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DEBUGREISERFS(8) DEBUGREISERFS(8)
NAME
debugreiserfs - The debugging tool for the ReiserFS filesystem.
SYNOPSIS
debugreiserfs [ -dDJmoqpuSV ] [ -j device ] [ -B file ] [ -1 N ]
device
DESCRIPTION
debugreiserfs sometimes helps to solve problems with reiserfs filesys-
tems. When run without options it prints the super block of the Reis-
erFS filesystem found on the device.
device is the special file corresponding to the device (e.g /dev/hdXX
for an IDE disk partition or /dev/sdXX for a SCSI disk parti-
tion).
OPTIONS
-j device
prints the contents of the journal. The option -p allows it to
pack the journal with other metadata into the archive.
-J prints the journal header.
-d prints the formatted nodes of the internal tree of the filesys-
tem.
-D prints the formatted nodes of all used blocks of the filesystem.
-m prints the contents of the bitmap (slightly useful).
-o prints the objectid map (slightly useful).
-B file
takes the list of bad blocks stored in the internal ReiserFS
tree and translates it into an ascii list written to the speci-
fied file.
-1 blocknumber
prints the specified block of the filesystem.
-p extracts the filesystem's metadata with debugreiserfs -p
/dev/xxx | gzip -c > 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
debugreiserfs -u. When the data file is not too large, this
usually allows us to quickly reproduce and debug the problem.
-u builds the ReiserFS filesystem image with gunzip -c xxx.gz |
debugreiserfs -u /dev/image of the previously packed metadata
with debugreiserfs -p. The result image is not the same as the
original filesystem, because mostly only metadata were packed
with debugreiserfs -p, but the filesystem structure is com-
pletely recreated.
-S When -S is not specified -p deals with blocks marked used in the
filesystem bitmap only. With this option set debugreiserfs will
work with the entire device.
-q When -p is in use, suppress showing the speed of progress.
AUTHOR
This version of debugreiserfs has been written by Vitaly Fertman
<vitaly@namesys.com>.
BUGS
Please report bugs to the ReiserFS developers <reiserfs-
dev@namesys.com>, providing as much information as possible--your hard-
ware, kernel, patches, settings, all printed messages; check the syslog
file for any related information.
SEE ALSO
reiserfsck(8), mkreiserfs(8)
Reiserfsprogs 3.6.19 February 2004 DEBUGREISERFS(8)
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Sat Sep 8 16:40:49 GMT 2007
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