blob: d71e372048112e19010c1dd494a7a4b2872eb5fa [file] [log] [blame]
Jens Axboeebac4652005-12-08 15:25:21 +01001/*
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 */
12#include <stdio.h>
13#include <stdlib.h>
14#include <unistd.h>
Jens Axboe5c4e1db2006-06-07 14:17:08 +020015#include <string.h>
Jens Axboe2866c822006-10-09 15:57:48 +020016#include <dlfcn.h>
Bruce Cranecc314b2011-01-04 10:59:30 +010017#include <fcntl.h>
Jens Axboe0c6e7512007-02-22 11:19:39 +010018#include <assert.h>
Jens Axboe8c16d842006-10-20 11:48:33 +020019
Jens Axboeebac4652005-12-08 15:25:21 +010020#include "fio.h"
Jens Axboe7c9b1bc2009-06-03 09:25:57 +020021#include "diskutil.h"
Jens Axboeebac4652005-12-08 15:25:21 +010022
Jens Axboe01743ee2008-06-02 12:19:19 +020023static FLIST_HEAD(engine_list);
Jens Axboe5f350952006-11-07 15:20:59 +010024
Jens Axboe8c16d842006-10-20 11:48:33 +020025static int check_engine_ops(struct ioengine_ops *ops)
26{
Jens Axboe5f350952006-11-07 15:20:59 +010027 if (ops->version != FIO_IOOPS_VERSION) {
Jens Axboe5ec10ea2008-03-06 15:42:00 +010028 log_err("bad ioops version %d (want %d)\n", ops->version,
29 FIO_IOOPS_VERSION);
Jens Axboe5f350952006-11-07 15:20:59 +010030 return 1;
31 }
32
Jens Axboe36167d82007-02-18 05:41:31 +010033 if (!ops->queue) {
34 log_err("%s: no queue handler\n", ops->name);
35 return 1;
36 }
37
38 /*
39 * sync engines only need a ->queue()
40 */
41 if (ops->flags & FIO_SYNCIO)
42 return 0;
Jens Axboe5ec10ea2008-03-06 15:42:00 +010043
Jens Axboe8c16d842006-10-20 11:48:33 +020044 if (!ops->event) {
Jens Axboe36167d82007-02-18 05:41:31 +010045 log_err("%s: no event handler\n", ops->name);
Jens Axboe8c16d842006-10-20 11:48:33 +020046 return 1;
47 }
48 if (!ops->getevents) {
Jens Axboe36167d82007-02-18 05:41:31 +010049 log_err("%s: no getevents handler\n", ops->name);
Jens Axboe8c16d842006-10-20 11:48:33 +020050 return 1;
51 }
52 if (!ops->queue) {
Jens Axboe36167d82007-02-18 05:41:31 +010053 log_err("%s: no queue handler\n", ops->name);
Jens Axboe8c16d842006-10-20 11:48:33 +020054 return 1;
55 }
Jens Axboe5ec10ea2008-03-06 15:42:00 +010056
Jens Axboe8c16d842006-10-20 11:48:33 +020057 return 0;
58}
59
Jens Axboe5f350952006-11-07 15:20:59 +010060void unregister_ioengine(struct ioengine_ops *ops)
Jens Axboeebac4652005-12-08 15:25:21 +010061{
Jens Axboeee56ad52008-02-01 10:30:20 +010062 dprint(FD_IO, "ioengine %s unregistered\n", ops->name);
Jens Axboe01743ee2008-06-02 12:19:19 +020063 flist_del(&ops->list);
64 INIT_FLIST_HEAD(&ops->list);
Jens Axboe5f350952006-11-07 15:20:59 +010065}
66
Jens Axboeb2fdda42007-02-20 20:52:51 +010067void register_ioengine(struct ioengine_ops *ops)
Jens Axboe5f350952006-11-07 15:20:59 +010068{
Jens Axboeee56ad52008-02-01 10:30:20 +010069 dprint(FD_IO, "ioengine %s registered\n", ops->name);
Jens Axboe01743ee2008-06-02 12:19:19 +020070 INIT_FLIST_HEAD(&ops->list);
71 flist_add_tail(&ops->list, &engine_list);
Jens Axboe5f350952006-11-07 15:20:59 +010072}
73
74static struct ioengine_ops *find_ioengine(const char *name)
75{
76 struct ioengine_ops *ops;
Jens Axboe01743ee2008-06-02 12:19:19 +020077 struct flist_head *entry;
Jens Axboe2866c822006-10-09 15:57:48 +020078
Jens Axboe01743ee2008-06-02 12:19:19 +020079 flist_for_each(entry, &engine_list) {
80 ops = flist_entry(entry, struct ioengine_ops, list);
Jens Axboebc5b77a2007-02-28 09:32:54 +010081 if (!strcmp(name, ops->name))
Jens Axboe5f350952006-11-07 15:20:59 +010082 return ops;
83 }
84
85 return NULL;
86}
87
88static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
89 const char *engine_lib)
90{
91 struct ioengine_ops *ops;
92 void *dlhandle;
93
Jens Axboeee56ad52008-02-01 10:30:20 +010094 dprint(FD_IO, "dload engine %s\n", engine_lib);
95
Jens Axboe2866c822006-10-09 15:57:48 +020096 dlerror();
97 dlhandle = dlopen(engine_lib, RTLD_LAZY);
Jens Axboed4dbaaa2006-10-09 16:01:27 +020098 if (!dlhandle) {
Jens Axboee1161c32007-02-22 19:36:48 +010099 td_vmsg(td, -1, dlerror(), "dlopen");
Jens Axboed4dbaaa2006-10-09 16:01:27 +0200100 return NULL;
101 }
Jens Axboe2866c822006-10-09 15:57:48 +0200102
Jens Axboeda51c052006-11-07 16:02:11 +0100103 /*
104 * Unlike the included modules, external engines should have a
105 * non-static ioengine structure that we can reference.
106 */
Dmitry Monakhov0abea0b2012-09-19 23:22:54 +0400107 ops = dlsym(dlhandle, engine_lib);
108 if (!ops)
109 ops = dlsym(dlhandle, "ioengine");
Jens Axboed4dbaaa2006-10-09 16:01:27 +0200110 if (!ops) {
Jens Axboee1161c32007-02-22 19:36:48 +0100111 td_vmsg(td, -1, dlerror(), "dlsym");
Jens Axboed4dbaaa2006-10-09 16:01:27 +0200112 dlclose(dlhandle);
113 return NULL;
114 }
Jens Axboe2866c822006-10-09 15:57:48 +0200115
Jens Axboe5f350952006-11-07 15:20:59 +0100116 ops->dlhandle = dlhandle;
117 return ops;
118}
119
120struct ioengine_ops *load_ioengine(struct thread_data *td, const char *name)
121{
122 struct ioengine_ops *ops, *ret;
123 char engine[16];
124
Jens Axboeee56ad52008-02-01 10:30:20 +0100125 dprint(FD_IO, "load ioengine %s\n", name);
126
Jens Axboe5f350952006-11-07 15:20:59 +0100127 strncpy(engine, name, sizeof(engine) - 1);
128
129 /*
130 * linux libaio has alias names, so convert to what we want
131 */
132 if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3))
133 strcpy(engine, "libaio");
134
135 ops = find_ioengine(engine);
136 if (!ops)
137 ops = dlopen_ioengine(td, name);
138
139 if (!ops) {
140 log_err("fio: engine %s not loadable\n", name);
Jens Axboeb902ceb2006-10-09 16:11:45 +0200141 return NULL;
142 }
143
Jens Axboe8c16d842006-10-20 11:48:33 +0200144 /*
145 * Check that the required methods are there.
146 */
Jens Axboe5f350952006-11-07 15:20:59 +0100147 if (check_engine_ops(ops))
Jens Axboe8c16d842006-10-20 11:48:33 +0200148 return NULL;
Jens Axboe8c16d842006-10-20 11:48:33 +0200149
Jens Axboe84585002006-10-19 20:26:22 +0200150 ret = malloc(sizeof(*ret));
151 memcpy(ret, ops, sizeof(*ret));
152 ret->data = NULL;
Jens Axboe84585002006-10-19 20:26:22 +0200153
154 return ret;
Jens Axboeebac4652005-12-08 15:25:21 +0100155}
156
Steven Langde890a12011-11-09 14:03:34 +0100157/*
158 * For cleaning up an ioengine which never made it to init().
159 */
160void free_ioengine(struct thread_data *td)
161{
162 dprint(FD_IO, "free ioengine %s\n", td->io_ops->name);
163
164 if (td->eo && td->io_ops->options) {
165 options_free(td->io_ops->options, td->eo);
166 free(td->eo);
167 td->eo = NULL;
168 }
169
170 if (td->io_ops->dlhandle)
171 dlclose(td->io_ops->dlhandle);
172
173 free(td->io_ops);
174 td->io_ops = NULL;
175}
176
Jens Axboe2866c822006-10-09 15:57:48 +0200177void close_ioengine(struct thread_data *td)
Jens Axboeebac4652005-12-08 15:25:21 +0100178{
Jens Axboeee56ad52008-02-01 10:30:20 +0100179 dprint(FD_IO, "close ioengine %s\n", td->io_ops->name);
180
Jens Axboe2992b052008-05-30 22:07:12 +0200181 if (td->io_ops->cleanup) {
Jens Axboe2866c822006-10-09 15:57:48 +0200182 td->io_ops->cleanup(td);
Jens Axboe2992b052008-05-30 22:07:12 +0200183 td->io_ops->data = NULL;
184 }
Jens Axboeebac4652005-12-08 15:25:21 +0100185
Steven Langde890a12011-11-09 14:03:34 +0100186 free_ioengine(td);
Jens Axboeb990b5c2006-09-14 09:48:22 +0200187}
Jens Axboe10ba5352006-10-20 11:39:27 +0200188
189int td_io_prep(struct thread_data *td, struct io_u *io_u)
190{
Jens Axboeee56ad52008-02-01 10:30:20 +0100191 dprint_io_u(io_u, "prep");
Jens Axboe7101d9c2007-09-12 13:12:39 +0200192 fio_ro_check(td, io_u);
193
Jens Axboe4d4e80f2008-03-04 10:18:56 +0100194 lock_file(td, io_u->file, io_u->ddir);
Jens Axboeb2bd2bd2008-03-01 18:19:52 +0100195
Jens Axboe2ba1c292008-02-01 13:16:38 +0100196 if (td->io_ops->prep) {
197 int ret = td->io_ops->prep(td, io_u);
198
199 dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret);
Jens Axboeb2bd2bd2008-03-01 18:19:52 +0100200 if (ret)
Jens Axboe4d4e80f2008-03-04 10:18:56 +0100201 unlock_file(td, io_u->file);
Jens Axboe2ba1c292008-02-01 13:16:38 +0100202 return ret;
203 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200204
205 return 0;
206}
207
Jens Axboee7d2e612007-12-11 10:49:39 +0100208int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max,
Jens Axboe10ba5352006-10-20 11:39:27 +0200209 struct timespec *t)
210{
Jens Axboeee56ad52008-02-01 10:30:20 +0100211 int r = 0;
212
Yufei Rena05d62b2012-03-15 14:44:47 +0100213 /*
214 * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ,
215 * server side gets a message from the client
216 * side that the task is finished, and
217 * td->done is set to 1 after td_io_commit(). In this case,
218 * there is no need to reap complete event in server side.
219 */
220 if (td->done)
221 return 0;
222
Jens Axboeface81b2007-02-26 10:40:03 +0100223 if (min > 0 && td->io_ops->commit) {
Jens Axboeee56ad52008-02-01 10:30:20 +0100224 r = td->io_ops->commit(td);
Jens Axboeface81b2007-02-26 10:40:03 +0100225 if (r < 0)
Jens Axboeee56ad52008-02-01 10:30:20 +0100226 goto out;
Jens Axboeface81b2007-02-26 10:40:03 +0100227 }
Jens Axboe49504212008-06-05 09:03:30 +0200228 if (max > td->cur_depth)
229 max = td->cur_depth;
230 if (min > max)
231 max = min;
Jens Axboe36167d82007-02-18 05:41:31 +0100232
Jens Axboeee56ad52008-02-01 10:30:20 +0100233 r = 0;
Jens Axboe49504212008-06-05 09:03:30 +0200234 if (max && td->io_ops->getevents)
Jens Axboeee56ad52008-02-01 10:30:20 +0100235 r = td->io_ops->getevents(td, min, max, t);
236out:
Ryan Marchand422f9e42012-01-31 14:05:32 +0100237 if (r >= 0) {
238 /*
Jens Axboe3fd9efb2013-04-11 08:53:24 +0200239 * Reflect that our submitted requests were retrieved with
Ryan Marchand422f9e42012-01-31 14:05:32 +0100240 * whatever OS async calls are in the underlying engine.
241 */
242 td->io_u_in_flight -= r;
Jens Axboe838bc702008-05-22 13:08:23 +0200243 io_u_mark_complete(td, r);
Ryan Marchand422f9e42012-01-31 14:05:32 +0100244 } else
Jens Axboe7c639b12010-03-19 08:48:05 +0100245 td_verror(td, r, "get_events");
Jens Axboef3e11d02010-03-18 19:31:06 +0100246
Jens Axboeee56ad52008-02-01 10:30:20 +0100247 dprint(FD_IO, "getevents: %d\n", r);
248 return r;
Jens Axboe10ba5352006-10-20 11:39:27 +0200249}
250
251int td_io_queue(struct thread_data *td, struct io_u *io_u)
252{
Jens Axboe7e77dd02007-02-20 10:57:34 +0100253 int ret;
254
Jens Axboeee56ad52008-02-01 10:30:20 +0100255 dprint_io_u(io_u, "queue");
Jens Axboe7101d9c2007-09-12 13:12:39 +0200256 fio_ro_check(td, io_u);
257
Jens Axboe0c6e7512007-02-22 11:19:39 +0100258 assert((io_u->flags & IO_U_F_FLIGHT) == 0);
259 io_u->flags |= IO_U_F_FLIGHT;
260
Jens Axboed6aed792009-06-03 08:41:15 +0200261 assert(fio_file_open(io_u->file));
Jens Axboe3d7b4852007-03-13 14:50:28 +0100262
Jens Axboebcd5abf2013-01-23 09:27:25 -0700263 /*
264 * If using a write iolog, store this entry.
265 */
266 log_io_u(td, io_u);
267
Jens Axboe11786802007-03-05 18:33:22 +0100268 io_u->error = 0;
269 io_u->resid = 0;
270
Jens Axboe433afcb2007-02-22 10:39:01 +0100271 if (td->io_ops->flags & FIO_SYNCIO) {
Jens Axboe12d9d842008-10-16 21:26:10 +0200272 if (fio_fill_issue_time(td))
Jens Axboe9520ebb2008-10-16 21:03:27 +0200273 fio_gettime(&io_u->issue_time, NULL);
Jens Axboed0c15322008-10-16 20:33:51 +0200274
275 /*
276 * only used for iolog
277 */
278 if (td->o.read_iolog_file)
279 memcpy(&td->last_issue, &io_u->issue_time,
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100280 sizeof(struct timeval));
Jens Axboe433afcb2007-02-22 10:39:01 +0100281 }
282
Jens Axboebcd5abf2013-01-23 09:27:25 -0700283 if (ddir_rw(acct_ddir(io_u)))
284 td->io_issues[acct_ddir(io_u)]++;
Jens Axboe755200a2007-02-19 13:08:12 +0100285
Jens Axboe7e77dd02007-02-20 10:57:34 +0100286 ret = td->io_ops->queue(td, io_u);
Jens Axboe5aeb77d2007-02-20 11:34:54 +0100287
Jens Axboe4d4e80f2008-03-04 10:18:56 +0100288 unlock_file(td, io_u->file);
Jens Axboeb2bd2bd2008-03-01 18:19:52 +0100289
Jens Axboecb211682009-07-03 08:38:50 +0200290 /*
Jens Axboe39a43d32013-04-17 19:20:28 +0200291 * If an error was seen and the io engine didn't propagate it
292 * back to 'td', do so.
293 */
294 if (io_u->error && !td->error)
295 td_verror(td, io_u->error, "td_io_queue");
296
297 /*
Jens Axboecb211682009-07-03 08:38:50 +0200298 * Add warning for O_DIRECT so that users have an easier time
299 * spotting potentially bad alignment. If this triggers for the first
300 * IO, then it's likely an alignment problem or because the host fs
301 * does not support O_DIRECT
302 */
Jens Axboeff58fce2010-08-25 12:02:08 +0200303 if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 &&
Jens Axboecb211682009-07-03 08:38:50 +0200304 td->o.odirect) {
Dan Ehrenberg214ac7e2012-03-15 14:44:26 +0100305
Jens Axboecb211682009-07-03 08:38:50 +0200306 log_info("fio: first direct IO errored. File system may not "
307 "support direct IO, or iomem_align= is bad.\n");
308 }
309
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200310 if (!td->io_ops->commit || ddir_trim(io_u->ddir)) {
Jens Axboe838bc702008-05-22 13:08:23 +0200311 io_u_mark_submit(td, 1);
312 io_u_mark_complete(td, 1);
313 }
314
Jens Axboed8005752008-05-15 09:49:09 +0200315 if (ret == FIO_Q_COMPLETED) {
Jens Axboeff58fce2010-08-25 12:02:08 +0200316 if (ddir_rw(io_u->ddir)) {
Jens Axboed8005752008-05-15 09:49:09 +0200317 io_u_mark_depth(td, 1);
318 td->ts.total_io_u[io_u->ddir]++;
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200319 }
Jens Axboed8005752008-05-15 09:49:09 +0200320 } else if (ret == FIO_Q_QUEUED) {
Jens Axboeeb7c8ae2007-02-26 14:45:12 +0100321 int r;
322
Jens Axboeff58fce2010-08-25 12:02:08 +0200323 if (ddir_rw(io_u->ddir)) {
Jens Axboed8005752008-05-15 09:49:09 +0200324 td->io_u_queued++;
325 td->ts.total_io_u[io_u->ddir]++;
326 }
327
328 if (td->io_u_queued >= td->o.iodepth_batch) {
Jens Axboeeb7c8ae2007-02-26 14:45:12 +0100329 r = td_io_commit(td);
330 if (r < 0)
331 return r;
332 }
333 }
Jens Axboecb5ab512007-02-26 12:57:09 +0100334
Jens Axboe433afcb2007-02-22 10:39:01 +0100335 if ((td->io_ops->flags & FIO_SYNCIO) == 0) {
Jens Axboe12d9d842008-10-16 21:26:10 +0200336 if (fio_fill_issue_time(td))
Jens Axboe9520ebb2008-10-16 21:03:27 +0200337 fio_gettime(&io_u->issue_time, NULL);
Jens Axboed0c15322008-10-16 20:33:51 +0200338
339 /*
340 * only used for iolog
341 */
342 if (td->o.read_iolog_file)
343 memcpy(&td->last_issue, &io_u->issue_time,
344 sizeof(struct timeval));
Jens Axboe433afcb2007-02-22 10:39:01 +0100345 }
346
Jens Axboe7e77dd02007-02-20 10:57:34 +0100347 return ret;
Jens Axboe10ba5352006-10-20 11:39:27 +0200348}
Jens Axboe8c16d842006-10-20 11:48:33 +0200349
350int td_io_init(struct thread_data *td)
351{
Jens Axboeeeb12162007-03-20 10:47:45 +0100352 int ret = 0;
Jens Axboe8c16d842006-10-20 11:48:33 +0200353
Jens Axboeeeb12162007-03-20 10:47:45 +0100354 if (td->io_ops->init) {
355 ret = td->io_ops->init(td);
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100356 if (ret && td->o.iodepth > 1) {
357 log_err("fio: io engine init failed. Perhaps try"
358 " reducing io depth?\n");
359 }
Jens Axboe7c973892011-01-22 15:11:03 -0700360 if (!td->error)
361 td->error = ret;
Jens Axboeeeb12162007-03-20 10:47:45 +0100362 }
363
364 return ret;
Jens Axboe8c16d842006-10-20 11:48:33 +0200365}
Jens Axboe755200a2007-02-19 13:08:12 +0100366
367int td_io_commit(struct thread_data *td)
368{
Jens Axboef3e11d02010-03-18 19:31:06 +0100369 int ret;
370
Jens Axboeee56ad52008-02-01 10:30:20 +0100371 dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth);
372
Jens Axboed8005752008-05-15 09:49:09 +0200373 if (!td->cur_depth || !td->io_u_queued)
Jens Axboee1161c32007-02-22 19:36:48 +0100374 return 0;
Jens Axboecb5ab512007-02-26 12:57:09 +0100375
Jens Axboe3fd9efb2013-04-11 08:53:24 +0200376 io_u_mark_depth(td, td->io_u_queued);
Jens Axboed8005752008-05-15 09:49:09 +0200377
Jens Axboef3e11d02010-03-18 19:31:06 +0100378 if (td->io_ops->commit) {
379 ret = td->io_ops->commit(td);
380 if (ret)
381 td_verror(td, -ret, "io commit");
382 }
Jens Axboe3fd9efb2013-04-11 08:53:24 +0200383
Ryan Marchand422f9e42012-01-31 14:05:32 +0100384 /*
385 * Reflect that events were submitted as async IO requests.
386 */
387 td->io_u_in_flight += td->io_u_queued;
388 td->io_u_queued = 0;
Jens Axboe755200a2007-02-19 13:08:12 +0100389
390 return 0;
391}
Jens Axboeb5af8292007-03-08 12:43:13 +0100392
393int td_io_open_file(struct thread_data *td, struct fio_file *f)
394{
Jens Axboe22a57ba2009-06-09 14:34:35 +0200395 assert(!fio_file_open(f));
396 assert(f->fd == -1);
397
Jens Axboe413d6692007-03-27 15:38:21 +0200398 if (td->io_ops->open_file(td, f)) {
399 if (td->error == EINVAL && td->o.odirect)
400 log_err("fio: destination does not support O_DIRECT\n");
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100401 if (td->error == EMFILE) {
402 log_err("fio: try reducing/setting openfiles (failed"
403 " at %u of %u)\n", td->nr_open_files,
404 td->o.nr_files);
405 }
Jens Axboeb5af8292007-03-08 12:43:13 +0100406
Jens Axboe22a57ba2009-06-09 14:34:35 +0200407 assert(f->fd == -1);
408 assert(!fio_file_open(f));
Jens Axboe413d6692007-03-27 15:38:21 +0200409 return 1;
Jens Axboe7bb48f82007-03-27 15:30:28 +0200410 }
Jens Axboea978ba62007-03-08 14:29:03 +0100411
Jens Axboe33c48812013-01-21 09:46:06 -0700412 fio_file_reset(td, f);
Jens Axboed6aed792009-06-03 08:41:15 +0200413 fio_file_set_open(f);
414 fio_file_clear_closing(f);
Jens Axboec97bd0f2009-05-27 13:11:20 +0200415 disk_util_inc(f->du);
Jens Axboed5707a32008-06-04 15:13:02 +0200416
417 td->nr_open_files++;
418 get_file(f);
419
Jens Axboe66159822007-04-16 21:54:24 +0200420 if (f->filetype == FIO_TYPE_PIPE) {
421 if (td_random(td)) {
422 log_err("fio: can't seek on pipes (no random io)\n");
423 goto err;
424 }
425 }
426
Jens Axboe413d6692007-03-27 15:38:21 +0200427 if (td->io_ops->flags & FIO_DISKLESSIO)
428 goto done;
429
430 if (td->o.invalidate_cache && file_invalidate_cache(td, f))
431 goto err;
432
Jens Axboe66159822007-04-16 21:54:24 +0200433 if (td->o.fadvise_hint &&
434 (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) {
Jens Axboe413d6692007-03-27 15:38:21 +0200435 int flags;
436
437 if (td_random(td))
438 flags = POSIX_FADV_RANDOM;
439 else
440 flags = POSIX_FADV_SEQUENTIAL;
441
Bruce Cranecc314b2011-01-04 10:59:30 +0100442 if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) {
Jens Axboe413d6692007-03-27 15:38:21 +0200443 td_verror(td, errno, "fadvise");
444 goto err;
445 }
446 }
447
Jens Axboee116f2b2008-06-04 15:14:24 +0200448#ifdef FIO_OS_DIRECTIO
449 /*
450 * Some OS's have a distinct call to mark the file non-buffered,
451 * instead of using O_DIRECT (Solaris)
452 */
453 if (td->o.odirect) {
454 int ret = fio_set_odirect(f->fd);
455
456 if (ret) {
457 td_verror(td, ret, "fio_set_odirect");
Jens Axboe78e51c72010-11-23 11:12:39 +0100458 log_err("fio: the file system does not seem to support direct IO\n");
Jens Axboee116f2b2008-06-04 15:14:24 +0200459 goto err;
460 }
461 }
462#endif
463
Jens Axboe413d6692007-03-27 15:38:21 +0200464done:
Jens Axboef29b25a2007-07-23 08:56:43 +0200465 log_file(td, f, FIO_LOG_OPEN_FILE);
Jens Axboe413d6692007-03-27 15:38:21 +0200466 return 0;
467err:
Jens Axboec97bd0f2009-05-27 13:11:20 +0200468 disk_util_dec(f->du);
Jens Axboeb2840752007-04-12 12:57:27 +0200469 if (td->io_ops->close_file)
470 td->io_ops->close_file(td, f);
Jens Axboe7bb48f82007-03-27 15:30:28 +0200471 return 1;
Jens Axboeb5af8292007-03-08 12:43:13 +0100472}
473
Jens Axboe6977bcd2008-03-01 15:55:36 +0100474int td_io_close_file(struct thread_data *td, struct fio_file *f)
Jens Axboeb5af8292007-03-08 12:43:13 +0100475{
Jens Axboed6aed792009-06-03 08:41:15 +0200476 if (!fio_file_closing(f))
Jens Axboef29b25a2007-07-23 08:56:43 +0200477 log_file(td, f, FIO_LOG_CLOSE_FILE);
478
Jens Axboe0ad920e2007-03-13 11:06:45 +0100479 /*
480 * mark as closing, do real close when last io on it has completed
481 */
Jens Axboed6aed792009-06-03 08:41:15 +0200482 fio_file_set_closing(f);
Jens Axboe0ad920e2007-03-13 11:06:45 +0100483
Jens Axboec97bd0f2009-05-27 13:11:20 +0200484 disk_util_dec(f->du);
Jens Axboecba52432013-03-21 10:06:58 -0600485
486 if (td->o.file_lock_mode != FILE_LOCK_NONE)
487 unlock_file_all(td, f);
Jens Axboe29c13492008-03-01 19:25:20 +0100488
Jens Axboe6977bcd2008-03-01 15:55:36 +0100489 return put_file(td, f);
Jens Axboeb5af8292007-03-08 12:43:13 +0100490}
Jens Axboedf9c26b2009-03-05 10:13:58 +0100491
492int td_io_get_file_size(struct thread_data *td, struct fio_file *f)
493{
494 if (!td->io_ops->get_file_size)
495 return 0;
496
497 return td->io_ops->get_file_size(td, f);
498}
Jens Axboe44f29692010-03-09 20:09:44 +0100499
Jens Axboe0a28ecd2010-03-09 21:40:38 +0100500static int do_sync_file_range(struct thread_data *td, struct fio_file *f)
Jens Axboe44f29692010-03-09 20:09:44 +0100501{
502 off64_t offset, nbytes;
503
504 offset = f->first_write;
505 nbytes = f->last_write - f->first_write;
506
Jens Axboe3843deb2010-03-09 20:41:15 +0100507 if (!nbytes)
508 return 0;
Jens Axboe44f29692010-03-09 20:09:44 +0100509
Jens Axboe3843deb2010-03-09 20:41:15 +0100510 return sync_file_range(f->fd, offset, nbytes, td->o.sync_file_range);
Jens Axboe44f29692010-03-09 20:09:44 +0100511}
Jens Axboe0a28ecd2010-03-09 21:40:38 +0100512
513int do_io_u_sync(struct thread_data *td, struct io_u *io_u)
514{
515 int ret;
516
517 if (io_u->ddir == DDIR_SYNC) {
518 ret = fsync(io_u->file->fd);
519 } else if (io_u->ddir == DDIR_DATASYNC) {
Jens Axboe67bf9822013-01-10 11:23:19 +0100520#ifdef CONFIG_FDATASYNC
Jens Axboe0a28ecd2010-03-09 21:40:38 +0100521 ret = fdatasync(io_u->file->fd);
522#else
523 ret = io_u->xfer_buflen;
524 io_u->error = EINVAL;
525#endif
526 } else if (io_u->ddir == DDIR_SYNC_FILE_RANGE)
527 ret = do_sync_file_range(td, io_u->file);
528 else {
529 ret = io_u->xfer_buflen;
530 io_u->error = EINVAL;
531 }
532
Jens Axboecb849a72010-03-09 21:44:55 +0100533 if (ret < 0)
534 io_u->error = errno;
535
Jens Axboe0a28ecd2010-03-09 21:40:38 +0100536 return ret;
537}
Jens Axboea5f30272010-07-19 16:19:55 -0600538
539int do_io_u_trim(struct thread_data *td, struct io_u *io_u)
540{
541#ifndef FIO_HAVE_TRIM
542 io_u->error = EINVAL;
Jens Axboeff58fce2010-08-25 12:02:08 +0200543 return 0;
Jens Axboea5f30272010-07-19 16:19:55 -0600544#else
545 struct fio_file *f = io_u->file;
546 int ret;
547
Jens Axboec6404a42010-09-24 19:36:34 +0200548 ret = os_trim(f->fd, io_u->offset, io_u->xfer_buflen);
Jens Axboea5f30272010-07-19 16:19:55 -0600549 if (!ret)
Jens Axboe3fd9efb2013-04-11 08:53:24 +0200550 return io_u->xfer_buflen;
Jens Axboea5f30272010-07-19 16:19:55 -0600551
Jens Axboeff58fce2010-08-25 12:02:08 +0200552 io_u->error = ret;
553 return 0;
Jens Axboea5f30272010-07-19 16:19:55 -0600554#endif
555}
Steven Langde890a12011-11-09 14:03:34 +0100556
557int fio_show_ioengine_help(const char *engine)
558{
559 struct flist_head *entry;
560 struct thread_data td;
561 char *sep;
562 int ret = 1;
563
564 if (!engine || !*engine) {
565 log_info("Available IO engines:\n");
566 flist_for_each(entry, &engine_list) {
567 td.io_ops = flist_entry(entry, struct ioengine_ops,
568 list);
569 log_info("\t%s\n", td.io_ops->name);
570 }
571 return 0;
572 }
573 sep = strchr(engine, ',');
574 if (sep) {
575 *sep = 0;
576 sep++;
577 }
578
579 memset(&td, 0, sizeof(td));
580
581 td.io_ops = load_ioengine(&td, engine);
582 if (!td.io_ops) {
583 log_info("IO engine %s not found\n", engine);
584 return 1;
585 }
586
587 if (td.io_ops->options)
588 ret = show_cmd_help(td.io_ops->options, sep);
589 else
590 log_info("IO engine %s has no options\n", td.io_ops->name);
591
592 free_ioengine(&td);
593
594 return ret;
595}