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> | |
83276370 | 20 | #include <errno.h> |
8c16d840 | 21 | |
ebac4655 | 22 | #include "fio.h" |
7c9b1bce | 23 | #include "diskutil.h" |
bfbdd35b | 24 | #include "zbd.h" |
ebac4655 | 25 | |
01743ee1 | 26 | static FLIST_HEAD(engine_list); |
5f350952 | 27 | |
d46b4565 VF |
28 | static inline bool async_ioengine_sync_trim(struct thread_data *td, |
29 | struct io_u *io_u) | |
30 | { | |
31 | return td_ioengine_flagged(td, FIO_ASYNCIO_SYNC_TRIM) && | |
32 | io_u->ddir == DDIR_TRIM; | |
33 | } | |
34 | ||
abfd235a | 35 | static bool check_engine_ops(struct thread_data *td, struct ioengine_ops *ops) |
8c16d840 | 36 | { |
5f350952 | 37 | if (ops->version != FIO_IOOPS_VERSION) { |
5ec10eaa JA |
38 | log_err("bad ioops version %d (want %d)\n", ops->version, |
39 | FIO_IOOPS_VERSION); | |
1cc954ba | 40 | return true; |
5f350952 JA |
41 | } |
42 | ||
36167d82 JA |
43 | if (!ops->queue) { |
44 | log_err("%s: no queue handler\n", ops->name); | |
1cc954ba | 45 | return true; |
36167d82 JA |
46 | } |
47 | ||
48 | /* | |
49 | * sync engines only need a ->queue() | |
50 | */ | |
51 | if (ops->flags & FIO_SYNCIO) | |
1cc954ba | 52 | return false; |
5ec10eaa | 53 | |
abfd235a JA |
54 | /* |
55 | * async engines aren't reliable with offload | |
56 | */ | |
695611a9 | 57 | if ((td->o.io_submit_mode == IO_MODE_OFFLOAD) && |
8bfe330e | 58 | (ops->flags & FIO_NO_OFFLOAD)) { |
abfd235a JA |
59 | log_err("%s: can't be used with offloaded submit. Use a sync " |
60 | "engine\n", ops->name); | |
61 | return true; | |
62 | } | |
63 | ||
1cc954ba JA |
64 | if (!ops->event || !ops->getevents) { |
65 | log_err("%s: no event/getevents handler\n", ops->name); | |
66 | return true; | |
8c16d840 | 67 | } |
5ec10eaa | 68 | |
1cc954ba | 69 | return false; |
8c16d840 JA |
70 | } |
71 | ||
5f350952 | 72 | void unregister_ioengine(struct ioengine_ops *ops) |
ebac4655 | 73 | { |
ee56ad50 | 74 | dprint(FD_IO, "ioengine %s unregistered\n", ops->name); |
adf075fa | 75 | flist_del_init(&ops->list); |
5f350952 JA |
76 | } |
77 | ||
b2fdda43 | 78 | void register_ioengine(struct ioengine_ops *ops) |
5f350952 | 79 | { |
ee56ad50 | 80 | dprint(FD_IO, "ioengine %s registered\n", ops->name); |
01743ee1 | 81 | flist_add_tail(&ops->list, &engine_list); |
5f350952 JA |
82 | } |
83 | ||
84 | static struct ioengine_ops *find_ioengine(const char *name) | |
85 | { | |
86 | struct ioengine_ops *ops; | |
01743ee1 | 87 | struct flist_head *entry; |
ebac4655 | 88 | |
01743ee1 JA |
89 | flist_for_each(entry, &engine_list) { |
90 | ops = flist_entry(entry, struct ioengine_ops, list); | |
bc5b77a8 | 91 | if (!strcmp(name, ops->name)) |
5f350952 JA |
92 | return ops; |
93 | } | |
94 | ||
95 | return NULL; | |
96 | } | |
97 | ||
5a8a6a03 YK |
98 | #ifdef CONFIG_DYNAMIC_ENGINES |
99 | static void *dlopen_external(struct thread_data *td, const char *engine) | |
100 | { | |
101 | char engine_path[PATH_MAX]; | |
7dc1183d | 102 | void *dlhandle; |
5a8a6a03 | 103 | |
25b9b58e | 104 | sprintf(engine_path, "%s/fio-%s.so", FIO_EXT_ENG_DIR, engine); |
5a8a6a03 | 105 | |
48ff7df9 | 106 | dprint(FD_IO, "dlopen external %s\n", engine_path); |
7dc1183d YK |
107 | dlhandle = dlopen(engine_path, RTLD_LAZY); |
108 | if (!dlhandle) | |
109 | log_info("Engine %s not found; Either name is invalid, was not built, or fio-engine-%s package is missing.\n", | |
110 | engine, engine); | |
111 | ||
112 | return dlhandle; | |
5a8a6a03 YK |
113 | } |
114 | #else | |
115 | #define dlopen_external(td, engine) (NULL) | |
116 | #endif | |
117 | ||
5f350952 JA |
118 | static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, |
119 | const char *engine_lib) | |
120 | { | |
121 | struct ioengine_ops *ops; | |
122 | void *dlhandle; | |
123 | ||
8bdf7a84 JA |
124 | if (!strncmp(engine_lib, "linuxaio", 8) || |
125 | !strncmp(engine_lib, "aio", 3)) | |
126 | engine_lib = "libaio"; | |
127 | ||
48ff7df9 | 128 | dprint(FD_IO, "dlopen engine %s\n", engine_lib); |
ee56ad50 | 129 | |
2866c82d JA |
130 | dlerror(); |
131 | dlhandle = dlopen(engine_lib, RTLD_LAZY); | |
d4dbaaa8 | 132 | if (!dlhandle) { |
5a8a6a03 YK |
133 | dlhandle = dlopen_external(td, engine_lib); |
134 | if (!dlhandle) { | |
135 | td_vmsg(td, -1, dlerror(), "dlopen"); | |
136 | return NULL; | |
137 | } | |
d4dbaaa8 | 138 | } |
8756e4d4 | 139 | |
da51c050 JA |
140 | /* |
141 | * Unlike the included modules, external engines should have a | |
142 | * non-static ioengine structure that we can reference. | |
143 | */ | |
0abea0b7 DM |
144 | ops = dlsym(dlhandle, engine_lib); |
145 | if (!ops) | |
146 | ops = dlsym(dlhandle, "ioengine"); | |
a8075704 DG |
147 | |
148 | /* | |
149 | * For some external engines (like C++ ones) it is not that trivial | |
150 | * to provide a non-static ionengine structure that we can reference. | |
151 | * Instead we call a method which allocates the required ioengine | |
152 | * structure. | |
153 | */ | |
154 | if (!ops) { | |
155 | get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine"); | |
156 | ||
157 | if (get_ioengine) | |
158 | get_ioengine(&ops); | |
159 | } | |
160 | ||
d4dbaaa8 | 161 | if (!ops) { |
e1161c32 | 162 | td_vmsg(td, -1, dlerror(), "dlsym"); |
d4dbaaa8 JA |
163 | dlclose(dlhandle); |
164 | return NULL; | |
165 | } | |
8756e4d4 | 166 | |
f6931a1d | 167 | ops->dlhandle = dlhandle; |
5f350952 JA |
168 | return ops; |
169 | } | |
170 | ||
044be36e | 171 | static struct ioengine_ops *__load_ioengine(const char *engine) |
97bb54c9 | 172 | { |
97bb54c9 TK |
173 | /* |
174 | * linux libaio has alias names, so convert to what we want | |
175 | */ | |
8bdf7a84 | 176 | if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3)) { |
044be36e BVA |
177 | dprint(FD_IO, "converting ioengine name: %s -> libaio\n", |
178 | engine); | |
179 | engine = "libaio"; | |
966fcbd4 | 180 | } |
97bb54c9 TK |
181 | |
182 | dprint(FD_IO, "load ioengine %s\n", engine); | |
183 | return find_ioengine(engine); | |
184 | } | |
185 | ||
4fedf59a | 186 | struct ioengine_ops *load_ioengine(struct thread_data *td) |
5f350952 | 187 | { |
81647a9a | 188 | struct ioengine_ops *ops = NULL; |
ba872a0b | 189 | const char *name; |
81647a9a | 190 | |
ba872a0b TK |
191 | /* |
192 | * Use ->ioengine_so_path if an external ioengine path is specified. | |
193 | * In this case, ->ioengine is "external" which also means the prefix | |
194 | * for external ioengines "external:" is properly used. | |
195 | */ | |
196 | name = td->o.ioengine_so_path ?: td->o.ioengine; | |
197 | ||
198 | /* | |
199 | * Try to load ->ioengine first, and if failed try to dlopen(3) either | |
200 | * ->ioengine or ->ioengine_so_path. This is redundant for an external | |
201 | * ioengine with prefix, and also leaves the possibility of unexpected | |
202 | * behavior (e.g. if the "external" ioengine exists), but we do this | |
203 | * so as not to break job files not using the prefix. | |
204 | */ | |
205 | ops = __load_ioengine(td->o.ioengine); | |
48ff7df9 ES |
206 | |
207 | /* We do re-dlopen existing handles, for reference counting */ | |
208 | if (!ops || ops->dlhandle) | |
5f350952 JA |
209 | ops = dlopen_ioengine(td, name); |
210 | ||
ba872a0b TK |
211 | /* |
212 | * If ops is NULL, we failed to load ->ioengine, and also failed to | |
213 | * dlopen(3) either ->ioengine or ->ioengine_so_path as a path. | |
214 | */ | |
5f350952 JA |
215 | if (!ops) { |
216 | log_err("fio: engine %s not loadable\n", name); | |
b902ceb5 JA |
217 | return NULL; |
218 | } | |
219 | ||
8c16d840 JA |
220 | /* |
221 | * Check that the required methods are there. | |
222 | */ | |
abfd235a | 223 | if (check_engine_ops(td, ops)) |
8c16d840 | 224 | return NULL; |
8c16d840 | 225 | |
565e784d | 226 | return ops; |
8756e4d4 JA |
227 | } |
228 | ||
de890a1e SL |
229 | /* |
230 | * For cleaning up an ioengine which never made it to init(). | |
231 | */ | |
232 | void free_ioengine(struct thread_data *td) | |
8756e4d4 | 233 | { |
6203763e DP |
234 | assert(td != NULL && td->io_ops != NULL); |
235 | ||
de890a1e | 236 | dprint(FD_IO, "free ioengine %s\n", td->io_ops->name); |
ee56ad50 | 237 | |
de890a1e SL |
238 | if (td->eo && td->io_ops->options) { |
239 | options_free(td->io_ops->options, td->eo); | |
240 | free(td->eo); | |
824912be | 241 | td->eo = NULL; |
2992b059 | 242 | } |
b990b5c0 | 243 | |
f6931a1d | 244 | if (td->io_ops->dlhandle) { |
48ff7df9 | 245 | dprint(FD_IO, "dlclose ioengine %s\n", td->io_ops->name); |
f6931a1d | 246 | dlclose(td->io_ops->dlhandle); |
9b50942e | 247 | } |
5f350952 | 248 | |
84585003 | 249 | td->io_ops = NULL; |
b990b5c0 | 250 | } |
10ba535a | 251 | |
de890a1e SL |
252 | void close_ioengine(struct thread_data *td) |
253 | { | |
254 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); | |
255 | ||
256 | if (td->io_ops->cleanup) { | |
257 | td->io_ops->cleanup(td); | |
565e784d | 258 | td->io_ops_data = NULL; |
de890a1e SL |
259 | } |
260 | ||
261 | free_ioengine(td); | |
262 | } | |
263 | ||
10ba535a JA |
264 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
265 | { | |
ee56ad50 | 266 | dprint_io_u(io_u, "prep"); |
7101d9c2 JA |
267 | fio_ro_check(td, io_u); |
268 | ||
4d4e80f2 | 269 | lock_file(td, io_u->file, io_u->ddir); |
b2bd2bd9 | 270 | |
2ba1c290 JA |
271 | if (td->io_ops->prep) { |
272 | int ret = td->io_ops->prep(td, io_u); | |
273 | ||
e5f9a813 RE |
274 | dprint(FD_IO, "prep: io_u %p: ret=%d\n", io_u, ret); |
275 | ||
b2bd2bd9 | 276 | if (ret) |
4d4e80f2 | 277 | unlock_file(td, io_u->file); |
2ba1c290 JA |
278 | return ret; |
279 | } | |
10ba535a JA |
280 | |
281 | return 0; | |
282 | } | |
283 | ||
e7d2e616 | 284 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
1f440ece | 285 | const struct timespec *t) |
10ba535a | 286 | { |
ee56ad50 | 287 | int r = 0; |
face81b2 | 288 | |
a05d62b2 YR |
289 | /* |
290 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, | |
291 | * server side gets a message from the client | |
292 | * side that the task is finished, and | |
293 | * td->done is set to 1 after td_io_commit(). In this case, | |
294 | * there is no need to reap complete event in server side. | |
295 | */ | |
296 | if (td->done) | |
297 | return 0; | |
298 | ||
ee56ad50 JA |
299 | if (min > 0 && td->io_ops->commit) { |
300 | r = td->io_ops->commit(td); | |
face81b2 | 301 | if (r < 0) |
ee56ad50 | 302 | goto out; |
face81b2 | 303 | } |
4950421a JA |
304 | if (max > td->cur_depth) |
305 | max = td->cur_depth; | |
306 | if (min > max) | |
307 | max = min; | |
36167d82 | 308 | |
ee56ad50 | 309 | r = 0; |
4950421a | 310 | if (max && td->io_ops->getevents) |
ee56ad50 JA |
311 | r = td->io_ops->getevents(td, min, max, t); |
312 | out: | |
422f9e4b RM |
313 | if (r >= 0) { |
314 | /* | |
3fd9efbc | 315 | * Reflect that our submitted requests were retrieved with |
422f9e4b RM |
316 | * whatever OS async calls are in the underlying engine. |
317 | */ | |
318 | td->io_u_in_flight -= r; | |
838bc709 | 319 | io_u_mark_complete(td, r); |
422f9e4b | 320 | } else |
7c639b14 | 321 | td_verror(td, r, "get_events"); |
f3e11d05 | 322 | |
ee56ad50 JA |
323 | dprint(FD_IO, "getevents: %d\n", r); |
324 | return r; | |
10ba535a JA |
325 | } |
326 | ||
d3b07186 | 327 | enum fio_q_status td_io_queue(struct thread_data *td, struct io_u *io_u) |
10ba535a | 328 | { |
a9da8ab2 | 329 | const enum fio_ddir ddir = acct_ddir(io_u); |
5fff9543 | 330 | unsigned long long buflen = io_u->xfer_buflen; |
d3b07186 | 331 | enum fio_q_status ret; |
7e77dd02 | 332 | |
ee56ad50 | 333 | dprint_io_u(io_u, "queue"); |
7101d9c2 JA |
334 | fio_ro_check(td, io_u); |
335 | ||
0c6e7517 | 336 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
1651e431 | 337 | io_u_set(td, io_u, IO_U_F_FLIGHT); |
817ae977 VF |
338 | |
339 | /* | |
340 | * If overlap checking was enabled in offload mode we | |
341 | * can release this lock that was acquired when we | |
342 | * started the overlap check because the IO_U_F_FLIGHT | |
343 | * flag is now set | |
344 | */ | |
14520f23 | 345 | if (td_offload_overlap(td)) { |
83276370 DP |
346 | int res; |
347 | ||
348 | res = pthread_mutex_unlock(&overlap_check); | |
349 | if (fio_unlikely(res != 0)) { | |
350 | log_err("failed to unlock overlap check mutex, err: %i:%s", errno, strerror(errno)); | |
351 | abort(); | |
352 | } | |
a38c70a8 | 353 | } |
0c6e7517 | 354 | |
d6aed795 | 355 | assert(fio_file_open(io_u->file)); |
3d7b485f | 356 | |
bcd5abfa JA |
357 | /* |
358 | * If using a write iolog, store this entry. | |
359 | */ | |
360 | log_io_u(td, io_u); | |
361 | ||
11786802 JA |
362 | io_u->error = 0; |
363 | io_u->resid = 0; | |
364 | ||
04ba61df | 365 | if (td_ioengine_flagged(td, FIO_SYNCIO) || |
d46b4565 | 366 | async_ioengine_sync_trim(td, io_u)) { |
39f56400 | 367 | if (fio_fill_issue_time(td)) { |
9520ebb9 | 368 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 | 369 | |
39f56400 VF |
370 | /* |
371 | * only used for iolog | |
372 | */ | |
373 | if (td->o.read_iolog_file) | |
374 | memcpy(&td->last_issue, &io_u->issue_time, | |
375 | sizeof(io_u->issue_time)); | |
376 | } | |
433afcb4 JA |
377 | } |
378 | ||
b2a432bf | 379 | |
a9da8ab2 | 380 | if (ddir_rw(ddir)) { |
a7d01f02 JA |
381 | if (!(io_u->flags & IO_U_F_VER_LIST)) { |
382 | td->io_issues[ddir]++; | |
383 | td->io_issue_bytes[ddir] += buflen; | |
384 | } | |
50a8ce86 | 385 | td->rate_io_issue_bytes[ddir] += buflen; |
74d6277f | 386 | } |
755200a3 | 387 | |
7e77dd02 | 388 | ret = td->io_ops->queue(td, io_u); |
b2da58c4 | 389 | zbd_queue_io_u(td, io_u, ret); |
5aeb77df | 390 | |
4d4e80f2 | 391 | unlock_file(td, io_u->file); |
b2bd2bd9 | 392 | |
a9da8ab2 JA |
393 | if (ret == FIO_Q_BUSY && ddir_rw(ddir)) { |
394 | td->io_issues[ddir]--; | |
395 | td->io_issue_bytes[ddir] -= buflen; | |
50a8ce86 | 396 | td->rate_io_issue_bytes[ddir] -= buflen; |
871467d9 | 397 | io_u_clear(td, io_u, IO_U_F_FLIGHT); |
cd8a19e6 JA |
398 | } |
399 | ||
39a43d34 JA |
400 | /* |
401 | * If an error was seen and the io engine didn't propagate it | |
402 | * back to 'td', do so. | |
403 | */ | |
404 | if (io_u->error && !td->error) | |
405 | td_verror(td, io_u->error, "td_io_queue"); | |
406 | ||
cb211682 JA |
407 | /* |
408 | * Add warning for O_DIRECT so that users have an easier time | |
409 | * spotting potentially bad alignment. If this triggers for the first | |
410 | * IO, then it's likely an alignment problem or because the host fs | |
411 | * does not support O_DIRECT | |
412 | */ | |
ff58fced | 413 | if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 && |
cb211682 | 414 | td->o.odirect) { |
214ac7e0 | 415 | |
cb211682 | 416 | log_info("fio: first direct IO errored. File system may not " |
78d4a262 TK |
417 | "support direct IO, or iomem_align= is bad, or " |
418 | "invalid block size. Try setting direct=0.\n"); | |
cb211682 JA |
419 | } |
420 | ||
bfbdd35b BVA |
421 | if (zbd_unaligned_write(io_u->error) && |
422 | td->io_issues[io_u->ddir & 1] == 1 && | |
423 | td->o.zone_mode != ZONE_MODE_ZBD) { | |
424 | log_info("fio: first I/O failed. If %s is a zoned block device, consider --zonemode=zbd\n", | |
425 | io_u->file->file_name); | |
426 | } | |
427 | ||
c0681c9d | 428 | if (!td->io_ops->commit) { |
838bc709 JA |
429 | io_u_mark_submit(td, 1); |
430 | io_u_mark_complete(td, 1); | |
431 | } | |
432 | ||
d8005759 | 433 | if (ret == FIO_Q_COMPLETED) { |
00615bfb SW |
434 | if (ddir_rw(io_u->ddir) || |
435 | (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING)) { | |
d8005759 JA |
436 | io_u_mark_depth(td, 1); |
437 | td->ts.total_io_u[io_u->ddir]++; | |
6eaf09d6 | 438 | } |
d8005759 | 439 | } else if (ret == FIO_Q_QUEUED) { |
e6727cbd JA |
440 | td->io_u_queued++; |
441 | ||
00615bfb SW |
442 | if (ddir_rw(io_u->ddir) || |
443 | (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING)) | |
d8005759 | 444 | td->ts.total_io_u[io_u->ddir]++; |
d8005759 | 445 | |
a80cb54b BVA |
446 | if (td->io_u_queued >= td->o.iodepth_batch) |
447 | td_io_commit(td); | |
eb7c8ae2 | 448 | } |
cb5ab512 | 449 | |
04ba61df | 450 | if (!td_ioengine_flagged(td, FIO_SYNCIO) && |
d46b4565 | 451 | !async_ioengine_sync_trim(td, io_u)) { |
4e7e7898 | 452 | if (fio_fill_issue_time(td) && |
39f56400 | 453 | !td_ioengine_flagged(td, FIO_ASYNCIO_SETS_ISSUE_TIME)) { |
9520ebb9 | 454 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 | 455 | |
39f56400 VF |
456 | /* |
457 | * only used for iolog | |
458 | */ | |
459 | if (td->o.read_iolog_file) | |
460 | memcpy(&td->last_issue, &io_u->issue_time, | |
461 | sizeof(io_u->issue_time)); | |
462 | } | |
433afcb4 JA |
463 | } |
464 | ||
7e77dd02 | 465 | return ret; |
10ba535a | 466 | } |
8c16d840 JA |
467 | |
468 | int td_io_init(struct thread_data *td) | |
469 | { | |
eeb12160 | 470 | int ret = 0; |
8c16d840 | 471 | |
eeb12160 JA |
472 | if (td->io_ops->init) { |
473 | ret = td->io_ops->init(td); | |
356ef1a1 TK |
474 | if (ret) |
475 | log_err("fio: io engine %s init failed.%s\n", | |
476 | td->io_ops->name, | |
477 | td->o.iodepth > 1 ? | |
478 | " Perhaps try reducing io depth?" : ""); | |
479 | else | |
480 | td->io_ops_init = 1; | |
7c973896 JA |
481 | if (!td->error) |
482 | td->error = ret; | |
eeb12160 JA |
483 | } |
484 | ||
485 | return ret; | |
8c16d840 | 486 | } |
755200a3 | 487 | |
a80cb54b | 488 | void td_io_commit(struct thread_data *td) |
755200a3 | 489 | { |
f3e11d05 JA |
490 | int ret; |
491 | ||
ee56ad50 JA |
492 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
493 | ||
d8005759 | 494 | if (!td->cur_depth || !td->io_u_queued) |
a80cb54b | 495 | return; |
cb5ab512 | 496 | |
3fd9efbc | 497 | io_u_mark_depth(td, td->io_u_queued); |
d8005759 | 498 | |
f3e11d05 JA |
499 | if (td->io_ops->commit) { |
500 | ret = td->io_ops->commit(td); | |
501 | if (ret) | |
502 | td_verror(td, -ret, "io commit"); | |
503 | } | |
3fd9efbc | 504 | |
422f9e4b RM |
505 | /* |
506 | * Reflect that events were submitted as async IO requests. | |
507 | */ | |
508 | td->io_u_in_flight += td->io_u_queued; | |
509 | td->io_u_queued = 0; | |
755200a3 | 510 | } |
b5af8293 JA |
511 | |
512 | int td_io_open_file(struct thread_data *td, struct fio_file *f) | |
513 | { | |
230f33fb AK |
514 | if (fio_file_closing(f)) { |
515 | /* | |
516 | * Open translates to undo closing. | |
517 | */ | |
518 | fio_file_clear_closing(f); | |
519 | get_file(f); | |
520 | return 0; | |
521 | } | |
22a57ba8 JA |
522 | assert(!fio_file_open(f)); |
523 | assert(f->fd == -1); | |
966fcbd4 | 524 | assert(td->io_ops->open_file); |
22a57ba8 | 525 | |
413d6693 JA |
526 | if (td->io_ops->open_file(td, f)) { |
527 | if (td->error == EINVAL && td->o.odirect) | |
528 | log_err("fio: destination does not support O_DIRECT\n"); | |
5ec10eaa JA |
529 | if (td->error == EMFILE) { |
530 | log_err("fio: try reducing/setting openfiles (failed" | |
531 | " at %u of %u)\n", td->nr_open_files, | |
532 | td->o.nr_files); | |
533 | } | |
413d6693 | 534 | |
22a57ba8 JA |
535 | assert(f->fd == -1); |
536 | assert(!fio_file_open(f)); | |
413d6693 JA |
537 | return 1; |
538 | } | |
539 | ||
33c48814 | 540 | fio_file_reset(td, f); |
d6aed795 JA |
541 | fio_file_set_open(f); |
542 | fio_file_clear_closing(f); | |
c97bd0fa | 543 | disk_util_inc(f->du); |
d5707a35 JA |
544 | |
545 | td->nr_open_files++; | |
546 | get_file(f); | |
547 | ||
66159828 JA |
548 | if (f->filetype == FIO_TYPE_PIPE) { |
549 | if (td_random(td)) { | |
550 | log_err("fio: can't seek on pipes (no random io)\n"); | |
551 | goto err; | |
552 | } | |
553 | } | |
554 | ||
9b87f09b | 555 | if (td_ioengine_flagged(td, FIO_DISKLESSIO)) |
413d6693 JA |
556 | goto done; |
557 | ||
558 | if (td->o.invalidate_cache && file_invalidate_cache(td, f)) | |
559 | goto err; | |
560 | ||
ecb2083d | 561 | if (td->o.fadvise_hint != F_ADV_NONE && |
686fbd31 | 562 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
413d6693 JA |
563 | int flags; |
564 | ||
ecb2083d JA |
565 | if (td->o.fadvise_hint == F_ADV_TYPE) { |
566 | if (td_random(td)) | |
567 | flags = POSIX_FADV_RANDOM; | |
568 | else | |
569 | flags = POSIX_FADV_SEQUENTIAL; | |
570 | } else if (td->o.fadvise_hint == F_ADV_RANDOM) | |
413d6693 | 571 | flags = POSIX_FADV_RANDOM; |
ecb2083d | 572 | else if (td->o.fadvise_hint == F_ADV_SEQUENTIAL) |
413d6693 | 573 | flags = POSIX_FADV_SEQUENTIAL; |
638689b1 | 574 | #ifdef POSIX_FADV_NOREUSE |
eb314e70 YX |
575 | else if (td->o.fadvise_hint == F_ADV_NOREUSE) |
576 | flags = POSIX_FADV_NOREUSE; | |
638689b1 | 577 | #endif |
ecb2083d JA |
578 | else { |
579 | log_err("fio: unknown fadvise type %d\n", | |
580 | td->o.fadvise_hint); | |
581 | flags = POSIX_FADV_NORMAL; | |
582 | } | |
413d6693 | 583 | |
ecc314ba | 584 | if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) { |
825b0a75 JA |
585 | if (!fio_did_warn(FIO_WARN_FADVISE)) |
586 | log_err("fio: fadvise hint failed\n"); | |
413d6693 | 587 | } |
7bb48f84 | 588 | } |
ae8e559e JA |
589 | #ifdef FIO_HAVE_WRITE_HINT |
590 | if (fio_option_is_set(&td->o, write_hint) && | |
686fbd31 | 591 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
ae8e559e | 592 | uint64_t hint = td->o.write_hint; |
bd553af6 | 593 | int cmd; |
37659335 | 594 | |
bd553af6 JA |
595 | /* |
596 | * For direct IO, we just need/want to set the hint on | |
597 | * the file descriptor. For buffered IO, we need to set | |
598 | * it on the inode. | |
599 | */ | |
600 | if (td->o.odirect) | |
601 | cmd = F_SET_FILE_RW_HINT; | |
602 | else | |
603 | cmd = F_SET_RW_HINT; | |
604 | ||
605 | if (fcntl(f->fd, cmd, &hint) < 0) { | |
ae8e559e | 606 | td_verror(td, errno, "fcntl write hint"); |
37659335 JA |
607 | goto err; |
608 | } | |
609 | } | |
610 | #endif | |
a978ba68 | 611 | |
47534cda TK |
612 | if (td->o.odirect && !OS_O_DIRECT && fio_set_directio(td, f)) |
613 | goto err; | |
e116f2b9 | 614 | |
413d6693 | 615 | done: |
f29b25a3 | 616 | log_file(td, f, FIO_LOG_OPEN_FILE); |
413d6693 JA |
617 | return 0; |
618 | err: | |
c97bd0fa | 619 | disk_util_dec(f->du); |
b284075a JA |
620 | if (td->io_ops->close_file) |
621 | td->io_ops->close_file(td, f); | |
7bb48f84 | 622 | return 1; |
b5af8293 JA |
623 | } |
624 | ||
6977bcd0 | 625 | int td_io_close_file(struct thread_data *td, struct fio_file *f) |
b5af8293 | 626 | { |
d6aed795 | 627 | if (!fio_file_closing(f)) |
f29b25a3 JA |
628 | log_file(td, f, FIO_LOG_CLOSE_FILE); |
629 | ||
0ad920e7 JA |
630 | /* |
631 | * mark as closing, do real close when last io on it has completed | |
632 | */ | |
d6aed795 | 633 | fio_file_set_closing(f); |
0ad920e7 | 634 | |
6977bcd0 | 635 | return put_file(td, f); |
b5af8293 | 636 | } |
df9c26b1 | 637 | |
38ef9c90 CF |
638 | int td_io_unlink_file(struct thread_data *td, struct fio_file *f) |
639 | { | |
640 | if (td->io_ops->unlink_file) | |
641 | return td->io_ops->unlink_file(td, f); | |
2442c935 JA |
642 | else { |
643 | int ret; | |
644 | ||
645 | ret = unlink(f->file_name); | |
646 | if (ret < 0) | |
647 | return errno; | |
648 | ||
649 | return 0; | |
650 | } | |
38ef9c90 CF |
651 | } |
652 | ||
df9c26b1 JA |
653 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
654 | { | |
655 | if (!td->io_ops->get_file_size) | |
656 | return 0; | |
657 | ||
658 | return td->io_ops->get_file_size(td, f); | |
659 | } | |
44f29692 | 660 | |
35300d5f ES |
661 | #ifdef CONFIG_DYNAMIC_ENGINES |
662 | /* Load all dynamic engines in FIO_EXT_ENG_DIR for enghelp command */ | |
663 | static void | |
664 | fio_load_dynamic_engines(struct thread_data *td) | |
665 | { | |
666 | DIR *dirhandle = NULL; | |
667 | struct dirent *dirent = NULL; | |
668 | char engine_path[PATH_MAX]; | |
669 | ||
670 | dirhandle = opendir(FIO_EXT_ENG_DIR); | |
671 | if (!dirhandle) | |
672 | return; | |
673 | ||
674 | while ((dirent = readdir(dirhandle)) != NULL) { | |
675 | if (!strcmp(dirent->d_name, ".") || | |
676 | !strcmp(dirent->d_name, "..")) | |
677 | continue; | |
678 | ||
679 | sprintf(engine_path, "%s/%s", FIO_EXT_ENG_DIR, dirent->d_name); | |
680 | dlopen_ioengine(td, engine_path); | |
681 | } | |
682 | ||
683 | closedir(dirhandle); | |
684 | } | |
685 | #else | |
686 | #define fio_load_dynamic_engines(td) do { } while (0) | |
687 | #endif | |
688 | ||
de890a1e SL |
689 | int fio_show_ioengine_help(const char *engine) |
690 | { | |
691 | struct flist_head *entry; | |
d04f1d5b | 692 | struct thread_data td; |
755dcbbd | 693 | struct ioengine_ops *io_ops; |
de890a1e SL |
694 | char *sep; |
695 | int ret = 1; | |
696 | ||
35300d5f ES |
697 | memset(&td, 0, sizeof(struct thread_data)); |
698 | ||
de890a1e SL |
699 | if (!engine || !*engine) { |
700 | log_info("Available IO engines:\n"); | |
35300d5f | 701 | fio_load_dynamic_engines(&td); |
de890a1e | 702 | flist_for_each(entry, &engine_list) { |
755dcbbd TK |
703 | io_ops = flist_entry(entry, struct ioengine_ops, list); |
704 | log_info("\t%s\n", io_ops->name); | |
de890a1e SL |
705 | } |
706 | return 0; | |
707 | } | |
708 | sep = strchr(engine, ','); | |
709 | if (sep) { | |
710 | *sep = 0; | |
711 | sep++; | |
712 | } | |
713 | ||
d04f1d5b | 714 | td.o.ioengine = (char *)engine; |
2459bd33 | 715 | td.io_ops = load_ioengine(&td); |
d04f1d5b | 716 | |
2459bd33 | 717 | if (!td.io_ops) { |
de890a1e SL |
718 | log_info("IO engine %s not found\n", engine); |
719 | return 1; | |
720 | } | |
721 | ||
2459bd33 VF |
722 | if (td.io_ops->options) |
723 | ret = show_cmd_help(td.io_ops->options, sep); | |
de890a1e | 724 | else |
2459bd33 | 725 | log_info("IO engine %s has no options\n", td.io_ops->name); |
de890a1e | 726 | |
d04f1d5b | 727 | free_ioengine(&td); |
de890a1e SL |
728 | return ret; |
729 | } |