]> git.ipfire.org Git - thirdparty/mdadm.git/blame - Detail.c
Fix printing of size of reiserfs filesystem.
[thirdparty/mdadm.git] / Detail.c
CommitLineData
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 34int 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 {
8fac0577 135 mdu_bitmap_file_t bmf;
e0d19036
NB
136 unsigned long array_size;
137 unsigned long long larray_size;
22a88995 138 struct mdstat_ent *ms = mdstat_read(0, 0);
dd0781e5
NB
139 struct mdstat_ent *e;
140 int devnum = array.md_minor;
0df46c2a 141 if (major(stb.st_rdev) != MD_MAJOR)
dd0781e5
NB
142 devnum = -1 - devnum;
143
144 for (e=ms; e; e=e->next)
145 if (e->devnum == devnum)
146 break;
11a3e71d 147#ifdef BLKGETSIZE64
56eb10c0
NB
148 if (ioctl(fd, BLKGETSIZE64, &larray_size)==0)
149 ;
11a3e71d
NB
150 else
151#endif
b83d95f3
NB
152 if (ioctl(fd, BLKGETSIZE, &array_size)==0) {
153 larray_size = array_size;
154 larray_size <<= 9;
155 }
156
56eb10c0
NB
157 else larray_size = 0;
158
cd29a5c8
NB
159 printf("%s:\n", dev);
160 printf(" Version : %02d.%02d.%02d\n",
161 array.major_version, array.minor_version, array.patch_version);
162 atime = array.ctime;
163 printf(" Creation Time : %.24s\n", ctime(&atime));
164 printf(" Raid Level : %s\n", c?c:"-unknown-");
56eb10c0 165 if (larray_size)
dd0781e5 166 printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size));
3d4064cc
NB
167 if (array.level >= 1) {
168 if (array.major_version != 0 &&
6ee5c05a
NB
169 (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
170 unsigned long long dsize = get_component_size(fd);
171 if (dsize > 0)
172 printf(" Device Size : %llu%s\n", dsize, human_size((long long)array.size<<10));
173 else
174 printf(" Device Size : unknown\n");
175 } else
3d4064cc
NB
176 printf(" Device Size : %d%s\n", array.size, human_size((long long)array.size<<10));
177 }
b83d95f3
NB
178 printf(" Raid Devices : %d\n", array.raid_disks);
179 printf(" Total Devices : %d\n", array.nr_disks);
cd29a5c8 180 printf("Preferred Minor : %d\n", array.md_minor);
b83d95f3 181 printf(" Persistence : Superblock is %spersistent\n",
cd29a5c8
NB
182 array.not_persistent?"not ":"");
183 printf("\n");
8fac0577
NB
184 if (ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
185 bmf.pathname[0]) {
186 printf(" Intent Bitmap : %s\n", bmf.pathname);
187 printf("\n");
188 } else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
189 printf(" Intent Bitmap : Internal\n\n");
cd29a5c8
NB
190 atime = array.utime;
191 printf(" Update Time : %.24s\n", ctime(&atime));
dd0781e5 192 printf(" State : %s%s%s\n",
182661f4 193 (array.state&(1<<MD_SB_CLEAN))?"clean":"active",
dd0781e5 194 array.active_disks < array.raid_disks? ", degraded":"",
e5329c37
NB
195 (!e || e->percent < 0) ? "" :
196 (e->resync) ? ", resyncing": ", recovering");
b83d95f3
NB
197 printf(" Active Devices : %d\n", array.active_disks);
198 printf("Working Devices : %d\n", array.working_disks);
199 printf(" Failed Devices : %d\n", array.failed_disks);
200 printf(" Spare Devices : %d\n", array.spare_disks);
cd29a5c8
NB
201 printf("\n");
202 if (array.level == 5) {
203 c = map_num(r5layout, array.layout);
204 printf(" Layout : %s\n", c?c:"-unknown-");
205 }
e5329c37
NB
206 if (array.level == 10) {
207 printf(" Layout : near=%d, far=%d\n",
208 array.layout&255, (array.layout>>8)&255);
209 }
cd29a5c8
NB
210 switch (array.level) {
211 case 0:
212 case 4:
213 case 5:
e5329c37
NB
214 case 10:
215 case 6:
216 printf(" Chunk Size : %dK\n\n", array.chunk_size/1024);
cd29a5c8
NB
217 break;
218 case -1:
e5329c37 219 printf(" Rounding : %dK\n\n", array.chunk_size/1024);
cd29a5c8
NB
220 break;
221 default: break;
222 }
82b27616 223
e5329c37 224 if (e && e->percent >= 0) {
dd0781e5 225 printf(" Rebuild Status : %d%% complete\n\n", e->percent);
e5329c37
NB
226 is_rebuilding = 1;
227 }
dd0781e5
NB
228 free_mdstat(ms);
229
82d9eba6
NB
230 if (super && st)
231 st->ss->detail_super(super);
e5329c37 232
b83d95f3 233 printf(" Number Major Minor RaidDevice State\n");
cd29a5c8 234 }
b0c63f32
NB
235 disks = malloc(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 }
240
241 next = array.raid_disks;
242 for (d=0; d < max_disks; d++) {
64c4757e
NB
243 mdu_disk_info_t disk;
244 disk.number = d;
245 if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
e0d19036 246 if (d < array.raid_disks)
b83d95f3 247 fprintf(stderr, Name ": cannot get device detail for device %d: %s\n",
e0d19036 248 d, strerror(errno));
64c4757e
NB
249 continue;
250 }
67687afe
NB
251 if (disk.major == 0 && disk.minor == 0)
252 continue;
b0c63f32
NB
253 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks)
254 disks[disk.raid_disk] = disk;
255 else if (next < max_disks)
256 disks[next++] = disk;
257 }
258
259 for (d= 0; d < max_disks; d++) {
260 char *dv;
261 mdu_disk_info_t disk = disks[d];
262
e0d19036
NB
263 if (d >= array.raid_disks &&
264 disk.major == 0 &&
265 disk.minor == 0)
266 continue;
cd29a5c8 267 if (!brief) {
b0c63f32 268 if (d == array.raid_disks) printf("\n");
e5329c37
NB
269 if (disk.raid_disk < 0)
270 printf(" %5d %5d %5d - ",
271 disk.number, disk.major, disk.minor);
272 else
273 printf(" %5d %5d %5d %5d ",
274 disk.number, disk.major, disk.minor, disk.raid_disk);
275 if (disk.state & (1<<MD_DISK_FAULTY)) {
276 printf(" faulty");
277 if (disk.raid_disk < array.raid_disks &&
278 disk.raid_disk >= 0)
279 failed++;
280 }
cd29a5c8
NB
281 if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
282 if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
283 if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
b0c63f32
NB
284 if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
285 if ((disk.state &
286 ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED)))
287 == 0) {
288 printf(" spare");
e5329c37
NB
289 if (is_26) {
290 if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
291 printf(" rebuilding");
292 } else if (is_rebuilding && failed) {
293 /* Taking a bit of a risk here, we remove the
294 * device from the array, and then put it back.
295 * If this fails, we are rebuilding
296 */
0df46c2a
NB
297 int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
298 if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
e5329c37
NB
299 if (err && errno == EBUSY)
300 printf(" rebuilding");
301 }
302 }
feb716e9 303 }
e5329c37 304 if (disk.state == 0) spares++;
feb716e9
NB
305 if (test && d < array.raid_disks && disk.state & (1<<MD_DISK_FAULTY)) {
306 if ((rv & 1) && (array.level ==4 || array.level == 5))
307 rv |= 2;
308 rv |= 1;
cd29a5c8 309 }
82b27616 310 if ((dv=map_dev(disk.major, disk.minor))) {
d013a55e
NB
311 if (brief) {
312 if (devices) {
313 devices = realloc(devices,
314 strlen(devices)+1+strlen(dv)+1);
315 strcat(strcat(devices,","),dv);
316 } else
317 devices = strdup(dv);
318 } else
319 printf(" %s", dv);
82b27616 320 }
cd29a5c8 321 if (!brief) printf("\n");
64c4757e 322 }
feb716e9 323 if (spares && brief) printf(" spares=%d", spares);
82d9eba6
NB
324 if (super && brief && st)
325 st->ss->brief_detail_super(super);
4b1ac34b 326
22892d56 327 if (brief > 1 && devices) printf("\n devices=%s", devices);
cd29a5c8 328 if (brief) printf("\n");
feb716e9 329 if (test && (rv&2)) rv &= ~1;
e5329c37 330 close(fd);
feb716e9 331 return rv;
64c4757e 332}