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); | |
913028e9 DP |
241 | if (td->o.use_thread) |
242 | td->eo = NULL; | |
2992b059 | 243 | } |
b990b5c0 | 244 | |
f6931a1d | 245 | if (td->io_ops->dlhandle) { |
48ff7df9 | 246 | dprint(FD_IO, "dlclose ioengine %s\n", td->io_ops->name); |
f6931a1d | 247 | dlclose(td->io_ops->dlhandle); |
9b50942e | 248 | } |
5f350952 | 249 | |
84585003 | 250 | td->io_ops = NULL; |
b990b5c0 | 251 | } |
10ba535a | 252 | |
de890a1e SL |
253 | void close_ioengine(struct thread_data *td) |
254 | { | |
255 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); | |
256 | ||
257 | if (td->io_ops->cleanup) { | |
258 | td->io_ops->cleanup(td); | |
565e784d | 259 | td->io_ops_data = NULL; |
de890a1e SL |
260 | } |
261 | ||
262 | free_ioengine(td); | |
263 | } | |
264 | ||
10ba535a JA |
265 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
266 | { | |
ee56ad50 | 267 | dprint_io_u(io_u, "prep"); |
7101d9c2 JA |
268 | fio_ro_check(td, io_u); |
269 | ||
4d4e80f2 | 270 | lock_file(td, io_u->file, io_u->ddir); |
b2bd2bd9 | 271 | |
2ba1c290 JA |
272 | if (td->io_ops->prep) { |
273 | int ret = td->io_ops->prep(td, io_u); | |
274 | ||
e5f9a813 RE |
275 | dprint(FD_IO, "prep: io_u %p: ret=%d\n", io_u, ret); |
276 | ||
b2bd2bd9 | 277 | if (ret) |
4d4e80f2 | 278 | unlock_file(td, io_u->file); |
2ba1c290 JA |
279 | return ret; |
280 | } | |
10ba535a JA |
281 | |
282 | return 0; | |
283 | } | |
284 | ||
e7d2e616 | 285 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
1f440ece | 286 | const struct timespec *t) |
10ba535a | 287 | { |
ee56ad50 | 288 | int r = 0; |
face81b2 | 289 | |
a05d62b2 YR |
290 | /* |
291 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, | |
292 | * server side gets a message from the client | |
293 | * side that the task is finished, and | |
294 | * td->done is set to 1 after td_io_commit(). In this case, | |
295 | * there is no need to reap complete event in server side. | |
296 | */ | |
297 | if (td->done) | |
298 | return 0; | |
299 | ||
ee56ad50 JA |
300 | if (min > 0 && td->io_ops->commit) { |
301 | r = td->io_ops->commit(td); | |
face81b2 | 302 | if (r < 0) |
ee56ad50 | 303 | goto out; |
face81b2 | 304 | } |
4950421a JA |
305 | if (max > td->cur_depth) |
306 | max = td->cur_depth; | |
307 | if (min > max) | |
308 | max = min; | |
36167d82 | 309 | |
ee56ad50 | 310 | r = 0; |
4950421a | 311 | if (max && td->io_ops->getevents) |
ee56ad50 JA |
312 | r = td->io_ops->getevents(td, min, max, t); |
313 | out: | |
422f9e4b RM |
314 | if (r >= 0) { |
315 | /* | |
3fd9efbc | 316 | * Reflect that our submitted requests were retrieved with |
422f9e4b RM |
317 | * whatever OS async calls are in the underlying engine. |
318 | */ | |
319 | td->io_u_in_flight -= r; | |
838bc709 | 320 | io_u_mark_complete(td, r); |
422f9e4b | 321 | } else |
7c639b14 | 322 | td_verror(td, r, "get_events"); |
f3e11d05 | 323 | |
ee56ad50 JA |
324 | dprint(FD_IO, "getevents: %d\n", r); |
325 | return r; | |
10ba535a JA |
326 | } |
327 | ||
d3b07186 | 328 | enum fio_q_status td_io_queue(struct thread_data *td, struct io_u *io_u) |
10ba535a | 329 | { |
a9da8ab2 | 330 | const enum fio_ddir ddir = acct_ddir(io_u); |
5fff9543 | 331 | unsigned long long buflen = io_u->xfer_buflen; |
d3b07186 | 332 | enum fio_q_status ret; |
7e77dd02 | 333 | |
ee56ad50 | 334 | dprint_io_u(io_u, "queue"); |
7101d9c2 JA |
335 | fio_ro_check(td, io_u); |
336 | ||
0c6e7517 | 337 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
1651e431 | 338 | io_u_set(td, io_u, IO_U_F_FLIGHT); |
817ae977 VF |
339 | |
340 | /* | |
341 | * If overlap checking was enabled in offload mode we | |
342 | * can release this lock that was acquired when we | |
343 | * started the overlap check because the IO_U_F_FLIGHT | |
344 | * flag is now set | |
345 | */ | |
14520f23 | 346 | if (td_offload_overlap(td)) { |
83276370 DP |
347 | int res; |
348 | ||
349 | res = pthread_mutex_unlock(&overlap_check); | |
350 | if (fio_unlikely(res != 0)) { | |
351 | log_err("failed to unlock overlap check mutex, err: %i:%s", errno, strerror(errno)); | |
352 | abort(); | |
353 | } | |
a38c70a8 | 354 | } |
0c6e7517 | 355 | |
d6aed795 | 356 | assert(fio_file_open(io_u->file)); |
3d7b485f | 357 | |
bcd5abfa JA |
358 | /* |
359 | * If using a write iolog, store this entry. | |
360 | */ | |
361 | log_io_u(td, io_u); | |
362 | ||
11786802 JA |
363 | io_u->error = 0; |
364 | io_u->resid = 0; | |
365 | ||
04ba61df | 366 | if (td_ioengine_flagged(td, FIO_SYNCIO) || |
d46b4565 | 367 | async_ioengine_sync_trim(td, io_u)) { |
39f56400 | 368 | if (fio_fill_issue_time(td)) { |
9520ebb9 | 369 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 | 370 | |
39f56400 VF |
371 | /* |
372 | * only used for iolog | |
373 | */ | |
374 | if (td->o.read_iolog_file) | |
375 | memcpy(&td->last_issue, &io_u->issue_time, | |
376 | sizeof(io_u->issue_time)); | |
377 | } | |
433afcb4 JA |
378 | } |
379 | ||
b2a432bf | 380 | |
a9da8ab2 | 381 | if (ddir_rw(ddir)) { |
a7d01f02 JA |
382 | if (!(io_u->flags & IO_U_F_VER_LIST)) { |
383 | td->io_issues[ddir]++; | |
384 | td->io_issue_bytes[ddir] += buflen; | |
385 | } | |
50a8ce86 | 386 | td->rate_io_issue_bytes[ddir] += buflen; |
74d6277f | 387 | } |
755200a3 | 388 | |
7e77dd02 | 389 | ret = td->io_ops->queue(td, io_u); |
b2da58c4 | 390 | zbd_queue_io_u(td, io_u, ret); |
5aeb77df | 391 | |
4d4e80f2 | 392 | unlock_file(td, io_u->file); |
b2bd2bd9 | 393 | |
a9da8ab2 JA |
394 | if (ret == FIO_Q_BUSY && ddir_rw(ddir)) { |
395 | td->io_issues[ddir]--; | |
396 | td->io_issue_bytes[ddir] -= buflen; | |
50a8ce86 | 397 | td->rate_io_issue_bytes[ddir] -= buflen; |
871467d9 | 398 | io_u_clear(td, io_u, IO_U_F_FLIGHT); |
cd8a19e6 JA |
399 | } |
400 | ||
39a43d34 JA |
401 | /* |
402 | * If an error was seen and the io engine didn't propagate it | |
403 | * back to 'td', do so. | |
404 | */ | |
405 | if (io_u->error && !td->error) | |
406 | td_verror(td, io_u->error, "td_io_queue"); | |
407 | ||
cb211682 JA |
408 | /* |
409 | * Add warning for O_DIRECT so that users have an easier time | |
410 | * spotting potentially bad alignment. If this triggers for the first | |
411 | * IO, then it's likely an alignment problem or because the host fs | |
412 | * does not support O_DIRECT | |
413 | */ | |
ff58fced | 414 | if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 && |
cb211682 | 415 | td->o.odirect) { |
214ac7e0 | 416 | |
cb211682 | 417 | log_info("fio: first direct IO errored. File system may not " |
78d4a262 TK |
418 | "support direct IO, or iomem_align= is bad, or " |
419 | "invalid block size. Try setting direct=0.\n"); | |
cb211682 JA |
420 | } |
421 | ||
bfbdd35b BVA |
422 | if (zbd_unaligned_write(io_u->error) && |
423 | td->io_issues[io_u->ddir & 1] == 1 && | |
424 | td->o.zone_mode != ZONE_MODE_ZBD) { | |
425 | log_info("fio: first I/O failed. If %s is a zoned block device, consider --zonemode=zbd\n", | |
426 | io_u->file->file_name); | |
427 | } | |
428 | ||
c0681c9d | 429 | if (!td->io_ops->commit) { |
838bc709 JA |
430 | io_u_mark_submit(td, 1); |
431 | io_u_mark_complete(td, 1); | |
432 | } | |
433 | ||
d8005759 | 434 | if (ret == FIO_Q_COMPLETED) { |
00615bfb SW |
435 | if (ddir_rw(io_u->ddir) || |
436 | (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING)) { | |
d8005759 JA |
437 | io_u_mark_depth(td, 1); |
438 | td->ts.total_io_u[io_u->ddir]++; | |
6eaf09d6 | 439 | } |
d8005759 | 440 | } else if (ret == FIO_Q_QUEUED) { |
e6727cbd JA |
441 | td->io_u_queued++; |
442 | ||
00615bfb SW |
443 | if (ddir_rw(io_u->ddir) || |
444 | (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING)) | |
d8005759 | 445 | td->ts.total_io_u[io_u->ddir]++; |
d8005759 | 446 | |
a80cb54b BVA |
447 | if (td->io_u_queued >= td->o.iodepth_batch) |
448 | td_io_commit(td); | |
eb7c8ae2 | 449 | } |
cb5ab512 | 450 | |
04ba61df | 451 | if (!td_ioengine_flagged(td, FIO_SYNCIO) && |
d46b4565 | 452 | !async_ioengine_sync_trim(td, io_u)) { |
4e7e7898 | 453 | if (fio_fill_issue_time(td) && |
39f56400 | 454 | !td_ioengine_flagged(td, FIO_ASYNCIO_SETS_ISSUE_TIME)) { |
9520ebb9 | 455 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 | 456 | |
39f56400 VF |
457 | /* |
458 | * only used for iolog | |
459 | */ | |
460 | if (td->o.read_iolog_file) | |
461 | memcpy(&td->last_issue, &io_u->issue_time, | |
462 | sizeof(io_u->issue_time)); | |
463 | } | |
433afcb4 JA |
464 | } |
465 | ||
7e77dd02 | 466 | return ret; |
10ba535a | 467 | } |
8c16d840 JA |
468 | |
469 | int td_io_init(struct thread_data *td) | |
470 | { | |
eeb12160 | 471 | int ret = 0; |
8c16d840 | 472 | |
eeb12160 JA |
473 | if (td->io_ops->init) { |
474 | ret = td->io_ops->init(td); | |
356ef1a1 TK |
475 | if (ret) |
476 | log_err("fio: io engine %s init failed.%s\n", | |
477 | td->io_ops->name, | |
478 | td->o.iodepth > 1 ? | |
479 | " Perhaps try reducing io depth?" : ""); | |
480 | else | |
481 | td->io_ops_init = 1; | |
7c973896 JA |
482 | if (!td->error) |
483 | td->error = ret; | |
eeb12160 JA |
484 | } |
485 | ||
486 | return ret; | |
8c16d840 | 487 | } |
755200a3 | 488 | |
a80cb54b | 489 | void td_io_commit(struct thread_data *td) |
755200a3 | 490 | { |
f3e11d05 JA |
491 | int ret; |
492 | ||
ee56ad50 JA |
493 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
494 | ||
d8005759 | 495 | if (!td->cur_depth || !td->io_u_queued) |
a80cb54b | 496 | return; |
cb5ab512 | 497 | |
3fd9efbc | 498 | io_u_mark_depth(td, td->io_u_queued); |
d8005759 | 499 | |
f3e11d05 JA |
500 | if (td->io_ops->commit) { |
501 | ret = td->io_ops->commit(td); | |
502 | if (ret) | |
503 | td_verror(td, -ret, "io commit"); | |
504 | } | |
3fd9efbc | 505 | |
422f9e4b RM |
506 | /* |
507 | * Reflect that events were submitted as async IO requests. | |
508 | */ | |
509 | td->io_u_in_flight += td->io_u_queued; | |
510 | td->io_u_queued = 0; | |
755200a3 | 511 | } |
b5af8293 JA |
512 | |
513 | int td_io_open_file(struct thread_data *td, struct fio_file *f) | |
514 | { | |
230f33fb AK |
515 | if (fio_file_closing(f)) { |
516 | /* | |
517 | * Open translates to undo closing. | |
518 | */ | |
519 | fio_file_clear_closing(f); | |
520 | get_file(f); | |
521 | return 0; | |
522 | } | |
22a57ba8 JA |
523 | assert(!fio_file_open(f)); |
524 | assert(f->fd == -1); | |
966fcbd4 | 525 | assert(td->io_ops->open_file); |
22a57ba8 | 526 | |
413d6693 JA |
527 | if (td->io_ops->open_file(td, f)) { |
528 | if (td->error == EINVAL && td->o.odirect) | |
529 | log_err("fio: destination does not support O_DIRECT\n"); | |
5ec10eaa JA |
530 | if (td->error == EMFILE) { |
531 | log_err("fio: try reducing/setting openfiles (failed" | |
532 | " at %u of %u)\n", td->nr_open_files, | |
533 | td->o.nr_files); | |
534 | } | |
413d6693 | 535 | |
22a57ba8 JA |
536 | assert(f->fd == -1); |
537 | assert(!fio_file_open(f)); | |
413d6693 JA |
538 | return 1; |
539 | } | |
540 | ||
33c48814 | 541 | fio_file_reset(td, f); |
d6aed795 JA |
542 | fio_file_set_open(f); |
543 | fio_file_clear_closing(f); | |
c97bd0fa | 544 | disk_util_inc(f->du); |
d5707a35 JA |
545 | |
546 | td->nr_open_files++; | |
547 | get_file(f); | |
548 | ||
66159828 JA |
549 | if (f->filetype == FIO_TYPE_PIPE) { |
550 | if (td_random(td)) { | |
551 | log_err("fio: can't seek on pipes (no random io)\n"); | |
552 | goto err; | |
553 | } | |
554 | } | |
555 | ||
9b87f09b | 556 | if (td_ioengine_flagged(td, FIO_DISKLESSIO)) |
413d6693 JA |
557 | goto done; |
558 | ||
559 | if (td->o.invalidate_cache && file_invalidate_cache(td, f)) | |
560 | goto err; | |
561 | ||
ecb2083d | 562 | if (td->o.fadvise_hint != F_ADV_NONE && |
686fbd31 | 563 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
413d6693 JA |
564 | int flags; |
565 | ||
ecb2083d JA |
566 | if (td->o.fadvise_hint == F_ADV_TYPE) { |
567 | if (td_random(td)) | |
568 | flags = POSIX_FADV_RANDOM; | |
569 | else | |
570 | flags = POSIX_FADV_SEQUENTIAL; | |
571 | } else if (td->o.fadvise_hint == F_ADV_RANDOM) | |
413d6693 | 572 | flags = POSIX_FADV_RANDOM; |
ecb2083d | 573 | else if (td->o.fadvise_hint == F_ADV_SEQUENTIAL) |
413d6693 | 574 | flags = POSIX_FADV_SEQUENTIAL; |
638689b1 | 575 | #ifdef POSIX_FADV_NOREUSE |
eb314e70 YX |
576 | else if (td->o.fadvise_hint == F_ADV_NOREUSE) |
577 | flags = POSIX_FADV_NOREUSE; | |
638689b1 | 578 | #endif |
ecb2083d JA |
579 | else { |
580 | log_err("fio: unknown fadvise type %d\n", | |
581 | td->o.fadvise_hint); | |
582 | flags = POSIX_FADV_NORMAL; | |
583 | } | |
413d6693 | 584 | |
ecc314ba | 585 | if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) { |
825b0a75 JA |
586 | if (!fio_did_warn(FIO_WARN_FADVISE)) |
587 | log_err("fio: fadvise hint failed\n"); | |
413d6693 | 588 | } |
7bb48f84 | 589 | } |
ae8e559e JA |
590 | #ifdef FIO_HAVE_WRITE_HINT |
591 | if (fio_option_is_set(&td->o, write_hint) && | |
686fbd31 | 592 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
ae8e559e | 593 | uint64_t hint = td->o.write_hint; |
bd553af6 | 594 | int cmd; |
37659335 | 595 | |
bd553af6 JA |
596 | /* |
597 | * For direct IO, we just need/want to set the hint on | |
598 | * the file descriptor. For buffered IO, we need to set | |
599 | * it on the inode. | |
600 | */ | |
601 | if (td->o.odirect) | |
602 | cmd = F_SET_FILE_RW_HINT; | |
603 | else | |
604 | cmd = F_SET_RW_HINT; | |
605 | ||
606 | if (fcntl(f->fd, cmd, &hint) < 0) { | |
ae8e559e | 607 | td_verror(td, errno, "fcntl write hint"); |
37659335 JA |
608 | goto err; |
609 | } | |
610 | } | |
611 | #endif | |
a978ba68 | 612 | |
47534cda TK |
613 | if (td->o.odirect && !OS_O_DIRECT && fio_set_directio(td, f)) |
614 | goto err; | |
e116f2b9 | 615 | |
413d6693 | 616 | done: |
f29b25a3 | 617 | log_file(td, f, FIO_LOG_OPEN_FILE); |
413d6693 JA |
618 | return 0; |
619 | err: | |
c97bd0fa | 620 | disk_util_dec(f->du); |
b284075a JA |
621 | if (td->io_ops->close_file) |
622 | td->io_ops->close_file(td, f); | |
7bb48f84 | 623 | return 1; |
b5af8293 JA |
624 | } |
625 | ||
6977bcd0 | 626 | int td_io_close_file(struct thread_data *td, struct fio_file *f) |
b5af8293 | 627 | { |
d6aed795 | 628 | if (!fio_file_closing(f)) |
f29b25a3 JA |
629 | log_file(td, f, FIO_LOG_CLOSE_FILE); |
630 | ||
0ad920e7 JA |
631 | /* |
632 | * mark as closing, do real close when last io on it has completed | |
633 | */ | |
d6aed795 | 634 | fio_file_set_closing(f); |
0ad920e7 | 635 | |
6977bcd0 | 636 | return put_file(td, f); |
b5af8293 | 637 | } |
df9c26b1 | 638 | |
38ef9c90 CF |
639 | int td_io_unlink_file(struct thread_data *td, struct fio_file *f) |
640 | { | |
641 | if (td->io_ops->unlink_file) | |
642 | return td->io_ops->unlink_file(td, f); | |
2442c935 JA |
643 | else { |
644 | int ret; | |
645 | ||
646 | ret = unlink(f->file_name); | |
647 | if (ret < 0) | |
648 | return errno; | |
649 | ||
650 | return 0; | |
651 | } | |
38ef9c90 CF |
652 | } |
653 | ||
df9c26b1 JA |
654 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
655 | { | |
656 | if (!td->io_ops->get_file_size) | |
657 | return 0; | |
658 | ||
659 | return td->io_ops->get_file_size(td, f); | |
660 | } | |
44f29692 | 661 | |
35300d5f ES |
662 | #ifdef CONFIG_DYNAMIC_ENGINES |
663 | /* Load all dynamic engines in FIO_EXT_ENG_DIR for enghelp command */ | |
664 | static void | |
665 | fio_load_dynamic_engines(struct thread_data *td) | |
666 | { | |
667 | DIR *dirhandle = NULL; | |
668 | struct dirent *dirent = NULL; | |
669 | char engine_path[PATH_MAX]; | |
670 | ||
671 | dirhandle = opendir(FIO_EXT_ENG_DIR); | |
672 | if (!dirhandle) | |
673 | return; | |
674 | ||
675 | while ((dirent = readdir(dirhandle)) != NULL) { | |
676 | if (!strcmp(dirent->d_name, ".") || | |
677 | !strcmp(dirent->d_name, "..")) | |
678 | continue; | |
679 | ||
680 | sprintf(engine_path, "%s/%s", FIO_EXT_ENG_DIR, dirent->d_name); | |
681 | dlopen_ioengine(td, engine_path); | |
682 | } | |
683 | ||
684 | closedir(dirhandle); | |
685 | } | |
686 | #else | |
687 | #define fio_load_dynamic_engines(td) do { } while (0) | |
688 | #endif | |
689 | ||
de890a1e SL |
690 | int fio_show_ioengine_help(const char *engine) |
691 | { | |
692 | struct flist_head *entry; | |
d04f1d5b | 693 | struct thread_data td; |
755dcbbd | 694 | struct ioengine_ops *io_ops; |
de890a1e SL |
695 | char *sep; |
696 | int ret = 1; | |
697 | ||
35300d5f ES |
698 | memset(&td, 0, sizeof(struct thread_data)); |
699 | ||
de890a1e SL |
700 | if (!engine || !*engine) { |
701 | log_info("Available IO engines:\n"); | |
35300d5f | 702 | fio_load_dynamic_engines(&td); |
de890a1e | 703 | flist_for_each(entry, &engine_list) { |
755dcbbd TK |
704 | io_ops = flist_entry(entry, struct ioengine_ops, list); |
705 | log_info("\t%s\n", io_ops->name); | |
de890a1e SL |
706 | } |
707 | return 0; | |
708 | } | |
709 | sep = strchr(engine, ','); | |
710 | if (sep) { | |
711 | *sep = 0; | |
712 | sep++; | |
713 | } | |
714 | ||
d04f1d5b | 715 | td.o.ioengine = (char *)engine; |
2459bd33 | 716 | td.io_ops = load_ioengine(&td); |
d04f1d5b | 717 | |
2459bd33 | 718 | if (!td.io_ops) { |
de890a1e SL |
719 | log_info("IO engine %s not found\n", engine); |
720 | return 1; | |
721 | } | |
722 | ||
2459bd33 VF |
723 | if (td.io_ops->options) |
724 | ret = show_cmd_help(td.io_ops->options, sep); | |
de890a1e | 725 | else |
2459bd33 | 726 | log_info("IO engine %s has no options\n", td.io_ops->name); |
de890a1e | 727 | |
d04f1d5b | 728 | free_ioengine(&td); |
de890a1e SL |
729 | return ret; |
730 | } |