05-21-2013
reiserfsck is needed. You'll want to boot from CD/DVD and go to rescue mode. Once at a root shell, you can do the reiserfsck --rebuild-tree. That command effectively scans the corrupted filesystem and rebuilds things from what it discovers. The reiserfs v3 is more like a large data structure on the disk... and so when bad blocks or certain bad shutdown situation occur, it gets corrupted. I've done --rebuild-tree many times successfully. My personal recommendation is to not use reiserfs on a something like a laptop (unless you are very careful to power it down nicely, running out of battery without any kind of power mgmt will likely cause the scenario, or just hard rebooting even...).
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LEARN ABOUT LINUX
debugreiserfs
DEBUGREISERFS(8) System Manager's Manual 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 filesystems. 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 partition).
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 filesystem.
-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 specified
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 filesys-
tem 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 debu-
greiserfs -p, but the filesystem structure is completely 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 hardware, kernel,
patches, settings, all printed messages; check the syslog file for any related information.
SEE ALSO
reiserfsck(8), mkreiserfs(8)
Reiserfsprogs 3.6.21 January 2009 DEBUGREISERFS(8)