source: mainline/uspace/srv/bd/hr/hr.c@ d7768d11

Last change on this file since d7768d11 was d7768d11, checked in by Miroslav Cimerman <mc@…>, 8 months ago

hr: add different RAID4,5 layouts

Also prepare the metadata for metada versioning
and sync counter.
  • Property mode set to 100644
File size: 10.9 KB
Line 
1/*
2 * Copyright (c) 2024 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 <async.h>
37#include <bd_srv.h>
38#include <errno.h>
39#include <hr.h>
40#include <io/log.h>
41#include <inttypes.h>
42#include <ipc/hr.h>
43#include <ipc/services.h>
44#include <loc.h>
45#include <task.h>
46#include <stdio.h>
47#include <stdlib.h>
48#include <str.h>
49#include <str_error.h>
50
51#include "superblock.h"
52#include "util.h"
53#include "var.h"
54
55loc_srv_t *hr_srv;
56
57static fibril_mutex_t hr_volumes_lock;
58static list_t hr_volumes;
59
60static service_id_t ctl_sid;
61
62static hr_volume_t *hr_get_volume(service_id_t svc_id)
63{
64 HR_DEBUG("hr_get_volume(): (%" PRIun ")\n", svc_id);
65
66 fibril_mutex_lock(&hr_volumes_lock);
67 list_foreach(hr_volumes, lvolumes, hr_volume_t, vol) {
68 if (vol->svc_id == svc_id) {
69 fibril_mutex_unlock(&hr_volumes_lock);
70 return vol;
71 }
72 }
73
74 fibril_mutex_unlock(&hr_volumes_lock);
75 return NULL;
76}
77
78static errno_t hr_remove_volume(service_id_t svc_id)
79{
80 HR_DEBUG("hr_remove_volume(): (%" PRIun ")\n", svc_id);
81
82 fibril_mutex_lock(&hr_volumes_lock);
83 list_foreach(hr_volumes, lvolumes, hr_volume_t, vol) {
84 if (vol->svc_id == svc_id) {
85 hr_fini_devs(vol);
86 list_remove(&vol->lvolumes);
87 free(vol);
88 fibril_mutex_unlock(&hr_volumes_lock);
89 return EOK;
90 }
91 }
92
93 fibril_mutex_unlock(&hr_volumes_lock);
94 return ENOENT;
95}
96
97static void hr_create_srv(ipc_call_t *icall, bool assemble)
98{
99 HR_DEBUG("hr_create_srv()\n");
100
101 errno_t rc;
102 size_t i, size;
103 hr_config_t *cfg;
104 hr_volume_t *new_volume;
105 ipc_call_t call;
106
107 if (!async_data_write_receive(&call, &size)) {
108 async_answer_0(&call, EREFUSED);
109 async_answer_0(icall, EREFUSED);
110 return;
111 }
112
113 if (size != sizeof(hr_config_t)) {
114 async_answer_0(&call, EINVAL);
115 async_answer_0(icall, EINVAL);
116 return;
117 }
118
119 cfg = calloc(1, sizeof(hr_config_t));
120 if (cfg == NULL) {
121 async_answer_0(&call, ENOMEM);
122 async_answer_0(icall, ENOMEM);
123 return;
124 }
125
126 rc = async_data_write_finalize(&call, cfg, size);
127 if (rc != EOK) {
128 free(cfg);
129 async_answer_0(&call, rc);
130 async_answer_0(icall, rc);
131 return;
132 }
133
134 /*
135 * If there was a missing device provided
136 * for creation of a new array, abort
137 */
138 if (!assemble) {
139 for (i = 0; i < cfg->dev_no; i++) {
140 if (cfg->devs[i] == 0) {
141 HR_ERROR("missing device provided for array "
142 "creation, aborting");
143 free(cfg);
144 async_answer_0(icall, EINVAL);
145 return;
146 }
147 }
148 }
149
150 new_volume = calloc(1, sizeof(hr_volume_t));
151 if (new_volume == NULL) {
152 free(cfg);
153 async_answer_0(icall, ENOMEM);
154 return;
155 }
156
157 str_cpy(new_volume->devname, HR_DEVNAME_LEN, cfg->devname);
158 for (i = 0; i < cfg->dev_no; i++)
159 new_volume->extents[i].svc_id = cfg->devs[i];
160 new_volume->level = cfg->level;
161 new_volume->extent_no = cfg->dev_no;
162
163 if (assemble) {
164 if (cfg->level != HR_LVL_UNKNOWN)
165 HR_WARN("level manually set when assembling, ingoring");
166 new_volume->level = HR_LVL_UNKNOWN;
167 }
168
169 rc = hr_init_devs(new_volume);
170 if (rc != EOK) {
171 free(cfg);
172 free(new_volume);
173 async_answer_0(icall, rc);
174 return;
175 }
176
177 if (assemble) {
178 /* just bsize needed for reading metadata later */
179 rc = hr_check_devs(new_volume, NULL, &new_volume->bsize);
180 if (rc != EOK)
181 goto error;
182
183 rc = hr_fill_vol_from_meta(new_volume);
184 if (rc != EOK)
185 goto error;
186 }
187
188 switch (new_volume->level) {
189 case HR_LVL_1:
190 new_volume->RLQ = 0x00; /* XXX: yet unused */
191 new_volume->hr_ops.create = hr_raid1_create;
192 new_volume->hr_ops.init = hr_raid1_init;
193 new_volume->hr_ops.status_event = hr_raid1_status_event;
194 new_volume->hr_ops.add_hotspare = hr_raid1_add_hotspare;
195 break;
196 case HR_LVL_0:
197 new_volume->RLQ = 0x00;
198 new_volume->hr_ops.create = hr_raid0_create;
199 new_volume->hr_ops.init = hr_raid0_init;
200 new_volume->hr_ops.status_event = hr_raid0_status_event;
201 break;
202 case HR_LVL_4:
203 new_volume->hr_ops.create = hr_raid4_create;
204 new_volume->hr_ops.init = hr_raid4_init;
205 new_volume->hr_ops.status_event = hr_raid4_status_event;
206 new_volume->hr_ops.add_hotspare = hr_raid4_add_hotspare;
207 break;
208 case HR_LVL_5:
209 new_volume->RLQ = HR_RLQ_RAID5_NR;
210 new_volume->hr_ops.create = hr_raid5_create;
211 new_volume->hr_ops.init = hr_raid5_init;
212 new_volume->hr_ops.status_event = hr_raid5_status_event;
213 new_volume->hr_ops.add_hotspare = hr_raid5_add_hotspare;
214 break;
215 default:
216 HR_ERROR("unkown level: %d, aborting\n", new_volume->level);
217 rc = EINVAL;
218 goto error;
219 }
220
221 if (!assemble) {
222 new_volume->hr_ops.init(new_volume);
223 if (rc != EOK)
224 goto error;
225
226 rc = hr_write_meta_to_vol(new_volume);
227 if (rc != EOK)
228 goto error;
229 }
230
231 fibril_mutex_initialize(&new_volume->lock);
232
233 rc = new_volume->hr_ops.create(new_volume);
234 if (rc != EOK)
235 goto error;
236
237 fibril_mutex_lock(&hr_volumes_lock);
238 list_append(&new_volume->lvolumes, &hr_volumes);
239 fibril_mutex_unlock(&hr_volumes_lock);
240
241 if (assemble) {
242 HR_DEBUG("assembled volume \"%s\" (%" PRIun ")\n",
243 new_volume->devname, new_volume->svc_id);
244 } else {
245 HR_DEBUG("created volume \"%s\" (%" PRIun ")\n",
246 new_volume->devname, new_volume->svc_id);
247 }
248
249 free(cfg);
250 async_answer_0(icall, rc);
251 return;
252error:
253 free(cfg);
254 hr_fini_devs(new_volume);
255 free(new_volume);
256 async_answer_0(icall, rc);
257}
258
259static void hr_stop_srv(ipc_call_t *icall)
260{
261 HR_DEBUG("hr_stop_srv()\n");
262
263 errno_t rc = EOK;
264 service_id_t svc_id;
265 long fail_extent;
266 hr_volume_t *vol;
267
268 svc_id = ipc_get_arg1(icall);
269 fail_extent = (long)ipc_get_arg2(icall);
270
271 vol = hr_get_volume(svc_id);
272 if (vol == NULL) {
273 async_answer_0(icall, ENOENT);
274 return;
275 }
276
277 if (fail_extent == -1) {
278 rc = hr_remove_volume(svc_id);
279 if (rc != EOK) {
280 async_answer_0(icall, rc);
281 return;
282 }
283 rc = loc_service_unregister(hr_srv, svc_id);
284 } else {
285 /* fibril safe for now */
286 fibril_mutex_lock(&vol->lock);
287 hr_update_ext_status(vol, fail_extent, HR_EXT_FAILED);
288 fibril_mutex_unlock(&vol->lock);
289
290 vol->hr_ops.status_event(vol);
291 }
292 async_answer_0(icall, rc);
293}
294
295static void hr_add_hotspare_srv(ipc_call_t *icall)
296{
297 HR_DEBUG("hr_add_hotspare()\n");
298
299 errno_t rc = EOK;
300 service_id_t vol_svc_id;
301 service_id_t hotspare;
302 hr_volume_t *vol;
303
304 vol_svc_id = ipc_get_arg1(icall);
305 hotspare = ipc_get_arg2(icall);
306
307 vol = hr_get_volume(vol_svc_id);
308 if (vol == NULL) {
309 async_answer_0(icall, ENOENT);
310 return;
311 }
312
313 if (vol->hr_ops.add_hotspare == NULL) {
314 HR_DEBUG("hr_add_hotspare(): not supported on RAID level %d\n",
315 vol->level);
316 async_answer_0(icall, ENOTSUP);
317 return;
318 }
319
320 rc = vol->hr_ops.add_hotspare(vol, hotspare);
321
322 async_answer_0(icall, rc);
323}
324
325static void hr_print_status_srv(ipc_call_t *icall)
326{
327 HR_DEBUG("hr_status_srv()\n");
328
329 errno_t rc;
330 size_t vol_cnt = 0;
331 hr_vol_info_t info;
332 ipc_call_t call;
333 size_t size;
334
335 fibril_mutex_lock(&hr_volumes_lock);
336
337 vol_cnt = list_count(&hr_volumes);
338
339 if (!async_data_read_receive(&call, &size)) {
340 rc = EREFUSED;
341 goto error;
342 }
343
344 if (size != sizeof(size_t)) {
345 rc = EINVAL;
346 goto error;
347 }
348
349 rc = async_data_read_finalize(&call, &vol_cnt, size);
350 if (rc != EOK)
351 goto error;
352
353 list_foreach(hr_volumes, lvolumes, hr_volume_t, vol) {
354 memcpy(info.extents, vol->extents,
355 sizeof(hr_extent_t) * HR_MAX_EXTENTS);
356 memcpy(info.hotspares, vol->hotspares,
357 sizeof(hr_extent_t) * HR_MAX_HOTSPARES);
358 info.svc_id = vol->svc_id;
359 info.extent_no = vol->extent_no;
360 info.hotspare_no = vol->hotspare_no;
361 info.level = vol->level;
362 /* print usable number of blocks */
363 info.nblocks = vol->data_blkno;
364 info.strip_size = vol->strip_size;
365 info.bsize = vol->bsize;
366 info.status = vol->status;
367
368 if (!async_data_read_receive(&call, &size)) {
369 rc = EREFUSED;
370 goto error;
371 }
372
373 if (size != sizeof(hr_vol_info_t)) {
374 rc = EINVAL;
375 goto error;
376 }
377
378 rc = async_data_read_finalize(&call, &info, size);
379 if (rc != EOK)
380 goto error;
381 }
382
383 fibril_mutex_unlock(&hr_volumes_lock);
384 async_answer_0(icall, EOK);
385 return;
386error:
387 fibril_mutex_unlock(&hr_volumes_lock);
388 async_answer_0(&call, rc);
389 async_answer_0(icall, rc);
390}
391
392static void hr_ctl_conn(ipc_call_t *icall, void *arg)
393{
394 HR_DEBUG("hr_ctl_conn()\n");
395
396 async_accept_0(icall);
397
398 while (true) {
399 ipc_call_t call;
400 async_get_call(&call);
401 sysarg_t method = ipc_get_imethod(&call);
402
403 if (!method) {
404 async_answer_0(&call, EOK);
405 return;
406 }
407
408 switch (method) {
409 case HR_CREATE:
410 hr_create_srv(&call, false);
411 break;
412 case HR_ASSEMBLE:
413 hr_create_srv(&call, true);
414 break;
415 case HR_STOP:
416 hr_stop_srv(&call);
417 break;
418 case HR_ADD_HOTSPARE:
419 hr_add_hotspare_srv(&call);
420 break;
421 case HR_STATUS:
422 hr_print_status_srv(&call);
423 break;
424 default:
425 async_answer_0(&call, EINVAL);
426 }
427 }
428}
429
430static void hr_client_conn(ipc_call_t *icall, void *arg)
431{
432 HR_DEBUG("hr_client_conn()\n");
433
434 hr_volume_t *vol;
435
436 service_id_t svc_id = ipc_get_arg2(icall);
437
438 if (svc_id == ctl_sid) {
439 hr_ctl_conn(icall, arg);
440 } else {
441 HR_DEBUG("bd_conn()\n");
442 vol = hr_get_volume(svc_id);
443 if (vol == NULL)
444 async_answer_0(icall, EINVAL);
445 bd_conn(icall, &vol->hr_bds);
446 }
447}
448
449int main(int argc, char **argv)
450{
451 errno_t rc;
452
453 printf("%s: HelenRAID server\n", NAME);
454
455 rc = log_init(NAME);
456 if (rc != EOK) {
457 printf("%s: failed to initialize logging\n", NAME);
458 return 1;
459 }
460
461 fibril_mutex_initialize(&hr_volumes_lock);
462 list_initialize(&hr_volumes);
463
464 async_set_fallback_port_handler(hr_client_conn, NULL);
465
466 rc = loc_server_register(NAME, &hr_srv);
467 if (rc != EOK) {
468 HR_ERROR("failed registering server: %s", str_error(rc));
469 return EEXIST;
470 }
471
472 rc = loc_service_register(hr_srv, SERVICE_NAME_HR, &ctl_sid);
473 if (rc != EOK) {
474 HR_ERROR("failed registering service: %s", str_error(rc));
475 return EEXIST;
476 }
477
478 printf("%s: accepting connections\n", NAME);
479 task_retval(0);
480 async_manager();
481
482 return 0;
483}
484
485/** @}
486 */
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