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From: Eric Sandeen <sandeen@redhat.com>
To: "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Cc: Evgeniy Dushistov <dushistov@mail.ru>
Subject: Re: [PATCH] fix UFS superblock alignment issues
Date: Tue, 31 Oct 2006 09:22:30 -0600	[thread overview]
Message-ID: <45476A36.2020405@redhat.com> (raw)
In-Reply-To: <4546C701.9020707@redhat.com>

Eric Sandeen wrote:
> ufs2 fails to mount on x86_64, claiming bad magic.  This is because 
> ufs_super_block_third's fs_un1 member is padded out by 4 bytes for
> 8-byte alignment, pushing down the rest of the struct.
> 
> Forcing this to be packed solves it.  I took a quick look over
> other on-disk structures and didn't immediately find other problems.
> I was able to mount & ls a populated ufs2 filesystem w/ this change.

I should also mention that this seems to be a regression from
2.6.17->2.6.18, so perhaps it's a candidate for 2.6.18.x updates.

Thanks,

-Eric

  reply	other threads:[~2006-10-31 15:22 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-31  3:46 [PATCH] fix UFS superblock alignment issues Eric Sandeen
2006-10-31 15:22 ` Eric Sandeen [this message]
2006-10-31 15:54   ` Randy Dunlap

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