2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
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.
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.
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
22 * Email: <neilb@cse.unsw.edu.au>
24 * School of Computer Science and Engineering
25 * The University of New South Wales
34 int Detail(char *dev, int brief, int export, int test, char *homehost)
37 * Print out details for an md array by using
38 * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
41 int fd = open(dev, O_RDONLY);
43 mdu_array_info_t array;
44 mdu_disk_info_t *disks;
52 int is_26 = get_linux_version() >= 2006000;
53 int is_rebuilding = 0;
55 struct supertype *st = NULL;
56 int max_disks = MD_SB_DISKS; /* just a default */
60 int rv = test ? 4 : 1;
65 fprintf(stderr, Name ": cannot open %s: %s\n",
66 dev, strerror(errno));
69 vers = md_get_version(fd);
71 fprintf(stderr, Name ": %s does not appear to be an md device\n",
77 fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n",
82 if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
84 fprintf(stderr, Name ": md device %s does not appear to be active.\n",
87 fprintf(stderr, Name ": cannot get array detail for %s: %s\n",
88 dev, strerror(errno));
92 sra = sysfs_read(fd, 0, GET_VERSION);
95 if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
99 if (st) max_disks = st->max_devs;
101 /* try to load a superblock */
102 for (d= 0; d<max_disks; d++) {
103 mdu_disk_info_t disk;
106 if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
108 if (d >= array.raid_disks &&
112 if ((dv=map_dev(disk.major, disk.minor, 1))) {
113 if ((!st || !st->sb) &&
114 (disk.state & (1<<MD_DISK_ACTIVE))) {
115 /* try to read the superblock from this device
118 int fd2 = dev_open(dv, O_RDONLY);
120 st->ss->load_super(st, fd2, NULL) == 0) {
121 st->ss->getinfo_super(st, &info);
122 if (info.array.ctime != array.ctime ||
123 info.array.level != array.level)
124 st->ss->free_super(st);
126 if (fd2 >= 0) close(fd2);
131 /* Ok, we have some info to print... */
132 c = map_num(pers, array.level);
136 printf("MD_LEVEL=%s\n", c);
137 printf("MD_DEVICES=%d\n", array.raid_disks);
138 if (sra && sra->array.major_version < 0)
139 printf("MD_METADATA=%s\n", sra->text_version);
141 printf("MD_METADATA=%d.%02d\n",
142 array.major_version, array.minor_version);
145 st->ss->export_detail_super(st);
150 mdu_bitmap_file_t bmf;
151 printf("ARRAY %s level=%s num-devices=%d", dev,
154 if (sra && sra->array.major_version < 0)
155 printf(" metadata=%s", sra->text_version);
157 printf(" metadata=%d.%02d",
158 array.major_version, array.minor_version);
160 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
162 ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
164 printf(" bitmap=%s", bmf.pathname);
167 mdu_bitmap_file_t bmf;
168 unsigned long long larray_size;
169 struct mdstat_ent *ms = mdstat_read(0, 0);
170 struct mdstat_ent *e;
171 int devnum = array.md_minor;
172 if (major(stb.st_rdev) == get_mdp_major())
173 devnum = -1 - devnum;
175 for (e=ms; e; e=e->next)
176 if (e->devnum == devnum)
178 if (!get_dev_size(fd, NULL, &larray_size))
181 printf("%s:\n", dev);
183 if (sra && sra->array.major_version < 0)
184 printf(" Version : %s\n", sra->text_version);
186 printf(" Version : %d.%02d\n",
187 array.major_version, array.minor_version);
190 printf(" Creation Time : %.24s\n", ctime(&atime));
191 if (array.raid_disks == 0) c = "container";
192 printf(" Raid Level : %s\n", c?c:"-unknown-");
194 printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size));
195 if (array.level >= 1) {
196 if (array.major_version != 0 &&
197 (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
198 unsigned long long dsize = get_component_size(fd);
200 printf(" Used Dev Size : %llu%s\n",
202 human_size((long long)dsize<<9));
204 printf(" Used Dev Size : unknown\n");
206 printf(" Used Dev Size : %d%s\n", array.size,
207 human_size((long long)array.size<<10));
209 printf(" Raid Devices : %d\n", array.raid_disks);
210 printf(" Total Devices : %d\n", array.nr_disks);
211 printf("Preferred Minor : %d\n", array.md_minor);
212 if (sra == NULL || sra->array.major_version >= 0)
213 printf(" Persistence : Superblock is %spersistent\n",
214 array.not_persistent?"not ":"");
216 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
218 ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
220 printf(" Intent Bitmap : %s\n", bmf.pathname);
222 } else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
223 printf(" Intent Bitmap : Internal\n\n");
225 printf(" Update Time : %.24s\n", ctime(&atime));
226 printf(" State : %s%s%s%s\n",
227 (array.state&(1<<MD_SB_CLEAN))?"clean":"active",
228 array.active_disks < array.raid_disks? ", degraded":"",
229 (!e || e->percent < 0) ? "" :
230 (e->resync) ? ", resyncing": ", recovering",
231 larray_size ? "": ", Not Started");
232 printf(" Active Devices : %d\n", array.active_disks);
233 printf("Working Devices : %d\n", array.working_disks);
234 printf(" Failed Devices : %d\n", array.failed_disks);
235 printf(" Spare Devices : %d\n", array.spare_disks);
237 if (array.level == 5) {
238 c = map_num(r5layout, array.layout);
239 printf(" Layout : %s\n", c?c:"-unknown-");
241 if (array.level == 10) {
243 print_r10_layout(array.layout);
246 switch (array.level) {
252 if (array.chunk_size)
253 printf(" Chunk Size : %dK\n\n",
254 array.chunk_size/1024);
257 printf(" Rounding : %dK\n\n", array.chunk_size/1024);
262 if (e && e->percent >= 0) {
263 printf(" Re%s Status : %d%% complete\n",
264 (st && st->sb && info.reshape_active)?
271 if (st->sb && info.reshape_active) {
273 This is pretty boring
274 printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info.reshape_progress<<9,
275 human_size(info.reshape_progress<<9));
277 if (info.delta_disks > 0)
278 printf(" Delta Devices : %d, (%d->%d)\n",
279 info.delta_disks, array.raid_disks - info.delta_disks, array.raid_disks);
280 if (info.delta_disks < 0)
281 printf(" Delta Devices : %d, (%d->%d)\n",
282 info.delta_disks, array.raid_disks, array.raid_disks + info.delta_disks);
283 if (info.new_level != array.level) {
284 char *c = map_num(pers, info.new_level);
285 printf(" New Level : %s\n", c?c:"-unknown-");
287 if (info.new_level != array.level ||
288 info.new_layout != array.layout) {
289 if (info.new_level == 5) {
290 char *c = map_num(r5layout, info.new_layout);
291 printf(" New Layout : %s\n",
294 if (info.new_level == 10) {
295 printf(" New Layout : near=%d, %s=%d\n",
297 (info.new_layout&0x10000)?"offset":"far",
298 (info.new_layout>>8)&255);
301 if (info.new_chunk != array.chunk_size)
302 printf(" New Chunksize : %dK\n", info.new_chunk/1024);
304 } else if (e && e->percent >= 0)
307 st->ss->detail_super(st, homehost);
309 printf(" Number Major Minor RaidDevice State\n");
311 disks = malloc(max_disks * sizeof(mdu_disk_info_t));
312 for (d=0; d<max_disks; d++) {
313 disks[d].state = (1<<MD_DISK_REMOVED);
314 disks[d].major = disks[d].minor = 0;
315 disks[d].number = disks[d].raid_disk = d;
318 next = array.raid_disks;
319 for (d=0; d < max_disks; d++) {
320 mdu_disk_info_t disk;
322 if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
323 if (d < array.raid_disks)
324 fprintf(stderr, Name ": cannot get device detail for device %d: %s\n",
328 if (disk.major == 0 && disk.minor == 0)
330 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks)
331 disks[disk.raid_disk] = disk;
332 else if (next < max_disks)
333 disks[next++] = disk;
336 avail = calloc(array.raid_disks, 1);
337 for (d= 0; d < max_disks; d++) {
339 mdu_disk_info_t disk = disks[d];
341 if (d >= array.raid_disks &&
346 if (d == array.raid_disks) printf("\n");
347 if (disk.raid_disk < 0)
348 printf(" %5d %5d %5d - ",
349 disk.number, disk.major, disk.minor);
351 printf(" %5d %5d %5d %5d ",
352 disk.number, disk.major, disk.minor, disk.raid_disk);
353 if (disk.state & (1<<MD_DISK_FAULTY)) {
355 if (disk.raid_disk < array.raid_disks &&
359 if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
360 if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
361 if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
362 if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
364 ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED)))
368 if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
369 printf(" rebuilding");
370 } else if (is_rebuilding && failed) {
371 /* Taking a bit of a risk here, we remove the
372 * device from the array, and then put it back.
373 * If this fails, we are rebuilding
375 int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
376 if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
377 if (err && errno == EBUSY)
378 printf(" rebuilding");
382 if (disk.state == 0) spares++;
383 if (test && d < array.raid_disks
384 && !(disk.state & (1<<MD_DISK_SYNC)))
386 if (d < array.raid_disks
387 && (disk.state & (1<<MD_DISK_SYNC))) {
391 if ((dv=map_dev(disk.major, disk.minor, 0))) {
394 devices = realloc(devices,
395 strlen(devices)+1+strlen(dv)+1);
396 strcat(strcat(devices,","),dv);
398 devices = strdup(dv);
402 if (!brief) printf("\n");
404 if (spares && brief) printf(" spares=%d", spares);
405 if (brief && st && st->sb)
406 st->ss->brief_detail_super(st);
407 st->ss->free_super(st);
409 if (brief > 1 && devices) printf("\n devices=%s", devices);
410 if (brief) printf("\n");
412 !enough(array.level, array.raid_disks, array.layout,
413 1, avail, avail_disks))