somthing wrong in raid5 or in mdadm

[Farkas Levente <lfarkas@xxxxxxxxx>]

hi,
we try to setup a new server but something is wrong with raid5. although 
we has a few other servers with raid 5 but this start to getting 
strange. just look at this:
-----------------------------------
# cat /proc/mdstat
Personalities : [raid1] [raid5]
read_ahead 1024 sectors
Event: 13
md0 : active raid1 hda2[0] hdc2[1]
      39097664 blocks [2/2] [UU]

md1 : active raid1 hda1[0] hdc1[1]
      1048704 blocks [2/2] [UU]

md2 : active raid5 sde1[7] sdf1[6] sdd1[3] sdc1[2] sdb1[1] sda1[0]
      720321792 blocks level 5, 128k chunk, algorithm 2 [7/5] [UUUU__U]

unused devices: <none>
# mdadm --detail /dev/md2
/dev/md2:
        Version : 00.90.00
  Creation Time : Mon May 24 18:41:31 2004
     Raid Level : raid5
     Array Size : 720321792 (686.95 GiB 737.61 GB)
    Device Size : 120053632 (114.49 GiB 122.93 GB)
   Raid Devices : 7
  Total Devices : 6
Preferred Minor : 2
    Persistence : Superblock is persistent

    Update Time : Mon May 31 15:37:36 2004
          State : dirty, no-errors
 Active Devices : 5
Working Devices : 6
 Failed Devices : 0
  Spare Devices : 1

         Layout : left-symmetric
     Chunk Size : 128K

    Number   Major   Minor   RaidDevice State
       0       8        1        0      active sync   /dev/sda1
       1       8       17        1      active sync   /dev/sdb1
       2       8       33        2      active sync   /dev/sdc1
       3       8       49        3      active sync   /dev/sdd1
       4       0        0        4      faulty removed
       5       0        0        5      faulty removed
       6       8       81        6      active sync   /dev/sdf1
       7       8       65        7      spare   /dev/sde1
           UUID : 7fda241f:5a683e6e:4f22e751:036cd66e
         Events : 0.217
# uname -a; mdadm -V
Linux kek.int.mkk.hu 2.4.21-15.EL.c0 #1 Thu May 13 04:18:33 BST 2004 
i686 i686 i386 GNU/Linux
mdadm - v1.5.0 - 22 Jan 2004
-----------------------------------
why the device is not started sync?
how can be an active "dirty, no-errors" raid 5 from 7 disk working with 
5 disks?
and I can even mount /dev/md2!
what can I do in this case?

another realy strange thing with mdadm at all reboot we've got a 
NewArray and a SparesMissing message for all raid device. why???
yours.

--
  Levente                               "Si vis pacem para bellum!"

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