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Commit | Line | Data |
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64c4757e | 1 | /* |
9a9dab36 | 2 | * mdadm - manage Linux "md" devices aka RAID arrays. |
64c4757e | 3 | * |
4f589ad0 | 4 | * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de> |
64c4757e NB |
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@cse.unsw.edu.au> | |
23 | * Paper: Neil Brown | |
24 | * School of Computer Science and Engineering | |
25 | * The University of New South Wales | |
26 | * Sydney, 2052 | |
27 | * Australia | |
28 | */ | |
29 | ||
9a9dab36 | 30 | #include "mdadm.h" |
64c4757e NB |
31 | #include "md_p.h" |
32 | #include "md_u.h" | |
33 | ||
54bad364 | 34 | int Detail(char *dev, int brief, int export, int test, char *homehost) |
64c4757e NB |
35 | { |
36 | /* | |
37 | * Print out details for an md array by using | |
38 | * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls | |
39 | */ | |
40 | ||
41 | int fd = open(dev, O_RDONLY, 0); | |
42 | int vers; | |
43 | mdu_array_info_t array; | |
b0c63f32 NB |
44 | mdu_disk_info_t *disks; |
45 | int next; | |
64c4757e NB |
46 | int d; |
47 | time_t atime; | |
682c7051 | 48 | char *c; |
d013a55e | 49 | char *devices = NULL; |
feb716e9 | 50 | int spares = 0; |
dd0781e5 | 51 | struct stat stb; |
e5329c37 NB |
52 | int is_26 = get_linux_version() >= 2006000; |
53 | int is_rebuilding = 0; | |
54 | int failed = 0; | |
82d9eba6 | 55 | struct supertype *st = NULL; |
e27d562b | 56 | int max_disks = MD_SB_DISKS; /* just a default */ |
bed256c2 | 57 | struct mdinfo info; |
142cb9e1 | 58 | struct mdinfo *sra; |
64c4757e | 59 | |
feb716e9 | 60 | int rv = test ? 4 : 1; |
a77be586 NB |
61 | int avail_disks = 0; |
62 | char *avail; | |
82b27616 | 63 | |
64c4757e | 64 | if (fd < 0) { |
682c7051 | 65 | fprintf(stderr, Name ": cannot open %s: %s\n", |
64c4757e | 66 | dev, strerror(errno)); |
feb716e9 | 67 | return rv; |
64c4757e NB |
68 | } |
69 | vers = md_get_version(fd); | |
70 | if (vers < 0) { | |
682c7051 | 71 | fprintf(stderr, Name ": %s does not appear to be an md device\n", |
64c4757e NB |
72 | dev); |
73 | close(fd); | |
feb716e9 | 74 | return rv; |
64c4757e | 75 | } |
682c7051 NB |
76 | if (vers < 9000) { |
77 | fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n", | |
64c4757e NB |
78 | dev); |
79 | close(fd); | |
feb716e9 | 80 | return rv; |
64c4757e NB |
81 | } |
82 | if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { | |
83 | if (errno == ENODEV) | |
682c7051 | 84 | fprintf(stderr, Name ": md device %s does not appear to be active.\n", |
64c4757e NB |
85 | dev); |
86 | else | |
682c7051 | 87 | fprintf(stderr, Name ": cannot get array detail for %s: %s\n", |
64c4757e NB |
88 | dev, strerror(errno)); |
89 | close(fd); | |
feb716e9 | 90 | return rv; |
64c4757e | 91 | } |
142cb9e1 | 92 | sra = sysfs_read(fd, 0, GET_VERSION); |
1686dc25 | 93 | st = super_by_fd(fd); |
f9ce90ba | 94 | |
dd0781e5 NB |
95 | if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode)) |
96 | stb.st_rdev = 0; | |
feb716e9 | 97 | rv = 0; |
e5329c37 | 98 | |
ea329559 NB |
99 | if (st) max_disks = st->max_devs; |
100 | ||
e5329c37 | 101 | /* try to load a superblock */ |
ea329559 | 102 | for (d= 0; d<max_disks; d++) { |
e5329c37 NB |
103 | mdu_disk_info_t disk; |
104 | char *dv; | |
105 | disk.number = d; | |
106 | if (ioctl(fd, GET_DISK_INFO, &disk) < 0) | |
107 | continue; | |
108 | if (d >= array.raid_disks && | |
109 | disk.major == 0 && | |
110 | disk.minor == 0) | |
111 | continue; | |
16c6fa80 | 112 | if ((dv=map_dev(disk.major, disk.minor, 1))) { |
3da92f27 NB |
113 | if ((!st || !st->sb) && |
114 | (disk.state & (1<<MD_DISK_ACTIVE))) { | |
e5329c37 NB |
115 | /* try to read the superblock from this device |
116 | * to get more info | |
117 | */ | |
16c6fa80 | 118 | int fd2 = dev_open(dv, O_RDONLY); |
82d9eba6 | 119 | if (fd2 >=0 && st && |
3da92f27 NB |
120 | st->ss->load_super(st, fd2, NULL) == 0) { |
121 | st->ss->getinfo_super(st, &info); | |
4b1ac34b | 122 | if (info.array.ctime != array.ctime || |
3da92f27 NB |
123 | info.array.level != array.level) |
124 | st->ss->free_super(st); | |
4b1ac34b | 125 | } |
e5329c37 NB |
126 | if (fd2 >= 0) close(fd2); |
127 | } | |
128 | } | |
129 | } | |
130 | ||
64c4757e | 131 | /* Ok, we have some info to print... */ |
682c7051 | 132 | c = map_num(pers, array.level); |
54bad364 KS |
133 | |
134 | if (export) { | |
135 | if (c) | |
136 | printf("MD_LEVEL=%s\n", c); | |
137 | printf("MD_DEVICES=%d\n", array.raid_disks); | |
142cb9e1 NB |
138 | if (sra && sra->array.major_version < 0) |
139 | printf("MD_METADATA=%s\n", sra->text_version); | |
140 | else | |
141 | printf("MD_METADATA=%02d.%02d\n", | |
142 | array.major_version, array.minor_version); | |
143 | ||
3da92f27 | 144 | if (st && st->sb) |
0d726f17 | 145 | st->ss->export_detail_super(st); |
54bad364 KS |
146 | goto out; |
147 | } | |
148 | ||
142cb9e1 NB |
149 | if (brief) { |
150 | printf("ARRAY %s level=%s num-devices=%d", dev, | |
7615d989 | 151 | c?c:"-unknown-", |
7615d989 | 152 | array.raid_disks ); |
142cb9e1 NB |
153 | if (sra && sra->array.major_version < 0) |
154 | printf(" metadata=%s", sra->text_version); | |
155 | else | |
156 | printf(" metadata=%02d.%02d", | |
157 | array.major_version, array.minor_version); | |
158 | } else { | |
8fac0577 | 159 | mdu_bitmap_file_t bmf; |
e0d19036 | 160 | unsigned long long larray_size; |
22a88995 | 161 | struct mdstat_ent *ms = mdstat_read(0, 0); |
dd0781e5 NB |
162 | struct mdstat_ent *e; |
163 | int devnum = array.md_minor; | |
0df46c2a | 164 | if (major(stb.st_rdev) != MD_MAJOR) |
dd0781e5 NB |
165 | devnum = -1 - devnum; |
166 | ||
167 | for (e=ms; e; e=e->next) | |
168 | if (e->devnum == devnum) | |
169 | break; | |
beae1dfe NB |
170 | if (!get_dev_size(fd, NULL, &larray_size)) |
171 | larray_size = 0; | |
56eb10c0 | 172 | |
cd29a5c8 | 173 | printf("%s:\n", dev); |
142cb9e1 NB |
174 | |
175 | if (sra && sra->array.major_version < 0) | |
176 | printf(" Version : %s\n", sra->text_version); | |
177 | else | |
178 | printf(" Version : %02d.%02d\n", | |
179 | array.major_version, array.minor_version); | |
180 | ||
cd29a5c8 NB |
181 | atime = array.ctime; |
182 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
142cb9e1 | 183 | if (array.raid_disks == 0) c = "container"; |
cd29a5c8 | 184 | printf(" Raid Level : %s\n", c?c:"-unknown-"); |
56eb10c0 | 185 | if (larray_size) |
dd0781e5 | 186 | printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size)); |
3d4064cc NB |
187 | if (array.level >= 1) { |
188 | if (array.major_version != 0 && | |
6ee5c05a NB |
189 | (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) { |
190 | unsigned long long dsize = get_component_size(fd); | |
191 | if (dsize > 0) | |
e3362544 NB |
192 | printf(" Used Dev Size : %llu%s\n", |
193 | dsize, | |
7a3be72f | 194 | human_size((long long)dsize<<10)); |
6ee5c05a | 195 | else |
e3362544 | 196 | printf(" Used Dev Size : unknown\n"); |
6ee5c05a | 197 | } else |
e3362544 NB |
198 | printf(" Used Dev Size : %d%s\n", array.size, |
199 | human_size((long long)array.size<<10)); | |
3d4064cc | 200 | } |
b83d95f3 NB |
201 | printf(" Raid Devices : %d\n", array.raid_disks); |
202 | printf(" Total Devices : %d\n", array.nr_disks); | |
cd29a5c8 | 203 | printf("Preferred Minor : %d\n", array.md_minor); |
142cb9e1 NB |
204 | if (sra == NULL || sra->array.major_version >= 0) |
205 | printf(" Persistence : Superblock is %spersistent\n", | |
206 | array.not_persistent?"not ":""); | |
cd29a5c8 | 207 | printf("\n"); |
4027ddca NB |
208 | /* Only try GET_BITMAP_FILE for 0.90.01 and later */ |
209 | if (vers >= 9001 && | |
210 | ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && | |
211 | bmf.pathname[0]) { | |
8fac0577 NB |
212 | printf(" Intent Bitmap : %s\n", bmf.pathname); |
213 | printf("\n"); | |
214 | } else if (array.state & (1<<MD_SB_BITMAP_PRESENT)) | |
215 | printf(" Intent Bitmap : Internal\n\n"); | |
cd29a5c8 NB |
216 | atime = array.utime; |
217 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
120230a4 | 218 | printf(" State : %s%s%s%s\n", |
182661f4 | 219 | (array.state&(1<<MD_SB_CLEAN))?"clean":"active", |
dd0781e5 | 220 | array.active_disks < array.raid_disks? ", degraded":"", |
e5329c37 | 221 | (!e || e->percent < 0) ? "" : |
120230a4 NB |
222 | (e->resync) ? ", resyncing": ", recovering", |
223 | larray_size ? "": ", Not Started"); | |
b83d95f3 NB |
224 | printf(" Active Devices : %d\n", array.active_disks); |
225 | printf("Working Devices : %d\n", array.working_disks); | |
226 | printf(" Failed Devices : %d\n", array.failed_disks); | |
227 | printf(" Spare Devices : %d\n", array.spare_disks); | |
cd29a5c8 NB |
228 | printf("\n"); |
229 | if (array.level == 5) { | |
230 | c = map_num(r5layout, array.layout); | |
231 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
232 | } | |
e5329c37 | 233 | if (array.level == 10) { |
b578481c NB |
234 | printf(" Layout : near=%d, %s=%d\n", |
235 | array.layout&255, (array.layout&0x10000)?"offset":"far", | |
236 | (array.layout>>8)&255); | |
e5329c37 | 237 | } |
cd29a5c8 NB |
238 | switch (array.level) { |
239 | case 0: | |
240 | case 4: | |
241 | case 5: | |
e5329c37 NB |
242 | case 10: |
243 | case 6: | |
142cb9e1 NB |
244 | if (array.chunk_size) |
245 | printf(" Chunk Size : %dK\n\n", | |
246 | array.chunk_size/1024); | |
cd29a5c8 NB |
247 | break; |
248 | case -1: | |
e5329c37 | 249 | printf(" Rounding : %dK\n\n", array.chunk_size/1024); |
cd29a5c8 NB |
250 | break; |
251 | default: break; | |
252 | } | |
aba69144 | 253 | |
e5329c37 | 254 | if (e && e->percent >= 0) { |
bed256c2 | 255 | printf(" Re%s Status : %d%% complete\n", |
3da92f27 NB |
256 | (st && st->sb && info.reshape_active)? |
257 | "shape":"build", | |
bed256c2 | 258 | e->percent); |
e5329c37 NB |
259 | is_rebuilding = 1; |
260 | } | |
dd0781e5 NB |
261 | free_mdstat(ms); |
262 | ||
3da92f27 | 263 | if (st->sb && info.reshape_active) { |
bed256c2 NB |
264 | #if 0 |
265 | This is pretty boring | |
266 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info.reshape_progress<<9, | |
267 | human_size(info.reshape_progress<<9)); | |
268 | #endif | |
269 | if (info.delta_disks > 0) | |
270 | printf(" Delta Devices : %d, (%d->%d)\n", | |
271 | info.delta_disks, array.raid_disks - info.delta_disks, array.raid_disks); | |
272 | if (info.delta_disks < 0) | |
273 | printf(" Delta Devices : %d, (%d->%d)\n", | |
274 | info.delta_disks, array.raid_disks, array.raid_disks + info.delta_disks); | |
275 | if (info.new_level != array.level) { | |
276 | char *c = map_num(pers, info.new_level); | |
277 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
278 | } | |
279 | if (info.new_level != array.level || | |
280 | info.new_layout != array.layout) { | |
281 | if (info.new_level == 5) { | |
282 | char *c = map_num(r5layout, info.new_layout); | |
283 | printf(" New Layout : %s\n", | |
284 | c?c:"-unknown-"); | |
285 | } | |
286 | if (info.new_level == 10) { | |
b578481c | 287 | printf(" New Layout : near=%d, %s=%d\n", |
bed256c2 | 288 | info.new_layout&255, |
b578481c | 289 | (info.new_layout&0x10000)?"offset":"far", |
bed256c2 NB |
290 | (info.new_layout>>8)&255); |
291 | } | |
292 | } | |
293 | if (info.new_chunk != array.chunk_size) | |
294 | printf(" New Chunksize : %dK\n", info.new_chunk/1024); | |
295 | printf("\n"); | |
296 | } else if (e && e->percent >= 0) | |
297 | printf("\n"); | |
3da92f27 NB |
298 | if (st && st->sb) |
299 | st->ss->detail_super(st, homehost); | |
e5329c37 | 300 | |
b83d95f3 | 301 | printf(" Number Major Minor RaidDevice State\n"); |
cd29a5c8 | 302 | } |
b0c63f32 NB |
303 | disks = malloc(max_disks * sizeof(mdu_disk_info_t)); |
304 | for (d=0; d<max_disks; d++) { | |
305 | disks[d].state = (1<<MD_DISK_REMOVED); | |
306 | disks[d].major = disks[d].minor = 0; | |
8352ab3e | 307 | disks[d].number = disks[d].raid_disk = d; |
b0c63f32 NB |
308 | } |
309 | ||
310 | next = array.raid_disks; | |
311 | for (d=0; d < max_disks; d++) { | |
64c4757e NB |
312 | mdu_disk_info_t disk; |
313 | disk.number = d; | |
314 | if (ioctl(fd, GET_DISK_INFO, &disk) < 0) { | |
e0d19036 | 315 | if (d < array.raid_disks) |
b83d95f3 | 316 | fprintf(stderr, Name ": cannot get device detail for device %d: %s\n", |
e0d19036 | 317 | d, strerror(errno)); |
64c4757e NB |
318 | continue; |
319 | } | |
67687afe NB |
320 | if (disk.major == 0 && disk.minor == 0) |
321 | continue; | |
aba69144 | 322 | if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks) |
b0c63f32 NB |
323 | disks[disk.raid_disk] = disk; |
324 | else if (next < max_disks) | |
325 | disks[next++] = disk; | |
326 | } | |
327 | ||
a77be586 | 328 | avail = calloc(array.raid_disks, 1); |
b0c63f32 NB |
329 | for (d= 0; d < max_disks; d++) { |
330 | char *dv; | |
331 | mdu_disk_info_t disk = disks[d]; | |
332 | ||
e0d19036 NB |
333 | if (d >= array.raid_disks && |
334 | disk.major == 0 && | |
335 | disk.minor == 0) | |
336 | continue; | |
cd29a5c8 | 337 | if (!brief) { |
b0c63f32 | 338 | if (d == array.raid_disks) printf("\n"); |
e5329c37 | 339 | if (disk.raid_disk < 0) |
aba69144 | 340 | printf(" %5d %5d %5d - ", |
e5329c37 NB |
341 | disk.number, disk.major, disk.minor); |
342 | else | |
aba69144 | 343 | printf(" %5d %5d %5d %5d ", |
e5329c37 | 344 | disk.number, disk.major, disk.minor, disk.raid_disk); |
aba69144 NB |
345 | if (disk.state & (1<<MD_DISK_FAULTY)) { |
346 | printf(" faulty"); | |
e5329c37 NB |
347 | if (disk.raid_disk < array.raid_disks && |
348 | disk.raid_disk >= 0) | |
349 | failed++; | |
350 | } | |
cd29a5c8 NB |
351 | if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active"); |
352 | if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync"); | |
353 | if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed"); | |
b0c63f32 NB |
354 | if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly"); |
355 | if ((disk.state & | |
356 | ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED))) | |
357 | == 0) { | |
358 | printf(" spare"); | |
e5329c37 NB |
359 | if (is_26) { |
360 | if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0) | |
361 | printf(" rebuilding"); | |
362 | } else if (is_rebuilding && failed) { | |
363 | /* Taking a bit of a risk here, we remove the | |
364 | * device from the array, and then put it back. | |
365 | * If this fails, we are rebuilding | |
366 | */ | |
0df46c2a NB |
367 | int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor)); |
368 | if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor)); | |
e5329c37 NB |
369 | if (err && errno == EBUSY) |
370 | printf(" rebuilding"); | |
371 | } | |
372 | } | |
feb716e9 | 373 | } |
e5329c37 | 374 | if (disk.state == 0) spares++; |
a77be586 NB |
375 | if (test && d < array.raid_disks |
376 | && !(disk.state & (1<<MD_DISK_SYNC))) | |
feb716e9 | 377 | rv |= 1; |
a77be586 NB |
378 | if (d < array.raid_disks |
379 | && (disk.state & (1<<MD_DISK_SYNC))) { | |
380 | avail_disks ++; | |
381 | avail[d] = 1; | |
cd29a5c8 | 382 | } |
16c6fa80 | 383 | if ((dv=map_dev(disk.major, disk.minor, 0))) { |
d013a55e NB |
384 | if (brief) { |
385 | if (devices) { | |
386 | devices = realloc(devices, | |
387 | strlen(devices)+1+strlen(dv)+1); | |
388 | strcat(strcat(devices,","),dv); | |
389 | } else | |
390 | devices = strdup(dv); | |
391 | } else | |
392 | printf(" %s", dv); | |
82b27616 | 393 | } |
cd29a5c8 | 394 | if (!brief) printf("\n"); |
64c4757e | 395 | } |
feb716e9 | 396 | if (spares && brief) printf(" spares=%d", spares); |
3da92f27 NB |
397 | if (brief && st && st->sb) |
398 | st->ss->brief_detail_super(st); | |
399 | st->ss->free_super(st); | |
4b1ac34b | 400 | |
22892d56 | 401 | if (brief > 1 && devices) printf("\n devices=%s", devices); |
cd29a5c8 | 402 | if (brief) printf("\n"); |
a77be586 NB |
403 | if (test && |
404 | !enough(array.level, array.raid_disks, array.layout, | |
405 | 1, avail, avail_disks)) | |
406 | rv = 2; | |
407 | ||
a328c097 | 408 | out: |
e5329c37 | 409 | close(fd); |
feb716e9 | 410 | return rv; |
64c4757e | 411 | } |