |
494 | int td_io_open_file(struct thread_data *td, struct fio_file *f) | |
495 | { | |
230f33fb AK |
496 | if (fio_file_closing(f)) { |
497 | /* | |
498 | * Open translates to undo closing. | |
499 | */ | |
500 | fio_file_clear_closing(f); | |
501 | get_file(f); | |
502 | return 0; | |
503 | } | |
22a57ba8 JA |
504 | assert(!fio_file_open(f)); |
505 | assert(f->fd == -1); | |
966fcbd4 | 506 | assert(td->io_ops->open_file); |
22a57ba8 | 507 | |
413d6693 JA |
508 | if (td->io_ops->open_file(td, f)) { |
509 | if (td->error == EINVAL && td->o.odirect) | |
510 | log_err("fio: destination does not support O_DIRECT\n"); | |
5ec10eaa JA |
511 | if (td->error == EMFILE) { |
512 | log_err("fio: try reducing/setting openfiles (failed" | |
513 | " at %u of %u)\n", td->nr_open_files, | |
514 | td->o.nr_files); | |
515 | } | |
413d6693 | 516 | |
22a57ba8 JA |
517 | assert(f->fd == -1); |
518 | assert(!fio_file_open(f)); | |
413d6693 JA |
519 | return 1; |
520 | } | |
521 | ||
33c48814 | 522 | fio_file_reset(td, f); |
d6aed795 JA |
523 | fio_file_set_open(f); |
524 | fio_file_clear_closing(f); | |
c97bd0fa | 525 | disk_util_inc(f->du); |
d5707a35 JA |
526 | |
527 | td->nr_open_files++; | |
528 | get_file(f); | |
529 | ||
66159828 JA |
530 | if (f->filetype == FIO_TYPE_PIPE) { |
531 | if (td_random(td)) { | |
532 | log_err("fio: can't seek on pipes (no random io)\n"); | |
533 | goto err; | |
534 | } | |
535 | } | |
536 | ||
9b87f09b | 537 | if (td_ioengine_flagged(td, FIO_DISKLESSIO)) |
413d6693 JA |
538 | goto done; |
539 | ||
540 | if (td->o.invalidate_cache && file_invalidate_cache(td, f)) | |
541 | goto err; | |
542 | ||
ecb2083d | 543 | if (td->o.fadvise_hint != F_ADV_NONE && |
686fbd31 | 544 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
413d6693 JA |
545 | int flags; |
546 | ||
ecb2083d JA |
547 | if (td->o.fadvise_hint == F_ADV_TYPE) { |
548 | if (td_random(td)) | |
549 | flags = POSIX_FADV_RANDOM; | |
550 | else | |
551 | flags = POSIX_FADV_SEQUENTIAL; | |
552 | } else if (td->o.fadvise_hint == F_ADV_RANDOM) | |
413d6693 | 553 | flags = POSIX_FADV_RANDOM; |
ecb2083d | 554 | else if (td->o.fadvise_hint == F_ADV_SEQUENTIAL) |
413d6693 | 555 | flags = POSIX_FADV_SEQUENTIAL; |
ecb2083d JA |
556 | else { |
557 | log_err("fio: unknown fadvise type %d\n", | |
558 | td->o.fadvise_hint); | |
559 | flags = POSIX_FADV_NORMAL; | |
560 | } | |
413d6693 | 561 | |
ecc314ba | 562 | if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) { |
825b0a75 JA |
563 | if (!fio_did_warn(FIO_WARN_FADVISE)) |
564 | log_err("fio: fadvise hint failed\n"); | |
413d6693 | 565 | } |
7bb48f84 | 566 | } |
ae8e559e JA |
567 | #ifdef FIO_HAVE_WRITE_HINT |
568 | if (fio_option_is_set(&td->o, write_hint) && | |
686fbd31 | 569 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
ae8e559e | 570 | uint64_t hint = td->o.write_hint; |
bd553af6 | 571 | int cmd; |
37659335 | 572 | |
bd553af6 JA |
573 | /* |
574 | * For direct IO, we just need/want to set the hint on | |
575 | * the file descriptor. For buffered IO, we need to set | |
576 | * it on the inode. | |
577 | */ | |
578 | if (td->o.odirect) | |
579 | cmd = F_SET_FILE_RW_HINT; | |
580 | else | |
581 | cmd = F_SET_RW_HINT; | |
582 | ||
583 | if (fcntl(f->fd, cmd, &hint) < 0) { | |
ae8e559e | 584 | td_verror(td, errno, "fcntl write hint"); |
37659335 JA |
585 | goto err; |
586 | } | |
587 | } | |
588 | #endif | |
a978ba68 | 589 | |
47534cda TK |
590 | if (td->o.odirect && !OS_O_DIRECT && fio_set_directio(td, f)) |
591 | goto err; | |
e116f2b9 | 592 | |
413d6693 | 593 | done: |
f29b25a3 | 594 | log_file(td, f, FIO_LOG_OPEN_FILE); |
413d6693 JA |
595 | return 0; |
596 | err: | |
c97bd0fa | 597 | disk_util_dec(f->du); |
b284075a JA |
598 | if (td->io_ops->close_file) |
599 | td->io_ops->close_file(td, f); | |
7bb48f84 | 600 | return 1; |
b5af8293 JA |
601 | } |
602 | ||
6977bcd0 | 603 | int td_io_close_file(struct thread_data *td, struct fio_file *f) |
b5af8293 | 604 | { |
d6aed795 | 605 | if (!fio_file_closing(f)) |
f29b25a3 JA |
606 | log_file(td, f, FIO_LOG_CLOSE_FILE); |
607 | ||
0ad920e7 JA |
608 | /* |
609 | * mark as closing, do real close when last io on it has completed | |
610 | */ | |
d6aed795 | 611 | fio_file_set_closing(f); |
0ad920e7 | 612 | |
6977bcd0 | 613 | return put_file(td, f); |
b5af8293 | 614 | } |
df9c26b1 | 615 | |
38ef9c90 CF |
616 | int td_io_unlink_file(struct thread_data *td, struct fio_file *f) |
617 | { | |
618 | if (td->io_ops->unlink_file) | |
619 | return td->io_ops->unlink_file(td, f); | |
2442c935 JA |
620 | else { |
621 | int ret; | |
622 | ||
623 | ret = unlink(f->file_name); | |
624 | if (ret < 0) | |
625 | return errno; | |
626 | ||
627 | return 0; | |
628 | } | |
38ef9c90 CF |
629 | } |
630 | ||
df9c26b1 JA |
631 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
632 | { | |
633 | if (!td->io_ops->get_file_size) | |
634 | return 0; | |
635 | ||
636 | return td->io_ops->get_file_size(td, f); | |
637 | } | |
44f29692 | 638 | |
35300d5f ES |
639 | #ifdef CONFIG_DYNAMIC_ENGINES |
640 | /* Load all dynamic engines in FIO_EXT_ENG_DIR for enghelp command */ | |
641 | static void | |
642 | fio_load_dynamic_engines(struct thread_data *td) | |
643 | { | |
644 | DIR *dirhandle = NULL; | |
645 | struct dirent *dirent = NULL; | |
646 | char engine_path[PATH_MAX]; | |
647 | ||
648 | dirhandle = opendir(FIO_EXT_ENG_DIR); | |
649 | if (!dirhandle) | |
650 | return; | |
651 | ||
652 | while ((dirent = readdir(dirhandle)) != NULL) { | |
653 | if (!strcmp(dirent->d_name, ".") || | |
654 | !strcmp(dirent->d_name, "..")) | |
655 | continue; | |
656 | ||
657 | sprintf(engine_path, "%s/%s", FIO_EXT_ENG_DIR, dirent->d_name); | |
658 | dlopen_ioengine(td, engine_path); | |
659 | } | |
660 | ||
661 | closedir(dirhandle); | |
662 | } | |
663 | #else | |
664 | #define fio_load_dynamic_engines(td) do { } while (0) | |
665 | #endif | |
666 | ||
de890a1e SL |
667 | int fio_show_ioengine_help(const char *engine) |
668 | { | |
669 | struct flist_head *entry; | |
d04f1d5b | 670 | struct thread_data td; |
755dcbbd | 671 | struct ioengine_ops *io_ops; |
de890a1e SL |
672 | char *sep; |
673 | int ret = 1; | |
674 | ||
35300d5f ES |
675 | memset(&td, 0, sizeof(struct thread_data)); |
676 | ||
de890a1e SL |
677 | if (!engine || !*engine) { |
678 | log_info("Available IO engines:\n"); | |
35300d5f | 679 | fio_load_dynamic_engines(&td); |
de890a1e | 680 | flist_for_each(entry, &engine_list) { |
755dcbbd TK |
681 | io_ops = flist_entry(entry, struct ioengine_ops, list); |
682 | log_info("\t%s\n", io_ops->name); | |
de890a1e SL |
683 | } |
684 | return 0; | |
685 | } | |
686 | sep = strchr(engine, ','); | |
687 | if (sep) { | |
688 | *sep = 0; | |
689 | sep++; | |
690 | } | |
691 | ||
d04f1d5b JM |
692 | td.o.ioengine = (char *)engine; |
693 | io_ops = load_ioengine(&td); | |
694 | ||
755dcbbd | 695 | if (!io_ops) { |
de890a1e SL |
696 | log_info("IO engine %s not found\n", engine); |
697 | return 1; | |
698 | } | |
699 | ||
755dcbbd TK |
700 | if (io_ops->options) |
701 | ret = show_cmd_help(io_ops->options, sep); | |
de890a1e | 702 | else |
755dcbbd | 703 | log_info("IO engine %s has no options\n", io_ops->name); |
de890a1e | 704 | |
d04f1d5b | 705 | free_ioengine(&td); |
de890a1e SL |
706 | return ret; |
707 | } |