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CNN: Hans Reiser Convicted
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DEBUGREISERFS(8) System Manager's Manual 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 partition 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 reiserfsck debugging. If reiserfsck fails - you may extract filesystem metadata with debugreiserfs -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)
