source: mainline/uspace/srv/bd/hr/hr.c@ ca7fa5b

Last change on this file since ca7fa5b was 0277ec2, checked in by Miroslav Cimerman <mc@…>, 4 months ago

hr: refactor metadata handling
  • Property mode set to 100644
File size: 10.7 KB
Line 
1/*
2 * Copyright (c) 2025 Miroslav Cimerman
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup hr
30 * @{
31 */
32/**
33 * @file
34 */
35
36#include <adt/list.h>
37#include <async.h>
38#include <bd_srv.h>
39#include <errno.h>
40#include <hr.h>
41#include <io/log.h>
42#include <inttypes.h>
43#include <ipc/hr.h>
44#include <ipc/services.h>
45#include <loc.h>
46#include <task.h>
47#include <stdatomic.h>
48#include <stdio.h>
49#include <stdlib.h>
50#include <str.h>
51#include <str_error.h>
52#include <block.h>
53
54#include "fge.h"
55#include "io.h"
56#include "superblock.h"
57#include "util.h"
58#include "var.h"
59
60static void hr_assemble_srv(ipc_call_t *);
61static void hr_auto_assemble_srv(ipc_call_t *);
62static void hr_stop_srv(ipc_call_t *);
63static void hr_add_hotspare_srv(ipc_call_t *);
64static void hr_print_status_srv(ipc_call_t *);
65static void hr_ctl_conn(ipc_call_t *, void *);
66static void hr_client_conn(ipc_call_t *, void *);
67
68loc_srv_t *hr_srv;
69list_t hr_volumes;
70fibril_rwlock_t hr_volumes_lock;
71
72static service_id_t ctl_sid;
73
74static void hr_create_srv(ipc_call_t *icall)
75{
76 HR_DEBUG("%s()", __func__);
77
78 errno_t rc;
79 size_t i, size;
80 hr_config_t *cfg;
81 hr_volume_t *new_volume;
82 ipc_call_t call;
83
84 if (!async_data_write_receive(&call, &size)) {
85 async_answer_0(&call, EREFUSED);
86 async_answer_0(icall, EREFUSED);
87 return;
88 }
89
90 if (size != sizeof(hr_config_t)) {
91 async_answer_0(&call, EINVAL);
92 async_answer_0(icall, EINVAL);
93 return;
94 }
95
96 cfg = calloc(1, sizeof(hr_config_t));
97 if (cfg == NULL) {
98 async_answer_0(&call, ENOMEM);
99 async_answer_0(icall, ENOMEM);
100 return;
101 }
102
103 rc = async_data_write_finalize(&call, cfg, size);
104 if (rc != EOK) {
105 free(cfg);
106 async_answer_0(&call, rc);
107 async_answer_0(icall, rc);
108 return;
109 }
110
111 /*
112 * If there was a missing device provided
113 * for creation of a new array, abort
114 */
115 for (i = 0; i < cfg->dev_no; i++) {
116 if (cfg->devs[i] == 0) {
117 /*
118 * XXX: own error codes, no need to log this...
119 * its user error not service error
120 */
121 HR_ERROR("missing device provided for array "
122 "creation, aborting");
123 free(cfg);
124 async_answer_0(icall, EINVAL);
125 return;
126 }
127 }
128
129 rc = hr_create_vol_struct(&new_volume, cfg->level, cfg->devname);
130 if (rc != EOK) {
131 free(cfg);
132 async_answer_0(icall, rc);
133 return;
134 }
135
136 rc = hr_init_extents_from_cfg(new_volume, cfg);
137 if (rc != EOK)
138 goto error;
139
140 new_volume->hr_ops.init(new_volume);
141 if (rc != EOK)
142 goto error;
143
144 rc = hr_metadata_init(new_volume, new_volume->in_mem_md);
145 if (rc != EOK)
146 goto error;
147
148 rc = hr_metadata_save(new_volume);
149 if (rc != EOK)
150 goto error;
151
152 rc = new_volume->hr_ops.create(new_volume);
153 if (rc != EOK)
154 goto error;
155
156 rc = hr_register_volume(new_volume);
157 if (rc != EOK)
158 goto error;
159
160 fibril_rwlock_write_lock(&hr_volumes_lock);
161 list_append(&new_volume->lvolumes, &hr_volumes);
162 fibril_rwlock_write_unlock(&hr_volumes_lock);
163
164 HR_DEBUG("created volume \"%s\" (%" PRIun ")\n", new_volume->devname,
165 new_volume->svc_id);
166
167 free(cfg);
168 async_answer_0(icall, rc);
169 return;
170error:
171 free(cfg);
172 hr_destroy_vol_struct(new_volume);
173 async_answer_0(icall, rc);
174}
175
176static void hr_assemble_srv(ipc_call_t *icall)
177{
178 HR_DEBUG("%s()", __func__);
179
180 errno_t rc;
181 size_t size, assembled_cnt;
182 hr_config_t *cfg;
183 ipc_call_t call;
184
185 if (!async_data_write_receive(&call, &size)) {
186 async_answer_0(&call, EREFUSED);
187 async_answer_0(icall, EREFUSED);
188 return;
189 }
190
191 if (size != sizeof(hr_config_t)) {
192 async_answer_0(&call, EINVAL);
193 async_answer_0(icall, EINVAL);
194 return;
195 }
196
197 cfg = calloc(1, sizeof(hr_config_t));
198 if (cfg == NULL) {
199 async_answer_0(&call, ENOMEM);
200 async_answer_0(icall, ENOMEM);
201 return;
202 }
203
204 rc = async_data_write_finalize(&call, cfg, size);
205 if (rc != EOK)
206 goto error;
207
208 if (!async_data_read_receive(&call, &size)) {
209 async_answer_0(icall, EREFUSED);
210 return;
211 }
212
213 if (size != sizeof(size_t)) {
214 async_answer_0(icall, EINVAL);
215 return;
216 }
217
218 rc = hr_util_try_assemble(cfg, &assembled_cnt);
219 if (rc != EOK)
220 goto error;
221
222 rc = async_data_read_finalize(&call, &assembled_cnt, size);
223 if (rc != EOK)
224 goto error;
225
226 free(cfg);
227 async_answer_0(icall, EOK);
228 return;
229error:
230 free(cfg);
231 async_answer_0(&call, rc);
232 async_answer_0(icall, rc);
233}
234
235static void hr_auto_assemble_srv(ipc_call_t *icall)
236{
237 HR_DEBUG("%s()", __func__);
238
239 errno_t rc;
240 size_t size;
241 size_t assembled_cnt = 0;
242 ipc_call_t call;
243
244 if (!async_data_read_receive(&call, &size)) {
245 async_answer_0(icall, EREFUSED);
246 return;
247 }
248
249 if (size != sizeof(size_t)) {
250 async_answer_0(&call, EINVAL);
251 async_answer_0(icall, EINVAL);
252 return;
253 }
254
255 rc = hr_util_try_assemble(NULL, &assembled_cnt);
256 if (rc != EOK)
257 goto error;
258
259 rc = async_data_read_finalize(&call, &assembled_cnt, size);
260 if (rc != EOK)
261 goto error;
262
263 async_answer_0(icall, EOK);
264 return;
265error:
266 async_answer_0(&call, rc);
267 async_answer_0(icall, rc);
268}
269
270static void hr_stop_srv(ipc_call_t *icall)
271{
272 HR_DEBUG("%s()", __func__);
273
274 errno_t rc = EOK;
275 service_id_t svc_id;
276 long fail_extent;
277 hr_volume_t *vol;
278
279 svc_id = ipc_get_arg1(icall);
280 fail_extent = (long)ipc_get_arg2(icall);
281
282 vol = hr_get_volume(svc_id);
283 if (vol == NULL) {
284 async_answer_0(icall, ENOENT);
285 return;
286 }
287
288 if (fail_extent == -1) {
289 rc = hr_remove_volume(svc_id);
290 if (rc != EOK) {
291 async_answer_0(icall, rc);
292 return;
293 }
294 } else {
295 fibril_rwlock_write_lock(&vol->states_lock);
296 fibril_rwlock_read_lock(&vol->extents_lock);
297
298 /* TODO: maybe expose extent state callbacks */
299 hr_update_ext_status(vol, fail_extent, HR_EXT_FAILED);
300 hr_mark_vol_state_dirty(vol);
301
302 fibril_rwlock_read_unlock(&vol->extents_lock);
303 fibril_rwlock_write_unlock(&vol->states_lock);
304
305 vol->hr_ops.status_event(vol);
306 }
307 async_answer_0(icall, rc);
308}
309
310static void hr_add_hotspare_srv(ipc_call_t *icall)
311{
312 HR_DEBUG("%s()", __func__);
313
314 errno_t rc = EOK;
315 service_id_t vol_svc_id;
316 service_id_t hotspare;
317 hr_volume_t *vol;
318
319 vol_svc_id = ipc_get_arg1(icall);
320 hotspare = ipc_get_arg2(icall);
321
322 vol = hr_get_volume(vol_svc_id);
323 if (vol == NULL) {
324 async_answer_0(icall, ENOENT);
325 return;
326 }
327
328 if (vol->hr_ops.add_hotspare == NULL) {
329 HR_DEBUG("hr_add_hotspare(): not supported on RAID level %d\n",
330 vol->level);
331 async_answer_0(icall, ENOTSUP);
332 return;
333 }
334
335 rc = vol->hr_ops.add_hotspare(vol, hotspare);
336
337 async_answer_0(icall, rc);
338}
339
340static void hr_print_status_srv(ipc_call_t *icall)
341{
342 HR_DEBUG("%s()", __func__);
343
344 errno_t rc;
345 size_t vol_cnt = 0;
346 hr_vol_info_t info;
347 ipc_call_t call;
348 size_t size;
349
350 fibril_rwlock_read_lock(&hr_volumes_lock);
351
352 vol_cnt = list_count(&hr_volumes);
353
354 if (!async_data_read_receive(&call, &size)) {
355 rc = EREFUSED;
356 goto error;
357 }
358
359 if (size != sizeof(size_t)) {
360 rc = EINVAL;
361 goto error;
362 }
363
364 rc = async_data_read_finalize(&call, &vol_cnt, size);
365 if (rc != EOK)
366 goto error;
367
368 list_foreach(hr_volumes, lvolumes, hr_volume_t, vol) {
369 memcpy(info.extents, vol->extents,
370 sizeof(hr_extent_t) * HR_MAX_EXTENTS);
371 memcpy(info.hotspares, vol->hotspares,
372 sizeof(hr_extent_t) * HR_MAX_HOTSPARES);
373 info.svc_id = vol->svc_id;
374 info.extent_no = vol->extent_no;
375 info.hotspare_no = vol->hotspare_no;
376 info.level = vol->level;
377 /* print usable number of blocks */
378 info.nblocks = vol->data_blkno;
379 info.strip_size = vol->strip_size;
380 info.bsize = vol->bsize;
381 info.status = vol->status;
382 info.layout = vol->layout;
383
384 if (!async_data_read_receive(&call, &size)) {
385 rc = EREFUSED;
386 goto error;
387 }
388
389 if (size != sizeof(hr_vol_info_t)) {
390 rc = EINVAL;
391 goto error;
392 }
393
394 rc = async_data_read_finalize(&call, &info, size);
395 if (rc != EOK)
396 goto error;
397 }
398
399 fibril_rwlock_read_unlock(&hr_volumes_lock);
400 async_answer_0(icall, EOK);
401 return;
402error:
403 fibril_rwlock_read_unlock(&hr_volumes_lock);
404 async_answer_0(&call, rc);
405 async_answer_0(icall, rc);
406}
407
408static void hr_ctl_conn(ipc_call_t *icall, void *arg)
409{
410 HR_DEBUG("%s()", __func__);
411
412 async_accept_0(icall);
413
414 while (true) {
415 ipc_call_t call;
416 async_get_call(&call);
417 sysarg_t method = ipc_get_imethod(&call);
418
419 if (!method) {
420 async_answer_0(&call, EOK);
421 return;
422 }
423
424 switch (method) {
425 case HR_CREATE:
426 hr_create_srv(&call);
427 break;
428 case HR_ASSEMBLE:
429 hr_assemble_srv(&call);
430 break;
431 case HR_AUTO_ASSEMBLE:
432 hr_auto_assemble_srv(&call);
433 break;
434 case HR_STOP:
435 hr_stop_srv(&call);
436 break;
437 case HR_ADD_HOTSPARE:
438 hr_add_hotspare_srv(&call);
439 break;
440 case HR_STATUS:
441 hr_print_status_srv(&call);
442 break;
443 default:
444 async_answer_0(&call, EINVAL);
445 }
446 }
447}
448
449static void hr_client_conn(ipc_call_t *icall, void *arg)
450{
451 HR_DEBUG("%s()", __func__);
452
453 hr_volume_t *vol;
454
455 service_id_t svc_id = ipc_get_arg2(icall);
456
457 if (svc_id == ctl_sid) {
458 hr_ctl_conn(icall, arg);
459 } else {
460 HR_DEBUG("bd_conn()\n");
461 vol = hr_get_volume(svc_id);
462 if (vol == NULL)
463 async_answer_0(icall, ENOENT);
464 bd_conn(icall, &vol->hr_bds);
465 }
466}
467
468int main(int argc, char **argv)
469{
470 errno_t rc;
471
472 printf("%s: HelenRAID server\n", NAME);
473
474 rc = log_init(NAME);
475 if (rc != EOK) {
476 printf("%s: failed to initialize logging\n", NAME);
477 return 1;
478 }
479
480 fibril_rwlock_initialize(&hr_volumes_lock);
481 list_initialize(&hr_volumes);
482
483 async_set_fallback_port_handler(hr_client_conn, NULL);
484
485 rc = loc_server_register(NAME, &hr_srv);
486 if (rc != EOK) {
487 HR_ERROR("failed registering server: %s", str_error(rc));
488 return EEXIST;
489 }
490
491 rc = loc_service_register(hr_srv, SERVICE_NAME_HR, &ctl_sid);
492 if (rc != EOK) {
493 HR_ERROR("failed registering service: %s", str_error(rc));
494 return EEXIST;
495 }
496
497 printf("%s: accepting connections\n", NAME);
498 task_retval(0);
499 async_manager();
500
501 return 0;
502}
503
504/** @}
505 */
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