.\" -*- nroff -*-
.\" Copyright 1996-2001 Hans Reiser.
.\" 
.TH DEBUGREISERFS 8 "March 2001" "Reiserfsprogs 3.x.0j"
.SH NAME
debugreiserfs
.SH SYNOPSIS
.B debugreiserfs
[
.B -jdcmos
] [
.B -b \fIblocknumber
] [
.B -p \fIfilename.bmp
] [
.B -P \fIfilename.bmp
]
.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
print contents of journal
.TP
\fB-d
print formatted nodes of the filesystem
.TP
\fB-c
print contents of direct items
.TP
\fB-m
print contents of bitmap (not very useful)
.TP
\fB-o
print objectid map (not very useful)
.TP
\fB-s
scans the partition and prints a line when any kind of reiserfs formatted nodes found
.TP
\fB-b \fIblocknumber
print specified block of the filesystem
.TP
\fB-p \fIfilename
\fB-P \fIfilename

Makes \fBdebugreiserfs\fR to find filesystem metadata 
These exist to help reiserfsck debugging. If reiserfsck fails -
you may extract filesystem metadata with  \fBdebugreiserfs\fR -p filename /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.
-P will cause  \fBdebugreiserfs\fR to find and pack metadata from all the device whereas with -p it will only go through blocks marked used in filesystem bitmaps

.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 Hans Reiser <reiser@idiom.com>.
.SH SEE ALSO
.BR reiserfsck (8),
.BR mkreiserfs (8)