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; | |
4d37720a | 122 | |
fc52e449 DLM |
123 | if (!td->o.zone_size) { |
124 | td->o.zone_size = f->zbd_info->zone_size; | |
125 | if (!td->o.zone_size) { | |
126 | log_err("%s: invalid 0 zone size\n", | |
127 | f->file_name); | |
128 | return false; | |
129 | } | |
971d6a22 DLM |
130 | } else if (td->o.zone_size != f->zbd_info->zone_size) { |
131 | log_err("%s: job parameter zonesize %llu does not match disk zone size %llu.\n", | |
132 | f->file_name, (unsigned long long) td->o.zone_size, | |
133 | (unsigned long long) f->zbd_info->zone_size); | |
134 | return false; | |
fc52e449 DLM |
135 | } |
136 | ||
4d37720a DLM |
137 | if (td->o.zone_skip && |
138 | (td->o.zone_skip < td->o.zone_size || | |
139 | td->o.zone_skip % td->o.zone_size)) { | |
140 | log_err("%s: zoneskip %llu is not a multiple of the device zone size %llu.\n", | |
141 | f->file_name, (unsigned long long) td->o.zone_skip, | |
142 | (unsigned long long) td->o.zone_size); | |
143 | return false; | |
144 | } | |
145 | ||
bfbdd35b BVA |
146 | zone_idx = zbd_zone_idx(f, f->file_offset); |
147 | z = &f->zbd_info->zone_info[zone_idx]; | |
ee3696bd DLM |
148 | if (f->file_offset != z->start) { |
149 | new_offset = (z+1)->start; | |
bfbdd35b BVA |
150 | if (new_offset >= f->file_offset + f->io_size) { |
151 | log_info("%s: io_size must be at least one zone\n", | |
152 | f->file_name); | |
153 | return false; | |
154 | } | |
a0c84dd4 JA |
155 | log_info("%s: rounded up offset from %llu to %llu\n", |
156 | f->file_name, (unsigned long long) f->file_offset, | |
157 | (unsigned long long) new_offset); | |
bfbdd35b BVA |
158 | f->io_size -= (new_offset - f->file_offset); |
159 | f->file_offset = new_offset; | |
160 | } | |
161 | zone_idx = zbd_zone_idx(f, f->file_offset + f->io_size); | |
162 | z = &f->zbd_info->zone_info[zone_idx]; | |
ee3696bd | 163 | new_end = z->start; |
bfbdd35b BVA |
164 | if (f->file_offset + f->io_size != new_end) { |
165 | if (new_end <= f->file_offset) { | |
166 | log_info("%s: io_size must be at least one zone\n", | |
167 | f->file_name); | |
168 | return false; | |
169 | } | |
a0c84dd4 JA |
170 | log_info("%s: rounded down io_size from %llu to %llu\n", |
171 | f->file_name, (unsigned long long) f->io_size, | |
172 | (unsigned long long) new_end - f->file_offset); | |
bfbdd35b BVA |
173 | f->io_size = new_end - f->file_offset; |
174 | } | |
175 | } | |
176 | } | |
177 | ||
178 | return true; | |
179 | } | |
180 | ||
181 | static bool zbd_verify_bs(void) | |
182 | { | |
183 | struct thread_data *td; | |
184 | struct fio_file *f; | |
185 | uint32_t zone_size; | |
186 | int i, j, k; | |
187 | ||
188 | for_each_td(td, i) { | |
189 | for_each_file(td, f, j) { | |
190 | if (!f->zbd_info) | |
191 | continue; | |
192 | zone_size = f->zbd_info->zone_size; | |
193 | for (k = 0; k < ARRAY_SIZE(td->o.bs); k++) { | |
194 | if (td->o.verify != VERIFY_NONE && | |
ee3696bd | 195 | zone_size % td->o.bs[k] != 0) { |
bfbdd35b BVA |
196 | log_info("%s: block size %llu is not a divisor of the zone size %d\n", |
197 | f->file_name, td->o.bs[k], | |
ee3696bd | 198 | zone_size); |
bfbdd35b BVA |
199 | return false; |
200 | } | |
201 | } | |
202 | } | |
203 | } | |
204 | return true; | |
205 | } | |
206 | ||
207 | /* | |
208 | * Read zone information into @buf starting from sector @start_sector. | |
209 | * @fd is a file descriptor that refers to a block device and @bufsz is the | |
210 | * size of @buf. | |
211 | * | |
212 | * Returns 0 upon success and a negative error code upon failure. | |
7f125e7f DLM |
213 | * If the zone report is empty, always assume an error (device problem) and |
214 | * return -EIO. | |
bfbdd35b BVA |
215 | */ |
216 | static int read_zone_info(int fd, uint64_t start_sector, | |
217 | void *buf, unsigned int bufsz) | |
218 | { | |
219 | struct blk_zone_report *hdr = buf; | |
7f125e7f | 220 | int ret; |
bfbdd35b BVA |
221 | |
222 | if (bufsz < sizeof(*hdr)) | |
223 | return -EINVAL; | |
224 | ||
225 | memset(hdr, 0, sizeof(*hdr)); | |
226 | ||
227 | hdr->nr_zones = (bufsz - sizeof(*hdr)) / sizeof(struct blk_zone); | |
228 | hdr->sector = start_sector; | |
7f125e7f DLM |
229 | ret = ioctl(fd, BLKREPORTZONE, hdr); |
230 | if (ret) | |
231 | return -errno; | |
232 | if (!hdr->nr_zones) | |
233 | return -EIO; | |
234 | return 0; | |
bfbdd35b BVA |
235 | } |
236 | ||
237 | /* | |
238 | * Read up to 255 characters from the first line of a file. Strip the trailing | |
239 | * newline. | |
240 | */ | |
241 | static char *read_file(const char *path) | |
242 | { | |
243 | char line[256], *p = line; | |
244 | FILE *f; | |
245 | ||
246 | f = fopen(path, "rb"); | |
247 | if (!f) | |
248 | return NULL; | |
249 | if (!fgets(line, sizeof(line), f)) | |
250 | line[0] = '\0'; | |
251 | strsep(&p, "\n"); | |
252 | fclose(f); | |
253 | ||
254 | return strdup(line); | |
255 | } | |
256 | ||
257 | static enum blk_zoned_model get_zbd_model(const char *file_name) | |
258 | { | |
259 | enum blk_zoned_model model = ZBD_DM_NONE; | |
260 | char *zoned_attr_path = NULL; | |
261 | char *model_str = NULL; | |
262 | struct stat statbuf; | |
63e3e40d SK |
263 | char *sys_devno_path = NULL; |
264 | char *part_attr_path = NULL; | |
265 | char *part_str = NULL; | |
266 | char sys_path[PATH_MAX]; | |
267 | ssize_t sz; | |
268 | char *delim = NULL; | |
bfbdd35b BVA |
269 | |
270 | if (stat(file_name, &statbuf) < 0) | |
271 | goto out; | |
63e3e40d SK |
272 | |
273 | if (asprintf(&sys_devno_path, "/sys/dev/block/%d:%d", | |
bfbdd35b BVA |
274 | major(statbuf.st_rdev), minor(statbuf.st_rdev)) < 0) |
275 | goto out; | |
63e3e40d SK |
276 | |
277 | sz = readlink(sys_devno_path, sys_path, sizeof(sys_path) - 1); | |
278 | if (sz < 0) | |
279 | goto out; | |
280 | sys_path[sz] = '\0'; | |
281 | ||
282 | /* | |
283 | * If the device is a partition device, cut the device name in the | |
284 | * canonical sysfs path to obtain the sysfs path of the holder device. | |
285 | * e.g.: /sys/devices/.../sda/sda1 -> /sys/devices/.../sda | |
286 | */ | |
287 | if (asprintf(&part_attr_path, "/sys/dev/block/%s/partition", | |
288 | sys_path) < 0) | |
289 | goto out; | |
290 | part_str = read_file(part_attr_path); | |
291 | if (part_str && *part_str == '1') { | |
292 | delim = strrchr(sys_path, '/'); | |
293 | if (!delim) | |
294 | goto out; | |
295 | *delim = '\0'; | |
296 | } | |
297 | ||
298 | if (asprintf(&zoned_attr_path, | |
299 | "/sys/dev/block/%s/queue/zoned", sys_path) < 0) | |
300 | goto out; | |
301 | ||
bfbdd35b BVA |
302 | model_str = read_file(zoned_attr_path); |
303 | if (!model_str) | |
304 | goto out; | |
305 | dprint(FD_ZBD, "%s: zbd model string: %s\n", file_name, model_str); | |
306 | if (strcmp(model_str, "host-aware") == 0) | |
307 | model = ZBD_DM_HOST_AWARE; | |
308 | else if (strcmp(model_str, "host-managed") == 0) | |
309 | model = ZBD_DM_HOST_MANAGED; | |
310 | ||
311 | out: | |
312 | free(model_str); | |
313 | free(zoned_attr_path); | |
63e3e40d SK |
314 | free(part_str); |
315 | free(part_attr_path); | |
316 | free(sys_devno_path); | |
bfbdd35b BVA |
317 | return model; |
318 | } | |
319 | ||
320 | static int ilog2(uint64_t i) | |
321 | { | |
322 | int log = -1; | |
323 | ||
324 | while (i) { | |
325 | i >>= 1; | |
326 | log++; | |
327 | } | |
328 | return log; | |
329 | } | |
330 | ||
331 | /* | |
332 | * Initialize f->zbd_info for devices that are not zoned block devices. This | |
333 | * allows to execute a ZBD workload against a non-ZBD device. | |
334 | */ | |
335 | static int init_zone_info(struct thread_data *td, struct fio_file *f) | |
336 | { | |
337 | uint32_t nr_zones; | |
338 | struct fio_zone_info *p; | |
a4b7f12b | 339 | uint64_t zone_size = td->o.zone_size; |
bfbdd35b BVA |
340 | struct zoned_block_device_info *zbd_info = NULL; |
341 | pthread_mutexattr_t attr; | |
342 | int i; | |
343 | ||
a4b7f12b DLM |
344 | if (zone_size == 0) { |
345 | log_err("%s: Specifying the zone size is mandatory for regular block devices with --zonemode=zbd\n\n", | |
346 | f->file_name); | |
347 | return 1; | |
348 | } | |
349 | ||
350 | if (zone_size < 512) { | |
351 | log_err("%s: zone size must be at least 512 bytes for --zonemode=zbd\n\n", | |
352 | f->file_name); | |
353 | return 1; | |
354 | } | |
355 | ||
ee3696bd | 356 | nr_zones = (f->real_file_size + zone_size - 1) / zone_size; |
bfbdd35b BVA |
357 | zbd_info = scalloc(1, sizeof(*zbd_info) + |
358 | (nr_zones + 1) * sizeof(zbd_info->zone_info[0])); | |
359 | if (!zbd_info) | |
360 | return -ENOMEM; | |
361 | ||
362 | pthread_mutexattr_init(&attr); | |
363 | pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | |
364 | pthread_mutexattr_setpshared(&attr, true); | |
365 | pthread_mutex_init(&zbd_info->mutex, &attr); | |
366 | zbd_info->refcount = 1; | |
367 | p = &zbd_info->zone_info[0]; | |
368 | for (i = 0; i < nr_zones; i++, p++) { | |
369 | pthread_mutex_init(&p->mutex, &attr); | |
370 | p->start = i * zone_size; | |
371 | p->wp = p->start + zone_size; | |
372 | p->type = BLK_ZONE_TYPE_SEQWRITE_REQ; | |
373 | p->cond = BLK_ZONE_COND_EMPTY; | |
374 | } | |
375 | /* a sentinel */ | |
376 | p->start = nr_zones * zone_size; | |
377 | ||
378 | f->zbd_info = zbd_info; | |
379 | f->zbd_info->zone_size = zone_size; | |
380 | f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ? | |
ee3696bd | 381 | ilog2(zone_size) : -1; |
bfbdd35b BVA |
382 | f->zbd_info->nr_zones = nr_zones; |
383 | pthread_mutexattr_destroy(&attr); | |
384 | return 0; | |
385 | } | |
386 | ||
387 | /* | |
388 | * Parse the BLKREPORTZONE output and store it in f->zbd_info. Must be called | |
389 | * only for devices that support this ioctl, namely zoned block devices. | |
390 | */ | |
391 | static int parse_zone_info(struct thread_data *td, struct fio_file *f) | |
392 | { | |
393 | const unsigned int bufsz = sizeof(struct blk_zone_report) + | |
394 | 4096 * sizeof(struct blk_zone); | |
395 | uint32_t nr_zones; | |
396 | struct blk_zone_report *hdr; | |
397 | const struct blk_zone *z; | |
398 | struct fio_zone_info *p; | |
399 | uint64_t zone_size, start_sector; | |
400 | struct zoned_block_device_info *zbd_info = NULL; | |
401 | pthread_mutexattr_t attr; | |
402 | void *buf; | |
403 | int fd, i, j, ret = 0; | |
404 | ||
405 | pthread_mutexattr_init(&attr); | |
406 | pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | |
407 | pthread_mutexattr_setpshared(&attr, true); | |
408 | ||
409 | buf = malloc(bufsz); | |
410 | if (!buf) | |
411 | goto out; | |
412 | ||
413 | fd = open(f->file_name, O_RDONLY | O_LARGEFILE); | |
414 | if (fd < 0) { | |
415 | ret = -errno; | |
416 | goto free; | |
417 | } | |
418 | ||
419 | ret = read_zone_info(fd, 0, buf, bufsz); | |
420 | if (ret < 0) { | |
421 | log_info("fio: BLKREPORTZONE(%lu) failed for %s (%d).\n", | |
422 | 0UL, f->file_name, -ret); | |
423 | goto close; | |
424 | } | |
425 | hdr = buf; | |
426 | if (hdr->nr_zones < 1) { | |
427 | log_info("fio: %s has invalid zone information.\n", | |
428 | f->file_name); | |
429 | goto close; | |
430 | } | |
431 | z = (void *)(hdr + 1); | |
ee3696bd DLM |
432 | zone_size = z->len << 9; |
433 | nr_zones = (f->real_file_size + zone_size - 1) / zone_size; | |
bfbdd35b BVA |
434 | |
435 | if (td->o.zone_size == 0) { | |
ee3696bd DLM |
436 | td->o.zone_size = zone_size; |
437 | } else if (td->o.zone_size != zone_size) { | |
4580ff92 DLM |
438 | log_err("fio: %s job parameter zonesize %llu does not match disk zone size %llu.\n", |
439 | f->file_name, (unsigned long long) td->o.zone_size, | |
a0c84dd4 | 440 | (unsigned long long) zone_size); |
bfbdd35b BVA |
441 | ret = -EINVAL; |
442 | goto close; | |
443 | } | |
444 | ||
a0c84dd4 JA |
445 | dprint(FD_ZBD, "Device %s has %d zones of size %llu KB\n", f->file_name, |
446 | nr_zones, (unsigned long long) zone_size / 1024); | |
bfbdd35b BVA |
447 | |
448 | zbd_info = scalloc(1, sizeof(*zbd_info) + | |
449 | (nr_zones + 1) * sizeof(zbd_info->zone_info[0])); | |
450 | ret = -ENOMEM; | |
451 | if (!zbd_info) | |
452 | goto close; | |
453 | pthread_mutex_init(&zbd_info->mutex, &attr); | |
454 | zbd_info->refcount = 1; | |
455 | p = &zbd_info->zone_info[0]; | |
456 | for (start_sector = 0, j = 0; j < nr_zones;) { | |
457 | z = (void *)(hdr + 1); | |
458 | for (i = 0; i < hdr->nr_zones; i++, j++, z++, p++) { | |
459 | pthread_mutex_init(&p->mutex, &attr); | |
ee3696bd | 460 | p->start = z->start << 9; |
bfbdd35b BVA |
461 | switch (z->cond) { |
462 | case BLK_ZONE_COND_NOT_WP: | |
bfbdd35b | 463 | case BLK_ZONE_COND_FULL: |
ee3696bd | 464 | p->wp = p->start + zone_size; |
bfbdd35b BVA |
465 | break; |
466 | default: | |
467 | assert(z->start <= z->wp); | |
ee3696bd DLM |
468 | assert(z->wp <= z->start + (zone_size >> 9)); |
469 | p->wp = z->wp << 9; | |
bfbdd35b BVA |
470 | break; |
471 | } | |
472 | p->type = z->type; | |
473 | p->cond = z->cond; | |
474 | if (j > 0 && p->start != p[-1].start + zone_size) { | |
475 | log_info("%s: invalid zone data\n", | |
476 | f->file_name); | |
477 | ret = -EINVAL; | |
478 | goto close; | |
479 | } | |
480 | } | |
481 | z--; | |
482 | start_sector = z->start + z->len; | |
483 | if (j >= nr_zones) | |
484 | break; | |
485 | ret = read_zone_info(fd, start_sector, buf, bufsz); | |
486 | if (ret < 0) { | |
a0c84dd4 JA |
487 | log_info("fio: BLKREPORTZONE(%llu) failed for %s (%d).\n", |
488 | (unsigned long long) start_sector, f->file_name, -ret); | |
bfbdd35b BVA |
489 | goto close; |
490 | } | |
491 | } | |
492 | /* a sentinel */ | |
ee3696bd | 493 | zbd_info->zone_info[nr_zones].start = start_sector << 9; |
bfbdd35b BVA |
494 | |
495 | f->zbd_info = zbd_info; | |
496 | f->zbd_info->zone_size = zone_size; | |
497 | f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ? | |
ee3696bd | 498 | ilog2(zone_size) : -1; |
bfbdd35b BVA |
499 | f->zbd_info->nr_zones = nr_zones; |
500 | zbd_info = NULL; | |
501 | ret = 0; | |
502 | ||
503 | close: | |
504 | sfree(zbd_info); | |
505 | close(fd); | |
506 | free: | |
507 | free(buf); | |
508 | out: | |
509 | pthread_mutexattr_destroy(&attr); | |
510 | return ret; | |
511 | } | |
512 | ||
513 | /* | |
514 | * Allocate zone information and store it into f->zbd_info if zonemode=zbd. | |
515 | * | |
516 | * Returns 0 upon success and a negative error code upon failure. | |
517 | */ | |
379e5f09 | 518 | static int zbd_create_zone_info(struct thread_data *td, struct fio_file *f) |
bfbdd35b BVA |
519 | { |
520 | enum blk_zoned_model zbd_model; | |
521 | int ret = 0; | |
522 | ||
523 | assert(td->o.zone_mode == ZONE_MODE_ZBD); | |
524 | ||
525 | zbd_model = get_zbd_model(f->file_name); | |
526 | switch (zbd_model) { | |
527 | case ZBD_DM_HOST_AWARE: | |
528 | case ZBD_DM_HOST_MANAGED: | |
529 | ret = parse_zone_info(td, f); | |
530 | break; | |
531 | case ZBD_DM_NONE: | |
532 | ret = init_zone_info(td, f); | |
533 | break; | |
534 | } | |
535 | if (ret == 0) | |
536 | f->zbd_info->model = zbd_model; | |
537 | return ret; | |
538 | } | |
539 | ||
540 | void zbd_free_zone_info(struct fio_file *f) | |
541 | { | |
542 | uint32_t refcount; | |
543 | ||
544 | if (!f->zbd_info) | |
545 | return; | |
546 | ||
547 | pthread_mutex_lock(&f->zbd_info->mutex); | |
548 | refcount = --f->zbd_info->refcount; | |
549 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
550 | ||
551 | assert((int32_t)refcount >= 0); | |
552 | if (refcount == 0) | |
553 | sfree(f->zbd_info); | |
554 | f->zbd_info = NULL; | |
555 | } | |
556 | ||
557 | /* | |
558 | * Initialize f->zbd_info. | |
559 | * | |
560 | * Returns 0 upon success and a negative error code upon failure. | |
561 | * | |
562 | * Note: this function can only work correctly if it is called before the first | |
563 | * fio fork() call. | |
564 | */ | |
565 | static int zbd_init_zone_info(struct thread_data *td, struct fio_file *file) | |
566 | { | |
567 | struct thread_data *td2; | |
568 | struct fio_file *f2; | |
569 | int i, j, ret; | |
570 | ||
571 | for_each_td(td2, i) { | |
572 | for_each_file(td2, f2, j) { | |
573 | if (td2 == td && f2 == file) | |
574 | continue; | |
575 | if (!f2->zbd_info || | |
576 | strcmp(f2->file_name, file->file_name) != 0) | |
577 | continue; | |
578 | file->zbd_info = f2->zbd_info; | |
579 | file->zbd_info->refcount++; | |
580 | return 0; | |
581 | } | |
582 | } | |
583 | ||
584 | ret = zbd_create_zone_info(td, file); | |
585 | if (ret < 0) | |
c5837eec | 586 | td_verror(td, -ret, "zbd_create_zone_info() failed"); |
bfbdd35b BVA |
587 | return ret; |
588 | } | |
589 | ||
590 | int zbd_init(struct thread_data *td) | |
591 | { | |
592 | struct fio_file *f; | |
593 | int i; | |
594 | ||
595 | for_each_file(td, f, i) { | |
596 | if (f->filetype != FIO_TYPE_BLOCK) | |
597 | continue; | |
a4b7f12b | 598 | if (zbd_init_zone_info(td, f)) |
bfbdd35b | 599 | return 1; |
bfbdd35b BVA |
600 | } |
601 | ||
602 | if (!zbd_using_direct_io()) { | |
603 | log_err("Using direct I/O is mandatory for writing to ZBD drives\n\n"); | |
604 | return 1; | |
605 | } | |
606 | ||
607 | if (!zbd_verify_sizes()) | |
608 | return 1; | |
609 | ||
610 | if (!zbd_verify_bs()) | |
611 | return 1; | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
616 | /** | |
617 | * zbd_reset_range - reset zones for a range of sectors | |
618 | * @td: FIO thread data. | |
619 | * @f: Fio file for which to reset zones | |
620 | * @sector: Starting sector in units of 512 bytes | |
621 | * @nr_sectors: Number of sectors in units of 512 bytes | |
622 | * | |
623 | * Returns 0 upon success and a negative error code upon failure. | |
624 | */ | |
625 | static int zbd_reset_range(struct thread_data *td, const struct fio_file *f, | |
ee3696bd | 626 | uint64_t offset, uint64_t length) |
bfbdd35b BVA |
627 | { |
628 | struct blk_zone_range zr = { | |
ee3696bd DLM |
629 | .sector = offset >> 9, |
630 | .nr_sectors = length >> 9, | |
bfbdd35b BVA |
631 | }; |
632 | uint32_t zone_idx_b, zone_idx_e; | |
633 | struct fio_zone_info *zb, *ze, *z; | |
634 | int ret = 0; | |
635 | ||
636 | assert(f->fd != -1); | |
ee3696bd | 637 | assert(is_valid_offset(f, offset + length - 1)); |
bfbdd35b BVA |
638 | switch (f->zbd_info->model) { |
639 | case ZBD_DM_HOST_AWARE: | |
640 | case ZBD_DM_HOST_MANAGED: | |
641 | ret = ioctl(f->fd, BLKRESETZONE, &zr); | |
642 | if (ret < 0) { | |
643 | td_verror(td, errno, "resetting wp failed"); | |
644 | log_err("%s: resetting wp for %llu sectors at sector %llu failed (%d).\n", | |
645 | f->file_name, zr.nr_sectors, zr.sector, errno); | |
646 | return ret; | |
647 | } | |
648 | break; | |
649 | case ZBD_DM_NONE: | |
650 | break; | |
651 | } | |
652 | ||
ee3696bd | 653 | zone_idx_b = zbd_zone_idx(f, offset); |
bfbdd35b | 654 | zb = &f->zbd_info->zone_info[zone_idx_b]; |
ee3696bd | 655 | zone_idx_e = zbd_zone_idx(f, offset + length); |
bfbdd35b BVA |
656 | ze = &f->zbd_info->zone_info[zone_idx_e]; |
657 | for (z = zb; z < ze; z++) { | |
658 | pthread_mutex_lock(&z->mutex); | |
a7c2b6fc BVA |
659 | pthread_mutex_lock(&f->zbd_info->mutex); |
660 | f->zbd_info->sectors_with_data -= z->wp - z->start; | |
661 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
bfbdd35b BVA |
662 | z->wp = z->start; |
663 | z->verify_block = 0; | |
664 | pthread_mutex_unlock(&z->mutex); | |
665 | } | |
666 | ||
fd5d733f BVA |
667 | td->ts.nr_zone_resets += ze - zb; |
668 | ||
bfbdd35b BVA |
669 | return ret; |
670 | } | |
671 | ||
a0c84dd4 JA |
672 | static unsigned int zbd_zone_nr(struct zoned_block_device_info *zbd_info, |
673 | struct fio_zone_info *zone) | |
674 | { | |
089ddd95 | 675 | return zone - zbd_info->zone_info; |
a0c84dd4 JA |
676 | } |
677 | ||
bfbdd35b BVA |
678 | /** |
679 | * zbd_reset_zone - reset the write pointer of a single zone | |
680 | * @td: FIO thread data. | |
681 | * @f: FIO file associated with the disk for which to reset a write pointer. | |
682 | * @z: Zone to reset. | |
683 | * | |
684 | * Returns 0 upon success and a negative error code upon failure. | |
685 | */ | |
686 | static int zbd_reset_zone(struct thread_data *td, const struct fio_file *f, | |
687 | struct fio_zone_info *z) | |
688 | { | |
a0c84dd4 JA |
689 | dprint(FD_ZBD, "%s: resetting wp of zone %u.\n", f->file_name, |
690 | zbd_zone_nr(f->zbd_info, z)); | |
d60be7d5 DLM |
691 | |
692 | return zbd_reset_range(td, f, z->start, (z+1)->start - z->start); | |
bfbdd35b BVA |
693 | } |
694 | ||
695 | /* | |
696 | * Reset a range of zones. Returns 0 upon success and 1 upon failure. | |
697 | * @td: fio thread data. | |
698 | * @f: fio file for which to reset zones | |
699 | * @zb: first zone to reset. | |
700 | * @ze: first zone not to reset. | |
701 | * @all_zones: whether to reset all zones or only those zones for which the | |
702 | * write pointer is not a multiple of td->o.min_bs[DDIR_WRITE]. | |
703 | */ | |
704 | static int zbd_reset_zones(struct thread_data *td, struct fio_file *f, | |
705 | struct fio_zone_info *const zb, | |
706 | struct fio_zone_info *const ze, bool all_zones) | |
707 | { | |
708 | struct fio_zone_info *z, *start_z = ze; | |
ee3696bd | 709 | const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; |
bfbdd35b BVA |
710 | bool reset_wp; |
711 | int res = 0; | |
712 | ||
a0c84dd4 JA |
713 | dprint(FD_ZBD, "%s: examining zones %u .. %u\n", f->file_name, |
714 | zbd_zone_nr(f->zbd_info, zb), zbd_zone_nr(f->zbd_info, ze)); | |
bfbdd35b BVA |
715 | assert(f->fd != -1); |
716 | for (z = zb; z < ze; z++) { | |
717 | pthread_mutex_lock(&z->mutex); | |
718 | switch (z->type) { | |
719 | case BLK_ZONE_TYPE_SEQWRITE_REQ: | |
720 | reset_wp = all_zones ? z->wp != z->start : | |
721 | (td->o.td_ddir & TD_DDIR_WRITE) && | |
722 | z->wp % min_bs != 0; | |
723 | if (start_z == ze && reset_wp) { | |
724 | start_z = z; | |
725 | } else if (start_z < ze && !reset_wp) { | |
726 | dprint(FD_ZBD, | |
a0c84dd4 | 727 | "%s: resetting zones %u .. %u\n", |
bfbdd35b | 728 | f->file_name, |
a0c84dd4 JA |
729 | zbd_zone_nr(f->zbd_info, start_z), |
730 | zbd_zone_nr(f->zbd_info, z)); | |
bfbdd35b BVA |
731 | if (zbd_reset_range(td, f, start_z->start, |
732 | z->start - start_z->start) < 0) | |
733 | res = 1; | |
734 | start_z = ze; | |
735 | } | |
736 | break; | |
737 | default: | |
738 | if (start_z == ze) | |
739 | break; | |
a0c84dd4 JA |
740 | dprint(FD_ZBD, "%s: resetting zones %u .. %u\n", |
741 | f->file_name, zbd_zone_nr(f->zbd_info, start_z), | |
742 | zbd_zone_nr(f->zbd_info, z)); | |
bfbdd35b BVA |
743 | if (zbd_reset_range(td, f, start_z->start, |
744 | z->start - start_z->start) < 0) | |
745 | res = 1; | |
746 | start_z = ze; | |
747 | break; | |
748 | } | |
749 | } | |
750 | if (start_z < ze) { | |
a0c84dd4 JA |
751 | dprint(FD_ZBD, "%s: resetting zones %u .. %u\n", f->file_name, |
752 | zbd_zone_nr(f->zbd_info, start_z), | |
753 | zbd_zone_nr(f->zbd_info, z)); | |
bfbdd35b BVA |
754 | if (zbd_reset_range(td, f, start_z->start, |
755 | z->start - start_z->start) < 0) | |
756 | res = 1; | |
757 | } | |
758 | for (z = zb; z < ze; z++) | |
759 | pthread_mutex_unlock(&z->mutex); | |
760 | ||
761 | return res; | |
762 | } | |
763 | ||
a7c2b6fc BVA |
764 | /* |
765 | * Reset zbd_info.write_cnt, the counter that counts down towards the next | |
766 | * zone reset. | |
767 | */ | |
768 | static void zbd_reset_write_cnt(const struct thread_data *td, | |
769 | const struct fio_file *f) | |
770 | { | |
771 | assert(0 <= td->o.zrf.u.f && td->o.zrf.u.f <= 1); | |
772 | ||
773 | pthread_mutex_lock(&f->zbd_info->mutex); | |
774 | f->zbd_info->write_cnt = td->o.zrf.u.f ? | |
775 | min(1.0 / td->o.zrf.u.f, 0.0 + UINT_MAX) : UINT_MAX; | |
776 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
777 | } | |
778 | ||
779 | static bool zbd_dec_and_reset_write_cnt(const struct thread_data *td, | |
780 | const struct fio_file *f) | |
781 | { | |
782 | uint32_t write_cnt = 0; | |
783 | ||
784 | pthread_mutex_lock(&f->zbd_info->mutex); | |
785 | assert(f->zbd_info->write_cnt); | |
786 | if (f->zbd_info->write_cnt) | |
787 | write_cnt = --f->zbd_info->write_cnt; | |
788 | if (write_cnt == 0) | |
789 | zbd_reset_write_cnt(td, f); | |
790 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
791 | ||
792 | return write_cnt == 0; | |
793 | } | |
794 | ||
91d25131 BVA |
795 | enum swd_action { |
796 | CHECK_SWD, | |
797 | SET_SWD, | |
798 | }; | |
799 | ||
800 | /* Calculate the number of sectors with data (swd) and perform action 'a' */ | |
801 | static uint64_t zbd_process_swd(const struct fio_file *f, enum swd_action a) | |
615555bb | 802 | { |
615555bb BVA |
803 | struct fio_zone_info *zb, *ze, *z; |
804 | uint64_t swd = 0; | |
805 | ||
806 | zb = &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset)]; | |
807 | ze = &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset + | |
808 | f->io_size)]; | |
809 | for (z = zb; z < ze; z++) { | |
810 | pthread_mutex_lock(&z->mutex); | |
811 | swd += z->wp - z->start; | |
812 | } | |
813 | pthread_mutex_lock(&f->zbd_info->mutex); | |
91d25131 BVA |
814 | switch (a) { |
815 | case CHECK_SWD: | |
816 | assert(f->zbd_info->sectors_with_data == swd); | |
817 | break; | |
818 | case SET_SWD: | |
819 | f->zbd_info->sectors_with_data = swd; | |
820 | break; | |
821 | } | |
615555bb BVA |
822 | pthread_mutex_unlock(&f->zbd_info->mutex); |
823 | for (z = zb; z < ze; z++) | |
824 | pthread_mutex_unlock(&z->mutex); | |
91d25131 BVA |
825 | |
826 | return swd; | |
827 | } | |
828 | ||
829 | /* | |
830 | * The swd check is useful for debugging but takes too much time to leave | |
831 | * it enabled all the time. Hence it is disabled by default. | |
832 | */ | |
833 | static const bool enable_check_swd = false; | |
834 | ||
835 | /* Check whether the value of zbd_info.sectors_with_data is correct. */ | |
836 | static void zbd_check_swd(const struct fio_file *f) | |
837 | { | |
838 | if (!enable_check_swd) | |
839 | return; | |
840 | ||
841 | zbd_process_swd(f, CHECK_SWD); | |
842 | } | |
843 | ||
844 | static void zbd_init_swd(struct fio_file *f) | |
845 | { | |
846 | uint64_t swd; | |
847 | ||
848 | swd = zbd_process_swd(f, SET_SWD); | |
849 | dprint(FD_ZBD, "%s(%s): swd = %" PRIu64 "\n", __func__, f->file_name, | |
850 | swd); | |
615555bb BVA |
851 | } |
852 | ||
bfbdd35b BVA |
853 | void zbd_file_reset(struct thread_data *td, struct fio_file *f) |
854 | { | |
91d25131 | 855 | struct fio_zone_info *zb, *ze; |
bfbdd35b BVA |
856 | uint32_t zone_idx_e; |
857 | ||
858 | if (!f->zbd_info) | |
859 | return; | |
860 | ||
861 | zb = &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset)]; | |
862 | zone_idx_e = zbd_zone_idx(f, f->file_offset + f->io_size); | |
863 | ze = &f->zbd_info->zone_info[zone_idx_e]; | |
91d25131 | 864 | zbd_init_swd(f); |
bfbdd35b BVA |
865 | /* |
866 | * If data verification is enabled reset the affected zones before | |
867 | * writing any data to avoid that a zone reset has to be issued while | |
868 | * writing data, which causes data loss. | |
869 | */ | |
870 | zbd_reset_zones(td, f, zb, ze, td->o.verify != VERIFY_NONE && | |
871 | (td->o.td_ddir & TD_DDIR_WRITE) && | |
872 | td->runstate != TD_VERIFYING); | |
a7c2b6fc | 873 | zbd_reset_write_cnt(td, f); |
bfbdd35b BVA |
874 | } |
875 | ||
59b07544 BVA |
876 | /* The caller must hold f->zbd_info->mutex. */ |
877 | static bool is_zone_open(const struct thread_data *td, const struct fio_file *f, | |
878 | unsigned int zone_idx) | |
879 | { | |
880 | struct zoned_block_device_info *zbdi = f->zbd_info; | |
881 | int i; | |
882 | ||
883 | assert(td->o.max_open_zones <= ARRAY_SIZE(zbdi->open_zones)); | |
884 | assert(zbdi->num_open_zones <= td->o.max_open_zones); | |
885 | ||
886 | for (i = 0; i < zbdi->num_open_zones; i++) | |
887 | if (zbdi->open_zones[i] == zone_idx) | |
888 | return true; | |
889 | ||
890 | return false; | |
891 | } | |
892 | ||
893 | /* | |
894 | * Open a ZBD zone if it was not yet open. Returns true if either the zone was | |
895 | * already open or if opening a new zone is allowed. Returns false if the zone | |
896 | * was not yet open and opening a new zone would cause the zone limit to be | |
897 | * exceeded. | |
898 | */ | |
899 | static bool zbd_open_zone(struct thread_data *td, const struct io_u *io_u, | |
900 | uint32_t zone_idx) | |
901 | { | |
902 | const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; | |
903 | const struct fio_file *f = io_u->file; | |
904 | struct fio_zone_info *z = &f->zbd_info->zone_info[zone_idx]; | |
905 | bool res = true; | |
906 | ||
907 | if (z->cond == BLK_ZONE_COND_OFFLINE) | |
908 | return false; | |
909 | ||
910 | /* | |
911 | * Skip full zones with data verification enabled because resetting a | |
912 | * zone causes data loss and hence causes verification to fail. | |
913 | */ | |
914 | if (td->o.verify != VERIFY_NONE && zbd_zone_full(f, z, min_bs)) | |
915 | return false; | |
916 | ||
917 | /* Zero means no limit */ | |
918 | if (!td->o.max_open_zones) | |
919 | return true; | |
920 | ||
921 | pthread_mutex_lock(&f->zbd_info->mutex); | |
922 | if (is_zone_open(td, f, zone_idx)) | |
923 | goto out; | |
924 | res = false; | |
925 | if (f->zbd_info->num_open_zones >= td->o.max_open_zones) | |
926 | goto out; | |
927 | dprint(FD_ZBD, "%s: opening zone %d\n", f->file_name, zone_idx); | |
928 | f->zbd_info->open_zones[f->zbd_info->num_open_zones++] = zone_idx; | |
929 | z->open = 1; | |
930 | res = true; | |
931 | ||
932 | out: | |
933 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
934 | return res; | |
935 | } | |
936 | ||
937 | /* The caller must hold f->zbd_info->mutex */ | |
938 | static void zbd_close_zone(struct thread_data *td, const struct fio_file *f, | |
939 | unsigned int open_zone_idx) | |
940 | { | |
941 | uint32_t zone_idx; | |
942 | ||
943 | assert(open_zone_idx < f->zbd_info->num_open_zones); | |
944 | zone_idx = f->zbd_info->open_zones[open_zone_idx]; | |
945 | memmove(f->zbd_info->open_zones + open_zone_idx, | |
946 | f->zbd_info->open_zones + open_zone_idx + 1, | |
947 | (FIO_MAX_OPEN_ZBD_ZONES - (open_zone_idx + 1)) * | |
948 | sizeof(f->zbd_info->open_zones[0])); | |
949 | f->zbd_info->num_open_zones--; | |
950 | f->zbd_info->zone_info[zone_idx].open = 0; | |
951 | } | |
952 | ||
953 | /* | |
954 | * Modify the offset of an I/O unit that does not refer to an open zone such | |
955 | * that it refers to an open zone. Close an open zone and open a new zone if | |
956 | * necessary. This algorithm can only work correctly if all write pointers are | |
957 | * a multiple of the fio block size. The caller must neither hold z->mutex | |
958 | * nor f->zbd_info->mutex. Returns with z->mutex held upon success. | |
959 | */ | |
379e5f09 BVA |
960 | static struct fio_zone_info *zbd_convert_to_open_zone(struct thread_data *td, |
961 | struct io_u *io_u) | |
59b07544 BVA |
962 | { |
963 | const uint32_t min_bs = td->o.min_bs[io_u->ddir]; | |
964 | const struct fio_file *f = io_u->file; | |
965 | struct fio_zone_info *z; | |
966 | unsigned int open_zone_idx = -1; | |
967 | uint32_t zone_idx, new_zone_idx; | |
968 | int i; | |
969 | ||
970 | assert(is_valid_offset(f, io_u->offset)); | |
971 | ||
972 | if (td->o.max_open_zones) { | |
973 | /* | |
974 | * This statement accesses f->zbd_info->open_zones[] on purpose | |
975 | * without locking. | |
976 | */ | |
977 | zone_idx = f->zbd_info->open_zones[(io_u->offset - | |
978 | f->file_offset) * | |
979 | f->zbd_info->num_open_zones / f->io_size]; | |
980 | } else { | |
981 | zone_idx = zbd_zone_idx(f, io_u->offset); | |
982 | } | |
983 | dprint(FD_ZBD, "%s(%s): starting from zone %d (offset %lld, buflen %lld)\n", | |
984 | __func__, f->file_name, zone_idx, io_u->offset, io_u->buflen); | |
985 | ||
986 | /* | |
987 | * Since z->mutex is the outer lock and f->zbd_info->mutex the inner | |
988 | * lock it can happen that the state of the zone with index zone_idx | |
989 | * has changed after 'z' has been assigned and before f->zbd_info->mutex | |
990 | * has been obtained. Hence the loop. | |
991 | */ | |
992 | for (;;) { | |
993 | z = &f->zbd_info->zone_info[zone_idx]; | |
994 | ||
995 | pthread_mutex_lock(&z->mutex); | |
996 | pthread_mutex_lock(&f->zbd_info->mutex); | |
997 | if (td->o.max_open_zones == 0) | |
998 | goto examine_zone; | |
999 | if (f->zbd_info->num_open_zones == 0) { | |
1000 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1001 | pthread_mutex_unlock(&z->mutex); | |
1002 | dprint(FD_ZBD, "%s(%s): no zones are open\n", | |
1003 | __func__, f->file_name); | |
1004 | return NULL; | |
1005 | } | |
1006 | open_zone_idx = (io_u->offset - f->file_offset) * | |
1007 | f->zbd_info->num_open_zones / f->io_size; | |
1008 | assert(open_zone_idx < f->zbd_info->num_open_zones); | |
1009 | new_zone_idx = f->zbd_info->open_zones[open_zone_idx]; | |
1010 | if (new_zone_idx == zone_idx) | |
1011 | break; | |
1012 | zone_idx = new_zone_idx; | |
1013 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1014 | pthread_mutex_unlock(&z->mutex); | |
1015 | } | |
1016 | ||
1017 | /* Both z->mutex and f->zbd_info->mutex are held. */ | |
1018 | ||
1019 | examine_zone: | |
ee3696bd | 1020 | if (z->wp + min_bs <= (z+1)->start) { |
59b07544 BVA |
1021 | pthread_mutex_unlock(&f->zbd_info->mutex); |
1022 | goto out; | |
1023 | } | |
1024 | dprint(FD_ZBD, "%s(%s): closing zone %d\n", __func__, f->file_name, | |
1025 | zone_idx); | |
1026 | if (td->o.max_open_zones) | |
1027 | zbd_close_zone(td, f, open_zone_idx); | |
1028 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1029 | ||
1030 | /* Only z->mutex is held. */ | |
1031 | ||
1032 | /* Zone 'z' is full, so try to open a new zone. */ | |
1033 | for (i = f->io_size / f->zbd_info->zone_size; i > 0; i--) { | |
1034 | zone_idx++; | |
1035 | pthread_mutex_unlock(&z->mutex); | |
1036 | z++; | |
ee3696bd | 1037 | if (!is_valid_offset(f, z->start)) { |
59b07544 BVA |
1038 | /* Wrap-around. */ |
1039 | zone_idx = zbd_zone_idx(f, f->file_offset); | |
1040 | z = &f->zbd_info->zone_info[zone_idx]; | |
1041 | } | |
ee3696bd | 1042 | assert(is_valid_offset(f, z->start)); |
59b07544 BVA |
1043 | pthread_mutex_lock(&z->mutex); |
1044 | if (z->open) | |
1045 | continue; | |
1046 | if (zbd_open_zone(td, io_u, zone_idx)) | |
1047 | goto out; | |
1048 | } | |
1049 | ||
1050 | /* Only z->mutex is held. */ | |
1051 | ||
1052 | /* Check whether the write fits in any of the already opened zones. */ | |
1053 | pthread_mutex_lock(&f->zbd_info->mutex); | |
1054 | for (i = 0; i < f->zbd_info->num_open_zones; i++) { | |
1055 | zone_idx = f->zbd_info->open_zones[i]; | |
1056 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1057 | pthread_mutex_unlock(&z->mutex); | |
1058 | ||
1059 | z = &f->zbd_info->zone_info[zone_idx]; | |
1060 | ||
1061 | pthread_mutex_lock(&z->mutex); | |
ee3696bd | 1062 | if (z->wp + min_bs <= (z+1)->start) |
59b07544 BVA |
1063 | goto out; |
1064 | pthread_mutex_lock(&f->zbd_info->mutex); | |
1065 | } | |
1066 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1067 | pthread_mutex_unlock(&z->mutex); | |
1068 | dprint(FD_ZBD, "%s(%s): did not open another zone\n", __func__, | |
1069 | f->file_name); | |
1070 | return NULL; | |
1071 | ||
1072 | out: | |
1073 | dprint(FD_ZBD, "%s(%s): returning zone %d\n", __func__, f->file_name, | |
1074 | zone_idx); | |
ee3696bd | 1075 | io_u->offset = z->start; |
59b07544 BVA |
1076 | return z; |
1077 | } | |
1078 | ||
bfbdd35b | 1079 | /* The caller must hold z->mutex. */ |
59b07544 BVA |
1080 | static struct fio_zone_info *zbd_replay_write_order(struct thread_data *td, |
1081 | struct io_u *io_u, | |
1082 | struct fio_zone_info *z) | |
bfbdd35b BVA |
1083 | { |
1084 | const struct fio_file *f = io_u->file; | |
1085 | const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; | |
1086 | ||
59b07544 BVA |
1087 | if (!zbd_open_zone(td, io_u, z - f->zbd_info->zone_info)) { |
1088 | pthread_mutex_unlock(&z->mutex); | |
1089 | z = zbd_convert_to_open_zone(td, io_u); | |
1090 | assert(z); | |
1091 | } | |
1092 | ||
bfbdd35b | 1093 | if (z->verify_block * min_bs >= f->zbd_info->zone_size) |
a0c84dd4 JA |
1094 | log_err("%s: %d * %d >= %llu\n", f->file_name, z->verify_block, |
1095 | min_bs, (unsigned long long) f->zbd_info->zone_size); | |
ee3696bd | 1096 | io_u->offset = z->start + z->verify_block++ * min_bs; |
59b07544 | 1097 | return z; |
bfbdd35b BVA |
1098 | } |
1099 | ||
1100 | /* | |
1101 | * Find another zone for which @io_u fits below the write pointer. Start | |
1102 | * searching in zones @zb + 1 .. @zl and continue searching in zones | |
1103 | * @zf .. @zb - 1. | |
1104 | * | |
1105 | * Either returns NULL or returns a zone pointer and holds the mutex for that | |
1106 | * zone. | |
1107 | */ | |
1108 | static struct fio_zone_info * | |
1109 | zbd_find_zone(struct thread_data *td, struct io_u *io_u, | |
1110 | struct fio_zone_info *zb, struct fio_zone_info *zl) | |
1111 | { | |
1112 | const uint32_t min_bs = td->o.min_bs[io_u->ddir]; | |
1113 | const struct fio_file *f = io_u->file; | |
1114 | struct fio_zone_info *z1, *z2; | |
1115 | const struct fio_zone_info *const zf = | |
1116 | &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset)]; | |
1117 | ||
1118 | /* | |
1119 | * Skip to the next non-empty zone in case of sequential I/O and to | |
1120 | * the nearest non-empty zone in case of random I/O. | |
1121 | */ | |
1122 | for (z1 = zb + 1, z2 = zb - 1; z1 < zl || z2 >= zf; z1++, z2--) { | |
1123 | if (z1 < zl && z1->cond != BLK_ZONE_COND_OFFLINE) { | |
1124 | pthread_mutex_lock(&z1->mutex); | |
ee3696bd | 1125 | if (z1->start + min_bs <= z1->wp) |
bfbdd35b BVA |
1126 | return z1; |
1127 | pthread_mutex_unlock(&z1->mutex); | |
1128 | } else if (!td_random(td)) { | |
1129 | break; | |
1130 | } | |
1131 | if (td_random(td) && z2 >= zf && | |
1132 | z2->cond != BLK_ZONE_COND_OFFLINE) { | |
1133 | pthread_mutex_lock(&z2->mutex); | |
ee3696bd | 1134 | if (z2->start + min_bs <= z2->wp) |
bfbdd35b BVA |
1135 | return z2; |
1136 | pthread_mutex_unlock(&z2->mutex); | |
1137 | } | |
1138 | } | |
1139 | dprint(FD_ZBD, "%s: adjusting random read offset failed\n", | |
1140 | f->file_name); | |
1141 | return NULL; | |
1142 | } | |
1143 | ||
bfbdd35b | 1144 | /** |
d9ed3e63 | 1145 | * zbd_queue_io - update the write pointer of a sequential zone |
bfbdd35b | 1146 | * @io_u: I/O unit |
d9ed3e63 DLM |
1147 | * @success: Whether or not the I/O unit has been queued successfully |
1148 | * @q: queueing status (busy, completed or queued). | |
bfbdd35b | 1149 | * |
d9ed3e63 DLM |
1150 | * For write and trim operations, update the write pointer of the I/O unit |
1151 | * target zone. | |
bfbdd35b | 1152 | */ |
d9ed3e63 | 1153 | static void zbd_queue_io(struct io_u *io_u, int q, bool success) |
bfbdd35b | 1154 | { |
d9ed3e63 DLM |
1155 | const struct fio_file *f = io_u->file; |
1156 | struct zoned_block_device_info *zbd_info = f->zbd_info; | |
bfbdd35b BVA |
1157 | struct fio_zone_info *z; |
1158 | uint32_t zone_idx; | |
d9ed3e63 | 1159 | uint64_t zone_end; |
bfbdd35b | 1160 | |
bfbdd35b BVA |
1161 | if (!zbd_info) |
1162 | return; | |
1163 | ||
d9ed3e63 | 1164 | zone_idx = zbd_zone_idx(f, io_u->offset); |
bfbdd35b | 1165 | assert(zone_idx < zbd_info->nr_zones); |
d9ed3e63 DLM |
1166 | z = &zbd_info->zone_info[zone_idx]; |
1167 | ||
bfbdd35b BVA |
1168 | if (z->type != BLK_ZONE_TYPE_SEQWRITE_REQ) |
1169 | return; | |
d9ed3e63 | 1170 | |
bfbdd35b BVA |
1171 | if (!success) |
1172 | goto unlock; | |
d9ed3e63 DLM |
1173 | |
1174 | dprint(FD_ZBD, | |
1175 | "%s: queued I/O (%lld, %llu) for zone %u\n", | |
1176 | f->file_name, io_u->offset, io_u->buflen, zone_idx); | |
1177 | ||
bfbdd35b BVA |
1178 | switch (io_u->ddir) { |
1179 | case DDIR_WRITE: | |
d9ed3e63 DLM |
1180 | zone_end = min((uint64_t)(io_u->offset + io_u->buflen), |
1181 | (z + 1)->start); | |
a7c2b6fc BVA |
1182 | pthread_mutex_lock(&zbd_info->mutex); |
1183 | /* | |
1184 | * z->wp > zone_end means that one or more I/O errors | |
1185 | * have occurred. | |
1186 | */ | |
1187 | if (z->wp <= zone_end) | |
1188 | zbd_info->sectors_with_data += zone_end - z->wp; | |
1189 | pthread_mutex_unlock(&zbd_info->mutex); | |
bfbdd35b BVA |
1190 | z->wp = zone_end; |
1191 | break; | |
1192 | case DDIR_TRIM: | |
1193 | assert(z->wp == z->start); | |
1194 | break; | |
1195 | default: | |
1196 | break; | |
1197 | } | |
d9ed3e63 | 1198 | |
bfbdd35b | 1199 | unlock: |
d9ed3e63 DLM |
1200 | if (!success || q != FIO_Q_QUEUED) { |
1201 | /* BUSY or COMPLETED: unlock the zone */ | |
1202 | pthread_mutex_unlock(&z->mutex); | |
1203 | io_u->zbd_put_io = NULL; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | /** | |
1208 | * zbd_put_io - Unlock an I/O unit target zone lock | |
1209 | * @io_u: I/O unit | |
1210 | */ | |
1211 | static void zbd_put_io(const struct io_u *io_u) | |
1212 | { | |
1213 | const struct fio_file *f = io_u->file; | |
1214 | struct zoned_block_device_info *zbd_info = f->zbd_info; | |
1215 | struct fio_zone_info *z; | |
1216 | uint32_t zone_idx; | |
1217 | ||
1218 | if (!zbd_info) | |
1219 | return; | |
615555bb | 1220 | |
d9ed3e63 DLM |
1221 | zone_idx = zbd_zone_idx(f, io_u->offset); |
1222 | assert(zone_idx < zbd_info->nr_zones); | |
1223 | z = &zbd_info->zone_info[zone_idx]; | |
1224 | ||
1225 | if (z->type != BLK_ZONE_TYPE_SEQWRITE_REQ) | |
1226 | return; | |
1227 | ||
1228 | dprint(FD_ZBD, | |
1229 | "%s: terminate I/O (%lld, %llu) for zone %u\n", | |
1230 | f->file_name, io_u->offset, io_u->buflen, zone_idx); | |
1231 | ||
1232 | assert(pthread_mutex_unlock(&z->mutex) == 0); | |
1233 | zbd_check_swd(f); | |
bfbdd35b BVA |
1234 | } |
1235 | ||
1236 | bool zbd_unaligned_write(int error_code) | |
1237 | { | |
1238 | switch (error_code) { | |
1239 | case EIO: | |
1240 | case EREMOTEIO: | |
1241 | return true; | |
1242 | } | |
1243 | return false; | |
1244 | } | |
1245 | ||
4d37720a DLM |
1246 | /** |
1247 | * setup_zbd_zone_mode - handle zoneskip as necessary for ZBD drives | |
1248 | * @td: FIO thread data. | |
1249 | * @io_u: FIO I/O unit. | |
1250 | * | |
1251 | * For sequential workloads, change the file offset to skip zoneskip bytes when | |
1252 | * no more IO can be performed in the current zone. | |
1253 | * - For read workloads, zoneskip is applied when the io has reached the end of | |
1254 | * the zone or the zone write position (when td->o.read_beyond_wp is false). | |
1255 | * - For write workloads, zoneskip is applied when the zone is full. | |
1256 | * This applies only to read and write operations. | |
1257 | */ | |
1258 | void setup_zbd_zone_mode(struct thread_data *td, struct io_u *io_u) | |
1259 | { | |
1260 | struct fio_file *f = io_u->file; | |
1261 | enum fio_ddir ddir = io_u->ddir; | |
1262 | struct fio_zone_info *z; | |
1263 | uint32_t zone_idx; | |
1264 | ||
1265 | assert(td->o.zone_mode == ZONE_MODE_ZBD); | |
1266 | assert(td->o.zone_size); | |
1267 | ||
1268 | /* | |
1269 | * zone_skip is valid only for sequential workloads. | |
1270 | */ | |
1271 | if (td_random(td) || !td->o.zone_skip) | |
1272 | return; | |
1273 | ||
1274 | /* | |
1275 | * It is time to switch to a new zone if: | |
1276 | * - zone_bytes == zone_size bytes have already been accessed | |
1277 | * - The last position reached the end of the current zone. | |
1278 | * - For reads with td->o.read_beyond_wp == false, the last position | |
1279 | * reached the zone write pointer. | |
1280 | */ | |
1281 | zone_idx = zbd_zone_idx(f, f->last_pos[ddir]); | |
1282 | z = &f->zbd_info->zone_info[zone_idx]; | |
1283 | ||
1284 | if (td->zone_bytes >= td->o.zone_size || | |
1285 | f->last_pos[ddir] >= (z+1)->start || | |
1286 | (ddir == DDIR_READ && | |
1287 | (!td->o.read_beyond_wp) && f->last_pos[ddir] >= z->wp)) { | |
1288 | /* | |
1289 | * Skip zones. | |
1290 | */ | |
1291 | td->zone_bytes = 0; | |
1292 | f->file_offset += td->o.zone_size + td->o.zone_skip; | |
1293 | ||
1294 | /* | |
1295 | * Wrap from the beginning, if we exceed the file size | |
1296 | */ | |
1297 | if (f->file_offset >= f->real_file_size) | |
1298 | f->file_offset = get_start_offset(td, f); | |
1299 | ||
1300 | f->last_pos[ddir] = f->file_offset; | |
1301 | td->io_skip_bytes += td->o.zone_skip; | |
1302 | } | |
1303 | } | |
1304 | ||
bfbdd35b BVA |
1305 | /** |
1306 | * zbd_adjust_block - adjust the offset and length as necessary for ZBD drives | |
1307 | * @td: FIO thread data. | |
1308 | * @io_u: FIO I/O unit. | |
1309 | * | |
1310 | * Locking strategy: returns with z->mutex locked if and only if z refers | |
1311 | * to a sequential zone and if io_u_accept is returned. z is the zone that | |
1312 | * corresponds to io_u->offset at the end of this function. | |
1313 | */ | |
1314 | enum io_u_action zbd_adjust_block(struct thread_data *td, struct io_u *io_u) | |
1315 | { | |
1316 | const struct fio_file *f = io_u->file; | |
1317 | uint32_t zone_idx_b; | |
de65f7b7 | 1318 | struct fio_zone_info *zb, *zl, *orig_zb; |
bfbdd35b BVA |
1319 | uint32_t orig_len = io_u->buflen; |
1320 | uint32_t min_bs = td->o.min_bs[io_u->ddir]; | |
1321 | uint64_t new_len; | |
1322 | int64_t range; | |
1323 | ||
1324 | if (!f->zbd_info) | |
1325 | return io_u_accept; | |
1326 | ||
1327 | assert(is_valid_offset(f, io_u->offset)); | |
1328 | assert(io_u->buflen); | |
1329 | zone_idx_b = zbd_zone_idx(f, io_u->offset); | |
1330 | zb = &f->zbd_info->zone_info[zone_idx_b]; | |
de65f7b7 | 1331 | orig_zb = zb; |
bfbdd35b BVA |
1332 | |
1333 | /* Accept the I/O offset for conventional zones. */ | |
1334 | if (zb->type == BLK_ZONE_TYPE_CONVENTIONAL) | |
1335 | return io_u_accept; | |
1336 | ||
1337 | /* | |
1338 | * Accept the I/O offset for reads if reading beyond the write pointer | |
1339 | * is enabled. | |
1340 | */ | |
1341 | if (zb->cond != BLK_ZONE_COND_OFFLINE && | |
1342 | io_u->ddir == DDIR_READ && td->o.read_beyond_wp) | |
1343 | return io_u_accept; | |
1344 | ||
615555bb BVA |
1345 | zbd_check_swd(f); |
1346 | ||
6f0c6085 DLM |
1347 | /* |
1348 | * Lock the io_u target zone. The zone will be unlocked if io_u offset | |
1349 | * is changed or when io_u completes and zbd_put_io() executed. | |
1350 | * To avoid multiple jobs doing asynchronous I/Os from deadlocking each | |
1351 | * other waiting for zone locks when building an io_u batch, first | |
1352 | * only trylock the zone. If the zone is already locked by another job, | |
1353 | * process the currently queued I/Os so that I/O progress is made and | |
1354 | * zones unlocked. | |
1355 | */ | |
1356 | if (pthread_mutex_trylock(&zb->mutex) != 0) { | |
1357 | if (!td_ioengine_flagged(td, FIO_SYNCIO)) | |
1358 | io_u_quiesce(td); | |
1359 | pthread_mutex_lock(&zb->mutex); | |
1360 | } | |
1361 | ||
bfbdd35b BVA |
1362 | switch (io_u->ddir) { |
1363 | case DDIR_READ: | |
1364 | if (td->runstate == TD_VERIFYING) { | |
59b07544 | 1365 | zb = zbd_replay_write_order(td, io_u, zb); |
bfbdd35b BVA |
1366 | goto accept; |
1367 | } | |
1368 | /* | |
de65f7b7 DLM |
1369 | * Check that there is enough written data in the zone to do an |
1370 | * I/O of at least min_bs B. If there isn't, find a new zone for | |
1371 | * the I/O. | |
bfbdd35b BVA |
1372 | */ |
1373 | range = zb->cond != BLK_ZONE_COND_OFFLINE ? | |
ee3696bd | 1374 | zb->wp - zb->start : 0; |
de65f7b7 | 1375 | if (range < min_bs || |
ee3696bd | 1376 | ((!td_random(td)) && (io_u->offset + min_bs > zb->wp))) { |
bfbdd35b BVA |
1377 | pthread_mutex_unlock(&zb->mutex); |
1378 | zl = &f->zbd_info->zone_info[zbd_zone_idx(f, | |
1379 | f->file_offset + f->io_size)]; | |
1380 | zb = zbd_find_zone(td, io_u, zb, zl); | |
1381 | if (!zb) { | |
1382 | dprint(FD_ZBD, | |
1383 | "%s: zbd_find_zone(%lld, %llu) failed\n", | |
1384 | f->file_name, io_u->offset, | |
1385 | io_u->buflen); | |
1386 | goto eof; | |
1387 | } | |
de65f7b7 DLM |
1388 | /* |
1389 | * zbd_find_zone() returned a zone with a range of at | |
1390 | * least min_bs. | |
1391 | */ | |
ee3696bd | 1392 | range = zb->wp - zb->start; |
de65f7b7 DLM |
1393 | assert(range >= min_bs); |
1394 | ||
1395 | if (!td_random(td)) | |
ee3696bd | 1396 | io_u->offset = zb->start; |
bfbdd35b | 1397 | } |
de65f7b7 DLM |
1398 | /* |
1399 | * Make sure the I/O is within the zone valid data range while | |
1400 | * maximizing the I/O size and preserving randomness. | |
1401 | */ | |
1402 | if (range <= io_u->buflen) | |
ee3696bd | 1403 | io_u->offset = zb->start; |
de65f7b7 | 1404 | else if (td_random(td)) |
ee3696bd DLM |
1405 | io_u->offset = zb->start + |
1406 | ((io_u->offset - orig_zb->start) % | |
de65f7b7 DLM |
1407 | (range - io_u->buflen)) / min_bs * min_bs; |
1408 | /* | |
1409 | * Make sure the I/O does not cross over the zone wp position. | |
1410 | */ | |
1411 | new_len = min((unsigned long long)io_u->buflen, | |
ee3696bd | 1412 | (unsigned long long)(zb->wp - io_u->offset)); |
de65f7b7 DLM |
1413 | new_len = new_len / min_bs * min_bs; |
1414 | if (new_len < io_u->buflen) { | |
1415 | io_u->buflen = new_len; | |
1416 | dprint(FD_IO, "Changed length from %u into %llu\n", | |
1417 | orig_len, io_u->buflen); | |
bfbdd35b | 1418 | } |
ee3696bd DLM |
1419 | assert(zb->start <= io_u->offset); |
1420 | assert(io_u->offset + io_u->buflen <= zb->wp); | |
bfbdd35b BVA |
1421 | goto accept; |
1422 | case DDIR_WRITE: | |
ee3696bd | 1423 | if (io_u->buflen > f->zbd_info->zone_size) |
bfbdd35b | 1424 | goto eof; |
59b07544 BVA |
1425 | if (!zbd_open_zone(td, io_u, zone_idx_b)) { |
1426 | pthread_mutex_unlock(&zb->mutex); | |
1427 | zb = zbd_convert_to_open_zone(td, io_u); | |
1428 | if (!zb) | |
1429 | goto eof; | |
1430 | zone_idx_b = zb - f->zbd_info->zone_info; | |
1431 | } | |
a7c2b6fc BVA |
1432 | /* Check whether the zone reset threshold has been exceeded */ |
1433 | if (td->o.zrf.u.f) { | |
ee3696bd | 1434 | if (f->zbd_info->sectors_with_data >= |
a7c2b6fc BVA |
1435 | f->io_size * td->o.zrt.u.f && |
1436 | zbd_dec_and_reset_write_cnt(td, f)) { | |
1437 | zb->reset_zone = 1; | |
1438 | } | |
1439 | } | |
bfbdd35b BVA |
1440 | /* Reset the zone pointer if necessary */ |
1441 | if (zb->reset_zone || zbd_zone_full(f, zb, min_bs)) { | |
1442 | assert(td->o.verify == VERIFY_NONE); | |
1443 | /* | |
1444 | * Since previous write requests may have been submitted | |
1445 | * asynchronously and since we will submit the zone | |
1446 | * reset synchronously, wait until previously submitted | |
1447 | * write requests have completed before issuing a | |
1448 | * zone reset. | |
1449 | */ | |
1450 | io_u_quiesce(td); | |
1451 | zb->reset_zone = 0; | |
1452 | if (zbd_reset_zone(td, f, zb) < 0) | |
1453 | goto eof; | |
1454 | } | |
1455 | /* Make writes occur at the write pointer */ | |
1456 | assert(!zbd_zone_full(f, zb, min_bs)); | |
ee3696bd | 1457 | io_u->offset = zb->wp; |
bfbdd35b BVA |
1458 | if (!is_valid_offset(f, io_u->offset)) { |
1459 | dprint(FD_ZBD, "Dropped request with offset %llu\n", | |
1460 | io_u->offset); | |
1461 | goto eof; | |
1462 | } | |
1463 | /* | |
1464 | * Make sure that the buflen is a multiple of the minimal | |
1465 | * block size. Give up if shrinking would make the request too | |
1466 | * small. | |
1467 | */ | |
1468 | new_len = min((unsigned long long)io_u->buflen, | |
ee3696bd | 1469 | (zb + 1)->start - io_u->offset); |
bfbdd35b BVA |
1470 | new_len = new_len / min_bs * min_bs; |
1471 | if (new_len == io_u->buflen) | |
1472 | goto accept; | |
1473 | if (new_len >= min_bs) { | |
1474 | io_u->buflen = new_len; | |
1475 | dprint(FD_IO, "Changed length from %u into %llu\n", | |
1476 | orig_len, io_u->buflen); | |
1477 | goto accept; | |
1478 | } | |
1479 | log_err("Zone remainder %lld smaller than minimum block size %d\n", | |
ee3696bd | 1480 | ((zb + 1)->start - io_u->offset), |
bfbdd35b BVA |
1481 | min_bs); |
1482 | goto eof; | |
1483 | case DDIR_TRIM: | |
1484 | /* fall-through */ | |
1485 | case DDIR_SYNC: | |
1486 | case DDIR_DATASYNC: | |
1487 | case DDIR_SYNC_FILE_RANGE: | |
1488 | case DDIR_WAIT: | |
1489 | case DDIR_LAST: | |
1490 | case DDIR_INVAL: | |
1491 | goto accept; | |
1492 | } | |
1493 | ||
1494 | assert(false); | |
1495 | ||
1496 | accept: | |
1497 | assert(zb); | |
1498 | assert(zb->cond != BLK_ZONE_COND_OFFLINE); | |
d9ed3e63 DLM |
1499 | assert(!io_u->zbd_queue_io); |
1500 | assert(!io_u->zbd_put_io); | |
1501 | io_u->zbd_queue_io = zbd_queue_io; | |
1502 | io_u->zbd_put_io = zbd_put_io; | |
bfbdd35b BVA |
1503 | return io_u_accept; |
1504 | ||
1505 | eof: | |
1506 | if (zb) | |
1507 | pthread_mutex_unlock(&zb->mutex); | |
1508 | return io_u_eof; | |
1509 | } | |
fd5d733f BVA |
1510 | |
1511 | /* Return a string with ZBD statistics */ | |
1512 | char *zbd_write_status(const struct thread_stat *ts) | |
1513 | { | |
1514 | char *res; | |
1515 | ||
a0c84dd4 | 1516 | if (asprintf(&res, "; %llu zone resets", (unsigned long long) ts->nr_zone_resets) < 0) |
fd5d733f BVA |
1517 | return NULL; |
1518 | return res; | |
1519 | } |