linux-kernel - Re: Problem recovering a failed RIAD5 array with 4-drives.

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Date:	Thu, 12 Jul 2007 18:10:57 -0500
From:	James <LinuxKernel@...esplace.net>
To:	Neil Brown <neilb@...e.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Problem recovering a failed RIAD5 array with 4-drives.

On Thu July 12 2007 5:48 pm, you wrote:
> On Thursday July 12, LinuxKernel@...esplace.net wrote:
> > 
> > []# 
> > 
mdadm --create --verbose /dev/md0 --assume-clean --level=raid5 --raid-devices=4 --spare-devices=0  /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1
> > 
> snip
> > 
> >     Number   Major   Minor   RaidDevice State
> >        0       8       17        0      active sync   /dev/sdb1
> >        1       8       33        1      active sync   /dev/sdc1
> >        2       8        1        2      active sync   /dev/sda1
> >        3       8       49        3      active sync   /dev/sdd1
> 
> Something looks very wrong here.  You listed the devices to --create
> in one order:
>    a b c d
> but that appear in the array in a different order
>    b c a d
> 
> Did you cut/paste the command line into the mail, or did you retype
> it?  If you retyped it, could you have got it wrong?
> 
> You need the order that --detail shows to match the order of the
> original array....
> 
> NeilBrown
> 
> 

I don't know the original order of the array before all the problems started. 

Is there a way to determine the original order? 

The order that --detail is showing now is the order that appeared after 
issuing the command is it is in the email. (ie: a b c d)

Thank again.

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