Detail.c

   1 /*
   2  * mdctl - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001 Neil Brown <neilb@cse.unsw.edu.au>
   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
  30 #include        "mdctl.h"
  31 #include        "md_p.h"
  32 #include        "md_u.h"
  33
  34 int Detail(char *dev)
  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;
  44         int d;
  45         time_t atime;
  46         char *c;
  47
  48         if (fd < 0) {
  49                 fprintf(stderr, Name ": cannot open %s: %s\n",
  50                         dev, strerror(errno));
  51                 return 1;
  52         }
  53         vers = md_get_version(fd);
  54         if (vers < 0) {
  55                 fprintf(stderr, Name ": %s does not appear to be an md device\n",
  56                         dev);
  57                 close(fd);
  58                 return 1;
  59         }
  60         if (vers < 9000) {
  61                 fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n",
  62                         dev);
  63                 close(fd);
  64                 return 1;
  65         }
  66         if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
  67                 if (errno == ENODEV)
  68                         fprintf(stderr, Name ": md device %s does not appear to be active.\n",
  69                                 dev);
  70                 else
  71                         fprintf(stderr, Name ": cannot get array detail for %s: %s\n",
  72                                 dev, strerror(errno));
  73                 close(fd);
  74                 return 1;
  75         }
  76         /* Ok, we have some info to print... */
  77         printf("%s:\n", dev);
  78         printf("        Version : %02d.%02d.%02d\n",
  79                array.major_version, array.minor_version, array.patch_version);
  80         atime = array.ctime;
  81         printf("  Creation Time : %.24s\n", ctime(&atime));
  82         c = map_num(pers, array.level);
  83         printf("     Raid Level : %s\n", c?c:"-unknown-");
  84         printf("           Size : %d\n", array.size);
  85         printf("     Raid Disks : %d\n", array.raid_disks);
  86         printf("    Total Disks : %d\n", array.nr_disks);
  87         printf("Preferred Minor : %d\n", array.md_minor);
  88         printf("    Persistance : Superblock is %spersistant\n",
  89                array.not_persistent?"not ":"");
  90         printf("\n");
  91         atime = array.utime;
  92         printf("    Update Time : %.24s\n", ctime(&atime));
  93         printf("          State : %s, %serrors\n",
  94                (array.state&(1<<MD_SB_CLEAN))?"clean":"dirty",
  95                (array.state&(1<<MD_SB_ERRORS))?"":"no-");
  96         printf("  Active Drives : %d\n", array.active_disks);
  97         printf(" Working Drives : %d\n", array.working_disks);
  98         printf("  Failed Drives : %d\n", array.failed_disks);
  99         printf("   Spare Drives : %d\n", array.spare_disks);
 100         printf("\n");
 101         if (array.level == 5) {
 102                 c = map_num(r5layout, array.layout);
 103                 printf("         Layout : %s\n", c?c:"-unknown-");
 104         }
 105         printf("     Chunk Size : %dK\n", array.chunk_size/1024);
 106         printf("\n");
 107         printf("    Number   Major   Minor   RaidDisk   State\n");
 108         for (d= 0; d<array.nr_disks; d++) {
 109                 mdu_disk_info_t disk;
 110                 disk.number = d;
 111                 if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
 112                         fprintf(stderr, Name ": cannot get disk detail for disk %d: %s\n",
 113                                 d, strerror(errno));
 114                         continue;
 115                 }
 116                 printf("   %5d   %5d    %5d    %5d     ",
 117                        disk.number, disk.major, disk.minor, disk.raid_disk);
 118                 if (disk.state & (1<<MD_DISK_FAULTY)) printf(" faulty");
 119                 if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
 120                 if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
 121                 if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
 122                 printf("\n");
 123         }
 124         return 0;
 125 }