Line data Source code
1 : /* SPDX-License-Identifier: BSD-3-Clause
2 : * Copyright (C) 2018 Intel Corporation.
3 : * All rights reserved.
4 : * Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
5 : */
6 :
7 : #include "bdev_raid.h"
8 : #include "spdk/env.h"
9 : #include "spdk/thread.h"
10 : #include "spdk/log.h"
11 : #include "spdk/string.h"
12 : #include "spdk/util.h"
13 : #include "spdk/json.h"
14 : #include "spdk/likely.h"
15 : #include "spdk/trace.h"
16 : #include "spdk_internal/trace_defs.h"
17 :
18 : #define RAID_OFFSET_BLOCKS_INVALID UINT64_MAX
19 : #define RAID_BDEV_PROCESS_MAX_QD 16
20 :
21 : #define RAID_BDEV_PROCESS_WINDOW_SIZE_KB_DEFAULT 1024
22 : #define RAID_BDEV_PROCESS_MAX_BANDWIDTH_MB_SEC_DEFAULT 0
23 :
24 : static bool g_shutdown_started = false;
25 :
26 : /* List of all raid bdevs */
27 : struct raid_all_tailq g_raid_bdev_list = TAILQ_HEAD_INITIALIZER(g_raid_bdev_list);
28 :
29 : static TAILQ_HEAD(, raid_bdev_module) g_raid_modules = TAILQ_HEAD_INITIALIZER(g_raid_modules);
30 :
31 : /*
32 : * raid_bdev_io_channel is the context of spdk_io_channel for raid bdev device. It
33 : * contains the relationship of raid bdev io channel with base bdev io channels.
34 : */
35 : struct raid_bdev_io_channel {
36 : /* Array of IO channels of base bdevs */
37 : struct spdk_io_channel **base_channel;
38 :
39 : /* Private raid module IO channel */
40 : struct spdk_io_channel *module_channel;
41 :
42 : /* Background process data */
43 : struct {
44 : uint64_t offset;
45 : struct spdk_io_channel *target_ch;
46 : struct raid_bdev_io_channel *ch_processed;
47 : } process;
48 : };
49 :
50 : enum raid_bdev_process_state {
51 : RAID_PROCESS_STATE_INIT,
52 : RAID_PROCESS_STATE_RUNNING,
53 : RAID_PROCESS_STATE_STOPPING,
54 : RAID_PROCESS_STATE_STOPPED,
55 : };
56 :
57 : struct raid_process_qos {
58 : bool enable_qos;
59 : uint64_t last_tsc;
60 : double bytes_per_tsc;
61 : double bytes_available;
62 : double bytes_max;
63 : struct spdk_poller *process_continue_poller;
64 : };
65 :
66 : struct raid_bdev_process {
67 : struct raid_bdev *raid_bdev;
68 : enum raid_process_type type;
69 : enum raid_bdev_process_state state;
70 : struct spdk_thread *thread;
71 : struct raid_bdev_io_channel *raid_ch;
72 : TAILQ_HEAD(, raid_bdev_process_request) requests;
73 : uint64_t max_window_size;
74 : uint64_t window_size;
75 : uint64_t window_remaining;
76 : int window_status;
77 : uint64_t window_offset;
78 : bool window_range_locked;
79 : struct raid_base_bdev_info *target;
80 : int status;
81 : TAILQ_HEAD(, raid_process_finish_action) finish_actions;
82 : struct raid_process_qos qos;
83 : };
84 :
85 : struct raid_process_finish_action {
86 : spdk_msg_fn cb;
87 : void *cb_ctx;
88 : TAILQ_ENTRY(raid_process_finish_action) link;
89 : };
90 :
91 : static struct spdk_raid_bdev_opts g_opts = {
92 : .process_window_size_kb = RAID_BDEV_PROCESS_WINDOW_SIZE_KB_DEFAULT,
93 : .process_max_bandwidth_mb_sec = RAID_BDEV_PROCESS_MAX_BANDWIDTH_MB_SEC_DEFAULT,
94 : };
95 :
96 : void
97 0 : raid_bdev_get_opts(struct spdk_raid_bdev_opts *opts)
98 : {
99 0 : *opts = g_opts;
100 0 : }
101 :
102 : int
103 1 : raid_bdev_set_opts(const struct spdk_raid_bdev_opts *opts)
104 : {
105 1 : if (opts->process_window_size_kb == 0) {
106 0 : return -EINVAL;
107 : }
108 :
109 1 : g_opts = *opts;
110 :
111 1 : return 0;
112 : }
113 :
114 : static struct raid_bdev_module *
115 19 : raid_bdev_module_find(enum raid_level level)
116 : {
117 : struct raid_bdev_module *raid_module;
118 :
119 20 : TAILQ_FOREACH(raid_module, &g_raid_modules, link) {
120 18 : if (raid_module->level == level) {
121 17 : return raid_module;
122 : }
123 : }
124 :
125 2 : return NULL;
126 : }
127 :
128 : void
129 1 : raid_bdev_module_list_add(struct raid_bdev_module *raid_module)
130 : {
131 1 : if (raid_bdev_module_find(raid_module->level) != NULL) {
132 0 : SPDK_ERRLOG("module for raid level '%s' already registered.\n",
133 : raid_bdev_level_to_str(raid_module->level));
134 0 : assert(false);
135 : } else {
136 1 : TAILQ_INSERT_TAIL(&g_raid_modules, raid_module, link);
137 : }
138 1 : }
139 :
140 : struct spdk_io_channel *
141 0 : raid_bdev_channel_get_base_channel(struct raid_bdev_io_channel *raid_ch, uint8_t idx)
142 : {
143 0 : return raid_ch->base_channel[idx];
144 : }
145 :
146 : void *
147 0 : raid_bdev_channel_get_module_ctx(struct raid_bdev_io_channel *raid_ch)
148 : {
149 0 : assert(raid_ch->module_channel != NULL);
150 :
151 0 : return spdk_io_channel_get_ctx(raid_ch->module_channel);
152 : }
153 :
154 : struct raid_base_bdev_info *
155 0 : raid_bdev_channel_get_base_info(struct raid_bdev_io_channel *raid_ch, struct spdk_bdev *base_bdev)
156 : {
157 0 : struct spdk_io_channel *ch = spdk_io_channel_from_ctx(raid_ch);
158 0 : struct raid_bdev *raid_bdev = spdk_io_channel_get_io_device(ch);
159 : uint8_t i;
160 :
161 0 : for (i = 0; i < raid_bdev->num_base_bdevs; i++) {
162 0 : struct raid_base_bdev_info *base_info = &raid_bdev->base_bdev_info[i];
163 :
164 0 : if (base_info->is_configured &&
165 0 : spdk_bdev_desc_get_bdev(base_info->desc) == base_bdev) {
166 0 : return base_info;
167 : }
168 : }
169 :
170 0 : return NULL;
171 : }
172 :
173 : /* Function declarations */
174 : static void raid_bdev_examine(struct spdk_bdev *bdev);
175 : static int raid_bdev_init(void);
176 : static void raid_bdev_deconfigure(struct raid_bdev *raid_bdev,
177 : raid_bdev_destruct_cb cb_fn, void *cb_arg);
178 :
179 : static void
180 7 : raid_bdev_ch_process_cleanup(struct raid_bdev_io_channel *raid_ch)
181 : {
182 7 : raid_ch->process.offset = RAID_OFFSET_BLOCKS_INVALID;
183 :
184 7 : if (raid_ch->process.target_ch != NULL) {
185 1 : spdk_put_io_channel(raid_ch->process.target_ch);
186 1 : raid_ch->process.target_ch = NULL;
187 : }
188 :
189 7 : if (raid_ch->process.ch_processed != NULL) {
190 3 : free(raid_ch->process.ch_processed->base_channel);
191 3 : free(raid_ch->process.ch_processed);
192 3 : raid_ch->process.ch_processed = NULL;
193 : }
194 7 : }
195 :
196 : static int
197 3 : raid_bdev_ch_process_setup(struct raid_bdev_io_channel *raid_ch, struct raid_bdev_process *process)
198 : {
199 3 : struct raid_bdev *raid_bdev = process->raid_bdev;
200 : struct raid_bdev_io_channel *raid_ch_processed;
201 : struct raid_base_bdev_info *base_info;
202 :
203 3 : raid_ch->process.offset = process->window_offset;
204 :
205 : /* In the future we may have other types of processes which don't use a target bdev,
206 : * like data scrubbing or strip size migration. Until then, expect that there always is
207 : * a process target. */
208 3 : assert(process->target != NULL);
209 :
210 3 : raid_ch->process.target_ch = spdk_bdev_get_io_channel(process->target->desc);
211 3 : if (raid_ch->process.target_ch == NULL) {
212 0 : goto err;
213 : }
214 :
215 3 : raid_ch_processed = calloc(1, sizeof(*raid_ch_processed));
216 3 : if (raid_ch_processed == NULL) {
217 0 : goto err;
218 : }
219 3 : raid_ch->process.ch_processed = raid_ch_processed;
220 :
221 3 : raid_ch_processed->base_channel = calloc(raid_bdev->num_base_bdevs,
222 : sizeof(*raid_ch_processed->base_channel));
223 3 : if (raid_ch_processed->base_channel == NULL) {
224 0 : goto err;
225 : }
226 :
227 99 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
228 96 : uint8_t slot = raid_bdev_base_bdev_slot(base_info);
229 :
230 96 : if (base_info != process->target) {
231 93 : raid_ch_processed->base_channel[slot] = raid_ch->base_channel[slot];
232 : } else {
233 3 : raid_ch_processed->base_channel[slot] = raid_ch->process.target_ch;
234 : }
235 : }
236 :
237 3 : raid_ch_processed->module_channel = raid_ch->module_channel;
238 3 : raid_ch_processed->process.offset = RAID_OFFSET_BLOCKS_INVALID;
239 :
240 3 : return 0;
241 0 : err:
242 0 : raid_bdev_ch_process_cleanup(raid_ch);
243 0 : return -ENOMEM;
244 : }
245 :
246 : /*
247 : * brief:
248 : * raid_bdev_create_cb function is a cb function for raid bdev which creates the
249 : * hierarchy from raid bdev to base bdev io channels. It will be called per core
250 : * params:
251 : * io_device - pointer to raid bdev io device represented by raid_bdev
252 : * ctx_buf - pointer to context buffer for raid bdev io channel
253 : * returns:
254 : * 0 - success
255 : * non zero - failure
256 : */
257 : static int
258 5 : raid_bdev_create_cb(void *io_device, void *ctx_buf)
259 : {
260 5 : struct raid_bdev *raid_bdev = io_device;
261 5 : struct raid_bdev_io_channel *raid_ch = ctx_buf;
262 : uint8_t i;
263 5 : int ret = -ENOMEM;
264 :
265 5 : SPDK_DEBUGLOG(bdev_raid, "raid_bdev_create_cb, %p\n", raid_ch);
266 :
267 5 : assert(raid_bdev != NULL);
268 5 : assert(raid_bdev->state == RAID_BDEV_STATE_ONLINE);
269 :
270 5 : raid_ch->base_channel = calloc(raid_bdev->num_base_bdevs, sizeof(struct spdk_io_channel *));
271 5 : if (!raid_ch->base_channel) {
272 0 : SPDK_ERRLOG("Unable to allocate base bdevs io channel\n");
273 0 : return -ENOMEM;
274 : }
275 :
276 165 : for (i = 0; i < raid_bdev->num_base_bdevs; i++) {
277 : /*
278 : * Get the spdk_io_channel for all the base bdevs. This is used during
279 : * split logic to send the respective child bdev ios to respective base
280 : * bdev io channel.
281 : * Skip missing base bdevs and the process target, which should also be treated as
282 : * missing until the process completes.
283 : */
284 160 : if (raid_bdev->base_bdev_info[i].is_configured == false ||
285 160 : raid_bdev->base_bdev_info[i].is_process_target == true) {
286 0 : continue;
287 : }
288 320 : raid_ch->base_channel[i] = spdk_bdev_get_io_channel(
289 160 : raid_bdev->base_bdev_info[i].desc);
290 160 : if (!raid_ch->base_channel[i]) {
291 0 : SPDK_ERRLOG("Unable to create io channel for base bdev\n");
292 0 : goto err;
293 : }
294 : }
295 :
296 5 : if (raid_bdev->module->get_io_channel) {
297 0 : raid_ch->module_channel = raid_bdev->module->get_io_channel(raid_bdev);
298 0 : if (!raid_ch->module_channel) {
299 0 : SPDK_ERRLOG("Unable to create io channel for raid module\n");
300 0 : goto err;
301 : }
302 : }
303 :
304 5 : if (raid_bdev->process != NULL) {
305 3 : ret = raid_bdev_ch_process_setup(raid_ch, raid_bdev->process);
306 3 : if (ret != 0) {
307 0 : SPDK_ERRLOG("Failed to setup process io channel\n");
308 0 : goto err;
309 : }
310 : } else {
311 2 : raid_ch->process.offset = RAID_OFFSET_BLOCKS_INVALID;
312 : }
313 :
314 5 : return 0;
315 0 : err:
316 0 : for (i = 0; i < raid_bdev->num_base_bdevs; i++) {
317 0 : if (raid_ch->base_channel[i] != NULL) {
318 0 : spdk_put_io_channel(raid_ch->base_channel[i]);
319 : }
320 : }
321 0 : free(raid_ch->base_channel);
322 :
323 0 : raid_bdev_ch_process_cleanup(raid_ch);
324 :
325 0 : return ret;
326 : }
327 :
328 : /*
329 : * brief:
330 : * raid_bdev_destroy_cb function is a cb function for raid bdev which deletes the
331 : * hierarchy from raid bdev to base bdev io channels. It will be called per core
332 : * params:
333 : * io_device - pointer to raid bdev io device represented by raid_bdev
334 : * ctx_buf - pointer to context buffer for raid bdev io channel
335 : * returns:
336 : * none
337 : */
338 : static void
339 5 : raid_bdev_destroy_cb(void *io_device, void *ctx_buf)
340 : {
341 5 : struct raid_bdev *raid_bdev = io_device;
342 5 : struct raid_bdev_io_channel *raid_ch = ctx_buf;
343 : uint8_t i;
344 :
345 5 : SPDK_DEBUGLOG(bdev_raid, "raid_bdev_destroy_cb\n");
346 :
347 5 : assert(raid_ch != NULL);
348 5 : assert(raid_ch->base_channel);
349 :
350 5 : if (raid_ch->module_channel) {
351 0 : spdk_put_io_channel(raid_ch->module_channel);
352 : }
353 :
354 165 : for (i = 0; i < raid_bdev->num_base_bdevs; i++) {
355 : /* Free base bdev channels */
356 160 : if (raid_ch->base_channel[i] != NULL) {
357 160 : spdk_put_io_channel(raid_ch->base_channel[i]);
358 : }
359 : }
360 5 : free(raid_ch->base_channel);
361 5 : raid_ch->base_channel = NULL;
362 :
363 5 : raid_bdev_ch_process_cleanup(raid_ch);
364 5 : }
365 :
366 : /*
367 : * brief:
368 : * raid_bdev_cleanup is used to cleanup raid_bdev related data
369 : * structures.
370 : * params:
371 : * raid_bdev - pointer to raid_bdev
372 : * returns:
373 : * none
374 : */
375 : static void
376 17 : raid_bdev_cleanup(struct raid_bdev *raid_bdev)
377 : {
378 : struct raid_base_bdev_info *base_info;
379 :
380 17 : SPDK_DEBUGLOG(bdev_raid, "raid_bdev_cleanup, %p name %s, state %s\n",
381 : raid_bdev, raid_bdev->bdev.name, raid_bdev_state_to_str(raid_bdev->state));
382 17 : assert(raid_bdev->state != RAID_BDEV_STATE_ONLINE);
383 17 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
384 :
385 561 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
386 544 : assert(base_info->desc == NULL);
387 544 : free(base_info->name);
388 : }
389 :
390 17 : TAILQ_REMOVE(&g_raid_bdev_list, raid_bdev, global_link);
391 17 : }
392 :
393 : static void
394 17 : raid_bdev_free(struct raid_bdev *raid_bdev)
395 : {
396 17 : raid_bdev_free_superblock(raid_bdev);
397 17 : free(raid_bdev->base_bdev_info);
398 17 : free(raid_bdev->bdev.name);
399 17 : free(raid_bdev);
400 17 : }
401 :
402 : static void
403 3 : raid_bdev_cleanup_and_free(struct raid_bdev *raid_bdev)
404 : {
405 3 : raid_bdev_cleanup(raid_bdev);
406 3 : raid_bdev_free(raid_bdev);
407 3 : }
408 :
409 : static void
410 510 : raid_bdev_deconfigure_base_bdev(struct raid_base_bdev_info *base_info)
411 : {
412 510 : struct raid_bdev *raid_bdev = base_info->raid_bdev;
413 :
414 510 : assert(base_info->is_configured);
415 510 : assert(raid_bdev->num_base_bdevs_discovered);
416 510 : raid_bdev->num_base_bdevs_discovered--;
417 510 : base_info->is_configured = false;
418 510 : base_info->is_process_target = false;
419 510 : }
420 :
421 : /*
422 : * brief:
423 : * free resource of base bdev for raid bdev
424 : * params:
425 : * base_info - raid base bdev info
426 : * returns:
427 : * none
428 : */
429 : static void
430 543 : raid_bdev_free_base_bdev_resource(struct raid_base_bdev_info *base_info)
431 : {
432 543 : struct raid_bdev *raid_bdev = base_info->raid_bdev;
433 :
434 543 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
435 543 : assert(base_info->configure_cb == NULL);
436 :
437 543 : free(base_info->name);
438 543 : base_info->name = NULL;
439 543 : if (raid_bdev->state != RAID_BDEV_STATE_CONFIGURING) {
440 448 : spdk_uuid_set_null(&base_info->uuid);
441 : }
442 543 : base_info->is_failed = false;
443 :
444 : /* clear `data_offset` to allow it to be recalculated during configuration */
445 543 : base_info->data_offset = 0;
446 :
447 543 : if (base_info->desc == NULL) {
448 33 : return;
449 : }
450 :
451 510 : spdk_bdev_module_release_bdev(spdk_bdev_desc_get_bdev(base_info->desc));
452 510 : spdk_bdev_close(base_info->desc);
453 510 : base_info->desc = NULL;
454 510 : spdk_put_io_channel(base_info->app_thread_ch);
455 510 : base_info->app_thread_ch = NULL;
456 :
457 510 : if (base_info->is_configured) {
458 510 : raid_bdev_deconfigure_base_bdev(base_info);
459 : }
460 : }
461 :
462 : static void
463 14 : raid_bdev_io_device_unregister_cb(void *io_device)
464 : {
465 14 : struct raid_bdev *raid_bdev = io_device;
466 :
467 14 : if (raid_bdev->num_base_bdevs_discovered == 0) {
468 : /* Free raid_bdev when there are no base bdevs left */
469 14 : SPDK_DEBUGLOG(bdev_raid, "raid bdev base bdevs is 0, going to free all in destruct\n");
470 14 : raid_bdev_cleanup(raid_bdev);
471 14 : spdk_bdev_destruct_done(&raid_bdev->bdev, 0);
472 14 : raid_bdev_free(raid_bdev);
473 : } else {
474 0 : spdk_bdev_destruct_done(&raid_bdev->bdev, 0);
475 : }
476 14 : }
477 :
478 : void
479 14 : raid_bdev_module_stop_done(struct raid_bdev *raid_bdev)
480 : {
481 14 : if (raid_bdev->state != RAID_BDEV_STATE_CONFIGURING) {
482 14 : spdk_io_device_unregister(raid_bdev, raid_bdev_io_device_unregister_cb);
483 : }
484 14 : }
485 :
486 : static void
487 14 : _raid_bdev_destruct(void *ctxt)
488 : {
489 14 : struct raid_bdev *raid_bdev = ctxt;
490 : struct raid_base_bdev_info *base_info;
491 :
492 14 : SPDK_DEBUGLOG(bdev_raid, "raid_bdev_destruct\n");
493 :
494 14 : assert(raid_bdev->process == NULL);
495 :
496 462 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
497 : /*
498 : * Close all base bdev descriptors for which call has come from below
499 : * layers. Also close the descriptors if we have started shutdown.
500 : */
501 448 : if (g_shutdown_started || base_info->remove_scheduled == true) {
502 448 : raid_bdev_free_base_bdev_resource(base_info);
503 : }
504 : }
505 :
506 14 : if (g_shutdown_started) {
507 0 : raid_bdev->state = RAID_BDEV_STATE_OFFLINE;
508 : }
509 :
510 14 : if (raid_bdev->module->stop != NULL) {
511 0 : if (raid_bdev->module->stop(raid_bdev) == false) {
512 0 : return;
513 : }
514 : }
515 :
516 14 : raid_bdev_module_stop_done(raid_bdev);
517 : }
518 :
519 : static int
520 14 : raid_bdev_destruct(void *ctx)
521 : {
522 14 : spdk_thread_exec_msg(spdk_thread_get_app_thread(), _raid_bdev_destruct, ctx);
523 :
524 14 : return 1;
525 : }
526 :
527 : int
528 0 : raid_bdev_remap_dix_reftag(void *md_buf, uint64_t num_blocks,
529 : struct spdk_bdev *bdev, uint32_t remapped_offset)
530 : {
531 0 : struct spdk_dif_ctx dif_ctx;
532 0 : struct spdk_dif_error err_blk = {};
533 : int rc;
534 0 : struct spdk_dif_ctx_init_ext_opts dif_opts;
535 0 : struct iovec md_iov = {
536 : .iov_base = md_buf,
537 0 : .iov_len = num_blocks * bdev->md_len,
538 : };
539 :
540 0 : if (md_buf == NULL) {
541 0 : return 0;
542 : }
543 :
544 0 : dif_opts.size = SPDK_SIZEOF(&dif_opts, dif_pi_format);
545 0 : dif_opts.dif_pi_format = bdev->dif_pi_format;
546 0 : rc = spdk_dif_ctx_init(&dif_ctx,
547 0 : bdev->blocklen, bdev->md_len, bdev->md_interleave,
548 0 : bdev->dif_is_head_of_md, bdev->dif_type,
549 : SPDK_DIF_FLAGS_REFTAG_CHECK,
550 : 0, 0, 0, 0, 0, &dif_opts);
551 0 : if (rc != 0) {
552 0 : SPDK_ERRLOG("Initialization of DIF context failed\n");
553 0 : return rc;
554 : }
555 :
556 0 : spdk_dif_ctx_set_remapped_init_ref_tag(&dif_ctx, remapped_offset);
557 :
558 0 : rc = spdk_dix_remap_ref_tag(&md_iov, num_blocks, &dif_ctx, &err_blk, false);
559 0 : if (rc != 0) {
560 0 : SPDK_ERRLOG("Remapping reference tag failed. type=%d, offset=%d"
561 : PRIu32 "\n", err_blk.err_type, err_blk.err_offset);
562 : }
563 :
564 0 : return rc;
565 : }
566 :
567 : int
568 0 : raid_bdev_verify_dix_reftag(struct iovec *iovs, int iovcnt, void *md_buf,
569 : uint64_t num_blocks, struct spdk_bdev *bdev, uint32_t offset_blocks)
570 : {
571 0 : struct spdk_dif_ctx dif_ctx;
572 0 : struct spdk_dif_error err_blk = {};
573 : int rc;
574 0 : struct spdk_dif_ctx_init_ext_opts dif_opts;
575 0 : struct iovec md_iov = {
576 : .iov_base = md_buf,
577 0 : .iov_len = num_blocks * bdev->md_len,
578 : };
579 :
580 0 : if (md_buf == NULL) {
581 0 : return 0;
582 : }
583 :
584 0 : dif_opts.size = SPDK_SIZEOF(&dif_opts, dif_pi_format);
585 0 : dif_opts.dif_pi_format = bdev->dif_pi_format;
586 0 : rc = spdk_dif_ctx_init(&dif_ctx,
587 0 : bdev->blocklen, bdev->md_len, bdev->md_interleave,
588 0 : bdev->dif_is_head_of_md, bdev->dif_type,
589 : SPDK_DIF_FLAGS_REFTAG_CHECK,
590 : offset_blocks, 0, 0, 0, 0, &dif_opts);
591 0 : if (rc != 0) {
592 0 : SPDK_ERRLOG("Initialization of DIF context failed\n");
593 0 : return rc;
594 : }
595 :
596 0 : rc = spdk_dix_verify(iovs, iovcnt, &md_iov, num_blocks, &dif_ctx, &err_blk);
597 0 : if (rc != 0) {
598 0 : SPDK_ERRLOG("Reference tag check failed. type=%d, offset=%d"
599 : PRIu32 "\n", err_blk.err_type, err_blk.err_offset);
600 : }
601 :
602 0 : return rc;
603 : }
604 :
605 : void
606 11 : raid_bdev_io_complete(struct raid_bdev_io *raid_io, enum spdk_bdev_io_status status)
607 : {
608 11 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(raid_io);
609 : int rc;
610 :
611 11 : spdk_trace_record(TRACE_BDEV_RAID_IO_DONE, 0, 0, (uintptr_t)raid_io, (uintptr_t)bdev_io);
612 :
613 11 : if (raid_io->split.offset != RAID_OFFSET_BLOCKS_INVALID) {
614 10 : struct iovec *split_iov = raid_io->split.iov;
615 10 : const struct iovec *split_iov_orig = &raid_io->split.iov_copy;
616 :
617 : /*
618 : * Non-zero offset here means that this is the completion of the first part of the
619 : * split I/O (the higher LBAs). Then, we submit the second part and set offset to 0.
620 : */
621 10 : if (raid_io->split.offset != 0) {
622 5 : raid_io->offset_blocks = bdev_io->u.bdev.offset_blocks;
623 5 : raid_io->md_buf = bdev_io->u.bdev.md_buf;
624 :
625 5 : if (status == SPDK_BDEV_IO_STATUS_SUCCESS) {
626 5 : raid_io->num_blocks = raid_io->split.offset;
627 5 : raid_io->iovcnt = raid_io->iovs - bdev_io->u.bdev.iovs;
628 5 : raid_io->iovs = bdev_io->u.bdev.iovs;
629 5 : if (split_iov != NULL) {
630 4 : raid_io->iovcnt++;
631 4 : split_iov->iov_len = split_iov->iov_base - split_iov_orig->iov_base;
632 4 : split_iov->iov_base = split_iov_orig->iov_base;
633 : }
634 :
635 5 : raid_io->split.offset = 0;
636 5 : raid_io->base_bdev_io_submitted = 0;
637 5 : raid_io->raid_ch = raid_io->raid_ch->process.ch_processed;
638 :
639 5 : raid_io->raid_bdev->module->submit_rw_request(raid_io);
640 5 : return;
641 : }
642 : }
643 :
644 5 : raid_io->num_blocks = bdev_io->u.bdev.num_blocks;
645 5 : raid_io->iovcnt = bdev_io->u.bdev.iovcnt;
646 5 : raid_io->iovs = bdev_io->u.bdev.iovs;
647 5 : if (split_iov != NULL) {
648 4 : *split_iov = *split_iov_orig;
649 : }
650 : }
651 :
652 6 : if (spdk_unlikely(raid_io->completion_cb != NULL)) {
653 0 : raid_io->completion_cb(raid_io, status);
654 : } else {
655 6 : if (spdk_unlikely(bdev_io->type == SPDK_BDEV_IO_TYPE_READ &&
656 : spdk_bdev_get_dif_type(bdev_io->bdev) != SPDK_DIF_DISABLE &&
657 : bdev_io->bdev->dif_check_flags & SPDK_DIF_FLAGS_REFTAG_CHECK &&
658 : status == SPDK_BDEV_IO_STATUS_SUCCESS)) {
659 :
660 0 : rc = raid_bdev_remap_dix_reftag(bdev_io->u.bdev.md_buf,
661 : bdev_io->u.bdev.num_blocks, bdev_io->bdev,
662 0 : bdev_io->u.bdev.offset_blocks);
663 0 : if (rc != 0) {
664 0 : status = SPDK_BDEV_IO_STATUS_FAILED;
665 : }
666 : }
667 6 : spdk_bdev_io_complete(bdev_io, status);
668 : }
669 : }
670 :
671 : /*
672 : * brief:
673 : * raid_bdev_io_complete_part - signal the completion of a part of the expected
674 : * base bdev IOs and complete the raid_io if this is the final expected IO.
675 : * The caller should first set raid_io->base_bdev_io_remaining. This function
676 : * will decrement this counter by the value of the 'completed' parameter and
677 : * complete the raid_io if the counter reaches 0. The caller is free to
678 : * interpret the 'base_bdev_io_remaining' and 'completed' values as needed,
679 : * it can represent e.g. blocks or IOs.
680 : * params:
681 : * raid_io - pointer to raid_bdev_io
682 : * completed - the part of the raid_io that has been completed
683 : * status - status of the base IO
684 : * returns:
685 : * true - if the raid_io is completed
686 : * false - otherwise
687 : */
688 : bool
689 32 : raid_bdev_io_complete_part(struct raid_bdev_io *raid_io, uint64_t completed,
690 : enum spdk_bdev_io_status status)
691 : {
692 32 : assert(raid_io->base_bdev_io_remaining >= completed);
693 32 : raid_io->base_bdev_io_remaining -= completed;
694 :
695 32 : if (status != raid_io->base_bdev_io_status_default) {
696 0 : raid_io->base_bdev_io_status = status;
697 : }
698 :
699 32 : if (raid_io->base_bdev_io_remaining == 0) {
700 1 : raid_bdev_io_complete(raid_io, raid_io->base_bdev_io_status);
701 1 : return true;
702 : } else {
703 31 : return false;
704 : }
705 : }
706 :
707 : /*
708 : * brief:
709 : * raid_bdev_queue_io_wait function processes the IO which failed to submit.
710 : * It will try to queue the IOs after storing the context to bdev wait queue logic.
711 : * params:
712 : * raid_io - pointer to raid_bdev_io
713 : * bdev - the block device that the IO is submitted to
714 : * ch - io channel
715 : * cb_fn - callback when the spdk_bdev_io for bdev becomes available
716 : * returns:
717 : * none
718 : */
719 : void
720 0 : raid_bdev_queue_io_wait(struct raid_bdev_io *raid_io, struct spdk_bdev *bdev,
721 : struct spdk_io_channel *ch, spdk_bdev_io_wait_cb cb_fn)
722 : {
723 0 : raid_io->waitq_entry.bdev = bdev;
724 0 : raid_io->waitq_entry.cb_fn = cb_fn;
725 0 : raid_io->waitq_entry.cb_arg = raid_io;
726 0 : spdk_bdev_queue_io_wait(bdev, ch, &raid_io->waitq_entry);
727 0 : }
728 :
729 : static void
730 32 : raid_base_bdev_reset_complete(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
731 : {
732 32 : struct raid_bdev_io *raid_io = cb_arg;
733 :
734 32 : spdk_bdev_free_io(bdev_io);
735 :
736 32 : raid_bdev_io_complete_part(raid_io, 1, success ?
737 : SPDK_BDEV_IO_STATUS_SUCCESS :
738 : SPDK_BDEV_IO_STATUS_FAILED);
739 32 : }
740 :
741 : static void raid_bdev_submit_reset_request(struct raid_bdev_io *raid_io);
742 :
743 : static void
744 0 : _raid_bdev_submit_reset_request(void *_raid_io)
745 : {
746 0 : struct raid_bdev_io *raid_io = _raid_io;
747 :
748 0 : raid_bdev_submit_reset_request(raid_io);
749 0 : }
750 :
751 : /*
752 : * brief:
753 : * raid_bdev_submit_reset_request function submits reset requests
754 : * to member disks; it will submit as many as possible unless a reset fails with -ENOMEM, in
755 : * which case it will queue it for later submission
756 : * params:
757 : * raid_io
758 : * returns:
759 : * none
760 : */
761 : static void
762 1 : raid_bdev_submit_reset_request(struct raid_bdev_io *raid_io)
763 : {
764 : struct raid_bdev *raid_bdev;
765 : int ret;
766 : uint8_t i;
767 : struct raid_base_bdev_info *base_info;
768 : struct spdk_io_channel *base_ch;
769 :
770 1 : raid_bdev = raid_io->raid_bdev;
771 :
772 1 : if (raid_io->base_bdev_io_remaining == 0) {
773 1 : raid_io->base_bdev_io_remaining = raid_bdev->num_base_bdevs;
774 : }
775 :
776 33 : for (i = raid_io->base_bdev_io_submitted; i < raid_bdev->num_base_bdevs; i++) {
777 32 : base_info = &raid_bdev->base_bdev_info[i];
778 32 : base_ch = raid_io->raid_ch->base_channel[i];
779 32 : if (base_ch == NULL) {
780 0 : raid_io->base_bdev_io_submitted++;
781 0 : raid_bdev_io_complete_part(raid_io, 1, SPDK_BDEV_IO_STATUS_SUCCESS);
782 0 : continue;
783 : }
784 32 : ret = spdk_bdev_reset(base_info->desc, base_ch,
785 : raid_base_bdev_reset_complete, raid_io);
786 32 : if (ret == 0) {
787 32 : raid_io->base_bdev_io_submitted++;
788 0 : } else if (ret == -ENOMEM) {
789 0 : raid_bdev_queue_io_wait(raid_io, spdk_bdev_desc_get_bdev(base_info->desc),
790 : base_ch, _raid_bdev_submit_reset_request);
791 0 : return;
792 : } else {
793 0 : SPDK_ERRLOG("bdev io submit error not due to ENOMEM, it should not happen\n");
794 0 : assert(false);
795 : raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_FAILED);
796 : return;
797 : }
798 : }
799 : }
800 :
801 : static void
802 5 : raid_bdev_io_split(struct raid_bdev_io *raid_io, uint64_t split_offset)
803 : {
804 5 : struct raid_bdev *raid_bdev = raid_io->raid_bdev;
805 5 : size_t iov_offset = split_offset * raid_bdev->bdev.blocklen;
806 : int i;
807 :
808 5 : assert(split_offset != 0);
809 5 : assert(raid_io->split.offset == RAID_OFFSET_BLOCKS_INVALID);
810 5 : raid_io->split.offset = split_offset;
811 :
812 5 : raid_io->offset_blocks += split_offset;
813 5 : raid_io->num_blocks -= split_offset;
814 5 : if (raid_io->md_buf != NULL) {
815 5 : raid_io->md_buf += (split_offset * raid_bdev->bdev.md_len);
816 : }
817 :
818 12 : for (i = 0; i < raid_io->iovcnt; i++) {
819 12 : struct iovec *iov = &raid_io->iovs[i];
820 :
821 12 : if (iov_offset < iov->iov_len) {
822 5 : if (iov_offset == 0) {
823 1 : raid_io->split.iov = NULL;
824 : } else {
825 4 : raid_io->split.iov = iov;
826 4 : raid_io->split.iov_copy = *iov;
827 4 : iov->iov_base += iov_offset;
828 4 : iov->iov_len -= iov_offset;
829 : }
830 5 : raid_io->iovs += i;
831 5 : raid_io->iovcnt -= i;
832 5 : break;
833 : }
834 :
835 7 : iov_offset -= iov->iov_len;
836 : }
837 5 : }
838 :
839 : static void
840 5 : raid_bdev_submit_rw_request(struct raid_bdev_io *raid_io)
841 : {
842 5 : struct raid_bdev_io_channel *raid_ch = raid_io->raid_ch;
843 :
844 5 : if (raid_ch->process.offset != RAID_OFFSET_BLOCKS_INVALID) {
845 5 : uint64_t offset_begin = raid_io->offset_blocks;
846 5 : uint64_t offset_end = offset_begin + raid_io->num_blocks;
847 :
848 5 : if (offset_end > raid_ch->process.offset) {
849 5 : if (offset_begin < raid_ch->process.offset) {
850 : /*
851 : * If the I/O spans both the processed and unprocessed ranges,
852 : * split it and first handle the unprocessed part. After it
853 : * completes, the rest will be handled.
854 : * This situation occurs when the process thread is not active
855 : * or is waiting for the process window range to be locked
856 : * (quiesced). When a window is being processed, such I/Os will be
857 : * deferred by the bdev layer until the window is unlocked.
858 : */
859 5 : SPDK_DEBUGLOG(bdev_raid, "split: process_offset: %lu offset_begin: %lu offset_end: %lu\n",
860 : raid_ch->process.offset, offset_begin, offset_end);
861 5 : raid_bdev_io_split(raid_io, raid_ch->process.offset - offset_begin);
862 : }
863 : } else {
864 : /* Use the child channel, which corresponds to the already processed range */
865 0 : raid_io->raid_ch = raid_ch->process.ch_processed;
866 : }
867 : }
868 :
869 5 : raid_io->raid_bdev->module->submit_rw_request(raid_io);
870 5 : }
871 :
872 : /*
873 : * brief:
874 : * Callback function to spdk_bdev_io_get_buf.
875 : * params:
876 : * ch - pointer to raid bdev io channel
877 : * bdev_io - pointer to parent bdev_io on raid bdev device
878 : * success - True if buffer is allocated or false otherwise.
879 : * returns:
880 : * none
881 : */
882 : static void
883 0 : raid_bdev_get_buf_cb(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev_io,
884 : bool success)
885 : {
886 0 : struct raid_bdev_io *raid_io = (struct raid_bdev_io *)bdev_io->driver_ctx;
887 :
888 0 : if (!success) {
889 0 : raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_FAILED);
890 0 : return;
891 : }
892 :
893 0 : raid_bdev_submit_rw_request(raid_io);
894 : }
895 :
896 : void
897 6 : raid_bdev_io_init(struct raid_bdev_io *raid_io, struct raid_bdev_io_channel *raid_ch,
898 : enum spdk_bdev_io_type type, uint64_t offset_blocks,
899 : uint64_t num_blocks, struct iovec *iovs, int iovcnt, void *md_buf,
900 : struct spdk_memory_domain *memory_domain, void *memory_domain_ctx)
901 : {
902 6 : struct spdk_io_channel *ch = spdk_io_channel_from_ctx(raid_ch);
903 6 : struct raid_bdev *raid_bdev = spdk_io_channel_get_io_device(ch);
904 :
905 6 : raid_io->type = type;
906 6 : raid_io->offset_blocks = offset_blocks;
907 6 : raid_io->num_blocks = num_blocks;
908 6 : raid_io->iovs = iovs;
909 6 : raid_io->iovcnt = iovcnt;
910 6 : raid_io->memory_domain = memory_domain;
911 6 : raid_io->memory_domain_ctx = memory_domain_ctx;
912 6 : raid_io->md_buf = md_buf;
913 :
914 6 : raid_io->raid_bdev = raid_bdev;
915 6 : raid_io->raid_ch = raid_ch;
916 6 : raid_io->base_bdev_io_remaining = 0;
917 6 : raid_io->base_bdev_io_submitted = 0;
918 6 : raid_io->completion_cb = NULL;
919 6 : raid_io->split.offset = RAID_OFFSET_BLOCKS_INVALID;
920 :
921 6 : raid_bdev_io_set_default_status(raid_io, SPDK_BDEV_IO_STATUS_SUCCESS);
922 6 : }
923 :
924 : /*
925 : * brief:
926 : * raid_bdev_submit_request function is the submit_request function pointer of
927 : * raid bdev function table. This is used to submit the io on raid_bdev to below
928 : * layers.
929 : * params:
930 : * ch - pointer to raid bdev io channel
931 : * bdev_io - pointer to parent bdev_io on raid bdev device
932 : * returns:
933 : * none
934 : */
935 : static void
936 6 : raid_bdev_submit_request(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev_io)
937 : {
938 6 : struct raid_bdev_io *raid_io = (struct raid_bdev_io *)bdev_io->driver_ctx;
939 :
940 6 : raid_bdev_io_init(raid_io, spdk_io_channel_get_ctx(ch), bdev_io->type,
941 : bdev_io->u.bdev.offset_blocks, bdev_io->u.bdev.num_blocks,
942 : bdev_io->u.bdev.iovs, bdev_io->u.bdev.iovcnt, bdev_io->u.bdev.md_buf,
943 : bdev_io->u.bdev.memory_domain, bdev_io->u.bdev.memory_domain_ctx);
944 :
945 6 : spdk_trace_record(TRACE_BDEV_RAID_IO_START, 0, 0, (uintptr_t)raid_io, (uintptr_t)bdev_io);
946 :
947 6 : switch (bdev_io->type) {
948 0 : case SPDK_BDEV_IO_TYPE_READ:
949 0 : spdk_bdev_io_get_buf(bdev_io, raid_bdev_get_buf_cb,
950 0 : bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen);
951 0 : break;
952 5 : case SPDK_BDEV_IO_TYPE_WRITE:
953 5 : raid_bdev_submit_rw_request(raid_io);
954 5 : break;
955 :
956 1 : case SPDK_BDEV_IO_TYPE_RESET:
957 1 : raid_bdev_submit_reset_request(raid_io);
958 1 : break;
959 :
960 0 : case SPDK_BDEV_IO_TYPE_FLUSH:
961 : case SPDK_BDEV_IO_TYPE_UNMAP:
962 0 : if (raid_io->raid_bdev->process != NULL) {
963 : /* TODO: rebuild support */
964 0 : raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_FAILED);
965 0 : return;
966 : }
967 0 : raid_io->raid_bdev->module->submit_null_payload_request(raid_io);
968 0 : break;
969 :
970 0 : default:
971 0 : SPDK_ERRLOG("submit request, invalid io type %u\n", bdev_io->type);
972 0 : raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_FAILED);
973 0 : break;
974 : }
975 : }
976 :
977 : /*
978 : * brief:
979 : * _raid_bdev_io_type_supported checks whether io_type is supported in
980 : * all base bdev modules of raid bdev module. If anyone among the base_bdevs
981 : * doesn't support, the raid device doesn't supports.
982 : *
983 : * params:
984 : * raid_bdev - pointer to raid bdev context
985 : * io_type - io type
986 : * returns:
987 : * true - io_type is supported
988 : * false - io_type is not supported
989 : */
990 : inline static bool
991 1 : _raid_bdev_io_type_supported(struct raid_bdev *raid_bdev, enum spdk_bdev_io_type io_type)
992 : {
993 : struct raid_base_bdev_info *base_info;
994 :
995 1 : if (io_type == SPDK_BDEV_IO_TYPE_FLUSH ||
996 : io_type == SPDK_BDEV_IO_TYPE_UNMAP) {
997 0 : if (raid_bdev->module->submit_null_payload_request == NULL) {
998 0 : return false;
999 : }
1000 : }
1001 :
1002 33 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
1003 32 : if (base_info->desc == NULL) {
1004 0 : continue;
1005 : }
1006 :
1007 32 : if (spdk_bdev_io_type_supported(spdk_bdev_desc_get_bdev(base_info->desc), io_type) == false) {
1008 0 : return false;
1009 : }
1010 : }
1011 :
1012 1 : return true;
1013 : }
1014 :
1015 : /*
1016 : * brief:
1017 : * raid_bdev_io_type_supported is the io_supported function for bdev function
1018 : * table which returns whether the particular io type is supported or not by
1019 : * raid bdev module
1020 : * params:
1021 : * ctx - pointer to raid bdev context
1022 : * type - io type
1023 : * returns:
1024 : * true - io_type is supported
1025 : * false - io_type is not supported
1026 : */
1027 : static bool
1028 4 : raid_bdev_io_type_supported(void *ctx, enum spdk_bdev_io_type io_type)
1029 : {
1030 4 : switch (io_type) {
1031 2 : case SPDK_BDEV_IO_TYPE_READ:
1032 : case SPDK_BDEV_IO_TYPE_WRITE:
1033 2 : return true;
1034 :
1035 1 : case SPDK_BDEV_IO_TYPE_FLUSH:
1036 : case SPDK_BDEV_IO_TYPE_RESET:
1037 : case SPDK_BDEV_IO_TYPE_UNMAP:
1038 1 : return _raid_bdev_io_type_supported(ctx, io_type);
1039 :
1040 1 : default:
1041 1 : return false;
1042 : }
1043 :
1044 : return false;
1045 : }
1046 :
1047 : /*
1048 : * brief:
1049 : * raid_bdev_get_io_channel is the get_io_channel function table pointer for
1050 : * raid bdev. This is used to return the io channel for this raid bdev
1051 : * params:
1052 : * ctxt - pointer to raid_bdev
1053 : * returns:
1054 : * pointer to io channel for raid bdev
1055 : */
1056 : static struct spdk_io_channel *
1057 0 : raid_bdev_get_io_channel(void *ctxt)
1058 : {
1059 0 : struct raid_bdev *raid_bdev = ctxt;
1060 :
1061 0 : return spdk_get_io_channel(raid_bdev);
1062 : }
1063 :
1064 : void
1065 7 : raid_bdev_write_info_json(struct raid_bdev *raid_bdev, struct spdk_json_write_ctx *w)
1066 : {
1067 : struct raid_base_bdev_info *base_info;
1068 :
1069 7 : assert(raid_bdev != NULL);
1070 7 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
1071 :
1072 7 : spdk_json_write_named_uuid(w, "uuid", &raid_bdev->bdev.uuid);
1073 7 : spdk_json_write_named_uint32(w, "strip_size_kb", raid_bdev->strip_size_kb);
1074 7 : spdk_json_write_named_string(w, "state", raid_bdev_state_to_str(raid_bdev->state));
1075 7 : spdk_json_write_named_string(w, "raid_level", raid_bdev_level_to_str(raid_bdev->level));
1076 7 : spdk_json_write_named_bool(w, "superblock", raid_bdev->superblock_enabled);
1077 7 : spdk_json_write_named_uint32(w, "num_base_bdevs", raid_bdev->num_base_bdevs);
1078 7 : spdk_json_write_named_uint32(w, "num_base_bdevs_discovered", raid_bdev->num_base_bdevs_discovered);
1079 7 : spdk_json_write_named_uint32(w, "num_base_bdevs_operational",
1080 7 : raid_bdev->num_base_bdevs_operational);
1081 7 : if (raid_bdev->process) {
1082 0 : struct raid_bdev_process *process = raid_bdev->process;
1083 0 : uint64_t offset = process->window_offset;
1084 :
1085 0 : spdk_json_write_named_object_begin(w, "process");
1086 0 : spdk_json_write_name(w, "type");
1087 0 : spdk_json_write_string(w, raid_bdev_process_to_str(process->type));
1088 0 : spdk_json_write_named_string(w, "target", process->target->name);
1089 0 : spdk_json_write_named_object_begin(w, "progress");
1090 0 : spdk_json_write_named_uint64(w, "blocks", offset);
1091 0 : spdk_json_write_named_uint32(w, "percent", offset * 100.0 / raid_bdev->bdev.blockcnt);
1092 0 : spdk_json_write_object_end(w);
1093 0 : spdk_json_write_object_end(w);
1094 : }
1095 7 : spdk_json_write_name(w, "base_bdevs_list");
1096 7 : spdk_json_write_array_begin(w);
1097 231 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
1098 224 : spdk_json_write_object_begin(w);
1099 224 : spdk_json_write_name(w, "name");
1100 224 : if (base_info->name) {
1101 224 : spdk_json_write_string(w, base_info->name);
1102 : } else {
1103 0 : spdk_json_write_null(w);
1104 : }
1105 224 : spdk_json_write_named_uuid(w, "uuid", &base_info->uuid);
1106 224 : spdk_json_write_named_bool(w, "is_configured", base_info->is_configured);
1107 224 : spdk_json_write_named_uint64(w, "data_offset", base_info->data_offset);
1108 224 : spdk_json_write_named_uint64(w, "data_size", base_info->data_size);
1109 224 : spdk_json_write_object_end(w);
1110 : }
1111 7 : spdk_json_write_array_end(w);
1112 7 : }
1113 :
1114 : /*
1115 : * brief:
1116 : * raid_bdev_dump_info_json is the function table pointer for raid bdev
1117 : * params:
1118 : * ctx - pointer to raid_bdev
1119 : * w - pointer to json context
1120 : * returns:
1121 : * 0 - success
1122 : * non zero - failure
1123 : */
1124 : static int
1125 1 : raid_bdev_dump_info_json(void *ctx, struct spdk_json_write_ctx *w)
1126 : {
1127 1 : struct raid_bdev *raid_bdev = ctx;
1128 :
1129 1 : SPDK_DEBUGLOG(bdev_raid, "raid_bdev_dump_config_json\n");
1130 :
1131 : /* Dump the raid bdev configuration related information */
1132 1 : spdk_json_write_named_object_begin(w, "raid");
1133 1 : raid_bdev_write_info_json(raid_bdev, w);
1134 1 : spdk_json_write_object_end(w);
1135 :
1136 1 : return 0;
1137 : }
1138 :
1139 : /*
1140 : * brief:
1141 : * raid_bdev_write_config_json is the function table pointer for raid bdev
1142 : * params:
1143 : * bdev - pointer to spdk_bdev
1144 : * w - pointer to json context
1145 : * returns:
1146 : * none
1147 : */
1148 : static void
1149 0 : raid_bdev_write_config_json(struct spdk_bdev *bdev, struct spdk_json_write_ctx *w)
1150 : {
1151 0 : struct raid_bdev *raid_bdev = bdev->ctxt;
1152 : struct raid_base_bdev_info *base_info;
1153 :
1154 0 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
1155 :
1156 0 : if (raid_bdev->superblock_enabled) {
1157 : /* raid bdev configuration is stored in the superblock */
1158 0 : return;
1159 : }
1160 :
1161 0 : spdk_json_write_object_begin(w);
1162 :
1163 0 : spdk_json_write_named_string(w, "method", "bdev_raid_create");
1164 :
1165 0 : spdk_json_write_named_object_begin(w, "params");
1166 0 : spdk_json_write_named_string(w, "name", bdev->name);
1167 0 : spdk_json_write_named_uuid(w, "uuid", &raid_bdev->bdev.uuid);
1168 0 : if (raid_bdev->strip_size_kb != 0) {
1169 0 : spdk_json_write_named_uint32(w, "strip_size_kb", raid_bdev->strip_size_kb);
1170 : }
1171 0 : spdk_json_write_named_string(w, "raid_level", raid_bdev_level_to_str(raid_bdev->level));
1172 :
1173 0 : spdk_json_write_named_array_begin(w, "base_bdevs");
1174 0 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
1175 0 : if (base_info->name) {
1176 0 : spdk_json_write_string(w, base_info->name);
1177 : } else {
1178 0 : char str[32];
1179 :
1180 0 : snprintf(str, sizeof(str), "removed_base_bdev_%u", raid_bdev_base_bdev_slot(base_info));
1181 0 : spdk_json_write_string(w, str);
1182 : }
1183 : }
1184 0 : spdk_json_write_array_end(w);
1185 0 : spdk_json_write_object_end(w);
1186 :
1187 0 : spdk_json_write_object_end(w);
1188 : }
1189 :
1190 : static int
1191 0 : raid_bdev_get_memory_domains(void *ctx, struct spdk_memory_domain **domains, int array_size)
1192 : {
1193 0 : struct raid_bdev *raid_bdev = ctx;
1194 : struct raid_base_bdev_info *base_info;
1195 0 : int domains_count = 0, rc = 0;
1196 :
1197 0 : if (raid_bdev->module->memory_domains_supported == false) {
1198 0 : return 0;
1199 : }
1200 :
1201 : /* First loop to get the number of memory domains */
1202 0 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
1203 0 : if (base_info->is_configured == false) {
1204 0 : continue;
1205 : }
1206 0 : rc = spdk_bdev_get_memory_domains(spdk_bdev_desc_get_bdev(base_info->desc), NULL, 0);
1207 0 : if (rc < 0) {
1208 0 : return rc;
1209 : }
1210 0 : domains_count += rc;
1211 : }
1212 :
1213 0 : if (!domains || array_size < domains_count) {
1214 0 : return domains_count;
1215 : }
1216 :
1217 0 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
1218 0 : if (base_info->is_configured == false) {
1219 0 : continue;
1220 : }
1221 0 : rc = spdk_bdev_get_memory_domains(spdk_bdev_desc_get_bdev(base_info->desc), domains, array_size);
1222 0 : if (rc < 0) {
1223 0 : return rc;
1224 : }
1225 0 : domains += rc;
1226 0 : array_size -= rc;
1227 : }
1228 :
1229 0 : return domains_count;
1230 : }
1231 :
1232 : /* g_raid_bdev_fn_table is the function table for raid bdev */
1233 : static const struct spdk_bdev_fn_table g_raid_bdev_fn_table = {
1234 : .destruct = raid_bdev_destruct,
1235 : .submit_request = raid_bdev_submit_request,
1236 : .io_type_supported = raid_bdev_io_type_supported,
1237 : .get_io_channel = raid_bdev_get_io_channel,
1238 : .dump_info_json = raid_bdev_dump_info_json,
1239 : .write_config_json = raid_bdev_write_config_json,
1240 : .get_memory_domains = raid_bdev_get_memory_domains,
1241 : };
1242 :
1243 : struct raid_bdev *
1244 36 : raid_bdev_find_by_name(const char *name)
1245 : {
1246 : struct raid_bdev *raid_bdev;
1247 :
1248 43 : TAILQ_FOREACH(raid_bdev, &g_raid_bdev_list, global_link) {
1249 23 : if (strcmp(raid_bdev->bdev.name, name) == 0) {
1250 16 : return raid_bdev;
1251 : }
1252 : }
1253 :
1254 20 : return NULL;
1255 : }
1256 :
1257 : static struct raid_bdev *
1258 0 : raid_bdev_find_by_uuid(const struct spdk_uuid *uuid)
1259 : {
1260 : struct raid_bdev *raid_bdev;
1261 :
1262 0 : TAILQ_FOREACH(raid_bdev, &g_raid_bdev_list, global_link) {
1263 0 : if (spdk_uuid_compare(&raid_bdev->bdev.uuid, uuid) == 0) {
1264 0 : return raid_bdev;
1265 : }
1266 : }
1267 :
1268 0 : return NULL;
1269 : }
1270 :
1271 : static struct {
1272 : const char *name;
1273 : enum raid_level value;
1274 : } g_raid_level_names[] = {
1275 : { "raid0", RAID0 },
1276 : { "0", RAID0 },
1277 : { "raid1", RAID1 },
1278 : { "1", RAID1 },
1279 : { "raid5f", RAID5F },
1280 : { "5f", RAID5F },
1281 : { "concat", CONCAT },
1282 : { }
1283 : };
1284 :
1285 : const char *g_raid_state_names[] = {
1286 : [RAID_BDEV_STATE_ONLINE] = "online",
1287 : [RAID_BDEV_STATE_CONFIGURING] = "configuring",
1288 : [RAID_BDEV_STATE_OFFLINE] = "offline",
1289 : [RAID_BDEV_STATE_MAX] = NULL
1290 : };
1291 :
1292 : static const char *g_raid_process_type_names[] = {
1293 : [RAID_PROCESS_NONE] = "none",
1294 : [RAID_PROCESS_REBUILD] = "rebuild",
1295 : [RAID_PROCESS_MAX] = NULL
1296 : };
1297 :
1298 : /* We have to use the typedef in the function declaration to appease astyle. */
1299 : typedef enum raid_level raid_level_t;
1300 : typedef enum raid_bdev_state raid_bdev_state_t;
1301 :
1302 : raid_level_t
1303 4 : raid_bdev_str_to_level(const char *str)
1304 : {
1305 : unsigned int i;
1306 :
1307 4 : assert(str != NULL);
1308 :
1309 12 : for (i = 0; g_raid_level_names[i].name != NULL; i++) {
1310 11 : if (strcasecmp(g_raid_level_names[i].name, str) == 0) {
1311 3 : return g_raid_level_names[i].value;
1312 : }
1313 : }
1314 :
1315 1 : return INVALID_RAID_LEVEL;
1316 : }
1317 :
1318 : const char *
1319 11 : raid_bdev_level_to_str(enum raid_level level)
1320 : {
1321 : unsigned int i;
1322 :
1323 81 : for (i = 0; g_raid_level_names[i].name != NULL; i++) {
1324 71 : if (g_raid_level_names[i].value == level) {
1325 1 : return g_raid_level_names[i].name;
1326 : }
1327 : }
1328 :
1329 10 : return "";
1330 : }
1331 :
1332 : raid_bdev_state_t
1333 6 : raid_bdev_str_to_state(const char *str)
1334 : {
1335 : unsigned int i;
1336 :
1337 6 : assert(str != NULL);
1338 :
1339 18 : for (i = 0; i < RAID_BDEV_STATE_MAX; i++) {
1340 15 : if (strcasecmp(g_raid_state_names[i], str) == 0) {
1341 3 : break;
1342 : }
1343 : }
1344 :
1345 6 : return i;
1346 : }
1347 :
1348 : const char *
1349 7 : raid_bdev_state_to_str(enum raid_bdev_state state)
1350 : {
1351 7 : if (state >= RAID_BDEV_STATE_MAX) {
1352 0 : return "";
1353 : }
1354 :
1355 7 : return g_raid_state_names[state];
1356 : }
1357 :
1358 : const char *
1359 6 : raid_bdev_process_to_str(enum raid_process_type value)
1360 : {
1361 6 : if (value >= RAID_PROCESS_MAX) {
1362 0 : return "";
1363 : }
1364 :
1365 6 : return g_raid_process_type_names[value];
1366 : }
1367 :
1368 : /*
1369 : * brief:
1370 : * raid_bdev_fini_start is called when bdev layer is starting the
1371 : * shutdown process
1372 : * params:
1373 : * none
1374 : * returns:
1375 : * none
1376 : */
1377 : static void
1378 0 : raid_bdev_fini_start(void)
1379 : {
1380 : struct raid_bdev *raid_bdev;
1381 : struct raid_base_bdev_info *base_info;
1382 :
1383 0 : SPDK_DEBUGLOG(bdev_raid, "raid_bdev_fini_start\n");
1384 :
1385 0 : TAILQ_FOREACH(raid_bdev, &g_raid_bdev_list, global_link) {
1386 0 : if (raid_bdev->state != RAID_BDEV_STATE_ONLINE) {
1387 0 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
1388 0 : raid_bdev_free_base_bdev_resource(base_info);
1389 : }
1390 : }
1391 : }
1392 :
1393 0 : g_shutdown_started = true;
1394 0 : }
1395 :
1396 : /*
1397 : * brief:
1398 : * raid_bdev_exit is called on raid bdev module exit time by bdev layer
1399 : * params:
1400 : * none
1401 : * returns:
1402 : * none
1403 : */
1404 : static void
1405 12 : raid_bdev_exit(void)
1406 : {
1407 : struct raid_bdev *raid_bdev, *tmp;
1408 :
1409 12 : SPDK_DEBUGLOG(bdev_raid, "raid_bdev_exit\n");
1410 :
1411 12 : TAILQ_FOREACH_SAFE(raid_bdev, &g_raid_bdev_list, global_link, tmp) {
1412 0 : raid_bdev_cleanup_and_free(raid_bdev);
1413 : }
1414 12 : }
1415 :
1416 : static void
1417 0 : raid_bdev_opts_config_json(struct spdk_json_write_ctx *w)
1418 : {
1419 0 : spdk_json_write_object_begin(w);
1420 :
1421 0 : spdk_json_write_named_string(w, "method", "bdev_raid_set_options");
1422 :
1423 0 : spdk_json_write_named_object_begin(w, "params");
1424 0 : spdk_json_write_named_uint32(w, "process_window_size_kb", g_opts.process_window_size_kb);
1425 0 : spdk_json_write_named_uint32(w, "process_max_bandwidth_mb_sec",
1426 : g_opts.process_max_bandwidth_mb_sec);
1427 0 : spdk_json_write_object_end(w);
1428 :
1429 0 : spdk_json_write_object_end(w);
1430 0 : }
1431 :
1432 : static int
1433 0 : raid_bdev_config_json(struct spdk_json_write_ctx *w)
1434 : {
1435 0 : raid_bdev_opts_config_json(w);
1436 :
1437 0 : return 0;
1438 : }
1439 :
1440 : /*
1441 : * brief:
1442 : * raid_bdev_get_ctx_size is used to return the context size of bdev_io for raid
1443 : * module
1444 : * params:
1445 : * none
1446 : * returns:
1447 : * size of spdk_bdev_io context for raid
1448 : */
1449 : static int
1450 1 : raid_bdev_get_ctx_size(void)
1451 : {
1452 1 : SPDK_DEBUGLOG(bdev_raid, "raid_bdev_get_ctx_size\n");
1453 1 : return sizeof(struct raid_bdev_io);
1454 : }
1455 :
1456 : static struct spdk_bdev_module g_raid_if = {
1457 : .name = "raid",
1458 : .module_init = raid_bdev_init,
1459 : .fini_start = raid_bdev_fini_start,
1460 : .module_fini = raid_bdev_exit,
1461 : .config_json = raid_bdev_config_json,
1462 : .get_ctx_size = raid_bdev_get_ctx_size,
1463 : .examine_disk = raid_bdev_examine,
1464 : .async_init = false,
1465 : .async_fini = false,
1466 : };
1467 1 : SPDK_BDEV_MODULE_REGISTER(raid, &g_raid_if)
1468 :
1469 : /*
1470 : * brief:
1471 : * raid_bdev_init is the initialization function for raid bdev module
1472 : * params:
1473 : * none
1474 : * returns:
1475 : * 0 - success
1476 : * non zero - failure
1477 : */
1478 : static int
1479 12 : raid_bdev_init(void)
1480 : {
1481 12 : return 0;
1482 : }
1483 :
1484 : static int
1485 20 : _raid_bdev_create(const char *name, uint32_t strip_size, uint8_t num_base_bdevs,
1486 : enum raid_level level, bool superblock_enabled, const struct spdk_uuid *uuid,
1487 : struct raid_bdev **raid_bdev_out)
1488 : {
1489 : struct raid_bdev *raid_bdev;
1490 : struct spdk_bdev *raid_bdev_gen;
1491 : struct raid_bdev_module *module;
1492 : struct raid_base_bdev_info *base_info;
1493 : uint8_t min_operational;
1494 :
1495 20 : if (strnlen(name, RAID_BDEV_SB_NAME_SIZE) == RAID_BDEV_SB_NAME_SIZE) {
1496 0 : SPDK_ERRLOG("Raid bdev name '%s' exceeds %d characters\n", name, RAID_BDEV_SB_NAME_SIZE - 1);
1497 0 : return -EINVAL;
1498 : }
1499 :
1500 20 : if (raid_bdev_find_by_name(name) != NULL) {
1501 1 : SPDK_ERRLOG("Duplicate raid bdev name found: %s\n", name);
1502 1 : return -EEXIST;
1503 : }
1504 :
1505 19 : if (level == RAID1) {
1506 0 : if (strip_size != 0) {
1507 0 : SPDK_ERRLOG("Strip size is not supported by raid1\n");
1508 0 : return -EINVAL;
1509 : }
1510 19 : } else if (spdk_u32_is_pow2(strip_size) == false) {
1511 1 : SPDK_ERRLOG("Invalid strip size %" PRIu32 "\n", strip_size);
1512 1 : return -EINVAL;
1513 : }
1514 :
1515 18 : module = raid_bdev_module_find(level);
1516 18 : if (module == NULL) {
1517 1 : SPDK_ERRLOG("Unsupported raid level '%d'\n", level);
1518 1 : return -EINVAL;
1519 : }
1520 :
1521 17 : assert(module->base_bdevs_min != 0);
1522 17 : if (num_base_bdevs < module->base_bdevs_min) {
1523 0 : SPDK_ERRLOG("At least %u base devices required for %s\n",
1524 : module->base_bdevs_min,
1525 : raid_bdev_level_to_str(level));
1526 0 : return -EINVAL;
1527 : }
1528 :
1529 17 : switch (module->base_bdevs_constraint.type) {
1530 0 : case CONSTRAINT_MAX_BASE_BDEVS_REMOVED:
1531 0 : min_operational = num_base_bdevs - module->base_bdevs_constraint.value;
1532 0 : break;
1533 0 : case CONSTRAINT_MIN_BASE_BDEVS_OPERATIONAL:
1534 0 : min_operational = module->base_bdevs_constraint.value;
1535 0 : break;
1536 17 : case CONSTRAINT_UNSET:
1537 17 : if (module->base_bdevs_constraint.value != 0) {
1538 0 : SPDK_ERRLOG("Unexpected constraint value '%u' provided for raid bdev '%s'.\n",
1539 : (uint8_t)module->base_bdevs_constraint.value, name);
1540 0 : return -EINVAL;
1541 : }
1542 17 : min_operational = num_base_bdevs;
1543 17 : break;
1544 0 : default:
1545 0 : SPDK_ERRLOG("Unrecognised constraint type '%u' in module for raid level '%s'.\n",
1546 : (uint8_t)module->base_bdevs_constraint.type,
1547 : raid_bdev_level_to_str(module->level));
1548 0 : return -EINVAL;
1549 : };
1550 :
1551 17 : if (min_operational == 0 || min_operational > num_base_bdevs) {
1552 0 : SPDK_ERRLOG("Wrong constraint value for raid level '%s'.\n",
1553 : raid_bdev_level_to_str(module->level));
1554 0 : return -EINVAL;
1555 : }
1556 :
1557 17 : raid_bdev = calloc(1, sizeof(*raid_bdev));
1558 17 : if (!raid_bdev) {
1559 0 : SPDK_ERRLOG("Unable to allocate memory for raid bdev\n");
1560 0 : return -ENOMEM;
1561 : }
1562 :
1563 17 : raid_bdev->module = module;
1564 17 : raid_bdev->num_base_bdevs = num_base_bdevs;
1565 17 : raid_bdev->base_bdev_info = calloc(raid_bdev->num_base_bdevs,
1566 : sizeof(struct raid_base_bdev_info));
1567 17 : if (!raid_bdev->base_bdev_info) {
1568 0 : SPDK_ERRLOG("Unable able to allocate base bdev info\n");
1569 0 : raid_bdev_free(raid_bdev);
1570 0 : return -ENOMEM;
1571 : }
1572 :
1573 561 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
1574 544 : base_info->raid_bdev = raid_bdev;
1575 : }
1576 :
1577 : /* strip_size_kb is from the rpc param. strip_size is in blocks and used
1578 : * internally and set later.
1579 : */
1580 17 : raid_bdev->strip_size = 0;
1581 17 : raid_bdev->strip_size_kb = strip_size;
1582 17 : raid_bdev->state = RAID_BDEV_STATE_CONFIGURING;
1583 17 : raid_bdev->level = level;
1584 17 : raid_bdev->min_base_bdevs_operational = min_operational;
1585 17 : raid_bdev->superblock_enabled = superblock_enabled;
1586 :
1587 17 : raid_bdev_gen = &raid_bdev->bdev;
1588 :
1589 17 : raid_bdev_gen->name = strdup(name);
1590 17 : if (!raid_bdev_gen->name) {
1591 0 : SPDK_ERRLOG("Unable to allocate name for raid\n");
1592 0 : raid_bdev_free(raid_bdev);
1593 0 : return -ENOMEM;
1594 : }
1595 :
1596 17 : raid_bdev_gen->product_name = "Raid Volume";
1597 17 : raid_bdev_gen->ctxt = raid_bdev;
1598 17 : raid_bdev_gen->fn_table = &g_raid_bdev_fn_table;
1599 17 : raid_bdev_gen->module = &g_raid_if;
1600 17 : raid_bdev_gen->write_cache = 0;
1601 17 : spdk_uuid_copy(&raid_bdev_gen->uuid, uuid);
1602 :
1603 17 : TAILQ_INSERT_TAIL(&g_raid_bdev_list, raid_bdev, global_link);
1604 :
1605 17 : *raid_bdev_out = raid_bdev;
1606 :
1607 17 : return 0;
1608 : }
1609 :
1610 : /*
1611 : * brief:
1612 : * raid_bdev_create allocates raid bdev based on passed configuration
1613 : * params:
1614 : * name - name for raid bdev
1615 : * strip_size - strip size in KB
1616 : * num_base_bdevs - number of base bdevs
1617 : * level - raid level
1618 : * superblock_enabled - true if raid should have superblock
1619 : * uuid - uuid to set for the bdev
1620 : * raid_bdev_out - the created raid bdev
1621 : * returns:
1622 : * 0 - success
1623 : * non zero - failure
1624 : */
1625 : int
1626 20 : raid_bdev_create(const char *name, uint32_t strip_size, uint8_t num_base_bdevs,
1627 : enum raid_level level, bool superblock_enabled, const struct spdk_uuid *uuid,
1628 : struct raid_bdev **raid_bdev_out)
1629 : {
1630 20 : struct raid_bdev *raid_bdev;
1631 : int rc;
1632 :
1633 20 : assert(uuid != NULL);
1634 :
1635 20 : rc = _raid_bdev_create(name, strip_size, num_base_bdevs, level, superblock_enabled, uuid,
1636 : &raid_bdev);
1637 20 : if (rc != 0) {
1638 3 : return rc;
1639 : }
1640 :
1641 17 : if (superblock_enabled && spdk_uuid_is_null(uuid)) {
1642 : /* we need to have the uuid to store in the superblock before the bdev is registered */
1643 1 : spdk_uuid_generate(&raid_bdev->bdev.uuid);
1644 : }
1645 :
1646 17 : raid_bdev->num_base_bdevs_operational = num_base_bdevs;
1647 :
1648 17 : *raid_bdev_out = raid_bdev;
1649 :
1650 17 : return 0;
1651 : }
1652 :
1653 : static void
1654 0 : _raid_bdev_unregistering_cont(void *ctx)
1655 : {
1656 0 : struct raid_bdev *raid_bdev = ctx;
1657 :
1658 0 : spdk_bdev_close(raid_bdev->self_desc);
1659 0 : raid_bdev->self_desc = NULL;
1660 0 : }
1661 :
1662 : static void
1663 0 : raid_bdev_unregistering_cont(void *ctx)
1664 : {
1665 0 : spdk_thread_exec_msg(spdk_thread_get_app_thread(), _raid_bdev_unregistering_cont, ctx);
1666 0 : }
1667 :
1668 : static int
1669 0 : raid_bdev_process_add_finish_action(struct raid_bdev_process *process, spdk_msg_fn cb, void *cb_ctx)
1670 : {
1671 : struct raid_process_finish_action *finish_action;
1672 :
1673 0 : assert(spdk_get_thread() == process->thread);
1674 0 : assert(process->state < RAID_PROCESS_STATE_STOPPED);
1675 :
1676 0 : finish_action = calloc(1, sizeof(*finish_action));
1677 0 : if (finish_action == NULL) {
1678 0 : return -ENOMEM;
1679 : }
1680 :
1681 0 : finish_action->cb = cb;
1682 0 : finish_action->cb_ctx = cb_ctx;
1683 :
1684 0 : TAILQ_INSERT_TAIL(&process->finish_actions, finish_action, link);
1685 :
1686 0 : return 0;
1687 : }
1688 :
1689 : static void
1690 0 : raid_bdev_unregistering_stop_process(void *ctx)
1691 : {
1692 0 : struct raid_bdev_process *process = ctx;
1693 0 : struct raid_bdev *raid_bdev = process->raid_bdev;
1694 : int rc;
1695 :
1696 0 : process->state = RAID_PROCESS_STATE_STOPPING;
1697 0 : if (process->status == 0) {
1698 0 : process->status = -ECANCELED;
1699 : }
1700 :
1701 0 : rc = raid_bdev_process_add_finish_action(process, raid_bdev_unregistering_cont, raid_bdev);
1702 0 : if (rc != 0) {
1703 0 : SPDK_ERRLOG("Failed to add raid bdev '%s' process finish action: %s\n",
1704 : raid_bdev->bdev.name, spdk_strerror(-rc));
1705 : }
1706 0 : }
1707 :
1708 : static void
1709 0 : raid_bdev_event_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *event_ctx)
1710 : {
1711 0 : struct raid_bdev *raid_bdev = event_ctx;
1712 :
1713 0 : if (type == SPDK_BDEV_EVENT_REMOVE) {
1714 0 : if (raid_bdev->process != NULL) {
1715 0 : spdk_thread_send_msg(raid_bdev->process->thread, raid_bdev_unregistering_stop_process,
1716 0 : raid_bdev->process);
1717 : } else {
1718 0 : raid_bdev_unregistering_cont(raid_bdev);
1719 : }
1720 : }
1721 0 : }
1722 :
1723 : static void
1724 14 : raid_bdev_configure_cont(struct raid_bdev *raid_bdev)
1725 : {
1726 14 : struct spdk_bdev *raid_bdev_gen = &raid_bdev->bdev;
1727 : int rc;
1728 :
1729 14 : raid_bdev->state = RAID_BDEV_STATE_ONLINE;
1730 14 : SPDK_DEBUGLOG(bdev_raid, "io device register %p\n", raid_bdev);
1731 14 : SPDK_DEBUGLOG(bdev_raid, "blockcnt %" PRIu64 ", blocklen %u\n",
1732 : raid_bdev_gen->blockcnt, raid_bdev_gen->blocklen);
1733 14 : spdk_io_device_register(raid_bdev, raid_bdev_create_cb, raid_bdev_destroy_cb,
1734 : sizeof(struct raid_bdev_io_channel),
1735 14 : raid_bdev_gen->name);
1736 14 : rc = spdk_bdev_register(raid_bdev_gen);
1737 14 : if (rc != 0) {
1738 0 : SPDK_ERRLOG("Failed to register raid bdev '%s': %s\n",
1739 : raid_bdev_gen->name, spdk_strerror(-rc));
1740 0 : goto out;
1741 : }
1742 :
1743 : /*
1744 : * Open the bdev internally to delay unregistering if we need to stop a background process
1745 : * first. The process may still need to unquiesce a range but it will fail because the
1746 : * bdev's internal.spinlock is destroyed by the time the destruct callback is reached.
1747 : * During application shutdown, bdevs automatically get unregistered by the bdev layer
1748 : * so this is the only way currently to do this correctly.
1749 : * TODO: try to handle this correctly in bdev layer instead.
1750 : */
1751 14 : rc = spdk_bdev_open_ext(raid_bdev_gen->name, false, raid_bdev_event_cb, raid_bdev,
1752 : &raid_bdev->self_desc);
1753 14 : if (rc != 0) {
1754 0 : SPDK_ERRLOG("Failed to open raid bdev '%s': %s\n",
1755 : raid_bdev_gen->name, spdk_strerror(-rc));
1756 0 : spdk_bdev_unregister(raid_bdev_gen, NULL, NULL);
1757 0 : goto out;
1758 : }
1759 :
1760 14 : SPDK_DEBUGLOG(bdev_raid, "raid bdev generic %p\n", raid_bdev_gen);
1761 14 : SPDK_DEBUGLOG(bdev_raid, "raid bdev is created with name %s, raid_bdev %p\n",
1762 : raid_bdev_gen->name, raid_bdev);
1763 14 : out:
1764 14 : if (rc != 0) {
1765 0 : if (raid_bdev->module->stop != NULL) {
1766 0 : raid_bdev->module->stop(raid_bdev);
1767 : }
1768 0 : spdk_io_device_unregister(raid_bdev, NULL);
1769 0 : raid_bdev->state = RAID_BDEV_STATE_CONFIGURING;
1770 : }
1771 :
1772 14 : if (raid_bdev->configure_cb != NULL) {
1773 14 : raid_bdev->configure_cb(raid_bdev->configure_cb_ctx, rc);
1774 14 : raid_bdev->configure_cb = NULL;
1775 : }
1776 14 : }
1777 :
1778 : static void
1779 1 : raid_bdev_configure_write_sb_cb(int status, struct raid_bdev *raid_bdev, void *ctx)
1780 : {
1781 1 : if (status == 0) {
1782 1 : raid_bdev_configure_cont(raid_bdev);
1783 : } else {
1784 0 : SPDK_ERRLOG("Failed to write raid bdev '%s' superblock: %s\n",
1785 : raid_bdev->bdev.name, spdk_strerror(-status));
1786 0 : if (raid_bdev->module->stop != NULL) {
1787 0 : raid_bdev->module->stop(raid_bdev);
1788 : }
1789 0 : if (raid_bdev->configure_cb != NULL) {
1790 0 : raid_bdev->configure_cb(raid_bdev->configure_cb_ctx, status);
1791 0 : raid_bdev->configure_cb = NULL;
1792 : }
1793 : }
1794 1 : }
1795 :
1796 : /*
1797 : * brief:
1798 : * If raid bdev config is complete, then only register the raid bdev to
1799 : * bdev layer and remove this raid bdev from configuring list and
1800 : * insert the raid bdev to configured list
1801 : * params:
1802 : * raid_bdev - pointer to raid bdev
1803 : * returns:
1804 : * 0 - success
1805 : * non zero - failure
1806 : */
1807 : static int
1808 14 : raid_bdev_configure(struct raid_bdev *raid_bdev, raid_bdev_configure_cb cb, void *cb_ctx)
1809 : {
1810 14 : uint32_t data_block_size = spdk_bdev_get_data_block_size(&raid_bdev->bdev);
1811 : int rc;
1812 :
1813 14 : assert(raid_bdev->state == RAID_BDEV_STATE_CONFIGURING);
1814 14 : assert(raid_bdev->num_base_bdevs_discovered == raid_bdev->num_base_bdevs_operational);
1815 14 : assert(raid_bdev->bdev.blocklen > 0);
1816 :
1817 : /* The strip_size_kb is read in from user in KB. Convert to blocks here for
1818 : * internal use.
1819 : */
1820 14 : raid_bdev->strip_size = (raid_bdev->strip_size_kb * 1024) / data_block_size;
1821 14 : if (raid_bdev->strip_size == 0 && raid_bdev->level != RAID1) {
1822 0 : SPDK_ERRLOG("Strip size cannot be smaller than the device block size\n");
1823 0 : return -EINVAL;
1824 : }
1825 14 : raid_bdev->strip_size_shift = spdk_u32log2(raid_bdev->strip_size);
1826 :
1827 14 : rc = raid_bdev->module->start(raid_bdev);
1828 14 : if (rc != 0) {
1829 0 : SPDK_ERRLOG("raid module startup callback failed\n");
1830 0 : return rc;
1831 : }
1832 :
1833 14 : assert(raid_bdev->configure_cb == NULL);
1834 14 : raid_bdev->configure_cb = cb;
1835 14 : raid_bdev->configure_cb_ctx = cb_ctx;
1836 :
1837 14 : if (raid_bdev->superblock_enabled) {
1838 1 : if (raid_bdev->sb == NULL) {
1839 1 : rc = raid_bdev_alloc_superblock(raid_bdev, data_block_size);
1840 1 : if (rc == 0) {
1841 1 : raid_bdev_init_superblock(raid_bdev);
1842 : }
1843 : } else {
1844 0 : assert(spdk_uuid_compare(&raid_bdev->sb->uuid, &raid_bdev->bdev.uuid) == 0);
1845 0 : if (raid_bdev->sb->block_size != data_block_size) {
1846 0 : SPDK_ERRLOG("blocklen does not match value in superblock\n");
1847 0 : rc = -EINVAL;
1848 : }
1849 0 : if (raid_bdev->sb->raid_size != raid_bdev->bdev.blockcnt) {
1850 0 : SPDK_ERRLOG("blockcnt does not match value in superblock\n");
1851 0 : rc = -EINVAL;
1852 : }
1853 : }
1854 :
1855 1 : if (rc != 0) {
1856 0 : raid_bdev->configure_cb = NULL;
1857 0 : if (raid_bdev->module->stop != NULL) {
1858 0 : raid_bdev->module->stop(raid_bdev);
1859 : }
1860 0 : return rc;
1861 : }
1862 :
1863 1 : raid_bdev_write_superblock(raid_bdev, raid_bdev_configure_write_sb_cb, NULL);
1864 : } else {
1865 13 : raid_bdev_configure_cont(raid_bdev);
1866 : }
1867 :
1868 14 : return 0;
1869 : }
1870 :
1871 : /*
1872 : * brief:
1873 : * If raid bdev is online and registered, change the bdev state to
1874 : * configuring and unregister this raid device. Queue this raid device
1875 : * in configuring list
1876 : * params:
1877 : * raid_bdev - pointer to raid bdev
1878 : * cb_fn - callback function
1879 : * cb_arg - argument to callback function
1880 : * returns:
1881 : * none
1882 : */
1883 : static void
1884 14 : raid_bdev_deconfigure(struct raid_bdev *raid_bdev, raid_bdev_destruct_cb cb_fn,
1885 : void *cb_arg)
1886 : {
1887 14 : if (raid_bdev->state != RAID_BDEV_STATE_ONLINE) {
1888 0 : if (cb_fn) {
1889 0 : cb_fn(cb_arg, 0);
1890 : }
1891 0 : return;
1892 : }
1893 :
1894 14 : raid_bdev->state = RAID_BDEV_STATE_OFFLINE;
1895 14 : SPDK_DEBUGLOG(bdev_raid, "raid bdev state changing from online to offline\n");
1896 :
1897 14 : spdk_bdev_unregister(&raid_bdev->bdev, cb_fn, cb_arg);
1898 : }
1899 :
1900 : /*
1901 : * brief:
1902 : * raid_bdev_find_base_info_by_bdev function finds the base bdev info by bdev.
1903 : * params:
1904 : * base_bdev - pointer to base bdev
1905 : * returns:
1906 : * base bdev info if found, otherwise NULL.
1907 : */
1908 : static struct raid_base_bdev_info *
1909 0 : raid_bdev_find_base_info_by_bdev(struct spdk_bdev *base_bdev)
1910 : {
1911 : struct raid_bdev *raid_bdev;
1912 : struct raid_base_bdev_info *base_info;
1913 :
1914 0 : TAILQ_FOREACH(raid_bdev, &g_raid_bdev_list, global_link) {
1915 0 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
1916 0 : if (base_info->desc != NULL &&
1917 0 : spdk_bdev_desc_get_bdev(base_info->desc) == base_bdev) {
1918 0 : return base_info;
1919 : }
1920 : }
1921 : }
1922 :
1923 0 : return NULL;
1924 : }
1925 :
1926 : static void
1927 0 : raid_bdev_remove_base_bdev_done(struct raid_base_bdev_info *base_info, int status)
1928 : {
1929 0 : struct raid_bdev *raid_bdev = base_info->raid_bdev;
1930 :
1931 0 : assert(base_info->remove_scheduled);
1932 0 : base_info->remove_scheduled = false;
1933 :
1934 0 : if (status == 0) {
1935 0 : raid_bdev->num_base_bdevs_operational--;
1936 0 : if (raid_bdev->num_base_bdevs_operational < raid_bdev->min_base_bdevs_operational) {
1937 : /* There is not enough base bdevs to keep the raid bdev operational. */
1938 0 : raid_bdev_deconfigure(raid_bdev, base_info->remove_cb, base_info->remove_cb_ctx);
1939 0 : return;
1940 : }
1941 : }
1942 :
1943 0 : if (base_info->remove_cb != NULL) {
1944 0 : base_info->remove_cb(base_info->remove_cb_ctx, status);
1945 : }
1946 : }
1947 :
1948 : static void
1949 0 : raid_bdev_remove_base_bdev_on_unquiesced(void *ctx, int status)
1950 : {
1951 0 : struct raid_base_bdev_info *base_info = ctx;
1952 0 : struct raid_bdev *raid_bdev = base_info->raid_bdev;
1953 :
1954 0 : if (status != 0) {
1955 0 : SPDK_ERRLOG("Failed to unquiesce raid bdev %s: %s\n",
1956 : raid_bdev->bdev.name, spdk_strerror(-status));
1957 : }
1958 :
1959 0 : raid_bdev_remove_base_bdev_done(base_info, status);
1960 0 : }
1961 :
1962 : static void
1963 0 : raid_bdev_channel_remove_base_bdev(struct spdk_io_channel_iter *i)
1964 : {
1965 0 : struct raid_base_bdev_info *base_info = spdk_io_channel_iter_get_ctx(i);
1966 0 : struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i);
1967 0 : struct raid_bdev_io_channel *raid_ch = spdk_io_channel_get_ctx(ch);
1968 0 : uint8_t idx = raid_bdev_base_bdev_slot(base_info);
1969 :
1970 0 : SPDK_DEBUGLOG(bdev_raid, "slot: %u raid_ch: %p\n", idx, raid_ch);
1971 :
1972 0 : if (raid_ch->base_channel[idx] != NULL) {
1973 0 : spdk_put_io_channel(raid_ch->base_channel[idx]);
1974 0 : raid_ch->base_channel[idx] = NULL;
1975 : }
1976 :
1977 0 : if (raid_ch->process.ch_processed != NULL) {
1978 0 : raid_ch->process.ch_processed->base_channel[idx] = NULL;
1979 : }
1980 :
1981 0 : spdk_for_each_channel_continue(i, 0);
1982 0 : }
1983 :
1984 : static void
1985 0 : raid_bdev_channels_remove_base_bdev_done(struct spdk_io_channel_iter *i, int status)
1986 : {
1987 0 : struct raid_base_bdev_info *base_info = spdk_io_channel_iter_get_ctx(i);
1988 0 : struct raid_bdev *raid_bdev = base_info->raid_bdev;
1989 :
1990 0 : raid_bdev_free_base_bdev_resource(base_info);
1991 :
1992 0 : spdk_bdev_unquiesce(&raid_bdev->bdev, &g_raid_if, raid_bdev_remove_base_bdev_on_unquiesced,
1993 : base_info);
1994 0 : }
1995 :
1996 : static void
1997 0 : raid_bdev_remove_base_bdev_cont(struct raid_base_bdev_info *base_info)
1998 : {
1999 0 : raid_bdev_deconfigure_base_bdev(base_info);
2000 :
2001 0 : spdk_for_each_channel(base_info->raid_bdev, raid_bdev_channel_remove_base_bdev, base_info,
2002 : raid_bdev_channels_remove_base_bdev_done);
2003 0 : }
2004 :
2005 : static void
2006 0 : raid_bdev_remove_base_bdev_write_sb_cb(int status, struct raid_bdev *raid_bdev, void *ctx)
2007 : {
2008 0 : struct raid_base_bdev_info *base_info = ctx;
2009 :
2010 0 : if (status != 0) {
2011 0 : SPDK_ERRLOG("Failed to write raid bdev '%s' superblock: %s\n",
2012 : raid_bdev->bdev.name, spdk_strerror(-status));
2013 0 : raid_bdev_remove_base_bdev_done(base_info, status);
2014 0 : return;
2015 : }
2016 :
2017 0 : raid_bdev_remove_base_bdev_cont(base_info);
2018 : }
2019 :
2020 : static void
2021 0 : raid_bdev_remove_base_bdev_on_quiesced(void *ctx, int status)
2022 : {
2023 0 : struct raid_base_bdev_info *base_info = ctx;
2024 0 : struct raid_bdev *raid_bdev = base_info->raid_bdev;
2025 :
2026 0 : if (status != 0) {
2027 0 : SPDK_ERRLOG("Failed to quiesce raid bdev %s: %s\n",
2028 : raid_bdev->bdev.name, spdk_strerror(-status));
2029 0 : raid_bdev_remove_base_bdev_done(base_info, status);
2030 0 : return;
2031 : }
2032 :
2033 0 : if (raid_bdev->sb) {
2034 0 : struct raid_bdev_superblock *sb = raid_bdev->sb;
2035 0 : uint8_t slot = raid_bdev_base_bdev_slot(base_info);
2036 : uint8_t i;
2037 :
2038 0 : for (i = 0; i < sb->base_bdevs_size; i++) {
2039 0 : struct raid_bdev_sb_base_bdev *sb_base_bdev = &sb->base_bdevs[i];
2040 :
2041 0 : if (sb_base_bdev->state == RAID_SB_BASE_BDEV_CONFIGURED &&
2042 0 : sb_base_bdev->slot == slot) {
2043 0 : if (base_info->is_failed) {
2044 0 : sb_base_bdev->state = RAID_SB_BASE_BDEV_FAILED;
2045 : } else {
2046 0 : sb_base_bdev->state = RAID_SB_BASE_BDEV_MISSING;
2047 : }
2048 :
2049 0 : raid_bdev_write_superblock(raid_bdev, raid_bdev_remove_base_bdev_write_sb_cb, base_info);
2050 0 : return;
2051 : }
2052 : }
2053 : }
2054 :
2055 0 : raid_bdev_remove_base_bdev_cont(base_info);
2056 : }
2057 :
2058 : static int
2059 0 : raid_bdev_remove_base_bdev_quiesce(struct raid_base_bdev_info *base_info)
2060 : {
2061 0 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
2062 :
2063 0 : return spdk_bdev_quiesce(&base_info->raid_bdev->bdev, &g_raid_if,
2064 : raid_bdev_remove_base_bdev_on_quiesced, base_info);
2065 : }
2066 :
2067 : struct raid_bdev_process_base_bdev_remove_ctx {
2068 : struct raid_bdev_process *process;
2069 : struct raid_base_bdev_info *base_info;
2070 : uint8_t num_base_bdevs_operational;
2071 : };
2072 :
2073 : static void
2074 0 : _raid_bdev_process_base_bdev_remove_cont(void *ctx)
2075 : {
2076 0 : struct raid_base_bdev_info *base_info = ctx;
2077 : int ret;
2078 :
2079 0 : ret = raid_bdev_remove_base_bdev_quiesce(base_info);
2080 0 : if (ret != 0) {
2081 0 : raid_bdev_remove_base_bdev_done(base_info, ret);
2082 : }
2083 0 : }
2084 :
2085 : static void
2086 0 : raid_bdev_process_base_bdev_remove_cont(void *_ctx)
2087 : {
2088 0 : struct raid_bdev_process_base_bdev_remove_ctx *ctx = _ctx;
2089 0 : struct raid_base_bdev_info *base_info = ctx->base_info;
2090 :
2091 0 : free(ctx);
2092 :
2093 0 : spdk_thread_send_msg(spdk_thread_get_app_thread(), _raid_bdev_process_base_bdev_remove_cont,
2094 : base_info);
2095 0 : }
2096 :
2097 : static void
2098 0 : _raid_bdev_process_base_bdev_remove(void *_ctx)
2099 : {
2100 0 : struct raid_bdev_process_base_bdev_remove_ctx *ctx = _ctx;
2101 0 : struct raid_bdev_process *process = ctx->process;
2102 : int ret;
2103 :
2104 0 : if (ctx->base_info != process->target &&
2105 0 : ctx->num_base_bdevs_operational > process->raid_bdev->min_base_bdevs_operational) {
2106 : /* process doesn't need to be stopped */
2107 0 : raid_bdev_process_base_bdev_remove_cont(ctx);
2108 0 : return;
2109 : }
2110 :
2111 0 : assert(process->state > RAID_PROCESS_STATE_INIT &&
2112 : process->state < RAID_PROCESS_STATE_STOPPED);
2113 :
2114 0 : ret = raid_bdev_process_add_finish_action(process, raid_bdev_process_base_bdev_remove_cont, ctx);
2115 0 : if (ret != 0) {
2116 0 : raid_bdev_remove_base_bdev_done(ctx->base_info, ret);
2117 0 : free(ctx);
2118 0 : return;
2119 : }
2120 :
2121 0 : process->state = RAID_PROCESS_STATE_STOPPING;
2122 :
2123 0 : if (process->status == 0) {
2124 0 : process->status = -ENODEV;
2125 : }
2126 : }
2127 :
2128 : static int
2129 0 : raid_bdev_process_base_bdev_remove(struct raid_bdev_process *process,
2130 : struct raid_base_bdev_info *base_info)
2131 : {
2132 : struct raid_bdev_process_base_bdev_remove_ctx *ctx;
2133 :
2134 0 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
2135 :
2136 0 : ctx = calloc(1, sizeof(*ctx));
2137 0 : if (ctx == NULL) {
2138 0 : return -ENOMEM;
2139 : }
2140 :
2141 : /*
2142 : * We have to send the process and num_base_bdevs_operational in the message ctx
2143 : * because the process thread should not access raid_bdev's properties. Particularly,
2144 : * raid_bdev->process may be cleared by the time the message is handled, but ctx->process
2145 : * will still be valid until the process is fully stopped.
2146 : */
2147 0 : ctx->base_info = base_info;
2148 0 : ctx->process = process;
2149 : /*
2150 : * raid_bdev->num_base_bdevs_operational can't be used here because it is decremented
2151 : * after the removal and more than one base bdev may be removed at the same time
2152 : */
2153 0 : RAID_FOR_EACH_BASE_BDEV(process->raid_bdev, base_info) {
2154 0 : if (base_info->is_configured && !base_info->remove_scheduled) {
2155 0 : ctx->num_base_bdevs_operational++;
2156 : }
2157 : }
2158 :
2159 0 : spdk_thread_send_msg(process->thread, _raid_bdev_process_base_bdev_remove, ctx);
2160 :
2161 0 : return 0;
2162 : }
2163 :
2164 : static int
2165 0 : _raid_bdev_remove_base_bdev(struct raid_base_bdev_info *base_info,
2166 : raid_base_bdev_cb cb_fn, void *cb_ctx)
2167 : {
2168 0 : struct raid_bdev *raid_bdev = base_info->raid_bdev;
2169 0 : int ret = 0;
2170 :
2171 0 : SPDK_DEBUGLOG(bdev_raid, "%s\n", base_info->name);
2172 :
2173 0 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
2174 :
2175 0 : if (base_info->remove_scheduled || !base_info->is_configured) {
2176 0 : return -ENODEV;
2177 : }
2178 :
2179 0 : assert(base_info->desc);
2180 0 : base_info->remove_scheduled = true;
2181 :
2182 0 : if (raid_bdev->state != RAID_BDEV_STATE_ONLINE) {
2183 : /*
2184 : * As raid bdev is not registered yet or already unregistered,
2185 : * so cleanup should be done here itself.
2186 : *
2187 : * Removing a base bdev at this stage does not change the number of operational
2188 : * base bdevs, only the number of discovered base bdevs.
2189 : */
2190 0 : raid_bdev_free_base_bdev_resource(base_info);
2191 0 : base_info->remove_scheduled = false;
2192 0 : if (raid_bdev->num_base_bdevs_discovered == 0 &&
2193 0 : raid_bdev->state == RAID_BDEV_STATE_OFFLINE) {
2194 : /* There is no base bdev for this raid, so free the raid device. */
2195 0 : raid_bdev_cleanup_and_free(raid_bdev);
2196 : }
2197 0 : if (cb_fn != NULL) {
2198 0 : cb_fn(cb_ctx, 0);
2199 : }
2200 0 : } else if (raid_bdev->min_base_bdevs_operational == raid_bdev->num_base_bdevs) {
2201 : /* This raid bdev does not tolerate removing a base bdev. */
2202 0 : raid_bdev->num_base_bdevs_operational--;
2203 0 : raid_bdev_deconfigure(raid_bdev, cb_fn, cb_ctx);
2204 : } else {
2205 0 : base_info->remove_cb = cb_fn;
2206 0 : base_info->remove_cb_ctx = cb_ctx;
2207 :
2208 0 : if (raid_bdev->process != NULL) {
2209 0 : ret = raid_bdev_process_base_bdev_remove(raid_bdev->process, base_info);
2210 : } else {
2211 0 : ret = raid_bdev_remove_base_bdev_quiesce(base_info);
2212 : }
2213 :
2214 0 : if (ret != 0) {
2215 0 : base_info->remove_scheduled = false;
2216 : }
2217 : }
2218 :
2219 0 : return ret;
2220 : }
2221 :
2222 : /*
2223 : * brief:
2224 : * raid_bdev_remove_base_bdev function is called by below layers when base_bdev
2225 : * is removed. This function checks if this base bdev is part of any raid bdev
2226 : * or not. If yes, it takes necessary action on that particular raid bdev.
2227 : * params:
2228 : * base_bdev - pointer to base bdev which got removed
2229 : * cb_fn - callback function
2230 : * cb_arg - argument to callback function
2231 : * returns:
2232 : * 0 - success
2233 : * non zero - failure
2234 : */
2235 : int
2236 0 : raid_bdev_remove_base_bdev(struct spdk_bdev *base_bdev, raid_base_bdev_cb cb_fn, void *cb_ctx)
2237 : {
2238 : struct raid_base_bdev_info *base_info;
2239 :
2240 : /* Find the raid_bdev which has claimed this base_bdev */
2241 0 : base_info = raid_bdev_find_base_info_by_bdev(base_bdev);
2242 0 : if (!base_info) {
2243 0 : SPDK_ERRLOG("bdev to remove '%s' not found\n", base_bdev->name);
2244 0 : return -ENODEV;
2245 : }
2246 :
2247 0 : return _raid_bdev_remove_base_bdev(base_info, cb_fn, cb_ctx);
2248 : }
2249 :
2250 : static void
2251 0 : raid_bdev_fail_base_remove_cb(void *ctx, int status)
2252 : {
2253 0 : struct raid_base_bdev_info *base_info = ctx;
2254 :
2255 0 : if (status != 0) {
2256 0 : SPDK_WARNLOG("Failed to remove base bdev %s\n", base_info->name);
2257 0 : base_info->is_failed = false;
2258 : }
2259 0 : }
2260 :
2261 : static void
2262 0 : _raid_bdev_fail_base_bdev(void *ctx)
2263 : {
2264 0 : struct raid_base_bdev_info *base_info = ctx;
2265 : int rc;
2266 :
2267 0 : if (base_info->is_failed) {
2268 0 : return;
2269 : }
2270 0 : base_info->is_failed = true;
2271 :
2272 0 : SPDK_NOTICELOG("Failing base bdev in slot %d ('%s') of raid bdev '%s'\n",
2273 : raid_bdev_base_bdev_slot(base_info), base_info->name, base_info->raid_bdev->bdev.name);
2274 :
2275 0 : rc = _raid_bdev_remove_base_bdev(base_info, raid_bdev_fail_base_remove_cb, base_info);
2276 0 : if (rc != 0) {
2277 0 : raid_bdev_fail_base_remove_cb(base_info, rc);
2278 : }
2279 : }
2280 :
2281 : void
2282 0 : raid_bdev_fail_base_bdev(struct raid_base_bdev_info *base_info)
2283 : {
2284 0 : spdk_thread_exec_msg(spdk_thread_get_app_thread(), _raid_bdev_fail_base_bdev, base_info);
2285 0 : }
2286 :
2287 : static void
2288 0 : raid_bdev_resize_write_sb_cb(int status, struct raid_bdev *raid_bdev, void *ctx)
2289 : {
2290 0 : if (status != 0) {
2291 0 : SPDK_ERRLOG("Failed to write raid bdev '%s' superblock after resizing the bdev: %s\n",
2292 : raid_bdev->bdev.name, spdk_strerror(-status));
2293 : }
2294 0 : }
2295 :
2296 : /*
2297 : * brief:
2298 : * raid_bdev_resize_base_bdev function is called by below layers when base_bdev
2299 : * is resized. This function checks if the smallest size of the base_bdevs is changed.
2300 : * If yes, call module handler to resize the raid_bdev if implemented.
2301 : * params:
2302 : * base_bdev - pointer to base bdev which got resized.
2303 : * returns:
2304 : * none
2305 : */
2306 : static void
2307 0 : raid_bdev_resize_base_bdev(struct spdk_bdev *base_bdev)
2308 : {
2309 : struct raid_bdev *raid_bdev;
2310 : struct raid_base_bdev_info *base_info;
2311 : uint64_t blockcnt_old;
2312 :
2313 0 : SPDK_DEBUGLOG(bdev_raid, "raid_bdev_resize_base_bdev\n");
2314 :
2315 0 : base_info = raid_bdev_find_base_info_by_bdev(base_bdev);
2316 :
2317 : /* Find the raid_bdev which has claimed this base_bdev */
2318 0 : if (!base_info) {
2319 0 : SPDK_ERRLOG("raid_bdev whose base_bdev '%s' not found\n", base_bdev->name);
2320 0 : return;
2321 : }
2322 0 : raid_bdev = base_info->raid_bdev;
2323 :
2324 0 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
2325 :
2326 0 : SPDK_NOTICELOG("base_bdev '%s' was resized: old size %" PRIu64 ", new size %" PRIu64 "\n",
2327 : base_bdev->name, base_info->blockcnt, base_bdev->blockcnt);
2328 :
2329 0 : base_info->blockcnt = base_bdev->blockcnt;
2330 :
2331 0 : if (!raid_bdev->module->resize) {
2332 0 : return;
2333 : }
2334 :
2335 0 : blockcnt_old = raid_bdev->bdev.blockcnt;
2336 0 : if (raid_bdev->module->resize(raid_bdev) == false) {
2337 0 : return;
2338 : }
2339 :
2340 0 : SPDK_NOTICELOG("raid bdev '%s': block count was changed from %" PRIu64 " to %" PRIu64 "\n",
2341 : raid_bdev->bdev.name, blockcnt_old, raid_bdev->bdev.blockcnt);
2342 :
2343 0 : if (raid_bdev->superblock_enabled) {
2344 0 : struct raid_bdev_superblock *sb = raid_bdev->sb;
2345 : uint8_t i;
2346 :
2347 0 : for (i = 0; i < sb->base_bdevs_size; i++) {
2348 0 : struct raid_bdev_sb_base_bdev *sb_base_bdev = &sb->base_bdevs[i];
2349 :
2350 0 : if (sb_base_bdev->slot < raid_bdev->num_base_bdevs) {
2351 0 : base_info = &raid_bdev->base_bdev_info[sb_base_bdev->slot];
2352 0 : sb_base_bdev->data_size = base_info->data_size;
2353 : }
2354 : }
2355 0 : sb->raid_size = raid_bdev->bdev.blockcnt;
2356 0 : raid_bdev_write_superblock(raid_bdev, raid_bdev_resize_write_sb_cb, NULL);
2357 : }
2358 : }
2359 :
2360 : /*
2361 : * brief:
2362 : * raid_bdev_event_base_bdev function is called by below layers when base_bdev
2363 : * triggers asynchronous event.
2364 : * params:
2365 : * type - event details.
2366 : * bdev - bdev that triggered event.
2367 : * event_ctx - context for event.
2368 : * returns:
2369 : * none
2370 : */
2371 : static void
2372 0 : raid_bdev_event_base_bdev(enum spdk_bdev_event_type type, struct spdk_bdev *bdev,
2373 : void *event_ctx)
2374 : {
2375 : int rc;
2376 :
2377 0 : switch (type) {
2378 0 : case SPDK_BDEV_EVENT_REMOVE:
2379 0 : rc = raid_bdev_remove_base_bdev(bdev, NULL, NULL);
2380 0 : if (rc != 0) {
2381 0 : SPDK_ERRLOG("Failed to remove base bdev %s: %s\n",
2382 : spdk_bdev_get_name(bdev), spdk_strerror(-rc));
2383 : }
2384 0 : break;
2385 0 : case SPDK_BDEV_EVENT_RESIZE:
2386 0 : raid_bdev_resize_base_bdev(bdev);
2387 0 : break;
2388 0 : default:
2389 0 : SPDK_NOTICELOG("Unsupported bdev event: type %d\n", type);
2390 0 : break;
2391 : }
2392 0 : }
2393 :
2394 : /*
2395 : * brief:
2396 : * Deletes the specified raid bdev
2397 : * params:
2398 : * raid_bdev - pointer to raid bdev
2399 : * cb_fn - callback function
2400 : * cb_arg - argument to callback function
2401 : */
2402 : void
2403 16 : raid_bdev_delete(struct raid_bdev *raid_bdev, raid_bdev_destruct_cb cb_fn, void *cb_arg)
2404 : {
2405 : struct raid_base_bdev_info *base_info;
2406 :
2407 16 : SPDK_DEBUGLOG(bdev_raid, "delete raid bdev: %s\n", raid_bdev->bdev.name);
2408 :
2409 16 : if (raid_bdev->destroy_started) {
2410 0 : SPDK_DEBUGLOG(bdev_raid, "destroying raid bdev %s is already started\n",
2411 : raid_bdev->bdev.name);
2412 0 : if (cb_fn) {
2413 0 : cb_fn(cb_arg, -EALREADY);
2414 : }
2415 0 : return;
2416 : }
2417 :
2418 16 : raid_bdev->destroy_started = true;
2419 :
2420 528 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
2421 512 : base_info->remove_scheduled = true;
2422 :
2423 512 : if (raid_bdev->state != RAID_BDEV_STATE_ONLINE) {
2424 : /*
2425 : * As raid bdev is not registered yet or already unregistered,
2426 : * so cleanup should be done here itself.
2427 : */
2428 64 : raid_bdev_free_base_bdev_resource(base_info);
2429 : }
2430 : }
2431 :
2432 16 : if (raid_bdev->num_base_bdevs_discovered == 0) {
2433 : /* There is no base bdev for this raid, so free the raid device. */
2434 2 : raid_bdev_cleanup_and_free(raid_bdev);
2435 2 : if (cb_fn) {
2436 0 : cb_fn(cb_arg, 0);
2437 : }
2438 : } else {
2439 14 : raid_bdev_deconfigure(raid_bdev, cb_fn, cb_arg);
2440 : }
2441 : }
2442 :
2443 : static void
2444 0 : raid_bdev_process_finish_write_sb_cb(int status, struct raid_bdev *raid_bdev, void *ctx)
2445 : {
2446 0 : if (status != 0) {
2447 0 : SPDK_ERRLOG("Failed to write raid bdev '%s' superblock after background process finished: %s\n",
2448 : raid_bdev->bdev.name, spdk_strerror(-status));
2449 : }
2450 0 : }
2451 :
2452 : static void
2453 0 : raid_bdev_process_finish_write_sb(void *ctx)
2454 : {
2455 0 : struct raid_bdev *raid_bdev = ctx;
2456 0 : struct raid_bdev_superblock *sb = raid_bdev->sb;
2457 : struct raid_bdev_sb_base_bdev *sb_base_bdev;
2458 : struct raid_base_bdev_info *base_info;
2459 : uint8_t i;
2460 :
2461 0 : for (i = 0; i < sb->base_bdevs_size; i++) {
2462 0 : sb_base_bdev = &sb->base_bdevs[i];
2463 :
2464 0 : if (sb_base_bdev->state != RAID_SB_BASE_BDEV_CONFIGURED &&
2465 0 : sb_base_bdev->slot < raid_bdev->num_base_bdevs) {
2466 0 : base_info = &raid_bdev->base_bdev_info[sb_base_bdev->slot];
2467 0 : if (base_info->is_configured) {
2468 0 : sb_base_bdev->state = RAID_SB_BASE_BDEV_CONFIGURED;
2469 0 : sb_base_bdev->data_offset = base_info->data_offset;
2470 0 : spdk_uuid_copy(&sb_base_bdev->uuid, &base_info->uuid);
2471 : }
2472 : }
2473 : }
2474 :
2475 0 : raid_bdev_write_superblock(raid_bdev, raid_bdev_process_finish_write_sb_cb, NULL);
2476 0 : }
2477 :
2478 : static void raid_bdev_process_free(struct raid_bdev_process *process);
2479 :
2480 : static void
2481 2 : _raid_bdev_process_finish_done(void *ctx)
2482 : {
2483 2 : struct raid_bdev_process *process = ctx;
2484 : struct raid_process_finish_action *finish_action;
2485 :
2486 2 : while ((finish_action = TAILQ_FIRST(&process->finish_actions)) != NULL) {
2487 0 : TAILQ_REMOVE(&process->finish_actions, finish_action, link);
2488 0 : finish_action->cb(finish_action->cb_ctx);
2489 0 : free(finish_action);
2490 : }
2491 :
2492 2 : spdk_poller_unregister(&process->qos.process_continue_poller);
2493 :
2494 2 : raid_bdev_process_free(process);
2495 :
2496 2 : spdk_thread_exit(spdk_get_thread());
2497 2 : }
2498 :
2499 : static void
2500 0 : raid_bdev_process_finish_target_removed(void *ctx, int status)
2501 : {
2502 0 : struct raid_bdev_process *process = ctx;
2503 :
2504 0 : if (status != 0) {
2505 0 : SPDK_ERRLOG("Failed to remove target bdev: %s\n", spdk_strerror(-status));
2506 : }
2507 :
2508 0 : spdk_thread_send_msg(process->thread, _raid_bdev_process_finish_done, process);
2509 0 : }
2510 :
2511 : static void
2512 2 : raid_bdev_process_finish_unquiesced(void *ctx, int status)
2513 : {
2514 2 : struct raid_bdev_process *process = ctx;
2515 :
2516 2 : if (status != 0) {
2517 0 : SPDK_ERRLOG("Failed to unquiesce bdev: %s\n", spdk_strerror(-status));
2518 : }
2519 :
2520 2 : if (process->status != 0) {
2521 0 : status = _raid_bdev_remove_base_bdev(process->target, raid_bdev_process_finish_target_removed,
2522 : process);
2523 0 : if (status != 0) {
2524 0 : raid_bdev_process_finish_target_removed(process, status);
2525 : }
2526 0 : return;
2527 : }
2528 :
2529 2 : spdk_thread_send_msg(process->thread, _raid_bdev_process_finish_done, process);
2530 : }
2531 :
2532 : static void
2533 2 : raid_bdev_process_finish_unquiesce(void *ctx)
2534 : {
2535 2 : struct raid_bdev_process *process = ctx;
2536 : int rc;
2537 :
2538 2 : rc = spdk_bdev_unquiesce(&process->raid_bdev->bdev, &g_raid_if,
2539 : raid_bdev_process_finish_unquiesced, process);
2540 2 : if (rc != 0) {
2541 0 : raid_bdev_process_finish_unquiesced(process, rc);
2542 : }
2543 2 : }
2544 :
2545 : static void
2546 2 : raid_bdev_process_finish_done(void *ctx)
2547 : {
2548 2 : struct raid_bdev_process *process = ctx;
2549 2 : struct raid_bdev *raid_bdev = process->raid_bdev;
2550 :
2551 2 : if (process->raid_ch != NULL) {
2552 2 : spdk_put_io_channel(spdk_io_channel_from_ctx(process->raid_ch));
2553 : }
2554 :
2555 2 : process->state = RAID_PROCESS_STATE_STOPPED;
2556 :
2557 2 : if (process->status == 0) {
2558 2 : SPDK_NOTICELOG("Finished %s on raid bdev %s\n",
2559 : raid_bdev_process_to_str(process->type),
2560 : raid_bdev->bdev.name);
2561 2 : if (raid_bdev->superblock_enabled) {
2562 0 : spdk_thread_send_msg(spdk_thread_get_app_thread(),
2563 : raid_bdev_process_finish_write_sb,
2564 : raid_bdev);
2565 : }
2566 : } else {
2567 0 : SPDK_WARNLOG("Finished %s on raid bdev %s: %s\n",
2568 : raid_bdev_process_to_str(process->type),
2569 : raid_bdev->bdev.name,
2570 : spdk_strerror(-process->status));
2571 : }
2572 :
2573 2 : spdk_thread_send_msg(spdk_thread_get_app_thread(), raid_bdev_process_finish_unquiesce,
2574 : process);
2575 2 : }
2576 :
2577 : static void
2578 2 : __raid_bdev_process_finish(struct spdk_io_channel_iter *i, int status)
2579 : {
2580 2 : struct raid_bdev_process *process = spdk_io_channel_iter_get_ctx(i);
2581 :
2582 2 : spdk_thread_send_msg(process->thread, raid_bdev_process_finish_done, process);
2583 2 : }
2584 :
2585 : static void
2586 2 : raid_bdev_channel_process_finish(struct spdk_io_channel_iter *i)
2587 : {
2588 2 : struct raid_bdev_process *process = spdk_io_channel_iter_get_ctx(i);
2589 2 : struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i);
2590 2 : struct raid_bdev_io_channel *raid_ch = spdk_io_channel_get_ctx(ch);
2591 :
2592 2 : if (process->status == 0) {
2593 2 : uint8_t slot = raid_bdev_base_bdev_slot(process->target);
2594 :
2595 2 : raid_ch->base_channel[slot] = raid_ch->process.target_ch;
2596 2 : raid_ch->process.target_ch = NULL;
2597 : }
2598 :
2599 2 : raid_bdev_ch_process_cleanup(raid_ch);
2600 :
2601 2 : spdk_for_each_channel_continue(i, 0);
2602 2 : }
2603 :
2604 : static void
2605 2 : raid_bdev_process_finish_quiesced(void *ctx, int status)
2606 : {
2607 2 : struct raid_bdev_process *process = ctx;
2608 2 : struct raid_bdev *raid_bdev = process->raid_bdev;
2609 :
2610 2 : if (status != 0) {
2611 0 : SPDK_ERRLOG("Failed to quiesce bdev: %s\n", spdk_strerror(-status));
2612 0 : return;
2613 : }
2614 :
2615 2 : raid_bdev->process = NULL;
2616 2 : process->target->is_process_target = false;
2617 :
2618 2 : spdk_for_each_channel(process->raid_bdev, raid_bdev_channel_process_finish, process,
2619 : __raid_bdev_process_finish);
2620 : }
2621 :
2622 : static void
2623 2 : _raid_bdev_process_finish(void *ctx)
2624 : {
2625 2 : struct raid_bdev_process *process = ctx;
2626 : int rc;
2627 :
2628 2 : rc = spdk_bdev_quiesce(&process->raid_bdev->bdev, &g_raid_if,
2629 : raid_bdev_process_finish_quiesced, process);
2630 2 : if (rc != 0) {
2631 0 : raid_bdev_process_finish_quiesced(ctx, rc);
2632 : }
2633 2 : }
2634 :
2635 : static void
2636 2 : raid_bdev_process_do_finish(struct raid_bdev_process *process)
2637 : {
2638 2 : spdk_thread_send_msg(spdk_thread_get_app_thread(), _raid_bdev_process_finish, process);
2639 2 : }
2640 :
2641 : static void raid_bdev_process_unlock_window_range(struct raid_bdev_process *process);
2642 : static void raid_bdev_process_thread_run(struct raid_bdev_process *process);
2643 :
2644 : static void
2645 2 : raid_bdev_process_finish(struct raid_bdev_process *process, int status)
2646 : {
2647 2 : assert(spdk_get_thread() == process->thread);
2648 :
2649 2 : if (process->status == 0) {
2650 2 : process->status = status;
2651 : }
2652 :
2653 2 : if (process->state >= RAID_PROCESS_STATE_STOPPING) {
2654 0 : return;
2655 : }
2656 :
2657 2 : assert(process->state == RAID_PROCESS_STATE_RUNNING);
2658 2 : process->state = RAID_PROCESS_STATE_STOPPING;
2659 :
2660 2 : if (process->window_range_locked) {
2661 0 : raid_bdev_process_unlock_window_range(process);
2662 : } else {
2663 2 : raid_bdev_process_thread_run(process);
2664 : }
2665 : }
2666 :
2667 : static void
2668 2 : raid_bdev_process_window_range_unlocked(void *ctx, int status)
2669 : {
2670 2 : struct raid_bdev_process *process = ctx;
2671 :
2672 2 : if (status != 0) {
2673 0 : SPDK_ERRLOG("Failed to unlock LBA range: %s\n", spdk_strerror(-status));
2674 0 : raid_bdev_process_finish(process, status);
2675 0 : return;
2676 : }
2677 :
2678 2 : process->window_range_locked = false;
2679 2 : process->window_offset += process->window_size;
2680 :
2681 2 : raid_bdev_process_thread_run(process);
2682 : }
2683 :
2684 : static void
2685 2 : raid_bdev_process_unlock_window_range(struct raid_bdev_process *process)
2686 : {
2687 : int rc;
2688 :
2689 2 : assert(process->window_range_locked == true);
2690 :
2691 2 : rc = spdk_bdev_unquiesce_range(&process->raid_bdev->bdev, &g_raid_if,
2692 : process->window_offset, process->max_window_size,
2693 : raid_bdev_process_window_range_unlocked, process);
2694 2 : if (rc != 0) {
2695 0 : raid_bdev_process_window_range_unlocked(process, rc);
2696 : }
2697 2 : }
2698 :
2699 : static void
2700 2 : raid_bdev_process_channels_update_done(struct spdk_io_channel_iter *i, int status)
2701 : {
2702 2 : struct raid_bdev_process *process = spdk_io_channel_iter_get_ctx(i);
2703 :
2704 2 : raid_bdev_process_unlock_window_range(process);
2705 2 : }
2706 :
2707 : static void
2708 2 : raid_bdev_process_channel_update(struct spdk_io_channel_iter *i)
2709 : {
2710 2 : struct raid_bdev_process *process = spdk_io_channel_iter_get_ctx(i);
2711 2 : struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i);
2712 2 : struct raid_bdev_io_channel *raid_ch = spdk_io_channel_get_ctx(ch);
2713 :
2714 2 : raid_ch->process.offset = process->window_offset + process->window_size;
2715 :
2716 2 : spdk_for_each_channel_continue(i, 0);
2717 2 : }
2718 :
2719 : void
2720 2 : raid_bdev_process_request_complete(struct raid_bdev_process_request *process_req, int status)
2721 : {
2722 2 : struct raid_bdev_process *process = process_req->process;
2723 :
2724 2 : TAILQ_INSERT_TAIL(&process->requests, process_req, link);
2725 :
2726 2 : assert(spdk_get_thread() == process->thread);
2727 2 : assert(process->window_remaining >= process_req->num_blocks);
2728 :
2729 2 : if (status != 0) {
2730 0 : process->window_status = status;
2731 : }
2732 :
2733 2 : process->window_remaining -= process_req->num_blocks;
2734 2 : if (process->window_remaining == 0) {
2735 2 : if (process->window_status != 0) {
2736 0 : raid_bdev_process_finish(process, process->window_status);
2737 0 : return;
2738 : }
2739 :
2740 2 : spdk_for_each_channel(process->raid_bdev, raid_bdev_process_channel_update, process,
2741 : raid_bdev_process_channels_update_done);
2742 : }
2743 : }
2744 :
2745 : static int
2746 2 : raid_bdev_submit_process_request(struct raid_bdev_process *process, uint64_t offset_blocks,
2747 : uint32_t num_blocks)
2748 : {
2749 2 : struct raid_bdev *raid_bdev = process->raid_bdev;
2750 : struct raid_bdev_process_request *process_req;
2751 : int ret;
2752 :
2753 2 : process_req = TAILQ_FIRST(&process->requests);
2754 2 : if (process_req == NULL) {
2755 0 : assert(process->window_remaining > 0);
2756 0 : return 0;
2757 : }
2758 :
2759 2 : process_req->target = process->target;
2760 2 : process_req->target_ch = process->raid_ch->process.target_ch;
2761 2 : process_req->offset_blocks = offset_blocks;
2762 2 : process_req->num_blocks = num_blocks;
2763 2 : process_req->iov.iov_len = num_blocks * raid_bdev->bdev.blocklen;
2764 :
2765 2 : ret = raid_bdev->module->submit_process_request(process_req, process->raid_ch);
2766 2 : if (ret <= 0) {
2767 0 : if (ret < 0) {
2768 0 : SPDK_ERRLOG("Failed to submit process request on %s: %s\n",
2769 : raid_bdev->bdev.name, spdk_strerror(-ret));
2770 0 : process->window_status = ret;
2771 : }
2772 0 : return ret;
2773 : }
2774 :
2775 2 : process_req->num_blocks = ret;
2776 2 : TAILQ_REMOVE(&process->requests, process_req, link);
2777 :
2778 2 : return ret;
2779 : }
2780 :
2781 : static void
2782 2 : _raid_bdev_process_thread_run(struct raid_bdev_process *process)
2783 : {
2784 2 : struct raid_bdev *raid_bdev = process->raid_bdev;
2785 2 : uint64_t offset = process->window_offset;
2786 2 : const uint64_t offset_end = spdk_min(offset + process->max_window_size, raid_bdev->bdev.blockcnt);
2787 : int ret;
2788 :
2789 4 : while (offset < offset_end) {
2790 2 : ret = raid_bdev_submit_process_request(process, offset, offset_end - offset);
2791 2 : if (ret <= 0) {
2792 0 : break;
2793 : }
2794 :
2795 2 : process->window_remaining += ret;
2796 2 : offset += ret;
2797 : }
2798 :
2799 2 : if (process->window_remaining > 0) {
2800 2 : process->window_size = process->window_remaining;
2801 : } else {
2802 0 : raid_bdev_process_finish(process, process->window_status);
2803 : }
2804 2 : }
2805 :
2806 : static void
2807 2 : raid_bdev_process_window_range_locked(void *ctx, int status)
2808 : {
2809 2 : struct raid_bdev_process *process = ctx;
2810 :
2811 2 : if (status != 0) {
2812 0 : SPDK_ERRLOG("Failed to lock LBA range: %s\n", spdk_strerror(-status));
2813 0 : raid_bdev_process_finish(process, status);
2814 0 : return;
2815 : }
2816 :
2817 2 : process->window_range_locked = true;
2818 :
2819 2 : if (process->state == RAID_PROCESS_STATE_STOPPING) {
2820 0 : raid_bdev_process_unlock_window_range(process);
2821 0 : return;
2822 : }
2823 :
2824 2 : _raid_bdev_process_thread_run(process);
2825 : }
2826 :
2827 : static bool
2828 12 : raid_bdev_process_consume_token(struct raid_bdev_process *process)
2829 : {
2830 12 : struct raid_bdev *raid_bdev = process->raid_bdev;
2831 12 : uint64_t now = spdk_get_ticks();
2832 :
2833 12 : process->qos.bytes_available = spdk_min(process->qos.bytes_max,
2834 : process->qos.bytes_available +
2835 : (now - process->qos.last_tsc) * process->qos.bytes_per_tsc);
2836 12 : process->qos.last_tsc = now;
2837 12 : if (process->qos.bytes_available > 0.0) {
2838 1 : process->qos.bytes_available -= process->window_size * raid_bdev->bdev.blocklen;
2839 1 : return true;
2840 : }
2841 11 : return false;
2842 : }
2843 :
2844 : static bool
2845 13 : raid_bdev_process_lock_window_range(struct raid_bdev_process *process)
2846 : {
2847 13 : struct raid_bdev *raid_bdev = process->raid_bdev;
2848 : int rc;
2849 :
2850 13 : assert(process->window_range_locked == false);
2851 :
2852 13 : if (process->qos.enable_qos) {
2853 12 : if (raid_bdev_process_consume_token(process)) {
2854 1 : spdk_poller_pause(process->qos.process_continue_poller);
2855 : } else {
2856 11 : spdk_poller_resume(process->qos.process_continue_poller);
2857 11 : return false;
2858 : }
2859 : }
2860 :
2861 2 : rc = spdk_bdev_quiesce_range(&raid_bdev->bdev, &g_raid_if,
2862 : process->window_offset, process->max_window_size,
2863 : raid_bdev_process_window_range_locked, process);
2864 2 : if (rc != 0) {
2865 0 : raid_bdev_process_window_range_locked(process, rc);
2866 : }
2867 2 : return true;
2868 : }
2869 :
2870 : static int
2871 11 : raid_bdev_process_continue_poll(void *arg)
2872 : {
2873 11 : struct raid_bdev_process *process = arg;
2874 :
2875 11 : if (raid_bdev_process_lock_window_range(process)) {
2876 1 : return SPDK_POLLER_BUSY;
2877 : }
2878 10 : return SPDK_POLLER_IDLE;
2879 : }
2880 :
2881 : static void
2882 6 : raid_bdev_process_thread_run(struct raid_bdev_process *process)
2883 : {
2884 6 : struct raid_bdev *raid_bdev = process->raid_bdev;
2885 :
2886 6 : assert(spdk_get_thread() == process->thread);
2887 6 : assert(process->window_remaining == 0);
2888 6 : assert(process->window_range_locked == false);
2889 :
2890 6 : if (process->state == RAID_PROCESS_STATE_STOPPING) {
2891 2 : raid_bdev_process_do_finish(process);
2892 2 : return;
2893 : }
2894 :
2895 4 : if (process->window_offset == raid_bdev->bdev.blockcnt) {
2896 2 : SPDK_DEBUGLOG(bdev_raid, "process completed on %s\n", raid_bdev->bdev.name);
2897 2 : raid_bdev_process_finish(process, 0);
2898 2 : return;
2899 : }
2900 :
2901 2 : process->max_window_size = spdk_min(raid_bdev->bdev.blockcnt - process->window_offset,
2902 : process->max_window_size);
2903 2 : raid_bdev_process_lock_window_range(process);
2904 : }
2905 :
2906 : static void
2907 2 : raid_bdev_process_thread_init(void *ctx)
2908 : {
2909 2 : struct raid_bdev_process *process = ctx;
2910 2 : struct raid_bdev *raid_bdev = process->raid_bdev;
2911 : struct spdk_io_channel *ch;
2912 :
2913 2 : process->thread = spdk_get_thread();
2914 :
2915 2 : ch = spdk_get_io_channel(raid_bdev);
2916 2 : if (ch == NULL) {
2917 0 : process->status = -ENOMEM;
2918 0 : raid_bdev_process_do_finish(process);
2919 0 : return;
2920 : }
2921 :
2922 2 : process->raid_ch = spdk_io_channel_get_ctx(ch);
2923 2 : process->state = RAID_PROCESS_STATE_RUNNING;
2924 :
2925 2 : if (process->qos.enable_qos) {
2926 1 : process->qos.process_continue_poller = SPDK_POLLER_REGISTER(raid_bdev_process_continue_poll,
2927 : process, 0);
2928 1 : spdk_poller_pause(process->qos.process_continue_poller);
2929 : }
2930 :
2931 2 : SPDK_NOTICELOG("Started %s on raid bdev %s\n",
2932 : raid_bdev_process_to_str(process->type), raid_bdev->bdev.name);
2933 :
2934 2 : raid_bdev_process_thread_run(process);
2935 : }
2936 :
2937 : static void
2938 0 : raid_bdev_channels_abort_start_process_done(struct spdk_io_channel_iter *i, int status)
2939 : {
2940 0 : struct raid_bdev_process *process = spdk_io_channel_iter_get_ctx(i);
2941 :
2942 0 : _raid_bdev_remove_base_bdev(process->target, NULL, NULL);
2943 0 : raid_bdev_process_free(process);
2944 :
2945 : /* TODO: update sb */
2946 0 : }
2947 :
2948 : static void
2949 0 : raid_bdev_channel_abort_start_process(struct spdk_io_channel_iter *i)
2950 : {
2951 0 : struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i);
2952 0 : struct raid_bdev_io_channel *raid_ch = spdk_io_channel_get_ctx(ch);
2953 :
2954 0 : raid_bdev_ch_process_cleanup(raid_ch);
2955 :
2956 0 : spdk_for_each_channel_continue(i, 0);
2957 0 : }
2958 :
2959 : static void
2960 2 : raid_bdev_channels_start_process_done(struct spdk_io_channel_iter *i, int status)
2961 : {
2962 2 : struct raid_bdev_process *process = spdk_io_channel_iter_get_ctx(i);
2963 2 : struct raid_bdev *raid_bdev = process->raid_bdev;
2964 : struct spdk_thread *thread;
2965 2 : char thread_name[RAID_BDEV_SB_NAME_SIZE + 16];
2966 :
2967 2 : if (status == 0 &&
2968 2 : (process->target->remove_scheduled || !process->target->is_configured ||
2969 2 : raid_bdev->num_base_bdevs_operational <= raid_bdev->min_base_bdevs_operational)) {
2970 : /* a base bdev was removed before we got here */
2971 0 : status = -ENODEV;
2972 : }
2973 :
2974 2 : if (status != 0) {
2975 0 : SPDK_ERRLOG("Failed to start %s on %s: %s\n",
2976 : raid_bdev_process_to_str(process->type), raid_bdev->bdev.name,
2977 : spdk_strerror(-status));
2978 0 : goto err;
2979 : }
2980 :
2981 2 : snprintf(thread_name, sizeof(thread_name), "%s_%s",
2982 : raid_bdev->bdev.name, raid_bdev_process_to_str(process->type));
2983 :
2984 2 : thread = spdk_thread_create(thread_name, NULL);
2985 2 : if (thread == NULL) {
2986 0 : SPDK_ERRLOG("Failed to create %s thread for %s\n",
2987 : raid_bdev_process_to_str(process->type), raid_bdev->bdev.name);
2988 0 : goto err;
2989 : }
2990 :
2991 2 : raid_bdev->process = process;
2992 :
2993 2 : spdk_thread_send_msg(thread, raid_bdev_process_thread_init, process);
2994 :
2995 2 : return;
2996 0 : err:
2997 0 : spdk_for_each_channel(process->raid_bdev, raid_bdev_channel_abort_start_process, process,
2998 : raid_bdev_channels_abort_start_process_done);
2999 : }
3000 :
3001 : static void
3002 0 : raid_bdev_channel_start_process(struct spdk_io_channel_iter *i)
3003 : {
3004 0 : struct raid_bdev_process *process = spdk_io_channel_iter_get_ctx(i);
3005 0 : struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i);
3006 0 : struct raid_bdev_io_channel *raid_ch = spdk_io_channel_get_ctx(ch);
3007 : int rc;
3008 :
3009 0 : rc = raid_bdev_ch_process_setup(raid_ch, process);
3010 :
3011 0 : spdk_for_each_channel_continue(i, rc);
3012 0 : }
3013 :
3014 : static void
3015 2 : raid_bdev_process_start(struct raid_bdev_process *process)
3016 : {
3017 2 : struct raid_bdev *raid_bdev = process->raid_bdev;
3018 :
3019 2 : assert(raid_bdev->module->submit_process_request != NULL);
3020 :
3021 2 : spdk_for_each_channel(raid_bdev, raid_bdev_channel_start_process, process,
3022 : raid_bdev_channels_start_process_done);
3023 2 : }
3024 :
3025 : static void
3026 32 : raid_bdev_process_request_free(struct raid_bdev_process_request *process_req)
3027 : {
3028 32 : spdk_dma_free(process_req->iov.iov_base);
3029 32 : spdk_dma_free(process_req->md_buf);
3030 32 : free(process_req);
3031 32 : }
3032 :
3033 : static struct raid_bdev_process_request *
3034 32 : raid_bdev_process_alloc_request(struct raid_bdev_process *process)
3035 : {
3036 32 : struct raid_bdev *raid_bdev = process->raid_bdev;
3037 : struct raid_bdev_process_request *process_req;
3038 :
3039 32 : process_req = calloc(1, sizeof(*process_req));
3040 32 : if (process_req == NULL) {
3041 0 : return NULL;
3042 : }
3043 :
3044 32 : process_req->process = process;
3045 32 : process_req->iov.iov_len = process->max_window_size * raid_bdev->bdev.blocklen;
3046 32 : process_req->iov.iov_base = spdk_dma_malloc(process_req->iov.iov_len, 4096, 0);
3047 32 : if (process_req->iov.iov_base == NULL) {
3048 0 : free(process_req);
3049 0 : return NULL;
3050 : }
3051 32 : if (spdk_bdev_is_md_separate(&raid_bdev->bdev)) {
3052 32 : process_req->md_buf = spdk_dma_malloc(process->max_window_size * raid_bdev->bdev.md_len, 4096, 0);
3053 32 : if (process_req->md_buf == NULL) {
3054 0 : raid_bdev_process_request_free(process_req);
3055 0 : return NULL;
3056 : }
3057 : }
3058 :
3059 32 : return process_req;
3060 : }
3061 :
3062 : static void
3063 2 : raid_bdev_process_free(struct raid_bdev_process *process)
3064 : {
3065 : struct raid_bdev_process_request *process_req;
3066 :
3067 34 : while ((process_req = TAILQ_FIRST(&process->requests)) != NULL) {
3068 32 : TAILQ_REMOVE(&process->requests, process_req, link);
3069 32 : raid_bdev_process_request_free(process_req);
3070 : }
3071 :
3072 2 : free(process);
3073 2 : }
3074 :
3075 : static struct raid_bdev_process *
3076 2 : raid_bdev_process_alloc(struct raid_bdev *raid_bdev, enum raid_process_type type,
3077 : struct raid_base_bdev_info *target)
3078 : {
3079 : struct raid_bdev_process *process;
3080 : struct raid_bdev_process_request *process_req;
3081 : int i;
3082 :
3083 2 : process = calloc(1, sizeof(*process));
3084 2 : if (process == NULL) {
3085 0 : return NULL;
3086 : }
3087 :
3088 2 : process->raid_bdev = raid_bdev;
3089 2 : process->type = type;
3090 2 : process->target = target;
3091 2 : process->max_window_size = spdk_max(spdk_divide_round_up(g_opts.process_window_size_kb * 1024UL,
3092 : spdk_bdev_get_data_block_size(&raid_bdev->bdev)),
3093 : raid_bdev->bdev.write_unit_size);
3094 2 : TAILQ_INIT(&process->requests);
3095 2 : TAILQ_INIT(&process->finish_actions);
3096 :
3097 2 : if (g_opts.process_max_bandwidth_mb_sec != 0) {
3098 1 : process->qos.enable_qos = true;
3099 1 : process->qos.last_tsc = spdk_get_ticks();
3100 2 : process->qos.bytes_per_tsc = g_opts.process_max_bandwidth_mb_sec * 1024 * 1024.0 /
3101 1 : spdk_get_ticks_hz();
3102 1 : process->qos.bytes_max = g_opts.process_max_bandwidth_mb_sec * 1024 * 1024.0 / SPDK_SEC_TO_MSEC;
3103 1 : process->qos.bytes_available = 0.0;
3104 : }
3105 :
3106 34 : for (i = 0; i < RAID_BDEV_PROCESS_MAX_QD; i++) {
3107 32 : process_req = raid_bdev_process_alloc_request(process);
3108 32 : if (process_req == NULL) {
3109 0 : raid_bdev_process_free(process);
3110 0 : return NULL;
3111 : }
3112 :
3113 32 : TAILQ_INSERT_TAIL(&process->requests, process_req, link);
3114 : }
3115 :
3116 2 : return process;
3117 : }
3118 :
3119 : static int
3120 2 : raid_bdev_start_rebuild(struct raid_base_bdev_info *target)
3121 : {
3122 : struct raid_bdev_process *process;
3123 :
3124 2 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
3125 :
3126 2 : process = raid_bdev_process_alloc(target->raid_bdev, RAID_PROCESS_REBUILD, target);
3127 2 : if (process == NULL) {
3128 0 : return -ENOMEM;
3129 : }
3130 :
3131 2 : raid_bdev_process_start(process);
3132 :
3133 2 : return 0;
3134 : }
3135 :
3136 : static void raid_bdev_configure_base_bdev_cont(struct raid_base_bdev_info *base_info);
3137 :
3138 : static void
3139 0 : _raid_bdev_configure_base_bdev_cont(struct spdk_io_channel_iter *i, int status)
3140 : {
3141 0 : struct raid_base_bdev_info *base_info = spdk_io_channel_iter_get_ctx(i);
3142 :
3143 0 : raid_bdev_configure_base_bdev_cont(base_info);
3144 0 : }
3145 :
3146 : static void
3147 0 : raid_bdev_ch_sync(struct spdk_io_channel_iter *i)
3148 : {
3149 0 : spdk_for_each_channel_continue(i, 0);
3150 0 : }
3151 :
3152 : static void
3153 510 : raid_bdev_configure_base_bdev_cont(struct raid_base_bdev_info *base_info)
3154 : {
3155 510 : struct raid_bdev *raid_bdev = base_info->raid_bdev;
3156 : raid_base_bdev_cb configure_cb;
3157 : int rc;
3158 :
3159 510 : if (raid_bdev->num_base_bdevs_discovered == raid_bdev->num_base_bdevs_operational &&
3160 0 : base_info->is_process_target == false) {
3161 : /* TODO: defer if rebuild in progress on another base bdev */
3162 0 : assert(raid_bdev->process == NULL);
3163 0 : assert(raid_bdev->state == RAID_BDEV_STATE_ONLINE);
3164 0 : base_info->is_process_target = true;
3165 : /* To assure is_process_target is set before is_configured when checked in raid_bdev_create_cb() */
3166 0 : spdk_for_each_channel(raid_bdev, raid_bdev_ch_sync, base_info, _raid_bdev_configure_base_bdev_cont);
3167 0 : return;
3168 : }
3169 :
3170 510 : base_info->is_configured = true;
3171 :
3172 510 : raid_bdev->num_base_bdevs_discovered++;
3173 510 : assert(raid_bdev->num_base_bdevs_discovered <= raid_bdev->num_base_bdevs);
3174 510 : assert(raid_bdev->num_base_bdevs_operational <= raid_bdev->num_base_bdevs);
3175 510 : assert(raid_bdev->num_base_bdevs_operational >= raid_bdev->min_base_bdevs_operational);
3176 :
3177 510 : configure_cb = base_info->configure_cb;
3178 510 : base_info->configure_cb = NULL;
3179 : /*
3180 : * Configure the raid bdev when the number of discovered base bdevs reaches the number
3181 : * of base bdevs we know to be operational members of the array. Usually this is equal
3182 : * to the total number of base bdevs (num_base_bdevs) but can be less - when the array is
3183 : * degraded.
3184 : */
3185 510 : if (raid_bdev->num_base_bdevs_discovered == raid_bdev->num_base_bdevs_operational) {
3186 14 : rc = raid_bdev_configure(raid_bdev, configure_cb, base_info->configure_cb_ctx);
3187 14 : if (rc != 0) {
3188 0 : SPDK_ERRLOG("Failed to configure raid bdev: %s\n", spdk_strerror(-rc));
3189 : } else {
3190 14 : configure_cb = NULL;
3191 : }
3192 496 : } else if (base_info->is_process_target) {
3193 0 : raid_bdev->num_base_bdevs_operational++;
3194 0 : rc = raid_bdev_start_rebuild(base_info);
3195 0 : if (rc != 0) {
3196 0 : SPDK_ERRLOG("Failed to start rebuild: %s\n", spdk_strerror(-rc));
3197 0 : _raid_bdev_remove_base_bdev(base_info, NULL, NULL);
3198 : }
3199 : } else {
3200 496 : rc = 0;
3201 : }
3202 :
3203 510 : if (configure_cb != NULL) {
3204 496 : configure_cb(base_info->configure_cb_ctx, rc);
3205 : }
3206 : }
3207 :
3208 : static void raid_bdev_examine_sb(const struct raid_bdev_superblock *sb, struct spdk_bdev *bdev,
3209 : raid_base_bdev_cb cb_fn, void *cb_ctx);
3210 :
3211 : static void
3212 510 : raid_bdev_configure_base_bdev_check_sb_cb(const struct raid_bdev_superblock *sb, int status,
3213 : void *ctx)
3214 : {
3215 510 : struct raid_base_bdev_info *base_info = ctx;
3216 510 : raid_base_bdev_cb configure_cb = base_info->configure_cb;
3217 :
3218 510 : switch (status) {
3219 0 : case 0:
3220 : /* valid superblock found */
3221 0 : base_info->configure_cb = NULL;
3222 0 : if (spdk_uuid_compare(&base_info->raid_bdev->bdev.uuid, &sb->uuid) == 0) {
3223 0 : struct spdk_bdev *bdev = spdk_bdev_desc_get_bdev(base_info->desc);
3224 :
3225 0 : raid_bdev_free_base_bdev_resource(base_info);
3226 0 : raid_bdev_examine_sb(sb, bdev, configure_cb, base_info->configure_cb_ctx);
3227 0 : return;
3228 : }
3229 0 : SPDK_ERRLOG("Superblock of a different raid bdev found on bdev %s\n", base_info->name);
3230 0 : status = -EEXIST;
3231 0 : raid_bdev_free_base_bdev_resource(base_info);
3232 0 : break;
3233 510 : case -EINVAL:
3234 : /* no valid superblock */
3235 510 : raid_bdev_configure_base_bdev_cont(base_info);
3236 510 : return;
3237 0 : default:
3238 0 : SPDK_ERRLOG("Failed to examine bdev %s: %s\n",
3239 : base_info->name, spdk_strerror(-status));
3240 0 : break;
3241 : }
3242 :
3243 0 : if (configure_cb != NULL) {
3244 0 : base_info->configure_cb = NULL;
3245 0 : configure_cb(base_info->configure_cb_ctx, status);
3246 : }
3247 : }
3248 :
3249 : static int
3250 513 : raid_bdev_configure_base_bdev(struct raid_base_bdev_info *base_info, bool existing,
3251 : raid_base_bdev_cb cb_fn, void *cb_ctx)
3252 : {
3253 513 : struct raid_bdev *raid_bdev = base_info->raid_bdev;
3254 513 : struct spdk_bdev_desc *desc;
3255 : struct spdk_bdev *bdev;
3256 : const struct spdk_uuid *bdev_uuid;
3257 : int rc;
3258 :
3259 513 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
3260 513 : assert(base_info->desc == NULL);
3261 :
3262 : /*
3263 : * Base bdev can be added by name or uuid. Here we assure both properties are set and valid
3264 : * before claiming the bdev.
3265 : */
3266 :
3267 513 : if (!spdk_uuid_is_null(&base_info->uuid)) {
3268 0 : char uuid_str[SPDK_UUID_STRING_LEN];
3269 : const char *bdev_name;
3270 :
3271 0 : spdk_uuid_fmt_lower(uuid_str, sizeof(uuid_str), &base_info->uuid);
3272 :
3273 : /* UUID of a bdev is registered as its alias */
3274 0 : bdev = spdk_bdev_get_by_name(uuid_str);
3275 0 : if (bdev == NULL) {
3276 0 : return -ENODEV;
3277 : }
3278 :
3279 0 : bdev_name = spdk_bdev_get_name(bdev);
3280 :
3281 0 : if (base_info->name == NULL) {
3282 0 : assert(existing == true);
3283 0 : base_info->name = strdup(bdev_name);
3284 0 : if (base_info->name == NULL) {
3285 0 : return -ENOMEM;
3286 : }
3287 0 : } else if (strcmp(base_info->name, bdev_name) != 0) {
3288 0 : SPDK_ERRLOG("Name mismatch for base bdev '%s' - expected '%s'\n",
3289 : bdev_name, base_info->name);
3290 0 : return -EINVAL;
3291 : }
3292 : }
3293 :
3294 513 : assert(base_info->name != NULL);
3295 :
3296 513 : rc = spdk_bdev_open_ext(base_info->name, true, raid_bdev_event_base_bdev, NULL, &desc);
3297 513 : if (rc != 0) {
3298 1 : if (rc != -ENODEV) {
3299 0 : SPDK_ERRLOG("Unable to create desc on bdev '%s'\n", base_info->name);
3300 : }
3301 1 : return rc;
3302 : }
3303 :
3304 512 : bdev = spdk_bdev_desc_get_bdev(desc);
3305 512 : bdev_uuid = spdk_bdev_get_uuid(bdev);
3306 :
3307 512 : if (spdk_uuid_is_null(&base_info->uuid)) {
3308 512 : spdk_uuid_copy(&base_info->uuid, bdev_uuid);
3309 0 : } else if (spdk_uuid_compare(&base_info->uuid, bdev_uuid) != 0) {
3310 0 : SPDK_ERRLOG("UUID mismatch for base bdev '%s'\n", base_info->name);
3311 0 : spdk_bdev_close(desc);
3312 0 : return -EINVAL;
3313 : }
3314 :
3315 512 : rc = spdk_bdev_module_claim_bdev(bdev, NULL, &g_raid_if);
3316 512 : if (rc != 0) {
3317 2 : SPDK_ERRLOG("Unable to claim this bdev as it is already claimed\n");
3318 2 : spdk_bdev_close(desc);
3319 2 : return rc;
3320 : }
3321 :
3322 510 : SPDK_DEBUGLOG(bdev_raid, "bdev %s is claimed\n", bdev->name);
3323 :
3324 510 : base_info->app_thread_ch = spdk_bdev_get_io_channel(desc);
3325 510 : if (base_info->app_thread_ch == NULL) {
3326 0 : SPDK_ERRLOG("Failed to get io channel\n");
3327 0 : spdk_bdev_module_release_bdev(bdev);
3328 0 : spdk_bdev_close(desc);
3329 0 : return -ENOMEM;
3330 : }
3331 :
3332 510 : base_info->desc = desc;
3333 510 : base_info->blockcnt = bdev->blockcnt;
3334 :
3335 510 : if (raid_bdev->superblock_enabled) {
3336 : uint64_t data_offset;
3337 :
3338 32 : if (base_info->data_offset == 0) {
3339 32 : assert((RAID_BDEV_MIN_DATA_OFFSET_SIZE % spdk_bdev_get_data_block_size(bdev)) == 0);
3340 32 : data_offset = RAID_BDEV_MIN_DATA_OFFSET_SIZE / spdk_bdev_get_data_block_size(bdev);
3341 : } else {
3342 0 : data_offset = base_info->data_offset;
3343 : }
3344 :
3345 32 : if (bdev->optimal_io_boundary != 0) {
3346 0 : data_offset = spdk_divide_round_up(data_offset,
3347 0 : bdev->optimal_io_boundary) * bdev->optimal_io_boundary;
3348 0 : if (base_info->data_offset != 0 && base_info->data_offset != data_offset) {
3349 0 : SPDK_WARNLOG("Data offset %lu on bdev '%s' is different than optimal value %lu\n",
3350 : base_info->data_offset, base_info->name, data_offset);
3351 0 : data_offset = base_info->data_offset;
3352 : }
3353 : }
3354 :
3355 32 : base_info->data_offset = data_offset;
3356 : }
3357 :
3358 510 : if (base_info->data_offset >= bdev->blockcnt) {
3359 0 : SPDK_ERRLOG("Data offset %lu exceeds base bdev capacity %lu on bdev '%s'\n",
3360 : base_info->data_offset, bdev->blockcnt, base_info->name);
3361 0 : rc = -EINVAL;
3362 0 : goto out;
3363 : }
3364 :
3365 510 : if (base_info->data_size == 0) {
3366 510 : base_info->data_size = bdev->blockcnt - base_info->data_offset;
3367 0 : } else if (base_info->data_offset + base_info->data_size > bdev->blockcnt) {
3368 0 : SPDK_ERRLOG("Data offset and size exceeds base bdev capacity %lu on bdev '%s'\n",
3369 : bdev->blockcnt, base_info->name);
3370 0 : rc = -EINVAL;
3371 0 : goto out;
3372 : }
3373 :
3374 510 : if (!raid_bdev->module->dif_supported && spdk_bdev_get_dif_type(bdev) != SPDK_DIF_DISABLE) {
3375 0 : SPDK_ERRLOG("Base bdev '%s' has DIF or DIX enabled - unsupported RAID configuration\n",
3376 : bdev->name);
3377 0 : rc = -EINVAL;
3378 0 : goto out;
3379 : }
3380 :
3381 : /*
3382 : * Set the raid bdev properties if this is the first base bdev configured,
3383 : * otherwise - verify. Assumption is that all the base bdevs for any raid bdev should
3384 : * have the same blocklen and metadata format.
3385 : */
3386 510 : if (raid_bdev->bdev.blocklen == 0) {
3387 16 : raid_bdev->bdev.blocklen = bdev->blocklen;
3388 16 : raid_bdev->bdev.md_len = spdk_bdev_get_md_size(bdev);
3389 16 : raid_bdev->bdev.md_interleave = spdk_bdev_is_md_interleaved(bdev);
3390 16 : raid_bdev->bdev.dif_type = spdk_bdev_get_dif_type(bdev);
3391 16 : raid_bdev->bdev.dif_check_flags = bdev->dif_check_flags;
3392 16 : raid_bdev->bdev.dif_is_head_of_md = spdk_bdev_is_dif_head_of_md(bdev);
3393 16 : raid_bdev->bdev.dif_pi_format = bdev->dif_pi_format;
3394 : } else {
3395 494 : if (raid_bdev->bdev.blocklen != bdev->blocklen) {
3396 0 : SPDK_ERRLOG("Raid bdev '%s' blocklen %u differs from base bdev '%s' blocklen %u\n",
3397 : raid_bdev->bdev.name, raid_bdev->bdev.blocklen, bdev->name, bdev->blocklen);
3398 0 : rc = -EINVAL;
3399 0 : goto out;
3400 : }
3401 :
3402 988 : if (raid_bdev->bdev.md_len != spdk_bdev_get_md_size(bdev) ||
3403 988 : raid_bdev->bdev.md_interleave != spdk_bdev_is_md_interleaved(bdev) ||
3404 494 : raid_bdev->bdev.dif_type != spdk_bdev_get_dif_type(bdev) ||
3405 988 : raid_bdev->bdev.dif_check_flags != bdev->dif_check_flags ||
3406 494 : raid_bdev->bdev.dif_is_head_of_md != spdk_bdev_is_dif_head_of_md(bdev) ||
3407 494 : raid_bdev->bdev.dif_pi_format != bdev->dif_pi_format) {
3408 0 : SPDK_ERRLOG("Raid bdev '%s' has different metadata format than base bdev '%s'\n",
3409 : raid_bdev->bdev.name, bdev->name);
3410 0 : rc = -EINVAL;
3411 0 : goto out;
3412 : }
3413 : }
3414 :
3415 510 : assert(base_info->configure_cb == NULL);
3416 510 : base_info->configure_cb = cb_fn;
3417 510 : base_info->configure_cb_ctx = cb_ctx;
3418 :
3419 510 : if (existing) {
3420 0 : raid_bdev_configure_base_bdev_cont(base_info);
3421 : } else {
3422 : /* check for existing superblock when using a new bdev */
3423 510 : rc = raid_bdev_load_base_bdev_superblock(desc, base_info->app_thread_ch,
3424 : raid_bdev_configure_base_bdev_check_sb_cb, base_info);
3425 510 : if (rc) {
3426 0 : SPDK_ERRLOG("Failed to read bdev %s superblock: %s\n",
3427 : bdev->name, spdk_strerror(-rc));
3428 : }
3429 : }
3430 510 : out:
3431 510 : if (rc != 0) {
3432 0 : base_info->configure_cb = NULL;
3433 0 : raid_bdev_free_base_bdev_resource(base_info);
3434 : }
3435 510 : return rc;
3436 : }
3437 :
3438 : int
3439 513 : raid_bdev_add_base_bdev(struct raid_bdev *raid_bdev, const char *name,
3440 : raid_base_bdev_cb cb_fn, void *cb_ctx)
3441 : {
3442 513 : struct raid_base_bdev_info *base_info = NULL, *iter;
3443 : int rc;
3444 :
3445 513 : assert(name != NULL);
3446 513 : assert(spdk_get_thread() == spdk_thread_get_app_thread());
3447 :
3448 513 : if (raid_bdev->process != NULL) {
3449 0 : SPDK_ERRLOG("raid bdev '%s' is in process\n",
3450 : raid_bdev->bdev.name);
3451 0 : return -EPERM;
3452 : }
3453 :
3454 513 : if (raid_bdev->state == RAID_BDEV_STATE_CONFIGURING) {
3455 513 : struct spdk_bdev *bdev = spdk_bdev_get_by_name(name);
3456 :
3457 513 : if (bdev != NULL) {
3458 16896 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, iter) {
3459 24863 : if (iter->name == NULL &&
3460 8479 : spdk_uuid_compare(&bdev->uuid, &iter->uuid) == 0) {
3461 0 : base_info = iter;
3462 0 : break;
3463 : }
3464 : }
3465 : }
3466 : }
3467 :
3468 513 : if (base_info == NULL || raid_bdev->state == RAID_BDEV_STATE_ONLINE) {
3469 8449 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, iter) {
3470 8449 : if (iter->name == NULL && spdk_uuid_is_null(&iter->uuid)) {
3471 513 : base_info = iter;
3472 513 : break;
3473 : }
3474 : }
3475 : }
3476 :
3477 513 : if (base_info == NULL) {
3478 0 : SPDK_ERRLOG("no empty slot found in raid bdev '%s' for new base bdev '%s'\n",
3479 : raid_bdev->bdev.name, name);
3480 0 : return -EINVAL;
3481 : }
3482 :
3483 513 : assert(base_info->is_configured == false);
3484 :
3485 513 : if (raid_bdev->state == RAID_BDEV_STATE_ONLINE) {
3486 0 : assert(base_info->data_size != 0);
3487 0 : assert(base_info->desc == NULL);
3488 : }
3489 :
3490 513 : base_info->name = strdup(name);
3491 513 : if (base_info->name == NULL) {
3492 0 : return -ENOMEM;
3493 : }
3494 :
3495 513 : rc = raid_bdev_configure_base_bdev(base_info, false, cb_fn, cb_ctx);
3496 513 : if (rc != 0 && (rc != -ENODEV || raid_bdev->state != RAID_BDEV_STATE_CONFIGURING)) {
3497 2 : SPDK_ERRLOG("base bdev '%s' configure failed: %s\n", name, spdk_strerror(-rc));
3498 2 : free(base_info->name);
3499 2 : base_info->name = NULL;
3500 : }
3501 :
3502 513 : return rc;
3503 : }
3504 :
3505 : static int
3506 0 : raid_bdev_create_from_sb(const struct raid_bdev_superblock *sb, struct raid_bdev **raid_bdev_out)
3507 : {
3508 0 : struct raid_bdev *raid_bdev;
3509 : uint8_t i;
3510 : int rc;
3511 :
3512 0 : rc = _raid_bdev_create(sb->name, (sb->strip_size * sb->block_size) / 1024, sb->num_base_bdevs,
3513 0 : sb->level, true, &sb->uuid, &raid_bdev);
3514 0 : if (rc != 0) {
3515 0 : return rc;
3516 : }
3517 :
3518 0 : rc = raid_bdev_alloc_superblock(raid_bdev, sb->block_size);
3519 0 : if (rc != 0) {
3520 0 : raid_bdev_free(raid_bdev);
3521 0 : return rc;
3522 : }
3523 :
3524 0 : assert(sb->length <= RAID_BDEV_SB_MAX_LENGTH);
3525 0 : memcpy(raid_bdev->sb, sb, sb->length);
3526 :
3527 0 : for (i = 0; i < sb->base_bdevs_size; i++) {
3528 0 : const struct raid_bdev_sb_base_bdev *sb_base_bdev = &sb->base_bdevs[i];
3529 0 : struct raid_base_bdev_info *base_info = &raid_bdev->base_bdev_info[sb_base_bdev->slot];
3530 :
3531 0 : if (sb_base_bdev->state == RAID_SB_BASE_BDEV_CONFIGURED) {
3532 0 : spdk_uuid_copy(&base_info->uuid, &sb_base_bdev->uuid);
3533 0 : raid_bdev->num_base_bdevs_operational++;
3534 : }
3535 :
3536 0 : base_info->data_offset = sb_base_bdev->data_offset;
3537 0 : base_info->data_size = sb_base_bdev->data_size;
3538 : }
3539 :
3540 0 : *raid_bdev_out = raid_bdev;
3541 0 : return 0;
3542 : }
3543 :
3544 : static void
3545 0 : raid_bdev_examine_no_sb(struct spdk_bdev *bdev)
3546 : {
3547 : struct raid_bdev *raid_bdev;
3548 : struct raid_base_bdev_info *base_info;
3549 :
3550 0 : TAILQ_FOREACH(raid_bdev, &g_raid_bdev_list, global_link) {
3551 0 : if (raid_bdev->state != RAID_BDEV_STATE_CONFIGURING || raid_bdev->sb != NULL) {
3552 0 : continue;
3553 : }
3554 0 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
3555 0 : if (base_info->desc == NULL &&
3556 0 : ((base_info->name != NULL && strcmp(bdev->name, base_info->name) == 0) ||
3557 0 : spdk_uuid_compare(&base_info->uuid, &bdev->uuid) == 0)) {
3558 0 : raid_bdev_configure_base_bdev(base_info, true, NULL, NULL);
3559 0 : break;
3560 : }
3561 : }
3562 : }
3563 0 : }
3564 :
3565 : struct raid_bdev_examine_others_ctx {
3566 : struct spdk_uuid raid_bdev_uuid;
3567 : uint8_t current_base_bdev_idx;
3568 : raid_base_bdev_cb cb_fn;
3569 : void *cb_ctx;
3570 : };
3571 :
3572 : static void
3573 0 : raid_bdev_examine_others_done(void *_ctx, int status)
3574 : {
3575 0 : struct raid_bdev_examine_others_ctx *ctx = _ctx;
3576 :
3577 0 : if (ctx->cb_fn != NULL) {
3578 0 : ctx->cb_fn(ctx->cb_ctx, status);
3579 : }
3580 0 : free(ctx);
3581 0 : }
3582 :
3583 : typedef void (*raid_bdev_examine_load_sb_cb)(struct spdk_bdev *bdev,
3584 : const struct raid_bdev_superblock *sb, int status, void *ctx);
3585 : static int raid_bdev_examine_load_sb(const char *bdev_name, raid_bdev_examine_load_sb_cb cb,
3586 : void *cb_ctx);
3587 : static void raid_bdev_examine_sb(const struct raid_bdev_superblock *sb, struct spdk_bdev *bdev,
3588 : raid_base_bdev_cb cb_fn, void *cb_ctx);
3589 : static void raid_bdev_examine_others(void *_ctx, int status);
3590 :
3591 : static void
3592 0 : raid_bdev_examine_others_load_cb(struct spdk_bdev *bdev, const struct raid_bdev_superblock *sb,
3593 : int status, void *_ctx)
3594 : {
3595 0 : struct raid_bdev_examine_others_ctx *ctx = _ctx;
3596 :
3597 0 : if (status != 0) {
3598 0 : raid_bdev_examine_others_done(ctx, status);
3599 0 : return;
3600 : }
3601 :
3602 0 : raid_bdev_examine_sb(sb, bdev, raid_bdev_examine_others, ctx);
3603 : }
3604 :
3605 : static void
3606 0 : raid_bdev_examine_others(void *_ctx, int status)
3607 : {
3608 0 : struct raid_bdev_examine_others_ctx *ctx = _ctx;
3609 : struct raid_bdev *raid_bdev;
3610 : struct raid_base_bdev_info *base_info;
3611 0 : char uuid_str[SPDK_UUID_STRING_LEN];
3612 :
3613 0 : if (status != 0 && status != -EEXIST) {
3614 0 : goto out;
3615 : }
3616 :
3617 0 : raid_bdev = raid_bdev_find_by_uuid(&ctx->raid_bdev_uuid);
3618 0 : if (raid_bdev == NULL) {
3619 0 : status = -ENODEV;
3620 0 : goto out;
3621 : }
3622 :
3623 0 : for (base_info = &raid_bdev->base_bdev_info[ctx->current_base_bdev_idx];
3624 0 : base_info < &raid_bdev->base_bdev_info[raid_bdev->num_base_bdevs];
3625 0 : base_info++) {
3626 0 : if (base_info->is_configured || spdk_uuid_is_null(&base_info->uuid)) {
3627 0 : continue;
3628 : }
3629 :
3630 0 : spdk_uuid_fmt_lower(uuid_str, sizeof(uuid_str), &base_info->uuid);
3631 :
3632 0 : if (spdk_bdev_get_by_name(uuid_str) == NULL) {
3633 0 : continue;
3634 : }
3635 :
3636 0 : ctx->current_base_bdev_idx = raid_bdev_base_bdev_slot(base_info);
3637 :
3638 0 : status = raid_bdev_examine_load_sb(uuid_str, raid_bdev_examine_others_load_cb, ctx);
3639 0 : if (status != 0) {
3640 0 : continue;
3641 : }
3642 0 : return;
3643 : }
3644 0 : out:
3645 0 : raid_bdev_examine_others_done(ctx, status);
3646 : }
3647 :
3648 : static void
3649 0 : raid_bdev_examine_sb(const struct raid_bdev_superblock *sb, struct spdk_bdev *bdev,
3650 : raid_base_bdev_cb cb_fn, void *cb_ctx)
3651 : {
3652 0 : const struct raid_bdev_sb_base_bdev *sb_base_bdev = NULL;
3653 0 : struct raid_bdev *raid_bdev;
3654 : struct raid_base_bdev_info *iter, *base_info;
3655 : uint8_t i;
3656 : int rc;
3657 :
3658 0 : if (sb->block_size != spdk_bdev_get_data_block_size(bdev)) {
3659 0 : SPDK_WARNLOG("Bdev %s block size (%u) does not match the value in superblock (%u)\n",
3660 : bdev->name, sb->block_size, spdk_bdev_get_data_block_size(bdev));
3661 0 : rc = -EINVAL;
3662 0 : goto out;
3663 : }
3664 :
3665 0 : if (spdk_uuid_is_null(&sb->uuid)) {
3666 0 : SPDK_WARNLOG("NULL raid bdev UUID in superblock on bdev %s\n", bdev->name);
3667 0 : rc = -EINVAL;
3668 0 : goto out;
3669 : }
3670 :
3671 0 : raid_bdev = raid_bdev_find_by_uuid(&sb->uuid);
3672 :
3673 0 : if (raid_bdev) {
3674 0 : if (sb->seq_number > raid_bdev->sb->seq_number) {
3675 0 : SPDK_DEBUGLOG(bdev_raid,
3676 : "raid superblock seq_number on bdev %s (%lu) greater than existing raid bdev %s (%lu)\n",
3677 : bdev->name, sb->seq_number, raid_bdev->bdev.name, raid_bdev->sb->seq_number);
3678 :
3679 0 : if (raid_bdev->state != RAID_BDEV_STATE_CONFIGURING) {
3680 0 : SPDK_WARNLOG("Newer version of raid bdev %s superblock found on bdev %s but raid bdev is not in configuring state.\n",
3681 : raid_bdev->bdev.name, bdev->name);
3682 0 : rc = -EBUSY;
3683 0 : goto out;
3684 : }
3685 :
3686 : /* remove and then recreate the raid bdev using the newer superblock */
3687 0 : raid_bdev_delete(raid_bdev, NULL, NULL);
3688 0 : raid_bdev = NULL;
3689 0 : } else if (sb->seq_number < raid_bdev->sb->seq_number) {
3690 0 : SPDK_DEBUGLOG(bdev_raid,
3691 : "raid superblock seq_number on bdev %s (%lu) smaller than existing raid bdev %s (%lu)\n",
3692 : bdev->name, sb->seq_number, raid_bdev->bdev.name, raid_bdev->sb->seq_number);
3693 : /* use the current raid bdev superblock */
3694 0 : sb = raid_bdev->sb;
3695 : }
3696 : }
3697 :
3698 0 : for (i = 0; i < sb->base_bdevs_size; i++) {
3699 0 : sb_base_bdev = &sb->base_bdevs[i];
3700 :
3701 0 : assert(spdk_uuid_is_null(&sb_base_bdev->uuid) == false);
3702 :
3703 0 : if (spdk_uuid_compare(&sb_base_bdev->uuid, spdk_bdev_get_uuid(bdev)) == 0) {
3704 0 : break;
3705 : }
3706 : }
3707 :
3708 0 : if (i == sb->base_bdevs_size) {
3709 0 : SPDK_DEBUGLOG(bdev_raid, "raid superblock does not contain this bdev's uuid\n");
3710 0 : rc = -EINVAL;
3711 0 : goto out;
3712 : }
3713 :
3714 0 : if (!raid_bdev) {
3715 : struct raid_bdev_examine_others_ctx *ctx;
3716 :
3717 0 : ctx = calloc(1, sizeof(*ctx));
3718 0 : if (ctx == NULL) {
3719 0 : rc = -ENOMEM;
3720 0 : goto out;
3721 : }
3722 :
3723 0 : rc = raid_bdev_create_from_sb(sb, &raid_bdev);
3724 0 : if (rc != 0) {
3725 0 : SPDK_ERRLOG("Failed to create raid bdev %s: %s\n",
3726 : sb->name, spdk_strerror(-rc));
3727 0 : free(ctx);
3728 0 : goto out;
3729 : }
3730 :
3731 : /* after this base bdev is configured, examine other base bdevs that may be present */
3732 0 : spdk_uuid_copy(&ctx->raid_bdev_uuid, &sb->uuid);
3733 0 : ctx->cb_fn = cb_fn;
3734 0 : ctx->cb_ctx = cb_ctx;
3735 :
3736 0 : cb_fn = raid_bdev_examine_others;
3737 0 : cb_ctx = ctx;
3738 : }
3739 :
3740 0 : if (raid_bdev->state == RAID_BDEV_STATE_ONLINE) {
3741 0 : assert(sb_base_bdev->slot < raid_bdev->num_base_bdevs);
3742 0 : base_info = &raid_bdev->base_bdev_info[sb_base_bdev->slot];
3743 0 : assert(base_info->is_configured == false);
3744 0 : assert(sb_base_bdev->state == RAID_SB_BASE_BDEV_MISSING ||
3745 : sb_base_bdev->state == RAID_SB_BASE_BDEV_FAILED);
3746 0 : assert(spdk_uuid_is_null(&base_info->uuid));
3747 0 : spdk_uuid_copy(&base_info->uuid, &sb_base_bdev->uuid);
3748 0 : SPDK_NOTICELOG("Re-adding bdev %s to raid bdev %s.\n", bdev->name, raid_bdev->bdev.name);
3749 0 : rc = raid_bdev_configure_base_bdev(base_info, true, cb_fn, cb_ctx);
3750 0 : if (rc != 0) {
3751 0 : SPDK_ERRLOG("Failed to configure bdev %s as base bdev of raid %s: %s\n",
3752 : bdev->name, raid_bdev->bdev.name, spdk_strerror(-rc));
3753 : }
3754 0 : goto out;
3755 : }
3756 :
3757 0 : if (sb_base_bdev->state != RAID_SB_BASE_BDEV_CONFIGURED) {
3758 0 : SPDK_NOTICELOG("Bdev %s is not an active member of raid bdev %s. Ignoring.\n",
3759 : bdev->name, raid_bdev->bdev.name);
3760 0 : rc = -EINVAL;
3761 0 : goto out;
3762 : }
3763 :
3764 0 : base_info = NULL;
3765 0 : RAID_FOR_EACH_BASE_BDEV(raid_bdev, iter) {
3766 0 : if (spdk_uuid_compare(&iter->uuid, spdk_bdev_get_uuid(bdev)) == 0) {
3767 0 : base_info = iter;
3768 0 : break;
3769 : }
3770 : }
3771 :
3772 0 : if (base_info == NULL) {
3773 0 : SPDK_ERRLOG("Bdev %s is not a member of raid bdev %s\n",
3774 : bdev->name, raid_bdev->bdev.name);
3775 0 : rc = -EINVAL;
3776 0 : goto out;
3777 : }
3778 :
3779 0 : if (base_info->is_configured) {
3780 0 : rc = -EEXIST;
3781 0 : goto out;
3782 : }
3783 :
3784 0 : rc = raid_bdev_configure_base_bdev(base_info, true, cb_fn, cb_ctx);
3785 0 : if (rc != 0) {
3786 0 : SPDK_ERRLOG("Failed to configure bdev %s as base bdev of raid %s: %s\n",
3787 : bdev->name, raid_bdev->bdev.name, spdk_strerror(-rc));
3788 : }
3789 0 : out:
3790 0 : if (rc != 0 && cb_fn != 0) {
3791 0 : cb_fn(cb_ctx, rc);
3792 : }
3793 0 : }
3794 :
3795 : struct raid_bdev_examine_ctx {
3796 : struct spdk_bdev_desc *desc;
3797 : struct spdk_io_channel *ch;
3798 : raid_bdev_examine_load_sb_cb cb;
3799 : void *cb_ctx;
3800 : };
3801 :
3802 : static void
3803 0 : raid_bdev_examine_ctx_free(struct raid_bdev_examine_ctx *ctx)
3804 : {
3805 0 : if (!ctx) {
3806 0 : return;
3807 : }
3808 :
3809 0 : if (ctx->ch) {
3810 0 : spdk_put_io_channel(ctx->ch);
3811 : }
3812 :
3813 0 : if (ctx->desc) {
3814 0 : spdk_bdev_close(ctx->desc);
3815 : }
3816 :
3817 0 : free(ctx);
3818 : }
3819 :
3820 : static void
3821 0 : raid_bdev_examine_load_sb_done(const struct raid_bdev_superblock *sb, int status, void *_ctx)
3822 : {
3823 0 : struct raid_bdev_examine_ctx *ctx = _ctx;
3824 0 : struct spdk_bdev *bdev = spdk_bdev_desc_get_bdev(ctx->desc);
3825 :
3826 0 : ctx->cb(bdev, sb, status, ctx->cb_ctx);
3827 :
3828 0 : raid_bdev_examine_ctx_free(ctx);
3829 0 : }
3830 :
3831 : static void
3832 0 : raid_bdev_examine_event_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *event_ctx)
3833 : {
3834 0 : }
3835 :
3836 : static int
3837 0 : raid_bdev_examine_load_sb(const char *bdev_name, raid_bdev_examine_load_sb_cb cb, void *cb_ctx)
3838 : {
3839 : struct raid_bdev_examine_ctx *ctx;
3840 : int rc;
3841 :
3842 0 : assert(cb != NULL);
3843 :
3844 0 : ctx = calloc(1, sizeof(*ctx));
3845 0 : if (!ctx) {
3846 0 : return -ENOMEM;
3847 : }
3848 :
3849 0 : rc = spdk_bdev_open_ext(bdev_name, false, raid_bdev_examine_event_cb, NULL, &ctx->desc);
3850 0 : if (rc) {
3851 0 : SPDK_ERRLOG("Failed to open bdev %s: %s\n", bdev_name, spdk_strerror(-rc));
3852 0 : goto err;
3853 : }
3854 :
3855 0 : ctx->ch = spdk_bdev_get_io_channel(ctx->desc);
3856 0 : if (!ctx->ch) {
3857 0 : SPDK_ERRLOG("Failed to get io channel for bdev %s\n", bdev_name);
3858 0 : rc = -ENOMEM;
3859 0 : goto err;
3860 : }
3861 :
3862 0 : ctx->cb = cb;
3863 0 : ctx->cb_ctx = cb_ctx;
3864 :
3865 0 : rc = raid_bdev_load_base_bdev_superblock(ctx->desc, ctx->ch, raid_bdev_examine_load_sb_done, ctx);
3866 0 : if (rc) {
3867 0 : SPDK_ERRLOG("Failed to read bdev %s superblock: %s\n",
3868 : bdev_name, spdk_strerror(-rc));
3869 0 : goto err;
3870 : }
3871 :
3872 0 : return 0;
3873 0 : err:
3874 0 : raid_bdev_examine_ctx_free(ctx);
3875 0 : return rc;
3876 : }
3877 :
3878 : static void
3879 0 : raid_bdev_examine_done(void *ctx, int status)
3880 : {
3881 0 : struct spdk_bdev *bdev = ctx;
3882 :
3883 0 : if (status != 0) {
3884 0 : SPDK_ERRLOG("Failed to examine bdev %s: %s\n",
3885 : bdev->name, spdk_strerror(-status));
3886 : }
3887 0 : spdk_bdev_module_examine_done(&g_raid_if);
3888 0 : }
3889 :
3890 : static void
3891 0 : raid_bdev_examine_cont(struct spdk_bdev *bdev, const struct raid_bdev_superblock *sb, int status,
3892 : void *ctx)
3893 : {
3894 0 : switch (status) {
3895 0 : case 0:
3896 : /* valid superblock found */
3897 0 : SPDK_DEBUGLOG(bdev_raid, "raid superblock found on bdev %s\n", bdev->name);
3898 0 : raid_bdev_examine_sb(sb, bdev, raid_bdev_examine_done, bdev);
3899 0 : return;
3900 0 : case -EINVAL:
3901 : /* no valid superblock, check if it can be claimed anyway */
3902 0 : raid_bdev_examine_no_sb(bdev);
3903 0 : status = 0;
3904 0 : break;
3905 : }
3906 :
3907 0 : raid_bdev_examine_done(bdev, status);
3908 : }
3909 :
3910 : /*
3911 : * brief:
3912 : * raid_bdev_examine function is the examine function call by the below layers
3913 : * like bdev_nvme layer. This function will check if this base bdev can be
3914 : * claimed by this raid bdev or not.
3915 : * params:
3916 : * bdev - pointer to base bdev
3917 : * returns:
3918 : * none
3919 : */
3920 : static void
3921 0 : raid_bdev_examine(struct spdk_bdev *bdev)
3922 : {
3923 0 : int rc = 0;
3924 :
3925 0 : if (raid_bdev_find_base_info_by_bdev(bdev) != NULL) {
3926 0 : goto done;
3927 : }
3928 :
3929 0 : if (spdk_bdev_get_dif_type(bdev) != SPDK_DIF_DISABLE) {
3930 0 : raid_bdev_examine_no_sb(bdev);
3931 0 : goto done;
3932 : }
3933 :
3934 0 : rc = raid_bdev_examine_load_sb(bdev->name, raid_bdev_examine_cont, NULL);
3935 0 : if (rc != 0) {
3936 0 : goto done;
3937 : }
3938 :
3939 0 : return;
3940 0 : done:
3941 0 : raid_bdev_examine_done(bdev, rc);
3942 : }
3943 :
3944 : /* Log component for bdev raid bdev module */
3945 1 : SPDK_LOG_REGISTER_COMPONENT(bdev_raid)
3946 :
3947 : static void
3948 0 : bdev_raid_trace(void)
3949 : {
3950 0 : struct spdk_trace_tpoint_opts opts[] = {
3951 : {
3952 : "BDEV_RAID_IO_START", TRACE_BDEV_RAID_IO_START,
3953 : OWNER_TYPE_NONE, OBJECT_BDEV_RAID_IO, 1,
3954 : {{ "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 }}
3955 : },
3956 : {
3957 : "BDEV_RAID_IO_DONE", TRACE_BDEV_RAID_IO_DONE,
3958 : OWNER_TYPE_NONE, OBJECT_BDEV_RAID_IO, 0,
3959 : {{ "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 }}
3960 : }
3961 : };
3962 :
3963 :
3964 0 : spdk_trace_register_object(OBJECT_BDEV_RAID_IO, 'R');
3965 0 : spdk_trace_register_description_ext(opts, SPDK_COUNTOF(opts));
3966 0 : spdk_trace_tpoint_register_relation(TRACE_BDEV_IO_START, OBJECT_BDEV_RAID_IO, 1);
3967 0 : spdk_trace_tpoint_register_relation(TRACE_BDEV_IO_DONE, OBJECT_BDEV_RAID_IO, 0);
3968 0 : }
3969 1 : SPDK_TRACE_REGISTER_FN(bdev_raid_trace, "bdev_raid", TRACE_GROUP_BDEV_RAID)
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