Commit | Line | Data |
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bfbdd35b BVA |
1 | /* |
2 | * Copyright (C) 2018 Western Digital Corporation or its affiliates. | |
3 | * | |
4 | * This file is released under the GPL. | |
5 | */ | |
6 | ||
7 | #include <errno.h> | |
8 | #include <string.h> | |
9 | #include <stdlib.h> | |
10 | #include <dirent.h> | |
11 | #include <fcntl.h> | |
12 | #include <sys/ioctl.h> | |
13 | #include <sys/stat.h> | |
14 | #include <unistd.h> | |
15 | #include <linux/blkzoned.h> | |
16 | #include "file.h" | |
17 | #include "fio.h" | |
18 | #include "lib/pow2.h" | |
19 | #include "log.h" | |
20 | #include "smalloc.h" | |
21 | #include "verify.h" | |
22 | #include "zbd.h" | |
23 | ||
24 | /** | |
25 | * zbd_zone_idx - convert an offset into a zone number | |
26 | * @f: file pointer. | |
27 | * @offset: offset in bytes. If this offset is in the first zone_size bytes | |
28 | * past the disk size then the index of the sentinel is returned. | |
29 | */ | |
30 | static uint32_t zbd_zone_idx(const struct fio_file *f, uint64_t offset) | |
31 | { | |
32 | uint32_t zone_idx; | |
33 | ||
cd775e06 | 34 | if (f->zbd_info->zone_size_log2 > 0) |
bfbdd35b BVA |
35 | zone_idx = offset >> f->zbd_info->zone_size_log2; |
36 | else | |
ee3696bd | 37 | zone_idx = offset / f->zbd_info->zone_size; |
bfbdd35b BVA |
38 | |
39 | return min(zone_idx, f->zbd_info->nr_zones); | |
40 | } | |
41 | ||
42 | /** | |
43 | * zbd_zone_full - verify whether a minimum number of bytes remain in a zone | |
44 | * @f: file pointer. | |
45 | * @z: zone info pointer. | |
46 | * @required: minimum number of bytes that must remain in a zone. | |
47 | * | |
48 | * The caller must hold z->mutex. | |
49 | */ | |
50 | static bool zbd_zone_full(const struct fio_file *f, struct fio_zone_info *z, | |
51 | uint64_t required) | |
52 | { | |
53 | assert((required & 511) == 0); | |
54 | ||
55 | return z->type == BLK_ZONE_TYPE_SEQWRITE_REQ && | |
ee3696bd | 56 | z->wp + required > z->start + f->zbd_info->zone_size; |
bfbdd35b BVA |
57 | } |
58 | ||
59 | static bool is_valid_offset(const struct fio_file *f, uint64_t offset) | |
60 | { | |
61 | return (uint64_t)(offset - f->file_offset) < f->io_size; | |
62 | } | |
63 | ||
64 | /* Verify whether direct I/O is used for all host-managed zoned drives. */ | |
65 | static bool zbd_using_direct_io(void) | |
66 | { | |
67 | struct thread_data *td; | |
68 | struct fio_file *f; | |
69 | int i, j; | |
70 | ||
71 | for_each_td(td, i) { | |
72 | if (td->o.odirect || !(td->o.td_ddir & TD_DDIR_WRITE)) | |
73 | continue; | |
74 | for_each_file(td, f, j) { | |
75 | if (f->zbd_info && | |
76 | f->zbd_info->model == ZBD_DM_HOST_MANAGED) | |
77 | return false; | |
78 | } | |
79 | } | |
80 | ||
81 | return true; | |
82 | } | |
83 | ||
84 | /* Whether or not the I/O range for f includes one or more sequential zones */ | |
85 | static bool zbd_is_seq_job(struct fio_file *f) | |
86 | { | |
87 | uint32_t zone_idx, zone_idx_b, zone_idx_e; | |
88 | ||
89 | assert(f->zbd_info); | |
90 | if (f->io_size == 0) | |
91 | return false; | |
92 | zone_idx_b = zbd_zone_idx(f, f->file_offset); | |
93 | zone_idx_e = zbd_zone_idx(f, f->file_offset + f->io_size - 1); | |
94 | for (zone_idx = zone_idx_b; zone_idx <= zone_idx_e; zone_idx++) | |
95 | if (f->zbd_info->zone_info[zone_idx].type == | |
96 | BLK_ZONE_TYPE_SEQWRITE_REQ) | |
97 | return true; | |
98 | ||
99 | return false; | |
100 | } | |
101 | ||
102 | /* | |
103 | * Verify whether offset and size parameters are aligned with zone boundaries. | |
104 | */ | |
105 | static bool zbd_verify_sizes(void) | |
106 | { | |
107 | const struct fio_zone_info *z; | |
108 | struct thread_data *td; | |
109 | struct fio_file *f; | |
110 | uint64_t new_offset, new_end; | |
111 | uint32_t zone_idx; | |
112 | int i, j; | |
113 | ||
114 | for_each_td(td, i) { | |
115 | for_each_file(td, f, j) { | |
116 | if (!f->zbd_info) | |
117 | continue; | |
118 | if (f->file_offset >= f->real_file_size) | |
119 | continue; | |
120 | if (!zbd_is_seq_job(f)) | |
121 | continue; | |
122 | zone_idx = zbd_zone_idx(f, f->file_offset); | |
123 | z = &f->zbd_info->zone_info[zone_idx]; | |
ee3696bd DLM |
124 | if (f->file_offset != z->start) { |
125 | new_offset = (z+1)->start; | |
bfbdd35b BVA |
126 | if (new_offset >= f->file_offset + f->io_size) { |
127 | log_info("%s: io_size must be at least one zone\n", | |
128 | f->file_name); | |
129 | return false; | |
130 | } | |
a0c84dd4 JA |
131 | log_info("%s: rounded up offset from %llu to %llu\n", |
132 | f->file_name, (unsigned long long) f->file_offset, | |
133 | (unsigned long long) new_offset); | |
bfbdd35b BVA |
134 | f->io_size -= (new_offset - f->file_offset); |
135 | f->file_offset = new_offset; | |
136 | } | |
137 | zone_idx = zbd_zone_idx(f, f->file_offset + f->io_size); | |
138 | z = &f->zbd_info->zone_info[zone_idx]; | |
ee3696bd | 139 | new_end = z->start; |
bfbdd35b BVA |
140 | if (f->file_offset + f->io_size != new_end) { |
141 | if (new_end <= f->file_offset) { | |
142 | log_info("%s: io_size must be at least one zone\n", | |
143 | f->file_name); | |
144 | return false; | |
145 | } | |
a0c84dd4 JA |
146 | log_info("%s: rounded down io_size from %llu to %llu\n", |
147 | f->file_name, (unsigned long long) f->io_size, | |
148 | (unsigned long long) new_end - f->file_offset); | |
bfbdd35b BVA |
149 | f->io_size = new_end - f->file_offset; |
150 | } | |
151 | } | |
152 | } | |
153 | ||
154 | return true; | |
155 | } | |
156 | ||
157 | static bool zbd_verify_bs(void) | |
158 | { | |
159 | struct thread_data *td; | |
160 | struct fio_file *f; | |
161 | uint32_t zone_size; | |
162 | int i, j, k; | |
163 | ||
164 | for_each_td(td, i) { | |
165 | for_each_file(td, f, j) { | |
166 | if (!f->zbd_info) | |
167 | continue; | |
168 | zone_size = f->zbd_info->zone_size; | |
169 | for (k = 0; k < ARRAY_SIZE(td->o.bs); k++) { | |
170 | if (td->o.verify != VERIFY_NONE && | |
ee3696bd | 171 | zone_size % td->o.bs[k] != 0) { |
bfbdd35b BVA |
172 | log_info("%s: block size %llu is not a divisor of the zone size %d\n", |
173 | f->file_name, td->o.bs[k], | |
ee3696bd | 174 | zone_size); |
bfbdd35b BVA |
175 | return false; |
176 | } | |
177 | } | |
178 | } | |
179 | } | |
180 | return true; | |
181 | } | |
182 | ||
183 | /* | |
184 | * Read zone information into @buf starting from sector @start_sector. | |
185 | * @fd is a file descriptor that refers to a block device and @bufsz is the | |
186 | * size of @buf. | |
187 | * | |
188 | * Returns 0 upon success and a negative error code upon failure. | |
7f125e7f DLM |
189 | * If the zone report is empty, always assume an error (device problem) and |
190 | * return -EIO. | |
bfbdd35b BVA |
191 | */ |
192 | static int read_zone_info(int fd, uint64_t start_sector, | |
193 | void *buf, unsigned int bufsz) | |
194 | { | |
195 | struct blk_zone_report *hdr = buf; | |
7f125e7f | 196 | int ret; |
bfbdd35b BVA |
197 | |
198 | if (bufsz < sizeof(*hdr)) | |
199 | return -EINVAL; | |
200 | ||
201 | memset(hdr, 0, sizeof(*hdr)); | |
202 | ||
203 | hdr->nr_zones = (bufsz - sizeof(*hdr)) / sizeof(struct blk_zone); | |
204 | hdr->sector = start_sector; | |
7f125e7f DLM |
205 | ret = ioctl(fd, BLKREPORTZONE, hdr); |
206 | if (ret) | |
207 | return -errno; | |
208 | if (!hdr->nr_zones) | |
209 | return -EIO; | |
210 | return 0; | |
bfbdd35b BVA |
211 | } |
212 | ||
213 | /* | |
214 | * Read up to 255 characters from the first line of a file. Strip the trailing | |
215 | * newline. | |
216 | */ | |
217 | static char *read_file(const char *path) | |
218 | { | |
219 | char line[256], *p = line; | |
220 | FILE *f; | |
221 | ||
222 | f = fopen(path, "rb"); | |
223 | if (!f) | |
224 | return NULL; | |
225 | if (!fgets(line, sizeof(line), f)) | |
226 | line[0] = '\0'; | |
227 | strsep(&p, "\n"); | |
228 | fclose(f); | |
229 | ||
230 | return strdup(line); | |
231 | } | |
232 | ||
233 | static enum blk_zoned_model get_zbd_model(const char *file_name) | |
234 | { | |
235 | enum blk_zoned_model model = ZBD_DM_NONE; | |
236 | char *zoned_attr_path = NULL; | |
237 | char *model_str = NULL; | |
238 | struct stat statbuf; | |
63e3e40d SK |
239 | char *sys_devno_path = NULL; |
240 | char *part_attr_path = NULL; | |
241 | char *part_str = NULL; | |
242 | char sys_path[PATH_MAX]; | |
243 | ssize_t sz; | |
244 | char *delim = NULL; | |
bfbdd35b BVA |
245 | |
246 | if (stat(file_name, &statbuf) < 0) | |
247 | goto out; | |
63e3e40d SK |
248 | |
249 | if (asprintf(&sys_devno_path, "/sys/dev/block/%d:%d", | |
bfbdd35b BVA |
250 | major(statbuf.st_rdev), minor(statbuf.st_rdev)) < 0) |
251 | goto out; | |
63e3e40d SK |
252 | |
253 | sz = readlink(sys_devno_path, sys_path, sizeof(sys_path) - 1); | |
254 | if (sz < 0) | |
255 | goto out; | |
256 | sys_path[sz] = '\0'; | |
257 | ||
258 | /* | |
259 | * If the device is a partition device, cut the device name in the | |
260 | * canonical sysfs path to obtain the sysfs path of the holder device. | |
261 | * e.g.: /sys/devices/.../sda/sda1 -> /sys/devices/.../sda | |
262 | */ | |
263 | if (asprintf(&part_attr_path, "/sys/dev/block/%s/partition", | |
264 | sys_path) < 0) | |
265 | goto out; | |
266 | part_str = read_file(part_attr_path); | |
267 | if (part_str && *part_str == '1') { | |
268 | delim = strrchr(sys_path, '/'); | |
269 | if (!delim) | |
270 | goto out; | |
271 | *delim = '\0'; | |
272 | } | |
273 | ||
274 | if (asprintf(&zoned_attr_path, | |
275 | "/sys/dev/block/%s/queue/zoned", sys_path) < 0) | |
276 | goto out; | |
277 | ||
bfbdd35b BVA |
278 | model_str = read_file(zoned_attr_path); |
279 | if (!model_str) | |
280 | goto out; | |
281 | dprint(FD_ZBD, "%s: zbd model string: %s\n", file_name, model_str); | |
282 | if (strcmp(model_str, "host-aware") == 0) | |
283 | model = ZBD_DM_HOST_AWARE; | |
284 | else if (strcmp(model_str, "host-managed") == 0) | |
285 | model = ZBD_DM_HOST_MANAGED; | |
286 | ||
287 | out: | |
288 | free(model_str); | |
289 | free(zoned_attr_path); | |
63e3e40d SK |
290 | free(part_str); |
291 | free(part_attr_path); | |
292 | free(sys_devno_path); | |
bfbdd35b BVA |
293 | return model; |
294 | } | |
295 | ||
296 | static int ilog2(uint64_t i) | |
297 | { | |
298 | int log = -1; | |
299 | ||
300 | while (i) { | |
301 | i >>= 1; | |
302 | log++; | |
303 | } | |
304 | return log; | |
305 | } | |
306 | ||
307 | /* | |
308 | * Initialize f->zbd_info for devices that are not zoned block devices. This | |
309 | * allows to execute a ZBD workload against a non-ZBD device. | |
310 | */ | |
311 | static int init_zone_info(struct thread_data *td, struct fio_file *f) | |
312 | { | |
313 | uint32_t nr_zones; | |
314 | struct fio_zone_info *p; | |
315 | uint64_t zone_size; | |
316 | struct zoned_block_device_info *zbd_info = NULL; | |
317 | pthread_mutexattr_t attr; | |
318 | int i; | |
319 | ||
ee3696bd | 320 | zone_size = td->o.zone_size; |
bfbdd35b | 321 | assert(zone_size); |
ee3696bd | 322 | nr_zones = (f->real_file_size + zone_size - 1) / zone_size; |
bfbdd35b BVA |
323 | zbd_info = scalloc(1, sizeof(*zbd_info) + |
324 | (nr_zones + 1) * sizeof(zbd_info->zone_info[0])); | |
325 | if (!zbd_info) | |
326 | return -ENOMEM; | |
327 | ||
328 | pthread_mutexattr_init(&attr); | |
329 | pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | |
330 | pthread_mutexattr_setpshared(&attr, true); | |
331 | pthread_mutex_init(&zbd_info->mutex, &attr); | |
332 | zbd_info->refcount = 1; | |
333 | p = &zbd_info->zone_info[0]; | |
334 | for (i = 0; i < nr_zones; i++, p++) { | |
335 | pthread_mutex_init(&p->mutex, &attr); | |
336 | p->start = i * zone_size; | |
337 | p->wp = p->start + zone_size; | |
338 | p->type = BLK_ZONE_TYPE_SEQWRITE_REQ; | |
339 | p->cond = BLK_ZONE_COND_EMPTY; | |
340 | } | |
341 | /* a sentinel */ | |
342 | p->start = nr_zones * zone_size; | |
343 | ||
344 | f->zbd_info = zbd_info; | |
345 | f->zbd_info->zone_size = zone_size; | |
346 | f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ? | |
ee3696bd | 347 | ilog2(zone_size) : -1; |
bfbdd35b BVA |
348 | f->zbd_info->nr_zones = nr_zones; |
349 | pthread_mutexattr_destroy(&attr); | |
350 | return 0; | |
351 | } | |
352 | ||
353 | /* | |
354 | * Parse the BLKREPORTZONE output and store it in f->zbd_info. Must be called | |
355 | * only for devices that support this ioctl, namely zoned block devices. | |
356 | */ | |
357 | static int parse_zone_info(struct thread_data *td, struct fio_file *f) | |
358 | { | |
359 | const unsigned int bufsz = sizeof(struct blk_zone_report) + | |
360 | 4096 * sizeof(struct blk_zone); | |
361 | uint32_t nr_zones; | |
362 | struct blk_zone_report *hdr; | |
363 | const struct blk_zone *z; | |
364 | struct fio_zone_info *p; | |
365 | uint64_t zone_size, start_sector; | |
366 | struct zoned_block_device_info *zbd_info = NULL; | |
367 | pthread_mutexattr_t attr; | |
368 | void *buf; | |
369 | int fd, i, j, ret = 0; | |
370 | ||
371 | pthread_mutexattr_init(&attr); | |
372 | pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | |
373 | pthread_mutexattr_setpshared(&attr, true); | |
374 | ||
375 | buf = malloc(bufsz); | |
376 | if (!buf) | |
377 | goto out; | |
378 | ||
379 | fd = open(f->file_name, O_RDONLY | O_LARGEFILE); | |
380 | if (fd < 0) { | |
381 | ret = -errno; | |
382 | goto free; | |
383 | } | |
384 | ||
385 | ret = read_zone_info(fd, 0, buf, bufsz); | |
386 | if (ret < 0) { | |
387 | log_info("fio: BLKREPORTZONE(%lu) failed for %s (%d).\n", | |
388 | 0UL, f->file_name, -ret); | |
389 | goto close; | |
390 | } | |
391 | hdr = buf; | |
392 | if (hdr->nr_zones < 1) { | |
393 | log_info("fio: %s has invalid zone information.\n", | |
394 | f->file_name); | |
395 | goto close; | |
396 | } | |
397 | z = (void *)(hdr + 1); | |
ee3696bd DLM |
398 | zone_size = z->len << 9; |
399 | nr_zones = (f->real_file_size + zone_size - 1) / zone_size; | |
bfbdd35b BVA |
400 | |
401 | if (td->o.zone_size == 0) { | |
ee3696bd DLM |
402 | td->o.zone_size = zone_size; |
403 | } else if (td->o.zone_size != zone_size) { | |
a0c84dd4 JA |
404 | log_info("fio: %s job parameter zonesize %llu does not match disk zone size %llu.\n", |
405 | f->file_name, (unsigned long long) td->o.zone_size, | |
406 | (unsigned long long) zone_size); | |
bfbdd35b BVA |
407 | ret = -EINVAL; |
408 | goto close; | |
409 | } | |
410 | ||
a0c84dd4 JA |
411 | dprint(FD_ZBD, "Device %s has %d zones of size %llu KB\n", f->file_name, |
412 | nr_zones, (unsigned long long) zone_size / 1024); | |
bfbdd35b BVA |
413 | |
414 | zbd_info = scalloc(1, sizeof(*zbd_info) + | |
415 | (nr_zones + 1) * sizeof(zbd_info->zone_info[0])); | |
416 | ret = -ENOMEM; | |
417 | if (!zbd_info) | |
418 | goto close; | |
419 | pthread_mutex_init(&zbd_info->mutex, &attr); | |
420 | zbd_info->refcount = 1; | |
421 | p = &zbd_info->zone_info[0]; | |
422 | for (start_sector = 0, j = 0; j < nr_zones;) { | |
423 | z = (void *)(hdr + 1); | |
424 | for (i = 0; i < hdr->nr_zones; i++, j++, z++, p++) { | |
425 | pthread_mutex_init(&p->mutex, &attr); | |
ee3696bd | 426 | p->start = z->start << 9; |
bfbdd35b BVA |
427 | switch (z->cond) { |
428 | case BLK_ZONE_COND_NOT_WP: | |
bfbdd35b | 429 | case BLK_ZONE_COND_FULL: |
ee3696bd | 430 | p->wp = p->start + zone_size; |
bfbdd35b BVA |
431 | break; |
432 | default: | |
433 | assert(z->start <= z->wp); | |
ee3696bd DLM |
434 | assert(z->wp <= z->start + (zone_size >> 9)); |
435 | p->wp = z->wp << 9; | |
bfbdd35b BVA |
436 | break; |
437 | } | |
438 | p->type = z->type; | |
439 | p->cond = z->cond; | |
440 | if (j > 0 && p->start != p[-1].start + zone_size) { | |
441 | log_info("%s: invalid zone data\n", | |
442 | f->file_name); | |
443 | ret = -EINVAL; | |
444 | goto close; | |
445 | } | |
446 | } | |
447 | z--; | |
448 | start_sector = z->start + z->len; | |
449 | if (j >= nr_zones) | |
450 | break; | |
451 | ret = read_zone_info(fd, start_sector, buf, bufsz); | |
452 | if (ret < 0) { | |
a0c84dd4 JA |
453 | log_info("fio: BLKREPORTZONE(%llu) failed for %s (%d).\n", |
454 | (unsigned long long) start_sector, f->file_name, -ret); | |
bfbdd35b BVA |
455 | goto close; |
456 | } | |
457 | } | |
458 | /* a sentinel */ | |
ee3696bd | 459 | zbd_info->zone_info[nr_zones].start = start_sector << 9; |
bfbdd35b BVA |
460 | |
461 | f->zbd_info = zbd_info; | |
462 | f->zbd_info->zone_size = zone_size; | |
463 | f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ? | |
ee3696bd | 464 | ilog2(zone_size) : -1; |
bfbdd35b BVA |
465 | f->zbd_info->nr_zones = nr_zones; |
466 | zbd_info = NULL; | |
467 | ret = 0; | |
468 | ||
469 | close: | |
470 | sfree(zbd_info); | |
471 | close(fd); | |
472 | free: | |
473 | free(buf); | |
474 | out: | |
475 | pthread_mutexattr_destroy(&attr); | |
476 | return ret; | |
477 | } | |
478 | ||
479 | /* | |
480 | * Allocate zone information and store it into f->zbd_info if zonemode=zbd. | |
481 | * | |
482 | * Returns 0 upon success and a negative error code upon failure. | |
483 | */ | |
484 | int zbd_create_zone_info(struct thread_data *td, struct fio_file *f) | |
485 | { | |
486 | enum blk_zoned_model zbd_model; | |
487 | int ret = 0; | |
488 | ||
489 | assert(td->o.zone_mode == ZONE_MODE_ZBD); | |
490 | ||
491 | zbd_model = get_zbd_model(f->file_name); | |
492 | switch (zbd_model) { | |
493 | case ZBD_DM_HOST_AWARE: | |
494 | case ZBD_DM_HOST_MANAGED: | |
495 | ret = parse_zone_info(td, f); | |
496 | break; | |
497 | case ZBD_DM_NONE: | |
498 | ret = init_zone_info(td, f); | |
499 | break; | |
500 | } | |
501 | if (ret == 0) | |
502 | f->zbd_info->model = zbd_model; | |
503 | return ret; | |
504 | } | |
505 | ||
506 | void zbd_free_zone_info(struct fio_file *f) | |
507 | { | |
508 | uint32_t refcount; | |
509 | ||
510 | if (!f->zbd_info) | |
511 | return; | |
512 | ||
513 | pthread_mutex_lock(&f->zbd_info->mutex); | |
514 | refcount = --f->zbd_info->refcount; | |
515 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
516 | ||
517 | assert((int32_t)refcount >= 0); | |
518 | if (refcount == 0) | |
519 | sfree(f->zbd_info); | |
520 | f->zbd_info = NULL; | |
521 | } | |
522 | ||
523 | /* | |
524 | * Initialize f->zbd_info. | |
525 | * | |
526 | * Returns 0 upon success and a negative error code upon failure. | |
527 | * | |
528 | * Note: this function can only work correctly if it is called before the first | |
529 | * fio fork() call. | |
530 | */ | |
531 | static int zbd_init_zone_info(struct thread_data *td, struct fio_file *file) | |
532 | { | |
533 | struct thread_data *td2; | |
534 | struct fio_file *f2; | |
535 | int i, j, ret; | |
536 | ||
537 | for_each_td(td2, i) { | |
538 | for_each_file(td2, f2, j) { | |
539 | if (td2 == td && f2 == file) | |
540 | continue; | |
541 | if (!f2->zbd_info || | |
542 | strcmp(f2->file_name, file->file_name) != 0) | |
543 | continue; | |
544 | file->zbd_info = f2->zbd_info; | |
545 | file->zbd_info->refcount++; | |
546 | return 0; | |
547 | } | |
548 | } | |
549 | ||
550 | ret = zbd_create_zone_info(td, file); | |
551 | if (ret < 0) | |
552 | td_verror(td, -ret, "BLKREPORTZONE failed"); | |
553 | return ret; | |
554 | } | |
555 | ||
556 | int zbd_init(struct thread_data *td) | |
557 | { | |
558 | struct fio_file *f; | |
559 | int i; | |
560 | ||
561 | for_each_file(td, f, i) { | |
562 | if (f->filetype != FIO_TYPE_BLOCK) | |
563 | continue; | |
564 | if (td->o.zone_size && td->o.zone_size < 512) { | |
565 | log_err("%s: zone size must be at least 512 bytes for --zonemode=zbd\n\n", | |
566 | f->file_name); | |
567 | return 1; | |
568 | } | |
569 | if (td->o.zone_size == 0 && | |
570 | get_zbd_model(f->file_name) == ZBD_DM_NONE) { | |
571 | log_err("%s: Specifying the zone size is mandatory for regular block devices with --zonemode=zbd\n\n", | |
572 | f->file_name); | |
573 | return 1; | |
574 | } | |
575 | zbd_init_zone_info(td, f); | |
576 | } | |
577 | ||
578 | if (!zbd_using_direct_io()) { | |
579 | log_err("Using direct I/O is mandatory for writing to ZBD drives\n\n"); | |
580 | return 1; | |
581 | } | |
582 | ||
583 | if (!zbd_verify_sizes()) | |
584 | return 1; | |
585 | ||
586 | if (!zbd_verify_bs()) | |
587 | return 1; | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | /** | |
593 | * zbd_reset_range - reset zones for a range of sectors | |
594 | * @td: FIO thread data. | |
595 | * @f: Fio file for which to reset zones | |
596 | * @sector: Starting sector in units of 512 bytes | |
597 | * @nr_sectors: Number of sectors in units of 512 bytes | |
598 | * | |
599 | * Returns 0 upon success and a negative error code upon failure. | |
600 | */ | |
601 | static int zbd_reset_range(struct thread_data *td, const struct fio_file *f, | |
ee3696bd | 602 | uint64_t offset, uint64_t length) |
bfbdd35b BVA |
603 | { |
604 | struct blk_zone_range zr = { | |
ee3696bd DLM |
605 | .sector = offset >> 9, |
606 | .nr_sectors = length >> 9, | |
bfbdd35b BVA |
607 | }; |
608 | uint32_t zone_idx_b, zone_idx_e; | |
609 | struct fio_zone_info *zb, *ze, *z; | |
610 | int ret = 0; | |
611 | ||
612 | assert(f->fd != -1); | |
ee3696bd | 613 | assert(is_valid_offset(f, offset + length - 1)); |
bfbdd35b BVA |
614 | switch (f->zbd_info->model) { |
615 | case ZBD_DM_HOST_AWARE: | |
616 | case ZBD_DM_HOST_MANAGED: | |
617 | ret = ioctl(f->fd, BLKRESETZONE, &zr); | |
618 | if (ret < 0) { | |
619 | td_verror(td, errno, "resetting wp failed"); | |
620 | log_err("%s: resetting wp for %llu sectors at sector %llu failed (%d).\n", | |
621 | f->file_name, zr.nr_sectors, zr.sector, errno); | |
622 | return ret; | |
623 | } | |
624 | break; | |
625 | case ZBD_DM_NONE: | |
626 | break; | |
627 | } | |
628 | ||
ee3696bd | 629 | zone_idx_b = zbd_zone_idx(f, offset); |
bfbdd35b | 630 | zb = &f->zbd_info->zone_info[zone_idx_b]; |
ee3696bd | 631 | zone_idx_e = zbd_zone_idx(f, offset + length); |
bfbdd35b BVA |
632 | ze = &f->zbd_info->zone_info[zone_idx_e]; |
633 | for (z = zb; z < ze; z++) { | |
634 | pthread_mutex_lock(&z->mutex); | |
a7c2b6fc BVA |
635 | pthread_mutex_lock(&f->zbd_info->mutex); |
636 | f->zbd_info->sectors_with_data -= z->wp - z->start; | |
637 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
bfbdd35b BVA |
638 | z->wp = z->start; |
639 | z->verify_block = 0; | |
640 | pthread_mutex_unlock(&z->mutex); | |
641 | } | |
642 | ||
fd5d733f BVA |
643 | td->ts.nr_zone_resets += ze - zb; |
644 | ||
bfbdd35b BVA |
645 | return ret; |
646 | } | |
647 | ||
a0c84dd4 JA |
648 | static unsigned int zbd_zone_nr(struct zoned_block_device_info *zbd_info, |
649 | struct fio_zone_info *zone) | |
650 | { | |
089ddd95 | 651 | return zone - zbd_info->zone_info; |
a0c84dd4 JA |
652 | } |
653 | ||
bfbdd35b BVA |
654 | /** |
655 | * zbd_reset_zone - reset the write pointer of a single zone | |
656 | * @td: FIO thread data. | |
657 | * @f: FIO file associated with the disk for which to reset a write pointer. | |
658 | * @z: Zone to reset. | |
659 | * | |
660 | * Returns 0 upon success and a negative error code upon failure. | |
661 | */ | |
662 | static int zbd_reset_zone(struct thread_data *td, const struct fio_file *f, | |
663 | struct fio_zone_info *z) | |
664 | { | |
a0c84dd4 JA |
665 | dprint(FD_ZBD, "%s: resetting wp of zone %u.\n", f->file_name, |
666 | zbd_zone_nr(f->zbd_info, z)); | |
d60be7d5 DLM |
667 | |
668 | return zbd_reset_range(td, f, z->start, (z+1)->start - z->start); | |
bfbdd35b BVA |
669 | } |
670 | ||
671 | /* | |
672 | * Reset a range of zones. Returns 0 upon success and 1 upon failure. | |
673 | * @td: fio thread data. | |
674 | * @f: fio file for which to reset zones | |
675 | * @zb: first zone to reset. | |
676 | * @ze: first zone not to reset. | |
677 | * @all_zones: whether to reset all zones or only those zones for which the | |
678 | * write pointer is not a multiple of td->o.min_bs[DDIR_WRITE]. | |
679 | */ | |
680 | static int zbd_reset_zones(struct thread_data *td, struct fio_file *f, | |
681 | struct fio_zone_info *const zb, | |
682 | struct fio_zone_info *const ze, bool all_zones) | |
683 | { | |
684 | struct fio_zone_info *z, *start_z = ze; | |
ee3696bd | 685 | const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; |
bfbdd35b BVA |
686 | bool reset_wp; |
687 | int res = 0; | |
688 | ||
a0c84dd4 JA |
689 | dprint(FD_ZBD, "%s: examining zones %u .. %u\n", f->file_name, |
690 | zbd_zone_nr(f->zbd_info, zb), zbd_zone_nr(f->zbd_info, ze)); | |
bfbdd35b BVA |
691 | assert(f->fd != -1); |
692 | for (z = zb; z < ze; z++) { | |
693 | pthread_mutex_lock(&z->mutex); | |
694 | switch (z->type) { | |
695 | case BLK_ZONE_TYPE_SEQWRITE_REQ: | |
696 | reset_wp = all_zones ? z->wp != z->start : | |
697 | (td->o.td_ddir & TD_DDIR_WRITE) && | |
698 | z->wp % min_bs != 0; | |
699 | if (start_z == ze && reset_wp) { | |
700 | start_z = z; | |
701 | } else if (start_z < ze && !reset_wp) { | |
702 | dprint(FD_ZBD, | |
a0c84dd4 | 703 | "%s: resetting zones %u .. %u\n", |
bfbdd35b | 704 | f->file_name, |
a0c84dd4 JA |
705 | zbd_zone_nr(f->zbd_info, start_z), |
706 | zbd_zone_nr(f->zbd_info, z)); | |
bfbdd35b BVA |
707 | if (zbd_reset_range(td, f, start_z->start, |
708 | z->start - start_z->start) < 0) | |
709 | res = 1; | |
710 | start_z = ze; | |
711 | } | |
712 | break; | |
713 | default: | |
714 | if (start_z == ze) | |
715 | break; | |
a0c84dd4 JA |
716 | dprint(FD_ZBD, "%s: resetting zones %u .. %u\n", |
717 | f->file_name, zbd_zone_nr(f->zbd_info, start_z), | |
718 | zbd_zone_nr(f->zbd_info, z)); | |
bfbdd35b BVA |
719 | if (zbd_reset_range(td, f, start_z->start, |
720 | z->start - start_z->start) < 0) | |
721 | res = 1; | |
722 | start_z = ze; | |
723 | break; | |
724 | } | |
725 | } | |
726 | if (start_z < ze) { | |
a0c84dd4 JA |
727 | dprint(FD_ZBD, "%s: resetting zones %u .. %u\n", f->file_name, |
728 | zbd_zone_nr(f->zbd_info, start_z), | |
729 | zbd_zone_nr(f->zbd_info, z)); | |
bfbdd35b BVA |
730 | if (zbd_reset_range(td, f, start_z->start, |
731 | z->start - start_z->start) < 0) | |
732 | res = 1; | |
733 | } | |
734 | for (z = zb; z < ze; z++) | |
735 | pthread_mutex_unlock(&z->mutex); | |
736 | ||
737 | return res; | |
738 | } | |
739 | ||
a7c2b6fc BVA |
740 | /* |
741 | * Reset zbd_info.write_cnt, the counter that counts down towards the next | |
742 | * zone reset. | |
743 | */ | |
744 | static void zbd_reset_write_cnt(const struct thread_data *td, | |
745 | const struct fio_file *f) | |
746 | { | |
747 | assert(0 <= td->o.zrf.u.f && td->o.zrf.u.f <= 1); | |
748 | ||
749 | pthread_mutex_lock(&f->zbd_info->mutex); | |
750 | f->zbd_info->write_cnt = td->o.zrf.u.f ? | |
751 | min(1.0 / td->o.zrf.u.f, 0.0 + UINT_MAX) : UINT_MAX; | |
752 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
753 | } | |
754 | ||
755 | static bool zbd_dec_and_reset_write_cnt(const struct thread_data *td, | |
756 | const struct fio_file *f) | |
757 | { | |
758 | uint32_t write_cnt = 0; | |
759 | ||
760 | pthread_mutex_lock(&f->zbd_info->mutex); | |
761 | assert(f->zbd_info->write_cnt); | |
762 | if (f->zbd_info->write_cnt) | |
763 | write_cnt = --f->zbd_info->write_cnt; | |
764 | if (write_cnt == 0) | |
765 | zbd_reset_write_cnt(td, f); | |
766 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
767 | ||
768 | return write_cnt == 0; | |
769 | } | |
770 | ||
91d25131 BVA |
771 | enum swd_action { |
772 | CHECK_SWD, | |
773 | SET_SWD, | |
774 | }; | |
775 | ||
776 | /* Calculate the number of sectors with data (swd) and perform action 'a' */ | |
777 | static uint64_t zbd_process_swd(const struct fio_file *f, enum swd_action a) | |
615555bb | 778 | { |
615555bb BVA |
779 | struct fio_zone_info *zb, *ze, *z; |
780 | uint64_t swd = 0; | |
781 | ||
782 | zb = &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset)]; | |
783 | ze = &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset + | |
784 | f->io_size)]; | |
785 | for (z = zb; z < ze; z++) { | |
786 | pthread_mutex_lock(&z->mutex); | |
787 | swd += z->wp - z->start; | |
788 | } | |
789 | pthread_mutex_lock(&f->zbd_info->mutex); | |
91d25131 BVA |
790 | switch (a) { |
791 | case CHECK_SWD: | |
792 | assert(f->zbd_info->sectors_with_data == swd); | |
793 | break; | |
794 | case SET_SWD: | |
795 | f->zbd_info->sectors_with_data = swd; | |
796 | break; | |
797 | } | |
615555bb BVA |
798 | pthread_mutex_unlock(&f->zbd_info->mutex); |
799 | for (z = zb; z < ze; z++) | |
800 | pthread_mutex_unlock(&z->mutex); | |
91d25131 BVA |
801 | |
802 | return swd; | |
803 | } | |
804 | ||
805 | /* | |
806 | * The swd check is useful for debugging but takes too much time to leave | |
807 | * it enabled all the time. Hence it is disabled by default. | |
808 | */ | |
809 | static const bool enable_check_swd = false; | |
810 | ||
811 | /* Check whether the value of zbd_info.sectors_with_data is correct. */ | |
812 | static void zbd_check_swd(const struct fio_file *f) | |
813 | { | |
814 | if (!enable_check_swd) | |
815 | return; | |
816 | ||
817 | zbd_process_swd(f, CHECK_SWD); | |
818 | } | |
819 | ||
820 | static void zbd_init_swd(struct fio_file *f) | |
821 | { | |
822 | uint64_t swd; | |
823 | ||
824 | swd = zbd_process_swd(f, SET_SWD); | |
825 | dprint(FD_ZBD, "%s(%s): swd = %" PRIu64 "\n", __func__, f->file_name, | |
826 | swd); | |
615555bb BVA |
827 | } |
828 | ||
bfbdd35b BVA |
829 | void zbd_file_reset(struct thread_data *td, struct fio_file *f) |
830 | { | |
91d25131 | 831 | struct fio_zone_info *zb, *ze; |
bfbdd35b BVA |
832 | uint32_t zone_idx_e; |
833 | ||
834 | if (!f->zbd_info) | |
835 | return; | |
836 | ||
837 | zb = &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset)]; | |
838 | zone_idx_e = zbd_zone_idx(f, f->file_offset + f->io_size); | |
839 | ze = &f->zbd_info->zone_info[zone_idx_e]; | |
91d25131 | 840 | zbd_init_swd(f); |
bfbdd35b BVA |
841 | /* |
842 | * If data verification is enabled reset the affected zones before | |
843 | * writing any data to avoid that a zone reset has to be issued while | |
844 | * writing data, which causes data loss. | |
845 | */ | |
846 | zbd_reset_zones(td, f, zb, ze, td->o.verify != VERIFY_NONE && | |
847 | (td->o.td_ddir & TD_DDIR_WRITE) && | |
848 | td->runstate != TD_VERIFYING); | |
a7c2b6fc | 849 | zbd_reset_write_cnt(td, f); |
bfbdd35b BVA |
850 | } |
851 | ||
59b07544 BVA |
852 | /* The caller must hold f->zbd_info->mutex. */ |
853 | static bool is_zone_open(const struct thread_data *td, const struct fio_file *f, | |
854 | unsigned int zone_idx) | |
855 | { | |
856 | struct zoned_block_device_info *zbdi = f->zbd_info; | |
857 | int i; | |
858 | ||
859 | assert(td->o.max_open_zones <= ARRAY_SIZE(zbdi->open_zones)); | |
860 | assert(zbdi->num_open_zones <= td->o.max_open_zones); | |
861 | ||
862 | for (i = 0; i < zbdi->num_open_zones; i++) | |
863 | if (zbdi->open_zones[i] == zone_idx) | |
864 | return true; | |
865 | ||
866 | return false; | |
867 | } | |
868 | ||
869 | /* | |
870 | * Open a ZBD zone if it was not yet open. Returns true if either the zone was | |
871 | * already open or if opening a new zone is allowed. Returns false if the zone | |
872 | * was not yet open and opening a new zone would cause the zone limit to be | |
873 | * exceeded. | |
874 | */ | |
875 | static bool zbd_open_zone(struct thread_data *td, const struct io_u *io_u, | |
876 | uint32_t zone_idx) | |
877 | { | |
878 | const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; | |
879 | const struct fio_file *f = io_u->file; | |
880 | struct fio_zone_info *z = &f->zbd_info->zone_info[zone_idx]; | |
881 | bool res = true; | |
882 | ||
883 | if (z->cond == BLK_ZONE_COND_OFFLINE) | |
884 | return false; | |
885 | ||
886 | /* | |
887 | * Skip full zones with data verification enabled because resetting a | |
888 | * zone causes data loss and hence causes verification to fail. | |
889 | */ | |
890 | if (td->o.verify != VERIFY_NONE && zbd_zone_full(f, z, min_bs)) | |
891 | return false; | |
892 | ||
893 | /* Zero means no limit */ | |
894 | if (!td->o.max_open_zones) | |
895 | return true; | |
896 | ||
897 | pthread_mutex_lock(&f->zbd_info->mutex); | |
898 | if (is_zone_open(td, f, zone_idx)) | |
899 | goto out; | |
900 | res = false; | |
901 | if (f->zbd_info->num_open_zones >= td->o.max_open_zones) | |
902 | goto out; | |
903 | dprint(FD_ZBD, "%s: opening zone %d\n", f->file_name, zone_idx); | |
904 | f->zbd_info->open_zones[f->zbd_info->num_open_zones++] = zone_idx; | |
905 | z->open = 1; | |
906 | res = true; | |
907 | ||
908 | out: | |
909 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
910 | return res; | |
911 | } | |
912 | ||
913 | /* The caller must hold f->zbd_info->mutex */ | |
914 | static void zbd_close_zone(struct thread_data *td, const struct fio_file *f, | |
915 | unsigned int open_zone_idx) | |
916 | { | |
917 | uint32_t zone_idx; | |
918 | ||
919 | assert(open_zone_idx < f->zbd_info->num_open_zones); | |
920 | zone_idx = f->zbd_info->open_zones[open_zone_idx]; | |
921 | memmove(f->zbd_info->open_zones + open_zone_idx, | |
922 | f->zbd_info->open_zones + open_zone_idx + 1, | |
923 | (FIO_MAX_OPEN_ZBD_ZONES - (open_zone_idx + 1)) * | |
924 | sizeof(f->zbd_info->open_zones[0])); | |
925 | f->zbd_info->num_open_zones--; | |
926 | f->zbd_info->zone_info[zone_idx].open = 0; | |
927 | } | |
928 | ||
929 | /* | |
930 | * Modify the offset of an I/O unit that does not refer to an open zone such | |
931 | * that it refers to an open zone. Close an open zone and open a new zone if | |
932 | * necessary. This algorithm can only work correctly if all write pointers are | |
933 | * a multiple of the fio block size. The caller must neither hold z->mutex | |
934 | * nor f->zbd_info->mutex. Returns with z->mutex held upon success. | |
935 | */ | |
936 | struct fio_zone_info *zbd_convert_to_open_zone(struct thread_data *td, | |
937 | struct io_u *io_u) | |
938 | { | |
939 | const uint32_t min_bs = td->o.min_bs[io_u->ddir]; | |
940 | const struct fio_file *f = io_u->file; | |
941 | struct fio_zone_info *z; | |
942 | unsigned int open_zone_idx = -1; | |
943 | uint32_t zone_idx, new_zone_idx; | |
944 | int i; | |
945 | ||
946 | assert(is_valid_offset(f, io_u->offset)); | |
947 | ||
948 | if (td->o.max_open_zones) { | |
949 | /* | |
950 | * This statement accesses f->zbd_info->open_zones[] on purpose | |
951 | * without locking. | |
952 | */ | |
953 | zone_idx = f->zbd_info->open_zones[(io_u->offset - | |
954 | f->file_offset) * | |
955 | f->zbd_info->num_open_zones / f->io_size]; | |
956 | } else { | |
957 | zone_idx = zbd_zone_idx(f, io_u->offset); | |
958 | } | |
959 | dprint(FD_ZBD, "%s(%s): starting from zone %d (offset %lld, buflen %lld)\n", | |
960 | __func__, f->file_name, zone_idx, io_u->offset, io_u->buflen); | |
961 | ||
962 | /* | |
963 | * Since z->mutex is the outer lock and f->zbd_info->mutex the inner | |
964 | * lock it can happen that the state of the zone with index zone_idx | |
965 | * has changed after 'z' has been assigned and before f->zbd_info->mutex | |
966 | * has been obtained. Hence the loop. | |
967 | */ | |
968 | for (;;) { | |
969 | z = &f->zbd_info->zone_info[zone_idx]; | |
970 | ||
971 | pthread_mutex_lock(&z->mutex); | |
972 | pthread_mutex_lock(&f->zbd_info->mutex); | |
973 | if (td->o.max_open_zones == 0) | |
974 | goto examine_zone; | |
975 | if (f->zbd_info->num_open_zones == 0) { | |
976 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
977 | pthread_mutex_unlock(&z->mutex); | |
978 | dprint(FD_ZBD, "%s(%s): no zones are open\n", | |
979 | __func__, f->file_name); | |
980 | return NULL; | |
981 | } | |
982 | open_zone_idx = (io_u->offset - f->file_offset) * | |
983 | f->zbd_info->num_open_zones / f->io_size; | |
984 | assert(open_zone_idx < f->zbd_info->num_open_zones); | |
985 | new_zone_idx = f->zbd_info->open_zones[open_zone_idx]; | |
986 | if (new_zone_idx == zone_idx) | |
987 | break; | |
988 | zone_idx = new_zone_idx; | |
989 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
990 | pthread_mutex_unlock(&z->mutex); | |
991 | } | |
992 | ||
993 | /* Both z->mutex and f->zbd_info->mutex are held. */ | |
994 | ||
995 | examine_zone: | |
ee3696bd | 996 | if (z->wp + min_bs <= (z+1)->start) { |
59b07544 BVA |
997 | pthread_mutex_unlock(&f->zbd_info->mutex); |
998 | goto out; | |
999 | } | |
1000 | dprint(FD_ZBD, "%s(%s): closing zone %d\n", __func__, f->file_name, | |
1001 | zone_idx); | |
1002 | if (td->o.max_open_zones) | |
1003 | zbd_close_zone(td, f, open_zone_idx); | |
1004 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1005 | ||
1006 | /* Only z->mutex is held. */ | |
1007 | ||
1008 | /* Zone 'z' is full, so try to open a new zone. */ | |
1009 | for (i = f->io_size / f->zbd_info->zone_size; i > 0; i--) { | |
1010 | zone_idx++; | |
1011 | pthread_mutex_unlock(&z->mutex); | |
1012 | z++; | |
ee3696bd | 1013 | if (!is_valid_offset(f, z->start)) { |
59b07544 BVA |
1014 | /* Wrap-around. */ |
1015 | zone_idx = zbd_zone_idx(f, f->file_offset); | |
1016 | z = &f->zbd_info->zone_info[zone_idx]; | |
1017 | } | |
ee3696bd | 1018 | assert(is_valid_offset(f, z->start)); |
59b07544 BVA |
1019 | pthread_mutex_lock(&z->mutex); |
1020 | if (z->open) | |
1021 | continue; | |
1022 | if (zbd_open_zone(td, io_u, zone_idx)) | |
1023 | goto out; | |
1024 | } | |
1025 | ||
1026 | /* Only z->mutex is held. */ | |
1027 | ||
1028 | /* Check whether the write fits in any of the already opened zones. */ | |
1029 | pthread_mutex_lock(&f->zbd_info->mutex); | |
1030 | for (i = 0; i < f->zbd_info->num_open_zones; i++) { | |
1031 | zone_idx = f->zbd_info->open_zones[i]; | |
1032 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1033 | pthread_mutex_unlock(&z->mutex); | |
1034 | ||
1035 | z = &f->zbd_info->zone_info[zone_idx]; | |
1036 | ||
1037 | pthread_mutex_lock(&z->mutex); | |
ee3696bd | 1038 | if (z->wp + min_bs <= (z+1)->start) |
59b07544 BVA |
1039 | goto out; |
1040 | pthread_mutex_lock(&f->zbd_info->mutex); | |
1041 | } | |
1042 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1043 | pthread_mutex_unlock(&z->mutex); | |
1044 | dprint(FD_ZBD, "%s(%s): did not open another zone\n", __func__, | |
1045 | f->file_name); | |
1046 | return NULL; | |
1047 | ||
1048 | out: | |
1049 | dprint(FD_ZBD, "%s(%s): returning zone %d\n", __func__, f->file_name, | |
1050 | zone_idx); | |
ee3696bd | 1051 | io_u->offset = z->start; |
59b07544 BVA |
1052 | return z; |
1053 | } | |
1054 | ||
bfbdd35b | 1055 | /* The caller must hold z->mutex. */ |
59b07544 BVA |
1056 | static struct fio_zone_info *zbd_replay_write_order(struct thread_data *td, |
1057 | struct io_u *io_u, | |
1058 | struct fio_zone_info *z) | |
bfbdd35b BVA |
1059 | { |
1060 | const struct fio_file *f = io_u->file; | |
1061 | const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; | |
1062 | ||
59b07544 BVA |
1063 | if (!zbd_open_zone(td, io_u, z - f->zbd_info->zone_info)) { |
1064 | pthread_mutex_unlock(&z->mutex); | |
1065 | z = zbd_convert_to_open_zone(td, io_u); | |
1066 | assert(z); | |
1067 | } | |
1068 | ||
bfbdd35b | 1069 | if (z->verify_block * min_bs >= f->zbd_info->zone_size) |
a0c84dd4 JA |
1070 | log_err("%s: %d * %d >= %llu\n", f->file_name, z->verify_block, |
1071 | min_bs, (unsigned long long) f->zbd_info->zone_size); | |
ee3696bd | 1072 | io_u->offset = z->start + z->verify_block++ * min_bs; |
59b07544 | 1073 | return z; |
bfbdd35b BVA |
1074 | } |
1075 | ||
1076 | /* | |
1077 | * Find another zone for which @io_u fits below the write pointer. Start | |
1078 | * searching in zones @zb + 1 .. @zl and continue searching in zones | |
1079 | * @zf .. @zb - 1. | |
1080 | * | |
1081 | * Either returns NULL or returns a zone pointer and holds the mutex for that | |
1082 | * zone. | |
1083 | */ | |
1084 | static struct fio_zone_info * | |
1085 | zbd_find_zone(struct thread_data *td, struct io_u *io_u, | |
1086 | struct fio_zone_info *zb, struct fio_zone_info *zl) | |
1087 | { | |
1088 | const uint32_t min_bs = td->o.min_bs[io_u->ddir]; | |
1089 | const struct fio_file *f = io_u->file; | |
1090 | struct fio_zone_info *z1, *z2; | |
1091 | const struct fio_zone_info *const zf = | |
1092 | &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset)]; | |
1093 | ||
1094 | /* | |
1095 | * Skip to the next non-empty zone in case of sequential I/O and to | |
1096 | * the nearest non-empty zone in case of random I/O. | |
1097 | */ | |
1098 | for (z1 = zb + 1, z2 = zb - 1; z1 < zl || z2 >= zf; z1++, z2--) { | |
1099 | if (z1 < zl && z1->cond != BLK_ZONE_COND_OFFLINE) { | |
1100 | pthread_mutex_lock(&z1->mutex); | |
ee3696bd | 1101 | if (z1->start + min_bs <= z1->wp) |
bfbdd35b BVA |
1102 | return z1; |
1103 | pthread_mutex_unlock(&z1->mutex); | |
1104 | } else if (!td_random(td)) { | |
1105 | break; | |
1106 | } | |
1107 | if (td_random(td) && z2 >= zf && | |
1108 | z2->cond != BLK_ZONE_COND_OFFLINE) { | |
1109 | pthread_mutex_lock(&z2->mutex); | |
ee3696bd | 1110 | if (z2->start + min_bs <= z2->wp) |
bfbdd35b BVA |
1111 | return z2; |
1112 | pthread_mutex_unlock(&z2->mutex); | |
1113 | } | |
1114 | } | |
1115 | dprint(FD_ZBD, "%s: adjusting random read offset failed\n", | |
1116 | f->file_name); | |
1117 | return NULL; | |
1118 | } | |
1119 | ||
bfbdd35b | 1120 | /** |
d9ed3e63 | 1121 | * zbd_queue_io - update the write pointer of a sequential zone |
bfbdd35b | 1122 | * @io_u: I/O unit |
d9ed3e63 DLM |
1123 | * @success: Whether or not the I/O unit has been queued successfully |
1124 | * @q: queueing status (busy, completed or queued). | |
bfbdd35b | 1125 | * |
d9ed3e63 DLM |
1126 | * For write and trim operations, update the write pointer of the I/O unit |
1127 | * target zone. | |
bfbdd35b | 1128 | */ |
d9ed3e63 | 1129 | static void zbd_queue_io(struct io_u *io_u, int q, bool success) |
bfbdd35b | 1130 | { |
d9ed3e63 DLM |
1131 | const struct fio_file *f = io_u->file; |
1132 | struct zoned_block_device_info *zbd_info = f->zbd_info; | |
bfbdd35b BVA |
1133 | struct fio_zone_info *z; |
1134 | uint32_t zone_idx; | |
d9ed3e63 | 1135 | uint64_t zone_end; |
bfbdd35b | 1136 | |
bfbdd35b BVA |
1137 | if (!zbd_info) |
1138 | return; | |
1139 | ||
d9ed3e63 | 1140 | zone_idx = zbd_zone_idx(f, io_u->offset); |
bfbdd35b | 1141 | assert(zone_idx < zbd_info->nr_zones); |
d9ed3e63 DLM |
1142 | z = &zbd_info->zone_info[zone_idx]; |
1143 | ||
bfbdd35b BVA |
1144 | if (z->type != BLK_ZONE_TYPE_SEQWRITE_REQ) |
1145 | return; | |
d9ed3e63 | 1146 | |
bfbdd35b BVA |
1147 | if (!success) |
1148 | goto unlock; | |
d9ed3e63 DLM |
1149 | |
1150 | dprint(FD_ZBD, | |
1151 | "%s: queued I/O (%lld, %llu) for zone %u\n", | |
1152 | f->file_name, io_u->offset, io_u->buflen, zone_idx); | |
1153 | ||
bfbdd35b BVA |
1154 | switch (io_u->ddir) { |
1155 | case DDIR_WRITE: | |
d9ed3e63 DLM |
1156 | zone_end = min((uint64_t)(io_u->offset + io_u->buflen), |
1157 | (z + 1)->start); | |
a7c2b6fc BVA |
1158 | pthread_mutex_lock(&zbd_info->mutex); |
1159 | /* | |
1160 | * z->wp > zone_end means that one or more I/O errors | |
1161 | * have occurred. | |
1162 | */ | |
1163 | if (z->wp <= zone_end) | |
1164 | zbd_info->sectors_with_data += zone_end - z->wp; | |
1165 | pthread_mutex_unlock(&zbd_info->mutex); | |
bfbdd35b BVA |
1166 | z->wp = zone_end; |
1167 | break; | |
1168 | case DDIR_TRIM: | |
1169 | assert(z->wp == z->start); | |
1170 | break; | |
1171 | default: | |
1172 | break; | |
1173 | } | |
d9ed3e63 | 1174 | |
bfbdd35b | 1175 | unlock: |
d9ed3e63 DLM |
1176 | if (!success || q != FIO_Q_QUEUED) { |
1177 | /* BUSY or COMPLETED: unlock the zone */ | |
1178 | pthread_mutex_unlock(&z->mutex); | |
1179 | io_u->zbd_put_io = NULL; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | /** | |
1184 | * zbd_put_io - Unlock an I/O unit target zone lock | |
1185 | * @io_u: I/O unit | |
1186 | */ | |
1187 | static void zbd_put_io(const struct io_u *io_u) | |
1188 | { | |
1189 | const struct fio_file *f = io_u->file; | |
1190 | struct zoned_block_device_info *zbd_info = f->zbd_info; | |
1191 | struct fio_zone_info *z; | |
1192 | uint32_t zone_idx; | |
1193 | ||
1194 | if (!zbd_info) | |
1195 | return; | |
615555bb | 1196 | |
d9ed3e63 DLM |
1197 | zone_idx = zbd_zone_idx(f, io_u->offset); |
1198 | assert(zone_idx < zbd_info->nr_zones); | |
1199 | z = &zbd_info->zone_info[zone_idx]; | |
1200 | ||
1201 | if (z->type != BLK_ZONE_TYPE_SEQWRITE_REQ) | |
1202 | return; | |
1203 | ||
1204 | dprint(FD_ZBD, | |
1205 | "%s: terminate I/O (%lld, %llu) for zone %u\n", | |
1206 | f->file_name, io_u->offset, io_u->buflen, zone_idx); | |
1207 | ||
1208 | assert(pthread_mutex_unlock(&z->mutex) == 0); | |
1209 | zbd_check_swd(f); | |
bfbdd35b BVA |
1210 | } |
1211 | ||
1212 | bool zbd_unaligned_write(int error_code) | |
1213 | { | |
1214 | switch (error_code) { | |
1215 | case EIO: | |
1216 | case EREMOTEIO: | |
1217 | return true; | |
1218 | } | |
1219 | return false; | |
1220 | } | |
1221 | ||
1222 | /** | |
1223 | * zbd_adjust_block - adjust the offset and length as necessary for ZBD drives | |
1224 | * @td: FIO thread data. | |
1225 | * @io_u: FIO I/O unit. | |
1226 | * | |
1227 | * Locking strategy: returns with z->mutex locked if and only if z refers | |
1228 | * to a sequential zone and if io_u_accept is returned. z is the zone that | |
1229 | * corresponds to io_u->offset at the end of this function. | |
1230 | */ | |
1231 | enum io_u_action zbd_adjust_block(struct thread_data *td, struct io_u *io_u) | |
1232 | { | |
1233 | const struct fio_file *f = io_u->file; | |
1234 | uint32_t zone_idx_b; | |
de65f7b7 | 1235 | struct fio_zone_info *zb, *zl, *orig_zb; |
bfbdd35b BVA |
1236 | uint32_t orig_len = io_u->buflen; |
1237 | uint32_t min_bs = td->o.min_bs[io_u->ddir]; | |
1238 | uint64_t new_len; | |
1239 | int64_t range; | |
1240 | ||
1241 | if (!f->zbd_info) | |
1242 | return io_u_accept; | |
1243 | ||
1244 | assert(is_valid_offset(f, io_u->offset)); | |
1245 | assert(io_u->buflen); | |
1246 | zone_idx_b = zbd_zone_idx(f, io_u->offset); | |
1247 | zb = &f->zbd_info->zone_info[zone_idx_b]; | |
de65f7b7 | 1248 | orig_zb = zb; |
bfbdd35b BVA |
1249 | |
1250 | /* Accept the I/O offset for conventional zones. */ | |
1251 | if (zb->type == BLK_ZONE_TYPE_CONVENTIONAL) | |
1252 | return io_u_accept; | |
1253 | ||
1254 | /* | |
1255 | * Accept the I/O offset for reads if reading beyond the write pointer | |
1256 | * is enabled. | |
1257 | */ | |
1258 | if (zb->cond != BLK_ZONE_COND_OFFLINE && | |
1259 | io_u->ddir == DDIR_READ && td->o.read_beyond_wp) | |
1260 | return io_u_accept; | |
1261 | ||
615555bb BVA |
1262 | zbd_check_swd(f); |
1263 | ||
6f0c6085 DLM |
1264 | /* |
1265 | * Lock the io_u target zone. The zone will be unlocked if io_u offset | |
1266 | * is changed or when io_u completes and zbd_put_io() executed. | |
1267 | * To avoid multiple jobs doing asynchronous I/Os from deadlocking each | |
1268 | * other waiting for zone locks when building an io_u batch, first | |
1269 | * only trylock the zone. If the zone is already locked by another job, | |
1270 | * process the currently queued I/Os so that I/O progress is made and | |
1271 | * zones unlocked. | |
1272 | */ | |
1273 | if (pthread_mutex_trylock(&zb->mutex) != 0) { | |
1274 | if (!td_ioengine_flagged(td, FIO_SYNCIO)) | |
1275 | io_u_quiesce(td); | |
1276 | pthread_mutex_lock(&zb->mutex); | |
1277 | } | |
1278 | ||
bfbdd35b BVA |
1279 | switch (io_u->ddir) { |
1280 | case DDIR_READ: | |
1281 | if (td->runstate == TD_VERIFYING) { | |
59b07544 | 1282 | zb = zbd_replay_write_order(td, io_u, zb); |
bfbdd35b BVA |
1283 | goto accept; |
1284 | } | |
1285 | /* | |
de65f7b7 DLM |
1286 | * Check that there is enough written data in the zone to do an |
1287 | * I/O of at least min_bs B. If there isn't, find a new zone for | |
1288 | * the I/O. | |
bfbdd35b BVA |
1289 | */ |
1290 | range = zb->cond != BLK_ZONE_COND_OFFLINE ? | |
ee3696bd | 1291 | zb->wp - zb->start : 0; |
de65f7b7 | 1292 | if (range < min_bs || |
ee3696bd | 1293 | ((!td_random(td)) && (io_u->offset + min_bs > zb->wp))) { |
bfbdd35b BVA |
1294 | pthread_mutex_unlock(&zb->mutex); |
1295 | zl = &f->zbd_info->zone_info[zbd_zone_idx(f, | |
1296 | f->file_offset + f->io_size)]; | |
1297 | zb = zbd_find_zone(td, io_u, zb, zl); | |
1298 | if (!zb) { | |
1299 | dprint(FD_ZBD, | |
1300 | "%s: zbd_find_zone(%lld, %llu) failed\n", | |
1301 | f->file_name, io_u->offset, | |
1302 | io_u->buflen); | |
1303 | goto eof; | |
1304 | } | |
de65f7b7 DLM |
1305 | /* |
1306 | * zbd_find_zone() returned a zone with a range of at | |
1307 | * least min_bs. | |
1308 | */ | |
ee3696bd | 1309 | range = zb->wp - zb->start; |
de65f7b7 DLM |
1310 | assert(range >= min_bs); |
1311 | ||
1312 | if (!td_random(td)) | |
ee3696bd | 1313 | io_u->offset = zb->start; |
bfbdd35b | 1314 | } |
de65f7b7 DLM |
1315 | /* |
1316 | * Make sure the I/O is within the zone valid data range while | |
1317 | * maximizing the I/O size and preserving randomness. | |
1318 | */ | |
1319 | if (range <= io_u->buflen) | |
ee3696bd | 1320 | io_u->offset = zb->start; |
de65f7b7 | 1321 | else if (td_random(td)) |
ee3696bd DLM |
1322 | io_u->offset = zb->start + |
1323 | ((io_u->offset - orig_zb->start) % | |
de65f7b7 DLM |
1324 | (range - io_u->buflen)) / min_bs * min_bs; |
1325 | /* | |
1326 | * Make sure the I/O does not cross over the zone wp position. | |
1327 | */ | |
1328 | new_len = min((unsigned long long)io_u->buflen, | |
ee3696bd | 1329 | (unsigned long long)(zb->wp - io_u->offset)); |
de65f7b7 DLM |
1330 | new_len = new_len / min_bs * min_bs; |
1331 | if (new_len < io_u->buflen) { | |
1332 | io_u->buflen = new_len; | |
1333 | dprint(FD_IO, "Changed length from %u into %llu\n", | |
1334 | orig_len, io_u->buflen); | |
bfbdd35b | 1335 | } |
ee3696bd DLM |
1336 | assert(zb->start <= io_u->offset); |
1337 | assert(io_u->offset + io_u->buflen <= zb->wp); | |
bfbdd35b BVA |
1338 | goto accept; |
1339 | case DDIR_WRITE: | |
ee3696bd | 1340 | if (io_u->buflen > f->zbd_info->zone_size) |
bfbdd35b | 1341 | goto eof; |
59b07544 BVA |
1342 | if (!zbd_open_zone(td, io_u, zone_idx_b)) { |
1343 | pthread_mutex_unlock(&zb->mutex); | |
1344 | zb = zbd_convert_to_open_zone(td, io_u); | |
1345 | if (!zb) | |
1346 | goto eof; | |
1347 | zone_idx_b = zb - f->zbd_info->zone_info; | |
1348 | } | |
a7c2b6fc BVA |
1349 | /* Check whether the zone reset threshold has been exceeded */ |
1350 | if (td->o.zrf.u.f) { | |
ee3696bd | 1351 | if (f->zbd_info->sectors_with_data >= |
a7c2b6fc BVA |
1352 | f->io_size * td->o.zrt.u.f && |
1353 | zbd_dec_and_reset_write_cnt(td, f)) { | |
1354 | zb->reset_zone = 1; | |
1355 | } | |
1356 | } | |
bfbdd35b BVA |
1357 | /* Reset the zone pointer if necessary */ |
1358 | if (zb->reset_zone || zbd_zone_full(f, zb, min_bs)) { | |
1359 | assert(td->o.verify == VERIFY_NONE); | |
1360 | /* | |
1361 | * Since previous write requests may have been submitted | |
1362 | * asynchronously and since we will submit the zone | |
1363 | * reset synchronously, wait until previously submitted | |
1364 | * write requests have completed before issuing a | |
1365 | * zone reset. | |
1366 | */ | |
1367 | io_u_quiesce(td); | |
1368 | zb->reset_zone = 0; | |
1369 | if (zbd_reset_zone(td, f, zb) < 0) | |
1370 | goto eof; | |
1371 | } | |
1372 | /* Make writes occur at the write pointer */ | |
1373 | assert(!zbd_zone_full(f, zb, min_bs)); | |
ee3696bd | 1374 | io_u->offset = zb->wp; |
bfbdd35b BVA |
1375 | if (!is_valid_offset(f, io_u->offset)) { |
1376 | dprint(FD_ZBD, "Dropped request with offset %llu\n", | |
1377 | io_u->offset); | |
1378 | goto eof; | |
1379 | } | |
1380 | /* | |
1381 | * Make sure that the buflen is a multiple of the minimal | |
1382 | * block size. Give up if shrinking would make the request too | |
1383 | * small. | |
1384 | */ | |
1385 | new_len = min((unsigned long long)io_u->buflen, | |
ee3696bd | 1386 | (zb + 1)->start - io_u->offset); |
bfbdd35b BVA |
1387 | new_len = new_len / min_bs * min_bs; |
1388 | if (new_len == io_u->buflen) | |
1389 | goto accept; | |
1390 | if (new_len >= min_bs) { | |
1391 | io_u->buflen = new_len; | |
1392 | dprint(FD_IO, "Changed length from %u into %llu\n", | |
1393 | orig_len, io_u->buflen); | |
1394 | goto accept; | |
1395 | } | |
1396 | log_err("Zone remainder %lld smaller than minimum block size %d\n", | |
ee3696bd | 1397 | ((zb + 1)->start - io_u->offset), |
bfbdd35b BVA |
1398 | min_bs); |
1399 | goto eof; | |
1400 | case DDIR_TRIM: | |
1401 | /* fall-through */ | |
1402 | case DDIR_SYNC: | |
1403 | case DDIR_DATASYNC: | |
1404 | case DDIR_SYNC_FILE_RANGE: | |
1405 | case DDIR_WAIT: | |
1406 | case DDIR_LAST: | |
1407 | case DDIR_INVAL: | |
1408 | goto accept; | |
1409 | } | |
1410 | ||
1411 | assert(false); | |
1412 | ||
1413 | accept: | |
1414 | assert(zb); | |
1415 | assert(zb->cond != BLK_ZONE_COND_OFFLINE); | |
d9ed3e63 DLM |
1416 | assert(!io_u->zbd_queue_io); |
1417 | assert(!io_u->zbd_put_io); | |
1418 | io_u->zbd_queue_io = zbd_queue_io; | |
1419 | io_u->zbd_put_io = zbd_put_io; | |
bfbdd35b BVA |
1420 | return io_u_accept; |
1421 | ||
1422 | eof: | |
1423 | if (zb) | |
1424 | pthread_mutex_unlock(&zb->mutex); | |
1425 | return io_u_eof; | |
1426 | } | |
fd5d733f BVA |
1427 | |
1428 | /* Return a string with ZBD statistics */ | |
1429 | char *zbd_write_status(const struct thread_stat *ts) | |
1430 | { | |
1431 | char *res; | |
1432 | ||
a0c84dd4 | 1433 | if (asprintf(&res, "; %llu zone resets", (unsigned long long) ts->nr_zone_resets) < 0) |
fd5d733f BVA |
1434 | return NULL; |
1435 | return res; | |
1436 | } |