Help - this doesn't look good...

[David Greaves <david@xxxxxxxxxxxx>]

Sigh,

I'm having what might be xfs/nfsd conflicts and thought I'd reboot into 
an old 2.6.6 kernel which used to be stable.

Of course it spotted the fd partitions and tried to start the array.
It failed (the old kernel didn't have a driver for the new controller so 
some devices were missing)

However when I came back to 2.6.9 I get the rather conflicting status 
shown below.

It already mounted (xfs) but I unmounted quite quickly.
Can this do any harm?

Should I leave it to complete?
Can I safely remount?

My worry is that the kernel and mdadm think all the devices are 'up' and 
so may write to them and upset the resync (I suspect it thinks /dev/sdf1 
is dirty since that wasn't there under 2.6.6)

cu:~# mdadm --detail /dev/md0
/dev/md0:
       Version : 00.90.01
 Creation Time : Sun Nov 21 21:36:49 2004
    Raid Level : raid5
    Array Size : 1225543680 (1168.77 GiB 1254.96 GB)
   Device Size : 245108736 (233.75 GiB 250.99 GB)
  Raid Devices : 6
 Total Devices : 7
Preferred Minor : 0
   Persistence : Superblock is persistent

   Update Time : Thu Nov 25 12:51:46 2004
         State : dirty, resyncing
Active Devices : 6
Working Devices : 7
Failed Devices : 0
 Spare Devices : 1

        Layout : left-symmetric
    Chunk Size : 4096K

Rebuild Status : 0% complete

          UUID : 44e121b0:6e3422b0:4d67f451:51df5ae0
        Events : 0.35500

   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       3       65        4      active sync   /dev/hdb1
      5       8       81        5      active sync   /dev/sdf1

      6       8       65        -      spare   /dev/sde1
cu:~#
cu:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid5] [raid6]
md0 : active raid5 sdf1[5] sde1[6] sdd1[3] sdc1[2] sdb1[1] sda1[0] hdb1[4]
     1225543680 blocks level 5, 4096k chunk, algorithm 2 [6/6] [UUUUUU]
     [>....................]  resync =  0.3% (905600/245108736) 
finish=304.3min speed=13369K/sec
unused devices: <none>

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