Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

debugreiserfs(8) [redhat man page]

DEBUGREISERFS(8)					      System Manager's Manual						  DEBUGREISERFS(8)

NAME
debugreiserfs SYNOPSIS
debugreiserfs [ -dDJmoqpS ] [ -j device ] [ -B blocknumber ] 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 device print contents of journal. Also with the option -p it allows to pack journal into archive with other metadata -J print journal header. -d print formatted nodes of the internal tree of the filesystem -D print formatted nodes of all used blocks of the filesystem -m print contents of bitmap (not very useful) -o print objectid map (not very useful) -1 blocknumber print specified block of the filesystem -p Makes debugreiserfs to find filesystem metadata This option exists to help reiserfsck debugging. If reiserfsck fails - you may extract filesystem metadata with debugreiserfs -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. -S When -S is not specified -p deals with blocks marked used in the filesystem bitmap. With this option set they will work with whole device. -q Suppress showing speed of progress when -p is in use 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 ReiserFS mail-list <reiserfs-list@namesys.com>. SEE ALSO
reiserfsck(8), mkreiserfs(8) Reiserfsprogs 3.6.4 January 2002 DEBUGREISERFS(8)

Check Out this Related Man Page

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)
Man Page

Featured Tech Videos