DEBUGREISERFS(8)

NAME
debugreiserfs

SYNOPSIS
debugreiserfs [ -jdcmos ] [ -b blocknumber ] [ -p filename.bmp ] [ -P filename.bmp ] 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  print contents of journal

-d  print formatted nodes of the filesystem

-c  print contents of direct items

-m  print contents of bitmap (not very useful)

-o  print objectid map (not very useful)

-s  scans the partition and prints a line when any kind of reiserfs formatted nodes found

-b blocknumber
    print specified block of the filesystem

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

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 Hans Reiser <reiser@idiom.com>.

SEE ALSO
reiserfsck(8), mkreiserfs(8)