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platform-intel - cache 'intel_devices' for a few seconds.
[thirdparty/mdadm.git] / Detail.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2012 Neil Brown <neilb@suse.de>
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Author: Neil Brown
22 * Email: <neilb@suse.de>
23 */
24
25 #include "mdadm.h"
26 #include "md_p.h"
27 #include "md_u.h"
28 #include <dirent.h>
29
30 int Detail(char *dev, struct context *c)
31 {
32 /*
33 * Print out details for an md array by using
34 * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
35 */
36
37 int fd = open(dev, O_RDONLY);
38 int vers;
39 mdu_array_info_t array;
40 mdu_disk_info_t *disks;
41 int next;
42 int d;
43 time_t atime;
44 char *str;
45 char *devices = NULL;
46 int spares = 0;
47 struct stat stb;
48 int is_26 = get_linux_version() >= 2006000;
49 int is_rebuilding = 0;
50 int failed = 0;
51 struct supertype *st;
52 char *subarray = NULL;
53 int max_disks = MD_SB_DISKS; /* just a default */
54 struct mdinfo *info = NULL;
55 struct mdinfo *sra;
56 char *member = NULL;
57 char *container = NULL;
58
59 int rv = c->test ? 4 : 1;
60 int avail_disks = 0;
61 char *avail = NULL;
62
63 if (fd < 0) {
64 pr_err("cannot open %s: %s\n",
65 dev, strerror(errno));
66 return rv;
67 }
68 vers = md_get_version(fd);
69 if (vers < 0) {
70 pr_err("%s does not appear to be an md device\n",
71 dev);
72 close(fd);
73 return rv;
74 }
75 if (vers < 9000) {
76 pr_err("cannot get detail for md device %s: driver version too old.\n",
77 dev);
78 close(fd);
79 return rv;
80 }
81 if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
82 if (errno == ENODEV)
83 pr_err("md device %s does not appear to be active.\n",
84 dev);
85 else
86 pr_err("cannot get array detail for %s: %s\n",
87 dev, strerror(errno));
88 close(fd);
89 return rv;
90 }
91 sra = sysfs_read(fd, 0, GET_VERSION);
92 st = super_by_fd(fd, &subarray);
93
94 if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
95 stb.st_rdev = 0;
96 rv = 0;
97
98 if (st)
99 max_disks = st->max_devs;
100
101 if (subarray) {
102 /* This is a subarray of some container.
103 * We want the name of the container, and the member
104 */
105 int dn = st->container_dev;
106
107 member = subarray;
108 container = map_dev_preferred(dev2major(dn), dev2minor(dn), 1, c->prefer);
109 }
110
111 /* try to load a superblock */
112 if (st) for (d = 0; d < max_disks; d++) {
113 mdu_disk_info_t disk;
114 char *dv;
115 int fd2;
116 int err;
117 disk.number = d;
118 if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
119 continue;
120 if (d >= array.raid_disks &&
121 disk.major == 0 &&
122 disk.minor == 0)
123 continue;
124
125 if (array.raid_disks > 0 &&
126 (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
127 continue;
128
129 dv = map_dev(disk.major, disk.minor, 1);
130 if (!dv)
131 continue;
132
133 fd2 = dev_open(dv, O_RDONLY);
134 if (fd2 < 0)
135 continue;
136
137 if (st->sb)
138 st->ss->free_super(st);
139
140 err = st->ss->load_super(st, fd2, NULL);
141 close(fd2);
142 if (err)
143 continue;
144 if (info)
145 free(info);
146 if (subarray)
147 info = st->ss->container_content(st, subarray);
148 else {
149 info = xmalloc(sizeof(*info));
150 st->ss->getinfo_super(st, info, NULL);
151 }
152 if (!info)
153 continue;
154
155 if (array.raid_disks != 0 && /* container */
156 (info->array.ctime != array.ctime ||
157 info->array.level != array.level)) {
158 st->ss->free_super(st);
159 continue;
160 }
161 /* some formats (imsm) have free-floating-spares
162 * with a uuid of uuid_zero, they don't
163 * have very good info about the rest of the
164 * container, so keep searching when
165 * encountering such a device. Otherwise, stop
166 * after the first successful call to
167 * ->load_super.
168 */
169 if (memcmp(uuid_zero,
170 info->uuid,
171 sizeof(uuid_zero)) == 0) {
172 st->ss->free_super(st);
173 continue;
174 }
175 break;
176 }
177
178 /* Ok, we have some info to print... */
179 str = map_num(pers, array.level);
180
181 if (c->export) {
182 if (array.raid_disks) {
183 if (str)
184 printf("MD_LEVEL=%s\n", str);
185 printf("MD_DEVICES=%d\n", array.raid_disks);
186 } else {
187 printf("MD_LEVEL=container\n");
188 printf("MD_DEVICES=%d\n", array.nr_disks);
189 }
190 if (container) {
191 printf("MD_CONTAINER=%s\n", container);
192 printf("MD_MEMBER=%s\n", member);
193 } else {
194 if (sra && sra->array.major_version < 0)
195 printf("MD_METADATA=%s\n", sra->text_version);
196 else
197 printf("MD_METADATA=%d.%d\n",
198 array.major_version, array.minor_version);
199 }
200
201 if (st && st->sb && info) {
202 char nbuf[64];
203 struct map_ent *mp, *map = NULL;
204
205 fname_from_uuid(st, info, nbuf, ':');
206 printf("MD_UUID=%s\n", nbuf+5);
207 mp = map_by_uuid(&map, info->uuid);
208 if (mp && mp->path &&
209 strncmp(mp->path, "/dev/md/", 8) == 0) {
210 printf("MD_DEVNAME=");
211 print_escape(mp->path+8);
212 putchar('\n');
213 }
214
215 if (st->ss->export_detail_super)
216 st->ss->export_detail_super(st);
217 } else {
218 struct map_ent *mp, *map = NULL;
219 char nbuf[64];
220 mp = map_by_devnum(&map, fd2devnum(fd));
221 if (mp) {
222 __fname_from_uuid(mp->uuid, 0, nbuf, ':');
223 printf("MD_UUID=%s\n", nbuf+5);
224 }
225 if (mp && mp->path &&
226 strncmp(mp->path, "/dev/md/", 8) == 0) {
227 printf("MD_DEVNAME=");
228 print_escape(mp->path+8);
229 putchar('\n');
230 }
231 }
232 goto out;
233 }
234
235 disks = xmalloc(max_disks * sizeof(mdu_disk_info_t));
236 for (d = 0; d < max_disks; d++) {
237 disks[d].state = (1<<MD_DISK_REMOVED);
238 disks[d].major = disks[d].minor = 0;
239 disks[d].number = disks[d].raid_disk = d;
240 }
241
242 next = array.raid_disks*2;
243 for (d = 0; d < max_disks; d++) {
244 mdu_disk_info_t disk;
245 disk.number = d;
246 if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
247 if (d < array.raid_disks)
248 pr_err("cannot get device detail for device %d: %s\n",
249 d, strerror(errno));
250 continue;
251 }
252 if (disk.major == 0 && disk.minor == 0)
253 continue;
254 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks
255 && disks[disk.raid_disk*2].state == (1<<MD_DISK_REMOVED))
256 disks[disk.raid_disk*2] = disk;
257 else if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks
258 && disks[disk.raid_disk*2+1].state == (1<<MD_DISK_REMOVED))
259 disks[disk.raid_disk*2+1] = disk;
260 else if (next < max_disks)
261 disks[next++] = disk;
262 }
263
264 avail = xcalloc(array.raid_disks, 1);
265
266 for (d= 0; d < array.raid_disks; d++) {
267
268 if ((disks[d*2].state & (1<<MD_DISK_SYNC)) ||
269 (disks[d*2+1].state & (1<<MD_DISK_SYNC))) {
270 avail_disks ++;
271 avail[d] = 1;
272 }
273 }
274
275 if (c->brief) {
276 mdu_bitmap_file_t bmf;
277 printf("ARRAY %s", dev);
278 if (c->brief > 1) {
279 if (array.raid_disks)
280 printf(" level=%s num-devices=%d",
281 str?str:"-unknown-",
282 array.raid_disks );
283 else
284 printf(" level=container num-devices=%d",
285 array.nr_disks);
286 }
287 if (container) {
288 printf(" container=%s", container);
289 printf(" member=%s", member);
290 } else {
291 if (sra && sra->array.major_version < 0)
292 printf(" metadata=%s", sra->text_version);
293 else
294 printf(" metadata=%d.%d",
295 array.major_version, array.minor_version);
296 }
297
298 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
299 if (vers >= 9001 &&
300 ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
301 bmf.pathname[0]) {
302 printf(" bitmap=%s", bmf.pathname);
303 }
304 } else {
305 mdu_bitmap_file_t bmf;
306 unsigned long long larray_size;
307 struct mdstat_ent *ms = mdstat_read(0, 0);
308 struct mdstat_ent *e;
309 int devnum = array.md_minor;
310 if (major(stb.st_rdev) == (unsigned)get_mdp_major())
311 devnum = -1 - devnum;
312
313 for (e=ms; e; e=e->next)
314 if (e->devnum == devnum)
315 break;
316 if (!get_dev_size(fd, NULL, &larray_size))
317 larray_size = 0;
318
319 printf("%s:\n", dev);
320
321 if (container)
322 printf(" Container : %s, member %s\n", container, member);
323 else {
324 if (sra && sra->array.major_version < 0)
325 printf(" Version : %s\n", sra->text_version);
326 else
327 printf(" Version : %d.%d\n",
328 array.major_version, array.minor_version);
329 }
330
331 atime = array.ctime;
332 if (atime)
333 printf(" Creation Time : %.24s\n", ctime(&atime));
334 if (array.raid_disks == 0)
335 str = "container";
336 printf(" Raid Level : %s\n", str?str:"-unknown-");
337 if (larray_size)
338 printf(" Array Size : %llu%s\n", (larray_size>>10),
339 human_size(larray_size));
340 if (array.level >= 1) {
341 if (array.major_version != 0 &&
342 (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
343 unsigned long long dsize = get_component_size(fd);
344 if (dsize > 0)
345 printf(" Used Dev Size : %llu%s\n",
346 dsize/2,
347 human_size((long long)dsize<<9));
348 else
349 printf(" Used Dev Size : unknown\n");
350 } else
351 printf(" Used Dev Size : %d%s\n", array.size,
352 human_size((long long)array.size<<10));
353 }
354 if (array.raid_disks)
355 printf(" Raid Devices : %d\n", array.raid_disks);
356 printf(" Total Devices : %d\n", array.nr_disks);
357 if (!container &&
358 ((sra == NULL && array.major_version == 0) ||
359 (sra && sra->array.major_version == 0)))
360 printf("Preferred Minor : %d\n", array.md_minor);
361 if (sra == NULL || sra->array.major_version >= 0)
362 printf(" Persistence : Superblock is %spersistent\n",
363 array.not_persistent?"not ":"");
364 printf("\n");
365 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
366 if (vers >= 9001 &&
367 ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
368 bmf.pathname[0]) {
369 printf(" Intent Bitmap : %s\n", bmf.pathname);
370 printf("\n");
371 } else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
372 printf(" Intent Bitmap : Internal\n\n");
373 atime = array.utime;
374 if (atime)
375 printf(" Update Time : %.24s\n", ctime(&atime));
376 if (array.raid_disks) {
377 static char *sync_action[] = {
378 ", recovering", ", resyncing",
379 ", reshaping", ", checking" };
380 char *st;
381 if (avail_disks == array.raid_disks)
382 st = "";
383 else if (!enough(array.level, array.raid_disks,
384 array.layout, 1, avail))
385 st = ", FAILED";
386 else
387 st = ", degraded";
388
389 printf(" State : %s%s%s%s%s%s \n",
390 (array.state&(1<<MD_SB_CLEAN))?"clean":"active", st,
391 (!e || (e->percent < 0 && e->percent != RESYNC_PENDING &&
392 e->percent != RESYNC_DELAYED)) ? "" : sync_action[e->resync],
393 larray_size ? "": ", Not Started",
394 e->percent == RESYNC_DELAYED ? " (DELAYED)": "",
395 e->percent == RESYNC_PENDING ? " (PENDING)": "");
396 }
397 if (array.raid_disks)
398 printf(" Active Devices : %d\n", array.active_disks);
399 printf("Working Devices : %d\n", array.working_disks);
400 if (array.raid_disks) {
401 printf(" Failed Devices : %d\n", array.failed_disks);
402 printf(" Spare Devices : %d\n", array.spare_disks);
403 }
404 printf("\n");
405 if (array.level == 5) {
406 str = map_num(r5layout, array.layout);
407 printf(" Layout : %s\n", str?str:"-unknown-");
408 }
409 if (array.level == 6) {
410 str = map_num(r6layout, array.layout);
411 printf(" Layout : %s\n", str?str:"-unknown-");
412 }
413 if (array.level == 10) {
414 printf(" Layout :");
415 print_r10_layout(array.layout);
416 printf("\n");
417 }
418 switch (array.level) {
419 case 0:
420 case 4:
421 case 5:
422 case 10:
423 case 6:
424 if (array.chunk_size)
425 printf(" Chunk Size : %dK\n\n",
426 array.chunk_size/1024);
427 break;
428 case -1:
429 printf(" Rounding : %dK\n\n", array.chunk_size/1024);
430 break;
431 default: break;
432 }
433
434 if (e && e->percent >= 0) {
435 static char *sync_action[] = {
436 "Rebuild", "Resync",
437 "Reshape", "Check"};
438 printf(" %7s Status : %d%% complete\n", sync_action[e->resync], e->percent);
439 is_rebuilding = 1;
440 }
441 free_mdstat(ms);
442
443 if ((st && st->sb) && (info && info->reshape_active)) {
444 #if 0
445 This is pretty boring
446 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info->reshape_progress<<9,
447 human_size((unsigned long long)info->reshape_progress<<9));
448 #endif
449 if (info->delta_disks != 0)
450 printf(" Delta Devices : %d, (%d->%d)\n",
451 info->delta_disks,
452 array.raid_disks - info->delta_disks,
453 array.raid_disks);
454 if (info->new_level != array.level) {
455 str = map_num(pers, info->new_level);
456 printf(" New Level : %s\n", str?str:"-unknown-");
457 }
458 if (info->new_level != array.level ||
459 info->new_layout != array.layout) {
460 if (info->new_level == 5) {
461 str = map_num(r5layout, info->new_layout);
462 printf(" New Layout : %s\n",
463 str?str:"-unknown-");
464 }
465 if (info->new_level == 6) {
466 str = map_num(r6layout, info->new_layout);
467 printf(" New Layout : %s\n",
468 str?str:"-unknown-");
469 }
470 if (info->new_level == 10) {
471 printf(" New Layout : near=%d, %s=%d\n",
472 info->new_layout&255,
473 (info->new_layout&0x10000)?"offset":"far",
474 (info->new_layout>>8)&255);
475 }
476 }
477 if (info->new_chunk != array.chunk_size)
478 printf(" New Chunksize : %dK\n", info->new_chunk/1024);
479 printf("\n");
480 } else if (e && e->percent >= 0)
481 printf("\n");
482 if (st && st->sb)
483 st->ss->detail_super(st, c->homehost);
484
485 if (array.raid_disks == 0 && sra && sra->array.major_version == -1
486 && sra->array.minor_version == -2 && sra->text_version[0] != '/') {
487 /* This looks like a container. Find any active arrays
488 * That claim to be a member.
489 */
490 DIR *dir = opendir("/sys/block");
491 struct dirent *de;
492
493 printf(" Member Arrays :");
494
495 while (dir && (de = readdir(dir)) != NULL) {
496 char path[200];
497 char vbuf[1024];
498 int nlen = strlen(sra->sys_name);
499 int dn;
500 if (de->d_name[0] == '.')
501 continue;
502 sprintf(path, "/sys/block/%s/md/metadata_version",
503 de->d_name);
504 if (load_sys(path, vbuf) < 0)
505 continue;
506 if (strncmp(vbuf, "external:", 9) != 0 ||
507 !is_subarray(vbuf+9) ||
508 strncmp(vbuf+10, sra->sys_name, nlen) != 0 ||
509 vbuf[10+nlen] != '/')
510 continue;
511 dn = devname2devnum(de->d_name);
512 printf(" %s", map_dev_preferred(
513 dev2major(dn),
514 dev2minor(dn), 1, c->prefer));
515 }
516 if (dir)
517 closedir(dir);
518 printf("\n\n");
519 }
520
521 if (array.raid_disks)
522 printf(" Number Major Minor RaidDevice State\n");
523 else
524 printf(" Number Major Minor RaidDevice\n");
525 }
526 free(info);
527
528 for (d= 0; d < max_disks; d++) {
529 char *dv;
530 mdu_disk_info_t disk = disks[d];
531
532 if (d >= array.raid_disks*2 &&
533 disk.major == 0 &&
534 disk.minor == 0)
535 continue;
536 if ((d & 1) &&
537 disk.major == 0 &&
538 disk.minor == 0)
539 continue;
540 if (!c->brief) {
541 if (d == array.raid_disks*2) printf("\n");
542 if (disk.raid_disk < 0)
543 printf(" %5d %5d %5d - ",
544 disk.number, disk.major, disk.minor);
545 else
546 printf(" %5d %5d %5d %5d ",
547 disk.number, disk.major, disk.minor, disk.raid_disk);
548 }
549 if (!c->brief && array.raid_disks) {
550
551 if (disk.state & (1<<MD_DISK_FAULTY)) {
552 printf(" faulty");
553 if (disk.raid_disk < array.raid_disks &&
554 disk.raid_disk >= 0)
555 failed++;
556 }
557 if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
558 if (disk.state & (1<<MD_DISK_SYNC)) {
559 printf(" sync");
560 if (array.level == 10 && (array.layout & ~0x1FFFF) == 0) {
561 int nc = array.layout & 0xff;
562 int fc = (array.layout >> 8) & 0xff;
563 int copies = nc*fc;
564 if (fc == 1 && array.raid_disks % copies == 0 && copies <= 26) {
565 /* We can divide the devices into 'sets' */
566 int set = disk.raid_disk % copies;
567 printf(" set-%c", set + 'A');
568 }
569 }
570 }
571 if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
572 if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
573 if ((disk.state &
574 ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)
575 |(1<<MD_DISK_REMOVED)|(1<<MD_DISK_FAULTY)))
576 == 0) {
577 printf(" spare");
578 if (is_26) {
579 if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
580 printf(" rebuilding");
581 } else if (is_rebuilding && failed) {
582 /* Taking a bit of a risk here, we remove the
583 * device from the array, and then put it back.
584 * If this fails, we are rebuilding
585 */
586 int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
587 if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
588 if (err && errno == EBUSY)
589 printf(" rebuilding");
590 }
591 }
592 }
593 if (disk.state == 0) spares++;
594 if (c->test && d < array.raid_disks
595 && !(disk.state & (1<<MD_DISK_SYNC)))
596 rv |= 1;
597 dv=map_dev_preferred(disk.major, disk.minor, 0, c->prefer);
598 if (dv != NULL) {
599 if (c->brief) {
600 if (devices) {
601 devices = xrealloc(devices,
602 strlen(devices)+1+strlen(dv)+1);
603 strcat(strcat(devices,","),dv);
604 } else
605 devices = xstrdup(dv);
606 } else
607 printf(" %s", dv);
608 }
609 if (!c->brief) printf("\n");
610 }
611 if (spares && c->brief && array.raid_disks) printf(" spares=%d", spares);
612 if (c->brief && st && st->sb)
613 st->ss->brief_detail_super(st);
614 if (st)
615 st->ss->free_super(st);
616
617 if (c->brief > 1 && devices) printf("\n devices=%s", devices);
618 if (c->brief)
619 printf("\n");
620 if (c->test &&
621 !enough(array.level, array.raid_disks, array.layout,
622 1, avail))
623 rv = 2;
624
625 free(disks);
626 out:
627 close(fd);
628 free(subarray);
629 free(avail);
630 sysfs_free(sra);
631 return rv;
632 }
633
634 int Detail_Platform(struct superswitch *ss, int scan, int verbose, int export, char *controller_path)
635 {
636 /* display platform capabilities for the given metadata format
637 * 'scan' in this context means iterate over all metadata types
638 */
639 int i;
640 int err = 1;
641
642 if (ss && export && ss->export_detail_platform)
643 err = ss->export_detail_platform(verbose, controller_path);
644 else if (ss && ss->detail_platform)
645 err = ss->detail_platform(verbose, 0, controller_path);
646 else if (ss) {
647 if (verbose > 0)
648 pr_err("%s metadata is platform independent\n",
649 ss->name ? : "[no name]");
650 } else if (!scan) {
651 if (verbose > 0)
652 pr_err("specify a metadata type or --scan\n");
653 }
654
655 if (!scan)
656 return err;
657
658 err = 0;
659 for (i = 0; superlist[i]; i++) {
660 struct superswitch *meta = superlist[i];
661
662 if (meta == ss)
663 continue;
664 if (verbose > 0)
665 pr_err("checking metadata %s\n",
666 meta->name ? : "[no name]");
667 if (!meta->detail_platform) {
668 if (verbose > 0)
669 pr_err("%s metadata is platform independent\n",
670 meta->name ? : "[no name]");
671 } else if (export && meta->export_detail_platform) {
672 err |= meta->export_detail_platform(verbose, controller_path);
673 } else
674 err |= meta->detail_platform(verbose, 0, controller_path);
675 }
676
677 return err;
678 }
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