]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Detail.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
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 test
)
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
, 0);
43 mdu_array_info_t array
;
50 int is_26
= get_linux_version() >= 2006000;
51 int is_rebuilding
= 0;
56 int rv
= test
? 4 : 1;
59 fprintf(stderr
, Name
": cannot open %s: %s\n",
60 dev
, strerror(errno
));
63 vers
= md_get_version(fd
);
65 fprintf(stderr
, Name
": %s does not appear to be an md device\n",
71 fprintf(stderr
, Name
": cannot get detail for md device %s: driver version too old.\n",
76 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)<0) {
78 fprintf(stderr
, Name
": md device %s does not appear to be active.\n",
81 fprintf(stderr
, Name
": cannot get array detail for %s: %s\n",
82 dev
, strerror(errno
));
86 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
90 /* try to load a superblock */
91 for (d
= 0; d
<MD_SB_DISKS
; d
++) {
95 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0)
97 if (d
>= array
.raid_disks
&&
101 if ((dv
=map_dev(disk
.major
, disk
.minor
))) {
102 if (!have_super
&& (disk
.state
& (1<<MD_DISK_ACTIVE
))) {
103 /* try to read the superblock from this device
106 int fd2
= open(dv
, O_RDONLY
);
108 load_super(fd2
, &super
) ==0 &&
109 (unsigned long)super
.ctime
== (unsigned long)array
.ctime
&&
110 (unsigned int)super
.level
== (unsigned int)array
.level
)
112 if (fd2
>= 0) close(fd2
);
117 /* Ok, we have some info to print... */
118 c
= map_num(pers
, array
.level
);
120 printf("ARRAY %s level=%s num-devices=%d", dev
, c
?c
:"-unknown-",array
.raid_disks
);
122 unsigned long array_size
;
123 unsigned long long larray_size
;
124 struct mdstat_ent
*ms
= mdstat_read(0);
125 struct mdstat_ent
*e
;
126 int devnum
= array
.md_minor
;
127 if (MAJOR(stb
.st_rdev
) != MD_MAJOR
)
128 devnum
= -1 - devnum
;
130 for (e
=ms
; e
; e
=e
->next
)
131 if (e
->devnum
== devnum
)
134 if (ioctl(fd
, BLKGETSIZE64
, &larray_size
)==0)
138 if (ioctl(fd
, BLKGETSIZE
, &array_size
)==0) {
139 larray_size
= array_size
;
143 else larray_size
= 0;
145 printf("%s:\n", dev
);
146 printf(" Version : %02d.%02d.%02d\n",
147 array
.major_version
, array
.minor_version
, array
.patch_version
);
149 printf(" Creation Time : %.24s\n", ctime(&atime
));
150 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
152 printf(" Array Size : %llu%s\n", (larray_size
>>10), human_size(larray_size
));
153 if (array
.level
>= 1)
154 printf(" Device Size : %d%s\n", array
.size
, human_size((long long)array
.size
<<10));
155 printf(" Raid Devices : %d\n", array
.raid_disks
);
156 printf(" Total Devices : %d\n", array
.nr_disks
);
157 printf("Preferred Minor : %d\n", array
.md_minor
);
158 printf(" Persistence : Superblock is %spersistent\n",
159 array
.not_persistent
?"not ":"");
162 printf(" Update Time : %.24s\n", ctime(&atime
));
163 printf(" State : %s%s%s\n",
164 (array
.state
&(1<<MD_SB_CLEAN
))?"clean":"dirty",
165 array
.active_disks
< array
.raid_disks
? ", degraded":"",
166 (!e
|| e
->percent
< 0) ? "" :
167 (e
->resync
) ? ", resyncing": ", recovering");
168 printf(" Active Devices : %d\n", array
.active_disks
);
169 printf("Working Devices : %d\n", array
.working_disks
);
170 printf(" Failed Devices : %d\n", array
.failed_disks
);
171 printf(" Spare Devices : %d\n", array
.spare_disks
);
173 if (array
.level
== 5) {
174 c
= map_num(r5layout
, array
.layout
);
175 printf(" Layout : %s\n", c
?c
:"-unknown-");
177 if (array
.level
== 10) {
178 printf(" Layout : near=%d, far=%d\n",
179 array
.layout
&255, (array
.layout
>>8)&255);
181 switch (array
.level
) {
187 printf(" Chunk Size : %dK\n\n", array
.chunk_size
/1024);
190 printf(" Rounding : %dK\n\n", array
.chunk_size
/1024);
195 if (e
&& e
->percent
>= 0) {
196 printf(" Rebuild Status : %d%% complete\n\n", e
->percent
);
203 if (super
.minor_version
>= 90)
204 printf("%08x:%08x:%08x:%08x", super
.set_uuid0
, super
.set_uuid1
,
205 super
.set_uuid2
, super
.set_uuid3
);
207 printf("%08x", super
.set_uuid0
);
208 printf("\n Events : %d.%d\n\n", super
.events_hi
, super
.events_lo
);
211 printf(" Number Major Minor RaidDevice State\n");
213 for (d
= 0; d
<MD_SB_DISKS
; d
++) {
214 mdu_disk_info_t disk
;
217 if (ioctl(fd
, GET_DISK_INFO
, &disk
) < 0) {
218 if (d
< array
.raid_disks
)
219 fprintf(stderr
, Name
": cannot get device detail for device %d: %s\n",
223 if (d
>= array
.raid_disks
&&
228 if (disk
.number
== array
.raid_disks
) printf("\n");
229 if (disk
.raid_disk
< 0)
230 printf(" %5d %5d %5d - ",
231 disk
.number
, disk
.major
, disk
.minor
);
233 printf(" %5d %5d %5d %5d ",
234 disk
.number
, disk
.major
, disk
.minor
, disk
.raid_disk
);
235 if (disk
.state
& (1<<MD_DISK_FAULTY
)) {
237 if (disk
.raid_disk
< array
.raid_disks
&&
241 if (disk
.state
& (1<<MD_DISK_ACTIVE
)) printf(" active");
242 if (disk
.state
& (1<<MD_DISK_SYNC
)) printf(" sync");
243 if (disk
.state
& (1<<MD_DISK_REMOVED
)) printf(" removed");
244 if (disk
.state
== 0) printf(" spare");
245 if (disk
.state
== 0) {
247 if (disk
.raid_disk
< array
.raid_disks
&& disk
.raid_disk
>= 0)
248 printf(" rebuilding");
249 } else if (is_rebuilding
&& failed
) {
250 /* Taking a bit of a risk here, we remove the
251 * device from the array, and then put it back.
252 * If this fails, we are rebuilding
254 int err
= ioctl(fd
, HOT_REMOVE_DISK
, MKDEV(disk
.major
, disk
.minor
));
255 if (err
== 0) ioctl(fd
, HOT_ADD_DISK
, MKDEV(disk
.major
, disk
.minor
));
256 if (err
&& errno
== EBUSY
)
257 printf(" rebuilding");
261 if (disk
.state
== 0) spares
++;
262 if (test
&& d
< array
.raid_disks
&& disk
.state
& (1<<MD_DISK_FAULTY
)) {
263 if ((rv
& 1) && (array
.level
==4 || array
.level
== 5))
267 if ((dv
=map_dev(disk
.major
, disk
.minor
))) {
270 devices
= realloc(devices
,
271 strlen(devices
)+1+strlen(dv
)+1);
272 strcat(strcat(devices
,","),dv
);
274 devices
= strdup(dv
);
278 if (!brief
) printf("\n");
280 if (spares
&& brief
) printf(" spares=%d", spares
);
281 if (have_super
&& brief
) {
283 if (super
.minor_version
>= 90)
284 printf("%08x:%08x:%08x:%08x", super
.set_uuid0
, super
.set_uuid1
,
285 super
.set_uuid2
, super
.set_uuid3
);
287 printf("%08x", super
.set_uuid0
);
289 if (brief
&& devices
) printf("\n devices=%s", devices
);
290 if (brief
) printf("\n");
291 if (test
&& (rv
&2)) rv
&= ~1;