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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 | * |
cd29a5c8 | 4 | * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au> |
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 | ||
feb716e9 | 34 | int Detail(char *dev, int brief, int test) |
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; |
ea329559 | 56 | int max_disks = MD_SB_DISKS; |
64c4757e | 57 | |
4b1ac34b | 58 | void *super = NULL; |
feb716e9 | 59 | int rv = test ? 4 : 1; |
82b27616 | 60 | |
64c4757e | 61 | if (fd < 0) { |
682c7051 | 62 | fprintf(stderr, Name ": cannot open %s: %s\n", |
64c4757e | 63 | dev, strerror(errno)); |
feb716e9 | 64 | return rv; |
64c4757e NB |
65 | } |
66 | vers = md_get_version(fd); | |
67 | if (vers < 0) { | |
682c7051 | 68 | fprintf(stderr, Name ": %s does not appear to be an md device\n", |
64c4757e NB |
69 | dev); |
70 | close(fd); | |
feb716e9 | 71 | return rv; |
64c4757e | 72 | } |
682c7051 NB |
73 | if (vers < 9000) { |
74 | fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n", | |
64c4757e NB |
75 | dev); |
76 | close(fd); | |
feb716e9 | 77 | return rv; |
64c4757e NB |
78 | } |
79 | if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { | |
80 | if (errno == ENODEV) | |
682c7051 | 81 | fprintf(stderr, Name ": md device %s does not appear to be active.\n", |
64c4757e NB |
82 | dev); |
83 | else | |
682c7051 | 84 | fprintf(stderr, Name ": cannot get array detail for %s: %s\n", |
64c4757e NB |
85 | dev, strerror(errno)); |
86 | close(fd); | |
feb716e9 | 87 | return rv; |
64c4757e | 88 | } |
82d9eba6 | 89 | st = super_by_version(array.major_version, array.minor_version); |
f9ce90ba | 90 | |
dd0781e5 NB |
91 | if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode)) |
92 | stb.st_rdev = 0; | |
feb716e9 | 93 | rv = 0; |
e5329c37 | 94 | |
ea329559 NB |
95 | if (st) max_disks = st->max_devs; |
96 | ||
e5329c37 | 97 | /* try to load a superblock */ |
ea329559 | 98 | for (d= 0; d<max_disks; d++) { |
e5329c37 NB |
99 | mdu_disk_info_t disk; |
100 | char *dv; | |
101 | disk.number = d; | |
102 | if (ioctl(fd, GET_DISK_INFO, &disk) < 0) | |
103 | continue; | |
104 | if (d >= array.raid_disks && | |
105 | disk.major == 0 && | |
106 | disk.minor == 0) | |
107 | continue; | |
108 | if ((dv=map_dev(disk.major, disk.minor))) { | |
4b1ac34b | 109 | if (!super && (disk.state & (1<<MD_DISK_ACTIVE))) { |
e5329c37 NB |
110 | /* try to read the superblock from this device |
111 | * to get more info | |
112 | */ | |
113 | int fd2 = open(dv, O_RDONLY); | |
82d9eba6 NB |
114 | if (fd2 >=0 && st && |
115 | st->ss->load_super(st, fd2, &super, NULL) == 0) { | |
4b1ac34b | 116 | struct mdinfo info; |
947fd4dd NB |
117 | struct mddev_ident_s ident; |
118 | st->ss->getinfo_super(&info, &ident, super); | |
4b1ac34b NB |
119 | if (info.array.ctime != array.ctime || |
120 | info.array.level != array.level) { | |
121 | free(super); | |
122 | super = NULL; | |
123 | } | |
124 | } | |
e5329c37 NB |
125 | if (fd2 >= 0) close(fd2); |
126 | } | |
127 | } | |
128 | } | |
129 | ||
64c4757e | 130 | /* Ok, we have some info to print... */ |
682c7051 | 131 | c = map_num(pers, array.level); |
cd29a5c8 | 132 | if (brief) |
b83d95f3 | 133 | printf("ARRAY %s level=%s num-devices=%d", dev, c?c:"-unknown-",array.raid_disks ); |
cd29a5c8 | 134 | else { |
e0d19036 NB |
135 | unsigned long array_size; |
136 | unsigned long long larray_size; | |
dd0781e5 NB |
137 | struct mdstat_ent *ms = mdstat_read(0); |
138 | struct mdstat_ent *e; | |
139 | int devnum = array.md_minor; | |
0df46c2a | 140 | if (major(stb.st_rdev) != MD_MAJOR) |
dd0781e5 NB |
141 | devnum = -1 - devnum; |
142 | ||
143 | for (e=ms; e; e=e->next) | |
144 | if (e->devnum == devnum) | |
145 | break; | |
11a3e71d | 146 | #ifdef BLKGETSIZE64 |
56eb10c0 NB |
147 | if (ioctl(fd, BLKGETSIZE64, &larray_size)==0) |
148 | ; | |
11a3e71d NB |
149 | else |
150 | #endif | |
b83d95f3 NB |
151 | if (ioctl(fd, BLKGETSIZE, &array_size)==0) { |
152 | larray_size = array_size; | |
153 | larray_size <<= 9; | |
154 | } | |
155 | ||
56eb10c0 NB |
156 | else larray_size = 0; |
157 | ||
cd29a5c8 NB |
158 | printf("%s:\n", dev); |
159 | printf(" Version : %02d.%02d.%02d\n", | |
160 | array.major_version, array.minor_version, array.patch_version); | |
161 | atime = array.ctime; | |
162 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
163 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
56eb10c0 | 164 | if (larray_size) |
dd0781e5 | 165 | printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size)); |
3d4064cc NB |
166 | if (array.level >= 1) { |
167 | if (array.major_version != 0 && | |
168 | larray_size >= 0xFFFFFFFFULL) | |
169 | printf(" Device Size : unknown\n"); | |
170 | else | |
171 | printf(" Device Size : %d%s\n", array.size, human_size((long long)array.size<<10)); | |
172 | } | |
b83d95f3 NB |
173 | printf(" Raid Devices : %d\n", array.raid_disks); |
174 | printf(" Total Devices : %d\n", array.nr_disks); | |
cd29a5c8 | 175 | printf("Preferred Minor : %d\n", array.md_minor); |
b83d95f3 | 176 | printf(" Persistence : Superblock is %spersistent\n", |
cd29a5c8 NB |
177 | array.not_persistent?"not ":""); |
178 | printf("\n"); | |
179 | atime = array.utime; | |
180 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
dd0781e5 | 181 | printf(" State : %s%s%s\n", |
182661f4 | 182 | (array.state&(1<<MD_SB_CLEAN))?"clean":"active", |
dd0781e5 | 183 | array.active_disks < array.raid_disks? ", degraded":"", |
e5329c37 NB |
184 | (!e || e->percent < 0) ? "" : |
185 | (e->resync) ? ", resyncing": ", recovering"); | |
b83d95f3 NB |
186 | printf(" Active Devices : %d\n", array.active_disks); |
187 | printf("Working Devices : %d\n", array.working_disks); | |
188 | printf(" Failed Devices : %d\n", array.failed_disks); | |
189 | printf(" Spare Devices : %d\n", array.spare_disks); | |
cd29a5c8 NB |
190 | printf("\n"); |
191 | if (array.level == 5) { | |
192 | c = map_num(r5layout, array.layout); | |
193 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
194 | } | |
e5329c37 NB |
195 | if (array.level == 10) { |
196 | printf(" Layout : near=%d, far=%d\n", | |
197 | array.layout&255, (array.layout>>8)&255); | |
198 | } | |
cd29a5c8 NB |
199 | switch (array.level) { |
200 | case 0: | |
201 | case 4: | |
202 | case 5: | |
e5329c37 NB |
203 | case 10: |
204 | case 6: | |
205 | printf(" Chunk Size : %dK\n\n", array.chunk_size/1024); | |
cd29a5c8 NB |
206 | break; |
207 | case -1: | |
e5329c37 | 208 | printf(" Rounding : %dK\n\n", array.chunk_size/1024); |
cd29a5c8 NB |
209 | break; |
210 | default: break; | |
211 | } | |
82b27616 | 212 | |
e5329c37 | 213 | if (e && e->percent >= 0) { |
dd0781e5 | 214 | printf(" Rebuild Status : %d%% complete\n\n", e->percent); |
e5329c37 NB |
215 | is_rebuilding = 1; |
216 | } | |
dd0781e5 NB |
217 | free_mdstat(ms); |
218 | ||
82d9eba6 NB |
219 | if (super && st) |
220 | st->ss->detail_super(super); | |
e5329c37 | 221 | |
b83d95f3 | 222 | printf(" Number Major Minor RaidDevice State\n"); |
cd29a5c8 | 223 | } |
b0c63f32 NB |
224 | disks = malloc(max_disks * sizeof(mdu_disk_info_t)); |
225 | for (d=0; d<max_disks; d++) { | |
226 | disks[d].state = (1<<MD_DISK_REMOVED); | |
227 | disks[d].major = disks[d].minor = 0; | |
228 | } | |
229 | ||
230 | next = array.raid_disks; | |
231 | for (d=0; d < max_disks; d++) { | |
64c4757e NB |
232 | mdu_disk_info_t disk; |
233 | disk.number = d; | |
234 | if (ioctl(fd, GET_DISK_INFO, &disk) < 0) { | |
e0d19036 | 235 | if (d < array.raid_disks) |
b83d95f3 | 236 | fprintf(stderr, Name ": cannot get device detail for device %d: %s\n", |
e0d19036 | 237 | d, strerror(errno)); |
64c4757e NB |
238 | continue; |
239 | } | |
67687afe NB |
240 | if (disk.major == 0 && disk.minor == 0) |
241 | continue; | |
b0c63f32 NB |
242 | if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks) |
243 | disks[disk.raid_disk] = disk; | |
244 | else if (next < max_disks) | |
245 | disks[next++] = disk; | |
246 | } | |
247 | ||
248 | for (d= 0; d < max_disks; d++) { | |
249 | char *dv; | |
250 | mdu_disk_info_t disk = disks[d]; | |
251 | ||
e0d19036 NB |
252 | if (d >= array.raid_disks && |
253 | disk.major == 0 && | |
254 | disk.minor == 0) | |
255 | continue; | |
cd29a5c8 | 256 | if (!brief) { |
b0c63f32 | 257 | if (d == array.raid_disks) printf("\n"); |
e5329c37 NB |
258 | if (disk.raid_disk < 0) |
259 | printf(" %5d %5d %5d - ", | |
260 | disk.number, disk.major, disk.minor); | |
261 | else | |
262 | printf(" %5d %5d %5d %5d ", | |
263 | disk.number, disk.major, disk.minor, disk.raid_disk); | |
264 | if (disk.state & (1<<MD_DISK_FAULTY)) { | |
265 | printf(" faulty"); | |
266 | if (disk.raid_disk < array.raid_disks && | |
267 | disk.raid_disk >= 0) | |
268 | failed++; | |
269 | } | |
cd29a5c8 NB |
270 | if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active"); |
271 | if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync"); | |
272 | if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed"); | |
b0c63f32 NB |
273 | if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly"); |
274 | if ((disk.state & | |
275 | ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED))) | |
276 | == 0) { | |
277 | printf(" spare"); | |
e5329c37 NB |
278 | if (is_26) { |
279 | if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0) | |
280 | printf(" rebuilding"); | |
281 | } else if (is_rebuilding && failed) { | |
282 | /* Taking a bit of a risk here, we remove the | |
283 | * device from the array, and then put it back. | |
284 | * If this fails, we are rebuilding | |
285 | */ | |
0df46c2a NB |
286 | int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor)); |
287 | if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor)); | |
e5329c37 NB |
288 | if (err && errno == EBUSY) |
289 | printf(" rebuilding"); | |
290 | } | |
291 | } | |
feb716e9 | 292 | } |
e5329c37 | 293 | if (disk.state == 0) spares++; |
feb716e9 NB |
294 | if (test && d < array.raid_disks && disk.state & (1<<MD_DISK_FAULTY)) { |
295 | if ((rv & 1) && (array.level ==4 || array.level == 5)) | |
296 | rv |= 2; | |
297 | rv |= 1; | |
cd29a5c8 | 298 | } |
82b27616 | 299 | if ((dv=map_dev(disk.major, disk.minor))) { |
d013a55e NB |
300 | if (brief) { |
301 | if (devices) { | |
302 | devices = realloc(devices, | |
303 | strlen(devices)+1+strlen(dv)+1); | |
304 | strcat(strcat(devices,","),dv); | |
305 | } else | |
306 | devices = strdup(dv); | |
307 | } else | |
308 | printf(" %s", dv); | |
82b27616 | 309 | } |
cd29a5c8 | 310 | if (!brief) printf("\n"); |
64c4757e | 311 | } |
feb716e9 | 312 | if (spares && brief) printf(" spares=%d", spares); |
82d9eba6 NB |
313 | if (super && brief && st) |
314 | st->ss->brief_detail_super(super); | |
4b1ac34b | 315 | |
22892d56 | 316 | if (brief > 1 && devices) printf("\n devices=%s", devices); |
cd29a5c8 | 317 | if (brief) printf("\n"); |
feb716e9 | 318 | if (test && (rv&2)) rv &= ~1; |
e5329c37 | 319 | close(fd); |
feb716e9 | 320 | return rv; |
64c4757e | 321 | } |