blob: b29db3f3f237032db28c1ec1d4fdc4cc6b6c050f [file] [log] [blame]
Jens Axboe53cdc682006-10-18 11:50:58 +02001#include <unistd.h>
2#include <fcntl.h>
3#include <string.h>
4#include <assert.h>
Jens Axboebbf6b542007-03-13 15:28:55 +01005#include <dirent.h>
Jens Axboe53cdc682006-10-18 11:50:58 +02006#include <sys/stat.h>
7#include <sys/mman.h>
Jens Axboebbf6b542007-03-13 15:28:55 +01008#include <sys/types.h>
Jens Axboe53cdc682006-10-18 11:50:58 +02009
10#include "fio.h"
Jens Axboe53cdc682006-10-18 11:50:58 +020011
Jens Axboe7172cfe2007-07-23 14:36:00 +020012static int root_warn;
13
Jens Axboe7bb48f82007-03-27 15:30:28 +020014static int extend_file(struct thread_data *td, struct fio_file *f)
Jens Axboe25205e92006-10-19 20:50:14 +020015{
Jens Axboeea443652007-03-29 14:52:13 +020016 int r, new_layout = 0, unlink_file = 0, flags;
Jens Axboe25205e92006-10-19 20:50:14 +020017 unsigned long long left;
18 unsigned int bs;
19 char *b;
Jens Axboeb2a15192006-10-18 14:10:42 +020020
Jens Axboe4241ea82007-09-12 08:18:36 +020021 if (read_only) {
22 log_err("fio: refusing extend of file due to read-only\n");
23 return 0;
24 }
25
Jens Axboe507a7022007-03-27 15:52:46 +020026 /*
27 * check if we need to lay the file out complete again. fio
28 * does that for operations involving reads, or for writes
29 * where overwrite is set
30 */
31 if (td_read(td) || (td_write(td) && td->o.overwrite))
32 new_layout = 1;
Jens Axboeea443652007-03-29 14:52:13 +020033 if (td_write(td) && !td->o.overwrite)
34 unlink_file = 1;
Jens Axboe507a7022007-03-27 15:52:46 +020035
Jens Axboe6ae1f572008-02-21 10:20:00 +010036 if (unlink_file || new_layout) {
Zhang, Yanmin982016d2008-02-26 15:35:52 +010037 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
Jens Axboe7bb48f82007-03-27 15:30:28 +020038 td_verror(td, errno, "unlink");
39 return 1;
40 }
41 }
42
Jens Axboe507a7022007-03-27 15:52:46 +020043 flags = O_WRONLY | O_CREAT;
44 if (new_layout)
45 flags |= O_TRUNC;
46
Jens Axboeee56ad52008-02-01 10:30:20 +010047 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
Jens Axboe507a7022007-03-27 15:52:46 +020048 f->fd = open(f->file_name, flags, 0644);
Jens Axboe53cdc682006-10-18 11:50:58 +020049 if (f->fd < 0) {
Jens Axboee1161c32007-02-22 19:36:48 +010050 td_verror(td, errno, "open");
Jens Axboe53cdc682006-10-18 11:50:58 +020051 return 1;
52 }
53
Shawn Lewisfc74ac12008-01-11 09:45:11 +010054 if (!new_layout)
55 goto done;
56
Jens Axboeee56ad52008-02-01 10:30:20 +010057 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
58 f->real_file_size);
Jens Axboe7bb48f82007-03-27 15:30:28 +020059 if (ftruncate(f->fd, f->real_file_size) == -1) {
Jens Axboee1161c32007-02-22 19:36:48 +010060 td_verror(td, errno, "ftruncate");
Jens Axboe53cdc682006-10-18 11:50:58 +020061 goto err;
62 }
63
Jens Axboeee56ad52008-02-01 10:30:20 +010064 dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
65 f->real_file_size);
Jens Axboe7bb48f82007-03-27 15:30:28 +020066 if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
Jens Axboee1161c32007-02-22 19:36:48 +010067 td_verror(td, errno, "posix_fallocate");
Jens Axboe40f82982006-10-25 11:21:05 +020068 goto err;
69 }
70
Jens Axboe2dc1bbe2007-03-15 15:01:33 +010071 b = malloc(td->o.max_bs[DDIR_WRITE]);
72 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
Jens Axboe53cdc682006-10-18 11:50:58 +020073
Jens Axboe7bb48f82007-03-27 15:30:28 +020074 left = f->real_file_size;
Jens Axboe53cdc682006-10-18 11:50:58 +020075 while (left && !td->terminate) {
Jens Axboe2dc1bbe2007-03-15 15:01:33 +010076 bs = td->o.max_bs[DDIR_WRITE];
Jens Axboe53cdc682006-10-18 11:50:58 +020077 if (bs > left)
78 bs = left;
79
80 r = write(f->fd, b, bs);
81
82 if (r == (int) bs) {
83 left -= bs;
84 continue;
85 } else {
86 if (r < 0)
Jens Axboee1161c32007-02-22 19:36:48 +010087 td_verror(td, errno, "write");
Jens Axboe53cdc682006-10-18 11:50:58 +020088 else
Jens Axboee1161c32007-02-22 19:36:48 +010089 td_verror(td, EIO, "write");
Jens Axboe53cdc682006-10-18 11:50:58 +020090
91 break;
92 }
93 }
94
95 if (td->terminate)
96 unlink(f->file_name);
Jens Axboe2dc1bbe2007-03-15 15:01:33 +010097 else if (td->o.create_fsync)
Jens Axboe53cdc682006-10-18 11:50:58 +020098 fsync(f->fd);
99
100 free(b);
Jens Axboe507a7022007-03-27 15:52:46 +0200101done:
Jens Axboe53cdc682006-10-18 11:50:58 +0200102 close(f->fd);
103 f->fd = -1;
104 return 0;
105err:
106 close(f->fd);
107 f->fd = -1;
108 return 1;
109}
110
Jens Axboe7bb48f82007-03-27 15:30:28 +0200111static unsigned long long get_rand_file_size(struct thread_data *td)
Jens Axboe9c60ce62007-03-15 09:14:47 +0100112{
Jens Axboe9c60ce62007-03-15 09:14:47 +0100113 unsigned long long ret;
114 long r;
115
Jens Axboe9c60ce62007-03-15 09:14:47 +0100116 r = os_random_long(&td->file_size_state);
ljzhang,Yaxin Hu,Jianchao Tangd11a5312007-07-27 15:54:10 +0200117 ret = td->o.file_size_low + (unsigned long long) ((double) (td->o.file_size_high - td->o.file_size_low) * (r / (RAND_MAX + 1.0)));
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100118 ret -= (ret % td->o.rw_min_bs);
Jens Axboe9c60ce62007-03-15 09:14:47 +0100119 return ret;
120}
121
Jens Axboe53cdc682006-10-18 11:50:58 +0200122static int file_size(struct thread_data *td, struct fio_file *f)
123{
124 struct stat st;
125
Jens Axboe7bb48f82007-03-27 15:30:28 +0200126 if (fstat(f->fd, &st) == -1) {
127 td_verror(td, errno, "fstat");
128 return 1;
129 }
Jens Axboe53cdc682006-10-18 11:50:58 +0200130
Jens Axboe7bb48f82007-03-27 15:30:28 +0200131 f->real_file_size = st.st_size;
Jens Axboe53cdc682006-10-18 11:50:58 +0200132 return 0;
133}
134
135static int bdev_size(struct thread_data *td, struct fio_file *f)
136{
137 unsigned long long bytes;
138 int r;
139
140 r = blockdev_size(f->fd, &bytes);
141 if (r) {
Jens Axboee1161c32007-02-22 19:36:48 +0100142 td_verror(td, r, "blockdev_size");
Jens Axboe53cdc682006-10-18 11:50:58 +0200143 return 1;
144 }
145
146 f->real_file_size = bytes;
Jens Axboe53cdc682006-10-18 11:50:58 +0200147 return 0;
148}
149
150static int get_file_size(struct thread_data *td, struct fio_file *f)
151{
152 int ret = 0;
153
Jens Axboe409b3412007-03-28 09:57:01 +0200154 if (f->flags & FIO_SIZE_KNOWN)
155 return 0;
156
Jens Axboe7bb48f82007-03-27 15:30:28 +0200157 if (f->filetype == FIO_TYPE_FILE)
158 ret = file_size(td, f);
159 else if (f->filetype == FIO_TYPE_BD)
Jens Axboe53cdc682006-10-18 11:50:58 +0200160 ret = bdev_size(td, f);
161 else
162 f->real_file_size = -1;
163
164 if (ret)
165 return ret;
166
167 if (f->file_offset > f->real_file_size) {
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100168 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
Jens Axboe53cdc682006-10-18 11:50:58 +0200169 return 1;
170 }
171
Jens Axboe409b3412007-03-28 09:57:01 +0200172 f->flags |= FIO_SIZE_KNOWN;
Jens Axboe53cdc682006-10-18 11:50:58 +0200173 return 0;
174}
175
Jens Axboee5b401d2006-10-18 16:03:40 +0200176int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
177{
178 int ret = 0;
179
Jens Axboeee56ad52008-02-01 10:30:20 +0100180 dprint(FD_IO, "invalidate cache (%d)\n", td->o.odirect);
181
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100182 if (td->o.odirect)
Jens Axboeb5af8292007-03-08 12:43:13 +0100183 return 0;
184
Jens Axboee5b401d2006-10-18 16:03:40 +0200185 /*
186 * FIXME: add blockdev flushing too
187 */
Jens Axboeb5af8292007-03-08 12:43:13 +0100188 if (f->mmap)
Jens Axboe7bb48f82007-03-27 15:30:28 +0200189 ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
Jens Axboe467d1b62007-03-15 14:11:10 +0100190 else if (f->filetype == FIO_TYPE_FILE)
Jens Axboe7bb48f82007-03-27 15:30:28 +0200191 ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
Jens Axboe7e0e25c2007-03-27 12:49:56 +0200192 else if (f->filetype == FIO_TYPE_BD) {
Jens Axboeb5af8292007-03-08 12:43:13 +0100193 ret = blockdev_invalidate_cache(f->fd);
Jens Axboe7e0e25c2007-03-27 12:49:56 +0200194 if (ret < 0 && errno == EACCES && geteuid()) {
Jens Axboe7172cfe2007-07-23 14:36:00 +0200195 if (!root_warn) {
196 log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
197 root_warn = 1;
198 }
Jens Axboe7e0e25c2007-03-27 12:49:56 +0200199 ret = 0;
200 }
Jens Axboeb5605e92007-04-16 20:42:33 +0200201 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
Jens Axboee5b401d2006-10-18 16:03:40 +0200202 ret = 0;
203
204 if (ret < 0) {
Jens Axboee1161c32007-02-22 19:36:48 +0100205 td_verror(td, errno, "invalidate_cache");
Jens Axboee5b401d2006-10-18 16:03:40 +0200206 return 1;
207 }
208
Jens Axboead2da602007-02-26 12:33:27 +0100209 return ret;
Jens Axboee5b401d2006-10-18 16:03:40 +0200210}
211
Jens Axboeb5af8292007-03-08 12:43:13 +0100212void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
Jens Axboe53cdc682006-10-18 11:50:58 +0200213{
Jens Axboeee56ad52008-02-01 10:30:20 +0100214 dprint(FD_FILE, "fd close %s\n", f->file_name);
Jens Axboeb5af8292007-03-08 12:43:13 +0100215 close(f->fd);
216 f->fd = -1;
Jens Axboe53cdc682006-10-18 11:50:58 +0200217}
218
Jens Axboeb5af8292007-03-08 12:43:13 +0100219int generic_open_file(struct thread_data *td, struct fio_file *f)
Jens Axboe53cdc682006-10-18 11:50:58 +0200220{
Jens Axboe66159822007-04-16 21:54:24 +0200221 int is_std = 0;
Jens Axboe53cdc682006-10-18 11:50:58 +0200222 int flags = 0;
223
Jens Axboeee56ad52008-02-01 10:30:20 +0100224 dprint(FD_FILE, "fd open %s\n", f->file_name);
225
Jens Axboe66159822007-04-16 21:54:24 +0200226 if (!strcmp(f->file_name, "-")) {
227 if (td_rw(td)) {
228 log_err("fio: can't read/write to stdin/out\n");
229 return 1;
230 }
231 is_std = 1;
Jens Axboece98fa62007-04-17 13:27:32 +0200232
233 /*
234 * move output logging to stderr, if we are writing to stdout
235 */
236 if (td_write(td))
237 f_out = stderr;
Jens Axboe66159822007-04-16 21:54:24 +0200238 }
239
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100240 if (td->o.odirect)
Jens Axboe2fd233b2007-03-02 08:44:25 +0100241 flags |= OS_O_DIRECT;
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100242 if (td->o.sync_io)
Jens Axboe2fd233b2007-03-02 08:44:25 +0100243 flags |= O_SYNC;
Jens Axboead923962007-10-11 21:41:41 +0200244 if (f->filetype != FIO_TYPE_FILE)
245 flags |= O_NOATIME;
Jens Axboe7abf8332006-11-23 15:01:19 +0100246
Aaron Carroll056f3452007-11-26 09:08:53 +0100247open_again:
Jens Axboe660a1cb2007-04-17 15:37:47 +0200248 if (td_write(td)) {
Jens Axboe4241ea82007-09-12 08:18:36 +0200249 assert(!read_only);
250
Jens Axboe2fd233b2007-03-02 08:44:25 +0100251 flags |= O_RDWR;
Jens Axboe53cdc682006-10-18 11:50:58 +0200252
Jens Axboeaf52b342007-03-13 10:07:47 +0100253 if (f->filetype == FIO_TYPE_FILE)
Jens Axboe2fd233b2007-03-02 08:44:25 +0100254 flags |= O_CREAT;
Jens Axboe2fd233b2007-03-02 08:44:25 +0100255
Jens Axboe66159822007-04-16 21:54:24 +0200256 if (is_std)
257 f->fd = dup(STDOUT_FILENO);
258 else
259 f->fd = open(f->file_name, flags, 0600);
Jens Axboe2fd233b2007-03-02 08:44:25 +0100260 } else {
Jens Axboe4241ea82007-09-12 08:18:36 +0200261 if (f->filetype == FIO_TYPE_CHAR && !read_only)
Jens Axboe2fd233b2007-03-02 08:44:25 +0100262 flags |= O_RDWR;
263 else
264 flags |= O_RDONLY;
265
Jens Axboe66159822007-04-16 21:54:24 +0200266 if (is_std)
267 f->fd = dup(STDIN_FILENO);
268 else
269 f->fd = open(f->file_name, flags);
Jens Axboe53cdc682006-10-18 11:50:58 +0200270 }
271
272 if (f->fd == -1) {
Jens Axboee4e33252007-03-21 13:07:54 +0100273 char buf[FIO_VERROR_SIZE];
Jens Axboee1161c32007-02-22 19:36:48 +0100274 int __e = errno;
275
Aaron Carroll056f3452007-11-26 09:08:53 +0100276 if (errno == EPERM && (flags & O_NOATIME)) {
277 flags &= ~O_NOATIME;
278 goto open_again;
279 }
280
Jens Axboee4e33252007-03-21 13:07:54 +0100281 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
282
283 td_verror(td, __e, buf);
Jens Axboe53cdc682006-10-18 11:50:58 +0200284 }
285
Jens Axboeb5af8292007-03-08 12:43:13 +0100286 if (get_file_size(td, f))
287 goto err;
288
Jens Axboe53cdc682006-10-18 11:50:58 +0200289 return 0;
Jens Axboeb5af8292007-03-08 12:43:13 +0100290err:
291 close(f->fd);
292 return 1;
293}
294
Jens Axboe21972cd2006-11-23 12:39:16 +0100295int open_files(struct thread_data *td)
296{
297 struct fio_file *f;
Jens Axboeaf52b342007-03-13 10:07:47 +0100298 unsigned int i;
299 int err = 0;
Jens Axboe21972cd2006-11-23 12:39:16 +0100300
Jens Axboeee56ad52008-02-01 10:30:20 +0100301 dprint(FD_FILE, "open files\n");
302
Jens Axboe21972cd2006-11-23 12:39:16 +0100303 for_each_file(td, f, i) {
Jens Axboeb5af8292007-03-08 12:43:13 +0100304 err = td_io_open_file(td, f);
Jens Axboe9bf27b42007-03-27 19:49:31 +0200305 if (err) {
306 if (td->error == EMFILE) {
307 log_err("fio: limited open files to: %d\n", td->nr_open_files);
308 td->o.open_files = td->nr_open_files;
309 err = 0;
310 clear_error(td);
311 }
Jens Axboe21972cd2006-11-23 12:39:16 +0100312 break;
Jens Axboe9bf27b42007-03-27 19:49:31 +0200313 }
Jens Axboeb5af8292007-03-08 12:43:13 +0100314
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100315 if (td->o.open_files == td->nr_open_files)
Jens Axboeb5af8292007-03-08 12:43:13 +0100316 break;
Jens Axboe21972cd2006-11-23 12:39:16 +0100317 }
318
Jens Axboe7abf8332006-11-23 15:01:19 +0100319 if (!err)
320 return 0;
321
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100322 for_each_file(td, f, i)
Jens Axboeb5af8292007-03-08 12:43:13 +0100323 td_io_close_file(td, f);
Jens Axboe7abf8332006-11-23 15:01:19 +0100324
Jens Axboe21972cd2006-11-23 12:39:16 +0100325 return err;
326}
327
Jens Axboe7bb48f82007-03-27 15:30:28 +0200328/*
329 * open/close all files, so that ->real_file_size gets set
330 */
Jens Axboebab3fd52007-04-02 10:34:18 +0200331static int get_file_sizes(struct thread_data *td)
Jens Axboe53cdc682006-10-18 11:50:58 +0200332{
333 struct fio_file *f;
Jens Axboeaf52b342007-03-13 10:07:47 +0100334 unsigned int i;
Jens Axboebab3fd52007-04-02 10:34:18 +0200335 int err = 0;
Jens Axboe7bb48f82007-03-27 15:30:28 +0200336
337 for_each_file(td, f, i) {
Jens Axboebab3fd52007-04-02 10:34:18 +0200338 if (td->io_ops->open_file(td, f)) {
Jens Axboe40b44f42007-04-11 12:43:35 +0200339 if (td->error != ENOENT) {
340 log_err("%s\n", td->verror);
341 err = 1;
342 }
Jens Axboe541d66d2007-03-27 19:50:11 +0200343 clear_error(td);
Jens Axboe07eb79d2007-04-12 13:02:38 +0200344 } else {
345 if (td->io_ops->close_file)
346 td->io_ops->close_file(td, f);
347 }
Jens Axboe409b3412007-03-28 09:57:01 +0200348
349 if (f->real_file_size == -1ULL && td->o.size)
350 f->real_file_size = td->o.size / td->o.nr_files;
Jens Axboe7bb48f82007-03-27 15:30:28 +0200351 }
Jens Axboebab3fd52007-04-02 10:34:18 +0200352
353 return err;
Jens Axboe7bb48f82007-03-27 15:30:28 +0200354}
355
356/*
357 * Open the files and setup files sizes, creating files if necessary.
358 */
359int setup_files(struct thread_data *td)
360{
361 unsigned long long total_size, extend_size;
362 struct fio_file *f;
363 unsigned int i;
Jens Axboe000b0802007-03-27 15:56:10 +0200364 int err = 0, need_extend;
Jens Axboe53cdc682006-10-18 11:50:58 +0200365
Jens Axboeee56ad52008-02-01 10:30:20 +0100366 dprint(FD_FILE, "setup files\n");
367
Jens Axboe53cdc682006-10-18 11:50:58 +0200368 /*
369 * if ioengine defines a setup() method, it's responsible for
Jens Axboe7bb48f82007-03-27 15:30:28 +0200370 * opening the files and setting f->real_file_size to indicate
371 * the valid range for that file.
Jens Axboe53cdc682006-10-18 11:50:58 +0200372 */
373 if (td->io_ops->setup)
Jens Axboe7bb48f82007-03-27 15:30:28 +0200374 err = td->io_ops->setup(td);
375 else
Jens Axboebab3fd52007-04-02 10:34:18 +0200376 err = get_file_sizes(td);
Jens Axboe53cdc682006-10-18 11:50:58 +0200377
Jens Axboef1027062006-10-20 10:14:01 +0200378 if (err)
379 return err;
380
Jens Axboe0a7eb122006-10-20 10:36:42 +0200381 /*
Jens Axboe7bb48f82007-03-27 15:30:28 +0200382 * check sizes. if the files/devices do not exist and the size
383 * isn't passed to fio, abort.
Jens Axboe0a7eb122006-10-20 10:36:42 +0200384 */
Jens Axboe7bb48f82007-03-27 15:30:28 +0200385 total_size = 0;
386 for_each_file(td, f, i) {
387 if (f->real_file_size == -1ULL)
388 total_size = -1ULL;
389 else
390 total_size += f->real_file_size;
391 }
Jens Axboe0a7eb122006-10-20 10:36:42 +0200392
Jens Axboe7bb48f82007-03-27 15:30:28 +0200393 /*
394 * device/file sizes are zero and no size given, punt
395 */
Jens Axboe1f809d12007-10-25 18:34:02 +0200396 if ((!total_size || total_size == -1ULL) && !td->o.size &&
Shawn Lewisaa31f1f2008-01-11 09:45:11 +0100397 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
Jens Axboe7bb48f82007-03-27 15:30:28 +0200398 log_err("%s: you need to specify size=\n", td->o.name);
Jens Axboee1161c32007-02-22 19:36:48 +0100399 td_verror(td, EINVAL, "total_file_size");
Jens Axboe53cdc682006-10-18 11:50:58 +0200400 return 1;
401 }
402
Jens Axboe7bb48f82007-03-27 15:30:28 +0200403 /*
404 * now file sizes are known, so we can set ->io_size. if size= is
405 * not given, ->io_size is just equal to ->real_file_size. if size
406 * is given, ->io_size is size / nr_files.
407 */
408 extend_size = total_size = 0;
409 need_extend = 0;
410 for_each_file(td, f, i) {
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200411 f->file_offset = td->o.start_offset;
412
Jens Axboe7bb48f82007-03-27 15:30:28 +0200413 if (!td->o.file_size_low) {
414 /*
415 * no file size range given, file size is equal to
416 * total size divided by number of files. if that is
417 * zero, set it to the real file size.
418 */
419 f->io_size = td->o.size / td->o.nr_files;
Jens Axboe65bdb102008-01-24 13:13:12 +0100420 if (!f->io_size)
Jens Axboe273f8c92008-01-25 14:02:15 +0100421 f->io_size = f->real_file_size - f->file_offset;
Jens Axboe7bb48f82007-03-27 15:30:28 +0200422 } else if (f->real_file_size < td->o.file_size_low ||
423 f->real_file_size > td->o.file_size_high) {
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200424 if (f->file_offset > td->o.file_size_low)
425 goto err_offset;
Jens Axboe7bb48f82007-03-27 15:30:28 +0200426 /*
427 * file size given. if it's fixed, use that. if it's a
428 * range, generate a random size in-between.
429 */
430 if (td->o.file_size_low == td->o.file_size_high)
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200431 f->io_size = td->o.file_size_low - f->file_offset;
Jens Axboe7bb48f82007-03-27 15:30:28 +0200432 else
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200433 f->io_size = get_rand_file_size(td) - f->file_offset;
Jens Axboe65bdb102008-01-24 13:13:12 +0100434 } else
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200435 f->io_size = f->real_file_size - f->file_offset;
Jens Axboe7bb48f82007-03-27 15:30:28 +0200436
437 if (f->io_size == -1ULL)
438 total_size = -1ULL;
439 else
440 total_size += f->io_size;
441
442 if (f->filetype == FIO_TYPE_FILE &&
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200443 (f->io_size + f->file_offset) > f->real_file_size &&
Jens Axboe7bb48f82007-03-27 15:30:28 +0200444 !(td->io_ops->flags & FIO_DISKLESSIO)) {
445 need_extend++;
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200446 extend_size += (f->io_size + f->file_offset);
Jens Axboe7bb48f82007-03-27 15:30:28 +0200447 f->flags |= FIO_FILE_EXTEND;
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200448 }
Jens Axboe7bb48f82007-03-27 15:30:28 +0200449 }
450
ljzhang,Yaxin Hu,Jianchao Tang22982902007-07-27 13:21:28 +0200451 if (!td->o.size || td->o.size > total_size)
Jens Axboe7bb48f82007-03-27 15:30:28 +0200452 td->o.size = total_size;
453
454 /*
455 * See if we need to extend some files
456 */
457 if (need_extend) {
458 temp_stall_ts = 1;
Jens Axboef627d8a2007-08-24 10:24:09 +0200459 log_info("%s: Laying out IO file(s) (%u file(s) / %LuMiB)\n",
Jens Axboe7bb48f82007-03-27 15:30:28 +0200460 td->o.name, need_extend, extend_size >> 20);
461
462 for_each_file(td, f, i) {
463 if (!(f->flags & FIO_FILE_EXTEND))
464 continue;
465
Jens Axboe409b3412007-03-28 09:57:01 +0200466 assert(f->filetype == FIO_TYPE_FILE);
Jens Axboe7bb48f82007-03-27 15:30:28 +0200467 f->flags &= ~FIO_FILE_EXTEND;
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200468 f->real_file_size = (f->io_size + f->file_offset);
Jens Axboe7bb48f82007-03-27 15:30:28 +0200469 err = extend_file(td, f);
470 if (err)
471 break;
472 }
473 temp_stall_ts = 0;
474 }
475
476 if (err)
477 return err;
478
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100479 if (!td->o.zone_size)
Jens Axboe7bb48f82007-03-27 15:30:28 +0200480 td->o.zone_size = td->o.size;
Jens Axboe53cdc682006-10-18 11:50:58 +0200481
Jens Axboeea966f82007-09-03 10:09:37 +0200482 /*
483 * iolog already set the total io size, if we read back
484 * stored entries.
485 */
486 if (!td->o.read_iolog_file)
487 td->total_io_size = td->o.size * td->o.loops;
Jens Axboe7bb48f82007-03-27 15:30:28 +0200488 return 0;
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200489err_offset:
490 log_err("%s: you need to specify valid offset=\n", td->o.name);
491 return 1;
Jens Axboe53cdc682006-10-18 11:50:58 +0200492}
493
Jens Axboe68727072007-03-15 20:49:25 +0100494int init_random_map(struct thread_data *td)
495{
Jens Axboe509eab12007-12-14 12:42:53 +0100496 unsigned long long blocks, num_maps;
Jens Axboe68727072007-03-15 20:49:25 +0100497 struct fio_file *f;
498 unsigned int i;
499
Jens Axboede8dd112008-03-01 15:34:44 +0100500 if (td->o.norandommap || !td_random(td))
Jens Axboe68727072007-03-15 20:49:25 +0100501 return 0;
502
503 for_each_file(td, f, i) {
Jens Axboe509eab12007-12-14 12:42:53 +0100504 blocks = (f->real_file_size + td->o.rw_min_bs - 1) / (unsigned long long) td->o.rw_min_bs;
505 num_maps = (blocks + BLOCKS_PER_MAP-1)/ (unsigned long long) BLOCKS_PER_MAP;
Jens Axboe68727072007-03-15 20:49:25 +0100506 f->file_map = malloc(num_maps * sizeof(long));
507 if (!f->file_map) {
508 log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
509 return 1;
510 }
511 f->num_maps = num_maps;
512 memset(f->file_map, 0, num_maps * sizeof(long));
513 }
514
515 return 0;
516}
517
Jens Axboe53cdc682006-10-18 11:50:58 +0200518void close_files(struct thread_data *td)
519{
Jens Axboe0ab8db82006-10-18 17:16:23 +0200520 struct fio_file *f;
Jens Axboeaf52b342007-03-13 10:07:47 +0100521 unsigned int i;
Jens Axboe53cdc682006-10-18 11:50:58 +0200522
Jens Axboeee56ad52008-02-01 10:30:20 +0100523 dprint(FD_FILE, "close files\n");
524
Jens Axboe0ab8db82006-10-18 17:16:23 +0200525 for_each_file(td, f, i) {
Jens Axboea9b7b302007-04-19 16:31:16 +0200526 if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
Jens Axboe132ad462006-11-23 12:23:12 +0100527 unlink(f->file_name);
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100528
Jens Axboeb5af8292007-03-08 12:43:13 +0100529 td_io_close_file(td, f);
Jens Axboeb3dc7f02007-03-09 12:52:15 +0100530
Jens Axboefa1da862007-03-23 15:20:54 +0100531 free(f->file_name);
532 f->file_name = NULL;
533
Jens Axboec3439812007-03-20 13:54:53 +0100534 if (f->file_map) {
Jens Axboeb3dc7f02007-03-09 12:52:15 +0100535 free(f->file_map);
Jens Axboec3439812007-03-20 13:54:53 +0100536 f->file_map = NULL;
537 }
Jens Axboe53cdc682006-10-18 11:50:58 +0200538 }
Jens Axboeb4a6a592006-10-20 13:54:47 +0200539
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100540 td->o.filename = NULL;
Jens Axboecade3ef2007-03-23 15:29:45 +0100541 free(td->files);
Jens Axboeb4a6a592006-10-20 13:54:47 +0200542 td->files = NULL;
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100543 td->o.nr_files = 0;
Jens Axboe53cdc682006-10-18 11:50:58 +0200544}
Jens Axboeaf52b342007-03-13 10:07:47 +0100545
Jens Axboee3bab462007-03-13 11:22:09 +0100546static void get_file_type(struct fio_file *f)
Jens Axboeaf52b342007-03-13 10:07:47 +0100547{
548 struct stat sb;
549
Jens Axboe66159822007-04-16 21:54:24 +0200550 if (!strcmp(f->file_name, "-"))
551 f->filetype = FIO_TYPE_PIPE;
552 else
553 f->filetype = FIO_TYPE_FILE;
Jens Axboeaf52b342007-03-13 10:07:47 +0100554
Jens Axboee3bab462007-03-13 11:22:09 +0100555 if (!lstat(f->file_name, &sb)) {
Jens Axboeaf52b342007-03-13 10:07:47 +0100556 if (S_ISBLK(sb.st_mode))
557 f->filetype = FIO_TYPE_BD;
558 else if (S_ISCHR(sb.st_mode))
559 f->filetype = FIO_TYPE_CHAR;
Jens Axboeb5605e92007-04-16 20:42:33 +0200560 else if (S_ISFIFO(sb.st_mode))
561 f->filetype = FIO_TYPE_PIPE;
Jens Axboeaf52b342007-03-13 10:07:47 +0100562 }
563}
564
Jens Axboef29b25a2007-07-23 08:56:43 +0200565int add_file(struct thread_data *td, const char *fname)
Jens Axboeaf52b342007-03-13 10:07:47 +0100566{
Jens Axboe7b4e4fe2007-03-13 12:51:40 +0100567 int cur_files = td->files_index;
Jens Axboebd0ee742007-03-23 14:26:23 +0100568 char file_name[PATH_MAX];
Jens Axboeaf52b342007-03-13 10:07:47 +0100569 struct fio_file *f;
Jens Axboebd0ee742007-03-23 14:26:23 +0100570 int len = 0;
Jens Axboeaf52b342007-03-13 10:07:47 +0100571
Jens Axboeee56ad52008-02-01 10:30:20 +0100572 dprint(FD_FILE, "add file %s\n", fname);
573
Jens Axboeaf52b342007-03-13 10:07:47 +0100574 td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
575
576 f = &td->files[cur_files];
577 memset(f, 0, sizeof(*f));
578 f->fd = -1;
Jens Axboebd0ee742007-03-23 14:26:23 +0100579
Jens Axboe07eb79d2007-04-12 13:02:38 +0200580 /*
581 * init function, io engine may not be loaded yet
582 */
583 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
584 f->real_file_size = -1ULL;
585
Jens Axboebd0ee742007-03-23 14:26:23 +0100586 if (td->o.directory)
587 len = sprintf(file_name, "%s/", td->o.directory);
588
589 sprintf(file_name + len, "%s", fname);
590 f->file_name = strdup(file_name);
Jens Axboeaf52b342007-03-13 10:07:47 +0100591
Jens Axboee3bab462007-03-13 11:22:09 +0100592 get_file_type(f);
Jens Axboeaf52b342007-03-13 10:07:47 +0100593
Jens Axboe7b4e4fe2007-03-13 12:51:40 +0100594 td->files_index++;
Jens Axboe15494412007-03-13 11:52:47 +0100595 if (f->filetype == FIO_TYPE_FILE)
596 td->nr_normal_files++;
Jens Axboef29b25a2007-07-23 08:56:43 +0200597
598 return cur_files;
Jens Axboeaf52b342007-03-13 10:07:47 +0100599}
Jens Axboe0ad920e2007-03-13 11:06:45 +0100600
601void get_file(struct fio_file *f)
602{
Jens Axboe8172fe92008-02-01 21:51:02 +0100603 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
Jens Axboe97af62c2007-05-22 11:12:13 +0200604 assert(f->flags & FIO_FILE_OPEN);
Jens Axboe0ad920e2007-03-13 11:06:45 +0100605 f->references++;
606}
607
608void put_file(struct thread_data *td, struct fio_file *f)
609{
Jens Axboe8172fe92008-02-01 21:51:02 +0100610 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
Jens Axboeee56ad52008-02-01 10:30:20 +0100611
Jens Axboe0ad920e2007-03-13 11:06:45 +0100612 if (!(f->flags & FIO_FILE_OPEN))
613 return;
614
615 assert(f->references);
616 if (--f->references)
617 return;
618
Jens Axboed424d4d2007-04-17 09:05:10 +0200619 if (should_fsync(td) && td->o.fsync_on_close)
Jens Axboeebb14152007-03-13 14:42:15 +0100620 fsync(f->fd);
621
Jens Axboe0ad920e2007-03-13 11:06:45 +0100622 if (td->io_ops->close_file)
623 td->io_ops->close_file(td, f);
Jens Axboe1020a132007-03-29 11:15:06 +0200624
Jens Axboe0ad920e2007-03-13 11:06:45 +0100625 td->nr_open_files--;
626 f->flags &= ~FIO_FILE_OPEN;
627}
Jens Axboebbf6b542007-03-13 15:28:55 +0100628
629static int recurse_dir(struct thread_data *td, const char *dirname)
630{
631 struct dirent *dir;
632 int ret = 0;
633 DIR *D;
634
635 D = opendir(dirname);
636 if (!D) {
Jens Axboe0ddb2702007-03-27 19:43:53 +0200637 char buf[FIO_VERROR_SIZE];
638
639 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
640 td_verror(td, errno, buf);
Jens Axboebbf6b542007-03-13 15:28:55 +0100641 return 1;
642 }
643
644 while ((dir = readdir(D)) != NULL) {
645 char full_path[PATH_MAX];
646 struct stat sb;
647
Jens Axboee85b2b82007-03-14 09:39:06 +0100648 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
649 continue;
Jens Axboe96d32d52007-03-14 09:16:09 +0100650
Jens Axboebbf6b542007-03-13 15:28:55 +0100651 sprintf(full_path, "%s/%s", dirname, dir->d_name);
652
653 if (lstat(full_path, &sb) == -1) {
654 if (errno != ENOENT) {
655 td_verror(td, errno, "stat");
656 return 1;
657 }
658 }
659
660 if (S_ISREG(sb.st_mode)) {
661 add_file(td, full_path);
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100662 td->o.nr_files++;
Jens Axboebbf6b542007-03-13 15:28:55 +0100663 continue;
664 }
Jens Axboe0ddb2702007-03-27 19:43:53 +0200665 if (!S_ISDIR(sb.st_mode))
666 continue;
Jens Axboebbf6b542007-03-13 15:28:55 +0100667
Jens Axboebbf6b542007-03-13 15:28:55 +0100668 if ((ret = recurse_dir(td, full_path)) != 0)
669 break;
670 }
671
672 closedir(D);
673 return ret;
674}
675
676int add_dir_files(struct thread_data *td, const char *path)
677{
Jens Axboe0ddb2702007-03-27 19:43:53 +0200678 int ret = recurse_dir(td, path);
679
680 if (!ret)
681 log_info("fio: opendir added %d files\n", td->o.nr_files);
682
683 return ret;
Jens Axboebbf6b542007-03-13 15:28:55 +0100684}
Jens Axboecade3ef2007-03-23 15:29:45 +0100685
686void dup_files(struct thread_data *td, struct thread_data *org)
687{
688 struct fio_file *f;
689 unsigned int i;
690 size_t bytes;
691
692 if (!org->files)
693 return;
694
695 bytes = org->files_index * sizeof(*f);
696 td->files = malloc(bytes);
697 memcpy(td->files, org->files, bytes);
698
699 for_each_file(td, f, i) {
700 if (f->file_name)
701 f->file_name = strdup(f->file_name);
702 }
703}
Jens Axboef29b25a2007-07-23 08:56:43 +0200704
705/*
706 * Returns the index that matches the filename, or -1 if not there
707 */
708int get_fileno(struct thread_data *td, const char *fname)
709{
710 struct fio_file *f;
711 unsigned int i;
712
713 for_each_file(td, f, i)
714 if (!strcmp(f->file_name, fname))
715 return i;
716
717 return -1;
718}
719
720/*
721 * For log usage, where we add/open/close files automatically
722 */
723void free_release_files(struct thread_data *td)
724{
725 close_files(td);
726 td->files_index = 0;
727 td->nr_normal_files = 0;
728}