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Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

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DUMPE2FS

Section: Maintenance Commands (8)
Updated: August 2014
Index Return to Main Contents
 

NAME

dumpe2fs - dump ext2/ext3/ext4 filesystem information  

SYNOPSIS

dumpe2fs [ -bfhixV ] [ -o superblock=superblock ] [ -o blocksize=blocksize ] device  

DESCRIPTION

dumpe2fs prints the super block and blocks group information for the filesystem present on device.

Note: When used with a mounted filesystem, the printed information may be old or inconsistent.  

OPTIONS

-b
print the blocks which are reserved as bad in the filesystem.
-o superblock=superblock
use the block superblock when examining the filesystem. This option is not usually needed except by a filesystem wizard who is examining the remains of a very badly corrupted filesystem.
-o blocksize=blocksize
use blocks of blocksize bytes when examining the filesystem. This option is not usually needed except by a filesystem wizard who is examining the remains of a very badly corrupted filesystem.
-f
force dumpe2fs to display a filesystem even though it may have some filesystem feature flags which dumpe2fs may not understand (and which can cause some of dumpe2fs's display to be suspect).
-h
only display the superblock information and not any of the block group descriptor detail information.
-i
display the filesystem data from an image file created by e2image, using device as the pathname to the image file.
-x
print the detailed group information block numbers in hexadecimal format
-V
print the version number of dumpe2fs and exit.
 

BUGS

You need to know the physical filesystem structure to understand the output.  

AUTHOR

dumpe2fs was written by Remy Card <Remy.Card@linux.org>. It is currently being maintained by Theodore Ts'o <tytso@alum.mit.edu>.  

AVAILABILITY

dumpe2fs is part of the e2fsprogs package and is available from http://e2fsprogs.sourceforge.net.  

SEE ALSO

e2fsck(8), mke2fs(8), tune2fs(8). ext4(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
BUGS
AUTHOR
AVAILABILITY
SEE ALSO


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