From mboxrd@z Thu Jan  1 00:00:00 1970
From: Edward Shishkin <edward.shishkin@gmail.com>
Subject: Re: Negative blocks in rebuild-tree
Date: Sun, 09 Jan 2011 01:58:16 +0100
Message-ID: <4D290828.8050304@gmail.com>
References: <4D28674A.60603@keff.org>
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To: Sebastian Hyrwall <sh@keff.org>, Jeff Mahoney <jeffm@suse.com>
Cc: reiserfs-devel@vger.kernel.org

On 01/08/2011 02:31 PM, Sebastian Hyrwall wrote:
> Hi

Hello.

>
> I am getting a negative block-number with reiserfsck when doing
> --rebuild-tree -S (or without -S). This causes a segmentation fault
> later (pass 2) in the check because it tries to read a "non-existant
> block". My rebuild takes 3 days and i didn't copy the stdout-info the
> first time so I will post some more info as soon as it becomes available.
>
> Pass 0:
> ####### Pass 0 #######
> The whole partition (-710934672 blocks) is to be scanned
> Skipping 117586 blocks (super block, journal, bitmaps)


So you do have a ~16T partition. Correct?


  -711052258 blocks


> will be read
>
> Does anyone have any idea on how to fix this?
>
> On a 64-bit system.


It looks like you have encountered an overflow/truncation fsck bug 
specific to giant volumes.

I would first ask Jeff: AFAIK he is planning to enable 16T files
in reiserfs.
Jeff, do you have any non-published fixups for such problems?

Thanks,
Edward.


>
> Sincerely,
> Sebastian H
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