Re: /dev/md0 don't start after controller change

["Andrea Ganduglia" <nonews.org@gmail.com>]

On 12/7/06, michael <michael@estone.ca> wrote:
> On Thu, 7 Dec 2006 12:25:40 +0100, Andrea Ganduglia wrote
> >
> > In some way /dev/sda1 and /dev/sdb1 lost information about --add
> > option after any reboot. :-(
>
> After you add your partition,
> how does mdadm --detail --scan compare to /etc/mdadm/mdadm.conf ?

There are important differences

pro:~# mdadm --add /dev/md0 /dev/sdc1

pro:~# cat /etc/mdadm/mdadm.conf
DEVICE partitions
ARRAY /dev/md1 level=raid5 num-devices=5 spares=1
UUID=04a39ca8:0f07922a:5eb2e3a1:851b13b9
  devices=/dev/sda2,/dev/sdb2,/dev/sdc2,/dev/sdd2,/dev/sde2,/dev/sdf2
ARRAY /dev/md0 level=raid1 num-devices=5 spares=1
UUID=fc7dc246:3f029459:8ede4b05:519a9a8f
  devices=/dev/sda1,/dev/sdb1,/dev/sdc1,/dev/sdd1,/dev/sde1,/dev/sdf1

pro:~# mdadm --detail --scan
ARRAY /dev/md1 level=raid5 num-devices=5 spares=1
UUID=04a39ca8:0f07922a:5eb2e3a1:851b13b9
  devices=/dev/sda2,/dev/sdf2,/dev/sdd2,/dev/sdc2,/dev/sde2,/dev/sdb2
ARRAY /dev/md0 level=raid1 num-devices=5
UUID=fc7dc246:3f029459:8ede4b05:519a9a8f
  devices=/dev/sda1,/dev/sdb1,/dev/sdc1



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