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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; |
64c4757e | 58 | |
4b1ac34b | 59 | void *super = NULL; |
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 | } |
82d9eba6 | 92 | st = super_by_version(array.major_version, array.minor_version); |
f9ce90ba | 93 | |
dd0781e5 NB |
94 | if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode)) |
95 | stb.st_rdev = 0; | |
feb716e9 | 96 | rv = 0; |
e5329c37 | 97 | |
ea329559 NB |
98 | if (st) max_disks = st->max_devs; |
99 | ||
e5329c37 | 100 | /* try to load a superblock */ |
ea329559 | 101 | for (d= 0; d<max_disks; d++) { |
e5329c37 NB |
102 | mdu_disk_info_t disk; |
103 | char *dv; | |
104 | disk.number = d; | |
105 | if (ioctl(fd, GET_DISK_INFO, &disk) < 0) | |
106 | continue; | |
107 | if (d >= array.raid_disks && | |
108 | disk.major == 0 && | |
109 | disk.minor == 0) | |
110 | continue; | |
16c6fa80 | 111 | if ((dv=map_dev(disk.major, disk.minor, 1))) { |
4b1ac34b | 112 | if (!super && (disk.state & (1<<MD_DISK_ACTIVE))) { |
e5329c37 NB |
113 | /* try to read the superblock from this device |
114 | * to get more info | |
115 | */ | |
16c6fa80 | 116 | int fd2 = dev_open(dv, O_RDONLY); |
82d9eba6 NB |
117 | if (fd2 >=0 && st && |
118 | st->ss->load_super(st, fd2, &super, NULL) == 0) { | |
31317663 | 119 | st->ss->getinfo_super(&info, super); |
4b1ac34b NB |
120 | if (info.array.ctime != array.ctime || |
121 | info.array.level != array.level) { | |
122 | free(super); | |
123 | super = NULL; | |
124 | } | |
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); | |
138 | printf("MD_METADATA=%d.%d\n", array.major_version, | |
139 | array.minor_version); | |
9bbcc5f7 TW |
140 | if (super) |
141 | st->ss->export_super(super); | |
54bad364 KS |
142 | goto out; |
143 | } | |
144 | ||
145 | if (brief) | |
b83d95f3 | 146 | printf("ARRAY %s level=%s num-devices=%d", dev, c?c:"-unknown-",array.raid_disks ); |
cd29a5c8 | 147 | else { |
8fac0577 | 148 | mdu_bitmap_file_t bmf; |
e0d19036 | 149 | unsigned long long larray_size; |
22a88995 | 150 | struct mdstat_ent *ms = mdstat_read(0, 0); |
dd0781e5 NB |
151 | struct mdstat_ent *e; |
152 | int devnum = array.md_minor; | |
0df46c2a | 153 | if (major(stb.st_rdev) != MD_MAJOR) |
dd0781e5 NB |
154 | devnum = -1 - devnum; |
155 | ||
156 | for (e=ms; e; e=e->next) | |
157 | if (e->devnum == devnum) | |
158 | break; | |
beae1dfe NB |
159 | if (!get_dev_size(fd, NULL, &larray_size)) |
160 | larray_size = 0; | |
56eb10c0 | 161 | |
cd29a5c8 NB |
162 | printf("%s:\n", dev); |
163 | printf(" Version : %02d.%02d.%02d\n", | |
164 | array.major_version, array.minor_version, array.patch_version); | |
165 | atime = array.ctime; | |
166 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
167 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
56eb10c0 | 168 | if (larray_size) |
dd0781e5 | 169 | printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size)); |
3d4064cc NB |
170 | if (array.level >= 1) { |
171 | if (array.major_version != 0 && | |
6ee5c05a NB |
172 | (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) { |
173 | unsigned long long dsize = get_component_size(fd); | |
174 | if (dsize > 0) | |
e3362544 NB |
175 | printf(" Used Dev Size : %llu%s\n", |
176 | dsize, | |
177 | human_size((long long)array.size<<10)); | |
6ee5c05a | 178 | else |
e3362544 | 179 | printf(" Used Dev Size : unknown\n"); |
6ee5c05a | 180 | } else |
e3362544 NB |
181 | printf(" Used Dev Size : %d%s\n", array.size, |
182 | human_size((long long)array.size<<10)); | |
3d4064cc | 183 | } |
b83d95f3 NB |
184 | printf(" Raid Devices : %d\n", array.raid_disks); |
185 | printf(" Total Devices : %d\n", array.nr_disks); | |
cd29a5c8 | 186 | printf("Preferred Minor : %d\n", array.md_minor); |
b83d95f3 | 187 | printf(" Persistence : Superblock is %spersistent\n", |
cd29a5c8 NB |
188 | array.not_persistent?"not ":""); |
189 | printf("\n"); | |
4027ddca NB |
190 | /* Only try GET_BITMAP_FILE for 0.90.01 and later */ |
191 | if (vers >= 9001 && | |
192 | ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && | |
193 | bmf.pathname[0]) { | |
8fac0577 NB |
194 | printf(" Intent Bitmap : %s\n", bmf.pathname); |
195 | printf("\n"); | |
196 | } else if (array.state & (1<<MD_SB_BITMAP_PRESENT)) | |
197 | printf(" Intent Bitmap : Internal\n\n"); | |
cd29a5c8 NB |
198 | atime = array.utime; |
199 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
120230a4 | 200 | printf(" State : %s%s%s%s\n", |
182661f4 | 201 | (array.state&(1<<MD_SB_CLEAN))?"clean":"active", |
dd0781e5 | 202 | array.active_disks < array.raid_disks? ", degraded":"", |
e5329c37 | 203 | (!e || e->percent < 0) ? "" : |
120230a4 NB |
204 | (e->resync) ? ", resyncing": ", recovering", |
205 | larray_size ? "": ", Not Started"); | |
b83d95f3 NB |
206 | printf(" Active Devices : %d\n", array.active_disks); |
207 | printf("Working Devices : %d\n", array.working_disks); | |
208 | printf(" Failed Devices : %d\n", array.failed_disks); | |
209 | printf(" Spare Devices : %d\n", array.spare_disks); | |
cd29a5c8 NB |
210 | printf("\n"); |
211 | if (array.level == 5) { | |
212 | c = map_num(r5layout, array.layout); | |
213 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
214 | } | |
e5329c37 | 215 | if (array.level == 10) { |
b578481c NB |
216 | printf(" Layout : near=%d, %s=%d\n", |
217 | array.layout&255, (array.layout&0x10000)?"offset":"far", | |
218 | (array.layout>>8)&255); | |
e5329c37 | 219 | } |
cd29a5c8 NB |
220 | switch (array.level) { |
221 | case 0: | |
222 | case 4: | |
223 | case 5: | |
e5329c37 NB |
224 | case 10: |
225 | case 6: | |
226 | printf(" Chunk Size : %dK\n\n", array.chunk_size/1024); | |
cd29a5c8 NB |
227 | break; |
228 | case -1: | |
e5329c37 | 229 | printf(" Rounding : %dK\n\n", array.chunk_size/1024); |
cd29a5c8 NB |
230 | break; |
231 | default: break; | |
232 | } | |
82b27616 | 233 | |
e5329c37 | 234 | if (e && e->percent >= 0) { |
bed256c2 NB |
235 | printf(" Re%s Status : %d%% complete\n", |
236 | (super && info.reshape_active)? "shape":"build", | |
237 | e->percent); | |
e5329c37 NB |
238 | is_rebuilding = 1; |
239 | } | |
dd0781e5 NB |
240 | free_mdstat(ms); |
241 | ||
bed256c2 NB |
242 | if (super && info.reshape_active) { |
243 | #if 0 | |
244 | This is pretty boring | |
245 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info.reshape_progress<<9, | |
246 | human_size(info.reshape_progress<<9)); | |
247 | #endif | |
248 | if (info.delta_disks > 0) | |
249 | printf(" Delta Devices : %d, (%d->%d)\n", | |
250 | info.delta_disks, array.raid_disks - info.delta_disks, array.raid_disks); | |
251 | if (info.delta_disks < 0) | |
252 | printf(" Delta Devices : %d, (%d->%d)\n", | |
253 | info.delta_disks, array.raid_disks, array.raid_disks + info.delta_disks); | |
254 | if (info.new_level != array.level) { | |
255 | char *c = map_num(pers, info.new_level); | |
256 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
257 | } | |
258 | if (info.new_level != array.level || | |
259 | info.new_layout != array.layout) { | |
260 | if (info.new_level == 5) { | |
261 | char *c = map_num(r5layout, info.new_layout); | |
262 | printf(" New Layout : %s\n", | |
263 | c?c:"-unknown-"); | |
264 | } | |
265 | if (info.new_level == 10) { | |
b578481c | 266 | printf(" New Layout : near=%d, %s=%d\n", |
bed256c2 | 267 | info.new_layout&255, |
b578481c | 268 | (info.new_layout&0x10000)?"offset":"far", |
bed256c2 NB |
269 | (info.new_layout>>8)&255); |
270 | } | |
271 | } | |
272 | if (info.new_chunk != array.chunk_size) | |
273 | printf(" New Chunksize : %dK\n", info.new_chunk/1024); | |
274 | printf("\n"); | |
275 | } else if (e && e->percent >= 0) | |
276 | printf("\n"); | |
82d9eba6 | 277 | if (super && st) |
b6750aa8 | 278 | st->ss->detail_super(super, homehost); |
e5329c37 | 279 | |
b83d95f3 | 280 | printf(" Number Major Minor RaidDevice State\n"); |
cd29a5c8 | 281 | } |
b0c63f32 NB |
282 | disks = malloc(max_disks * sizeof(mdu_disk_info_t)); |
283 | for (d=0; d<max_disks; d++) { | |
284 | disks[d].state = (1<<MD_DISK_REMOVED); | |
285 | disks[d].major = disks[d].minor = 0; | |
8352ab3e | 286 | disks[d].number = disks[d].raid_disk = d; |
b0c63f32 NB |
287 | } |
288 | ||
289 | next = array.raid_disks; | |
290 | for (d=0; d < max_disks; d++) { | |
64c4757e NB |
291 | mdu_disk_info_t disk; |
292 | disk.number = d; | |
293 | if (ioctl(fd, GET_DISK_INFO, &disk) < 0) { | |
e0d19036 | 294 | if (d < array.raid_disks) |
b83d95f3 | 295 | fprintf(stderr, Name ": cannot get device detail for device %d: %s\n", |
e0d19036 | 296 | d, strerror(errno)); |
64c4757e NB |
297 | continue; |
298 | } | |
67687afe NB |
299 | if (disk.major == 0 && disk.minor == 0) |
300 | continue; | |
b0c63f32 NB |
301 | if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks) |
302 | disks[disk.raid_disk] = disk; | |
303 | else if (next < max_disks) | |
304 | disks[next++] = disk; | |
305 | } | |
306 | ||
a77be586 | 307 | avail = calloc(array.raid_disks, 1); |
b0c63f32 NB |
308 | for (d= 0; d < max_disks; d++) { |
309 | char *dv; | |
310 | mdu_disk_info_t disk = disks[d]; | |
311 | ||
e0d19036 NB |
312 | if (d >= array.raid_disks && |
313 | disk.major == 0 && | |
314 | disk.minor == 0) | |
315 | continue; | |
cd29a5c8 | 316 | if (!brief) { |
b0c63f32 | 317 | if (d == array.raid_disks) printf("\n"); |
e5329c37 NB |
318 | if (disk.raid_disk < 0) |
319 | printf(" %5d %5d %5d - ", | |
320 | disk.number, disk.major, disk.minor); | |
321 | else | |
322 | printf(" %5d %5d %5d %5d ", | |
323 | disk.number, disk.major, disk.minor, disk.raid_disk); | |
324 | if (disk.state & (1<<MD_DISK_FAULTY)) { | |
325 | printf(" faulty"); | |
326 | if (disk.raid_disk < array.raid_disks && | |
327 | disk.raid_disk >= 0) | |
328 | failed++; | |
329 | } | |
cd29a5c8 NB |
330 | if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active"); |
331 | if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync"); | |
332 | if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed"); | |
b0c63f32 NB |
333 | if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly"); |
334 | if ((disk.state & | |
335 | ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED))) | |
336 | == 0) { | |
337 | printf(" spare"); | |
e5329c37 NB |
338 | if (is_26) { |
339 | if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0) | |
340 | printf(" rebuilding"); | |
341 | } else if (is_rebuilding && failed) { | |
342 | /* Taking a bit of a risk here, we remove the | |
343 | * device from the array, and then put it back. | |
344 | * If this fails, we are rebuilding | |
345 | */ | |
0df46c2a NB |
346 | int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor)); |
347 | if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor)); | |
e5329c37 NB |
348 | if (err && errno == EBUSY) |
349 | printf(" rebuilding"); | |
350 | } | |
351 | } | |
feb716e9 | 352 | } |
e5329c37 | 353 | if (disk.state == 0) spares++; |
a77be586 NB |
354 | if (test && d < array.raid_disks |
355 | && !(disk.state & (1<<MD_DISK_SYNC))) | |
feb716e9 | 356 | rv |= 1; |
a77be586 NB |
357 | if (d < array.raid_disks |
358 | && (disk.state & (1<<MD_DISK_SYNC))) { | |
359 | avail_disks ++; | |
360 | avail[d] = 1; | |
cd29a5c8 | 361 | } |
16c6fa80 | 362 | if ((dv=map_dev(disk.major, disk.minor, 0))) { |
d013a55e NB |
363 | if (brief) { |
364 | if (devices) { | |
365 | devices = realloc(devices, | |
366 | strlen(devices)+1+strlen(dv)+1); | |
367 | strcat(strcat(devices,","),dv); | |
368 | } else | |
369 | devices = strdup(dv); | |
370 | } else | |
371 | printf(" %s", dv); | |
82b27616 | 372 | } |
cd29a5c8 | 373 | if (!brief) printf("\n"); |
64c4757e | 374 | } |
feb716e9 | 375 | if (spares && brief) printf(" spares=%d", spares); |
82d9eba6 NB |
376 | if (super && brief && st) |
377 | st->ss->brief_detail_super(super); | |
4b1ac34b | 378 | |
22892d56 | 379 | if (brief > 1 && devices) printf("\n devices=%s", devices); |
cd29a5c8 | 380 | if (brief) printf("\n"); |
a77be586 NB |
381 | if (test && |
382 | !enough(array.level, array.raid_disks, array.layout, | |
383 | 1, avail, avail_disks)) | |
384 | rv = 2; | |
385 | ||
a328c097 | 386 | out: |
e5329c37 | 387 | close(fd); |
feb716e9 | 388 | return rv; |
64c4757e | 389 | } |