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/*
* mdctl - manage Linux "md" devices aka RAID arrays.
*
* Copyright (C) 2001 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 "mdctl.h"
#include "md_p.h"
#include "md_u.h"
int Detail(char *dev)
{
/*
* 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... */
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));
c = map_num(pers, array.level);
printf(" Raid Level : %s\n", c?c:"-unknown-");
printf(" Size : %d\n", array.size);
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<array.nr_disks; d++) {
mdu_disk_info_t disk;
char *dv;
disk.number = d;
if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
fprintf(stderr, Name ": cannot get disk detail for disk %d: %s\n",
d, strerror(errno));
continue;
}
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))) {
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;
}
}
printf("\n");
}
if (have_super) {
if (super.minor_version >= 90)
printf(" UUID : %08x:%08x:%08x:%08x\n", super.set_uuid0, super.set_uuid1,
super.set_uuid2, super.set_uuid3);
else
printf(" UUID : %08x\n", super.set_uuid0);
}
return 0;
}
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