191 lines
5.6 KiB
C
191 lines
5.6 KiB
C
/*
|
|
* mdadm - manage Linux "md" devices aka RAID arrays.
|
|
*
|
|
* Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
|
|
*
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* Author: Neil Brown
|
|
* Email: <neilb@cse.unsw.edu.au>
|
|
* Paper: Neil Brown
|
|
* School of Computer Science and Engineering
|
|
* The University of New South Wales
|
|
* Sydney, 2052
|
|
* Australia
|
|
*/
|
|
|
|
#include "mdadm.h"
|
|
#include "md_p.h"
|
|
#include "md_u.h"
|
|
|
|
int Detail(char *dev, int brief)
|
|
{
|
|
/*
|
|
* Print out details for an md array by using
|
|
* GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
|
|
*/
|
|
|
|
int fd = open(dev, O_RDONLY, 0);
|
|
int vers;
|
|
mdu_array_info_t array;
|
|
int d;
|
|
time_t atime;
|
|
char *c;
|
|
|
|
mdp_super_t super;
|
|
int have_super = 0;
|
|
|
|
if (fd < 0) {
|
|
fprintf(stderr, Name ": cannot open %s: %s\n",
|
|
dev, strerror(errno));
|
|
return 1;
|
|
}
|
|
vers = md_get_version(fd);
|
|
if (vers < 0) {
|
|
fprintf(stderr, Name ": %s does not appear to be an md device\n",
|
|
dev);
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
if (vers < 9000) {
|
|
fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n",
|
|
dev);
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
|
|
if (errno == ENODEV)
|
|
fprintf(stderr, Name ": md device %s does not appear to be active.\n",
|
|
dev);
|
|
else
|
|
fprintf(stderr, Name ": cannot get array detail for %s: %s\n",
|
|
dev, strerror(errno));
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
/* Ok, we have some info to print... */
|
|
c = map_num(pers, array.level);
|
|
if (brief)
|
|
printf("ARRAY %s level=%s disks=%d", dev, c?c:"-unknown-",array.raid_disks );
|
|
else {
|
|
unsigned long array_size;
|
|
unsigned long long larray_size;
|
|
#ifdef BLKGETSIZE64
|
|
if (ioctl(fd, BLKGETSIZE64, &larray_size)==0)
|
|
;
|
|
else
|
|
#endif
|
|
if (ioctl(fd, BLKGETSIZE, &array_size)==0)
|
|
larray_size = array_size<<9;
|
|
else larray_size = 0;
|
|
|
|
printf("%s:\n", dev);
|
|
printf(" Version : %02d.%02d.%02d\n",
|
|
array.major_version, array.minor_version, array.patch_version);
|
|
atime = array.ctime;
|
|
printf(" Creation Time : %.24s\n", ctime(&atime));
|
|
printf(" Raid Level : %s\n", c?c:"-unknown-");
|
|
if (larray_size)
|
|
printf(" Array Size : %ld%s\n", (long)(larray_size>>10), human_size(larray_size));
|
|
if (array.level >= 1)
|
|
printf(" Device Size : %d%s\n", array.size, human_size((long long)array.size<<10));
|
|
printf(" Raid Disks : %d\n", array.raid_disks);
|
|
printf(" Total Disks : %d\n", array.nr_disks);
|
|
printf("Preferred Minor : %d\n", array.md_minor);
|
|
printf(" Persistance : Superblock is %spersistant\n",
|
|
array.not_persistent?"not ":"");
|
|
printf("\n");
|
|
atime = array.utime;
|
|
printf(" Update Time : %.24s\n", ctime(&atime));
|
|
printf(" State : %s, %serrors\n",
|
|
(array.state&(1<<MD_SB_CLEAN))?"clean":"dirty",
|
|
(array.state&(1<<MD_SB_ERRORS))?"":"no-");
|
|
printf(" Active Drives : %d\n", array.active_disks);
|
|
printf(" Working Drives : %d\n", array.working_disks);
|
|
printf(" Failed Drives : %d\n", array.failed_disks);
|
|
printf(" Spare Drives : %d\n", array.spare_disks);
|
|
printf("\n");
|
|
if (array.level == 5) {
|
|
c = map_num(r5layout, array.layout);
|
|
printf(" Layout : %s\n", c?c:"-unknown-");
|
|
}
|
|
switch (array.level) {
|
|
case 0:
|
|
case 4:
|
|
case 5:
|
|
printf(" Chunk Size : %dK\n", array.chunk_size/1024);
|
|
break;
|
|
case -1:
|
|
printf(" Rounding : %dK\n", array.chunk_size/1024);
|
|
break;
|
|
default: break;
|
|
}
|
|
|
|
printf("\n");
|
|
printf(" Number Major Minor RaidDisk State\n");
|
|
}
|
|
for (d= 0; d<MD_SB_DISKS; d++) {
|
|
mdu_disk_info_t disk;
|
|
char *dv;
|
|
disk.number = d;
|
|
if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
|
|
if (d < array.raid_disks)
|
|
fprintf(stderr, Name ": cannot get disk detail for disk %d: %s\n",
|
|
d, strerror(errno));
|
|
continue;
|
|
}
|
|
if (d >= array.raid_disks &&
|
|
disk.major == 0 &&
|
|
disk.minor == 0)
|
|
continue;
|
|
if (!brief) {
|
|
printf(" %5d %5d %5d %5d ",
|
|
disk.number, disk.major, disk.minor, disk.raid_disk);
|
|
if (disk.state & (1<<MD_DISK_FAULTY)) printf(" faulty");
|
|
if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
|
|
if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
|
|
if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
|
|
}
|
|
if ((dv=map_dev(disk.major, disk.minor))) {
|
|
if (!brief) printf(" %s", dv);
|
|
if (!have_super) {
|
|
/* try to read the superblock from this device
|
|
* to get more info
|
|
*/
|
|
int fd = open(dv, O_RDONLY);
|
|
if (fd >=0 &&
|
|
load_super(fd, &super) ==0 &&
|
|
super.ctime == array.ctime &&
|
|
super.level == array.level)
|
|
have_super = 1;
|
|
}
|
|
}
|
|
if (!brief) printf("\n");
|
|
}
|
|
if (have_super) {
|
|
if (brief) printf(" UUID=");
|
|
else printf(" UUID : ");
|
|
if (super.minor_version >= 90)
|
|
printf("%08x:%08x:%08x:%08x", super.set_uuid0, super.set_uuid1,
|
|
super.set_uuid2, super.set_uuid3);
|
|
else
|
|
printf("%08x", super.set_uuid0);
|
|
if (!brief) printf("\n");
|
|
}
|
|
if (brief) printf("\n");
|
|
return 0;
|
|
}
|