1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org>
5 * Copyright (c) 2000 - 2008 Søren Schmidt <sos@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/param.h>
31 #include <sys/bio.h>
32 #include <sys/endian.h>
33 #include <sys/kernel.h>
34 #include <sys/kobj.h>
35 #include <sys/limits.h>
36 #include <sys/lock.h>
37 #include <sys/malloc.h>
38 #include <sys/mutex.h>
39 #include <sys/systm.h>
40 #include <geom/geom.h>
41 #include <geom/geom_dbg.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 static void
g_raid_md_promise_print(struct promise_raid_conf * meta)190 g_raid_md_promise_print(struct promise_raid_conf *meta)
191 {
192 int i;
193
194 if (g_raid_debug < 1)
195 return;
196
197 printf("********* ATA Promise Metadata *********\n");
198 printf("promise_id <%.24s>\n", meta->promise_id);
199 printf("disk %02x %02x %02x %02x %016jx\n",
200 meta->disk.flags, meta->disk.number, meta->disk.channel,
201 meta->disk.device, meta->disk.id);
202 printf("disk_offset %u\n", meta->disk_offset);
203 printf("disk_sectors %u\n", meta->disk_sectors);
204 printf("disk_rebuild %u\n", meta->disk_rebuild);
205 printf("generation %u\n", meta->generation);
206 printf("status 0x%02x\n", meta->status);
207 printf("type %u\n", meta->type);
208 printf("total_disks %u\n", meta->total_disks);
209 printf("stripe_shift %u\n", meta->stripe_shift);
210 printf("array_width %u\n", meta->array_width);
211 printf("array_number %u\n", meta->array_number);
212 printf("total_sectors %u\n", meta->total_sectors);
213 printf("cylinders %u\n", meta->cylinders);
214 printf("heads %u\n", meta->heads);
215 printf("sectors %u\n", meta->sectors);
216 printf("volume_id 0x%016jx\n", meta->volume_id);
217 printf("disks:\n");
218 for (i = 0; i < PROMISE_MAX_DISKS; i++ ) {
219 printf(" %02x %02x %02x %02x %016jx\n",
220 meta->disks[i].flags, meta->disks[i].number,
221 meta->disks[i].channel, meta->disks[i].device,
222 meta->disks[i].id);
223 }
224 printf("name <%.32s>\n", meta->name);
225 printf("magic_3 0x%08x\n", meta->magic_3);
226 printf("rebuild_lba64 %ju\n", meta->rebuild_lba64);
227 printf("magic_4 0x%08x\n", meta->magic_4);
228 printf("magic_5 0x%08x\n", meta->magic_5);
229 printf("total_sectors_high 0x%08x\n", meta->total_sectors_high);
230 printf("sector_size %u\n", meta->sector_size);
231 printf("backup_time %d\n", meta->backup_time);
232 printf("disk_offset_high 0x%08x\n", meta->disk_offset_high);
233 printf("disk_sectors_high 0x%08x\n", meta->disk_sectors_high);
234 printf("disk_rebuild_high 0x%08x\n", meta->disk_rebuild_high);
235 printf("=================================================\n");
236 }
237
238 static struct promise_raid_conf *
promise_meta_copy(struct promise_raid_conf * meta)239 promise_meta_copy(struct promise_raid_conf *meta)
240 {
241 struct promise_raid_conf *nmeta;
242
243 nmeta = malloc(sizeof(*nmeta), M_MD_PROMISE, M_WAITOK);
244 memcpy(nmeta, meta, sizeof(*nmeta));
245 return (nmeta);
246 }
247
248 static int
promise_meta_find_disk(struct promise_raid_conf * meta,uint64_t id)249 promise_meta_find_disk(struct promise_raid_conf *meta, uint64_t id)
250 {
251 int pos;
252
253 for (pos = 0; pos < meta->total_disks; pos++) {
254 if (meta->disks[pos].id == id)
255 return (pos);
256 }
257 return (-1);
258 }
259
260 static int
promise_meta_unused_range(struct promise_raid_conf ** metaarr,int nsd,off_t sectors,off_t * off,off_t * size)261 promise_meta_unused_range(struct promise_raid_conf **metaarr, int nsd,
262 off_t sectors, off_t *off, off_t *size)
263 {
264 off_t coff, csize, tmp;
265 int i, j;
266
267 sectors -= 131072;
268 *off = 0;
269 *size = 0;
270 coff = 0;
271 csize = sectors;
272 i = 0;
273 while (1) {
274 for (j = 0; j < nsd; j++) {
275 tmp = ((off_t)metaarr[j]->disk_offset_high << 32) +
276 metaarr[j]->disk_offset;
277 if (tmp >= coff)
278 csize = MIN(csize, tmp - coff);
279 }
280 if (csize > *size) {
281 *off = coff;
282 *size = csize;
283 }
284 if (i >= nsd)
285 break;
286 coff = ((off_t)metaarr[i]->disk_offset_high << 32) +
287 metaarr[i]->disk_offset +
288 ((off_t)metaarr[i]->disk_sectors_high << 32) +
289 metaarr[i]->disk_sectors;
290 csize = sectors - coff;
291 i++;
292 }
293 return ((*size > 0) ? 1 : 0);
294 }
295
296 static int
promise_meta_translate_disk(struct g_raid_volume * vol,int md_disk_pos)297 promise_meta_translate_disk(struct g_raid_volume *vol, int md_disk_pos)
298 {
299 int disk_pos, width;
300
301 if (md_disk_pos >= 0 && vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) {
302 width = vol->v_disks_count / 2;
303 disk_pos = (md_disk_pos / width) +
304 (md_disk_pos % width) * width;
305 } else
306 disk_pos = md_disk_pos;
307 return (disk_pos);
308 }
309
310 static void
promise_meta_get_name(struct promise_raid_conf * meta,char * buf)311 promise_meta_get_name(struct promise_raid_conf *meta, char *buf)
312 {
313 int i;
314
315 strncpy(buf, meta->name, 32);
316 buf[32] = 0;
317 for (i = 31; i >= 0; i--) {
318 if (buf[i] > 0x20)
319 break;
320 buf[i] = 0;
321 }
322 }
323
324 static void
promise_meta_put_name(struct promise_raid_conf * meta,char * buf)325 promise_meta_put_name(struct promise_raid_conf *meta, char *buf)
326 {
327
328 memset(meta->name, 0x20, 32);
329 memcpy(meta->name, buf, MIN(strlen(buf), 32));
330 }
331
332 static int
promise_meta_read(struct g_consumer * cp,struct promise_raid_conf ** metaarr)333 promise_meta_read(struct g_consumer *cp, struct promise_raid_conf **metaarr)
334 {
335 struct g_provider *pp;
336 struct promise_raid_conf *meta;
337 char *buf;
338 int error, i, subdisks;
339 uint32_t checksum, *ptr;
340
341 pp = cp->provider;
342 subdisks = 0;
343
344 if (pp->sectorsize * 4 < sizeof(*meta))
345 return (subdisks);
346 if (pp->sectorsize * 4 > maxphys) {
347 G_RAID_DEBUG(1, "%s: Blocksize is too big.", pp->name);
348 return (subdisks);
349 }
350 next:
351 /* Read metadata block. */
352 buf = g_read_data(cp, pp->mediasize - pp->sectorsize *
353 (63 - subdisks * PROMISE_META_OFFSET),
354 pp->sectorsize * 4, &error);
355 if (buf == NULL) {
356 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).",
357 pp->name, error);
358 return (subdisks);
359 }
360 meta = (struct promise_raid_conf *)buf;
361
362 /* Check if this is an Promise RAID struct */
363 if (strncmp(meta->promise_id, PROMISE_MAGIC, strlen(PROMISE_MAGIC)) &&
364 strncmp(meta->promise_id, FREEBSD_MAGIC, strlen(FREEBSD_MAGIC))) {
365 if (subdisks == 0)
366 G_RAID_DEBUG(1,
367 "Promise signature check failed on %s", pp->name);
368 g_free(buf);
369 return (subdisks);
370 }
371 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK);
372 memcpy(meta, buf, MIN(sizeof(*meta), pp->sectorsize * 4));
373 g_free(buf);
374
375 /* Check metadata checksum. */
376 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++)
377 checksum += *ptr++;
378 if (checksum != meta->checksum) {
379 G_RAID_DEBUG(1, "Promise checksum check failed on %s", pp->name);
380 free(meta, M_MD_PROMISE);
381 return (subdisks);
382 }
383
384 if ((meta->integrity & PROMISE_I_VALID) == 0) {
385 G_RAID_DEBUG(1, "Promise metadata is invalid on %s", pp->name);
386 free(meta, M_MD_PROMISE);
387 return (subdisks);
388 }
389
390 if (meta->total_disks > PROMISE_MAX_DISKS) {
391 G_RAID_DEBUG(1, "Wrong number of disks on %s (%d)",
392 pp->name, meta->total_disks);
393 free(meta, M_MD_PROMISE);
394 return (subdisks);
395 }
396
397 /* Remove filler garbage from fields used in newer metadata. */
398 if (meta->disk_offset_high == 0x8b8c8d8e &&
399 meta->disk_sectors_high == 0x8788898a &&
400 meta->disk_rebuild_high == 0x83848586) {
401 meta->disk_offset_high = 0;
402 meta->disk_sectors_high = 0;
403 if (meta->disk_rebuild == UINT32_MAX)
404 meta->disk_rebuild_high = UINT32_MAX;
405 else
406 meta->disk_rebuild_high = 0;
407 if (meta->total_sectors_high == 0x15161718) {
408 meta->total_sectors_high = 0;
409 meta->backup_time = 0;
410 if (meta->rebuild_lba64 == 0x2122232425262728)
411 meta->rebuild_lba64 = UINT64_MAX;
412 }
413 }
414 if (meta->sector_size < 1 || meta->sector_size > 8)
415 meta->sector_size = 1;
416
417 /* Save this part and look for next. */
418 *metaarr = meta;
419 metaarr++;
420 subdisks++;
421 if (subdisks < PROMISE_MAX_SUBDISKS)
422 goto next;
423
424 return (subdisks);
425 }
426
427 static int
promise_meta_write(struct g_consumer * cp,struct promise_raid_conf ** metaarr,int nsd)428 promise_meta_write(struct g_consumer *cp,
429 struct promise_raid_conf **metaarr, int nsd)
430 {
431 struct g_provider *pp;
432 struct promise_raid_conf *meta;
433 char *buf;
434 off_t off, size;
435 int error, i, subdisk, fake;
436 uint32_t checksum, *ptr;
437
438 pp = cp->provider;
439 subdisk = 0;
440 fake = 0;
441 next:
442 buf = malloc(pp->sectorsize * 4, M_MD_PROMISE, M_WAITOK | M_ZERO);
443 meta = NULL;
444 if (subdisk < nsd) {
445 meta = metaarr[subdisk];
446 } else if (!fake && promise_meta_unused_range(metaarr, nsd,
447 cp->provider->mediasize / cp->provider->sectorsize,
448 &off, &size)) {
449 /* Optionally add record for unused space. */
450 meta = (struct promise_raid_conf *)buf;
451 memcpy(&meta->promise_id[0], PROMISE_MAGIC,
452 sizeof(PROMISE_MAGIC) - 1);
453 meta->dummy_0 = 0x00020000;
454 meta->integrity = PROMISE_I_VALID;
455 meta->disk.flags = PROMISE_F_ONLINE | PROMISE_F_VALID;
456 meta->disk.number = 0xff;
457 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0);
458 meta->disk_offset_high = off >> 32;
459 meta->disk_offset = (uint32_t)off;
460 meta->disk_sectors_high = size >> 32;
461 meta->disk_sectors = (uint32_t)size;
462 meta->disk_rebuild_high = UINT32_MAX;
463 meta->disk_rebuild = UINT32_MAX;
464 fake = 1;
465 }
466 if (meta != NULL) {
467 /* Recalculate checksum for case if metadata were changed. */
468 meta->checksum = 0;
469 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++)
470 checksum += *ptr++;
471 meta->checksum = checksum;
472 memcpy(buf, meta, MIN(pp->sectorsize * 4, sizeof(*meta)));
473 }
474 error = g_write_data(cp, pp->mediasize - pp->sectorsize *
475 (63 - subdisk * PROMISE_META_OFFSET),
476 buf, pp->sectorsize * 4);
477 if (error != 0) {
478 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
479 pp->name, error);
480 }
481 free(buf, M_MD_PROMISE);
482
483 subdisk++;
484 if (subdisk < PROMISE_MAX_SUBDISKS)
485 goto next;
486
487 return (error);
488 }
489
490 static int
promise_meta_erase(struct g_consumer * cp)491 promise_meta_erase(struct g_consumer *cp)
492 {
493 struct g_provider *pp;
494 char *buf;
495 int error, subdisk;
496
497 pp = cp->provider;
498 buf = malloc(4 * pp->sectorsize, M_MD_PROMISE, M_WAITOK | M_ZERO);
499 for (subdisk = 0; subdisk < PROMISE_MAX_SUBDISKS; subdisk++) {
500 error = g_write_data(cp, pp->mediasize - pp->sectorsize *
501 (63 - subdisk * PROMISE_META_OFFSET),
502 buf, 4 * pp->sectorsize);
503 if (error != 0) {
504 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
505 pp->name, error);
506 }
507 }
508 free(buf, M_MD_PROMISE);
509 return (error);
510 }
511
512 static int
promise_meta_write_spare(struct g_consumer * cp)513 promise_meta_write_spare(struct g_consumer *cp)
514 {
515 struct promise_raid_conf *meta;
516 off_t tmp;
517 int error;
518
519 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO);
520 memcpy(&meta->promise_id[0], PROMISE_MAGIC, sizeof(PROMISE_MAGIC) - 1);
521 meta->dummy_0 = 0x00020000;
522 meta->integrity = PROMISE_I_VALID;
523 meta->disk.flags = PROMISE_F_SPARE | PROMISE_F_ONLINE | PROMISE_F_VALID;
524 meta->disk.number = 0xff;
525 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0);
526 tmp = cp->provider->mediasize / cp->provider->sectorsize - 131072;
527 meta->disk_sectors_high = tmp >> 32;
528 meta->disk_sectors = (uint32_t)tmp;
529 meta->disk_rebuild_high = UINT32_MAX;
530 meta->disk_rebuild = UINT32_MAX;
531 error = promise_meta_write(cp, &meta, 1);
532 free(meta, M_MD_PROMISE);
533 return (error);
534 }
535
536 static struct g_raid_volume *
g_raid_md_promise_get_volume(struct g_raid_softc * sc,uint64_t id)537 g_raid_md_promise_get_volume(struct g_raid_softc *sc, uint64_t id)
538 {
539 struct g_raid_volume *vol;
540 struct g_raid_md_promise_pervolume *pv;
541
542 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
543 pv = vol->v_md_data;
544 if (pv->pv_id == id)
545 break;
546 }
547 return (vol);
548 }
549
550 static int
g_raid_md_promise_purge_volumes(struct g_raid_softc * sc)551 g_raid_md_promise_purge_volumes(struct g_raid_softc *sc)
552 {
553 struct g_raid_volume *vol, *tvol;
554 struct g_raid_md_promise_pervolume *pv;
555 int i, res;
556
557 res = 0;
558 TAILQ_FOREACH_SAFE(vol, &sc->sc_volumes, v_next, tvol) {
559 pv = vol->v_md_data;
560 if (!pv->pv_started || vol->v_stopping)
561 continue;
562 for (i = 0; i < vol->v_disks_count; i++) {
563 if (vol->v_subdisks[i].sd_state != G_RAID_SUBDISK_S_NONE)
564 break;
565 }
566 if (i >= vol->v_disks_count) {
567 g_raid_destroy_volume(vol);
568 res = 1;
569 }
570 }
571 return (res);
572 }
573
574 static int
g_raid_md_promise_purge_disks(struct g_raid_softc * sc)575 g_raid_md_promise_purge_disks(struct g_raid_softc *sc)
576 {
577 struct g_raid_disk *disk, *tdisk;
578 struct g_raid_volume *vol;
579 struct g_raid_md_promise_perdisk *pd;
580 int i, j, res;
581
582 res = 0;
583 TAILQ_FOREACH_SAFE(disk, &sc->sc_disks, d_next, tdisk) {
584 if (disk->d_state == G_RAID_DISK_S_SPARE)
585 continue;
586 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
587
588 /* Scan for deleted volumes. */
589 for (i = 0; i < pd->pd_subdisks; ) {
590 vol = g_raid_md_promise_get_volume(sc,
591 pd->pd_meta[i]->volume_id);
592 if (vol != NULL && !vol->v_stopping) {
593 i++;
594 continue;
595 }
596 free(pd->pd_meta[i], M_MD_PROMISE);
597 for (j = i; j < pd->pd_subdisks - 1; j++)
598 pd->pd_meta[j] = pd->pd_meta[j + 1];
599 pd->pd_meta[pd->pd_subdisks - 1] = NULL;
600 pd->pd_subdisks--;
601 pd->pd_updated = 1;
602 }
603
604 /* If there is no metadata left - erase and delete disk. */
605 if (pd->pd_subdisks == 0) {
606 promise_meta_erase(disk->d_consumer);
607 g_raid_destroy_disk(disk);
608 res = 1;
609 }
610 }
611 return (res);
612 }
613
614 static int
g_raid_md_promise_supported(int level,int qual,int disks,int force)615 g_raid_md_promise_supported(int level, int qual, int disks, int force)
616 {
617
618 if (disks > PROMISE_MAX_DISKS)
619 return (0);
620 switch (level) {
621 case G_RAID_VOLUME_RL_RAID0:
622 if (disks < 1)
623 return (0);
624 if (!force && disks < 2)
625 return (0);
626 break;
627 case G_RAID_VOLUME_RL_RAID1:
628 if (disks < 1)
629 return (0);
630 if (!force && (disks != 2))
631 return (0);
632 break;
633 case G_RAID_VOLUME_RL_RAID1E:
634 if (disks < 2)
635 return (0);
636 if (disks % 2 != 0)
637 return (0);
638 if (!force && (disks != 4))
639 return (0);
640 break;
641 case G_RAID_VOLUME_RL_SINGLE:
642 if (disks != 1)
643 return (0);
644 break;
645 case G_RAID_VOLUME_RL_CONCAT:
646 if (disks < 2)
647 return (0);
648 break;
649 case G_RAID_VOLUME_RL_RAID5:
650 if (disks < 3)
651 return (0);
652 if (qual != G_RAID_VOLUME_RLQ_R5LA)
653 return (0);
654 break;
655 default:
656 return (0);
657 }
658 if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE)
659 return (0);
660 return (1);
661 }
662
663 static int
g_raid_md_promise_start_disk(struct g_raid_disk * disk,int sdn,struct g_raid_volume * vol)664 g_raid_md_promise_start_disk(struct g_raid_disk *disk, int sdn,
665 struct g_raid_volume *vol)
666 {
667 struct g_raid_softc *sc;
668 struct g_raid_subdisk *sd;
669 struct g_raid_md_promise_perdisk *pd;
670 struct g_raid_md_promise_pervolume *pv;
671 struct promise_raid_conf *meta;
672 off_t eoff, esize, size;
673 int disk_pos, md_disk_pos, i, resurrection = 0;
674
675 sc = disk->d_softc;
676 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
677
678 pv = vol->v_md_data;
679 meta = pv->pv_meta;
680
681 if (sdn >= 0) {
682 /* Find disk position in metadata by its serial. */
683 md_disk_pos = promise_meta_find_disk(meta, pd->pd_meta[sdn]->disk.id);
684 /* For RAID0+1 we need to translate order. */
685 disk_pos = promise_meta_translate_disk(vol, md_disk_pos);
686 } else {
687 md_disk_pos = -1;
688 disk_pos = -1;
689 }
690 if (disk_pos < 0) {
691 G_RAID_DEBUG1(1, sc, "Disk %s is not part of the volume %s",
692 g_raid_get_diskname(disk), vol->v_name);
693 /* Failed stale disk is useless for us. */
694 if (sdn >= 0 &&
695 pd->pd_meta[sdn]->disk.flags & PROMISE_F_DOWN) {
696 g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED);
697 return (0);
698 }
699 /* If we were given specific metadata subdisk - erase it. */
700 if (sdn >= 0) {
701 free(pd->pd_meta[sdn], M_MD_PROMISE);
702 for (i = sdn; i < pd->pd_subdisks - 1; i++)
703 pd->pd_meta[i] = pd->pd_meta[i + 1];
704 pd->pd_meta[pd->pd_subdisks - 1] = NULL;
705 pd->pd_subdisks--;
706 }
707 /* If we are in the start process, that's all for now. */
708 if (!pv->pv_started)
709 goto nofit;
710 /*
711 * If we have already started - try to get use of the disk.
712 * Try to replace OFFLINE disks first, then FAILED.
713 */
714 promise_meta_unused_range(pd->pd_meta, pd->pd_subdisks,
715 disk->d_consumer->provider->mediasize /
716 disk->d_consumer->provider->sectorsize,
717 &eoff, &esize);
718 if (esize == 0) {
719 G_RAID_DEBUG1(1, sc, "No free space on disk %s",
720 g_raid_get_diskname(disk));
721 goto nofit;
722 }
723 size = INT64_MAX;
724 for (i = 0; i < vol->v_disks_count; i++) {
725 sd = &vol->v_subdisks[i];
726 if (sd->sd_state != G_RAID_SUBDISK_S_NONE)
727 size = sd->sd_size;
728 if (sd->sd_state <= G_RAID_SUBDISK_S_FAILED &&
729 (disk_pos < 0 ||
730 vol->v_subdisks[i].sd_state < sd->sd_state))
731 disk_pos = i;
732 }
733 if (disk_pos >= 0 &&
734 vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT &&
735 (off_t)esize * 512 < size) {
736 G_RAID_DEBUG1(1, sc, "Disk %s free space "
737 "is too small (%ju < %ju)",
738 g_raid_get_diskname(disk),
739 (off_t)esize * 512, size);
740 disk_pos = -1;
741 }
742 if (disk_pos >= 0) {
743 if (vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT)
744 esize = size / 512;
745 /* For RAID0+1 we need to translate order. */
746 md_disk_pos = promise_meta_translate_disk(vol, disk_pos);
747 } else {
748 nofit:
749 if (pd->pd_subdisks == 0) {
750 g_raid_change_disk_state(disk,
751 G_RAID_DISK_S_SPARE);
752 }
753 return (0);
754 }
755 G_RAID_DEBUG1(1, sc, "Disk %s takes pos %d in the volume %s",
756 g_raid_get_diskname(disk), disk_pos, vol->v_name);
757 resurrection = 1;
758 }
759
760 sd = &vol->v_subdisks[disk_pos];
761
762 if (resurrection && sd->sd_disk != NULL) {
763 g_raid_change_disk_state(sd->sd_disk,
764 G_RAID_DISK_S_STALE_FAILED);
765 TAILQ_REMOVE(&sd->sd_disk->d_subdisks,
766 sd, sd_next);
767 }
768 vol->v_subdisks[disk_pos].sd_disk = disk;
769 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
770
771 /* Welcome the new disk. */
772 if (resurrection)
773 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
774 else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN)
775 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
776 else
777 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
778
779 if (resurrection) {
780 sd->sd_offset = (off_t)eoff * 512;
781 sd->sd_size = (off_t)esize * 512;
782 } else {
783 sd->sd_offset = (((off_t)pd->pd_meta[sdn]->disk_offset_high
784 << 32) + pd->pd_meta[sdn]->disk_offset) * 512;
785 sd->sd_size = (((off_t)pd->pd_meta[sdn]->disk_sectors_high
786 << 32) + pd->pd_meta[sdn]->disk_sectors) * 512;
787 }
788
789 if (resurrection) {
790 /* Stale disk, almost same as new. */
791 g_raid_change_subdisk_state(sd,
792 G_RAID_SUBDISK_S_NEW);
793 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN) {
794 /* Failed disk. */
795 g_raid_change_subdisk_state(sd,
796 G_RAID_SUBDISK_S_FAILED);
797 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_REDIR) {
798 /* Rebuilding disk. */
799 g_raid_change_subdisk_state(sd,
800 G_RAID_SUBDISK_S_REBUILD);
801 if (pd->pd_meta[sdn]->generation != meta->generation)
802 sd->sd_rebuild_pos = 0;
803 else {
804 sd->sd_rebuild_pos =
805 (((off_t)pd->pd_meta[sdn]->disk_rebuild_high << 32) +
806 pd->pd_meta[sdn]->disk_rebuild) * 512;
807 }
808 } else if (!(meta->disks[md_disk_pos].flags & PROMISE_F_ONLINE)) {
809 /* Rebuilding disk. */
810 g_raid_change_subdisk_state(sd,
811 G_RAID_SUBDISK_S_NEW);
812 } else if (pd->pd_meta[sdn]->generation != meta->generation ||
813 (meta->status & PROMISE_S_MARKED)) {
814 /* Stale disk or dirty volume (unclean shutdown). */
815 g_raid_change_subdisk_state(sd,
816 G_RAID_SUBDISK_S_STALE);
817 } else {
818 /* Up to date disk. */
819 g_raid_change_subdisk_state(sd,
820 G_RAID_SUBDISK_S_ACTIVE);
821 }
822 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
823 G_RAID_EVENT_SUBDISK);
824
825 return (resurrection);
826 }
827
828 static void
g_raid_md_promise_refill(struct g_raid_softc * sc)829 g_raid_md_promise_refill(struct g_raid_softc *sc)
830 {
831 struct g_raid_volume *vol;
832 struct g_raid_subdisk *sd;
833 struct g_raid_disk *disk;
834 struct g_raid_md_object *md;
835 struct g_raid_md_promise_perdisk *pd;
836 struct g_raid_md_promise_pervolume *pv;
837 int update, updated, i, bad;
838
839 md = sc->sc_md;
840 restart:
841 updated = 0;
842 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
843 pv = vol->v_md_data;
844 if (!pv->pv_started || vol->v_stopping)
845 continue;
846
847 /* Search for subdisk that needs replacement. */
848 bad = 0;
849 for (i = 0; i < vol->v_disks_count; i++) {
850 sd = &vol->v_subdisks[i];
851 if (sd->sd_state == G_RAID_SUBDISK_S_NONE ||
852 sd->sd_state == G_RAID_SUBDISK_S_FAILED)
853 bad = 1;
854 }
855 if (!bad)
856 continue;
857
858 G_RAID_DEBUG1(1, sc, "Volume %s is not complete, "
859 "trying to refill.", vol->v_name);
860
861 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
862 /* Skip failed. */
863 if (disk->d_state < G_RAID_DISK_S_SPARE)
864 continue;
865 /* Skip already used by this volume. */
866 for (i = 0; i < vol->v_disks_count; i++) {
867 sd = &vol->v_subdisks[i];
868 if (sd->sd_disk == disk)
869 break;
870 }
871 if (i < vol->v_disks_count)
872 continue;
873
874 /* Try to use disk if it has empty extents. */
875 pd = disk->d_md_data;
876 if (pd->pd_subdisks < PROMISE_MAX_SUBDISKS) {
877 update =
878 g_raid_md_promise_start_disk(disk, -1, vol);
879 } else
880 update = 0;
881 if (update) {
882 updated = 1;
883 g_raid_md_write_promise(md, vol, NULL, disk);
884 break;
885 }
886 }
887 }
888 if (updated)
889 goto restart;
890 }
891
892 static void
g_raid_md_promise_start(struct g_raid_volume * vol)893 g_raid_md_promise_start(struct g_raid_volume *vol)
894 {
895 struct g_raid_softc *sc;
896 struct g_raid_subdisk *sd;
897 struct g_raid_disk *disk;
898 struct g_raid_md_object *md;
899 struct g_raid_md_promise_perdisk *pd;
900 struct g_raid_md_promise_pervolume *pv;
901 struct promise_raid_conf *meta;
902 u_int i;
903
904 sc = vol->v_softc;
905 md = sc->sc_md;
906 pv = vol->v_md_data;
907 meta = pv->pv_meta;
908
909 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE;
910 if (meta->type == PROMISE_T_RAID0)
911 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0;
912 else if (meta->type == PROMISE_T_RAID1) {
913 if (meta->array_width == 1)
914 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1;
915 else
916 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
917 } else if (meta->type == PROMISE_T_RAID3)
918 vol->v_raid_level = G_RAID_VOLUME_RL_RAID3;
919 else if (meta->type == PROMISE_T_RAID5) {
920 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5;
921 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LA;
922 } else if (meta->type == PROMISE_T_SPAN)
923 vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT;
924 else if (meta->type == PROMISE_T_JBOD)
925 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE;
926 else
927 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN;
928 vol->v_strip_size = 512 << meta->stripe_shift; //ZZZ
929 vol->v_disks_count = meta->total_disks;
930 vol->v_mediasize = (off_t)meta->total_sectors * 512; //ZZZ
931 if (meta->total_sectors_high < 256) /* If value looks sane. */
932 vol->v_mediasize +=
933 ((off_t)meta->total_sectors_high << 32) * 512; //ZZZ
934 vol->v_sectorsize = 512 * meta->sector_size;
935 for (i = 0; i < vol->v_disks_count; i++) {
936 sd = &vol->v_subdisks[i];
937 sd->sd_offset = (((off_t)meta->disk_offset_high << 32) +
938 meta->disk_offset) * 512;
939 sd->sd_size = (((off_t)meta->disk_sectors_high << 32) +
940 meta->disk_sectors) * 512;
941 }
942 g_raid_start_volume(vol);
943
944 /* Make all disks found till the moment take their places. */
945 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
946 pd = disk->d_md_data;
947 for (i = 0; i < pd->pd_subdisks; i++) {
948 if (pd->pd_meta[i]->volume_id == meta->volume_id)
949 g_raid_md_promise_start_disk(disk, i, vol);
950 }
951 }
952
953 pv->pv_started = 1;
954 callout_stop(&pv->pv_start_co);
955 G_RAID_DEBUG1(0, sc, "Volume started.");
956 g_raid_md_write_promise(md, vol, NULL, NULL);
957
958 /* Pickup any STALE/SPARE disks to refill array if needed. */
959 g_raid_md_promise_refill(sc);
960
961 g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME);
962 }
963
964 static void
g_raid_promise_go(void * arg)965 g_raid_promise_go(void *arg)
966 {
967 struct g_raid_volume *vol;
968 struct g_raid_softc *sc;
969 struct g_raid_md_promise_pervolume *pv;
970
971 vol = arg;
972 pv = vol->v_md_data;
973 sc = vol->v_softc;
974 if (!pv->pv_started) {
975 G_RAID_DEBUG1(0, sc, "Force volume start due to timeout.");
976 g_raid_event_send(vol, G_RAID_VOLUME_E_STARTMD,
977 G_RAID_EVENT_VOLUME);
978 }
979 }
980
981 static void
g_raid_md_promise_new_disk(struct g_raid_disk * disk)982 g_raid_md_promise_new_disk(struct g_raid_disk *disk)
983 {
984 struct g_raid_softc *sc;
985 struct g_raid_md_object *md;
986 struct promise_raid_conf *pdmeta;
987 struct g_raid_md_promise_perdisk *pd;
988 struct g_raid_md_promise_pervolume *pv;
989 struct g_raid_volume *vol;
990 int i;
991 char buf[33];
992
993 sc = disk->d_softc;
994 md = sc->sc_md;
995 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
996
997 if (pd->pd_subdisks == 0) {
998 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
999 g_raid_md_promise_refill(sc);
1000 return;
1001 }
1002
1003 for (i = 0; i < pd->pd_subdisks; i++) {
1004 pdmeta = pd->pd_meta[i];
1005
1006 /* Look for volume with matching ID. */
1007 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id);
1008 if (vol == NULL) {
1009 promise_meta_get_name(pdmeta, buf);
1010 vol = g_raid_create_volume(sc, buf, pdmeta->array_number);
1011 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO);
1012 pv->pv_id = pdmeta->volume_id;
1013 vol->v_md_data = pv;
1014 callout_init(&pv->pv_start_co, 1);
1015 callout_reset(&pv->pv_start_co,
1016 g_raid_start_timeout * hz,
1017 g_raid_promise_go, vol);
1018 } else
1019 pv = vol->v_md_data;
1020
1021 /* If we haven't started yet - check metadata freshness. */
1022 if (pv->pv_meta == NULL || !pv->pv_started) {
1023 if (pv->pv_meta == NULL ||
1024 ((int16_t)(pdmeta->generation - pv->pv_generation)) > 0) {
1025 G_RAID_DEBUG1(1, sc, "Newer disk");
1026 if (pv->pv_meta != NULL)
1027 free(pv->pv_meta, M_MD_PROMISE);
1028 pv->pv_meta = promise_meta_copy(pdmeta);
1029 pv->pv_generation = pv->pv_meta->generation;
1030 pv->pv_disks_present = 1;
1031 } else if (pdmeta->generation == pv->pv_generation) {
1032 pv->pv_disks_present++;
1033 G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)",
1034 pv->pv_disks_present,
1035 pv->pv_meta->total_disks);
1036 } else {
1037 G_RAID_DEBUG1(1, sc, "Older disk");
1038 }
1039 }
1040 }
1041
1042 for (i = 0; i < pd->pd_subdisks; i++) {
1043 pdmeta = pd->pd_meta[i];
1044
1045 /* Look for volume with matching ID. */
1046 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id);
1047 if (vol == NULL)
1048 continue;
1049 pv = vol->v_md_data;
1050
1051 if (pv->pv_started) {
1052 if (g_raid_md_promise_start_disk(disk, i, vol))
1053 g_raid_md_write_promise(md, vol, NULL, NULL);
1054 } else {
1055 /* If we collected all needed disks - start array. */
1056 if (pv->pv_disks_present == pv->pv_meta->total_disks)
1057 g_raid_md_promise_start(vol);
1058 }
1059 }
1060 }
1061
1062 static int
g_raid_md_create_promise(struct g_raid_md_object * md,struct g_class * mp,struct g_geom ** gp)1063 g_raid_md_create_promise(struct g_raid_md_object *md, struct g_class *mp,
1064 struct g_geom **gp)
1065 {
1066 struct g_geom *geom;
1067 struct g_raid_softc *sc;
1068
1069 /* Search for existing node. */
1070 LIST_FOREACH(geom, &mp->geom, geom) {
1071 sc = geom->softc;
1072 if (sc == NULL)
1073 continue;
1074 if (sc->sc_stopping != 0)
1075 continue;
1076 if (sc->sc_md->mdo_class != md->mdo_class)
1077 continue;
1078 break;
1079 }
1080 if (geom != NULL) {
1081 *gp = geom;
1082 return (G_RAID_MD_TASTE_EXISTING);
1083 }
1084
1085 /* Create new one if not found. */
1086 sc = g_raid_create_node(mp, "Promise", md);
1087 if (sc == NULL)
1088 return (G_RAID_MD_TASTE_FAIL);
1089 md->mdo_softc = sc;
1090 *gp = sc->sc_geom;
1091 return (G_RAID_MD_TASTE_NEW);
1092 }
1093
1094 static int
g_raid_md_taste_promise(struct g_raid_md_object * md,struct g_class * mp,struct g_consumer * cp,struct g_geom ** gp)1095 g_raid_md_taste_promise(struct g_raid_md_object *md, struct g_class *mp,
1096 struct g_consumer *cp, struct g_geom **gp)
1097 {
1098 struct g_consumer *rcp;
1099 struct g_provider *pp;
1100 struct g_raid_softc *sc;
1101 struct g_raid_disk *disk;
1102 struct promise_raid_conf *metaarr[4];
1103 struct g_raid_md_promise_perdisk *pd;
1104 struct g_geom *geom;
1105 int i, j, result, len, subdisks;
1106 char name[16];
1107 uint16_t vendor;
1108
1109 G_RAID_DEBUG(1, "Tasting Promise on %s", cp->provider->name);
1110 pp = cp->provider;
1111
1112 /* Read metadata from device. */
1113 g_topology_unlock();
1114 vendor = 0xffff;
1115 len = sizeof(vendor);
1116 if (pp->geom->rank == 1)
1117 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor);
1118 subdisks = promise_meta_read(cp, metaarr);
1119 g_topology_lock();
1120 if (subdisks == 0) {
1121 if (g_raid_aggressive_spare) {
1122 if (vendor == 0x105a || vendor == 0x1002) {
1123 G_RAID_DEBUG(1,
1124 "No Promise metadata, forcing spare.");
1125 goto search;
1126 } else {
1127 G_RAID_DEBUG(1,
1128 "Promise/ATI vendor mismatch "
1129 "0x%04x != 0x105a/0x1002",
1130 vendor);
1131 }
1132 }
1133 return (G_RAID_MD_TASTE_FAIL);
1134 }
1135
1136 /* Metadata valid. Print it. */
1137 for (i = 0; i < subdisks; i++)
1138 g_raid_md_promise_print(metaarr[i]);
1139
1140 /* Purge meaningless (empty/spare) records. */
1141 for (i = 0; i < subdisks; ) {
1142 if (metaarr[i]->disk.flags & PROMISE_F_ASSIGNED) {
1143 i++;
1144 continue;
1145 }
1146 free(metaarr[i], M_MD_PROMISE);
1147 for (j = i; j < subdisks - 1; j++)
1148 metaarr[i] = metaarr[j + 1];
1149 metaarr[subdisks - 1] = NULL;
1150 subdisks--;
1151 }
1152
1153 search:
1154 /* Search for matching node. */
1155 sc = NULL;
1156 LIST_FOREACH(geom, &mp->geom, geom) {
1157 sc = geom->softc;
1158 if (sc == NULL)
1159 continue;
1160 if (sc->sc_stopping != 0)
1161 continue;
1162 if (sc->sc_md->mdo_class != md->mdo_class)
1163 continue;
1164 break;
1165 }
1166
1167 /* Found matching node. */
1168 if (geom != NULL) {
1169 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
1170 result = G_RAID_MD_TASTE_EXISTING;
1171
1172 } else { /* Not found matching node -- create one. */
1173 result = G_RAID_MD_TASTE_NEW;
1174 snprintf(name, sizeof(name), "Promise");
1175 sc = g_raid_create_node(mp, name, md);
1176 md->mdo_softc = sc;
1177 geom = sc->sc_geom;
1178 }
1179
1180 /* There is no return after this point, so we close passed consumer. */
1181 g_access(cp, -1, 0, 0);
1182
1183 rcp = g_new_consumer(geom);
1184 rcp->flags |= G_CF_DIRECT_RECEIVE;
1185 g_attach(rcp, pp);
1186 if (g_access(rcp, 1, 1, 1) != 0)
1187 ; //goto fail1;
1188
1189 g_topology_unlock();
1190 sx_xlock(&sc->sc_lock);
1191
1192 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO);
1193 pd->pd_subdisks = subdisks;
1194 for (i = 0; i < subdisks; i++)
1195 pd->pd_meta[i] = metaarr[i];
1196 disk = g_raid_create_disk(sc);
1197 disk->d_md_data = (void *)pd;
1198 disk->d_consumer = rcp;
1199 rcp->private = disk;
1200
1201 g_raid_get_disk_info(disk);
1202
1203 g_raid_md_promise_new_disk(disk);
1204
1205 sx_xunlock(&sc->sc_lock);
1206 g_topology_lock();
1207 *gp = geom;
1208 return (result);
1209 }
1210
1211 static int
g_raid_md_event_promise(struct g_raid_md_object * md,struct g_raid_disk * disk,u_int event)1212 g_raid_md_event_promise(struct g_raid_md_object *md,
1213 struct g_raid_disk *disk, u_int event)
1214 {
1215 struct g_raid_softc *sc;
1216
1217 sc = md->mdo_softc;
1218 if (disk == NULL)
1219 return (-1);
1220 switch (event) {
1221 case G_RAID_DISK_E_DISCONNECTED:
1222 /* Delete disk. */
1223 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
1224 g_raid_destroy_disk(disk);
1225 g_raid_md_promise_purge_volumes(sc);
1226
1227 /* Write updated metadata to all disks. */
1228 g_raid_md_write_promise(md, NULL, NULL, NULL);
1229
1230 /* Check if anything left. */
1231 if (g_raid_ndisks(sc, -1) == 0)
1232 g_raid_destroy_node(sc, 0);
1233 else
1234 g_raid_md_promise_refill(sc);
1235 return (0);
1236 }
1237 return (-2);
1238 }
1239
1240 static int
g_raid_md_volume_event_promise(struct g_raid_md_object * md,struct g_raid_volume * vol,u_int event)1241 g_raid_md_volume_event_promise(struct g_raid_md_object *md,
1242 struct g_raid_volume *vol, u_int event)
1243 {
1244 struct g_raid_md_promise_pervolume *pv;
1245
1246 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data;
1247 switch (event) {
1248 case G_RAID_VOLUME_E_STARTMD:
1249 if (!pv->pv_started)
1250 g_raid_md_promise_start(vol);
1251 return (0);
1252 }
1253 return (-2);
1254 }
1255
1256 static int
g_raid_md_ctl_promise(struct g_raid_md_object * md,struct gctl_req * req)1257 g_raid_md_ctl_promise(struct g_raid_md_object *md,
1258 struct gctl_req *req)
1259 {
1260 struct g_raid_softc *sc;
1261 struct g_raid_volume *vol, *vol1;
1262 struct g_raid_subdisk *sd;
1263 struct g_raid_disk *disk, *disks[PROMISE_MAX_DISKS];
1264 struct g_raid_md_promise_perdisk *pd;
1265 struct g_raid_md_promise_pervolume *pv;
1266 struct g_consumer *cp;
1267 struct g_provider *pp;
1268 char arg[16];
1269 const char *nodename, *verb, *volname, *levelname, *diskname;
1270 char *tmp;
1271 int *nargs, *force;
1272 off_t esize, offs[PROMISE_MAX_DISKS], size, sectorsize, strip;
1273 intmax_t *sizearg, *striparg;
1274 int numdisks, i, len, level, qual;
1275 int error;
1276
1277 sc = md->mdo_softc;
1278 verb = gctl_get_param(req, "verb", NULL);
1279 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
1280 error = 0;
1281 if (strcmp(verb, "label") == 0) {
1282 if (*nargs < 4) {
1283 gctl_error(req, "Invalid number of arguments.");
1284 return (-1);
1285 }
1286 volname = gctl_get_asciiparam(req, "arg1");
1287 if (volname == NULL) {
1288 gctl_error(req, "No volume name.");
1289 return (-2);
1290 }
1291 levelname = gctl_get_asciiparam(req, "arg2");
1292 if (levelname == NULL) {
1293 gctl_error(req, "No RAID level.");
1294 return (-3);
1295 }
1296 if (strcasecmp(levelname, "RAID5") == 0)
1297 levelname = "RAID5-LA";
1298 if (g_raid_volume_str2level(levelname, &level, &qual)) {
1299 gctl_error(req, "Unknown RAID level '%s'.", levelname);
1300 return (-4);
1301 }
1302 numdisks = *nargs - 3;
1303 force = gctl_get_paraml(req, "force", sizeof(*force));
1304 if (!g_raid_md_promise_supported(level, qual, numdisks,
1305 force ? *force : 0)) {
1306 gctl_error(req, "Unsupported RAID level "
1307 "(0x%02x/0x%02x), or number of disks (%d).",
1308 level, qual, numdisks);
1309 return (-5);
1310 }
1311
1312 /* Search for disks, connect them and probe. */
1313 size = INT64_MAX;
1314 sectorsize = 0;
1315 bzero(disks, sizeof(disks));
1316 bzero(offs, sizeof(offs));
1317 for (i = 0; i < numdisks; i++) {
1318 snprintf(arg, sizeof(arg), "arg%d", i + 3);
1319 diskname = gctl_get_asciiparam(req, arg);
1320 if (diskname == NULL) {
1321 gctl_error(req, "No disk name (%s).", arg);
1322 error = -6;
1323 break;
1324 }
1325 if (strcmp(diskname, "NONE") == 0)
1326 continue;
1327
1328 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1329 if (disk->d_consumer != NULL &&
1330 disk->d_consumer->provider != NULL &&
1331 strcmp(disk->d_consumer->provider->name,
1332 diskname) == 0)
1333 break;
1334 }
1335 if (disk != NULL) {
1336 if (disk->d_state != G_RAID_DISK_S_ACTIVE) {
1337 gctl_error(req, "Disk '%s' is in a "
1338 "wrong state (%s).", diskname,
1339 g_raid_disk_state2str(disk->d_state));
1340 error = -7;
1341 break;
1342 }
1343 pd = disk->d_md_data;
1344 if (pd->pd_subdisks >= PROMISE_MAX_SUBDISKS) {
1345 gctl_error(req, "Disk '%s' already "
1346 "used by %d volumes.",
1347 diskname, pd->pd_subdisks);
1348 error = -7;
1349 break;
1350 }
1351 pp = disk->d_consumer->provider;
1352 disks[i] = disk;
1353 promise_meta_unused_range(pd->pd_meta,
1354 pd->pd_subdisks,
1355 pp->mediasize / pp->sectorsize,
1356 &offs[i], &esize);
1357 size = MIN(size, (off_t)esize * pp->sectorsize);
1358 sectorsize = MAX(sectorsize, pp->sectorsize);
1359 continue;
1360 }
1361
1362 g_topology_lock();
1363 cp = g_raid_open_consumer(sc, diskname);
1364 if (cp == NULL) {
1365 gctl_error(req, "Can't open disk '%s'.",
1366 diskname);
1367 g_topology_unlock();
1368 error = -8;
1369 break;
1370 }
1371 pp = cp->provider;
1372 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO);
1373 disk = g_raid_create_disk(sc);
1374 disk->d_md_data = (void *)pd;
1375 disk->d_consumer = cp;
1376 disks[i] = disk;
1377 cp->private = disk;
1378 g_topology_unlock();
1379
1380 g_raid_get_disk_info(disk);
1381
1382 /* Reserve some space for metadata. */
1383 size = MIN(size, pp->mediasize - 131072llu * pp->sectorsize);
1384 sectorsize = MAX(sectorsize, pp->sectorsize);
1385 }
1386 if (error != 0) {
1387 for (i = 0; i < numdisks; i++) {
1388 if (disks[i] != NULL &&
1389 disks[i]->d_state == G_RAID_DISK_S_NONE)
1390 g_raid_destroy_disk(disks[i]);
1391 }
1392 return (error);
1393 }
1394
1395 if (sectorsize <= 0) {
1396 gctl_error(req, "Can't get sector size.");
1397 return (-8);
1398 }
1399
1400 /* Handle size argument. */
1401 len = sizeof(*sizearg);
1402 sizearg = gctl_get_param(req, "size", &len);
1403 if (sizearg != NULL && len == sizeof(*sizearg) &&
1404 *sizearg > 0) {
1405 if (*sizearg > size) {
1406 gctl_error(req, "Size too big %lld > %lld.",
1407 (long long)*sizearg, (long long)size);
1408 return (-9);
1409 }
1410 size = *sizearg;
1411 }
1412
1413 /* Handle strip argument. */
1414 strip = 131072;
1415 len = sizeof(*striparg);
1416 striparg = gctl_get_param(req, "strip", &len);
1417 if (striparg != NULL && len == sizeof(*striparg) &&
1418 *striparg > 0) {
1419 if (*striparg < sectorsize) {
1420 gctl_error(req, "Strip size too small.");
1421 return (-10);
1422 }
1423 if (*striparg % sectorsize != 0) {
1424 gctl_error(req, "Incorrect strip size.");
1425 return (-11);
1426 }
1427 strip = *striparg;
1428 }
1429
1430 /* Round size down to strip or sector. */
1431 if (level == G_RAID_VOLUME_RL_RAID1 ||
1432 level == G_RAID_VOLUME_RL_SINGLE ||
1433 level == G_RAID_VOLUME_RL_CONCAT)
1434 size -= (size % sectorsize);
1435 else if (level == G_RAID_VOLUME_RL_RAID1E &&
1436 (numdisks & 1) != 0)
1437 size -= (size % (2 * strip));
1438 else
1439 size -= (size % strip);
1440 if (size <= 0) {
1441 gctl_error(req, "Size too small.");
1442 return (-13);
1443 }
1444
1445 /* We have all we need, create things: volume, ... */
1446 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO);
1447 arc4rand(&pv->pv_id, sizeof(pv->pv_id), 0);
1448 pv->pv_generation = 0;
1449 pv->pv_started = 1;
1450 vol = g_raid_create_volume(sc, volname, -1);
1451 vol->v_md_data = pv;
1452 vol->v_raid_level = level;
1453 vol->v_raid_level_qualifier = qual;
1454 vol->v_strip_size = strip;
1455 vol->v_disks_count = numdisks;
1456 if (level == G_RAID_VOLUME_RL_RAID0 ||
1457 level == G_RAID_VOLUME_RL_CONCAT ||
1458 level == G_RAID_VOLUME_RL_SINGLE)
1459 vol->v_mediasize = size * numdisks;
1460 else if (level == G_RAID_VOLUME_RL_RAID1)
1461 vol->v_mediasize = size;
1462 else if (level == G_RAID_VOLUME_RL_RAID3 ||
1463 level == G_RAID_VOLUME_RL_RAID5)
1464 vol->v_mediasize = size * (numdisks - 1);
1465 else { /* RAID1E */
1466 vol->v_mediasize = ((size * numdisks) / strip / 2) *
1467 strip;
1468 }
1469 vol->v_sectorsize = sectorsize;
1470 g_raid_start_volume(vol);
1471
1472 /* , and subdisks. */
1473 for (i = 0; i < numdisks; i++) {
1474 disk = disks[i];
1475 sd = &vol->v_subdisks[i];
1476 sd->sd_disk = disk;
1477 sd->sd_offset = (off_t)offs[i] * 512;
1478 sd->sd_size = size;
1479 if (disk == NULL)
1480 continue;
1481 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
1482 g_raid_change_disk_state(disk,
1483 G_RAID_DISK_S_ACTIVE);
1484 g_raid_change_subdisk_state(sd,
1485 G_RAID_SUBDISK_S_ACTIVE);
1486 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
1487 G_RAID_EVENT_SUBDISK);
1488 }
1489
1490 /* Write metadata based on created entities. */
1491 G_RAID_DEBUG1(0, sc, "Array started.");
1492 g_raid_md_write_promise(md, vol, NULL, NULL);
1493
1494 /* Pickup any STALE/SPARE disks to refill array if needed. */
1495 g_raid_md_promise_refill(sc);
1496
1497 g_raid_event_send(vol, G_RAID_VOLUME_E_START,
1498 G_RAID_EVENT_VOLUME);
1499 return (0);
1500 }
1501 if (strcmp(verb, "add") == 0) {
1502 gctl_error(req, "`add` command is not applicable, "
1503 "use `label` instead.");
1504 return (-99);
1505 }
1506 if (strcmp(verb, "delete") == 0) {
1507 nodename = gctl_get_asciiparam(req, "arg0");
1508 if (nodename != NULL && strcasecmp(sc->sc_name, nodename) != 0)
1509 nodename = NULL;
1510
1511 /* Full node destruction. */
1512 if (*nargs == 1 && nodename != NULL) {
1513 /* Check if some volume is still open. */
1514 force = gctl_get_paraml(req, "force", sizeof(*force));
1515 if (force != NULL && *force == 0 &&
1516 g_raid_nopens(sc) != 0) {
1517 gctl_error(req, "Some volume is still open.");
1518 return (-4);
1519 }
1520
1521 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1522 if (disk->d_consumer)
1523 promise_meta_erase(disk->d_consumer);
1524 }
1525 g_raid_destroy_node(sc, 0);
1526 return (0);
1527 }
1528
1529 /* Destroy specified volume. If it was last - all node. */
1530 if (*nargs > 2) {
1531 gctl_error(req, "Invalid number of arguments.");
1532 return (-1);
1533 }
1534 volname = gctl_get_asciiparam(req,
1535 nodename != NULL ? "arg1" : "arg0");
1536 if (volname == NULL) {
1537 gctl_error(req, "No volume name.");
1538 return (-2);
1539 }
1540
1541 /* Search for volume. */
1542 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1543 if (strcmp(vol->v_name, volname) == 0)
1544 break;
1545 pp = vol->v_provider;
1546 if (pp == NULL)
1547 continue;
1548 if (strcmp(pp->name, volname) == 0)
1549 break;
1550 if (strncmp(pp->name, "raid/", 5) == 0 &&
1551 strcmp(pp->name + 5, volname) == 0)
1552 break;
1553 }
1554 if (vol == NULL) {
1555 i = strtol(volname, &tmp, 10);
1556 if (verb != volname && tmp[0] == 0) {
1557 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1558 if (vol->v_global_id == i)
1559 break;
1560 }
1561 }
1562 }
1563 if (vol == NULL) {
1564 gctl_error(req, "Volume '%s' not found.", volname);
1565 return (-3);
1566 }
1567
1568 /* Check if volume is still open. */
1569 force = gctl_get_paraml(req, "force", sizeof(*force));
1570 if (force != NULL && *force == 0 &&
1571 vol->v_provider_open != 0) {
1572 gctl_error(req, "Volume is still open.");
1573 return (-4);
1574 }
1575
1576 /* Destroy volume and potentially node. */
1577 i = 0;
1578 TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next)
1579 i++;
1580 if (i >= 2) {
1581 g_raid_destroy_volume(vol);
1582 g_raid_md_promise_purge_disks(sc);
1583 g_raid_md_write_promise(md, NULL, NULL, NULL);
1584 } else {
1585 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1586 if (disk->d_consumer)
1587 promise_meta_erase(disk->d_consumer);
1588 }
1589 g_raid_destroy_node(sc, 0);
1590 }
1591 return (0);
1592 }
1593 if (strcmp(verb, "remove") == 0 ||
1594 strcmp(verb, "fail") == 0) {
1595 if (*nargs < 2) {
1596 gctl_error(req, "Invalid number of arguments.");
1597 return (-1);
1598 }
1599 for (i = 1; i < *nargs; i++) {
1600 snprintf(arg, sizeof(arg), "arg%d", i);
1601 diskname = gctl_get_asciiparam(req, arg);
1602 if (diskname == NULL) {
1603 gctl_error(req, "No disk name (%s).", arg);
1604 error = -2;
1605 break;
1606 }
1607 if (strncmp(diskname, _PATH_DEV, 5) == 0)
1608 diskname += 5;
1609
1610 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1611 if (disk->d_consumer != NULL &&
1612 disk->d_consumer->provider != NULL &&
1613 strcmp(disk->d_consumer->provider->name,
1614 diskname) == 0)
1615 break;
1616 }
1617 if (disk == NULL) {
1618 gctl_error(req, "Disk '%s' not found.",
1619 diskname);
1620 error = -3;
1621 break;
1622 }
1623
1624 if (strcmp(verb, "fail") == 0) {
1625 g_raid_md_fail_disk_promise(md, NULL, disk);
1626 continue;
1627 }
1628
1629 /* Erase metadata on deleting disk and destroy it. */
1630 promise_meta_erase(disk->d_consumer);
1631 g_raid_destroy_disk(disk);
1632 }
1633 g_raid_md_promise_purge_volumes(sc);
1634
1635 /* Write updated metadata to remaining disks. */
1636 g_raid_md_write_promise(md, NULL, NULL, NULL);
1637
1638 /* Check if anything left. */
1639 if (g_raid_ndisks(sc, -1) == 0)
1640 g_raid_destroy_node(sc, 0);
1641 else
1642 g_raid_md_promise_refill(sc);
1643 return (error);
1644 }
1645 if (strcmp(verb, "insert") == 0) {
1646 if (*nargs < 2) {
1647 gctl_error(req, "Invalid number of arguments.");
1648 return (-1);
1649 }
1650 for (i = 1; i < *nargs; i++) {
1651 /* Get disk name. */
1652 snprintf(arg, sizeof(arg), "arg%d", i);
1653 diskname = gctl_get_asciiparam(req, arg);
1654 if (diskname == NULL) {
1655 gctl_error(req, "No disk name (%s).", arg);
1656 error = -3;
1657 break;
1658 }
1659
1660 /* Try to find provider with specified name. */
1661 g_topology_lock();
1662 cp = g_raid_open_consumer(sc, diskname);
1663 if (cp == NULL) {
1664 gctl_error(req, "Can't open disk '%s'.",
1665 diskname);
1666 g_topology_unlock();
1667 error = -4;
1668 break;
1669 }
1670 pp = cp->provider;
1671 g_topology_unlock();
1672
1673 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO);
1674
1675 disk = g_raid_create_disk(sc);
1676 disk->d_consumer = cp;
1677 disk->d_md_data = (void *)pd;
1678 cp->private = disk;
1679
1680 g_raid_get_disk_info(disk);
1681
1682 /* Welcome the "new" disk. */
1683 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
1684 promise_meta_write_spare(cp);
1685 g_raid_md_promise_refill(sc);
1686 }
1687 return (error);
1688 }
1689 return (-100);
1690 }
1691
1692 static int
g_raid_md_write_promise(struct g_raid_md_object * md,struct g_raid_volume * tvol,struct g_raid_subdisk * tsd,struct g_raid_disk * tdisk)1693 g_raid_md_write_promise(struct g_raid_md_object *md, struct g_raid_volume *tvol,
1694 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
1695 {
1696 struct g_raid_softc *sc;
1697 struct g_raid_volume *vol;
1698 struct g_raid_subdisk *sd;
1699 struct g_raid_disk *disk;
1700 struct g_raid_md_promise_perdisk *pd;
1701 struct g_raid_md_promise_pervolume *pv;
1702 struct promise_raid_conf *meta;
1703 off_t rebuild_lba64;
1704 int i, j, pos, rebuild;
1705
1706 sc = md->mdo_softc;
1707
1708 if (sc->sc_stopping == G_RAID_DESTROY_HARD)
1709 return (0);
1710
1711 /* Generate new per-volume metadata for affected volumes. */
1712 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1713 if (vol->v_stopping)
1714 continue;
1715
1716 /* Skip volumes not related to specified targets. */
1717 if (tvol != NULL && vol != tvol)
1718 continue;
1719 if (tsd != NULL && vol != tsd->sd_volume)
1720 continue;
1721 if (tdisk != NULL) {
1722 for (i = 0; i < vol->v_disks_count; i++) {
1723 if (vol->v_subdisks[i].sd_disk == tdisk)
1724 break;
1725 }
1726 if (i >= vol->v_disks_count)
1727 continue;
1728 }
1729
1730 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data;
1731 pv->pv_generation++;
1732
1733 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO);
1734 if (pv->pv_meta != NULL)
1735 memcpy(meta, pv->pv_meta, sizeof(*meta));
1736 memcpy(meta->promise_id, PROMISE_MAGIC,
1737 sizeof(PROMISE_MAGIC) - 1);
1738 meta->dummy_0 = 0x00020000;
1739 meta->integrity = PROMISE_I_VALID;
1740
1741 meta->generation = pv->pv_generation;
1742 meta->status = PROMISE_S_VALID | PROMISE_S_ONLINE |
1743 PROMISE_S_INITED | PROMISE_S_READY;
1744 if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED)
1745 meta->status |= PROMISE_S_DEGRADED;
1746 if (vol->v_dirty)
1747 meta->status |= PROMISE_S_MARKED; /* XXX: INVENTED! */
1748 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0 ||
1749 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE)
1750 meta->type = PROMISE_T_RAID0;
1751 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 ||
1752 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
1753 meta->type = PROMISE_T_RAID1;
1754 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3)
1755 meta->type = PROMISE_T_RAID3;
1756 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5)
1757 meta->type = PROMISE_T_RAID5;
1758 else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT)
1759 meta->type = PROMISE_T_SPAN;
1760 else
1761 meta->type = PROMISE_T_JBOD;
1762 meta->total_disks = vol->v_disks_count;
1763 meta->stripe_shift = ffs(vol->v_strip_size / 1024);
1764 meta->array_width = vol->v_disks_count;
1765 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1)
1766 meta->array_width = 1;
1767 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
1768 meta->array_width /= 2;
1769 meta->array_number = vol->v_global_id;
1770 meta->total_sectors = vol->v_mediasize / 512;
1771 meta->total_sectors_high = (vol->v_mediasize / 512) >> 32;
1772 meta->sector_size = vol->v_sectorsize / 512;
1773 meta->cylinders = meta->total_sectors / (255 * 63) - 1;
1774 meta->heads = 254;
1775 meta->sectors = 63;
1776 meta->volume_id = pv->pv_id;
1777 rebuild_lba64 = UINT64_MAX;
1778 rebuild = 0;
1779 for (i = 0; i < vol->v_disks_count; i++) {
1780 sd = &vol->v_subdisks[i];
1781 /* For RAID0+1 we need to translate order. */
1782 pos = promise_meta_translate_disk(vol, i);
1783 meta->disks[pos].flags = PROMISE_F_VALID |
1784 PROMISE_F_ASSIGNED;
1785 if (sd->sd_state == G_RAID_SUBDISK_S_NONE) {
1786 meta->disks[pos].flags |= 0;
1787 } else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED) {
1788 meta->disks[pos].flags |=
1789 PROMISE_F_DOWN | PROMISE_F_REDIR;
1790 } else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD) {
1791 meta->disks[pos].flags |=
1792 PROMISE_F_ONLINE | PROMISE_F_REDIR;
1793 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) {
1794 rebuild_lba64 = MIN(rebuild_lba64,
1795 sd->sd_rebuild_pos / 512);
1796 } else
1797 rebuild_lba64 = 0;
1798 rebuild = 1;
1799 } else {
1800 meta->disks[pos].flags |= PROMISE_F_ONLINE;
1801 if (sd->sd_state < G_RAID_SUBDISK_S_ACTIVE) {
1802 meta->status |= PROMISE_S_MARKED;
1803 if (sd->sd_state == G_RAID_SUBDISK_S_RESYNC) {
1804 rebuild_lba64 = MIN(rebuild_lba64,
1805 sd->sd_rebuild_pos / 512);
1806 } else
1807 rebuild_lba64 = 0;
1808 }
1809 }
1810 if (pv->pv_meta != NULL) {
1811 meta->disks[pos].id = pv->pv_meta->disks[pos].id;
1812 } else {
1813 meta->disks[pos].number = i * 2;
1814 arc4rand(&meta->disks[pos].id,
1815 sizeof(meta->disks[pos].id), 0);
1816 }
1817 }
1818 promise_meta_put_name(meta, vol->v_name);
1819
1820 /* Try to mimic AMD BIOS rebuild/resync behavior. */
1821 if (rebuild_lba64 != UINT64_MAX) {
1822 if (rebuild)
1823 meta->magic_3 = 0x03040010UL; /* Rebuild? */
1824 else
1825 meta->magic_3 = 0x03040008UL; /* Resync? */
1826 /* Translate from per-disk to per-volume LBA. */
1827 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 ||
1828 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) {
1829 rebuild_lba64 *= meta->array_width;
1830 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3 ||
1831 vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) {
1832 rebuild_lba64 *= meta->array_width - 1;
1833 } else
1834 rebuild_lba64 = 0;
1835 } else
1836 meta->magic_3 = 0x03000000UL;
1837 meta->rebuild_lba64 = rebuild_lba64;
1838 meta->magic_4 = 0x04010101UL;
1839
1840 /* Replace per-volume metadata with new. */
1841 if (pv->pv_meta != NULL)
1842 free(pv->pv_meta, M_MD_PROMISE);
1843 pv->pv_meta = meta;
1844
1845 /* Copy new metadata to the disks, adding or replacing old. */
1846 for (i = 0; i < vol->v_disks_count; i++) {
1847 sd = &vol->v_subdisks[i];
1848 disk = sd->sd_disk;
1849 if (disk == NULL)
1850 continue;
1851 /* For RAID0+1 we need to translate order. */
1852 pos = promise_meta_translate_disk(vol, i);
1853 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
1854 for (j = 0; j < pd->pd_subdisks; j++) {
1855 if (pd->pd_meta[j]->volume_id == meta->volume_id)
1856 break;
1857 }
1858 if (j == pd->pd_subdisks)
1859 pd->pd_subdisks++;
1860 if (pd->pd_meta[j] != NULL)
1861 free(pd->pd_meta[j], M_MD_PROMISE);
1862 pd->pd_meta[j] = promise_meta_copy(meta);
1863 pd->pd_meta[j]->disk = meta->disks[pos];
1864 pd->pd_meta[j]->disk.number = pos;
1865 pd->pd_meta[j]->disk_offset_high =
1866 (sd->sd_offset / 512) >> 32;
1867 pd->pd_meta[j]->disk_offset = sd->sd_offset / 512;
1868 pd->pd_meta[j]->disk_sectors_high =
1869 (sd->sd_size / 512) >> 32;
1870 pd->pd_meta[j]->disk_sectors = sd->sd_size / 512;
1871 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) {
1872 pd->pd_meta[j]->disk_rebuild_high =
1873 (sd->sd_rebuild_pos / 512) >> 32;
1874 pd->pd_meta[j]->disk_rebuild =
1875 sd->sd_rebuild_pos / 512;
1876 } else if (sd->sd_state < G_RAID_SUBDISK_S_REBUILD) {
1877 pd->pd_meta[j]->disk_rebuild_high = 0;
1878 pd->pd_meta[j]->disk_rebuild = 0;
1879 } else {
1880 pd->pd_meta[j]->disk_rebuild_high = UINT32_MAX;
1881 pd->pd_meta[j]->disk_rebuild = UINT32_MAX;
1882 }
1883 pd->pd_updated = 1;
1884 }
1885 }
1886
1887 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1888 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
1889 if (disk->d_state != G_RAID_DISK_S_ACTIVE)
1890 continue;
1891 if (!pd->pd_updated)
1892 continue;
1893 G_RAID_DEBUG(1, "Writing Promise metadata to %s",
1894 g_raid_get_diskname(disk));
1895 for (i = 0; i < pd->pd_subdisks; i++)
1896 g_raid_md_promise_print(pd->pd_meta[i]);
1897 promise_meta_write(disk->d_consumer,
1898 pd->pd_meta, pd->pd_subdisks);
1899 pd->pd_updated = 0;
1900 }
1901
1902 return (0);
1903 }
1904
1905 static int
g_raid_md_fail_disk_promise(struct g_raid_md_object * md,struct g_raid_subdisk * tsd,struct g_raid_disk * tdisk)1906 g_raid_md_fail_disk_promise(struct g_raid_md_object *md,
1907 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
1908 {
1909 struct g_raid_softc *sc;
1910 struct g_raid_md_promise_perdisk *pd;
1911 struct g_raid_subdisk *sd;
1912 int i, pos;
1913
1914 sc = md->mdo_softc;
1915 pd = (struct g_raid_md_promise_perdisk *)tdisk->d_md_data;
1916
1917 /* We can't fail disk that is not a part of array now. */
1918 if (tdisk->d_state != G_RAID_DISK_S_ACTIVE)
1919 return (-1);
1920
1921 /*
1922 * Mark disk as failed in metadata and try to write that metadata
1923 * to the disk itself to prevent it's later resurrection as STALE.
1924 */
1925 if (pd->pd_subdisks > 0 && tdisk->d_consumer != NULL)
1926 G_RAID_DEBUG(1, "Writing Promise metadata to %s",
1927 g_raid_get_diskname(tdisk));
1928 for (i = 0; i < pd->pd_subdisks; i++) {
1929 pd->pd_meta[i]->disk.flags |=
1930 PROMISE_F_DOWN | PROMISE_F_REDIR;
1931 pos = pd->pd_meta[i]->disk.number;
1932 if (pos >= 0 && pos < PROMISE_MAX_DISKS) {
1933 pd->pd_meta[i]->disks[pos].flags |=
1934 PROMISE_F_DOWN | PROMISE_F_REDIR;
1935 }
1936 g_raid_md_promise_print(pd->pd_meta[i]);
1937 }
1938 if (tdisk->d_consumer != NULL)
1939 promise_meta_write(tdisk->d_consumer,
1940 pd->pd_meta, pd->pd_subdisks);
1941
1942 /* Change states. */
1943 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
1944 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
1945 g_raid_change_subdisk_state(sd,
1946 G_RAID_SUBDISK_S_FAILED);
1947 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
1948 G_RAID_EVENT_SUBDISK);
1949 }
1950
1951 /* Write updated metadata to remaining disks. */
1952 g_raid_md_write_promise(md, NULL, NULL, tdisk);
1953
1954 g_raid_md_promise_refill(sc);
1955 return (0);
1956 }
1957
1958 static int
g_raid_md_free_disk_promise(struct g_raid_md_object * md,struct g_raid_disk * disk)1959 g_raid_md_free_disk_promise(struct g_raid_md_object *md,
1960 struct g_raid_disk *disk)
1961 {
1962 struct g_raid_md_promise_perdisk *pd;
1963 int i;
1964
1965 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
1966 for (i = 0; i < pd->pd_subdisks; i++) {
1967 if (pd->pd_meta[i] != NULL) {
1968 free(pd->pd_meta[i], M_MD_PROMISE);
1969 pd->pd_meta[i] = NULL;
1970 }
1971 }
1972 free(pd, M_MD_PROMISE);
1973 disk->d_md_data = NULL;
1974 return (0);
1975 }
1976
1977 static int
g_raid_md_free_volume_promise(struct g_raid_md_object * md,struct g_raid_volume * vol)1978 g_raid_md_free_volume_promise(struct g_raid_md_object *md,
1979 struct g_raid_volume *vol)
1980 {
1981 struct g_raid_md_promise_pervolume *pv;
1982
1983 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data;
1984 if (pv && pv->pv_meta != NULL) {
1985 free(pv->pv_meta, M_MD_PROMISE);
1986 pv->pv_meta = NULL;
1987 }
1988 if (pv && !pv->pv_started) {
1989 pv->pv_started = 1;
1990 callout_stop(&pv->pv_start_co);
1991 }
1992 free(pv, M_MD_PROMISE);
1993 vol->v_md_data = NULL;
1994 return (0);
1995 }
1996
1997 static int
g_raid_md_free_promise(struct g_raid_md_object * md)1998 g_raid_md_free_promise(struct g_raid_md_object *md)
1999 {
2000
2001 return (0);
2002 }
2003
2004 G_RAID_MD_DECLARE(promise, "Promise");
2005