| .\" -*- nroff -*- |
| .\" Copyright 1996-2003 Hans Reiser. |
| .\" |
| .TH DEBUGREISERFS 8 "April 2003" "Reiserfsprogs 3.6.9" |
| .SH NAME |
| debugreiserfs |
| .SH SYNOPSIS |
| .B debugreiserfs |
| [ |
| .B -dDJmoqpS |
| ] [ |
| .B -j \fIdevice |
| ] [ |
| .B -B \fIblocknumber |
| ] |
| |
| .\" ] [ |
| .\" .B -s |
| .\" ] [ |
| .I device |
| .SH DESCRIPTION |
| It helps sometimes to solve problems with reiserfs filesystems. Being |
| called without 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 internal tree of the filesystem |
| .TP |
| .B -D |
| print formatted nodes of all used blocks 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@namesys.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) |
