Man page - debugreiserfs(8)

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Manual

DEBUGREISERFS

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
AUTHOR
BUGS
SEE ALSO

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 ReiserFS 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 filesystem 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 debugreiserfs -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-devel@vger.kernel.org>, providing as much information as possible--your hardware, kernel, patches, settings, all printed messages; check the syslog file for any related information.