mdadm raid1 creation problem --data

rrk <rrk@xxxxxxxxxxxxxxxxx> · Sat, 12 Jun 2004 02:04:47 -0500



why does it show 3 devices --- 2 active and 1 failed in the superblock info
this data was taken after i changed fstab & grub from /dev/md1 to /dev/hda1
and rebooted fsck ran on auto and no problem found


here is a dump of mdstat


Personalities : [raid1]
read_ahead 1024 sectors
md1 : active raid1 hdc1[1] hda1[0]
     10241280 blocks [2/2] [UU]


md5 : active raid1 hdc5[1] hda5[0]
     3220928 blocks [2/2] [UU]


md6 : active raid1 hdc6[1] hda6[0]
     5630656 blocks [2/2] [UU]


md8 : active raid1 hdc8[1] hda8[0]
     97795584 blocks [2/2] [UU]
*******************************************
fdisk data for hda & hdc


Disk /dev/hda: 120.0 GB, 120000000000 bytes
255 heads, 63 sectors/track, 14589 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes


  Device Boot    Start       End    Blocks   Id  System
/dev/hda1   *         1      1275  10241406   fd  Linux raid autodetect
/dev/hda2          1276     14589 106944705    5  Extended
/dev/hda5          1276      1676   3221001   fd  Linux raid autodetect
/dev/hda6          1677      2377   5630751   fd  Linux raid autodetect
/dev/hda7          2378      2414    297171   82  Linux swap
/dev/hda8          2415     14589  97795656   fd  Linux raid autodetect


superblock dump


root@stardoc_fs:/home/rob# mdadm -E /dev/hda1
/dev/hda1:
         Magic : a92b4efc
       Version : 00.90.00
          UUID : cdbefbc6:eae47c90:4bc54343:35b9dfcc
 Creation Time : Fri Jun 11 06:29:17 2004
    Raid Level : raid1
   Device Size : 10241280 (9.77 GiB 10.49 GB)
  Raid Devices : 2
 Total Devices : 3
Preferred Minor : 1


   Update Time : Fri Jun 11 01:17:41 2004
         State : dirty, no-errors
Active Devices : 2
Working Devices : 2
Failed Devices : 1
 Spare Devices : 0
      Checksum : 657d168b - correct
        Events : 0.23


     Number   Major   Minor   RaidDevice State
this     0       3        1        0      active sync   /dev/hda1
  0     0       3        1        0      active sync   /dev/hda1
  1     1      22        1        1      active sync   /dev/hdc1


root@stardoc_fs:/home/rob# mdadm -E /dev/hdc1
/dev/hdc1:
         Magic : a92b4efc
       Version : 00.90.00
          UUID : cdbefbc6:eae47c90:4bc54343:35b9dfcc
 Creation Time : Fri Jun 11 06:29:17 2004
    Raid Level : raid1
   Device Size : 10241280 (9.77 GiB 10.49 GB)
  Raid Devices : 2
 Total Devices : 3
Preferred Minor : 1


   Update Time : Fri Jun 11 01:17:41 2004
         State : dirty, no-errors
Active Devices : 2
Working Devices : 2
Failed Devices : 1
 Spare Devices : 0
      Checksum : 657d16a0 - correct
        Events : 0.23


     Number   Major   Minor   RaidDevice State
this     1      22        1        1      active sync   /dev/hdc1
  0     0       3        1        0      active sync   /dev/hda1
  1     1      22        1        1      active sync   /dev/hdc1


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