Commit | Line | Data |
---|---|---|
e29d1b70 JA |
1 | /* |
2 | * IO verification helpers | |
3 | */ | |
4 | #include <unistd.h> | |
5 | #include <fcntl.h> | |
6 | #include <string.h> | |
97af62ce | 7 | #include <assert.h> |
e8462bd8 | 8 | #include <pthread.h> |
79402a12 | 9 | #include <libgen.h> |
e29d1b70 JA |
10 | |
11 | #include "fio.h" | |
4f5af7b2 | 12 | #include "verify.h" |
0d29de83 | 13 | #include "trim.h" |
637ef8d9 | 14 | #include "lib/rand.h" |
51aa2da8 | 15 | #include "lib/hweight.h" |
e29d1b70 | 16 | |
eef6eea1 JA |
17 | #include "crc/md5.h" |
18 | #include "crc/crc64.h" | |
19 | #include "crc/crc32.h" | |
bac39e0e | 20 | #include "crc/crc32c.h" |
eef6eea1 JA |
21 | #include "crc/crc16.h" |
22 | #include "crc/crc7.h" | |
23 | #include "crc/sha256.h" | |
24 | #include "crc/sha512.h" | |
7c353ceb | 25 | #include "crc/sha1.h" |
844ea602 | 26 | #include "crc/xxhash.h" |
cd14cc10 | 27 | |
7d9fb455 JA |
28 | static void populate_hdr(struct thread_data *td, struct io_u *io_u, |
29 | struct verify_header *hdr, unsigned int header_num, | |
30 | unsigned int header_len); | |
31 | ||
ce35b1ec JA |
32 | void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len) |
33 | { | |
632ae347 | 34 | fill_pattern(p, len, td->o.buffer_pattern, td->o.buffer_pattern_bytes); |
ce35b1ec JA |
35 | } |
36 | ||
37 | void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len, | |
38 | struct io_u *io_u, unsigned long seed, int use_seed) | |
39 | { | |
bc769898 JA |
40 | struct thread_options *o = &td->o; |
41 | ||
42 | if (!o->verify_pattern_bytes) { | |
ce35b1ec JA |
43 | dprint(FD_VERIFY, "fill random bytes len=%u\n", len); |
44 | ||
45 | if (use_seed) | |
bc769898 JA |
46 | __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes); |
47 | else { | |
48 | struct frand_state *fs = &td->verify_state; | |
49 | ||
50 | io_u->rand_seed = fill_random_buf_percentage(fs, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes); | |
51 | } | |
ce35b1ec JA |
52 | return; |
53 | } | |
c4b6117b | 54 | |
ce35b1ec JA |
55 | if (io_u->buf_filled_len >= len) { |
56 | dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n", | |
bc769898 | 57 | o->verify_pattern_bytes, len); |
ce35b1ec JA |
58 | return; |
59 | } | |
60 | ||
bc769898 | 61 | fill_pattern(p, len, o->verify_pattern, o->verify_pattern_bytes); |
ce35b1ec JA |
62 | io_u->buf_filled_len = len; |
63 | } | |
64 | ||
cfbcd0dc JA |
65 | static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u) |
66 | { | |
67 | unsigned int hdr_inc; | |
68 | ||
69 | hdr_inc = io_u->buflen; | |
8a99fdf6 | 70 | if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen) |
cfbcd0dc JA |
71 | hdr_inc = td->o.verify_interval; |
72 | ||
73 | return hdr_inc; | |
74 | } | |
75 | ||
c50ca7bd JA |
76 | static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u, |
77 | unsigned long seed, int use_seed) | |
78 | { | |
79 | unsigned int hdr_inc, header_num; | |
80 | struct verify_header *hdr; | |
81 | void *p = io_u->buf; | |
82 | ||
ce35b1ec | 83 | fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed); |
c50ca7bd | 84 | |
cfbcd0dc | 85 | hdr_inc = get_hdr_inc(td, io_u); |
c50ca7bd JA |
86 | header_num = 0; |
87 | for (; p < io_u->buf + io_u->buflen; p += hdr_inc) { | |
88 | hdr = p; | |
89 | populate_hdr(td, io_u, hdr, header_num, hdr_inc); | |
90 | header_num++; | |
91 | } | |
92 | } | |
93 | ||
4764aec9 | 94 | static void memswp(void *buf1, void *buf2, unsigned int len) |
546a9142 | 95 | { |
dee6de74 SL |
96 | char swap[200]; |
97 | ||
98 | assert(len <= sizeof(swap)); | |
90059d65 | 99 | |
546a9142 SL |
100 | memcpy(&swap, buf1, len); |
101 | memcpy(buf1, buf2, len); | |
102 | memcpy(buf2, &swap, len); | |
103 | } | |
104 | ||
e29d1b70 JA |
105 | static void hexdump(void *buffer, int len) |
106 | { | |
107 | unsigned char *p = buffer; | |
108 | int i; | |
109 | ||
110 | for (i = 0; i < len; i++) | |
bfacf389 JA |
111 | log_err("%02x", p[i]); |
112 | log_err("\n"); | |
e29d1b70 JA |
113 | } |
114 | ||
87677832 | 115 | /* |
de8f6de9 | 116 | * Prepare for separation of verify_header and checksum header |
87677832 | 117 | */ |
546dfd9f | 118 | static inline unsigned int __hdr_size(int verify_type) |
87677832 | 119 | { |
03e20d68 | 120 | unsigned int len = 0; |
87677832 | 121 | |
546dfd9f JA |
122 | switch (verify_type) { |
123 | case VERIFY_NONE: | |
124 | case VERIFY_NULL: | |
125 | len = 0; | |
126 | break; | |
127 | case VERIFY_MD5: | |
128 | len = sizeof(struct vhdr_md5); | |
129 | break; | |
130 | case VERIFY_CRC64: | |
131 | len = sizeof(struct vhdr_crc64); | |
132 | break; | |
bac39e0e | 133 | case VERIFY_CRC32C: |
546dfd9f | 134 | case VERIFY_CRC32: |
3845591f | 135 | case VERIFY_CRC32C_INTEL: |
546dfd9f JA |
136 | len = sizeof(struct vhdr_crc32); |
137 | break; | |
138 | case VERIFY_CRC16: | |
139 | len = sizeof(struct vhdr_crc16); | |
140 | break; | |
141 | case VERIFY_CRC7: | |
142 | len = sizeof(struct vhdr_crc7); | |
143 | break; | |
144 | case VERIFY_SHA256: | |
145 | len = sizeof(struct vhdr_sha256); | |
146 | break; | |
147 | case VERIFY_SHA512: | |
148 | len = sizeof(struct vhdr_sha512); | |
149 | break; | |
844ea602 JA |
150 | case VERIFY_XXHASH: |
151 | len = sizeof(struct vhdr_xxhash); | |
152 | break; | |
7437ee87 SL |
153 | case VERIFY_META: |
154 | len = sizeof(struct vhdr_meta); | |
155 | break; | |
7c353ceb JA |
156 | case VERIFY_SHA1: |
157 | len = sizeof(struct vhdr_sha1); | |
158 | break; | |
92bf48d5 JA |
159 | case VERIFY_PATTERN: |
160 | len = 0; | |
161 | break; | |
546dfd9f JA |
162 | default: |
163 | log_err("fio: unknown verify header!\n"); | |
164 | assert(0); | |
165 | } | |
166 | ||
167 | return len + sizeof(struct verify_header); | |
87677832 JA |
168 | } |
169 | ||
170 | static inline unsigned int hdr_size(struct verify_header *hdr) | |
171 | { | |
546dfd9f JA |
172 | return __hdr_size(hdr->verify_type); |
173 | } | |
174 | ||
175 | static void *hdr_priv(struct verify_header *hdr) | |
176 | { | |
177 | void *priv = hdr; | |
178 | ||
179 | return priv + sizeof(struct verify_header); | |
87677832 JA |
180 | } |
181 | ||
936216f8 JA |
182 | /* |
183 | * Verify container, pass info to verify handlers and allow them to | |
184 | * pass info back in case of error | |
185 | */ | |
186 | struct vcont { | |
187 | /* | |
188 | * Input | |
189 | */ | |
190 | struct io_u *io_u; | |
191 | unsigned int hdr_num; | |
7d9fb455 | 192 | struct thread_data *td; |
936216f8 JA |
193 | |
194 | /* | |
195 | * Output, only valid in case of error | |
196 | */ | |
bfacf389 JA |
197 | const char *name; |
198 | void *good_crc; | |
199 | void *bad_crc; | |
936216f8 JA |
200 | unsigned int crc_len; |
201 | }; | |
202 | ||
dacbbb88 JA |
203 | #define DUMP_BUF_SZ 255 |
204 | static int dump_buf_warned; | |
205 | ||
c50ca7bd JA |
206 | static void dump_buf(char *buf, unsigned int len, unsigned long long offset, |
207 | const char *type, struct fio_file *f) | |
7d9fb455 | 208 | { |
dacbbb88 JA |
209 | char *ptr, fname[DUMP_BUF_SZ]; |
210 | size_t buf_left = DUMP_BUF_SZ; | |
7d9fb455 JA |
211 | int ret, fd; |
212 | ||
6f260b31 | 213 | ptr = strdup(f->file_name); |
c50ca7bd | 214 | |
dacbbb88 JA |
215 | fname[DUMP_BUF_SZ - 1] = '\0'; |
216 | strncpy(fname, basename(ptr), DUMP_BUF_SZ - 1); | |
217 | ||
218 | buf_left -= strlen(fname); | |
219 | if (buf_left <= 0) { | |
220 | if (!dump_buf_warned) { | |
221 | log_err("fio: verify failure dump buffer too small\n"); | |
222 | dump_buf_warned = 1; | |
223 | } | |
224 | free(ptr); | |
225 | return; | |
226 | } | |
227 | ||
228 | snprintf(fname + strlen(fname), buf_left, ".%llu.%s", offset, type); | |
7d9fb455 JA |
229 | |
230 | fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644); | |
231 | if (fd < 0) { | |
232 | perror("open verify buf file"); | |
233 | return; | |
234 | } | |
235 | ||
236 | while (len) { | |
237 | ret = write(fd, buf, len); | |
238 | if (!ret) | |
239 | break; | |
240 | else if (ret < 0) { | |
241 | perror("write verify buf file"); | |
242 | break; | |
243 | } | |
244 | len -= ret; | |
245 | buf += ret; | |
246 | } | |
247 | ||
248 | close(fd); | |
c50ca7bd | 249 | log_err(" %s data dumped as %s\n", type, fname); |
6f260b31 | 250 | free(ptr); |
7d9fb455 JA |
251 | } |
252 | ||
c50ca7bd JA |
253 | /* |
254 | * Dump the contents of the read block and re-generate the correct data | |
255 | * and dump that too. | |
256 | */ | |
7d9fb455 JA |
257 | static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc) |
258 | { | |
259 | struct thread_data *td = vc->td; | |
260 | struct io_u *io_u = vc->io_u; | |
261 | unsigned long hdr_offset; | |
7d9fb455 | 262 | struct io_u dummy; |
c50ca7bd | 263 | void *buf; |
7d9fb455 | 264 | |
0dce9bc9 SL |
265 | if (!td->o.verify_dump) |
266 | return; | |
267 | ||
c50ca7bd JA |
268 | /* |
269 | * Dump the contents we just read off disk | |
270 | */ | |
7d9fb455 JA |
271 | hdr_offset = vc->hdr_num * hdr->len; |
272 | ||
c50ca7bd JA |
273 | dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset, |
274 | "received", vc->io_u->file); | |
7d9fb455 | 275 | |
c50ca7bd JA |
276 | /* |
277 | * Allocate a new buf and re-generate the original data | |
278 | */ | |
279 | buf = malloc(io_u->buflen); | |
7d9fb455 | 280 | dummy = *io_u; |
c50ca7bd | 281 | dummy.buf = buf; |
4aae38a6 | 282 | dummy.rand_seed = hdr->rand_seed; |
cfbcd0dc | 283 | dummy.buf_filled_len = 0; |
0d81daf9 | 284 | dummy.buflen = io_u->buflen; |
7d9fb455 | 285 | |
c50ca7bd | 286 | fill_pattern_headers(td, &dummy, hdr->rand_seed, 1); |
7d9fb455 | 287 | |
c50ca7bd JA |
288 | dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset, |
289 | "expected", vc->io_u->file); | |
7d9fb455 JA |
290 | free(buf); |
291 | } | |
292 | ||
bfacf389 JA |
293 | static void log_verify_failure(struct verify_header *hdr, struct vcont *vc) |
294 | { | |
295 | unsigned long long offset; | |
296 | ||
297 | offset = vc->io_u->offset; | |
298 | offset += vc->hdr_num * hdr->len; | |
32c17adf JA |
299 | log_err("%.8s: verify failed at file %s offset %llu, length %u\n", |
300 | vc->name, vc->io_u->file->file_name, offset, hdr->len); | |
bfacf389 JA |
301 | |
302 | if (vc->good_crc && vc->bad_crc) { | |
303 | log_err(" Expected CRC: "); | |
304 | hexdump(vc->good_crc, vc->crc_len); | |
305 | log_err(" Received CRC: "); | |
306 | hexdump(vc->bad_crc, vc->crc_len); | |
307 | } | |
7d9fb455 JA |
308 | |
309 | dump_verify_buffers(hdr, vc); | |
bfacf389 JA |
310 | } |
311 | ||
d9f2caf3 JA |
312 | /* |
313 | * Return data area 'header_num' | |
314 | */ | |
936216f8 | 315 | static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc) |
d9f2caf3 | 316 | { |
936216f8 | 317 | return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr); |
d9f2caf3 JA |
318 | } |
319 | ||
92bf48d5 JA |
320 | static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc) |
321 | { | |
322 | struct thread_data *td = vc->td; | |
323 | struct io_u *io_u = vc->io_u; | |
324 | char *buf, *pattern; | |
2b13e716 | 325 | unsigned int header_size = __hdr_size(td->o.verify); |
9a2a86d0 | 326 | unsigned int len, mod, i, size, pattern_size; |
92bf48d5 JA |
327 | |
328 | pattern = td->o.verify_pattern; | |
9a2a86d0 SL |
329 | pattern_size = td->o.verify_pattern_bytes; |
330 | if (pattern_size <= 1) | |
331 | pattern_size = MAX_PATTERN_SIZE; | |
2b13e716 JA |
332 | buf = (void *) hdr + header_size; |
333 | len = get_hdr_inc(td, io_u) - header_size; | |
9a2a86d0 SL |
334 | mod = header_size % pattern_size; |
335 | ||
336 | for (i = 0; i < len; i += size) { | |
337 | size = pattern_size - mod; | |
338 | if (size > (len - i)) | |
339 | size = len - i; | |
340 | if (memcmp(buf + i, pattern + mod, size)) | |
e4ad68b1 | 341 | /* Let the slow compare find the first mismatch byte. */ |
9a2a86d0 SL |
342 | break; |
343 | mod = 0; | |
344 | } | |
92bf48d5 | 345 | |
9a2a86d0 | 346 | for (; i < len; i++) { |
92bf48d5 JA |
347 | if (buf[i] != pattern[mod]) { |
348 | unsigned int bits; | |
349 | ||
350 | bits = hweight8(buf[i] ^ pattern[mod]); | |
351 | log_err("fio: got pattern %x, wanted %x. Bad bits %d\n", | |
352 | buf[i], pattern[mod], bits); | |
353 | log_err("fio: bad pattern block offset %u\n", i); | |
354 | dump_verify_buffers(hdr, vc); | |
355 | return EILSEQ; | |
356 | } | |
357 | mod++; | |
358 | if (mod == td->o.verify_pattern_bytes) | |
359 | mod = 0; | |
360 | } | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc) | |
7437ee87 | 366 | { |
92bf48d5 | 367 | struct thread_data *td = vc->td; |
7437ee87 | 368 | struct vhdr_meta *vh = hdr_priv(hdr); |
936216f8 | 369 | struct io_u *io_u = vc->io_u; |
92bf48d5 | 370 | int ret = EILSEQ; |
7437ee87 | 371 | |
bd6f78b2 JA |
372 | dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len); |
373 | ||
bfacf389 | 374 | if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval) |
92bf48d5 JA |
375 | ret = 0; |
376 | ||
377 | if (td->o.verify_pattern_bytes) | |
378 | ret |= verify_io_u_pattern(hdr, vc); | |
379 | ||
da0a7bd2 JC |
380 | /* |
381 | * For read-only workloads, the program cannot be certain of the | |
8bca6016 JA |
382 | * last numberio written to a block. Checking of numberio will be |
383 | * done only for workloads that write data. For verify_only, | |
384 | * numberio will be checked in the last iteration when the correct | |
385 | * state of numberio, that would have been written to each block | |
386 | * in a previous run of fio, has been reached. | |
da0a7bd2 | 387 | */ |
b7f5c00d JA |
388 | if ((td_write(td) || td_rw(td)) && (td_min_bs(td) == td_max_bs(td)) && |
389 | !td->o.time_based) | |
62167762 JC |
390 | if (!td->o.verify_only || td->o.loops == 0) |
391 | if (vh->numberio != io_u->numberio) | |
392 | ret = EILSEQ; | |
da0a7bd2 | 393 | |
92bf48d5 | 394 | if (!ret) |
bfacf389 | 395 | return 0; |
7437ee87 | 396 | |
bfacf389 JA |
397 | vc->name = "meta"; |
398 | log_verify_failure(hdr, vc); | |
92bf48d5 | 399 | return ret; |
7437ee87 SL |
400 | } |
401 | ||
844ea602 JA |
402 | static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc) |
403 | { | |
404 | void *p = io_u_verify_off(hdr, vc); | |
405 | struct vhdr_xxhash *vh = hdr_priv(hdr); | |
406 | uint32_t hash; | |
407 | void *state; | |
408 | ||
409 | dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len); | |
410 | ||
411 | state = XXH32_init(1); | |
412 | XXH32_update(state, p, hdr->len - hdr_size(hdr)); | |
413 | hash = XXH32_digest(state); | |
414 | ||
415 | if (vh->hash == hash) | |
416 | return 0; | |
417 | ||
418 | vc->name = "xxhash"; | |
419 | vc->good_crc = &vh->hash; | |
420 | vc->bad_crc = &hash; | |
421 | vc->crc_len = sizeof(hash); | |
422 | log_verify_failure(hdr, vc); | |
423 | return EILSEQ; | |
424 | } | |
425 | ||
936216f8 | 426 | static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc) |
cd14cc10 | 427 | { |
936216f8 | 428 | void *p = io_u_verify_off(hdr, vc); |
546dfd9f | 429 | struct vhdr_sha512 *vh = hdr_priv(hdr); |
cd14cc10 | 430 | uint8_t sha512[128]; |
25dfa848 | 431 | struct fio_sha512_ctx sha512_ctx = { |
cd14cc10 JA |
432 | .buf = sha512, |
433 | }; | |
434 | ||
936216f8 | 435 | dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
bd6f78b2 | 436 | |
25dfa848 JA |
437 | fio_sha512_init(&sha512_ctx); |
438 | fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr)); | |
cd14cc10 | 439 | |
bfacf389 JA |
440 | if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512))) |
441 | return 0; | |
cd14cc10 | 442 | |
bfacf389 JA |
443 | vc->name = "sha512"; |
444 | vc->good_crc = vh->sha512; | |
445 | vc->bad_crc = sha512_ctx.buf; | |
446 | vc->crc_len = sizeof(vh->sha512); | |
447 | log_verify_failure(hdr, vc); | |
448 | return EILSEQ; | |
cd14cc10 JA |
449 | } |
450 | ||
936216f8 | 451 | static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc) |
cd14cc10 | 452 | { |
936216f8 | 453 | void *p = io_u_verify_off(hdr, vc); |
546dfd9f | 454 | struct vhdr_sha256 *vh = hdr_priv(hdr); |
bc77f56f | 455 | uint8_t sha256[64]; |
25dfa848 | 456 | struct fio_sha256_ctx sha256_ctx = { |
cd14cc10 JA |
457 | .buf = sha256, |
458 | }; | |
459 | ||
936216f8 | 460 | dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
bd6f78b2 | 461 | |
25dfa848 JA |
462 | fio_sha256_init(&sha256_ctx); |
463 | fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr)); | |
cd14cc10 | 464 | |
bfacf389 JA |
465 | if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256))) |
466 | return 0; | |
cd14cc10 | 467 | |
bfacf389 JA |
468 | vc->name = "sha256"; |
469 | vc->good_crc = vh->sha256; | |
470 | vc->bad_crc = sha256_ctx.buf; | |
471 | vc->crc_len = sizeof(vh->sha256); | |
472 | log_verify_failure(hdr, vc); | |
473 | return EILSEQ; | |
cd14cc10 JA |
474 | } |
475 | ||
936216f8 | 476 | static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc) |
7c353ceb | 477 | { |
936216f8 | 478 | void *p = io_u_verify_off(hdr, vc); |
7c353ceb JA |
479 | struct vhdr_sha1 *vh = hdr_priv(hdr); |
480 | uint32_t sha1[5]; | |
25dfa848 | 481 | struct fio_sha1_ctx sha1_ctx = { |
7c353ceb JA |
482 | .H = sha1, |
483 | }; | |
484 | ||
936216f8 | 485 | dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
7c353ceb | 486 | |
25dfa848 JA |
487 | fio_sha1_init(&sha1_ctx); |
488 | fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr)); | |
7c353ceb | 489 | |
bfacf389 JA |
490 | if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1))) |
491 | return 0; | |
7c353ceb | 492 | |
bfacf389 JA |
493 | vc->name = "sha1"; |
494 | vc->good_crc = vh->sha1; | |
495 | vc->bad_crc = sha1_ctx.H; | |
496 | vc->crc_len = sizeof(vh->sha1); | |
497 | log_verify_failure(hdr, vc); | |
498 | return EILSEQ; | |
7c353ceb JA |
499 | } |
500 | ||
936216f8 | 501 | static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc) |
1e154bdb | 502 | { |
936216f8 | 503 | void *p = io_u_verify_off(hdr, vc); |
546dfd9f | 504 | struct vhdr_crc7 *vh = hdr_priv(hdr); |
1e154bdb JA |
505 | unsigned char c; |
506 | ||
936216f8 | 507 | dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
bd6f78b2 | 508 | |
25dfa848 | 509 | c = fio_crc7(p, hdr->len - hdr_size(hdr)); |
1e154bdb | 510 | |
bfacf389 JA |
511 | if (c == vh->crc7) |
512 | return 0; | |
1e154bdb | 513 | |
bfacf389 JA |
514 | vc->name = "crc7"; |
515 | vc->good_crc = &vh->crc7; | |
516 | vc->bad_crc = &c; | |
517 | vc->crc_len = 1; | |
518 | log_verify_failure(hdr, vc); | |
519 | return EILSEQ; | |
1e154bdb JA |
520 | } |
521 | ||
936216f8 | 522 | static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc) |
969f7ed3 | 523 | { |
936216f8 | 524 | void *p = io_u_verify_off(hdr, vc); |
546dfd9f | 525 | struct vhdr_crc16 *vh = hdr_priv(hdr); |
969f7ed3 JA |
526 | unsigned short c; |
527 | ||
936216f8 | 528 | dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
bd6f78b2 | 529 | |
25dfa848 | 530 | c = fio_crc16(p, hdr->len - hdr_size(hdr)); |
969f7ed3 | 531 | |
bfacf389 JA |
532 | if (c == vh->crc16) |
533 | return 0; | |
969f7ed3 | 534 | |
bfacf389 JA |
535 | vc->name = "crc16"; |
536 | vc->good_crc = &vh->crc16; | |
537 | vc->bad_crc = &c; | |
538 | vc->crc_len = 2; | |
539 | log_verify_failure(hdr, vc); | |
540 | return EILSEQ; | |
969f7ed3 JA |
541 | } |
542 | ||
936216f8 | 543 | static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc) |
d77a7af3 | 544 | { |
936216f8 | 545 | void *p = io_u_verify_off(hdr, vc); |
546dfd9f | 546 | struct vhdr_crc64 *vh = hdr_priv(hdr); |
d77a7af3 JA |
547 | unsigned long long c; |
548 | ||
936216f8 | 549 | dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
bd6f78b2 | 550 | |
25dfa848 | 551 | c = fio_crc64(p, hdr->len - hdr_size(hdr)); |
d77a7af3 | 552 | |
bfacf389 JA |
553 | if (c == vh->crc64) |
554 | return 0; | |
d77a7af3 | 555 | |
bfacf389 JA |
556 | vc->name = "crc64"; |
557 | vc->good_crc = &vh->crc64; | |
558 | vc->bad_crc = &c; | |
559 | vc->crc_len = 8; | |
560 | log_verify_failure(hdr, vc); | |
561 | return EILSEQ; | |
d77a7af3 JA |
562 | } |
563 | ||
936216f8 | 564 | static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc) |
e29d1b70 | 565 | { |
936216f8 | 566 | void *p = io_u_verify_off(hdr, vc); |
546dfd9f JA |
567 | struct vhdr_crc32 *vh = hdr_priv(hdr); |
568 | uint32_t c; | |
e29d1b70 | 569 | |
936216f8 | 570 | dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
bd6f78b2 | 571 | |
25dfa848 | 572 | c = fio_crc32(p, hdr->len - hdr_size(hdr)); |
e29d1b70 | 573 | |
bfacf389 JA |
574 | if (c == vh->crc32) |
575 | return 0; | |
e29d1b70 | 576 | |
bfacf389 JA |
577 | vc->name = "crc32"; |
578 | vc->good_crc = &vh->crc32; | |
579 | vc->bad_crc = &c; | |
580 | vc->crc_len = 4; | |
581 | log_verify_failure(hdr, vc); | |
582 | return EILSEQ; | |
e29d1b70 JA |
583 | } |
584 | ||
936216f8 | 585 | static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc) |
bac39e0e | 586 | { |
936216f8 | 587 | void *p = io_u_verify_off(hdr, vc); |
bac39e0e JA |
588 | struct vhdr_crc32 *vh = hdr_priv(hdr); |
589 | uint32_t c; | |
590 | ||
936216f8 | 591 | dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len); |
bac39e0e | 592 | |
25dfa848 | 593 | c = fio_crc32c(p, hdr->len - hdr_size(hdr)); |
bac39e0e | 594 | |
bfacf389 JA |
595 | if (c == vh->crc32) |
596 | return 0; | |
bac39e0e | 597 | |
bfacf389 JA |
598 | vc->name = "crc32c"; |
599 | vc->good_crc = &vh->crc32; | |
600 | vc->bad_crc = &c; | |
601 | vc->crc_len = 4; | |
602 | log_verify_failure(hdr, vc); | |
603 | return EILSEQ; | |
bac39e0e JA |
604 | } |
605 | ||
936216f8 | 606 | static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc) |
e29d1b70 | 607 | { |
936216f8 | 608 | void *p = io_u_verify_off(hdr, vc); |
546dfd9f | 609 | struct vhdr_md5 *vh = hdr_priv(hdr); |
8c432325 | 610 | uint32_t hash[MD5_HASH_WORDS]; |
25dfa848 | 611 | struct fio_md5_ctx md5_ctx = { |
8c432325 JA |
612 | .hash = hash, |
613 | }; | |
e29d1b70 | 614 | |
936216f8 | 615 | dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
bd6f78b2 | 616 | |
25dfa848 JA |
617 | fio_md5_init(&md5_ctx); |
618 | fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr)); | |
e29d1b70 | 619 | |
bfacf389 JA |
620 | if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash))) |
621 | return 0; | |
e29d1b70 | 622 | |
bfacf389 JA |
623 | vc->name = "md5"; |
624 | vc->good_crc = vh->md5_digest; | |
625 | vc->bad_crc = md5_ctx.hash; | |
626 | vc->crc_len = sizeof(hash); | |
627 | log_verify_failure(hdr, vc); | |
628 | return EILSEQ; | |
e29d1b70 JA |
629 | } |
630 | ||
e8462bd8 JA |
631 | /* |
632 | * Push IO verification to a separate thread | |
633 | */ | |
f8b0bd10 | 634 | int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr) |
e8462bd8 | 635 | { |
f8b0bd10 | 636 | struct io_u *io_u = *io_u_ptr; |
e8462bd8 | 637 | |
e8462bd8 | 638 | pthread_mutex_lock(&td->io_u_lock); |
d7ee2a7d | 639 | |
f8b0bd10 JA |
640 | if (io_u->file) |
641 | put_file_log(td, io_u->file); | |
642 | ||
0c41214f RR |
643 | if (io_u->flags & IO_U_F_IN_CUR_DEPTH) { |
644 | td->cur_depth--; | |
645 | io_u->flags &= ~IO_U_F_IN_CUR_DEPTH; | |
646 | } | |
2ae0b204 | 647 | flist_add_tail(&io_u->verify_list, &td->verify_list); |
f8b0bd10 | 648 | *io_u_ptr = NULL; |
e8462bd8 JA |
649 | pthread_mutex_unlock(&td->io_u_lock); |
650 | ||
651 | pthread_cond_signal(&td->verify_cond); | |
e8462bd8 JA |
652 | return 0; |
653 | } | |
654 | ||
0d29de83 JA |
655 | static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u) |
656 | { | |
657 | static char zero_buf[1024]; | |
658 | unsigned int this_len, len; | |
659 | int ret = 0; | |
660 | void *p; | |
661 | ||
662 | if (!td->o.trim_zero) | |
663 | return 0; | |
664 | ||
665 | len = io_u->buflen; | |
666 | p = io_u->buf; | |
667 | do { | |
668 | this_len = sizeof(zero_buf); | |
669 | if (this_len > len) | |
670 | this_len = len; | |
671 | if (memcmp(p, zero_buf, this_len)) { | |
672 | ret = EILSEQ; | |
673 | break; | |
674 | } | |
675 | len -= this_len; | |
676 | p += this_len; | |
677 | } while (len); | |
678 | ||
679 | if (!ret) | |
680 | return 0; | |
681 | ||
a917a8b3 JA |
682 | log_err("trim: verify failed at file %s offset %llu, length %lu" |
683 | ", block offset %lu\n", | |
684 | io_u->file->file_name, io_u->offset, io_u->buflen, | |
2f68124f | 685 | (unsigned long) (p - io_u->buf)); |
0d29de83 JA |
686 | return ret; |
687 | } | |
688 | ||
5964842c AG |
689 | static int verify_header(struct io_u *io_u, struct verify_header *hdr, |
690 | unsigned int hdr_num, unsigned int hdr_len) | |
f65d1c26 JA |
691 | { |
692 | void *p = hdr; | |
693 | uint32_t crc; | |
694 | ||
5964842c AG |
695 | if (hdr->magic != FIO_HDR_MAGIC) { |
696 | log_err("verify: bad magic header %x, wanted %x", | |
697 | hdr->magic, FIO_HDR_MAGIC); | |
698 | goto err; | |
699 | } | |
4445856a | 700 | if (hdr->len != hdr_len) { |
5964842c AG |
701 | log_err("verify: bad header length %u, wanted %u", |
702 | hdr->len, hdr_len); | |
703 | goto err; | |
704 | } | |
705 | if (hdr->rand_seed != io_u->rand_seed) { | |
706 | log_err("verify: bad header rand_seed %"PRIu64 | |
707 | ", wanted %"PRIu64, | |
708 | hdr->rand_seed, io_u->rand_seed); | |
709 | goto err; | |
710 | } | |
ae38c0dc | 711 | |
25dfa848 | 712 | crc = fio_crc32c(p, offsetof(struct verify_header, crc32)); |
5964842c AG |
713 | if (crc != hdr->crc32) { |
714 | log_err("verify: bad header crc %x, calculated %x", | |
715 | hdr->crc32, crc); | |
716 | goto err; | |
717 | } | |
718 | return 0; | |
719 | ||
720 | err: | |
721 | log_err(" at file %s offset %llu, length %u\n", | |
722 | io_u->file->file_name, | |
723 | io_u->offset + hdr_num * hdr_len, hdr_len); | |
724 | return EILSEQ; | |
f65d1c26 JA |
725 | } |
726 | ||
f8b0bd10 | 727 | int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr) |
e29d1b70 | 728 | { |
3f9f4e26 | 729 | struct verify_header *hdr; |
f8b0bd10 | 730 | struct io_u *io_u = *io_u_ptr; |
2b13e716 | 731 | unsigned int header_size, hdr_inc, hdr_num = 0; |
95646108 | 732 | void *p; |
e29d1b70 JA |
733 | int ret; |
734 | ||
1dcc0498 | 735 | if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ) |
36690c9b | 736 | return 0; |
5c57c084 JA |
737 | /* |
738 | * If the IO engine is faking IO (like null), then just pretend | |
739 | * we verified everything. | |
740 | */ | |
741 | if (td->io_ops->flags & FIO_FAKEIO) | |
742 | return 0; | |
743 | ||
0d29de83 JA |
744 | if (io_u->flags & IO_U_F_TRIMMED) { |
745 | ret = verify_trimmed_io_u(td, io_u); | |
746 | goto done; | |
747 | } | |
36690c9b | 748 | |
cfbcd0dc | 749 | hdr_inc = get_hdr_inc(td, io_u); |
e29d1b70 | 750 | |
a12a3b4d | 751 | ret = 0; |
5ec10eaa JA |
752 | for (p = io_u->buf; p < io_u->buf + io_u->buflen; |
753 | p += hdr_inc, hdr_num++) { | |
bfacf389 JA |
754 | struct vcont vc = { |
755 | .io_u = io_u, | |
756 | .hdr_num = hdr_num, | |
7d9fb455 | 757 | .td = td, |
bfacf389 | 758 | }; |
f00b210f | 759 | unsigned int verify_type; |
936216f8 | 760 | |
f3e6cb95 | 761 | if (ret && td->o.verify_fatal) |
a12a3b4d | 762 | break; |
f3e6cb95 | 763 | |
2b13e716 | 764 | header_size = __hdr_size(td->o.verify); |
a59e170d | 765 | if (td->o.verify_offset) |
2b13e716 | 766 | memswp(p, p + td->o.verify_offset, header_size); |
95646108 | 767 | hdr = p; |
e29d1b70 | 768 | |
c4b6117b PV |
769 | /* |
770 | * Make rand_seed check pass when have verifysort or | |
771 | * verify_backlog. | |
772 | */ | |
773 | if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG)) | |
774 | io_u->rand_seed = hdr->rand_seed; | |
775 | ||
5964842c AG |
776 | ret = verify_header(io_u, hdr, hdr_num, hdr_inc); |
777 | if (ret) | |
778 | return ret; | |
3f199b01 | 779 | |
f00b210f JA |
780 | if (td->o.verify != VERIFY_NONE) |
781 | verify_type = td->o.verify; | |
782 | else | |
783 | verify_type = hdr->verify_type; | |
784 | ||
785 | switch (verify_type) { | |
3f9f4e26 | 786 | case VERIFY_MD5: |
936216f8 | 787 | ret = verify_io_u_md5(hdr, &vc); |
3f9f4e26 SL |
788 | break; |
789 | case VERIFY_CRC64: | |
936216f8 | 790 | ret = verify_io_u_crc64(hdr, &vc); |
3f9f4e26 | 791 | break; |
bac39e0e | 792 | case VERIFY_CRC32C: |
3845591f | 793 | case VERIFY_CRC32C_INTEL: |
936216f8 | 794 | ret = verify_io_u_crc32c(hdr, &vc); |
bac39e0e | 795 | break; |
3f9f4e26 | 796 | case VERIFY_CRC32: |
936216f8 | 797 | ret = verify_io_u_crc32(hdr, &vc); |
3f9f4e26 SL |
798 | break; |
799 | case VERIFY_CRC16: | |
936216f8 | 800 | ret = verify_io_u_crc16(hdr, &vc); |
3f9f4e26 SL |
801 | break; |
802 | case VERIFY_CRC7: | |
936216f8 | 803 | ret = verify_io_u_crc7(hdr, &vc); |
3f9f4e26 | 804 | break; |
cd14cc10 | 805 | case VERIFY_SHA256: |
936216f8 | 806 | ret = verify_io_u_sha256(hdr, &vc); |
cd14cc10 JA |
807 | break; |
808 | case VERIFY_SHA512: | |
936216f8 | 809 | ret = verify_io_u_sha512(hdr, &vc); |
cd14cc10 | 810 | break; |
844ea602 JA |
811 | case VERIFY_XXHASH: |
812 | ret = verify_io_u_xxhash(hdr, &vc); | |
813 | break; | |
7437ee87 | 814 | case VERIFY_META: |
92bf48d5 | 815 | ret = verify_io_u_meta(hdr, &vc); |
7437ee87 | 816 | break; |
7c353ceb | 817 | case VERIFY_SHA1: |
936216f8 | 818 | ret = verify_io_u_sha1(hdr, &vc); |
7c353ceb | 819 | break; |
92bf48d5 JA |
820 | case VERIFY_PATTERN: |
821 | ret = verify_io_u_pattern(hdr, &vc); | |
822 | break; | |
3f9f4e26 SL |
823 | default: |
824 | log_err("Bad verify type %u\n", hdr->verify_type); | |
d16d4e09 | 825 | ret = EINVAL; |
3f9f4e26 | 826 | } |
f00b210f JA |
827 | |
828 | if (ret && verify_type != hdr->verify_type) | |
829 | log_err("fio: verify type mismatch (%u media, %u given)\n", | |
830 | hdr->verify_type, verify_type); | |
3f9f4e26 | 831 | } |
a7dfe862 | 832 | |
0d29de83 | 833 | done: |
f3e6cb95 | 834 | if (ret && td->o.verify_fatal) |
ebea2133 | 835 | fio_mark_td_terminate(td); |
f3e6cb95 | 836 | |
a12a3b4d | 837 | return ret; |
e29d1b70 JA |
838 | } |
839 | ||
7437ee87 | 840 | static void fill_meta(struct verify_header *hdr, struct thread_data *td, |
5ec10eaa | 841 | struct io_u *io_u, unsigned int header_num) |
7437ee87 SL |
842 | { |
843 | struct vhdr_meta *vh = hdr_priv(hdr); | |
844 | ||
845 | vh->thread = td->thread_number; | |
846 | ||
847 | vh->time_sec = io_u->start_time.tv_sec; | |
848 | vh->time_usec = io_u->start_time.tv_usec; | |
849 | ||
da0a7bd2 | 850 | vh->numberio = io_u->numberio; |
7437ee87 SL |
851 | |
852 | vh->offset = io_u->offset + header_num * td->o.verify_interval; | |
853 | } | |
854 | ||
844ea602 JA |
855 | static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len) |
856 | { | |
857 | struct vhdr_xxhash *vh = hdr_priv(hdr); | |
858 | void *state; | |
859 | ||
860 | state = XXH32_init(1); | |
861 | XXH32_update(state, p, len); | |
862 | vh->hash = XXH32_digest(state); | |
863 | } | |
864 | ||
cd14cc10 JA |
865 | static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len) |
866 | { | |
546dfd9f | 867 | struct vhdr_sha512 *vh = hdr_priv(hdr); |
25dfa848 | 868 | struct fio_sha512_ctx sha512_ctx = { |
546dfd9f | 869 | .buf = vh->sha512, |
cd14cc10 JA |
870 | }; |
871 | ||
25dfa848 JA |
872 | fio_sha512_init(&sha512_ctx); |
873 | fio_sha512_update(&sha512_ctx, p, len); | |
cd14cc10 JA |
874 | } |
875 | ||
876 | static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len) | |
877 | { | |
546dfd9f | 878 | struct vhdr_sha256 *vh = hdr_priv(hdr); |
25dfa848 | 879 | struct fio_sha256_ctx sha256_ctx = { |
546dfd9f | 880 | .buf = vh->sha256, |
cd14cc10 JA |
881 | }; |
882 | ||
25dfa848 JA |
883 | fio_sha256_init(&sha256_ctx); |
884 | fio_sha256_update(&sha256_ctx, p, len); | |
cd14cc10 JA |
885 | } |
886 | ||
7c353ceb JA |
887 | static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len) |
888 | { | |
889 | struct vhdr_sha1 *vh = hdr_priv(hdr); | |
25dfa848 | 890 | struct fio_sha1_ctx sha1_ctx = { |
7c353ceb JA |
891 | .H = vh->sha1, |
892 | }; | |
893 | ||
25dfa848 JA |
894 | fio_sha1_init(&sha1_ctx); |
895 | fio_sha1_update(&sha1_ctx, p, len); | |
7c353ceb JA |
896 | } |
897 | ||
1e154bdb JA |
898 | static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len) |
899 | { | |
546dfd9f JA |
900 | struct vhdr_crc7 *vh = hdr_priv(hdr); |
901 | ||
25dfa848 | 902 | vh->crc7 = fio_crc7(p, len); |
1e154bdb JA |
903 | } |
904 | ||
969f7ed3 JA |
905 | static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len) |
906 | { | |
546dfd9f JA |
907 | struct vhdr_crc16 *vh = hdr_priv(hdr); |
908 | ||
25dfa848 | 909 | vh->crc16 = fio_crc16(p, len); |
969f7ed3 JA |
910 | } |
911 | ||
e29d1b70 JA |
912 | static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len) |
913 | { | |
546dfd9f JA |
914 | struct vhdr_crc32 *vh = hdr_priv(hdr); |
915 | ||
25dfa848 | 916 | vh->crc32 = fio_crc32(p, len); |
e29d1b70 JA |
917 | } |
918 | ||
bac39e0e JA |
919 | static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len) |
920 | { | |
921 | struct vhdr_crc32 *vh = hdr_priv(hdr); | |
922 | ||
25dfa848 | 923 | vh->crc32 = fio_crc32c(p, len); |
bac39e0e JA |
924 | } |
925 | ||
d77a7af3 JA |
926 | static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len) |
927 | { | |
546dfd9f JA |
928 | struct vhdr_crc64 *vh = hdr_priv(hdr); |
929 | ||
25dfa848 | 930 | vh->crc64 = fio_crc64(p, len); |
d77a7af3 JA |
931 | } |
932 | ||
e29d1b70 JA |
933 | static void fill_md5(struct verify_header *hdr, void *p, unsigned int len) |
934 | { | |
546dfd9f | 935 | struct vhdr_md5 *vh = hdr_priv(hdr); |
25dfa848 | 936 | struct fio_md5_ctx md5_ctx = { |
546dfd9f | 937 | .hash = (uint32_t *) vh->md5_digest, |
8c432325 | 938 | }; |
e29d1b70 | 939 | |
25dfa848 JA |
940 | fio_md5_init(&md5_ctx); |
941 | fio_md5_update(&md5_ctx, p, len); | |
e29d1b70 JA |
942 | } |
943 | ||
7d9fb455 JA |
944 | static void populate_hdr(struct thread_data *td, struct io_u *io_u, |
945 | struct verify_header *hdr, unsigned int header_num, | |
946 | unsigned int header_len) | |
947 | { | |
948 | unsigned int data_len; | |
949 | void *data, *p; | |
950 | ||
951 | p = (void *) hdr; | |
952 | ||
d3a173a9 | 953 | hdr->magic = FIO_HDR_MAGIC; |
7d9fb455 | 954 | hdr->verify_type = td->o.verify; |
d3a173a9 | 955 | hdr->len = header_len; |
7d9fb455 | 956 | hdr->rand_seed = io_u->rand_seed; |
25dfa848 | 957 | hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32)); |
f65d1c26 | 958 | |
7d9fb455 JA |
959 | data_len = header_len - hdr_size(hdr); |
960 | ||
961 | data = p + hdr_size(hdr); | |
962 | switch (td->o.verify) { | |
963 | case VERIFY_MD5: | |
964 | dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n", | |
965 | io_u, hdr->len); | |
966 | fill_md5(hdr, data, data_len); | |
967 | break; | |
968 | case VERIFY_CRC64: | |
969 | dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n", | |
970 | io_u, hdr->len); | |
971 | fill_crc64(hdr, data, data_len); | |
972 | break; | |
973 | case VERIFY_CRC32C: | |
974 | case VERIFY_CRC32C_INTEL: | |
975 | dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n", | |
976 | io_u, hdr->len); | |
977 | fill_crc32c(hdr, data, data_len); | |
978 | break; | |
979 | case VERIFY_CRC32: | |
980 | dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n", | |
981 | io_u, hdr->len); | |
982 | fill_crc32(hdr, data, data_len); | |
983 | break; | |
984 | case VERIFY_CRC16: | |
985 | dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n", | |
986 | io_u, hdr->len); | |
987 | fill_crc16(hdr, data, data_len); | |
988 | break; | |
989 | case VERIFY_CRC7: | |
990 | dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n", | |
991 | io_u, hdr->len); | |
992 | fill_crc7(hdr, data, data_len); | |
993 | break; | |
994 | case VERIFY_SHA256: | |
995 | dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n", | |
996 | io_u, hdr->len); | |
997 | fill_sha256(hdr, data, data_len); | |
998 | break; | |
999 | case VERIFY_SHA512: | |
1000 | dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n", | |
1001 | io_u, hdr->len); | |
1002 | fill_sha512(hdr, data, data_len); | |
1003 | break; | |
844ea602 JA |
1004 | case VERIFY_XXHASH: |
1005 | dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n", | |
1006 | io_u, hdr->len); | |
1007 | fill_xxhash(hdr, data, data_len); | |
1008 | break; | |
7d9fb455 JA |
1009 | case VERIFY_META: |
1010 | dprint(FD_VERIFY, "fill meta io_u %p, len %u\n", | |
1011 | io_u, hdr->len); | |
1012 | fill_meta(hdr, td, io_u, header_num); | |
1013 | break; | |
1014 | case VERIFY_SHA1: | |
1015 | dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n", | |
1016 | io_u, hdr->len); | |
1017 | fill_sha1(hdr, data, data_len); | |
1018 | break; | |
92bf48d5 JA |
1019 | case VERIFY_PATTERN: |
1020 | /* nothing to do here */ | |
1021 | break; | |
7d9fb455 JA |
1022 | default: |
1023 | log_err("fio: bad verify type: %d\n", td->o.verify); | |
1024 | assert(0); | |
1025 | } | |
1026 | if (td->o.verify_offset) | |
1027 | memswp(p, p + td->o.verify_offset, hdr_size(hdr)); | |
1028 | } | |
1029 | ||
e29d1b70 JA |
1030 | /* |
1031 | * fill body of io_u->buf with random data and add a header with the | |
c50ca7bd | 1032 | * checksum of choice |
e29d1b70 JA |
1033 | */ |
1034 | void populate_verify_io_u(struct thread_data *td, struct io_u *io_u) | |
1035 | { | |
9cc3d150 JA |
1036 | if (td->o.verify == VERIFY_NULL) |
1037 | return; | |
1038 | ||
da0a7bd2 JC |
1039 | io_u->numberio = td->io_issues[io_u->ddir]; |
1040 | ||
c50ca7bd | 1041 | fill_pattern_headers(td, io_u, 0, 0); |
e29d1b70 JA |
1042 | } |
1043 | ||
1044 | int get_next_verify(struct thread_data *td, struct io_u *io_u) | |
1045 | { | |
8de8f047 | 1046 | struct io_piece *ipo = NULL; |
e29d1b70 | 1047 | |
d2d7fa53 JA |
1048 | /* |
1049 | * this io_u is from a requeue, we already filled the offsets | |
1050 | */ | |
1051 | if (io_u->file) | |
1052 | return 0; | |
1053 | ||
8de8f047 JA |
1054 | if (!RB_EMPTY_ROOT(&td->io_hist_tree)) { |
1055 | struct rb_node *n = rb_first(&td->io_hist_tree); | |
e29d1b70 | 1056 | |
8de8f047 | 1057 | ipo = rb_entry(n, struct io_piece, rb_node); |
f9401285 JA |
1058 | |
1059 | /* | |
1060 | * Ensure that the associated IO has completed | |
1061 | */ | |
1062 | read_barrier(); | |
1063 | if (ipo->flags & IP_F_IN_FLIGHT) | |
1064 | goto nothing; | |
1065 | ||
4b87898e | 1066 | rb_erase(n, &td->io_hist_tree); |
a917a8b3 JA |
1067 | assert(ipo->flags & IP_F_ONRB); |
1068 | ipo->flags &= ~IP_F_ONRB; | |
01743ee1 | 1069 | } else if (!flist_empty(&td->io_hist_list)) { |
9342d5f8 | 1070 | ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list); |
f9401285 JA |
1071 | |
1072 | /* | |
1073 | * Ensure that the associated IO has completed | |
1074 | */ | |
1075 | read_barrier(); | |
1076 | if (ipo->flags & IP_F_IN_FLIGHT) | |
1077 | goto nothing; | |
1078 | ||
01743ee1 | 1079 | flist_del(&ipo->list); |
a917a8b3 JA |
1080 | assert(ipo->flags & IP_F_ONLIST); |
1081 | ipo->flags &= ~IP_F_ONLIST; | |
8de8f047 | 1082 | } |
e29d1b70 | 1083 | |
8de8f047 | 1084 | if (ipo) { |
0d29de83 JA |
1085 | td->io_hist_len--; |
1086 | ||
e29d1b70 JA |
1087 | io_u->offset = ipo->offset; |
1088 | io_u->buflen = ipo->len; | |
da0a7bd2 | 1089 | io_u->numberio = ipo->numberio; |
36167d82 | 1090 | io_u->file = ipo->file; |
82af2a7c | 1091 | io_u->flags |= IO_U_F_VER_LIST; |
97af62ce | 1092 | |
0d29de83 JA |
1093 | if (ipo->flags & IP_F_TRIMMED) |
1094 | io_u->flags |= IO_U_F_TRIMMED; | |
1095 | ||
d6aed795 | 1096 | if (!fio_file_open(io_u->file)) { |
97af62ce JA |
1097 | int r = td_io_open_file(td, io_u->file); |
1098 | ||
bd6f78b2 JA |
1099 | if (r) { |
1100 | dprint(FD_VERIFY, "failed file %s open\n", | |
1101 | io_u->file->file_name); | |
97af62ce | 1102 | return 1; |
bd6f78b2 | 1103 | } |
97af62ce JA |
1104 | } |
1105 | ||
1106 | get_file(ipo->file); | |
d6aed795 | 1107 | assert(fio_file_open(io_u->file)); |
e29d1b70 | 1108 | io_u->ddir = DDIR_READ; |
36167d82 JA |
1109 | io_u->xfer_buf = io_u->buf; |
1110 | io_u->xfer_buflen = io_u->buflen; | |
0d29de83 JA |
1111 | |
1112 | remove_trim_entry(td, ipo); | |
e29d1b70 | 1113 | free(ipo); |
bd6f78b2 | 1114 | dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u); |
c4b6117b PV |
1115 | |
1116 | if (!td->o.verify_pattern_bytes) { | |
d6b72507 | 1117 | io_u->rand_seed = __rand(&td->verify_state); |
c4b6117b | 1118 | if (sizeof(int) != sizeof(long *)) |
d6b72507 | 1119 | io_u->rand_seed *= __rand(&td->verify_state); |
c4b6117b | 1120 | } |
e29d1b70 JA |
1121 | return 0; |
1122 | } | |
1123 | ||
f9401285 | 1124 | nothing: |
bd6f78b2 | 1125 | dprint(FD_VERIFY, "get_next_verify: empty\n"); |
e29d1b70 JA |
1126 | return 1; |
1127 | } | |
e8462bd8 | 1128 | |
dc5bfbb2 JA |
1129 | void fio_verify_init(struct thread_data *td) |
1130 | { | |
1131 | if (td->o.verify == VERIFY_CRC32C_INTEL || | |
1132 | td->o.verify == VERIFY_CRC32C) { | |
1133 | crc32c_intel_probe(); | |
1134 | } | |
1135 | } | |
1136 | ||
e8462bd8 JA |
1137 | static void *verify_async_thread(void *data) |
1138 | { | |
1139 | struct thread_data *td = data; | |
1140 | struct io_u *io_u; | |
1141 | int ret = 0; | |
1142 | ||
1143 | if (td->o.verify_cpumask_set && | |
1144 | fio_setaffinity(td->pid, td->o.verify_cpumask)) { | |
1145 | log_err("fio: failed setting verify thread affinity\n"); | |
1146 | goto done; | |
1147 | } | |
1148 | ||
1149 | do { | |
e53ab27c JA |
1150 | FLIST_HEAD(list); |
1151 | ||
e8462bd8 JA |
1152 | read_barrier(); |
1153 | if (td->verify_thread_exit) | |
1154 | break; | |
1155 | ||
1156 | pthread_mutex_lock(&td->io_u_lock); | |
1157 | ||
1158 | while (flist_empty(&td->verify_list) && | |
1159 | !td->verify_thread_exit) { | |
b36e298b JA |
1160 | ret = pthread_cond_wait(&td->verify_cond, |
1161 | &td->io_u_lock); | |
e8462bd8 JA |
1162 | if (ret) { |
1163 | pthread_mutex_unlock(&td->io_u_lock); | |
1164 | break; | |
1165 | } | |
1166 | } | |
1167 | ||
e53ab27c JA |
1168 | flist_splice_init(&td->verify_list, &list); |
1169 | pthread_mutex_unlock(&td->io_u_lock); | |
1170 | ||
1171 | if (flist_empty(&list)) | |
e8462bd8 | 1172 | continue; |
e8462bd8 | 1173 | |
e53ab27c | 1174 | while (!flist_empty(&list)) { |
9342d5f8 | 1175 | io_u = flist_first_entry(&list, struct io_u, verify_list); |
f8b0bd10 JA |
1176 | flist_del_init(&io_u->verify_list); |
1177 | ||
1178 | io_u->flags |= IO_U_F_NO_FILE_PUT; | |
1179 | ret = verify_io_u(td, &io_u); | |
e8462bd8 | 1180 | |
e53ab27c | 1181 | put_io_u(td, io_u); |
d561f2ab JA |
1182 | if (!ret) |
1183 | continue; | |
8b28bd41 | 1184 | if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) { |
d561f2ab JA |
1185 | update_error_count(td, ret); |
1186 | td_clear_error(td); | |
1187 | ret = 0; | |
1188 | } | |
e53ab27c | 1189 | } |
e8462bd8 JA |
1190 | } while (!ret); |
1191 | ||
d561f2ab JA |
1192 | if (ret) { |
1193 | td_verror(td, ret, "async_verify"); | |
f3e6cb95 | 1194 | if (td->o.verify_fatal) |
ebea2133 | 1195 | fio_mark_td_terminate(td); |
d561f2ab JA |
1196 | } |
1197 | ||
e8462bd8 JA |
1198 | done: |
1199 | pthread_mutex_lock(&td->io_u_lock); | |
1200 | td->nr_verify_threads--; | |
1201 | pthread_mutex_unlock(&td->io_u_lock); | |
1202 | ||
1203 | pthread_cond_signal(&td->free_cond); | |
1204 | return NULL; | |
1205 | } | |
1206 | ||
1207 | int verify_async_init(struct thread_data *td) | |
1208 | { | |
1209 | int i, ret; | |
304a47c7 VA |
1210 | pthread_attr_t attr; |
1211 | ||
1212 | pthread_attr_init(&attr); | |
1213 | pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN); | |
e8462bd8 JA |
1214 | |
1215 | td->verify_thread_exit = 0; | |
1216 | ||
1217 | td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async); | |
1218 | for (i = 0; i < td->o.verify_async; i++) { | |
304a47c7 | 1219 | ret = pthread_create(&td->verify_threads[i], &attr, |
e8462bd8 JA |
1220 | verify_async_thread, td); |
1221 | if (ret) { | |
1222 | log_err("fio: async verify creation failed: %s\n", | |
1223 | strerror(ret)); | |
1224 | break; | |
1225 | } | |
1226 | ret = pthread_detach(td->verify_threads[i]); | |
1227 | if (ret) { | |
1228 | log_err("fio: async verify thread detach failed: %s\n", | |
1229 | strerror(ret)); | |
1230 | break; | |
1231 | } | |
1232 | td->nr_verify_threads++; | |
1233 | } | |
1234 | ||
304a47c7 VA |
1235 | pthread_attr_destroy(&attr); |
1236 | ||
e8462bd8 | 1237 | if (i != td->o.verify_async) { |
e40823b1 | 1238 | log_err("fio: only %d verify threads started, exiting\n", i); |
e8462bd8 JA |
1239 | td->verify_thread_exit = 1; |
1240 | write_barrier(); | |
1241 | pthread_cond_broadcast(&td->verify_cond); | |
1242 | return 1; | |
1243 | } | |
1244 | ||
1245 | return 0; | |
1246 | } | |
1247 | ||
1248 | void verify_async_exit(struct thread_data *td) | |
1249 | { | |
1250 | td->verify_thread_exit = 1; | |
1251 | write_barrier(); | |
1252 | pthread_cond_broadcast(&td->verify_cond); | |
1253 | ||
1254 | pthread_mutex_lock(&td->io_u_lock); | |
1255 | ||
1256 | while (td->nr_verify_threads) | |
1257 | pthread_cond_wait(&td->free_cond, &td->io_u_lock); | |
1258 | ||
1259 | pthread_mutex_unlock(&td->io_u_lock); | |
1260 | free(td->verify_threads); | |
1261 | td->verify_threads = NULL; | |
1262 | } | |
ca09be4b JA |
1263 | |
1264 | struct all_io_list *get_all_io_list(int save_mask, size_t *sz) | |
1265 | { | |
1266 | struct all_io_list *rep; | |
1267 | struct thread_data *td; | |
1268 | size_t depth; | |
1269 | void *next; | |
1270 | int i, nr; | |
1271 | ||
1272 | compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list"); | |
1273 | ||
1274 | /* | |
1275 | * Calculate reply space needed. We need one 'io_state' per thread, | |
1276 | * and the size will vary depending on depth. | |
1277 | */ | |
1278 | depth = 0; | |
1279 | nr = 0; | |
1280 | for_each_td(td, i) { | |
1281 | if (save_mask != IO_LIST_ALL && (i + 1) != save_mask) | |
1282 | continue; | |
1283 | td->stop_io = 1; | |
1284 | td->flags |= TD_F_VSTATE_SAVED; | |
1285 | depth += td->o.iodepth; | |
1286 | nr++; | |
1287 | } | |
1288 | ||
1289 | if (!nr) | |
1290 | return NULL; | |
1291 | ||
1292 | *sz = sizeof(*rep); | |
1293 | *sz += nr * sizeof(struct thread_io_list); | |
1294 | *sz += depth * sizeof(uint64_t); | |
1295 | rep = malloc(*sz); | |
1296 | ||
1297 | rep->threads = cpu_to_le64((uint64_t) nr); | |
1298 | ||
1299 | next = &rep->state[0]; | |
1300 | for_each_td(td, i) { | |
1301 | struct thread_io_list *s = next; | |
1302 | unsigned int comps; | |
1303 | ||
1304 | if (save_mask != IO_LIST_ALL && (i + 1) != save_mask) | |
1305 | continue; | |
1306 | ||
1307 | if (td->last_write_comp) { | |
1308 | int j, k; | |
1309 | ||
1310 | if (td->io_blocks[DDIR_WRITE] < td->o.iodepth) | |
1311 | comps = td->io_blocks[DDIR_WRITE]; | |
1312 | else | |
1313 | comps = td->o.iodepth; | |
1314 | ||
1315 | k = td->last_write_idx - 1; | |
1316 | for (j = 0; j < comps; j++) { | |
1317 | if (k == -1) | |
1318 | k = td->o.iodepth - 1; | |
1319 | s->offsets[j] = cpu_to_le64(td->last_write_comp[k]); | |
1320 | k--; | |
1321 | } | |
1322 | } else | |
1323 | comps = 0; | |
1324 | ||
1325 | s->no_comps = cpu_to_le64((uint64_t) comps); | |
1326 | s->depth = cpu_to_le64((uint64_t) td->o.iodepth); | |
1327 | s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]); | |
1328 | s->index = cpu_to_le64((uint64_t) i); | |
1329 | s->rand.s[0] = cpu_to_le32(td->random_state.s1); | |
1330 | s->rand.s[1] = cpu_to_le32(td->random_state.s2); | |
1331 | s->rand.s[2] = cpu_to_le32(td->random_state.s3); | |
1332 | s->rand.s[3] = 0; | |
1333 | strncpy((char *) s->name, td->o.name, sizeof(s->name)); | |
1334 | next = io_list_next(s); | |
1335 | } | |
1336 | ||
1337 | return rep; | |
1338 | } | |
1339 | ||
1340 | static int open_state_file(const char *name, const char *prefix, int num, | |
1341 | int for_write) | |
1342 | { | |
1343 | char out[64]; | |
1344 | int flags; | |
1345 | int fd; | |
1346 | ||
1347 | if (for_write) | |
1348 | flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC; | |
1349 | else | |
1350 | flags = O_RDONLY; | |
1351 | ||
e499aedc | 1352 | verify_state_gen_name(out, sizeof(out), name, prefix, num); |
ca09be4b JA |
1353 | |
1354 | fd = open(out, flags, 0644); | |
1355 | if (fd == -1) { | |
1356 | perror("fio: open state file"); | |
1357 | return -1; | |
1358 | } | |
1359 | ||
1360 | return fd; | |
1361 | } | |
1362 | ||
1363 | static int write_thread_list_state(struct thread_io_list *s, | |
1364 | const char *prefix) | |
1365 | { | |
1366 | struct verify_state_hdr hdr; | |
1367 | uint64_t crc; | |
1368 | ssize_t ret; | |
1369 | int fd; | |
1370 | ||
1371 | fd = open_state_file((const char *) s->name, prefix, s->index, 1); | |
1372 | if (fd == -1) | |
1373 | return 1; | |
1374 | ||
1375 | crc = fio_crc32c((void *)s, thread_io_list_sz(s)); | |
1376 | ||
1377 | hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION); | |
1378 | hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s)); | |
1379 | hdr.crc = cpu_to_le64(crc); | |
1380 | ret = write(fd, &hdr, sizeof(hdr)); | |
1381 | if (ret != sizeof(hdr)) | |
1382 | goto write_fail; | |
1383 | ||
1384 | ret = write(fd, s, thread_io_list_sz(s)); | |
1385 | if (ret != thread_io_list_sz(s)) { | |
1386 | write_fail: | |
1387 | if (ret < 0) | |
1388 | perror("fio: write state file"); | |
1389 | log_err("fio: failed to write state file\n"); | |
1390 | ret = 1; | |
1391 | } else | |
1392 | ret = 0; | |
1393 | ||
1394 | close(fd); | |
1395 | return ret; | |
1396 | } | |
1397 | ||
1398 | void __verify_save_state(struct all_io_list *state, const char *prefix) | |
1399 | { | |
1400 | struct thread_io_list *s = &state->state[0]; | |
1401 | unsigned int i; | |
1402 | ||
1403 | for (i = 0; i < le64_to_cpu(state->threads); i++) { | |
1404 | write_thread_list_state(s, prefix); | |
1405 | s = io_list_next(s); | |
1406 | } | |
1407 | } | |
1408 | ||
1409 | void verify_save_state(void) | |
1410 | { | |
1411 | struct all_io_list *state; | |
1412 | size_t sz; | |
1413 | ||
1414 | state = get_all_io_list(IO_LIST_ALL, &sz); | |
1415 | if (state) { | |
1416 | __verify_save_state(state, "local"); | |
1417 | free(state); | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | void verify_free_state(struct thread_data *td) | |
1422 | { | |
1423 | if (td->vstate) | |
1424 | free(td->vstate); | |
1425 | } | |
1426 | ||
1427 | void verify_convert_assign_state(struct thread_data *td, | |
1428 | struct thread_io_list *s) | |
1429 | { | |
1430 | int i; | |
1431 | ||
1432 | s->no_comps = le64_to_cpu(s->no_comps); | |
1433 | s->depth = le64_to_cpu(s->depth); | |
1434 | s->numberio = le64_to_cpu(s->numberio); | |
1435 | for (i = 0; i < 4; i++) | |
1436 | s->rand.s[i] = le32_to_cpu(s->rand.s[i]); | |
1437 | for (i = 0; i < s->no_comps; i++) | |
1438 | s->offsets[i] = le64_to_cpu(s->offsets[i]); | |
1439 | ||
1440 | td->vstate = s; | |
1441 | } | |
1442 | ||
1443 | int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s) | |
1444 | { | |
1445 | uint64_t crc; | |
1446 | ||
1447 | hdr->version = le64_to_cpu(hdr->version); | |
1448 | hdr->size = le64_to_cpu(hdr->size); | |
1449 | hdr->crc = le64_to_cpu(hdr->crc); | |
1450 | ||
1451 | if (hdr->version != VSTATE_HDR_VERSION) | |
1452 | return 1; | |
1453 | ||
1454 | crc = fio_crc32c((void *)s, hdr->size); | |
1455 | if (crc != hdr->crc) | |
1456 | return 1; | |
1457 | ||
1458 | return 0; | |
1459 | } | |
1460 | ||
1461 | int verify_load_state(struct thread_data *td, const char *prefix) | |
1462 | { | |
1463 | struct thread_io_list *s = NULL; | |
1464 | struct verify_state_hdr hdr; | |
1465 | uint64_t crc; | |
1466 | ssize_t ret; | |
1467 | int fd; | |
1468 | ||
1469 | if (!td->o.verify_state) | |
1470 | return 0; | |
1471 | ||
1472 | fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0); | |
1473 | if (fd == -1) | |
1474 | return 1; | |
1475 | ||
1476 | ret = read(fd, &hdr, sizeof(hdr)); | |
1477 | if (ret != sizeof(hdr)) { | |
1478 | if (ret < 0) | |
1479 | td_verror(td, errno, "read verify state hdr"); | |
1480 | log_err("fio: failed reading verify state header\n"); | |
1481 | goto err; | |
1482 | } | |
1483 | ||
1484 | hdr.version = le64_to_cpu(hdr.version); | |
1485 | hdr.size = le64_to_cpu(hdr.size); | |
1486 | hdr.crc = le64_to_cpu(hdr.crc); | |
1487 | ||
1488 | if (hdr.version != VSTATE_HDR_VERSION) { | |
1489 | log_err("fio: bad version in verify state header\n"); | |
1490 | goto err; | |
1491 | } | |
1492 | ||
1493 | s = malloc(hdr.size); | |
1494 | ret = read(fd, s, hdr.size); | |
1495 | if (ret != hdr.size) { | |
1496 | if (ret < 0) | |
1497 | td_verror(td, errno, "read verify state"); | |
1498 | log_err("fio: failed reading verity state\n"); | |
1499 | goto err; | |
1500 | } | |
1501 | ||
1502 | crc = fio_crc32c((void *)s, hdr.size); | |
1503 | if (crc != hdr.crc) { | |
1504 | log_err("fio: verify state is corrupt\n"); | |
1505 | goto err; | |
1506 | } | |
1507 | ||
1508 | close(fd); | |
1509 | ||
1510 | verify_convert_assign_state(td, s); | |
1511 | return 0; | |
1512 | err: | |
1513 | if (s) | |
1514 | free(s); | |
1515 | close(fd); | |
1516 | return 1; | |
1517 | } | |
1518 | ||
1519 | /* | |
1520 | * Use the loaded verify state to know when to stop doing verification | |
1521 | */ | |
1522 | int verify_state_should_stop(struct thread_data *td, struct io_u *io_u) | |
1523 | { | |
1524 | struct thread_io_list *s = td->vstate; | |
1525 | int i; | |
1526 | ||
1527 | if (!s) | |
1528 | return 0; | |
1529 | ||
1530 | /* | |
1531 | * If we're not into the window of issues - depth yet, continue | |
1532 | */ | |
1533 | if (td->io_blocks[DDIR_READ] < s->depth || | |
1534 | s->numberio - td->io_blocks[DDIR_READ] > s->depth) | |
1535 | return 0; | |
1536 | ||
1537 | /* | |
1538 | * We're in the window of having to check if this io was | |
1539 | * completed or not. If the IO was seen as completed, then | |
1540 | * lets verify it. | |
1541 | */ | |
1542 | for (i = 0; i < s->no_comps; i++) | |
1543 | if (io_u->offset == s->offsets[i]) | |
1544 | return 0; | |
1545 | ||
1546 | /* | |
1547 | * Not found, we have to stop | |
1548 | */ | |
1549 | return 1; | |
1550 | } |