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DEBUGREISERFS(8)								 DEBUGREISERFS(8)

NAME
       debugreiserfs

SYNOPSIS
       debugreiserfs [ -dDJmoqpS ] [ -j device ] [ -B blocknumber ]

       device

DESCRIPTION
       It  helps  sometimes to solve problems with reiserfs filesystems. Being called w/o options
       it prints super block of reiserfs filesystem found on the device.

       device is the special file corresponding to the device (e.g /dev/hdXX for IDE disk  parti-
	      tion or /dev/sdXX for SCSI disk partition).

OPTIONS
       -j device
	      print  contents  of journal. Also with the option -p it allows to pack journal into
	      archive with other metadata

       -J     print journal header.

       -d     print formatted nodes of the internal tree of the filesystem

       -D     print formatted nodes of all used blocks of the filesystem

       -m     print contents of bitmap (not very useful)

       -o     print objectid map (not very useful)

       -1 blocknumber
	      print specified block of the filesystem

       -p     Makes debugreiserfs to find filesystem metadata This option exists to help reiserf-
	      sck debugging. If reiserfsck fails - you may extract filesystem metadata with debu-
	      greiserfs -p /dev/xxx |gzip -c >	xxx.gz.  We  download  that  data  and	make  the
	      filesystem  similar  to  your  with  gunzip  -c xxx.gz | unpack /dev/xxx (unpack is
	      included into reiserfsprogs package). This usually allows to  reproduce  and  debug
	      the problem quickly. When data file is not too large.

       -S     When -S is not specified -p deals with blocks marked used in the filesystem bitmap.
	      With this option set they will work with whole device.

       -q     Suppress showing speed of progress when -p is in use

AUTHOR
       This version of debugreiserfs has been written by Hans Reiser <reiser@idiom.com>.

BUGS
       There are probably few of them. Please,	report	bugs  to  ReiserFS  mail-list  <reiserfs-
       list@namesys.com>.

SEE ALSO
       reiserfsck(8), mkreiserfs(8)

Reiserfsprogs 3.6.4			   January 2002 			 DEBUGREISERFS(8)
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