.\" -*- nroff -*-
.\" Copyright 1996-2002 Hans Reiser.
.\" 
.TH DEBUGREISERFS 8 "January 2002" "Reiserfsprogs 3.6.2"
.SH NAME
debugreiserfs
.SH SYNOPSIS
.B debugreiserfs
[
.B -dJmoqpS
] [
.B -j \fIdevice
] [
.B -B \fIblocknumber
]

.\" ] [
.\" .B -s
.\" ] [
.I device
.SH 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 \fIdevice\fR.
.TP
.I device
is the special file corresponding to the device (e.g /dev/hdXX for
IDE disk partition or /dev/sdXX for SCSI disk partition).
.SH OPTIONS
.TP
\fB-j\fR \fIdevice\fR
print contents of journal. Also with the option -p it allows to pack
journal into archive with other metadata  
.TP
\fB-J\fR
print journal header.
.TP
.B -d
print formatted nodes of the filesystem
.TP
.B -m
print contents of bitmap (not very useful)
.TP
.B -o
print objectid map (not very useful)
.TP
\fB-1\fR \fIblocknumber\fR
print specified block of the filesystem
.TP
.\" \fB-s
.\" scans the partition and prints a line when any kind of reiserfs
.\" formatted nodes found. Can be used to find specific key in the filesystem.
.\" .TP
.B -p
Makes \fBdebugreiserfs\fR to find filesystem metadata This option
exists to help reiserfsck debugging. If reiserfsck fails - you may
extract filesystem metadata with \fBdebugreiserfs\fR -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.
.TP
.B -S 
When -S is not specified -p 
.\" and -s 
deals with blocks marked used in the
filesystem bitmap. With this option set they will work with whole
device.
.TP
.B -q
Suppress showing speed of progress when 
.\" -s or 
-p is in use
.SH AUTHOR
This version of \fBdebugreiserfs\fR has been written by Hans Reiser <reiser@idiom.com>.
.SH BUGS
There are probably few of them. Please, report bugs to ReiserFS mail-list <reiserfs-list@namesys.com>.
.SH SEE ALSO
.BR reiserfsck (8),
.BR mkreiserfs (8)