From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Greaves <david@dgreaves.com>
Subject: Re: assemble vs create an array.......
Date: Wed, 05 Dec 2007 11:39:13 +0000
Message-ID: <47568DE1.1050108@dgreaves.com>
References: <474F869D.5040503@mpigani.org> <18255.41044.614676.410107@notabene.brown> <47501D7E.7000804@dgreaves.com> <475552D2.4000802@mpigani.org>
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To: Dragos <dragos@mpigani.org>
Cc: linux-raid@vger.kernel.org
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Dragos wrote:
> Thank you for your very fast answers.
> 
> First I tried 'fsck -n' on the existing array. The answer was that If I
> wanted to check a XFS partition I should use 'xfs_check'. That seems to
> say that my array was partitioned with xfs, not reiserfs. Am I correct?
> 
> Then I tried the different permutations:
> mdadm --create /dev/md0 --raid-devices=3 --level=5 missing /dev/sda1
> /dev/sdb1
> mount /dev/md0 temp
> mdadm --stop --scan
> 
> mdadm --create /dev/md0 --raid-devices=3 --level=5 /dev/sda1 missing
> /dev/sdb1
> mount /dev/md0 temp
> mdadm --stop --scan
> 
[etc]

> 
> With some arrays mount reported:
>   mount: you must specify the filesystem type
> and with others:
>   mount: Structure needs cleaning
> 
> No choice seems to have been successful.

OK, not as good as you could have hoped for.

Make sure you have the latest xfs tools.

you may want to try xfs_repair and you can use the -n (I think - check man page)
option.

You may need to force it to ignore the log

David