1 /*-
2 * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org>
3 * Copyright (c) 2000 - 2008 Søren Schmidt <sos@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. 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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD: releng/10.4/sys/geom/raid/md_promise.c 299397 2016-05-11 00:36:31Z pfg $");
30
31 #include <sys/param.h>
32 #include <sys/bio.h>
33 #include <sys/endian.h>
34 #include <sys/kernel.h>
35 #include <sys/kobj.h>
36 #include <sys/limits.h>
37 #include <sys/lock.h>
38 #include <sys/malloc.h>
39 #include <sys/mutex.h>
40 #include <sys/systm.h>
41 #include <geom/geom.h>
42 #include "geom/raid/g_raid.h"
43 #include "g_raid_md_if.h"
44
45 static MALLOC_DEFINE(M_MD_PROMISE, "md_promise_data", "GEOM_RAID Promise metadata");
46
47 #define PROMISE_MAX_DISKS 8
48 #define PROMISE_MAX_SUBDISKS 2
49 #define PROMISE_META_OFFSET 14
50
51 struct promise_raid_disk {
52 uint8_t flags; /* Subdisk status. */
53 #define PROMISE_F_VALID 0x01
54 #define PROMISE_F_ONLINE 0x02
55 #define PROMISE_F_ASSIGNED 0x04
56 #define PROMISE_F_SPARE 0x08
57 #define PROMISE_F_DUPLICATE 0x10
58 #define PROMISE_F_REDIR 0x20
59 #define PROMISE_F_DOWN 0x40
60 #define PROMISE_F_READY 0x80
61
62 uint8_t number; /* Position in a volume. */
63 uint8_t channel; /* ATA channel number. */
64 uint8_t device; /* ATA device number. */
65 uint64_t id __packed; /* Subdisk ID. */
66 } __packed;
67
68 struct promise_raid_conf {
69 char promise_id[24];
70 #define PROMISE_MAGIC "Promise Technology, Inc."
71 #define FREEBSD_MAGIC "FreeBSD ATA driver RAID "
72
73 uint32_t dummy_0;
74 uint64_t magic_0;
75 #define PROMISE_MAGIC0(x) (((uint64_t)(x.channel) << 48) | \
76 ((uint64_t)(x.device != 0) << 56))
77 uint16_t magic_1;
78 uint32_t magic_2;
79 uint8_t filler1[470];
80
81 uint32_t integrity;
82 #define PROMISE_I_VALID 0x00000080
83
84 struct promise_raid_disk disk; /* This subdisk info. */
85 uint32_t disk_offset; /* Subdisk offset. */
86 uint32_t disk_sectors; /* Subdisk size */
87 uint32_t disk_rebuild; /* Rebuild position. */
88 uint16_t generation; /* Generation number. */
89 uint8_t status; /* Volume status. */
90 #define PROMISE_S_VALID 0x01
91 #define PROMISE_S_ONLINE 0x02
92 #define PROMISE_S_INITED 0x04
93 #define PROMISE_S_READY 0x08
94 #define PROMISE_S_DEGRADED 0x10
95 #define PROMISE_S_MARKED 0x20
96 #define PROMISE_S_MIGRATING 0x40
97 #define PROMISE_S_FUNCTIONAL 0x80
98
99 uint8_t type; /* Voluem type. */
100 #define PROMISE_T_RAID0 0x00
101 #define PROMISE_T_RAID1 0x01
102 #define PROMISE_T_RAID3 0x02
103 #define PROMISE_T_RAID5 0x04
104 #define PROMISE_T_SPAN 0x08
105 #define PROMISE_T_JBOD 0x10
106
107 uint8_t total_disks; /* Disks in this volume. */
108 uint8_t stripe_shift; /* Strip size. */
109 uint8_t array_width; /* Number of RAID0 stripes. */
110 uint8_t array_number; /* Global volume number. */
111 uint32_t total_sectors; /* Volume size. */
112 uint16_t cylinders; /* Volume geometry: C. */
113 uint8_t heads; /* Volume geometry: H. */
114 uint8_t sectors; /* Volume geometry: S. */
115 uint64_t volume_id __packed; /* Volume ID, */
116 struct promise_raid_disk disks[PROMISE_MAX_DISKS];
117 /* Subdisks in this volume. */
118 char name[32]; /* Volume label. */
119
120 uint32_t filler2[8];
121 uint32_t magic_3; /* Something related to rebuild. */
122 uint64_t rebuild_lba64; /* Per-volume rebuild position. */
123 uint32_t magic_4;
124 uint32_t magic_5;
125 uint32_t total_sectors_high;
126 uint8_t magic_6;
127 uint8_t sector_size;
128 uint16_t magic_7;
129 uint32_t magic_8[31];
130 uint32_t backup_time;
131 uint16_t magic_9;
132 uint32_t disk_offset_high;
133 uint32_t disk_sectors_high;
134 uint32_t disk_rebuild_high;
135 uint16_t magic_10;
136 uint32_t magic_11[3];
137 uint32_t filler3[284];
138 uint32_t checksum;
139 } __packed;
140
141 struct g_raid_md_promise_perdisk {
142 int pd_updated;
143 int pd_subdisks;
144 struct promise_raid_conf *pd_meta[PROMISE_MAX_SUBDISKS];
145 };
146
147 struct g_raid_md_promise_pervolume {
148 struct promise_raid_conf *pv_meta;
149 uint64_t pv_id;
150 uint16_t pv_generation;
151 int pv_disks_present;
152 int pv_started;
153 struct callout pv_start_co; /* STARTING state timer. */
154 };
155
156 static g_raid_md_create_t g_raid_md_create_promise;
157 static g_raid_md_taste_t g_raid_md_taste_promise;
158 static g_raid_md_event_t g_raid_md_event_promise;
159 static g_raid_md_volume_event_t g_raid_md_volume_event_promise;
160 static g_raid_md_ctl_t g_raid_md_ctl_promise;
161 static g_raid_md_write_t g_raid_md_write_promise;
162 static g_raid_md_fail_disk_t g_raid_md_fail_disk_promise;
163 static g_raid_md_free_disk_t g_raid_md_free_disk_promise;
164 static g_raid_md_free_volume_t g_raid_md_free_volume_promise;
165 static g_raid_md_free_t g_raid_md_free_promise;
166
167 static kobj_method_t g_raid_md_promise_methods[] = {
168 KOBJMETHOD(g_raid_md_create, g_raid_md_create_promise),
169 KOBJMETHOD(g_raid_md_taste, g_raid_md_taste_promise),
170 KOBJMETHOD(g_raid_md_event, g_raid_md_event_promise),
171 KOBJMETHOD(g_raid_md_volume_event, g_raid_md_volume_event_promise),
172 KOBJMETHOD(g_raid_md_ctl, g_raid_md_ctl_promise),
173 KOBJMETHOD(g_raid_md_write, g_raid_md_write_promise),
174 KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_promise),
175 KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_promise),
176 KOBJMETHOD(g_raid_md_free_volume, g_raid_md_free_volume_promise),
177 KOBJMETHOD(g_raid_md_free, g_raid_md_free_promise),
178 { 0, 0 }
179 };
180
181 static struct g_raid_md_class g_raid_md_promise_class = {
182 "Promise",
183 g_raid_md_promise_methods,
184 sizeof(struct g_raid_md_object),
185 .mdc_enable = 1,
186 .mdc_priority = 100
187 };
188
189
190 static void
191 g_raid_md_promise_print(struct promise_raid_conf *meta)
192 {
193 int i;
194
195 if (g_raid_debug < 1)
196 return;
197
198 printf("********* ATA Promise Metadata *********\n");
199 printf("promise_id <%.24s>\n", meta->promise_id);
200 printf("disk %02x %02x %02x %02x %016jx\n",
201 meta->disk.flags, meta->disk.number, meta->disk.channel,
202 meta->disk.device, meta->disk.id);
203 printf("disk_offset %u\n", meta->disk_offset);
204 printf("disk_sectors %u\n", meta->disk_sectors);
205 printf("disk_rebuild %u\n", meta->disk_rebuild);
206 printf("generation %u\n", meta->generation);
207 printf("status 0x%02x\n", meta->status);
208 printf("type %u\n", meta->type);
209 printf("total_disks %u\n", meta->total_disks);
210 printf("stripe_shift %u\n", meta->stripe_shift);
211 printf("array_width %u\n", meta->array_width);
212 printf("array_number %u\n", meta->array_number);
213 printf("total_sectors %u\n", meta->total_sectors);
214 printf("cylinders %u\n", meta->cylinders);
215 printf("heads %u\n", meta->heads);
216 printf("sectors %u\n", meta->sectors);
217 printf("volume_id 0x%016jx\n", meta->volume_id);
218 printf("disks:\n");
219 for (i = 0; i < PROMISE_MAX_DISKS; i++ ) {
220 printf(" %02x %02x %02x %02x %016jx\n",
221 meta->disks[i].flags, meta->disks[i].number,
222 meta->disks[i].channel, meta->disks[i].device,
223 meta->disks[i].id);
224 }
225 printf("name <%.32s>\n", meta->name);
226 printf("magic_3 0x%08x\n", meta->magic_3);
227 printf("rebuild_lba64 %ju\n", meta->rebuild_lba64);
228 printf("magic_4 0x%08x\n", meta->magic_4);
229 printf("magic_5 0x%08x\n", meta->magic_5);
230 printf("total_sectors_high 0x%08x\n", meta->total_sectors_high);
231 printf("sector_size %u\n", meta->sector_size);
232 printf("backup_time %d\n", meta->backup_time);
233 printf("disk_offset_high 0x%08x\n", meta->disk_offset_high);
234 printf("disk_sectors_high 0x%08x\n", meta->disk_sectors_high);
235 printf("disk_rebuild_high 0x%08x\n", meta->disk_rebuild_high);
236 printf("=================================================\n");
237 }
238
239 static struct promise_raid_conf *
240 promise_meta_copy(struct promise_raid_conf *meta)
241 {
242 struct promise_raid_conf *nmeta;
243
244 nmeta = malloc(sizeof(*nmeta), M_MD_PROMISE, M_WAITOK);
245 memcpy(nmeta, meta, sizeof(*nmeta));
246 return (nmeta);
247 }
248
249 static int
250 promise_meta_find_disk(struct promise_raid_conf *meta, uint64_t id)
251 {
252 int pos;
253
254 for (pos = 0; pos < meta->total_disks; pos++) {
255 if (meta->disks[pos].id == id)
256 return (pos);
257 }
258 return (-1);
259 }
260
261 static int
262 promise_meta_unused_range(struct promise_raid_conf **metaarr, int nsd,
263 off_t sectors, off_t *off, off_t *size)
264 {
265 off_t coff, csize, tmp;
266 int i, j;
267
268 sectors -= 131072;
269 *off = 0;
270 *size = 0;
271 coff = 0;
272 csize = sectors;
273 i = 0;
274 while (1) {
275 for (j = 0; j < nsd; j++) {
276 tmp = ((off_t)metaarr[j]->disk_offset_high << 32) +
277 metaarr[j]->disk_offset;
278 if (tmp >= coff)
279 csize = MIN(csize, tmp - coff);
280 }
281 if (csize > *size) {
282 *off = coff;
283 *size = csize;
284 }
285 if (i >= nsd)
286 break;
287 coff = ((off_t)metaarr[i]->disk_offset_high << 32) +
288 metaarr[i]->disk_offset +
289 ((off_t)metaarr[i]->disk_sectors_high << 32) +
290 metaarr[i]->disk_sectors;
291 csize = sectors - coff;
292 i++;
293 };
294 return ((*size > 0) ? 1 : 0);
295 }
296
297 static int
298 promise_meta_translate_disk(struct g_raid_volume *vol, int md_disk_pos)
299 {
300 int disk_pos, width;
301
302 if (md_disk_pos >= 0 && vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) {
303 width = vol->v_disks_count / 2;
304 disk_pos = (md_disk_pos / width) +
305 (md_disk_pos % width) * width;
306 } else
307 disk_pos = md_disk_pos;
308 return (disk_pos);
309 }
310
311 static void
312 promise_meta_get_name(struct promise_raid_conf *meta, char *buf)
313 {
314 int i;
315
316 strncpy(buf, meta->name, 32);
317 buf[32] = 0;
318 for (i = 31; i >= 0; i--) {
319 if (buf[i] > 0x20)
320 break;
321 buf[i] = 0;
322 }
323 }
324
325 static void
326 promise_meta_put_name(struct promise_raid_conf *meta, char *buf)
327 {
328
329 memset(meta->name, 0x20, 32);
330 memcpy(meta->name, buf, MIN(strlen(buf), 32));
331 }
332
333 static int
334 promise_meta_read(struct g_consumer *cp, struct promise_raid_conf **metaarr)
335 {
336 struct g_provider *pp;
337 struct promise_raid_conf *meta;
338 char *buf;
339 int error, i, subdisks;
340 uint32_t checksum, *ptr;
341
342 pp = cp->provider;
343 subdisks = 0;
344 next:
345 /* Read metadata block. */
346 buf = g_read_data(cp, pp->mediasize - pp->sectorsize *
347 (63 - subdisks * PROMISE_META_OFFSET),
348 pp->sectorsize * 4, &error);
349 if (buf == NULL) {
350 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).",
351 pp->name, error);
352 return (subdisks);
353 }
354 meta = (struct promise_raid_conf *)buf;
355
356 /* Check if this is an Promise RAID struct */
357 if (strncmp(meta->promise_id, PROMISE_MAGIC, strlen(PROMISE_MAGIC)) &&
358 strncmp(meta->promise_id, FREEBSD_MAGIC, strlen(FREEBSD_MAGIC))) {
359 if (subdisks == 0)
360 G_RAID_DEBUG(1,
361 "Promise signature check failed on %s", pp->name);
362 g_free(buf);
363 return (subdisks);
364 }
365 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK);
366 memcpy(meta, buf, MIN(sizeof(*meta), pp->sectorsize * 4));
367 g_free(buf);
368
369 /* Check metadata checksum. */
370 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++)
371 checksum += *ptr++;
372 if (checksum != meta->checksum) {
373 G_RAID_DEBUG(1, "Promise checksum check failed on %s", pp->name);
374 free(meta, M_MD_PROMISE);
375 return (subdisks);
376 }
377
378 if ((meta->integrity & PROMISE_I_VALID) == 0) {
379 G_RAID_DEBUG(1, "Promise metadata is invalid on %s", pp->name);
380 free(meta, M_MD_PROMISE);
381 return (subdisks);
382 }
383
384 if (meta->total_disks > PROMISE_MAX_DISKS) {
385 G_RAID_DEBUG(1, "Wrong number of disks on %s (%d)",
386 pp->name, meta->total_disks);
387 free(meta, M_MD_PROMISE);
388 return (subdisks);
389 }
390
391 /* Remove filler garbage from fields used in newer metadata. */
392 if (meta->disk_offset_high == 0x8b8c8d8e &&
393 meta->disk_sectors_high == 0x8788898a &&
394 meta->disk_rebuild_high == 0x83848586) {
395 meta->disk_offset_high = 0;
396 meta->disk_sectors_high = 0;
397 if (meta->disk_rebuild == UINT32_MAX)
398 meta->disk_rebuild_high = UINT32_MAX;
399 else
400 meta->disk_rebuild_high = 0;
401 if (meta->total_sectors_high == 0x15161718) {
402 meta->total_sectors_high = 0;
403 meta->backup_time = 0;
404 if (meta->rebuild_lba64 == 0x2122232425262728)
405 meta->rebuild_lba64 = UINT64_MAX;
406 }
407 }
408 if (meta->sector_size < 1 || meta->sector_size > 8)
409 meta->sector_size = 1;
410
411 /* Save this part and look for next. */
412 *metaarr = meta;
413 metaarr++;
414 subdisks++;
415 if (subdisks < PROMISE_MAX_SUBDISKS)
416 goto next;
417
418 return (subdisks);
419 }
420
421 static int
422 promise_meta_write(struct g_consumer *cp,
423 struct promise_raid_conf **metaarr, int nsd)
424 {
425 struct g_provider *pp;
426 struct promise_raid_conf *meta;
427 char *buf;
428 off_t off, size;
429 int error, i, subdisk, fake;
430 uint32_t checksum, *ptr;
431
432 pp = cp->provider;
433 subdisk = 0;
434 fake = 0;
435 next:
436 buf = malloc(pp->sectorsize * 4, M_MD_PROMISE, M_WAITOK | M_ZERO);
437 meta = NULL;
438 if (subdisk < nsd) {
439 meta = metaarr[subdisk];
440 } else if (!fake && promise_meta_unused_range(metaarr, nsd,
441 cp->provider->mediasize / cp->provider->sectorsize,
442 &off, &size)) {
443 /* Optionally add record for unused space. */
444 meta = (struct promise_raid_conf *)buf;
445 memcpy(&meta->promise_id[0], PROMISE_MAGIC,
446 sizeof(PROMISE_MAGIC) - 1);
447 meta->dummy_0 = 0x00020000;
448 meta->integrity = PROMISE_I_VALID;
449 meta->disk.flags = PROMISE_F_ONLINE | PROMISE_F_VALID;
450 meta->disk.number = 0xff;
451 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0);
452 meta->disk_offset_high = off >> 32;
453 meta->disk_offset = (uint32_t)off;
454 meta->disk_sectors_high = size >> 32;
455 meta->disk_sectors = (uint32_t)size;
456 meta->disk_rebuild_high = UINT32_MAX;
457 meta->disk_rebuild = UINT32_MAX;
458 fake = 1;
459 }
460 if (meta != NULL) {
461 /* Recalculate checksum for case if metadata were changed. */
462 meta->checksum = 0;
463 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++)
464 checksum += *ptr++;
465 meta->checksum = checksum;
466 memcpy(buf, meta, MIN(pp->sectorsize * 4, sizeof(*meta)));
467 }
468 error = g_write_data(cp, pp->mediasize - pp->sectorsize *
469 (63 - subdisk * PROMISE_META_OFFSET),
470 buf, pp->sectorsize * 4);
471 if (error != 0) {
472 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
473 pp->name, error);
474 }
475 free(buf, M_MD_PROMISE);
476
477 subdisk++;
478 if (subdisk < PROMISE_MAX_SUBDISKS)
479 goto next;
480
481 return (error);
482 }
483
484 static int
485 promise_meta_erase(struct g_consumer *cp)
486 {
487 struct g_provider *pp;
488 char *buf;
489 int error, subdisk;
490
491 pp = cp->provider;
492 buf = malloc(4 * pp->sectorsize, M_MD_PROMISE, M_WAITOK | M_ZERO);
493 for (subdisk = 0; subdisk < PROMISE_MAX_SUBDISKS; subdisk++) {
494 error = g_write_data(cp, pp->mediasize - pp->sectorsize *
495 (63 - subdisk * PROMISE_META_OFFSET),
496 buf, 4 * pp->sectorsize);
497 if (error != 0) {
498 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
499 pp->name, error);
500 }
501 }
502 free(buf, M_MD_PROMISE);
503 return (error);
504 }
505
506 static int
507 promise_meta_write_spare(struct g_consumer *cp)
508 {
509 struct promise_raid_conf *meta;
510 off_t tmp;
511 int error;
512
513 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO);
514 memcpy(&meta->promise_id[0], PROMISE_MAGIC, sizeof(PROMISE_MAGIC) - 1);
515 meta->dummy_0 = 0x00020000;
516 meta->integrity = PROMISE_I_VALID;
517 meta->disk.flags = PROMISE_F_SPARE | PROMISE_F_ONLINE | PROMISE_F_VALID;
518 meta->disk.number = 0xff;
519 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0);
520 tmp = cp->provider->mediasize / cp->provider->sectorsize - 131072;
521 meta->disk_sectors_high = tmp >> 32;
522 meta->disk_sectors = (uint32_t)tmp;
523 meta->disk_rebuild_high = UINT32_MAX;
524 meta->disk_rebuild = UINT32_MAX;
525 error = promise_meta_write(cp, &meta, 1);
526 free(meta, M_MD_PROMISE);
527 return (error);
528 }
529
530 static struct g_raid_volume *
531 g_raid_md_promise_get_volume(struct g_raid_softc *sc, uint64_t id)
532 {
533 struct g_raid_volume *vol;
534 struct g_raid_md_promise_pervolume *pv;
535
536 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
537 pv = vol->v_md_data;
538 if (pv->pv_id == id)
539 break;
540 }
541 return (vol);
542 }
543
544 static int
545 g_raid_md_promise_purge_volumes(struct g_raid_softc *sc)
546 {
547 struct g_raid_volume *vol, *tvol;
548 struct g_raid_md_promise_pervolume *pv;
549 int i, res;
550
551 res = 0;
552 TAILQ_FOREACH_SAFE(vol, &sc->sc_volumes, v_next, tvol) {
553 pv = vol->v_md_data;
554 if (!pv->pv_started || vol->v_stopping)
555 continue;
556 for (i = 0; i < vol->v_disks_count; i++) {
557 if (vol->v_subdisks[i].sd_state != G_RAID_SUBDISK_S_NONE)
558 break;
559 }
560 if (i >= vol->v_disks_count) {
561 g_raid_destroy_volume(vol);
562 res = 1;
563 }
564 }
565 return (res);
566 }
567
568 static int
569 g_raid_md_promise_purge_disks(struct g_raid_softc *sc)
570 {
571 struct g_raid_disk *disk, *tdisk;
572 struct g_raid_volume *vol;
573 struct g_raid_md_promise_perdisk *pd;
574 int i, j, res;
575
576 res = 0;
577 TAILQ_FOREACH_SAFE(disk, &sc->sc_disks, d_next, tdisk) {
578 if (disk->d_state == G_RAID_DISK_S_SPARE)
579 continue;
580 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
581
582 /* Scan for deleted volumes. */
583 for (i = 0; i < pd->pd_subdisks; ) {
584 vol = g_raid_md_promise_get_volume(sc,
585 pd->pd_meta[i]->volume_id);
586 if (vol != NULL && !vol->v_stopping) {
587 i++;
588 continue;
589 }
590 free(pd->pd_meta[i], M_MD_PROMISE);
591 for (j = i; j < pd->pd_subdisks - 1; j++)
592 pd->pd_meta[j] = pd->pd_meta[j + 1];
593 pd->pd_meta[pd->pd_subdisks - 1] = NULL;
594 pd->pd_subdisks--;
595 pd->pd_updated = 1;
596 }
597
598 /* If there is no metadata left - erase and delete disk. */
599 if (pd->pd_subdisks == 0) {
600 promise_meta_erase(disk->d_consumer);
601 g_raid_destroy_disk(disk);
602 res = 1;
603 }
604 }
605 return (res);
606 }
607
608 static int
609 g_raid_md_promise_supported(int level, int qual, int disks, int force)
610 {
611
612 if (disks > PROMISE_MAX_DISKS)
613 return (0);
614 switch (level) {
615 case G_RAID_VOLUME_RL_RAID0:
616 if (disks < 1)
617 return (0);
618 if (!force && disks < 2)
619 return (0);
620 break;
621 case G_RAID_VOLUME_RL_RAID1:
622 if (disks < 1)
623 return (0);
624 if (!force && (disks != 2))
625 return (0);
626 break;
627 case G_RAID_VOLUME_RL_RAID1E:
628 if (disks < 2)
629 return (0);
630 if (disks % 2 != 0)
631 return (0);
632 if (!force && (disks != 4))
633 return (0);
634 break;
635 case G_RAID_VOLUME_RL_SINGLE:
636 if (disks != 1)
637 return (0);
638 break;
639 case G_RAID_VOLUME_RL_CONCAT:
640 if (disks < 2)
641 return (0);
642 break;
643 case G_RAID_VOLUME_RL_RAID5:
644 if (disks < 3)
645 return (0);
646 if (qual != G_RAID_VOLUME_RLQ_R5LA)
647 return (0);
648 break;
649 default:
650 return (0);
651 }
652 if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE)
653 return (0);
654 return (1);
655 }
656
657 static int
658 g_raid_md_promise_start_disk(struct g_raid_disk *disk, int sdn,
659 struct g_raid_volume *vol)
660 {
661 struct g_raid_softc *sc;
662 struct g_raid_subdisk *sd;
663 struct g_raid_md_promise_perdisk *pd;
664 struct g_raid_md_promise_pervolume *pv;
665 struct promise_raid_conf *meta;
666 off_t eoff, esize, size;
667 int disk_pos, md_disk_pos, i, resurrection = 0;
668
669 sc = disk->d_softc;
670 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
671
672 pv = vol->v_md_data;
673 meta = pv->pv_meta;
674
675 if (sdn >= 0) {
676 /* Find disk position in metadata by it's serial. */
677 md_disk_pos = promise_meta_find_disk(meta, pd->pd_meta[sdn]->disk.id);
678 /* For RAID0+1 we need to translate order. */
679 disk_pos = promise_meta_translate_disk(vol, md_disk_pos);
680 } else {
681 md_disk_pos = -1;
682 disk_pos = -1;
683 }
684 if (disk_pos < 0) {
685 G_RAID_DEBUG1(1, sc, "Disk %s is not part of the volume %s",
686 g_raid_get_diskname(disk), vol->v_name);
687 /* Failed stale disk is useless for us. */
688 if (sdn >= 0 &&
689 pd->pd_meta[sdn]->disk.flags & PROMISE_F_DOWN) {
690 g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED);
691 return (0);
692 }
693 /* If we were given specific metadata subdisk - erase it. */
694 if (sdn >= 0) {
695 free(pd->pd_meta[sdn], M_MD_PROMISE);
696 for (i = sdn; i < pd->pd_subdisks - 1; i++)
697 pd->pd_meta[i] = pd->pd_meta[i + 1];
698 pd->pd_meta[pd->pd_subdisks - 1] = NULL;
699 pd->pd_subdisks--;
700 }
701 /* If we are in the start process, that's all for now. */
702 if (!pv->pv_started)
703 goto nofit;
704 /*
705 * If we have already started - try to get use of the disk.
706 * Try to replace OFFLINE disks first, then FAILED.
707 */
708 promise_meta_unused_range(pd->pd_meta, pd->pd_subdisks,
709 disk->d_consumer->provider->mediasize /
710 disk->d_consumer->provider->sectorsize,
711 &eoff, &esize);
712 if (esize == 0) {
713 G_RAID_DEBUG1(1, sc, "No free space on disk %s",
714 g_raid_get_diskname(disk));
715 goto nofit;
716 }
717 size = INT64_MAX;
718 for (i = 0; i < vol->v_disks_count; i++) {
719 sd = &vol->v_subdisks[i];
720 if (sd->sd_state != G_RAID_SUBDISK_S_NONE)
721 size = sd->sd_size;
722 if (sd->sd_state <= G_RAID_SUBDISK_S_FAILED &&
723 (disk_pos < 0 ||
724 vol->v_subdisks[i].sd_state < sd->sd_state))
725 disk_pos = i;
726 }
727 if (disk_pos >= 0 &&
728 vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT &&
729 (off_t)esize * 512 < size) {
730 G_RAID_DEBUG1(1, sc, "Disk %s free space "
731 "is too small (%ju < %ju)",
732 g_raid_get_diskname(disk),
733 (off_t)esize * 512, size);
734 disk_pos = -1;
735 }
736 if (disk_pos >= 0) {
737 if (vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT)
738 esize = size / 512;
739 /* For RAID0+1 we need to translate order. */
740 md_disk_pos = promise_meta_translate_disk(vol, disk_pos);
741 } else {
742 nofit:
743 if (pd->pd_subdisks == 0) {
744 g_raid_change_disk_state(disk,
745 G_RAID_DISK_S_SPARE);
746 }
747 return (0);
748 }
749 G_RAID_DEBUG1(1, sc, "Disk %s takes pos %d in the volume %s",
750 g_raid_get_diskname(disk), disk_pos, vol->v_name);
751 resurrection = 1;
752 }
753
754 sd = &vol->v_subdisks[disk_pos];
755
756 if (resurrection && sd->sd_disk != NULL) {
757 g_raid_change_disk_state(sd->sd_disk,
758 G_RAID_DISK_S_STALE_FAILED);
759 TAILQ_REMOVE(&sd->sd_disk->d_subdisks,
760 sd, sd_next);
761 }
762 vol->v_subdisks[disk_pos].sd_disk = disk;
763 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
764
765 /* Welcome the new disk. */
766 if (resurrection)
767 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
768 else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN)
769 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
770 else
771 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
772
773 if (resurrection) {
774 sd->sd_offset = (off_t)eoff * 512;
775 sd->sd_size = (off_t)esize * 512;
776 } else {
777 sd->sd_offset = (((off_t)pd->pd_meta[sdn]->disk_offset_high
778 << 32) + pd->pd_meta[sdn]->disk_offset) * 512;
779 sd->sd_size = (((off_t)pd->pd_meta[sdn]->disk_sectors_high
780 << 32) + pd->pd_meta[sdn]->disk_sectors) * 512;
781 }
782
783 if (resurrection) {
784 /* Stale disk, almost same as new. */
785 g_raid_change_subdisk_state(sd,
786 G_RAID_SUBDISK_S_NEW);
787 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN) {
788 /* Failed disk. */
789 g_raid_change_subdisk_state(sd,
790 G_RAID_SUBDISK_S_FAILED);
791 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_REDIR) {
792 /* Rebuilding disk. */
793 g_raid_change_subdisk_state(sd,
794 G_RAID_SUBDISK_S_REBUILD);
795 if (pd->pd_meta[sdn]->generation != meta->generation)
796 sd->sd_rebuild_pos = 0;
797 else {
798 sd->sd_rebuild_pos =
799 (((off_t)pd->pd_meta[sdn]->disk_rebuild_high << 32) +
800 pd->pd_meta[sdn]->disk_rebuild) * 512;
801 }
802 } else if (!(meta->disks[md_disk_pos].flags & PROMISE_F_ONLINE)) {
803 /* Rebuilding disk. */
804 g_raid_change_subdisk_state(sd,
805 G_RAID_SUBDISK_S_NEW);
806 } else if (pd->pd_meta[sdn]->generation != meta->generation ||
807 (meta->status & PROMISE_S_MARKED)) {
808 /* Stale disk or dirty volume (unclean shutdown). */
809 g_raid_change_subdisk_state(sd,
810 G_RAID_SUBDISK_S_STALE);
811 } else {
812 /* Up to date disk. */
813 g_raid_change_subdisk_state(sd,
814 G_RAID_SUBDISK_S_ACTIVE);
815 }
816 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
817 G_RAID_EVENT_SUBDISK);
818
819 return (resurrection);
820 }
821
822 static void
823 g_raid_md_promise_refill(struct g_raid_softc *sc)
824 {
825 struct g_raid_volume *vol;
826 struct g_raid_subdisk *sd;
827 struct g_raid_disk *disk;
828 struct g_raid_md_object *md;
829 struct g_raid_md_promise_perdisk *pd;
830 struct g_raid_md_promise_pervolume *pv;
831 int update, updated, i, bad;
832
833 md = sc->sc_md;
834 restart:
835 updated = 0;
836 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
837 pv = vol->v_md_data;
838 if (!pv->pv_started || vol->v_stopping)
839 continue;
840
841 /* Search for subdisk that needs replacement. */
842 bad = 0;
843 for (i = 0; i < vol->v_disks_count; i++) {
844 sd = &vol->v_subdisks[i];
845 if (sd->sd_state == G_RAID_SUBDISK_S_NONE ||
846 sd->sd_state == G_RAID_SUBDISK_S_FAILED)
847 bad = 1;
848 }
849 if (!bad)
850 continue;
851
852 G_RAID_DEBUG1(1, sc, "Volume %s is not complete, "
853 "trying to refill.", vol->v_name);
854
855 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
856 /* Skip failed. */
857 if (disk->d_state < G_RAID_DISK_S_SPARE)
858 continue;
859 /* Skip already used by this volume. */
860 for (i = 0; i < vol->v_disks_count; i++) {
861 sd = &vol->v_subdisks[i];
862 if (sd->sd_disk == disk)
863 break;
864 }
865 if (i < vol->v_disks_count)
866 continue;
867
868 /* Try to use disk if it has empty extents. */
869 pd = disk->d_md_data;
870 if (pd->pd_subdisks < PROMISE_MAX_SUBDISKS) {
871 update =
872 g_raid_md_promise_start_disk(disk, -1, vol);
873 } else
874 update = 0;
875 if (update) {
876 updated = 1;
877 g_raid_md_write_promise(md, vol, NULL, disk);
878 break;
879 }
880 }
881 }
882 if (updated)
883 goto restart;
884 }
885
886 static void
887 g_raid_md_promise_start(struct g_raid_volume *vol)
888 {
889 struct g_raid_softc *sc;
890 struct g_raid_subdisk *sd;
891 struct g_raid_disk *disk;
892 struct g_raid_md_object *md;
893 struct g_raid_md_promise_perdisk *pd;
894 struct g_raid_md_promise_pervolume *pv;
895 struct promise_raid_conf *meta;
896 u_int i;
897
898 sc = vol->v_softc;
899 md = sc->sc_md;
900 pv = vol->v_md_data;
901 meta = pv->pv_meta;
902
903 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE;
904 if (meta->type == PROMISE_T_RAID0)
905 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0;
906 else if (meta->type == PROMISE_T_RAID1) {
907 if (meta->array_width == 1)
908 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1;
909 else
910 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
911 } else if (meta->type == PROMISE_T_RAID3)
912 vol->v_raid_level = G_RAID_VOLUME_RL_RAID3;
913 else if (meta->type == PROMISE_T_RAID5) {
914 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5;
915 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LA;
916 } else if (meta->type == PROMISE_T_SPAN)
917 vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT;
918 else if (meta->type == PROMISE_T_JBOD)
919 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE;
920 else
921 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN;
922 vol->v_strip_size = 512 << meta->stripe_shift; //ZZZ
923 vol->v_disks_count = meta->total_disks;
924 vol->v_mediasize = (off_t)meta->total_sectors * 512; //ZZZ
925 if (meta->total_sectors_high < 256) /* If value looks sane. */
926 vol->v_mediasize +=
927 ((off_t)meta->total_sectors_high << 32) * 512; //ZZZ
928 vol->v_sectorsize = 512 * meta->sector_size;
929 for (i = 0; i < vol->v_disks_count; i++) {
930 sd = &vol->v_subdisks[i];
931 sd->sd_offset = (((off_t)meta->disk_offset_high << 32) +
932 meta->disk_offset) * 512;
933 sd->sd_size = (((off_t)meta->disk_sectors_high << 32) +
934 meta->disk_sectors) * 512;
935 }
936 g_raid_start_volume(vol);
937
938 /* Make all disks found till the moment take their places. */
939 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
940 pd = disk->d_md_data;
941 for (i = 0; i < pd->pd_subdisks; i++) {
942 if (pd->pd_meta[i]->volume_id == meta->volume_id)
943 g_raid_md_promise_start_disk(disk, i, vol);
944 }
945 }
946
947 pv->pv_started = 1;
948 callout_stop(&pv->pv_start_co);
949 G_RAID_DEBUG1(0, sc, "Volume started.");
950 g_raid_md_write_promise(md, vol, NULL, NULL);
951
952 /* Pickup any STALE/SPARE disks to refill array if needed. */
953 g_raid_md_promise_refill(sc);
954
955 g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME);
956 }
957
958 static void
959 g_raid_promise_go(void *arg)
960 {
961 struct g_raid_volume *vol;
962 struct g_raid_softc *sc;
963 struct g_raid_md_promise_pervolume *pv;
964
965 vol = arg;
966 pv = vol->v_md_data;
967 sc = vol->v_softc;
968 if (!pv->pv_started) {
969 G_RAID_DEBUG1(0, sc, "Force volume start due to timeout.");
970 g_raid_event_send(vol, G_RAID_VOLUME_E_STARTMD,
971 G_RAID_EVENT_VOLUME);
972 }
973 }
974
975 static void
976 g_raid_md_promise_new_disk(struct g_raid_disk *disk)
977 {
978 struct g_raid_softc *sc;
979 struct g_raid_md_object *md;
980 struct promise_raid_conf *pdmeta;
981 struct g_raid_md_promise_perdisk *pd;
982 struct g_raid_md_promise_pervolume *pv;
983 struct g_raid_volume *vol;
984 int i;
985 char buf[33];
986
987 sc = disk->d_softc;
988 md = sc->sc_md;
989 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
990
991 if (pd->pd_subdisks == 0) {
992 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
993 g_raid_md_promise_refill(sc);
994 return;
995 }
996
997 for (i = 0; i < pd->pd_subdisks; i++) {
998 pdmeta = pd->pd_meta[i];
999
1000 /* Look for volume with matching ID. */
1001 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id);
1002 if (vol == NULL) {
1003 promise_meta_get_name(pdmeta, buf);
1004 vol = g_raid_create_volume(sc, buf, pdmeta->array_number);
1005 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO);
1006 pv->pv_id = pdmeta->volume_id;
1007 vol->v_md_data = pv;
1008 callout_init(&pv->pv_start_co, 1);
1009 callout_reset(&pv->pv_start_co,
1010 g_raid_start_timeout * hz,
1011 g_raid_promise_go, vol);
1012 } else
1013 pv = vol->v_md_data;
1014
1015 /* If we haven't started yet - check metadata freshness. */
1016 if (pv->pv_meta == NULL || !pv->pv_started) {
1017 if (pv->pv_meta == NULL ||
1018 ((int16_t)(pdmeta->generation - pv->pv_generation)) > 0) {
1019 G_RAID_DEBUG1(1, sc, "Newer disk");
1020 if (pv->pv_meta != NULL)
1021 free(pv->pv_meta, M_MD_PROMISE);
1022 pv->pv_meta = promise_meta_copy(pdmeta);
1023 pv->pv_generation = pv->pv_meta->generation;
1024 pv->pv_disks_present = 1;
1025 } else if (pdmeta->generation == pv->pv_generation) {
1026 pv->pv_disks_present++;
1027 G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)",
1028 pv->pv_disks_present,
1029 pv->pv_meta->total_disks);
1030 } else {
1031 G_RAID_DEBUG1(1, sc, "Older disk");
1032 }
1033 }
1034 }
1035
1036 for (i = 0; i < pd->pd_subdisks; i++) {
1037 pdmeta = pd->pd_meta[i];
1038
1039 /* Look for volume with matching ID. */
1040 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id);
1041 if (vol == NULL)
1042 continue;
1043 pv = vol->v_md_data;
1044
1045 if (pv->pv_started) {
1046 if (g_raid_md_promise_start_disk(disk, i, vol))
1047 g_raid_md_write_promise(md, vol, NULL, NULL);
1048 } else {
1049 /* If we collected all needed disks - start array. */
1050 if (pv->pv_disks_present == pv->pv_meta->total_disks)
1051 g_raid_md_promise_start(vol);
1052 }
1053 }
1054 }
1055
1056 static int
1057 g_raid_md_create_promise(struct g_raid_md_object *md, struct g_class *mp,
1058 struct g_geom **gp)
1059 {
1060 struct g_geom *geom;
1061 struct g_raid_softc *sc;
1062
1063 /* Search for existing node. */
1064 LIST_FOREACH(geom, &mp->geom, geom) {
1065 sc = geom->softc;
1066 if (sc == NULL)
1067 continue;
1068 if (sc->sc_stopping != 0)
1069 continue;
1070 if (sc->sc_md->mdo_class != md->mdo_class)
1071 continue;
1072 break;
1073 }
1074 if (geom != NULL) {
1075 *gp = geom;
1076 return (G_RAID_MD_TASTE_EXISTING);
1077 }
1078
1079 /* Create new one if not found. */
1080 sc = g_raid_create_node(mp, "Promise", md);
1081 if (sc == NULL)
1082 return (G_RAID_MD_TASTE_FAIL);
1083 md->mdo_softc = sc;
1084 *gp = sc->sc_geom;
1085 return (G_RAID_MD_TASTE_NEW);
1086 }
1087
1088 static int
1089 g_raid_md_taste_promise(struct g_raid_md_object *md, struct g_class *mp,
1090 struct g_consumer *cp, struct g_geom **gp)
1091 {
1092 struct g_consumer *rcp;
1093 struct g_provider *pp;
1094 struct g_raid_softc *sc;
1095 struct g_raid_disk *disk;
1096 struct promise_raid_conf *meta, *metaarr[4];
1097 struct g_raid_md_promise_perdisk *pd;
1098 struct g_geom *geom;
1099 int i, j, result, len, subdisks;
1100 char name[16];
1101 uint16_t vendor;
1102
1103 G_RAID_DEBUG(1, "Tasting Promise on %s", cp->provider->name);
1104 pp = cp->provider;
1105
1106 /* Read metadata from device. */
1107 meta = NULL;
1108 g_topology_unlock();
1109 vendor = 0xffff;
1110 len = sizeof(vendor);
1111 if (pp->geom->rank == 1)
1112 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor);
1113 subdisks = promise_meta_read(cp, metaarr);
1114 g_topology_lock();
1115 if (subdisks == 0) {
1116 if (g_raid_aggressive_spare) {
1117 if (vendor == 0x105a || vendor == 0x1002) {
1118 G_RAID_DEBUG(1,
1119 "No Promise metadata, forcing spare.");
1120 goto search;
1121 } else {
1122 G_RAID_DEBUG(1,
1123 "Promise/ATI vendor mismatch "
1124 "0x%04x != 0x105a/0x1002",
1125 vendor);
1126 }
1127 }
1128 return (G_RAID_MD_TASTE_FAIL);
1129 }
1130
1131 /* Metadata valid. Print it. */
1132 for (i = 0; i < subdisks; i++)
1133 g_raid_md_promise_print(metaarr[i]);
1134
1135 /* Purge meaningless (empty/spare) records. */
1136 for (i = 0; i < subdisks; ) {
1137 if (metaarr[i]->disk.flags & PROMISE_F_ASSIGNED) {
1138 i++;
1139 continue;
1140 }
1141 free(metaarr[i], M_MD_PROMISE);
1142 for (j = i; j < subdisks - 1; j++)
1143 metaarr[i] = metaarr[j + 1];
1144 metaarr[subdisks - 1] = NULL;
1145 subdisks--;
1146 }
1147
1148 search:
1149 /* Search for matching node. */
1150 sc = NULL;
1151 LIST_FOREACH(geom, &mp->geom, geom) {
1152 sc = geom->softc;
1153 if (sc == NULL)
1154 continue;
1155 if (sc->sc_stopping != 0)
1156 continue;
1157 if (sc->sc_md->mdo_class != md->mdo_class)
1158 continue;
1159 break;
1160 }
1161
1162 /* Found matching node. */
1163 if (geom != NULL) {
1164 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
1165 result = G_RAID_MD_TASTE_EXISTING;
1166
1167 } else { /* Not found matching node -- create one. */
1168 result = G_RAID_MD_TASTE_NEW;
1169 snprintf(name, sizeof(name), "Promise");
1170 sc = g_raid_create_node(mp, name, md);
1171 md->mdo_softc = sc;
1172 geom = sc->sc_geom;
1173 }
1174
1175 /* There is no return after this point, so we close passed consumer. */
1176 g_access(cp, -1, 0, 0);
1177
1178 rcp = g_new_consumer(geom);
1179 rcp->flags |= G_CF_DIRECT_RECEIVE;
1180 g_attach(rcp, pp);
1181 if (g_access(rcp, 1, 1, 1) != 0)
1182 ; //goto fail1;
1183
1184 g_topology_unlock();
1185 sx_xlock(&sc->sc_lock);
1186
1187 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO);
1188 pd->pd_subdisks = subdisks;
1189 for (i = 0; i < subdisks; i++)
1190 pd->pd_meta[i] = metaarr[i];
1191 disk = g_raid_create_disk(sc);
1192 disk->d_md_data = (void *)pd;
1193 disk->d_consumer = rcp;
1194 rcp->private = disk;
1195
1196 g_raid_get_disk_info(disk);
1197
1198 g_raid_md_promise_new_disk(disk);
1199
1200 sx_xunlock(&sc->sc_lock);
1201 g_topology_lock();
1202 *gp = geom;
1203 return (result);
1204 }
1205
1206 static int
1207 g_raid_md_event_promise(struct g_raid_md_object *md,
1208 struct g_raid_disk *disk, u_int event)
1209 {
1210 struct g_raid_softc *sc;
1211
1212 sc = md->mdo_softc;
1213 if (disk == NULL)
1214 return (-1);
1215 switch (event) {
1216 case G_RAID_DISK_E_DISCONNECTED:
1217 /* Delete disk. */
1218 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
1219 g_raid_destroy_disk(disk);
1220 g_raid_md_promise_purge_volumes(sc);
1221
1222 /* Write updated metadata to all disks. */
1223 g_raid_md_write_promise(md, NULL, NULL, NULL);
1224
1225 /* Check if anything left. */
1226 if (g_raid_ndisks(sc, -1) == 0)
1227 g_raid_destroy_node(sc, 0);
1228 else
1229 g_raid_md_promise_refill(sc);
1230 return (0);
1231 }
1232 return (-2);
1233 }
1234
1235 static int
1236 g_raid_md_volume_event_promise(struct g_raid_md_object *md,
1237 struct g_raid_volume *vol, u_int event)
1238 {
1239 struct g_raid_md_promise_pervolume *pv;
1240
1241 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data;
1242 switch (event) {
1243 case G_RAID_VOLUME_E_STARTMD:
1244 if (!pv->pv_started)
1245 g_raid_md_promise_start(vol);
1246 return (0);
1247 }
1248 return (-2);
1249 }
1250
1251 static int
1252 g_raid_md_ctl_promise(struct g_raid_md_object *md,
1253 struct gctl_req *req)
1254 {
1255 struct g_raid_softc *sc;
1256 struct g_raid_volume *vol, *vol1;
1257 struct g_raid_subdisk *sd;
1258 struct g_raid_disk *disk, *disks[PROMISE_MAX_DISKS];
1259 struct g_raid_md_promise_perdisk *pd;
1260 struct g_raid_md_promise_pervolume *pv;
1261 struct g_consumer *cp;
1262 struct g_provider *pp;
1263 char arg[16];
1264 const char *nodename, *verb, *volname, *levelname, *diskname;
1265 char *tmp;
1266 int *nargs, *force;
1267 off_t esize, offs[PROMISE_MAX_DISKS], size, sectorsize, strip;
1268 intmax_t *sizearg, *striparg;
1269 int numdisks, i, len, level, qual;
1270 int error;
1271
1272 sc = md->mdo_softc;
1273 verb = gctl_get_param(req, "verb", NULL);
1274 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
1275 error = 0;
1276 if (strcmp(verb, "label") == 0) {
1277
1278 if (*nargs < 4) {
1279 gctl_error(req, "Invalid number of arguments.");
1280 return (-1);
1281 }
1282 volname = gctl_get_asciiparam(req, "arg1");
1283 if (volname == NULL) {
1284 gctl_error(req, "No volume name.");
1285 return (-2);
1286 }
1287 levelname = gctl_get_asciiparam(req, "arg2");
1288 if (levelname == NULL) {
1289 gctl_error(req, "No RAID level.");
1290 return (-3);
1291 }
1292 if (strcasecmp(levelname, "RAID5") == 0)
1293 levelname = "RAID5-LA";
1294 if (g_raid_volume_str2level(levelname, &level, &qual)) {
1295 gctl_error(req, "Unknown RAID level '%s'.", levelname);
1296 return (-4);
1297 }
1298 numdisks = *nargs - 3;
1299 force = gctl_get_paraml(req, "force", sizeof(*force));
1300 if (!g_raid_md_promise_supported(level, qual, numdisks,
1301 force ? *force : 0)) {
1302 gctl_error(req, "Unsupported RAID level "
1303 "(0x%02x/0x%02x), or number of disks (%d).",
1304 level, qual, numdisks);
1305 return (-5);
1306 }
1307
1308 /* Search for disks, connect them and probe. */
1309 size = INT64_MAX;
1310 sectorsize = 0;
1311 bzero(disks, sizeof(disks));
1312 bzero(offs, sizeof(offs));
1313 for (i = 0; i < numdisks; i++) {
1314 snprintf(arg, sizeof(arg), "arg%d", i + 3);
1315 diskname = gctl_get_asciiparam(req, arg);
1316 if (diskname == NULL) {
1317 gctl_error(req, "No disk name (%s).", arg);
1318 error = -6;
1319 break;
1320 }
1321 if (strcmp(diskname, "NONE") == 0)
1322 continue;
1323
1324 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1325 if (disk->d_consumer != NULL &&
1326 disk->d_consumer->provider != NULL &&
1327 strcmp(disk->d_consumer->provider->name,
1328 diskname) == 0)
1329 break;
1330 }
1331 if (disk != NULL) {
1332 if (disk->d_state != G_RAID_DISK_S_ACTIVE) {
1333 gctl_error(req, "Disk '%s' is in a "
1334 "wrong state (%s).", diskname,
1335 g_raid_disk_state2str(disk->d_state));
1336 error = -7;
1337 break;
1338 }
1339 pd = disk->d_md_data;
1340 if (pd->pd_subdisks >= PROMISE_MAX_SUBDISKS) {
1341 gctl_error(req, "Disk '%s' already "
1342 "used by %d volumes.",
1343 diskname, pd->pd_subdisks);
1344 error = -7;
1345 break;
1346 }
1347 pp = disk->d_consumer->provider;
1348 disks[i] = disk;
1349 promise_meta_unused_range(pd->pd_meta,
1350 pd->pd_subdisks,
1351 pp->mediasize / pp->sectorsize,
1352 &offs[i], &esize);
1353 size = MIN(size, (off_t)esize * pp->sectorsize);
1354 sectorsize = MAX(sectorsize, pp->sectorsize);
1355 continue;
1356 }
1357
1358 g_topology_lock();
1359 cp = g_raid_open_consumer(sc, diskname);
1360 if (cp == NULL) {
1361 gctl_error(req, "Can't open disk '%s'.",
1362 diskname);
1363 g_topology_unlock();
1364 error = -8;
1365 break;
1366 }
1367 pp = cp->provider;
1368 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO);
1369 disk = g_raid_create_disk(sc);
1370 disk->d_md_data = (void *)pd;
1371 disk->d_consumer = cp;
1372 disks[i] = disk;
1373 cp->private = disk;
1374 g_topology_unlock();
1375
1376 g_raid_get_disk_info(disk);
1377
1378 /* Reserve some space for metadata. */
1379 size = MIN(size, pp->mediasize - 131072llu * pp->sectorsize);
1380 sectorsize = MAX(sectorsize, pp->sectorsize);
1381 }
1382 if (error != 0) {
1383 for (i = 0; i < numdisks; i++) {
1384 if (disks[i] != NULL &&
1385 disks[i]->d_state == G_RAID_DISK_S_NONE)
1386 g_raid_destroy_disk(disks[i]);
1387 }
1388 return (error);
1389 }
1390
1391 if (sectorsize <= 0) {
1392 gctl_error(req, "Can't get sector size.");
1393 return (-8);
1394 }
1395
1396 /* Handle size argument. */
1397 len = sizeof(*sizearg);
1398 sizearg = gctl_get_param(req, "size", &len);
1399 if (sizearg != NULL && len == sizeof(*sizearg) &&
1400 *sizearg > 0) {
1401 if (*sizearg > size) {
1402 gctl_error(req, "Size too big %lld > %lld.",
1403 (long long)*sizearg, (long long)size);
1404 return (-9);
1405 }
1406 size = *sizearg;
1407 }
1408
1409 /* Handle strip argument. */
1410 strip = 131072;
1411 len = sizeof(*striparg);
1412 striparg = gctl_get_param(req, "strip", &len);
1413 if (striparg != NULL && len == sizeof(*striparg) &&
1414 *striparg > 0) {
1415 if (*striparg < sectorsize) {
1416 gctl_error(req, "Strip size too small.");
1417 return (-10);
1418 }
1419 if (*striparg % sectorsize != 0) {
1420 gctl_error(req, "Incorrect strip size.");
1421 return (-11);
1422 }
1423 strip = *striparg;
1424 }
1425
1426 /* Round size down to strip or sector. */
1427 if (level == G_RAID_VOLUME_RL_RAID1 ||
1428 level == G_RAID_VOLUME_RL_SINGLE ||
1429 level == G_RAID_VOLUME_RL_CONCAT)
1430 size -= (size % sectorsize);
1431 else if (level == G_RAID_VOLUME_RL_RAID1E &&
1432 (numdisks & 1) != 0)
1433 size -= (size % (2 * strip));
1434 else
1435 size -= (size % strip);
1436 if (size <= 0) {
1437 gctl_error(req, "Size too small.");
1438 return (-13);
1439 }
1440
1441 /* We have all we need, create things: volume, ... */
1442 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO);
1443 arc4rand(&pv->pv_id, sizeof(pv->pv_id), 0);
1444 pv->pv_generation = 0;
1445 pv->pv_started = 1;
1446 vol = g_raid_create_volume(sc, volname, -1);
1447 vol->v_md_data = pv;
1448 vol->v_raid_level = level;
1449 vol->v_raid_level_qualifier = qual;
1450 vol->v_strip_size = strip;
1451 vol->v_disks_count = numdisks;
1452 if (level == G_RAID_VOLUME_RL_RAID0 ||
1453 level == G_RAID_VOLUME_RL_CONCAT ||
1454 level == G_RAID_VOLUME_RL_SINGLE)
1455 vol->v_mediasize = size * numdisks;
1456 else if (level == G_RAID_VOLUME_RL_RAID1)
1457 vol->v_mediasize = size;
1458 else if (level == G_RAID_VOLUME_RL_RAID3 ||
1459 level == G_RAID_VOLUME_RL_RAID5)
1460 vol->v_mediasize = size * (numdisks - 1);
1461 else { /* RAID1E */
1462 vol->v_mediasize = ((size * numdisks) / strip / 2) *
1463 strip;
1464 }
1465 vol->v_sectorsize = sectorsize;
1466 g_raid_start_volume(vol);
1467
1468 /* , and subdisks. */
1469 for (i = 0; i < numdisks; i++) {
1470 disk = disks[i];
1471 sd = &vol->v_subdisks[i];
1472 sd->sd_disk = disk;
1473 sd->sd_offset = (off_t)offs[i] * 512;
1474 sd->sd_size = size;
1475 if (disk == NULL)
1476 continue;
1477 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
1478 g_raid_change_disk_state(disk,
1479 G_RAID_DISK_S_ACTIVE);
1480 g_raid_change_subdisk_state(sd,
1481 G_RAID_SUBDISK_S_ACTIVE);
1482 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
1483 G_RAID_EVENT_SUBDISK);
1484 }
1485
1486 /* Write metadata based on created entities. */
1487 G_RAID_DEBUG1(0, sc, "Array started.");
1488 g_raid_md_write_promise(md, vol, NULL, NULL);
1489
1490 /* Pickup any STALE/SPARE disks to refill array if needed. */
1491 g_raid_md_promise_refill(sc);
1492
1493 g_raid_event_send(vol, G_RAID_VOLUME_E_START,
1494 G_RAID_EVENT_VOLUME);
1495 return (0);
1496 }
1497 if (strcmp(verb, "add") == 0) {
1498
1499 gctl_error(req, "`add` command is not applicable, "
1500 "use `label` instead.");
1501 return (-99);
1502 }
1503 if (strcmp(verb, "delete") == 0) {
1504
1505 nodename = gctl_get_asciiparam(req, "arg0");
1506 if (nodename != NULL && strcasecmp(sc->sc_name, nodename) != 0)
1507 nodename = NULL;
1508
1509 /* Full node destruction. */
1510 if (*nargs == 1 && nodename != NULL) {
1511 /* Check if some volume is still open. */
1512 force = gctl_get_paraml(req, "force", sizeof(*force));
1513 if (force != NULL && *force == 0 &&
1514 g_raid_nopens(sc) != 0) {
1515 gctl_error(req, "Some volume is still open.");
1516 return (-4);
1517 }
1518
1519 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1520 if (disk->d_consumer)
1521 promise_meta_erase(disk->d_consumer);
1522 }
1523 g_raid_destroy_node(sc, 0);
1524 return (0);
1525 }
1526
1527 /* Destroy specified volume. If it was last - all node. */
1528 if (*nargs > 2) {
1529 gctl_error(req, "Invalid number of arguments.");
1530 return (-1);
1531 }
1532 volname = gctl_get_asciiparam(req,
1533 nodename != NULL ? "arg1" : "arg0");
1534 if (volname == NULL) {
1535 gctl_error(req, "No volume name.");
1536 return (-2);
1537 }
1538
1539 /* Search for volume. */
1540 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1541 if (strcmp(vol->v_name, volname) == 0)
1542 break;
1543 pp = vol->v_provider;
1544 if (pp == NULL)
1545 continue;
1546 if (strcmp(pp->name, volname) == 0)
1547 break;
1548 if (strncmp(pp->name, "raid/", 5) == 0 &&
1549 strcmp(pp->name + 5, volname) == 0)
1550 break;
1551 }
1552 if (vol == NULL) {
1553 i = strtol(volname, &tmp, 10);
1554 if (verb != volname && tmp[0] == 0) {
1555 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1556 if (vol->v_global_id == i)
1557 break;
1558 }
1559 }
1560 }
1561 if (vol == NULL) {
1562 gctl_error(req, "Volume '%s' not found.", volname);
1563 return (-3);
1564 }
1565
1566 /* Check if volume is still open. */
1567 force = gctl_get_paraml(req, "force", sizeof(*force));
1568 if (force != NULL && *force == 0 &&
1569 vol->v_provider_open != 0) {
1570 gctl_error(req, "Volume is still open.");
1571 return (-4);
1572 }
1573
1574 /* Destroy volume and potentially node. */
1575 i = 0;
1576 TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next)
1577 i++;
1578 if (i >= 2) {
1579 g_raid_destroy_volume(vol);
1580 g_raid_md_promise_purge_disks(sc);
1581 g_raid_md_write_promise(md, NULL, NULL, NULL);
1582 } else {
1583 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1584 if (disk->d_consumer)
1585 promise_meta_erase(disk->d_consumer);
1586 }
1587 g_raid_destroy_node(sc, 0);
1588 }
1589 return (0);
1590 }
1591 if (strcmp(verb, "remove") == 0 ||
1592 strcmp(verb, "fail") == 0) {
1593 if (*nargs < 2) {
1594 gctl_error(req, "Invalid number of arguments.");
1595 return (-1);
1596 }
1597 for (i = 1; i < *nargs; i++) {
1598 snprintf(arg, sizeof(arg), "arg%d", i);
1599 diskname = gctl_get_asciiparam(req, arg);
1600 if (diskname == NULL) {
1601 gctl_error(req, "No disk name (%s).", arg);
1602 error = -2;
1603 break;
1604 }
1605 if (strncmp(diskname, "/dev/", 5) == 0)
1606 diskname += 5;
1607
1608 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1609 if (disk->d_consumer != NULL &&
1610 disk->d_consumer->provider != NULL &&
1611 strcmp(disk->d_consumer->provider->name,
1612 diskname) == 0)
1613 break;
1614 }
1615 if (disk == NULL) {
1616 gctl_error(req, "Disk '%s' not found.",
1617 diskname);
1618 error = -3;
1619 break;
1620 }
1621
1622 if (strcmp(verb, "fail") == 0) {
1623 g_raid_md_fail_disk_promise(md, NULL, disk);
1624 continue;
1625 }
1626
1627 /* Erase metadata on deleting disk and destroy it. */
1628 promise_meta_erase(disk->d_consumer);
1629 g_raid_destroy_disk(disk);
1630 }
1631 g_raid_md_promise_purge_volumes(sc);
1632
1633 /* Write updated metadata to remaining disks. */
1634 g_raid_md_write_promise(md, NULL, NULL, NULL);
1635
1636 /* Check if anything left. */
1637 if (g_raid_ndisks(sc, -1) == 0)
1638 g_raid_destroy_node(sc, 0);
1639 else
1640 g_raid_md_promise_refill(sc);
1641 return (error);
1642 }
1643 if (strcmp(verb, "insert") == 0) {
1644 if (*nargs < 2) {
1645 gctl_error(req, "Invalid number of arguments.");
1646 return (-1);
1647 }
1648 for (i = 1; i < *nargs; i++) {
1649 /* Get disk name. */
1650 snprintf(arg, sizeof(arg), "arg%d", i);
1651 diskname = gctl_get_asciiparam(req, arg);
1652 if (diskname == NULL) {
1653 gctl_error(req, "No disk name (%s).", arg);
1654 error = -3;
1655 break;
1656 }
1657
1658 /* Try to find provider with specified name. */
1659 g_topology_lock();
1660 cp = g_raid_open_consumer(sc, diskname);
1661 if (cp == NULL) {
1662 gctl_error(req, "Can't open disk '%s'.",
1663 diskname);
1664 g_topology_unlock();
1665 error = -4;
1666 break;
1667 }
1668 pp = cp->provider;
1669 g_topology_unlock();
1670
1671 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO);
1672
1673 disk = g_raid_create_disk(sc);
1674 disk->d_consumer = cp;
1675 disk->d_md_data = (void *)pd;
1676 cp->private = disk;
1677
1678 g_raid_get_disk_info(disk);
1679
1680 /* Welcome the "new" disk. */
1681 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
1682 promise_meta_write_spare(cp);
1683 g_raid_md_promise_refill(sc);
1684 }
1685 return (error);
1686 }
1687 return (-100);
1688 }
1689
1690 static int
1691 g_raid_md_write_promise(struct g_raid_md_object *md, struct g_raid_volume *tvol,
1692 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
1693 {
1694 struct g_raid_softc *sc;
1695 struct g_raid_volume *vol;
1696 struct g_raid_subdisk *sd;
1697 struct g_raid_disk *disk;
1698 struct g_raid_md_promise_perdisk *pd;
1699 struct g_raid_md_promise_pervolume *pv;
1700 struct promise_raid_conf *meta;
1701 off_t rebuild_lba64;
1702 int i, j, pos, rebuild;
1703
1704 sc = md->mdo_softc;
1705
1706 if (sc->sc_stopping == G_RAID_DESTROY_HARD)
1707 return (0);
1708
1709 /* Generate new per-volume metadata for affected volumes. */
1710 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1711 if (vol->v_stopping)
1712 continue;
1713
1714 /* Skip volumes not related to specified targets. */
1715 if (tvol != NULL && vol != tvol)
1716 continue;
1717 if (tsd != NULL && vol != tsd->sd_volume)
1718 continue;
1719 if (tdisk != NULL) {
1720 for (i = 0; i < vol->v_disks_count; i++) {
1721 if (vol->v_subdisks[i].sd_disk == tdisk)
1722 break;
1723 }
1724 if (i >= vol->v_disks_count)
1725 continue;
1726 }
1727
1728 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data;
1729 pv->pv_generation++;
1730
1731 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO);
1732 if (pv->pv_meta != NULL)
1733 memcpy(meta, pv->pv_meta, sizeof(*meta));
1734 memcpy(meta->promise_id, PROMISE_MAGIC,
1735 sizeof(PROMISE_MAGIC) - 1);
1736 meta->dummy_0 = 0x00020000;
1737 meta->integrity = PROMISE_I_VALID;
1738
1739 meta->generation = pv->pv_generation;
1740 meta->status = PROMISE_S_VALID | PROMISE_S_ONLINE |
1741 PROMISE_S_INITED | PROMISE_S_READY;
1742 if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED)
1743 meta->status |= PROMISE_S_DEGRADED;
1744 if (vol->v_dirty)
1745 meta->status |= PROMISE_S_MARKED; /* XXX: INVENTED! */
1746 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0 ||
1747 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE)
1748 meta->type = PROMISE_T_RAID0;
1749 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 ||
1750 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
1751 meta->type = PROMISE_T_RAID1;
1752 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3)
1753 meta->type = PROMISE_T_RAID3;
1754 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5)
1755 meta->type = PROMISE_T_RAID5;
1756 else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT)
1757 meta->type = PROMISE_T_SPAN;
1758 else
1759 meta->type = PROMISE_T_JBOD;
1760 meta->total_disks = vol->v_disks_count;
1761 meta->stripe_shift = ffs(vol->v_strip_size / 1024);
1762 meta->array_width = vol->v_disks_count;
1763 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 ||
1764 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
1765 meta->array_width /= 2;
1766 meta->array_number = vol->v_global_id;
1767 meta->total_sectors = vol->v_mediasize / 512;
1768 meta->total_sectors_high = (vol->v_mediasize / 512) >> 32;
1769 meta->sector_size = vol->v_sectorsize / 512;
1770 meta->cylinders = meta->total_sectors / (255 * 63) - 1;
1771 meta->heads = 254;
1772 meta->sectors = 63;
1773 meta->volume_id = pv->pv_id;
1774 rebuild_lba64 = UINT64_MAX;
1775 rebuild = 0;
1776 for (i = 0; i < vol->v_disks_count; i++) {
1777 sd = &vol->v_subdisks[i];
1778 /* For RAID0+1 we need to translate order. */
1779 pos = promise_meta_translate_disk(vol, i);
1780 meta->disks[pos].flags = PROMISE_F_VALID |
1781 PROMISE_F_ASSIGNED;
1782 if (sd->sd_state == G_RAID_SUBDISK_S_NONE) {
1783 meta->disks[pos].flags |= 0;
1784 } else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED) {
1785 meta->disks[pos].flags |=
1786 PROMISE_F_DOWN | PROMISE_F_REDIR;
1787 } else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD) {
1788 meta->disks[pos].flags |=
1789 PROMISE_F_ONLINE | PROMISE_F_REDIR;
1790 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) {
1791 rebuild_lba64 = MIN(rebuild_lba64,
1792 sd->sd_rebuild_pos / 512);
1793 } else
1794 rebuild_lba64 = 0;
1795 rebuild = 1;
1796 } else {
1797 meta->disks[pos].flags |= PROMISE_F_ONLINE;
1798 if (sd->sd_state < G_RAID_SUBDISK_S_ACTIVE) {
1799 meta->status |= PROMISE_S_MARKED;
1800 if (sd->sd_state == G_RAID_SUBDISK_S_RESYNC) {
1801 rebuild_lba64 = MIN(rebuild_lba64,
1802 sd->sd_rebuild_pos / 512);
1803 } else
1804 rebuild_lba64 = 0;
1805 }
1806 }
1807 if (pv->pv_meta != NULL) {
1808 meta->disks[pos].id = pv->pv_meta->disks[pos].id;
1809 } else {
1810 meta->disks[pos].number = i * 2;
1811 arc4rand(&meta->disks[pos].id,
1812 sizeof(meta->disks[pos].id), 0);
1813 }
1814 }
1815 promise_meta_put_name(meta, vol->v_name);
1816
1817 /* Try to mimic AMD BIOS rebuild/resync behavior. */
1818 if (rebuild_lba64 != UINT64_MAX) {
1819 if (rebuild)
1820 meta->magic_3 = 0x03040010UL; /* Rebuild? */
1821 else
1822 meta->magic_3 = 0x03040008UL; /* Resync? */
1823 /* Translate from per-disk to per-volume LBA. */
1824 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 ||
1825 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) {
1826 rebuild_lba64 *= meta->array_width;
1827 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3 ||
1828 vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) {
1829 rebuild_lba64 *= meta->array_width - 1;
1830 } else
1831 rebuild_lba64 = 0;
1832 } else
1833 meta->magic_3 = 0x03000000UL;
1834 meta->rebuild_lba64 = rebuild_lba64;
1835 meta->magic_4 = 0x04010101UL;
1836
1837 /* Replace per-volume metadata with new. */
1838 if (pv->pv_meta != NULL)
1839 free(pv->pv_meta, M_MD_PROMISE);
1840 pv->pv_meta = meta;
1841
1842 /* Copy new metadata to the disks, adding or replacing old. */
1843 for (i = 0; i < vol->v_disks_count; i++) {
1844 sd = &vol->v_subdisks[i];
1845 disk = sd->sd_disk;
1846 if (disk == NULL)
1847 continue;
1848 /* For RAID0+1 we need to translate order. */
1849 pos = promise_meta_translate_disk(vol, i);
1850 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
1851 for (j = 0; j < pd->pd_subdisks; j++) {
1852 if (pd->pd_meta[j]->volume_id == meta->volume_id)
1853 break;
1854 }
1855 if (j == pd->pd_subdisks)
1856 pd->pd_subdisks++;
1857 if (pd->pd_meta[j] != NULL)
1858 free(pd->pd_meta[j], M_MD_PROMISE);
1859 pd->pd_meta[j] = promise_meta_copy(meta);
1860 pd->pd_meta[j]->disk = meta->disks[pos];
1861 pd->pd_meta[j]->disk.number = pos;
1862 pd->pd_meta[j]->disk_offset_high =
1863 (sd->sd_offset / 512) >> 32;
1864 pd->pd_meta[j]->disk_offset = sd->sd_offset / 512;
1865 pd->pd_meta[j]->disk_sectors_high =
1866 (sd->sd_size / 512) >> 32;
1867 pd->pd_meta[j]->disk_sectors = sd->sd_size / 512;
1868 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) {
1869 pd->pd_meta[j]->disk_rebuild_high =
1870 (sd->sd_rebuild_pos / 512) >> 32;
1871 pd->pd_meta[j]->disk_rebuild =
1872 sd->sd_rebuild_pos / 512;
1873 } else if (sd->sd_state < G_RAID_SUBDISK_S_REBUILD) {
1874 pd->pd_meta[j]->disk_rebuild_high = 0;
1875 pd->pd_meta[j]->disk_rebuild = 0;
1876 } else {
1877 pd->pd_meta[j]->disk_rebuild_high = UINT32_MAX;
1878 pd->pd_meta[j]->disk_rebuild = UINT32_MAX;
1879 }
1880 pd->pd_updated = 1;
1881 }
1882 }
1883
1884 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1885 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
1886 if (disk->d_state != G_RAID_DISK_S_ACTIVE)
1887 continue;
1888 if (!pd->pd_updated)
1889 continue;
1890 G_RAID_DEBUG(1, "Writing Promise metadata to %s",
1891 g_raid_get_diskname(disk));
1892 for (i = 0; i < pd->pd_subdisks; i++)
1893 g_raid_md_promise_print(pd->pd_meta[i]);
1894 promise_meta_write(disk->d_consumer,
1895 pd->pd_meta, pd->pd_subdisks);
1896 pd->pd_updated = 0;
1897 }
1898
1899 return (0);
1900 }
1901
1902 static int
1903 g_raid_md_fail_disk_promise(struct g_raid_md_object *md,
1904 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
1905 {
1906 struct g_raid_softc *sc;
1907 struct g_raid_md_promise_perdisk *pd;
1908 struct g_raid_subdisk *sd;
1909 int i, pos;
1910
1911 sc = md->mdo_softc;
1912 pd = (struct g_raid_md_promise_perdisk *)tdisk->d_md_data;
1913
1914 /* We can't fail disk that is not a part of array now. */
1915 if (tdisk->d_state != G_RAID_DISK_S_ACTIVE)
1916 return (-1);
1917
1918 /*
1919 * Mark disk as failed in metadata and try to write that metadata
1920 * to the disk itself to prevent it's later resurrection as STALE.
1921 */
1922 if (pd->pd_subdisks > 0 && tdisk->d_consumer != NULL)
1923 G_RAID_DEBUG(1, "Writing Promise metadata to %s",
1924 g_raid_get_diskname(tdisk));
1925 for (i = 0; i < pd->pd_subdisks; i++) {
1926 pd->pd_meta[i]->disk.flags |=
1927 PROMISE_F_DOWN | PROMISE_F_REDIR;
1928 pos = pd->pd_meta[i]->disk.number;
1929 if (pos >= 0 && pos < PROMISE_MAX_DISKS) {
1930 pd->pd_meta[i]->disks[pos].flags |=
1931 PROMISE_F_DOWN | PROMISE_F_REDIR;
1932 }
1933 g_raid_md_promise_print(pd->pd_meta[i]);
1934 }
1935 if (tdisk->d_consumer != NULL)
1936 promise_meta_write(tdisk->d_consumer,
1937 pd->pd_meta, pd->pd_subdisks);
1938
1939 /* Change states. */
1940 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
1941 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
1942 g_raid_change_subdisk_state(sd,
1943 G_RAID_SUBDISK_S_FAILED);
1944 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
1945 G_RAID_EVENT_SUBDISK);
1946 }
1947
1948 /* Write updated metadata to remaining disks. */
1949 g_raid_md_write_promise(md, NULL, NULL, tdisk);
1950
1951 g_raid_md_promise_refill(sc);
1952 return (0);
1953 }
1954
1955 static int
1956 g_raid_md_free_disk_promise(struct g_raid_md_object *md,
1957 struct g_raid_disk *disk)
1958 {
1959 struct g_raid_md_promise_perdisk *pd;
1960 int i;
1961
1962 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
1963 for (i = 0; i < pd->pd_subdisks; i++) {
1964 if (pd->pd_meta[i] != NULL) {
1965 free(pd->pd_meta[i], M_MD_PROMISE);
1966 pd->pd_meta[i] = NULL;
1967 }
1968 }
1969 free(pd, M_MD_PROMISE);
1970 disk->d_md_data = NULL;
1971 return (0);
1972 }
1973
1974 static int
1975 g_raid_md_free_volume_promise(struct g_raid_md_object *md,
1976 struct g_raid_volume *vol)
1977 {
1978 struct g_raid_md_promise_pervolume *pv;
1979
1980 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data;
1981 if (pv && pv->pv_meta != NULL) {
1982 free(pv->pv_meta, M_MD_PROMISE);
1983 pv->pv_meta = NULL;
1984 }
1985 if (pv && !pv->pv_started) {
1986 pv->pv_started = 1;
1987 callout_stop(&pv->pv_start_co);
1988 }
1989 free(pv, M_MD_PROMISE);
1990 vol->v_md_data = NULL;
1991 return (0);
1992 }
1993
1994 static int
1995 g_raid_md_free_promise(struct g_raid_md_object *md)
1996 {
1997
1998 return (0);
1999 }
2000
2001 G_RAID_MD_DECLARE(promise, "Promise");
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