From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sarah Newman <srn@prgmr.com>
Subject: Re: raid 5 crashed
Date: Fri, 3 Jun 2016 09:31:37 -0700
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To: bobzer <bobzer@gmail.com>
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On 06/03/2016 08:27 AM, bobzer wrote:

> i use losetup to make my dd image a dev/loop device and took the risk
> of start the raid but it doesn't work:
> i did :
> mdadm --assemble --force --name=/dev/md0 /dev/sdb1 /dev/sdd1
> /dev/loop2 /dev/sdc1
> it answer :
> mdadm: device /dev/sdb1 exist but is not an md array
> 
> except that is not true, sdb1 and sdd1 are the correct drive. sdc1 is
> the one saw as a spare

The --name is for if you want to call the device something other than just md0. If you use /dev/md0 instead of --name=/dev/md0 it might work.