Commit | Line | Data |
---|---|---|
fb7b71a3 JA |
1 | /* |
2 | * blktrace support code for fio | |
3 | */ | |
4 | #include <stdio.h> | |
5 | #include <stdlib.h> | |
5e6c2067 | 6 | #include <sys/stat.h> |
26e616d0 JA |
7 | #include <sys/ioctl.h> |
8 | #include <linux/fs.h> | |
5e6c2067 | 9 | #include <dirent.h> |
8c1fdf04 | 10 | |
01743ee1 | 11 | #include "flist.h" |
fb7b71a3 JA |
12 | #include "fio.h" |
13 | #include "blktrace_api.h" | |
40bafa33 | 14 | #include "lib/linux-dev-lookup.h" |
fb7b71a3 | 15 | |
2da7df1d | 16 | #define TRACE_FIFO_SIZE 8192 |
e2887563 JA |
17 | |
18 | /* | |
19 | * fifo refill frontend, to avoid reading data in trace sized bites | |
20 | */ | |
21 | static int refill_fifo(struct thread_data *td, struct fifo *fifo, int fd) | |
22 | { | |
23 | char buf[TRACE_FIFO_SIZE]; | |
f12b323f | 24 | unsigned int total; |
e2887563 JA |
25 | int ret; |
26 | ||
f12b323f JA |
27 | total = sizeof(buf); |
28 | if (total > fifo_room(fifo)) | |
29 | total = fifo_room(fifo); | |
e2887563 | 30 | |
f12b323f JA |
31 | ret = read(fd, buf, total); |
32 | if (ret < 0) { | |
33 | td_verror(td, errno, "read blktrace file"); | |
34 | return -1; | |
e2887563 JA |
35 | } |
36 | ||
f12b323f JA |
37 | if (ret > 0) |
38 | ret = fifo_put(fifo, buf, ret); | |
39 | ||
bd6f78b2 | 40 | dprint(FD_BLKTRACE, "refill: filled %d bytes\n", ret); |
f12b323f | 41 | return ret; |
e2887563 JA |
42 | } |
43 | ||
44 | /* | |
45 | * Retrieve 'len' bytes from the fifo, refilling if necessary. | |
46 | */ | |
47 | static int trace_fifo_get(struct thread_data *td, struct fifo *fifo, int fd, | |
48 | void *buf, unsigned int len) | |
49 | { | |
f12b323f JA |
50 | if (fifo_len(fifo) < len) { |
51 | int ret = refill_fifo(td, fifo, fd); | |
e2887563 | 52 | |
f12b323f JA |
53 | if (ret < 0) |
54 | return ret; | |
55 | } | |
e2887563 JA |
56 | |
57 | return fifo_get(fifo, buf, len); | |
58 | } | |
59 | ||
8c1fdf04 JA |
60 | /* |
61 | * Just discard the pdu by seeking past it. | |
62 | */ | |
f12b323f JA |
63 | static int discard_pdu(struct thread_data *td, struct fifo *fifo, int fd, |
64 | struct blk_io_trace *t) | |
fb7b71a3 JA |
65 | { |
66 | if (t->pdu_len == 0) | |
67 | return 0; | |
68 | ||
bd6f78b2 | 69 | dprint(FD_BLKTRACE, "discard pdu len %u\n", t->pdu_len); |
f12b323f | 70 | return trace_fifo_get(td, fifo, fd, NULL, t->pdu_len); |
fb7b71a3 JA |
71 | } |
72 | ||
8c1fdf04 JA |
73 | /* |
74 | * Check if this is a blktrace binary data file. We read a single trace | |
75 | * into memory and check for the magic signature. | |
76 | */ | |
d95b34a6 | 77 | int is_blktrace(const char *filename, int *need_swap) |
fb7b71a3 JA |
78 | { |
79 | struct blk_io_trace t; | |
80 | int fd, ret; | |
81 | ||
82 | fd = open(filename, O_RDONLY); | |
4dced407 | 83 | if (fd < 0) |
fb7b71a3 | 84 | return 0; |
fb7b71a3 JA |
85 | |
86 | ret = read(fd, &t, sizeof(t)); | |
87 | close(fd); | |
88 | ||
89 | if (ret < 0) { | |
90 | perror("read blktrace"); | |
91 | return 0; | |
92 | } else if (ret != sizeof(t)) { | |
93 | log_err("fio: short read on blktrace file\n"); | |
94 | return 0; | |
95 | } | |
96 | ||
d95b34a6 JA |
97 | if ((t.magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) { |
98 | *need_swap = 0; | |
fb7b71a3 | 99 | return 1; |
d95b34a6 JA |
100 | } |
101 | ||
102 | /* | |
103 | * Maybe it needs to be endian swapped... | |
104 | */ | |
105 | t.magic = fio_swap32(t.magic); | |
106 | if ((t.magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) { | |
107 | *need_swap = 1; | |
108 | return 1; | |
109 | } | |
fb7b71a3 JA |
110 | |
111 | return 0; | |
112 | } | |
113 | ||
c69aa91f JA |
114 | #define FMINORBITS 20 |
115 | #define FMINORMASK ((1U << FMINORBITS) - 1) | |
116 | #define FMAJOR(dev) ((unsigned int) ((dev) >> FMINORBITS)) | |
117 | #define FMINOR(dev) ((unsigned int) ((dev) & FMINORMASK)) | |
eeb9c2aa | 118 | |
89ac1d48 | 119 | static void trace_add_open_close_event(struct thread_data *td, int fileno, enum file_log_act action) |
691c8fb0 JA |
120 | { |
121 | struct io_piece *ipo; | |
122 | ||
123 | ipo = calloc(1, sizeof(*ipo)); | |
0d29de83 | 124 | init_ipo(ipo); |
691c8fb0 JA |
125 | |
126 | ipo->ddir = DDIR_INVAL; | |
127 | ipo->fileno = fileno; | |
89ac1d48 | 128 | ipo->file_action = action; |
01743ee1 | 129 | flist_add_tail(&ipo->list, &td->io_log_list); |
691c8fb0 JA |
130 | } |
131 | ||
26e616d0 | 132 | static int get_dev_blocksize(const char *dev, unsigned int *bs) |
5e6c2067 | 133 | { |
26e616d0 JA |
134 | int fd; |
135 | ||
136 | fd = open(dev, O_RDONLY); | |
137 | if (fd < 0) | |
138 | return 1; | |
139 | ||
140 | if (ioctl(fd, BLKSSZGET, bs) < 0) { | |
141 | close(fd); | |
142 | return 1; | |
143 | } | |
144 | ||
145 | close(fd); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | static int trace_add_file(struct thread_data *td, __u32 device, | |
150 | unsigned int *bs) | |
151 | { | |
152 | static unsigned int last_maj, last_min, last_fileno, last_bs; | |
c69aa91f JA |
153 | unsigned int maj = FMAJOR(device); |
154 | unsigned int min = FMINOR(device); | |
5e6c2067 | 155 | struct fio_file *f; |
5e6c2067 | 156 | unsigned int i; |
26e616d0 | 157 | char dev[256]; |
5e6c2067 | 158 | |
26e616d0 JA |
159 | if (last_maj == maj && last_min == min) { |
160 | *bs = last_bs; | |
89ac1d48 | 161 | return last_fileno; |
26e616d0 | 162 | } |
5e6c2067 JA |
163 | |
164 | last_maj = maj; | |
165 | last_min = min; | |
166 | ||
167 | /* | |
168 | * check for this file in our list | |
169 | */ | |
26e616d0 | 170 | for_each_file(td, f, i) { |
89ac1d48 SL |
171 | if (f->major == maj && f->minor == min) { |
172 | last_fileno = f->fileno; | |
26e616d0 JA |
173 | last_bs = f->bs; |
174 | goto out; | |
89ac1d48 | 175 | } |
26e616d0 | 176 | } |
5e6c2067 JA |
177 | |
178 | strcpy(dev, "/dev"); | |
40bafa33 | 179 | if (blktrace_lookup_device(td->o.replay_redirect, dev, maj, min)) { |
26e616d0 | 180 | unsigned int this_bs; |
691c8fb0 JA |
181 | int fileno; |
182 | ||
40bafa33 JA |
183 | if (td->o.replay_redirect) |
184 | dprint(FD_BLKTRACE, "device lookup: %d/%d\n overridden" | |
185 | " with: %s\n", maj, min, | |
186 | td->o.replay_redirect); | |
187 | else | |
188 | dprint(FD_BLKTRACE, "device lookup: %d/%d\n", maj, min); | |
189 | ||
bd6f78b2 | 190 | dprint(FD_BLKTRACE, "add devices %s\n", dev); |
49ffb4a2 | 191 | fileno = add_file_exclusive(td, dev); |
26e616d0 JA |
192 | |
193 | if (get_dev_blocksize(dev, &this_bs)) | |
194 | this_bs = 512; | |
195 | ||
b53f2c54 | 196 | td->o.open_files++; |
5903e7b7 JA |
197 | td->files[fileno]->major = maj; |
198 | td->files[fileno]->minor = min; | |
26e616d0 | 199 | td->files[fileno]->bs = this_bs; |
89ac1d48 | 200 | trace_add_open_close_event(td, fileno, FIO_LOG_OPEN_FILE); |
26e616d0 | 201 | |
89ac1d48 | 202 | last_fileno = fileno; |
26e616d0 | 203 | last_bs = this_bs; |
bd6f78b2 | 204 | } |
f01b34ae | 205 | |
26e616d0 JA |
206 | out: |
207 | *bs = last_bs; | |
89ac1d48 | 208 | return last_fileno; |
5e6c2067 JA |
209 | } |
210 | ||
0c63576e JA |
211 | static void t_bytes_align(struct thread_options *o, struct blk_io_trace *t) |
212 | { | |
213 | if (!o->replay_align) | |
214 | return; | |
215 | ||
216 | t->bytes = (t->bytes + o->replay_align - 1) & ~(o->replay_align - 1); | |
217 | } | |
218 | ||
219 | static void ipo_bytes_align(struct thread_options *o, struct io_piece *ipo) | |
220 | { | |
221 | if (!o->replay_align) | |
222 | return; | |
223 | ||
224 | ipo->offset &= ~(o->replay_align - 1); | |
225 | } | |
226 | ||
227 | ||
8c1fdf04 JA |
228 | /* |
229 | * Store blk_io_trace data in an ipo for later retrieval. | |
230 | */ | |
fdefd987 | 231 | static void store_ipo(struct thread_data *td, unsigned long long offset, |
89ac1d48 | 232 | unsigned int bytes, int rw, unsigned long long ttime, |
26e616d0 | 233 | int fileno, unsigned int bs) |
fdefd987 JA |
234 | { |
235 | struct io_piece *ipo = malloc(sizeof(*ipo)); | |
236 | ||
0d29de83 JA |
237 | init_ipo(ipo); |
238 | ||
26e616d0 | 239 | ipo->offset = offset * bs; |
0c63576e JA |
240 | if (td->o.replay_scale) |
241 | ipo->offset = ipo->offset / td->o.replay_scale; | |
242 | ipo_bytes_align(&td->o, ipo); | |
fdefd987 | 243 | ipo->len = bytes; |
8c1fdf04 | 244 | ipo->delay = ttime / 1000; |
fdefd987 JA |
245 | if (rw) |
246 | ipo->ddir = DDIR_WRITE; | |
247 | else | |
248 | ipo->ddir = DDIR_READ; | |
89ac1d48 | 249 | ipo->fileno = fileno; |
fdefd987 | 250 | |
bd6f78b2 JA |
251 | dprint(FD_BLKTRACE, "store ddir=%d, off=%llu, len=%lu, delay=%lu\n", |
252 | ipo->ddir, ipo->offset, | |
253 | ipo->len, ipo->delay); | |
691c8fb0 | 254 | queue_io_piece(td, ipo); |
fdefd987 JA |
255 | } |
256 | ||
0b9d69ec | 257 | static void handle_trace_notify(struct blk_io_trace *t) |
cd991b9e | 258 | { |
691c8fb0 JA |
259 | switch (t->action) { |
260 | case BLK_TN_PROCESS: | |
24653680 | 261 | dprint(FD_BLKTRACE, "got process notify: %x, %d\n", |
d95b34a6 | 262 | t->action, t->pid); |
691c8fb0 JA |
263 | break; |
264 | case BLK_TN_TIMESTAMP: | |
24653680 | 265 | dprint(FD_BLKTRACE, "got timestamp notify: %x, %d\n", |
d95b34a6 | 266 | t->action, t->pid); |
691c8fb0 | 267 | break; |
ff58fced JA |
268 | case BLK_TN_MESSAGE: |
269 | break; | |
691c8fb0 JA |
270 | default: |
271 | dprint(FD_BLKTRACE, "unknown trace act %x\n", t->action); | |
272 | break; | |
273 | } | |
274 | } | |
5b3023b8 | 275 | |
24653680 JA |
276 | static void handle_trace_discard(struct thread_data *td, |
277 | struct blk_io_trace *t, | |
278 | unsigned long long ttime, | |
26e616d0 | 279 | unsigned long *ios, unsigned int *rw_bs) |
ff58fced JA |
280 | { |
281 | struct io_piece *ipo = malloc(sizeof(*ipo)); | |
26e616d0 | 282 | unsigned int bs; |
89ac1d48 | 283 | int fileno; |
ff58fced | 284 | |
0d29de83 | 285 | init_ipo(ipo); |
26e616d0 | 286 | fileno = trace_add_file(td, t->device, &bs); |
ff58fced | 287 | |
24653680 | 288 | ios[DDIR_TRIM]++; |
26e616d0 JA |
289 | if (t->bytes > rw_bs[DDIR_TRIM]) |
290 | rw_bs[DDIR_TRIM] = t->bytes; | |
24653680 | 291 | |
ff58fced JA |
292 | td->o.size += t->bytes; |
293 | ||
294 | memset(ipo, 0, sizeof(*ipo)); | |
295 | INIT_FLIST_HEAD(&ipo->list); | |
296 | ||
26e616d0 | 297 | ipo->offset = t->sector * bs; |
0c63576e JA |
298 | if (td->o.replay_scale) |
299 | ipo->offset = ipo->offset / td->o.replay_scale; | |
300 | ipo_bytes_align(&td->o, ipo); | |
ff58fced JA |
301 | ipo->len = t->bytes; |
302 | ipo->delay = ttime / 1000; | |
303 | ipo->ddir = DDIR_TRIM; | |
89ac1d48 | 304 | ipo->fileno = fileno; |
ff58fced JA |
305 | |
306 | dprint(FD_BLKTRACE, "store discard, off=%llu, len=%lu, delay=%lu\n", | |
307 | ipo->offset, ipo->len, | |
308 | ipo->delay); | |
309 | queue_io_piece(td, ipo); | |
310 | } | |
311 | ||
691c8fb0 JA |
312 | static void handle_trace_fs(struct thread_data *td, struct blk_io_trace *t, |
313 | unsigned long long ttime, unsigned long *ios, | |
26e616d0 | 314 | unsigned int *rw_bs) |
691c8fb0 | 315 | { |
26e616d0 | 316 | unsigned int bs; |
691c8fb0 | 317 | int rw; |
89ac1d48 | 318 | int fileno; |
5b3023b8 | 319 | |
26e616d0 | 320 | fileno = trace_add_file(td, t->device, &bs); |
5b3023b8 JA |
321 | |
322 | rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; | |
323 | ||
26e616d0 JA |
324 | if (t->bytes > rw_bs[rw]) |
325 | rw_bs[rw] = t->bytes; | |
5b3023b8 JA |
326 | |
327 | ios[rw]++; | |
328 | td->o.size += t->bytes; | |
26e616d0 | 329 | store_ipo(td, t->sector, t->bytes, rw, ttime, fileno, bs); |
cd991b9e JA |
330 | } |
331 | ||
691c8fb0 JA |
332 | /* |
333 | * We only care for queue traces, most of the others are side effects | |
334 | * due to internal workings of the block layer. | |
335 | */ | |
336 | static void handle_trace(struct thread_data *td, struct blk_io_trace *t, | |
24653680 | 337 | unsigned long *ios, unsigned int *bs) |
691c8fb0 | 338 | { |
24653680 | 339 | static unsigned long long last_ttime; |
0c63576e | 340 | unsigned long long delay = 0; |
24653680 | 341 | |
691c8fb0 JA |
342 | if ((t->action & 0xffff) != __BLK_TA_QUEUE) |
343 | return; | |
24653680 JA |
344 | |
345 | if (!(t->action & BLK_TC_ACT(BLK_TC_NOTIFY))) { | |
346 | if (!last_ttime || td->o.no_stall) { | |
347 | last_ttime = t->time; | |
348 | delay = 0; | |
349 | } else { | |
350 | delay = t->time - last_ttime; | |
351 | last_ttime = t->time; | |
352 | } | |
353 | } | |
691c8fb0 | 354 | |
0c63576e JA |
355 | t_bytes_align(&td->o, t); |
356 | ||
691c8fb0 | 357 | if (t->action & BLK_TC_ACT(BLK_TC_NOTIFY)) |
aec2de20 | 358 | handle_trace_notify(t); |
ff58fced | 359 | else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD)) |
24653680 | 360 | handle_trace_discard(td, t, delay, ios, bs); |
691c8fb0 | 361 | else |
24653680 | 362 | handle_trace_fs(td, t, delay, ios, bs); |
691c8fb0 JA |
363 | } |
364 | ||
d95b34a6 JA |
365 | static void byteswap_trace(struct blk_io_trace *t) |
366 | { | |
367 | t->magic = fio_swap32(t->magic); | |
368 | t->sequence = fio_swap32(t->sequence); | |
369 | t->time = fio_swap64(t->time); | |
370 | t->sector = fio_swap64(t->sector); | |
371 | t->bytes = fio_swap32(t->bytes); | |
372 | t->action = fio_swap32(t->action); | |
373 | t->pid = fio_swap32(t->pid); | |
374 | t->device = fio_swap32(t->device); | |
375 | t->cpu = fio_swap32(t->cpu); | |
376 | t->error = fio_swap16(t->error); | |
377 | t->pdu_len = fio_swap16(t->pdu_len); | |
378 | } | |
379 | ||
24653680 JA |
380 | static int t_is_write(struct blk_io_trace *t) |
381 | { | |
382 | return (t->action & BLK_TC_ACT(BLK_TC_WRITE | BLK_TC_DISCARD)) != 0; | |
383 | } | |
384 | ||
a6eaf6c9 JA |
385 | static enum fio_ddir t_get_ddir(struct blk_io_trace *t) |
386 | { | |
387 | if (t->action & BLK_TC_ACT(BLK_TC_READ)) | |
388 | return DDIR_READ; | |
389 | else if (t->action & BLK_TC_ACT(BLK_TC_WRITE)) | |
390 | return DDIR_WRITE; | |
391 | else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD)) | |
392 | return DDIR_TRIM; | |
393 | ||
394 | return DDIR_INVAL; | |
395 | } | |
396 | ||
397 | static void depth_inc(struct blk_io_trace *t, int *depth) | |
398 | { | |
399 | enum fio_ddir ddir; | |
400 | ||
401 | ddir = t_get_ddir(t); | |
402 | if (ddir != DDIR_INVAL) | |
403 | depth[ddir]++; | |
404 | } | |
405 | ||
406 | static void depth_dec(struct blk_io_trace *t, int *depth) | |
407 | { | |
408 | enum fio_ddir ddir; | |
409 | ||
410 | ddir = t_get_ddir(t); | |
411 | if (ddir != DDIR_INVAL) | |
412 | depth[ddir]--; | |
413 | } | |
414 | ||
415 | static void depth_end(struct blk_io_trace *t, int *this_depth, int *depth) | |
416 | { | |
417 | enum fio_ddir ddir = DDIR_INVAL; | |
418 | ||
419 | ddir = t_get_ddir(t); | |
420 | if (ddir != DDIR_INVAL) { | |
421 | depth[ddir] = max(depth[ddir], this_depth[ddir]); | |
422 | this_depth[ddir] = 0; | |
423 | } | |
424 | } | |
425 | ||
8c1fdf04 JA |
426 | /* |
427 | * Load a blktrace file by reading all the blk_io_trace entries, and storing | |
428 | * them as io_pieces like the fio text version would do. | |
429 | */ | |
d95b34a6 | 430 | int load_blktrace(struct thread_data *td, const char *filename, int need_swap) |
fb7b71a3 JA |
431 | { |
432 | struct blk_io_trace t; | |
24653680 JA |
433 | unsigned long ios[DDIR_RWDIR_CNT], skipped_writes; |
434 | unsigned int rw_bs[DDIR_RWDIR_CNT]; | |
e2887563 | 435 | struct fifo *fifo; |
5903e7b7 | 436 | int fd, i, old_state; |
89ac1d48 | 437 | struct fio_file *f; |
a6eaf6c9 | 438 | int this_depth[DDIR_RWDIR_CNT], depth[DDIR_RWDIR_CNT], max_depth; |
fb7b71a3 JA |
439 | |
440 | fd = open(filename, O_RDONLY); | |
441 | if (fd < 0) { | |
442 | td_verror(td, errno, "open blktrace file"); | |
443 | return 1; | |
444 | } | |
445 | ||
e2887563 JA |
446 | fifo = fifo_alloc(TRACE_FIFO_SIZE); |
447 | ||
8edd973d | 448 | old_state = td_bump_runstate(td, TD_SETTING_UP); |
5903e7b7 | 449 | |
6df8adaa JA |
450 | td->o.size = 0; |
451 | ||
a6eaf6c9 JA |
452 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
453 | ios[i] = 0; | |
454 | rw_bs[i] = 0; | |
455 | this_depth[i] = 0; | |
456 | depth[i] = 0; | |
457 | } | |
458 | ||
4241ea8f | 459 | skipped_writes = 0; |
fb7b71a3 | 460 | do { |
e2887563 | 461 | int ret = trace_fifo_get(td, fifo, fd, &t, sizeof(t)); |
fb7b71a3 | 462 | |
e2887563 | 463 | if (ret < 0) |
8c1fdf04 | 464 | goto err; |
e2887563 JA |
465 | else if (!ret) |
466 | break; | |
467 | else if (ret < (int) sizeof(t)) { | |
468 | log_err("fio: short fifo get\n"); | |
fb7b71a3 | 469 | break; |
fb7b71a3 JA |
470 | } |
471 | ||
d95b34a6 JA |
472 | if (need_swap) |
473 | byteswap_trace(&t); | |
474 | ||
fb7b71a3 | 475 | if ((t.magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { |
5ec10eaa JA |
476 | log_err("fio: bad magic in blktrace data: %x\n", |
477 | t.magic); | |
8c1fdf04 | 478 | goto err; |
fb7b71a3 JA |
479 | } |
480 | if ((t.magic & 0xff) != BLK_IO_TRACE_VERSION) { | |
5ec10eaa JA |
481 | log_err("fio: bad blktrace version %d\n", |
482 | t.magic & 0xff); | |
8c1fdf04 | 483 | goto err; |
fb7b71a3 | 484 | } |
f12b323f JA |
485 | ret = discard_pdu(td, fifo, fd, &t); |
486 | if (ret < 0) { | |
fb7b71a3 | 487 | td_verror(td, ret, "blktrace lseek"); |
8c1fdf04 | 488 | goto err; |
f12b323f JA |
489 | } else if (t.pdu_len != ret) { |
490 | log_err("fio: discarded %d of %d\n", ret, t.pdu_len); | |
491 | goto err; | |
fb7b71a3 | 492 | } |
691c8fb0 | 493 | if ((t.action & BLK_TC_ACT(BLK_TC_NOTIFY)) == 0) { |
eb5fdcf1 | 494 | if ((t.action & 0xffff) == __BLK_TA_QUEUE) |
a6eaf6c9 JA |
495 | depth_inc(&t, this_depth); |
496 | else if (((t.action & 0xffff) == __BLK_TA_BACKMERGE) || | |
497 | ((t.action & 0xffff) == __BLK_TA_FRONTMERGE)) | |
498 | depth_dec(&t, this_depth); | |
499 | else if ((t.action & 0xffff) == __BLK_TA_COMPLETE) | |
500 | depth_end(&t, this_depth, depth); | |
691c8fb0 | 501 | |
24653680 | 502 | if (t_is_write(&t) && read_only) { |
691c8fb0 | 503 | skipped_writes++; |
24653680 | 504 | continue; |
64bbb865 | 505 | } |
a6edd638 | 506 | } |
24653680 JA |
507 | |
508 | handle_trace(td, &t, ios, rw_bs); | |
fb7b71a3 JA |
509 | } while (1); |
510 | ||
85a47ca2 | 511 | for (i = 0; i < td->files_index; i++) { |
f01b34ae | 512 | f = td->files[i]; |
89ac1d48 | 513 | trace_add_open_close_event(td, f->fileno, FIO_LOG_CLOSE_FILE); |
85a47ca2 | 514 | } |
89ac1d48 | 515 | |
38470f85 | 516 | fifo_free(fifo); |
fb7b71a3 | 517 | close(fd); |
8c1fdf04 | 518 | |
8edd973d | 519 | td_restore_runstate(td, old_state); |
5903e7b7 | 520 | |
f01b34ae JA |
521 | if (!td->files_index) { |
522 | log_err("fio: did not find replay device(s)\n"); | |
523 | return 1; | |
524 | } | |
525 | ||
eb5fdcf1 JA |
526 | /* |
527 | * For stacked devices, we don't always get a COMPLETE event so | |
528 | * the depth grows to insane values. Limit it to something sane(r). | |
529 | */ | |
a6eaf6c9 JA |
530 | max_depth = 0; |
531 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { | |
532 | if (depth[i] > 1024) | |
533 | depth[i] = 1024; | |
534 | else if (!depth[i] && ios[i]) | |
535 | depth[i] = 1; | |
536 | max_depth = max(depth[i], max_depth); | |
537 | } | |
eb5fdcf1 | 538 | |
4241ea8f | 539 | if (skipped_writes) |
5ec10eaa JA |
540 | log_err("fio: %s skips replay of %lu writes due to read-only\n", |
541 | td->o.name, skipped_writes); | |
4241ea8f | 542 | |
8c1fdf04 JA |
543 | if (!ios[DDIR_READ] && !ios[DDIR_WRITE]) { |
544 | log_err("fio: found no ios in blktrace data\n"); | |
545 | return 1; | |
24653680 | 546 | } else if (ios[DDIR_READ] && !ios[DDIR_WRITE]) { |
8c1fdf04 | 547 | td->o.td_ddir = TD_DDIR_READ; |
d84f8d49 JA |
548 | td->o.max_bs[DDIR_READ] = rw_bs[DDIR_READ]; |
549 | } else if (!ios[DDIR_READ] && ios[DDIR_WRITE]) { | |
8c1fdf04 | 550 | td->o.td_ddir = TD_DDIR_WRITE; |
d84f8d49 JA |
551 | td->o.max_bs[DDIR_WRITE] = rw_bs[DDIR_WRITE]; |
552 | } else { | |
8c1fdf04 | 553 | td->o.td_ddir = TD_DDIR_RW; |
d84f8d49 JA |
554 | td->o.max_bs[DDIR_READ] = rw_bs[DDIR_READ]; |
555 | td->o.max_bs[DDIR_WRITE] = rw_bs[DDIR_WRITE]; | |
24653680 | 556 | td->o.max_bs[DDIR_TRIM] = rw_bs[DDIR_TRIM]; |
d84f8d49 | 557 | } |
8c1fdf04 JA |
558 | |
559 | /* | |
560 | * We need to do direct/raw ios to the device, to avoid getting | |
76a00ec6 JA |
561 | * read-ahead in our way. But only do so if the minimum block size |
562 | * is a multiple of 4k, otherwise we don't know if it's safe to do so. | |
8c1fdf04 | 563 | */ |
76a00ec6 | 564 | if (!fio_option_is_set(&td->o, odirect) && !(td_min_bs(td) & 4095)) |
a6eaf6c9 | 565 | td->o.odirect = 1; |
8c1fdf04 | 566 | |
eb5fdcf1 | 567 | /* |
8a16f59b | 568 | * If depth wasn't manually set, use probed depth |
eb5fdcf1 | 569 | */ |
8a16f59b | 570 | if (!fio_option_is_set(&td->o, iodepth)) |
a6eaf6c9 | 571 | td->o.iodepth = td->o.iodepth_low = max_depth; |
eb5fdcf1 | 572 | |
fb7b71a3 | 573 | return 0; |
8c1fdf04 JA |
574 | err: |
575 | close(fd); | |
38470f85 | 576 | fifo_free(fifo); |
8c1fdf04 | 577 | return 1; |
fb7b71a3 | 578 | } |