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<h1 align=center>DEBUGREISERFS</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#OPTIONS">OPTIONS</a><br>
<a href="#AUTHOR">AUTHOR</a><br>
<a href="#BUGS">BUGS</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>

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<a name="NAME"></a>
<h2>NAME</h2>
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debugreiserfs - The debugging tool for the ReiserFS filesystem.</td></table>
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>

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<b>debugreiserfs</b> [ <b>-dDJmoqpuSV</b> ] [ <b>-j</b>
<i>device</i> ] [ <b>-B</b> <i>file</i> ] [ <b>-1</b>
<i>N</i> ]</td></table>

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<i>device</i></td></table>
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>

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<b>debugreiserfs</b> sometimes helps to solve problems with
reiserfs filesystems. When run without options it prints the
super block of the ReiserFS filesystem found on the
<i>device</i>.</td></table>

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<i>device</i></td></table>

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is the special file corresponding to the device (e.g
/dev/hdXX for an IDE disk partition or /dev/sdXX for a SCSI
disk partition).</td></table>
<a name="OPTIONS"></a>
<h2>OPTIONS</h2>

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<b>-j</b> <i>device</i></td></table>

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prints the contents of the journal. The option -p allows it
to pack the journal with other metadata into the
archive.</td></table>

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<b>-J</b></td></table>

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prints the journal header.</td></table>

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<b>-d</b></td></table>

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prints the formatted nodes of the internal tree of the
filesystem.</td></table>

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<b>-D</b></td></table>

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prints the formatted nodes of all used blocks of the
filesystem.</td></table>

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<b>-m</b></td></table>

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prints the contents of the bitmap (slightly
useful).</td></table>

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<b>-o</b></td></table>

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prints the objectid map (slightly useful).</td></table>

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<b>-B</b> <i>file</i></td></table>

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takes the list of bad blocks stored in the internal ReiserFS
tree and translates it into an ascii list written to the
specified file.</td></table>

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<b>-1</b> <i>blocknumber</i></td></table>

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prints the specified block of the filesystem.</td></table>

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<b>-p</b></td></table>

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extracts the filesystem's metadata with <b>debugreiserfs</b>
-p /dev/xxx | gzip -c &gt; xxx.gz. None of your data are
packed unless a filesystem corruption presents when the
whole block having this corruption is packed. You send us
the output, and we use it to create a filesystem with the
same strucure as yours using <b>debugreiserfs -u</b>. When
the data file is not too large, this usually allows us to
quickly reproduce and debug the problem.</td></table>

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<b>-u</b></td></table>

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builds the ReiserFS filesystem image with gunzip -c xxx.gz |
<b>debugreiserfs</b> -u /dev/image of the previously packed
metadata with <b>debugreiserfs -p</b>. The result image is
not the same as the original filesystem, because mostly only
metadata were packed with <b>debugreiserfs -p</b>, but the
filesystem structure is completely recreated.</td></table>

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<b>-S</b></td></table>

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When -S is not specified -p deals with blocks marked used in
the filesystem bitmap only. With this option set
<b>debugreiserfs</b> will work with the entire
device.</td></table>

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<b>-q</b></td></table>

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When -p is in use, suppress showing the speed of
progress.</td></table>
<a name="AUTHOR"></a>
<h2>AUTHOR</h2>

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This version of <b>debugreiserfs</b> has been written by
Vitaly Fertman &lt;vitaly@namesys.com&gt;.</td></table>
<a name="BUGS"></a>
<h2>BUGS</h2>

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Please report bugs to the ReiserFS developers
&lt;reiserfs-dev@namesys.com&gt;, providing as much
information as possible--your hardware, kernel, patches,
settings, all printed messages; check the syslog file for
any related information.</td></table>
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>

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<b>reiserfsck</b>(8), <b>mkreiserfs</b>(8)</td></table>
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