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> | |
bfbdd35b | 10 | #include <fcntl.h> |
bfbdd35b BVA |
11 | #include <sys/stat.h> |
12 | #include <unistd.h> | |
f5bff36e | 13 | |
cf42d79e | 14 | #include "os/os.h" |
bfbdd35b BVA |
15 | #include "file.h" |
16 | #include "fio.h" | |
17 | #include "lib/pow2.h" | |
18 | #include "log.h" | |
f5bff36e | 19 | #include "oslib/asprintf.h" |
bfbdd35b BVA |
20 | #include "smalloc.h" |
21 | #include "verify.h" | |
22 | #include "zbd.h" | |
23 | ||
b7694961 DLM |
24 | /** |
25 | * zbd_get_zoned_model - Get a device zoned model | |
26 | * @td: FIO thread data | |
27 | * @f: FIO file for which to get model information | |
28 | */ | |
29 | int zbd_get_zoned_model(struct thread_data *td, struct fio_file *f, | |
30 | enum zbd_zoned_model *model) | |
31 | { | |
32 | int ret; | |
33 | ||
6c5b11d3 DLM |
34 | if (td->io_ops && td->io_ops->get_zoned_model) |
35 | ret = td->io_ops->get_zoned_model(td, f, model); | |
36 | else | |
37 | ret = blkzoned_get_zoned_model(td, f, model); | |
b7694961 DLM |
38 | if (ret < 0) { |
39 | td_verror(td, errno, "get zoned model failed"); | |
40 | log_err("%s: get zoned model failed (%d).\n", | |
41 | f->file_name, errno); | |
42 | } | |
43 | ||
44 | return ret; | |
45 | } | |
46 | ||
47 | /** | |
48 | * zbd_report_zones - Get zone information | |
49 | * @td: FIO thread data. | |
50 | * @f: FIO file for which to get zone information | |
51 | * @offset: offset from which to report zones | |
52 | * @zones: Array of struct zbd_zone | |
53 | * @nr_zones: Size of @zones array | |
54 | * | |
55 | * Get zone information into @zones starting from the zone at offset @offset | |
56 | * for the device specified by @f. | |
57 | * | |
58 | * Returns the number of zones reported upon success and a negative error code | |
59 | * upon failure. If the zone report is empty, always assume an error (device | |
60 | * problem) and return -EIO. | |
61 | */ | |
62 | int zbd_report_zones(struct thread_data *td, struct fio_file *f, | |
63 | uint64_t offset, struct zbd_zone *zones, | |
64 | unsigned int nr_zones) | |
65 | { | |
66 | int ret; | |
67 | ||
6c5b11d3 DLM |
68 | if (td->io_ops && td->io_ops->report_zones) |
69 | ret = td->io_ops->report_zones(td, f, offset, zones, nr_zones); | |
70 | else | |
71 | ret = blkzoned_report_zones(td, f, offset, zones, nr_zones); | |
b7694961 DLM |
72 | if (ret < 0) { |
73 | td_verror(td, errno, "report zones failed"); | |
74 | log_err("%s: report zones from sector %llu failed (%d).\n", | |
75 | f->file_name, (unsigned long long)offset >> 9, errno); | |
76 | } else if (ret == 0) { | |
77 | td_verror(td, errno, "Empty zone report"); | |
78 | log_err("%s: report zones from sector %llu is empty.\n", | |
79 | f->file_name, (unsigned long long)offset >> 9); | |
80 | ret = -EIO; | |
81 | } | |
82 | ||
83 | return ret; | |
84 | } | |
85 | ||
86 | /** | |
87 | * zbd_reset_wp - reset the write pointer of a range of zones | |
88 | * @td: FIO thread data. | |
89 | * @f: FIO file for which to reset zones | |
90 | * @offset: Starting offset of the first zone to reset | |
91 | * @length: Length of the range of zones to reset | |
92 | * | |
93 | * Reset the write pointer of all zones in the range @offset...@offset+@length. | |
94 | * Returns 0 upon success and a negative error code upon failure. | |
95 | */ | |
96 | int zbd_reset_wp(struct thread_data *td, struct fio_file *f, | |
97 | uint64_t offset, uint64_t length) | |
98 | { | |
99 | int ret; | |
100 | ||
6c5b11d3 DLM |
101 | if (td->io_ops && td->io_ops->reset_wp) |
102 | ret = td->io_ops->reset_wp(td, f, offset, length); | |
103 | else | |
104 | ret = blkzoned_reset_wp(td, f, offset, length); | |
b7694961 DLM |
105 | if (ret < 0) { |
106 | td_verror(td, errno, "resetting wp failed"); | |
107 | log_err("%s: resetting wp for %llu sectors at sector %llu failed (%d).\n", | |
108 | f->file_name, (unsigned long long)length >> 9, | |
109 | (unsigned long long)offset >> 9, errno); | |
110 | } | |
111 | ||
112 | return ret; | |
113 | } | |
114 | ||
bfbdd35b BVA |
115 | /** |
116 | * zbd_zone_idx - convert an offset into a zone number | |
117 | * @f: file pointer. | |
118 | * @offset: offset in bytes. If this offset is in the first zone_size bytes | |
119 | * past the disk size then the index of the sentinel is returned. | |
120 | */ | |
121 | static uint32_t zbd_zone_idx(const struct fio_file *f, uint64_t offset) | |
122 | { | |
123 | uint32_t zone_idx; | |
124 | ||
cd775e06 | 125 | if (f->zbd_info->zone_size_log2 > 0) |
bfbdd35b BVA |
126 | zone_idx = offset >> f->zbd_info->zone_size_log2; |
127 | else | |
ee3696bd | 128 | zone_idx = offset / f->zbd_info->zone_size; |
bfbdd35b BVA |
129 | |
130 | return min(zone_idx, f->zbd_info->nr_zones); | |
131 | } | |
132 | ||
b7694961 DLM |
133 | /** |
134 | * zbd_zone_swr - Test whether a zone requires sequential writes | |
135 | * @z: zone info pointer. | |
136 | */ | |
137 | static inline bool zbd_zone_swr(struct fio_zone_info *z) | |
138 | { | |
139 | return z->type == ZBD_ZONE_TYPE_SWR; | |
140 | } | |
141 | ||
bfbdd35b BVA |
142 | /** |
143 | * zbd_zone_full - verify whether a minimum number of bytes remain in a zone | |
144 | * @f: file pointer. | |
145 | * @z: zone info pointer. | |
146 | * @required: minimum number of bytes that must remain in a zone. | |
147 | * | |
148 | * The caller must hold z->mutex. | |
149 | */ | |
150 | static bool zbd_zone_full(const struct fio_file *f, struct fio_zone_info *z, | |
151 | uint64_t required) | |
152 | { | |
153 | assert((required & 511) == 0); | |
154 | ||
b7694961 | 155 | return zbd_zone_swr(z) && |
ee3696bd | 156 | z->wp + required > z->start + f->zbd_info->zone_size; |
bfbdd35b BVA |
157 | } |
158 | ||
1f57803b DLM |
159 | static void zone_lock(struct thread_data *td, struct fio_zone_info *z) |
160 | { | |
161 | /* | |
162 | * Lock the io_u target zone. The zone will be unlocked if io_u offset | |
163 | * is changed or when io_u completes and zbd_put_io() executed. | |
164 | * To avoid multiple jobs doing asynchronous I/Os from deadlocking each | |
165 | * other waiting for zone locks when building an io_u batch, first | |
166 | * only trylock the zone. If the zone is already locked by another job, | |
167 | * process the currently queued I/Os so that I/O progress is made and | |
168 | * zones unlocked. | |
169 | */ | |
170 | if (pthread_mutex_trylock(&z->mutex) != 0) { | |
171 | if (!td_ioengine_flagged(td, FIO_SYNCIO)) | |
172 | io_u_quiesce(td); | |
173 | pthread_mutex_lock(&z->mutex); | |
174 | } | |
175 | } | |
176 | ||
bfbdd35b BVA |
177 | static bool is_valid_offset(const struct fio_file *f, uint64_t offset) |
178 | { | |
179 | return (uint64_t)(offset - f->file_offset) < f->io_size; | |
180 | } | |
181 | ||
182 | /* Verify whether direct I/O is used for all host-managed zoned drives. */ | |
183 | static bool zbd_using_direct_io(void) | |
184 | { | |
185 | struct thread_data *td; | |
186 | struct fio_file *f; | |
187 | int i, j; | |
188 | ||
189 | for_each_td(td, i) { | |
190 | if (td->o.odirect || !(td->o.td_ddir & TD_DDIR_WRITE)) | |
191 | continue; | |
192 | for_each_file(td, f, j) { | |
193 | if (f->zbd_info && | |
b7694961 | 194 | f->zbd_info->model == ZBD_HOST_MANAGED) |
bfbdd35b BVA |
195 | return false; |
196 | } | |
197 | } | |
198 | ||
199 | return true; | |
200 | } | |
201 | ||
202 | /* Whether or not the I/O range for f includes one or more sequential zones */ | |
203 | static bool zbd_is_seq_job(struct fio_file *f) | |
204 | { | |
205 | uint32_t zone_idx, zone_idx_b, zone_idx_e; | |
206 | ||
207 | assert(f->zbd_info); | |
208 | if (f->io_size == 0) | |
209 | return false; | |
210 | zone_idx_b = zbd_zone_idx(f, f->file_offset); | |
211 | zone_idx_e = zbd_zone_idx(f, f->file_offset + f->io_size - 1); | |
212 | for (zone_idx = zone_idx_b; zone_idx <= zone_idx_e; zone_idx++) | |
b7694961 | 213 | if (zbd_zone_swr(&f->zbd_info->zone_info[zone_idx])) |
bfbdd35b BVA |
214 | return true; |
215 | ||
216 | return false; | |
217 | } | |
218 | ||
219 | /* | |
220 | * Verify whether offset and size parameters are aligned with zone boundaries. | |
221 | */ | |
222 | static bool zbd_verify_sizes(void) | |
223 | { | |
224 | const struct fio_zone_info *z; | |
225 | struct thread_data *td; | |
226 | struct fio_file *f; | |
227 | uint64_t new_offset, new_end; | |
228 | uint32_t zone_idx; | |
229 | int i, j; | |
230 | ||
231 | for_each_td(td, i) { | |
232 | for_each_file(td, f, j) { | |
233 | if (!f->zbd_info) | |
234 | continue; | |
235 | if (f->file_offset >= f->real_file_size) | |
236 | continue; | |
237 | if (!zbd_is_seq_job(f)) | |
238 | continue; | |
4d37720a | 239 | |
fc52e449 DLM |
240 | if (!td->o.zone_size) { |
241 | td->o.zone_size = f->zbd_info->zone_size; | |
242 | if (!td->o.zone_size) { | |
243 | log_err("%s: invalid 0 zone size\n", | |
244 | f->file_name); | |
245 | return false; | |
246 | } | |
971d6a22 DLM |
247 | } else if (td->o.zone_size != f->zbd_info->zone_size) { |
248 | log_err("%s: job parameter zonesize %llu does not match disk zone size %llu.\n", | |
249 | f->file_name, (unsigned long long) td->o.zone_size, | |
250 | (unsigned long long) f->zbd_info->zone_size); | |
251 | return false; | |
fc52e449 DLM |
252 | } |
253 | ||
4d37720a DLM |
254 | if (td->o.zone_skip && |
255 | (td->o.zone_skip < td->o.zone_size || | |
256 | td->o.zone_skip % td->o.zone_size)) { | |
257 | log_err("%s: zoneskip %llu is not a multiple of the device zone size %llu.\n", | |
258 | f->file_name, (unsigned long long) td->o.zone_skip, | |
259 | (unsigned long long) td->o.zone_size); | |
260 | return false; | |
261 | } | |
262 | ||
bfbdd35b BVA |
263 | zone_idx = zbd_zone_idx(f, f->file_offset); |
264 | z = &f->zbd_info->zone_info[zone_idx]; | |
ee3696bd DLM |
265 | if (f->file_offset != z->start) { |
266 | new_offset = (z+1)->start; | |
bfbdd35b BVA |
267 | if (new_offset >= f->file_offset + f->io_size) { |
268 | log_info("%s: io_size must be at least one zone\n", | |
269 | f->file_name); | |
270 | return false; | |
271 | } | |
a0c84dd4 JA |
272 | log_info("%s: rounded up offset from %llu to %llu\n", |
273 | f->file_name, (unsigned long long) f->file_offset, | |
274 | (unsigned long long) new_offset); | |
bfbdd35b BVA |
275 | f->io_size -= (new_offset - f->file_offset); |
276 | f->file_offset = new_offset; | |
277 | } | |
278 | zone_idx = zbd_zone_idx(f, f->file_offset + f->io_size); | |
279 | z = &f->zbd_info->zone_info[zone_idx]; | |
ee3696bd | 280 | new_end = z->start; |
bfbdd35b BVA |
281 | if (f->file_offset + f->io_size != new_end) { |
282 | if (new_end <= f->file_offset) { | |
283 | log_info("%s: io_size must be at least one zone\n", | |
284 | f->file_name); | |
285 | return false; | |
286 | } | |
a0c84dd4 JA |
287 | log_info("%s: rounded down io_size from %llu to %llu\n", |
288 | f->file_name, (unsigned long long) f->io_size, | |
289 | (unsigned long long) new_end - f->file_offset); | |
bfbdd35b BVA |
290 | f->io_size = new_end - f->file_offset; |
291 | } | |
292 | } | |
293 | } | |
294 | ||
295 | return true; | |
296 | } | |
297 | ||
298 | static bool zbd_verify_bs(void) | |
299 | { | |
300 | struct thread_data *td; | |
301 | struct fio_file *f; | |
302 | uint32_t zone_size; | |
303 | int i, j, k; | |
304 | ||
305 | for_each_td(td, i) { | |
306 | for_each_file(td, f, j) { | |
307 | if (!f->zbd_info) | |
308 | continue; | |
309 | zone_size = f->zbd_info->zone_size; | |
310 | for (k = 0; k < ARRAY_SIZE(td->o.bs); k++) { | |
311 | if (td->o.verify != VERIFY_NONE && | |
ee3696bd | 312 | zone_size % td->o.bs[k] != 0) { |
bfbdd35b BVA |
313 | log_info("%s: block size %llu is not a divisor of the zone size %d\n", |
314 | f->file_name, td->o.bs[k], | |
ee3696bd | 315 | zone_size); |
bfbdd35b BVA |
316 | return false; |
317 | } | |
318 | } | |
319 | } | |
320 | } | |
321 | return true; | |
322 | } | |
323 | ||
bfbdd35b BVA |
324 | static int ilog2(uint64_t i) |
325 | { | |
326 | int log = -1; | |
327 | ||
328 | while (i) { | |
329 | i >>= 1; | |
330 | log++; | |
331 | } | |
332 | return log; | |
333 | } | |
334 | ||
335 | /* | |
336 | * Initialize f->zbd_info for devices that are not zoned block devices. This | |
337 | * allows to execute a ZBD workload against a non-ZBD device. | |
338 | */ | |
339 | static int init_zone_info(struct thread_data *td, struct fio_file *f) | |
340 | { | |
341 | uint32_t nr_zones; | |
342 | struct fio_zone_info *p; | |
a4b7f12b | 343 | uint64_t zone_size = td->o.zone_size; |
bfbdd35b BVA |
344 | struct zoned_block_device_info *zbd_info = NULL; |
345 | pthread_mutexattr_t attr; | |
346 | int i; | |
347 | ||
a4b7f12b DLM |
348 | if (zone_size == 0) { |
349 | log_err("%s: Specifying the zone size is mandatory for regular block devices with --zonemode=zbd\n\n", | |
350 | f->file_name); | |
351 | return 1; | |
352 | } | |
353 | ||
354 | if (zone_size < 512) { | |
355 | log_err("%s: zone size must be at least 512 bytes for --zonemode=zbd\n\n", | |
356 | f->file_name); | |
357 | return 1; | |
358 | } | |
359 | ||
ee3696bd | 360 | nr_zones = (f->real_file_size + zone_size - 1) / zone_size; |
bfbdd35b BVA |
361 | zbd_info = scalloc(1, sizeof(*zbd_info) + |
362 | (nr_zones + 1) * sizeof(zbd_info->zone_info[0])); | |
363 | if (!zbd_info) | |
364 | return -ENOMEM; | |
365 | ||
366 | pthread_mutexattr_init(&attr); | |
367 | pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | |
368 | pthread_mutexattr_setpshared(&attr, true); | |
369 | pthread_mutex_init(&zbd_info->mutex, &attr); | |
370 | zbd_info->refcount = 1; | |
371 | p = &zbd_info->zone_info[0]; | |
372 | for (i = 0; i < nr_zones; i++, p++) { | |
373 | pthread_mutex_init(&p->mutex, &attr); | |
374 | p->start = i * zone_size; | |
375 | p->wp = p->start + zone_size; | |
b7694961 DLM |
376 | p->type = ZBD_ZONE_TYPE_SWR; |
377 | p->cond = ZBD_ZONE_COND_EMPTY; | |
bfbdd35b BVA |
378 | } |
379 | /* a sentinel */ | |
380 | p->start = nr_zones * zone_size; | |
381 | ||
382 | f->zbd_info = zbd_info; | |
383 | f->zbd_info->zone_size = zone_size; | |
384 | f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ? | |
ebc403fe | 385 | ilog2(zone_size) : 0; |
bfbdd35b BVA |
386 | f->zbd_info->nr_zones = nr_zones; |
387 | pthread_mutexattr_destroy(&attr); | |
388 | return 0; | |
389 | } | |
390 | ||
391 | /* | |
b7694961 DLM |
392 | * Maximum number of zones to report in one operation. |
393 | */ | |
394 | #define ZBD_REPORT_MAX_ZONES 8192U | |
395 | ||
396 | /* | |
397 | * Parse the device zone report and store it in f->zbd_info. Must be called | |
398 | * only for devices that are zoned, namely those with a model != ZBD_NONE. | |
bfbdd35b BVA |
399 | */ |
400 | static int parse_zone_info(struct thread_data *td, struct fio_file *f) | |
401 | { | |
b7694961 DLM |
402 | int nr_zones, nrz; |
403 | struct zbd_zone *zones, *z; | |
bfbdd35b | 404 | struct fio_zone_info *p; |
b7694961 | 405 | uint64_t zone_size, offset; |
bfbdd35b BVA |
406 | struct zoned_block_device_info *zbd_info = NULL; |
407 | pthread_mutexattr_t attr; | |
b7694961 | 408 | int i, j, ret = 0; |
bfbdd35b BVA |
409 | |
410 | pthread_mutexattr_init(&attr); | |
411 | pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | |
412 | pthread_mutexattr_setpshared(&attr, true); | |
413 | ||
b7694961 DLM |
414 | zones = calloc(ZBD_REPORT_MAX_ZONES, sizeof(struct zbd_zone)); |
415 | if (!zones) | |
bfbdd35b BVA |
416 | goto out; |
417 | ||
b7694961 DLM |
418 | nrz = zbd_report_zones(td, f, 0, zones, ZBD_REPORT_MAX_ZONES); |
419 | if (nrz < 0) { | |
420 | ret = nrz; | |
421 | log_info("fio: report zones (offset 0) failed for %s (%d).\n", | |
422 | f->file_name, -ret); | |
423 | goto out; | |
bfbdd35b BVA |
424 | } |
425 | ||
b7694961 | 426 | zone_size = zones[0].len; |
ee3696bd | 427 | nr_zones = (f->real_file_size + zone_size - 1) / zone_size; |
bfbdd35b BVA |
428 | |
429 | if (td->o.zone_size == 0) { | |
ee3696bd DLM |
430 | td->o.zone_size = zone_size; |
431 | } else if (td->o.zone_size != zone_size) { | |
4580ff92 DLM |
432 | log_err("fio: %s job parameter zonesize %llu does not match disk zone size %llu.\n", |
433 | f->file_name, (unsigned long long) td->o.zone_size, | |
a0c84dd4 | 434 | (unsigned long long) zone_size); |
bfbdd35b | 435 | ret = -EINVAL; |
b7694961 | 436 | goto out; |
bfbdd35b BVA |
437 | } |
438 | ||
a0c84dd4 JA |
439 | dprint(FD_ZBD, "Device %s has %d zones of size %llu KB\n", f->file_name, |
440 | nr_zones, (unsigned long long) zone_size / 1024); | |
bfbdd35b BVA |
441 | |
442 | zbd_info = scalloc(1, sizeof(*zbd_info) + | |
443 | (nr_zones + 1) * sizeof(zbd_info->zone_info[0])); | |
444 | ret = -ENOMEM; | |
445 | if (!zbd_info) | |
b7694961 | 446 | goto out; |
bfbdd35b BVA |
447 | pthread_mutex_init(&zbd_info->mutex, &attr); |
448 | zbd_info->refcount = 1; | |
449 | p = &zbd_info->zone_info[0]; | |
b7694961 DLM |
450 | for (offset = 0, j = 0; j < nr_zones;) { |
451 | z = &zones[0]; | |
452 | for (i = 0; i < nrz; i++, j++, z++, p++) { | |
bfbdd35b | 453 | pthread_mutex_init(&p->mutex, &attr); |
b7694961 | 454 | p->start = z->start; |
bfbdd35b | 455 | switch (z->cond) { |
b7694961 DLM |
456 | case ZBD_ZONE_COND_NOT_WP: |
457 | case ZBD_ZONE_COND_FULL: | |
ee3696bd | 458 | p->wp = p->start + zone_size; |
bfbdd35b BVA |
459 | break; |
460 | default: | |
461 | assert(z->start <= z->wp); | |
b7694961 DLM |
462 | assert(z->wp <= z->start + zone_size); |
463 | p->wp = z->wp; | |
bfbdd35b BVA |
464 | break; |
465 | } | |
466 | p->type = z->type; | |
467 | p->cond = z->cond; | |
468 | if (j > 0 && p->start != p[-1].start + zone_size) { | |
469 | log_info("%s: invalid zone data\n", | |
470 | f->file_name); | |
471 | ret = -EINVAL; | |
b7694961 | 472 | goto out; |
bfbdd35b BVA |
473 | } |
474 | } | |
475 | z--; | |
b7694961 | 476 | offset = z->start + z->len; |
bfbdd35b BVA |
477 | if (j >= nr_zones) |
478 | break; | |
b7694961 DLM |
479 | nrz = zbd_report_zones(td, f, offset, |
480 | zones, ZBD_REPORT_MAX_ZONES); | |
481 | if (nrz < 0) { | |
482 | ret = nrz; | |
483 | log_info("fio: report zones (offset %llu) failed for %s (%d).\n", | |
484 | (unsigned long long)offset, | |
485 | f->file_name, -ret); | |
486 | goto out; | |
bfbdd35b BVA |
487 | } |
488 | } | |
b7694961 | 489 | |
bfbdd35b | 490 | /* a sentinel */ |
b7694961 | 491 | zbd_info->zone_info[nr_zones].start = offset; |
bfbdd35b BVA |
492 | |
493 | f->zbd_info = zbd_info; | |
494 | f->zbd_info->zone_size = zone_size; | |
495 | f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ? | |
ebc403fe | 496 | ilog2(zone_size) : 0; |
bfbdd35b BVA |
497 | f->zbd_info->nr_zones = nr_zones; |
498 | zbd_info = NULL; | |
499 | ret = 0; | |
500 | ||
bfbdd35b | 501 | out: |
b7694961 DLM |
502 | sfree(zbd_info); |
503 | free(zones); | |
bfbdd35b BVA |
504 | pthread_mutexattr_destroy(&attr); |
505 | return ret; | |
506 | } | |
507 | ||
508 | /* | |
509 | * Allocate zone information and store it into f->zbd_info if zonemode=zbd. | |
510 | * | |
511 | * Returns 0 upon success and a negative error code upon failure. | |
512 | */ | |
379e5f09 | 513 | static int zbd_create_zone_info(struct thread_data *td, struct fio_file *f) |
bfbdd35b | 514 | { |
b7694961 DLM |
515 | enum zbd_zoned_model zbd_model; |
516 | int ret; | |
bfbdd35b BVA |
517 | |
518 | assert(td->o.zone_mode == ZONE_MODE_ZBD); | |
519 | ||
b7694961 DLM |
520 | ret = zbd_get_zoned_model(td, f, &zbd_model); |
521 | if (ret) | |
522 | return ret; | |
523 | ||
bfbdd35b | 524 | switch (zbd_model) { |
b7694961 DLM |
525 | case ZBD_IGNORE: |
526 | return 0; | |
527 | case ZBD_HOST_AWARE: | |
528 | case ZBD_HOST_MANAGED: | |
bfbdd35b BVA |
529 | ret = parse_zone_info(td, f); |
530 | break; | |
b7694961 | 531 | case ZBD_NONE: |
bfbdd35b BVA |
532 | ret = init_zone_info(td, f); |
533 | break; | |
b7694961 DLM |
534 | default: |
535 | td_verror(td, EINVAL, "Unsupported zoned model"); | |
536 | log_err("Unsupported zoned model\n"); | |
537 | return -EINVAL; | |
bfbdd35b | 538 | } |
b7694961 | 539 | |
bfbdd35b BVA |
540 | if (ret == 0) |
541 | f->zbd_info->model = zbd_model; | |
542 | return ret; | |
543 | } | |
544 | ||
545 | void zbd_free_zone_info(struct fio_file *f) | |
546 | { | |
547 | uint32_t refcount; | |
548 | ||
549 | if (!f->zbd_info) | |
550 | return; | |
551 | ||
552 | pthread_mutex_lock(&f->zbd_info->mutex); | |
553 | refcount = --f->zbd_info->refcount; | |
554 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
555 | ||
556 | assert((int32_t)refcount >= 0); | |
557 | if (refcount == 0) | |
558 | sfree(f->zbd_info); | |
559 | f->zbd_info = NULL; | |
560 | } | |
561 | ||
562 | /* | |
563 | * Initialize f->zbd_info. | |
564 | * | |
565 | * Returns 0 upon success and a negative error code upon failure. | |
566 | * | |
567 | * Note: this function can only work correctly if it is called before the first | |
568 | * fio fork() call. | |
569 | */ | |
570 | static int zbd_init_zone_info(struct thread_data *td, struct fio_file *file) | |
571 | { | |
572 | struct thread_data *td2; | |
573 | struct fio_file *f2; | |
574 | int i, j, ret; | |
575 | ||
576 | for_each_td(td2, i) { | |
577 | for_each_file(td2, f2, j) { | |
578 | if (td2 == td && f2 == file) | |
579 | continue; | |
580 | if (!f2->zbd_info || | |
581 | strcmp(f2->file_name, file->file_name) != 0) | |
582 | continue; | |
583 | file->zbd_info = f2->zbd_info; | |
584 | file->zbd_info->refcount++; | |
585 | return 0; | |
586 | } | |
587 | } | |
588 | ||
589 | ret = zbd_create_zone_info(td, file); | |
590 | if (ret < 0) | |
c5837eec | 591 | td_verror(td, -ret, "zbd_create_zone_info() failed"); |
bfbdd35b BVA |
592 | return ret; |
593 | } | |
594 | ||
595 | int zbd_init(struct thread_data *td) | |
596 | { | |
597 | struct fio_file *f; | |
598 | int i; | |
599 | ||
600 | for_each_file(td, f, i) { | |
a4b7f12b | 601 | if (zbd_init_zone_info(td, f)) |
bfbdd35b | 602 | return 1; |
bfbdd35b BVA |
603 | } |
604 | ||
605 | if (!zbd_using_direct_io()) { | |
606 | log_err("Using direct I/O is mandatory for writing to ZBD drives\n\n"); | |
607 | return 1; | |
608 | } | |
609 | ||
610 | if (!zbd_verify_sizes()) | |
611 | return 1; | |
612 | ||
613 | if (!zbd_verify_bs()) | |
614 | return 1; | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
619 | /** | |
620 | * zbd_reset_range - reset zones for a range of sectors | |
621 | * @td: FIO thread data. | |
622 | * @f: Fio file for which to reset zones | |
623 | * @sector: Starting sector in units of 512 bytes | |
624 | * @nr_sectors: Number of sectors in units of 512 bytes | |
625 | * | |
626 | * Returns 0 upon success and a negative error code upon failure. | |
627 | */ | |
b7694961 | 628 | static int zbd_reset_range(struct thread_data *td, struct fio_file *f, |
ee3696bd | 629 | uint64_t offset, uint64_t length) |
bfbdd35b | 630 | { |
bfbdd35b BVA |
631 | uint32_t zone_idx_b, zone_idx_e; |
632 | struct fio_zone_info *zb, *ze, *z; | |
633 | int ret = 0; | |
634 | ||
ee3696bd | 635 | assert(is_valid_offset(f, offset + length - 1)); |
b7694961 | 636 | |
bfbdd35b | 637 | switch (f->zbd_info->model) { |
b7694961 DLM |
638 | case ZBD_HOST_AWARE: |
639 | case ZBD_HOST_MANAGED: | |
640 | ret = zbd_reset_wp(td, f, offset, length); | |
641 | if (ret < 0) | |
bfbdd35b | 642 | return ret; |
bfbdd35b | 643 | break; |
b7694961 | 644 | default: |
bfbdd35b BVA |
645 | break; |
646 | } | |
647 | ||
ee3696bd | 648 | zone_idx_b = zbd_zone_idx(f, offset); |
bfbdd35b | 649 | zb = &f->zbd_info->zone_info[zone_idx_b]; |
ee3696bd | 650 | zone_idx_e = zbd_zone_idx(f, offset + length); |
bfbdd35b BVA |
651 | ze = &f->zbd_info->zone_info[zone_idx_e]; |
652 | for (z = zb; z < ze; z++) { | |
653 | pthread_mutex_lock(&z->mutex); | |
a7c2b6fc BVA |
654 | pthread_mutex_lock(&f->zbd_info->mutex); |
655 | f->zbd_info->sectors_with_data -= z->wp - z->start; | |
656 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
bfbdd35b BVA |
657 | z->wp = z->start; |
658 | z->verify_block = 0; | |
659 | pthread_mutex_unlock(&z->mutex); | |
660 | } | |
661 | ||
fd5d733f BVA |
662 | td->ts.nr_zone_resets += ze - zb; |
663 | ||
bfbdd35b BVA |
664 | return ret; |
665 | } | |
666 | ||
a0c84dd4 JA |
667 | static unsigned int zbd_zone_nr(struct zoned_block_device_info *zbd_info, |
668 | struct fio_zone_info *zone) | |
669 | { | |
089ddd95 | 670 | return zone - zbd_info->zone_info; |
a0c84dd4 JA |
671 | } |
672 | ||
bfbdd35b BVA |
673 | /** |
674 | * zbd_reset_zone - reset the write pointer of a single zone | |
675 | * @td: FIO thread data. | |
676 | * @f: FIO file associated with the disk for which to reset a write pointer. | |
677 | * @z: Zone to reset. | |
678 | * | |
679 | * Returns 0 upon success and a negative error code upon failure. | |
680 | */ | |
b7694961 | 681 | static int zbd_reset_zone(struct thread_data *td, struct fio_file *f, |
bfbdd35b BVA |
682 | struct fio_zone_info *z) |
683 | { | |
a0c84dd4 JA |
684 | dprint(FD_ZBD, "%s: resetting wp of zone %u.\n", f->file_name, |
685 | zbd_zone_nr(f->zbd_info, z)); | |
d60be7d5 DLM |
686 | |
687 | return zbd_reset_range(td, f, z->start, (z+1)->start - z->start); | |
bfbdd35b BVA |
688 | } |
689 | ||
690 | /* | |
691 | * Reset a range of zones. Returns 0 upon success and 1 upon failure. | |
692 | * @td: fio thread data. | |
693 | * @f: fio file for which to reset zones | |
694 | * @zb: first zone to reset. | |
695 | * @ze: first zone not to reset. | |
696 | * @all_zones: whether to reset all zones or only those zones for which the | |
697 | * write pointer is not a multiple of td->o.min_bs[DDIR_WRITE]. | |
698 | */ | |
699 | static int zbd_reset_zones(struct thread_data *td, struct fio_file *f, | |
700 | struct fio_zone_info *const zb, | |
701 | struct fio_zone_info *const ze, bool all_zones) | |
702 | { | |
4803b841 | 703 | struct fio_zone_info *z; |
ee3696bd | 704 | const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; |
bfbdd35b BVA |
705 | bool reset_wp; |
706 | int res = 0; | |
707 | ||
adc6adcb DLM |
708 | assert(min_bs); |
709 | ||
a0c84dd4 JA |
710 | dprint(FD_ZBD, "%s: examining zones %u .. %u\n", f->file_name, |
711 | zbd_zone_nr(f->zbd_info, zb), zbd_zone_nr(f->zbd_info, ze)); | |
bfbdd35b | 712 | for (z = zb; z < ze; z++) { |
b7694961 | 713 | if (!zbd_zone_swr(z)) |
1f57803b DLM |
714 | continue; |
715 | zone_lock(td, z); | |
716 | reset_wp = all_zones ? z->wp != z->start : | |
717 | (td->o.td_ddir & TD_DDIR_WRITE) && | |
718 | z->wp % min_bs != 0; | |
719 | if (reset_wp) { | |
720 | dprint(FD_ZBD, "%s: resetting zone %u\n", | |
721 | f->file_name, | |
722 | zbd_zone_nr(f->zbd_info, z)); | |
723 | if (zbd_reset_zone(td, f, z) < 0) | |
724 | res = 1; | |
bfbdd35b | 725 | } |
bfbdd35b | 726 | pthread_mutex_unlock(&z->mutex); |
4803b841 | 727 | } |
bfbdd35b BVA |
728 | |
729 | return res; | |
730 | } | |
731 | ||
a7c2b6fc BVA |
732 | /* |
733 | * Reset zbd_info.write_cnt, the counter that counts down towards the next | |
734 | * zone reset. | |
735 | */ | |
736 | static void zbd_reset_write_cnt(const struct thread_data *td, | |
737 | const struct fio_file *f) | |
738 | { | |
739 | assert(0 <= td->o.zrf.u.f && td->o.zrf.u.f <= 1); | |
740 | ||
741 | pthread_mutex_lock(&f->zbd_info->mutex); | |
742 | f->zbd_info->write_cnt = td->o.zrf.u.f ? | |
743 | min(1.0 / td->o.zrf.u.f, 0.0 + UINT_MAX) : UINT_MAX; | |
744 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
745 | } | |
746 | ||
747 | static bool zbd_dec_and_reset_write_cnt(const struct thread_data *td, | |
748 | const struct fio_file *f) | |
749 | { | |
750 | uint32_t write_cnt = 0; | |
751 | ||
752 | pthread_mutex_lock(&f->zbd_info->mutex); | |
753 | assert(f->zbd_info->write_cnt); | |
754 | if (f->zbd_info->write_cnt) | |
755 | write_cnt = --f->zbd_info->write_cnt; | |
756 | if (write_cnt == 0) | |
757 | zbd_reset_write_cnt(td, f); | |
758 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
759 | ||
760 | return write_cnt == 0; | |
761 | } | |
762 | ||
91d25131 BVA |
763 | enum swd_action { |
764 | CHECK_SWD, | |
765 | SET_SWD, | |
766 | }; | |
767 | ||
768 | /* Calculate the number of sectors with data (swd) and perform action 'a' */ | |
769 | static uint64_t zbd_process_swd(const struct fio_file *f, enum swd_action a) | |
615555bb | 770 | { |
615555bb BVA |
771 | struct fio_zone_info *zb, *ze, *z; |
772 | uint64_t swd = 0; | |
773 | ||
774 | zb = &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset)]; | |
775 | ze = &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset + | |
776 | f->io_size)]; | |
777 | for (z = zb; z < ze; z++) { | |
778 | pthread_mutex_lock(&z->mutex); | |
779 | swd += z->wp - z->start; | |
780 | } | |
781 | pthread_mutex_lock(&f->zbd_info->mutex); | |
91d25131 BVA |
782 | switch (a) { |
783 | case CHECK_SWD: | |
784 | assert(f->zbd_info->sectors_with_data == swd); | |
785 | break; | |
786 | case SET_SWD: | |
787 | f->zbd_info->sectors_with_data = swd; | |
788 | break; | |
789 | } | |
615555bb BVA |
790 | pthread_mutex_unlock(&f->zbd_info->mutex); |
791 | for (z = zb; z < ze; z++) | |
792 | pthread_mutex_unlock(&z->mutex); | |
91d25131 BVA |
793 | |
794 | return swd; | |
795 | } | |
796 | ||
797 | /* | |
798 | * The swd check is useful for debugging but takes too much time to leave | |
799 | * it enabled all the time. Hence it is disabled by default. | |
800 | */ | |
801 | static const bool enable_check_swd = false; | |
802 | ||
803 | /* Check whether the value of zbd_info.sectors_with_data is correct. */ | |
804 | static void zbd_check_swd(const struct fio_file *f) | |
805 | { | |
806 | if (!enable_check_swd) | |
807 | return; | |
808 | ||
809 | zbd_process_swd(f, CHECK_SWD); | |
810 | } | |
811 | ||
812 | static void zbd_init_swd(struct fio_file *f) | |
813 | { | |
814 | uint64_t swd; | |
815 | ||
409a4f29 NA |
816 | if (!enable_check_swd) |
817 | return; | |
818 | ||
91d25131 BVA |
819 | swd = zbd_process_swd(f, SET_SWD); |
820 | dprint(FD_ZBD, "%s(%s): swd = %" PRIu64 "\n", __func__, f->file_name, | |
821 | swd); | |
615555bb BVA |
822 | } |
823 | ||
bfbdd35b BVA |
824 | void zbd_file_reset(struct thread_data *td, struct fio_file *f) |
825 | { | |
91d25131 | 826 | struct fio_zone_info *zb, *ze; |
bfbdd35b BVA |
827 | uint32_t zone_idx_e; |
828 | ||
829 | if (!f->zbd_info) | |
830 | return; | |
831 | ||
832 | zb = &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset)]; | |
833 | zone_idx_e = zbd_zone_idx(f, f->file_offset + f->io_size); | |
834 | ze = &f->zbd_info->zone_info[zone_idx_e]; | |
91d25131 | 835 | zbd_init_swd(f); |
bfbdd35b BVA |
836 | /* |
837 | * If data verification is enabled reset the affected zones before | |
838 | * writing any data to avoid that a zone reset has to be issued while | |
839 | * writing data, which causes data loss. | |
840 | */ | |
841 | zbd_reset_zones(td, f, zb, ze, td->o.verify != VERIFY_NONE && | |
842 | (td->o.td_ddir & TD_DDIR_WRITE) && | |
843 | td->runstate != TD_VERIFYING); | |
a7c2b6fc | 844 | zbd_reset_write_cnt(td, f); |
bfbdd35b BVA |
845 | } |
846 | ||
59b07544 BVA |
847 | /* The caller must hold f->zbd_info->mutex. */ |
848 | static bool is_zone_open(const struct thread_data *td, const struct fio_file *f, | |
849 | unsigned int zone_idx) | |
850 | { | |
851 | struct zoned_block_device_info *zbdi = f->zbd_info; | |
852 | int i; | |
853 | ||
854 | assert(td->o.max_open_zones <= ARRAY_SIZE(zbdi->open_zones)); | |
855 | assert(zbdi->num_open_zones <= td->o.max_open_zones); | |
856 | ||
857 | for (i = 0; i < zbdi->num_open_zones; i++) | |
858 | if (zbdi->open_zones[i] == zone_idx) | |
859 | return true; | |
860 | ||
861 | return false; | |
862 | } | |
863 | ||
864 | /* | |
865 | * Open a ZBD zone if it was not yet open. Returns true if either the zone was | |
866 | * already open or if opening a new zone is allowed. Returns false if the zone | |
867 | * was not yet open and opening a new zone would cause the zone limit to be | |
868 | * exceeded. | |
869 | */ | |
870 | static bool zbd_open_zone(struct thread_data *td, const struct io_u *io_u, | |
871 | uint32_t zone_idx) | |
872 | { | |
873 | const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; | |
874 | const struct fio_file *f = io_u->file; | |
875 | struct fio_zone_info *z = &f->zbd_info->zone_info[zone_idx]; | |
876 | bool res = true; | |
877 | ||
b7694961 | 878 | if (z->cond == ZBD_ZONE_COND_OFFLINE) |
59b07544 BVA |
879 | return false; |
880 | ||
881 | /* | |
882 | * Skip full zones with data verification enabled because resetting a | |
883 | * zone causes data loss and hence causes verification to fail. | |
884 | */ | |
885 | if (td->o.verify != VERIFY_NONE && zbd_zone_full(f, z, min_bs)) | |
886 | return false; | |
887 | ||
888 | /* Zero means no limit */ | |
889 | if (!td->o.max_open_zones) | |
890 | return true; | |
891 | ||
892 | pthread_mutex_lock(&f->zbd_info->mutex); | |
893 | if (is_zone_open(td, f, zone_idx)) | |
894 | goto out; | |
895 | res = false; | |
896 | if (f->zbd_info->num_open_zones >= td->o.max_open_zones) | |
897 | goto out; | |
898 | dprint(FD_ZBD, "%s: opening zone %d\n", f->file_name, zone_idx); | |
899 | f->zbd_info->open_zones[f->zbd_info->num_open_zones++] = zone_idx; | |
900 | z->open = 1; | |
901 | res = true; | |
902 | ||
903 | out: | |
904 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
905 | return res; | |
906 | } | |
907 | ||
908 | /* The caller must hold f->zbd_info->mutex */ | |
909 | static void zbd_close_zone(struct thread_data *td, const struct fio_file *f, | |
910 | unsigned int open_zone_idx) | |
911 | { | |
912 | uint32_t zone_idx; | |
913 | ||
914 | assert(open_zone_idx < f->zbd_info->num_open_zones); | |
915 | zone_idx = f->zbd_info->open_zones[open_zone_idx]; | |
916 | memmove(f->zbd_info->open_zones + open_zone_idx, | |
917 | f->zbd_info->open_zones + open_zone_idx + 1, | |
b7694961 | 918 | (ZBD_MAX_OPEN_ZONES - (open_zone_idx + 1)) * |
59b07544 BVA |
919 | sizeof(f->zbd_info->open_zones[0])); |
920 | f->zbd_info->num_open_zones--; | |
921 | f->zbd_info->zone_info[zone_idx].open = 0; | |
922 | } | |
923 | ||
6463db6c AD |
924 | /* Anything goes as long as it is not a constant. */ |
925 | static uint32_t pick_random_zone_idx(const struct fio_file *f, | |
926 | const struct io_u *io_u) | |
927 | { | |
928 | return io_u->offset * f->zbd_info->num_open_zones / f->real_file_size; | |
929 | } | |
930 | ||
59b07544 BVA |
931 | /* |
932 | * Modify the offset of an I/O unit that does not refer to an open zone such | |
933 | * that it refers to an open zone. Close an open zone and open a new zone if | |
934 | * necessary. This algorithm can only work correctly if all write pointers are | |
935 | * a multiple of the fio block size. The caller must neither hold z->mutex | |
936 | * nor f->zbd_info->mutex. Returns with z->mutex held upon success. | |
937 | */ | |
379e5f09 BVA |
938 | static struct fio_zone_info *zbd_convert_to_open_zone(struct thread_data *td, |
939 | struct io_u *io_u) | |
59b07544 BVA |
940 | { |
941 | const uint32_t min_bs = td->o.min_bs[io_u->ddir]; | |
942 | const struct fio_file *f = io_u->file; | |
943 | struct fio_zone_info *z; | |
944 | unsigned int open_zone_idx = -1; | |
945 | uint32_t zone_idx, new_zone_idx; | |
946 | int i; | |
947 | ||
948 | assert(is_valid_offset(f, io_u->offset)); | |
949 | ||
950 | if (td->o.max_open_zones) { | |
951 | /* | |
952 | * This statement accesses f->zbd_info->open_zones[] on purpose | |
953 | * without locking. | |
954 | */ | |
6463db6c | 955 | zone_idx = f->zbd_info->open_zones[pick_random_zone_idx(f, io_u)]; |
59b07544 BVA |
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 (;;) { | |
6463db6c AD |
969 | uint32_t tmp_idx; |
970 | ||
59b07544 BVA |
971 | z = &f->zbd_info->zone_info[zone_idx]; |
972 | ||
b27aef6a | 973 | zone_lock(td, z); |
59b07544 BVA |
974 | pthread_mutex_lock(&f->zbd_info->mutex); |
975 | if (td->o.max_open_zones == 0) | |
976 | goto examine_zone; | |
977 | if (f->zbd_info->num_open_zones == 0) { | |
978 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
979 | pthread_mutex_unlock(&z->mutex); | |
980 | dprint(FD_ZBD, "%s(%s): no zones are open\n", | |
981 | __func__, f->file_name); | |
982 | return NULL; | |
983 | } | |
6463db6c AD |
984 | |
985 | /* | |
986 | * List of opened zones is per-device, shared across all threads. | |
987 | * Start with quasi-random candidate zone. | |
988 | * Ignore zones which don't belong to thread's offset/size area. | |
989 | */ | |
990 | open_zone_idx = pick_random_zone_idx(f, io_u); | |
59b07544 | 991 | assert(open_zone_idx < f->zbd_info->num_open_zones); |
6463db6c AD |
992 | tmp_idx = open_zone_idx; |
993 | for (i = 0; i < f->zbd_info->num_open_zones; i++) { | |
994 | uint32_t tmpz; | |
995 | ||
996 | if (tmp_idx >= f->zbd_info->num_open_zones) | |
997 | tmp_idx = 0; | |
998 | tmpz = f->zbd_info->open_zones[tmp_idx]; | |
999 | ||
1000 | if (is_valid_offset(f, f->zbd_info->zone_info[tmpz].start)) { | |
1001 | open_zone_idx = tmp_idx; | |
1002 | goto found_candidate_zone; | |
1003 | } | |
1004 | ||
1005 | tmp_idx++; | |
1006 | } | |
1007 | ||
1008 | dprint(FD_ZBD, "%s(%s): no candidate zone\n", | |
1009 | __func__, f->file_name); | |
adc6adcb DLM |
1010 | pthread_mutex_unlock(&f->zbd_info->mutex); |
1011 | pthread_mutex_unlock(&z->mutex); | |
6463db6c AD |
1012 | return NULL; |
1013 | ||
1014 | found_candidate_zone: | |
59b07544 BVA |
1015 | new_zone_idx = f->zbd_info->open_zones[open_zone_idx]; |
1016 | if (new_zone_idx == zone_idx) | |
1017 | break; | |
1018 | zone_idx = new_zone_idx; | |
1019 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1020 | pthread_mutex_unlock(&z->mutex); | |
1021 | } | |
1022 | ||
1023 | /* Both z->mutex and f->zbd_info->mutex are held. */ | |
1024 | ||
1025 | examine_zone: | |
ee3696bd | 1026 | if (z->wp + min_bs <= (z+1)->start) { |
59b07544 BVA |
1027 | pthread_mutex_unlock(&f->zbd_info->mutex); |
1028 | goto out; | |
1029 | } | |
1030 | dprint(FD_ZBD, "%s(%s): closing zone %d\n", __func__, f->file_name, | |
1031 | zone_idx); | |
1032 | if (td->o.max_open_zones) | |
1033 | zbd_close_zone(td, f, open_zone_idx); | |
1034 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1035 | ||
1036 | /* Only z->mutex is held. */ | |
1037 | ||
1038 | /* Zone 'z' is full, so try to open a new zone. */ | |
1039 | for (i = f->io_size / f->zbd_info->zone_size; i > 0; i--) { | |
1040 | zone_idx++; | |
1041 | pthread_mutex_unlock(&z->mutex); | |
1042 | z++; | |
ee3696bd | 1043 | if (!is_valid_offset(f, z->start)) { |
59b07544 BVA |
1044 | /* Wrap-around. */ |
1045 | zone_idx = zbd_zone_idx(f, f->file_offset); | |
1046 | z = &f->zbd_info->zone_info[zone_idx]; | |
1047 | } | |
ee3696bd | 1048 | assert(is_valid_offset(f, z->start)); |
b27aef6a | 1049 | zone_lock(td, z); |
59b07544 BVA |
1050 | if (z->open) |
1051 | continue; | |
1052 | if (zbd_open_zone(td, io_u, zone_idx)) | |
1053 | goto out; | |
1054 | } | |
1055 | ||
1056 | /* Only z->mutex is held. */ | |
1057 | ||
1058 | /* Check whether the write fits in any of the already opened zones. */ | |
1059 | pthread_mutex_lock(&f->zbd_info->mutex); | |
1060 | for (i = 0; i < f->zbd_info->num_open_zones; i++) { | |
1061 | zone_idx = f->zbd_info->open_zones[i]; | |
1062 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1063 | pthread_mutex_unlock(&z->mutex); | |
1064 | ||
1065 | z = &f->zbd_info->zone_info[zone_idx]; | |
1066 | ||
b27aef6a | 1067 | zone_lock(td, z); |
ee3696bd | 1068 | if (z->wp + min_bs <= (z+1)->start) |
59b07544 BVA |
1069 | goto out; |
1070 | pthread_mutex_lock(&f->zbd_info->mutex); | |
1071 | } | |
1072 | pthread_mutex_unlock(&f->zbd_info->mutex); | |
1073 | pthread_mutex_unlock(&z->mutex); | |
1074 | dprint(FD_ZBD, "%s(%s): did not open another zone\n", __func__, | |
1075 | f->file_name); | |
1076 | return NULL; | |
1077 | ||
1078 | out: | |
1079 | dprint(FD_ZBD, "%s(%s): returning zone %d\n", __func__, f->file_name, | |
1080 | zone_idx); | |
ee3696bd | 1081 | io_u->offset = z->start; |
59b07544 BVA |
1082 | return z; |
1083 | } | |
1084 | ||
bfbdd35b | 1085 | /* The caller must hold z->mutex. */ |
59b07544 BVA |
1086 | static struct fio_zone_info *zbd_replay_write_order(struct thread_data *td, |
1087 | struct io_u *io_u, | |
1088 | struct fio_zone_info *z) | |
bfbdd35b BVA |
1089 | { |
1090 | const struct fio_file *f = io_u->file; | |
1091 | const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; | |
1092 | ||
59b07544 BVA |
1093 | if (!zbd_open_zone(td, io_u, z - f->zbd_info->zone_info)) { |
1094 | pthread_mutex_unlock(&z->mutex); | |
1095 | z = zbd_convert_to_open_zone(td, io_u); | |
1096 | assert(z); | |
1097 | } | |
1098 | ||
bfbdd35b | 1099 | if (z->verify_block * min_bs >= f->zbd_info->zone_size) |
a0c84dd4 JA |
1100 | log_err("%s: %d * %d >= %llu\n", f->file_name, z->verify_block, |
1101 | min_bs, (unsigned long long) f->zbd_info->zone_size); | |
ee3696bd | 1102 | io_u->offset = z->start + z->verify_block++ * min_bs; |
59b07544 | 1103 | return z; |
bfbdd35b BVA |
1104 | } |
1105 | ||
1106 | /* | |
1107 | * Find another zone for which @io_u fits below the write pointer. Start | |
1108 | * searching in zones @zb + 1 .. @zl and continue searching in zones | |
1109 | * @zf .. @zb - 1. | |
1110 | * | |
1111 | * Either returns NULL or returns a zone pointer and holds the mutex for that | |
1112 | * zone. | |
1113 | */ | |
1114 | static struct fio_zone_info * | |
1115 | zbd_find_zone(struct thread_data *td, struct io_u *io_u, | |
1116 | struct fio_zone_info *zb, struct fio_zone_info *zl) | |
1117 | { | |
1118 | const uint32_t min_bs = td->o.min_bs[io_u->ddir]; | |
1119 | const struct fio_file *f = io_u->file; | |
1120 | struct fio_zone_info *z1, *z2; | |
1121 | const struct fio_zone_info *const zf = | |
1122 | &f->zbd_info->zone_info[zbd_zone_idx(f, f->file_offset)]; | |
1123 | ||
1124 | /* | |
1125 | * Skip to the next non-empty zone in case of sequential I/O and to | |
1126 | * the nearest non-empty zone in case of random I/O. | |
1127 | */ | |
1128 | for (z1 = zb + 1, z2 = zb - 1; z1 < zl || z2 >= zf; z1++, z2--) { | |
b7694961 | 1129 | if (z1 < zl && z1->cond != ZBD_ZONE_COND_OFFLINE) { |
bfbdd35b | 1130 | pthread_mutex_lock(&z1->mutex); |
ee3696bd | 1131 | if (z1->start + min_bs <= z1->wp) |
bfbdd35b BVA |
1132 | return z1; |
1133 | pthread_mutex_unlock(&z1->mutex); | |
1134 | } else if (!td_random(td)) { | |
1135 | break; | |
1136 | } | |
1137 | if (td_random(td) && z2 >= zf && | |
b7694961 | 1138 | z2->cond != ZBD_ZONE_COND_OFFLINE) { |
bfbdd35b | 1139 | pthread_mutex_lock(&z2->mutex); |
ee3696bd | 1140 | if (z2->start + min_bs <= z2->wp) |
bfbdd35b BVA |
1141 | return z2; |
1142 | pthread_mutex_unlock(&z2->mutex); | |
1143 | } | |
1144 | } | |
1145 | dprint(FD_ZBD, "%s: adjusting random read offset failed\n", | |
1146 | f->file_name); | |
1147 | return NULL; | |
1148 | } | |
1149 | ||
bfbdd35b | 1150 | /** |
d9ed3e63 | 1151 | * zbd_queue_io - update the write pointer of a sequential zone |
bfbdd35b | 1152 | * @io_u: I/O unit |
d9ed3e63 DLM |
1153 | * @success: Whether or not the I/O unit has been queued successfully |
1154 | * @q: queueing status (busy, completed or queued). | |
bfbdd35b | 1155 | * |
d9ed3e63 DLM |
1156 | * For write and trim operations, update the write pointer of the I/O unit |
1157 | * target zone. | |
bfbdd35b | 1158 | */ |
d9ed3e63 | 1159 | static void zbd_queue_io(struct io_u *io_u, int q, bool success) |
bfbdd35b | 1160 | { |
d9ed3e63 DLM |
1161 | const struct fio_file *f = io_u->file; |
1162 | struct zoned_block_device_info *zbd_info = f->zbd_info; | |
bfbdd35b BVA |
1163 | struct fio_zone_info *z; |
1164 | uint32_t zone_idx; | |
d9ed3e63 | 1165 | uint64_t zone_end; |
bfbdd35b | 1166 | |
bfbdd35b BVA |
1167 | if (!zbd_info) |
1168 | return; | |
1169 | ||
d9ed3e63 | 1170 | zone_idx = zbd_zone_idx(f, io_u->offset); |
bfbdd35b | 1171 | assert(zone_idx < zbd_info->nr_zones); |
d9ed3e63 DLM |
1172 | z = &zbd_info->zone_info[zone_idx]; |
1173 | ||
b7694961 | 1174 | if (!zbd_zone_swr(z)) |
bfbdd35b | 1175 | return; |
d9ed3e63 | 1176 | |
bfbdd35b BVA |
1177 | if (!success) |
1178 | goto unlock; | |
d9ed3e63 DLM |
1179 | |
1180 | dprint(FD_ZBD, | |
1181 | "%s: queued I/O (%lld, %llu) for zone %u\n", | |
1182 | f->file_name, io_u->offset, io_u->buflen, zone_idx); | |
1183 | ||
bfbdd35b BVA |
1184 | switch (io_u->ddir) { |
1185 | case DDIR_WRITE: | |
d9ed3e63 DLM |
1186 | zone_end = min((uint64_t)(io_u->offset + io_u->buflen), |
1187 | (z + 1)->start); | |
a7c2b6fc BVA |
1188 | pthread_mutex_lock(&zbd_info->mutex); |
1189 | /* | |
1190 | * z->wp > zone_end means that one or more I/O errors | |
1191 | * have occurred. | |
1192 | */ | |
1193 | if (z->wp <= zone_end) | |
1194 | zbd_info->sectors_with_data += zone_end - z->wp; | |
1195 | pthread_mutex_unlock(&zbd_info->mutex); | |
bfbdd35b BVA |
1196 | z->wp = zone_end; |
1197 | break; | |
1198 | case DDIR_TRIM: | |
1199 | assert(z->wp == z->start); | |
1200 | break; | |
1201 | default: | |
1202 | break; | |
1203 | } | |
d9ed3e63 | 1204 | |
bfbdd35b | 1205 | unlock: |
d9ed3e63 DLM |
1206 | if (!success || q != FIO_Q_QUEUED) { |
1207 | /* BUSY or COMPLETED: unlock the zone */ | |
1208 | pthread_mutex_unlock(&z->mutex); | |
1209 | io_u->zbd_put_io = NULL; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | /** | |
1214 | * zbd_put_io - Unlock an I/O unit target zone lock | |
1215 | * @io_u: I/O unit | |
1216 | */ | |
1217 | static void zbd_put_io(const struct io_u *io_u) | |
1218 | { | |
1219 | const struct fio_file *f = io_u->file; | |
1220 | struct zoned_block_device_info *zbd_info = f->zbd_info; | |
1221 | struct fio_zone_info *z; | |
1222 | uint32_t zone_idx; | |
f59c2f8e | 1223 | int ret; |
d9ed3e63 DLM |
1224 | |
1225 | if (!zbd_info) | |
1226 | return; | |
615555bb | 1227 | |
d9ed3e63 DLM |
1228 | zone_idx = zbd_zone_idx(f, io_u->offset); |
1229 | assert(zone_idx < zbd_info->nr_zones); | |
1230 | z = &zbd_info->zone_info[zone_idx]; | |
1231 | ||
b7694961 | 1232 | if (!zbd_zone_swr(z)) |
d9ed3e63 DLM |
1233 | return; |
1234 | ||
1235 | dprint(FD_ZBD, | |
1236 | "%s: terminate I/O (%lld, %llu) for zone %u\n", | |
1237 | f->file_name, io_u->offset, io_u->buflen, zone_idx); | |
1238 | ||
f59c2f8e AD |
1239 | ret = pthread_mutex_unlock(&z->mutex); |
1240 | assert(ret == 0); | |
d9ed3e63 | 1241 | zbd_check_swd(f); |
bfbdd35b BVA |
1242 | } |
1243 | ||
9d87c646 DLM |
1244 | /* |
1245 | * Windows and MacOS do not define this. | |
1246 | */ | |
1247 | #ifndef EREMOTEIO | |
1248 | #define EREMOTEIO 121 /* POSIX value */ | |
1249 | #endif | |
1250 | ||
bfbdd35b BVA |
1251 | bool zbd_unaligned_write(int error_code) |
1252 | { | |
1253 | switch (error_code) { | |
1254 | case EIO: | |
1255 | case EREMOTEIO: | |
1256 | return true; | |
1257 | } | |
1258 | return false; | |
1259 | } | |
1260 | ||
4d37720a DLM |
1261 | /** |
1262 | * setup_zbd_zone_mode - handle zoneskip as necessary for ZBD drives | |
1263 | * @td: FIO thread data. | |
1264 | * @io_u: FIO I/O unit. | |
1265 | * | |
1266 | * For sequential workloads, change the file offset to skip zoneskip bytes when | |
1267 | * no more IO can be performed in the current zone. | |
1268 | * - For read workloads, zoneskip is applied when the io has reached the end of | |
1269 | * the zone or the zone write position (when td->o.read_beyond_wp is false). | |
1270 | * - For write workloads, zoneskip is applied when the zone is full. | |
1271 | * This applies only to read and write operations. | |
1272 | */ | |
1273 | void setup_zbd_zone_mode(struct thread_data *td, struct io_u *io_u) | |
1274 | { | |
1275 | struct fio_file *f = io_u->file; | |
1276 | enum fio_ddir ddir = io_u->ddir; | |
1277 | struct fio_zone_info *z; | |
1278 | uint32_t zone_idx; | |
1279 | ||
1280 | assert(td->o.zone_mode == ZONE_MODE_ZBD); | |
1281 | assert(td->o.zone_size); | |
1282 | ||
1283 | /* | |
1284 | * zone_skip is valid only for sequential workloads. | |
1285 | */ | |
1286 | if (td_random(td) || !td->o.zone_skip) | |
1287 | return; | |
1288 | ||
1289 | /* | |
1290 | * It is time to switch to a new zone if: | |
1291 | * - zone_bytes == zone_size bytes have already been accessed | |
1292 | * - The last position reached the end of the current zone. | |
1293 | * - For reads with td->o.read_beyond_wp == false, the last position | |
1294 | * reached the zone write pointer. | |
1295 | */ | |
1296 | zone_idx = zbd_zone_idx(f, f->last_pos[ddir]); | |
1297 | z = &f->zbd_info->zone_info[zone_idx]; | |
1298 | ||
1299 | if (td->zone_bytes >= td->o.zone_size || | |
1300 | f->last_pos[ddir] >= (z+1)->start || | |
1301 | (ddir == DDIR_READ && | |
1302 | (!td->o.read_beyond_wp) && f->last_pos[ddir] >= z->wp)) { | |
1303 | /* | |
1304 | * Skip zones. | |
1305 | */ | |
1306 | td->zone_bytes = 0; | |
1307 | f->file_offset += td->o.zone_size + td->o.zone_skip; | |
1308 | ||
1309 | /* | |
1310 | * Wrap from the beginning, if we exceed the file size | |
1311 | */ | |
1312 | if (f->file_offset >= f->real_file_size) | |
1313 | f->file_offset = get_start_offset(td, f); | |
1314 | ||
1315 | f->last_pos[ddir] = f->file_offset; | |
1316 | td->io_skip_bytes += td->o.zone_skip; | |
1317 | } | |
1318 | } | |
1319 | ||
bfbdd35b BVA |
1320 | /** |
1321 | * zbd_adjust_block - adjust the offset and length as necessary for ZBD drives | |
1322 | * @td: FIO thread data. | |
1323 | * @io_u: FIO I/O unit. | |
1324 | * | |
1325 | * Locking strategy: returns with z->mutex locked if and only if z refers | |
1326 | * to a sequential zone and if io_u_accept is returned. z is the zone that | |
1327 | * corresponds to io_u->offset at the end of this function. | |
1328 | */ | |
1329 | enum io_u_action zbd_adjust_block(struct thread_data *td, struct io_u *io_u) | |
1330 | { | |
b7694961 | 1331 | struct fio_file *f = io_u->file; |
bfbdd35b | 1332 | uint32_t zone_idx_b; |
de65f7b7 | 1333 | struct fio_zone_info *zb, *zl, *orig_zb; |
bfbdd35b BVA |
1334 | uint32_t orig_len = io_u->buflen; |
1335 | uint32_t min_bs = td->o.min_bs[io_u->ddir]; | |
1336 | uint64_t new_len; | |
1337 | int64_t range; | |
1338 | ||
1339 | if (!f->zbd_info) | |
1340 | return io_u_accept; | |
1341 | ||
adc6adcb | 1342 | assert(min_bs); |
bfbdd35b BVA |
1343 | assert(is_valid_offset(f, io_u->offset)); |
1344 | assert(io_u->buflen); | |
1345 | zone_idx_b = zbd_zone_idx(f, io_u->offset); | |
1346 | zb = &f->zbd_info->zone_info[zone_idx_b]; | |
de65f7b7 | 1347 | orig_zb = zb; |
bfbdd35b BVA |
1348 | |
1349 | /* Accept the I/O offset for conventional zones. */ | |
b7694961 | 1350 | if (!zbd_zone_swr(zb)) |
bfbdd35b BVA |
1351 | return io_u_accept; |
1352 | ||
1353 | /* | |
1354 | * Accept the I/O offset for reads if reading beyond the write pointer | |
1355 | * is enabled. | |
1356 | */ | |
b7694961 | 1357 | if (zb->cond != ZBD_ZONE_COND_OFFLINE && |
bfbdd35b BVA |
1358 | io_u->ddir == DDIR_READ && td->o.read_beyond_wp) |
1359 | return io_u_accept; | |
1360 | ||
615555bb BVA |
1361 | zbd_check_swd(f); |
1362 | ||
b27aef6a | 1363 | zone_lock(td, zb); |
6f0c6085 | 1364 | |
bfbdd35b BVA |
1365 | switch (io_u->ddir) { |
1366 | case DDIR_READ: | |
1367 | if (td->runstate == TD_VERIFYING) { | |
59b07544 | 1368 | zb = zbd_replay_write_order(td, io_u, zb); |
bfbdd35b BVA |
1369 | goto accept; |
1370 | } | |
1371 | /* | |
de65f7b7 DLM |
1372 | * Check that there is enough written data in the zone to do an |
1373 | * I/O of at least min_bs B. If there isn't, find a new zone for | |
1374 | * the I/O. | |
bfbdd35b | 1375 | */ |
b7694961 | 1376 | range = zb->cond != ZBD_ZONE_COND_OFFLINE ? |
ee3696bd | 1377 | zb->wp - zb->start : 0; |
de65f7b7 | 1378 | if (range < min_bs || |
ee3696bd | 1379 | ((!td_random(td)) && (io_u->offset + min_bs > zb->wp))) { |
bfbdd35b BVA |
1380 | pthread_mutex_unlock(&zb->mutex); |
1381 | zl = &f->zbd_info->zone_info[zbd_zone_idx(f, | |
1382 | f->file_offset + f->io_size)]; | |
1383 | zb = zbd_find_zone(td, io_u, zb, zl); | |
1384 | if (!zb) { | |
1385 | dprint(FD_ZBD, | |
1386 | "%s: zbd_find_zone(%lld, %llu) failed\n", | |
1387 | f->file_name, io_u->offset, | |
1388 | io_u->buflen); | |
1389 | goto eof; | |
1390 | } | |
de65f7b7 DLM |
1391 | /* |
1392 | * zbd_find_zone() returned a zone with a range of at | |
1393 | * least min_bs. | |
1394 | */ | |
ee3696bd | 1395 | range = zb->wp - zb->start; |
de65f7b7 DLM |
1396 | assert(range >= min_bs); |
1397 | ||
1398 | if (!td_random(td)) | |
ee3696bd | 1399 | io_u->offset = zb->start; |
bfbdd35b | 1400 | } |
de65f7b7 DLM |
1401 | /* |
1402 | * Make sure the I/O is within the zone valid data range while | |
1403 | * maximizing the I/O size and preserving randomness. | |
1404 | */ | |
1405 | if (range <= io_u->buflen) | |
ee3696bd | 1406 | io_u->offset = zb->start; |
de65f7b7 | 1407 | else if (td_random(td)) |
ee3696bd DLM |
1408 | io_u->offset = zb->start + |
1409 | ((io_u->offset - orig_zb->start) % | |
de65f7b7 DLM |
1410 | (range - io_u->buflen)) / min_bs * min_bs; |
1411 | /* | |
1412 | * Make sure the I/O does not cross over the zone wp position. | |
1413 | */ | |
1414 | new_len = min((unsigned long long)io_u->buflen, | |
ee3696bd | 1415 | (unsigned long long)(zb->wp - io_u->offset)); |
de65f7b7 DLM |
1416 | new_len = new_len / min_bs * min_bs; |
1417 | if (new_len < io_u->buflen) { | |
1418 | io_u->buflen = new_len; | |
1419 | dprint(FD_IO, "Changed length from %u into %llu\n", | |
1420 | orig_len, io_u->buflen); | |
bfbdd35b | 1421 | } |
ee3696bd DLM |
1422 | assert(zb->start <= io_u->offset); |
1423 | assert(io_u->offset + io_u->buflen <= zb->wp); | |
bfbdd35b BVA |
1424 | goto accept; |
1425 | case DDIR_WRITE: | |
ee3696bd | 1426 | if (io_u->buflen > f->zbd_info->zone_size) |
bfbdd35b | 1427 | goto eof; |
59b07544 BVA |
1428 | if (!zbd_open_zone(td, io_u, zone_idx_b)) { |
1429 | pthread_mutex_unlock(&zb->mutex); | |
1430 | zb = zbd_convert_to_open_zone(td, io_u); | |
1431 | if (!zb) | |
1432 | goto eof; | |
1433 | zone_idx_b = zb - f->zbd_info->zone_info; | |
1434 | } | |
a7c2b6fc BVA |
1435 | /* Check whether the zone reset threshold has been exceeded */ |
1436 | if (td->o.zrf.u.f) { | |
ee3696bd | 1437 | if (f->zbd_info->sectors_with_data >= |
a7c2b6fc BVA |
1438 | f->io_size * td->o.zrt.u.f && |
1439 | zbd_dec_and_reset_write_cnt(td, f)) { | |
1440 | zb->reset_zone = 1; | |
1441 | } | |
1442 | } | |
bfbdd35b BVA |
1443 | /* Reset the zone pointer if necessary */ |
1444 | if (zb->reset_zone || zbd_zone_full(f, zb, min_bs)) { | |
1445 | assert(td->o.verify == VERIFY_NONE); | |
1446 | /* | |
1447 | * Since previous write requests may have been submitted | |
1448 | * asynchronously and since we will submit the zone | |
1449 | * reset synchronously, wait until previously submitted | |
1450 | * write requests have completed before issuing a | |
1451 | * zone reset. | |
1452 | */ | |
1453 | io_u_quiesce(td); | |
1454 | zb->reset_zone = 0; | |
1455 | if (zbd_reset_zone(td, f, zb) < 0) | |
1456 | goto eof; | |
1457 | } | |
1458 | /* Make writes occur at the write pointer */ | |
1459 | assert(!zbd_zone_full(f, zb, min_bs)); | |
ee3696bd | 1460 | io_u->offset = zb->wp; |
bfbdd35b BVA |
1461 | if (!is_valid_offset(f, io_u->offset)) { |
1462 | dprint(FD_ZBD, "Dropped request with offset %llu\n", | |
1463 | io_u->offset); | |
1464 | goto eof; | |
1465 | } | |
1466 | /* | |
1467 | * Make sure that the buflen is a multiple of the minimal | |
1468 | * block size. Give up if shrinking would make the request too | |
1469 | * small. | |
1470 | */ | |
1471 | new_len = min((unsigned long long)io_u->buflen, | |
ee3696bd | 1472 | (zb + 1)->start - io_u->offset); |
bfbdd35b BVA |
1473 | new_len = new_len / min_bs * min_bs; |
1474 | if (new_len == io_u->buflen) | |
1475 | goto accept; | |
1476 | if (new_len >= min_bs) { | |
1477 | io_u->buflen = new_len; | |
1478 | dprint(FD_IO, "Changed length from %u into %llu\n", | |
1479 | orig_len, io_u->buflen); | |
1480 | goto accept; | |
1481 | } | |
1482 | log_err("Zone remainder %lld smaller than minimum block size %d\n", | |
ee3696bd | 1483 | ((zb + 1)->start - io_u->offset), |
bfbdd35b BVA |
1484 | min_bs); |
1485 | goto eof; | |
1486 | case DDIR_TRIM: | |
1487 | /* fall-through */ | |
1488 | case DDIR_SYNC: | |
1489 | case DDIR_DATASYNC: | |
1490 | case DDIR_SYNC_FILE_RANGE: | |
1491 | case DDIR_WAIT: | |
1492 | case DDIR_LAST: | |
1493 | case DDIR_INVAL: | |
1494 | goto accept; | |
1495 | } | |
1496 | ||
1497 | assert(false); | |
1498 | ||
1499 | accept: | |
1500 | assert(zb); | |
b7694961 | 1501 | assert(zb->cond != ZBD_ZONE_COND_OFFLINE); |
d9ed3e63 DLM |
1502 | assert(!io_u->zbd_queue_io); |
1503 | assert(!io_u->zbd_put_io); | |
1504 | io_u->zbd_queue_io = zbd_queue_io; | |
1505 | io_u->zbd_put_io = zbd_put_io; | |
bfbdd35b BVA |
1506 | return io_u_accept; |
1507 | ||
1508 | eof: | |
1509 | if (zb) | |
1510 | pthread_mutex_unlock(&zb->mutex); | |
1511 | return io_u_eof; | |
1512 | } | |
fd5d733f BVA |
1513 | |
1514 | /* Return a string with ZBD statistics */ | |
1515 | char *zbd_write_status(const struct thread_stat *ts) | |
1516 | { | |
1517 | char *res; | |
1518 | ||
a0c84dd4 | 1519 | if (asprintf(&res, "; %llu zone resets", (unsigned long long) ts->nr_zone_resets) < 0) |
fd5d733f BVA |
1520 | return NULL; |
1521 | return res; | |
1522 | } |