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Date:      Thu, 3 Nov 2005 22:49:13 +0300
From:      Taras Savchuk <taras.savchuk@gmail.com>
To:        Xin LI <delphij@gmail.com>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: May be a bug in fsck [ after super block crash on 5.4-STABLE ]
Message-ID:  <84099c3d0511031149u53fee379of6158584e075d38d@mail.gmail.com>
In-Reply-To: <a78074950511031120r6b51bbedt692b7ed614f0da45@mail.gmail.com>
References:  <84099c3d0511030325q6d1df92ag77310ff1b03a2d15@mail.gmail.com> <84099c3d0511030535x400c80f4k7ab7ad1905d8f918@mail.gmail.com> <a78074950511031120r6b51bbedt692b7ed614f0da45@mail.gmail.com>

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On 11/3/05, Xin LI <delphij@gmail.com> wrote:
  On 11/3/05, Taras Savchuk <taras.savchuk@gmail.com> wrote:
> My SATA HDD with UFS2 crashed. While checking HDD fsck said, that alterna=
te
> super block at block 32 is not present. In 'man fsck' I saw, that in UFS2=
 =20
> (my file system) alternate super block is usually located in block 160 (F=
or
> UFS1 - in 32). So the question is: why fsck trying to find alternate
> superblock in wrong block for UFS2? I can suppose, that fsck dont know fi=
le =20
> system type (UFS1 or UFS2) while checking, but such assumption seems to b=
e
> wrong.
>
> fsck with '-b 160' optione works well.

I think this is a bug.  You may want to dig into fsck_ffs/setup.c to =20
find out how to solve this...

I'll try, but I'm not a big kernel-hacker. Thank you for answer.





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