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Man Pages


Manual Reference Pages  -  DUMPE2FS (8)

NAME

dumpe2fs - dump ext2/ext3/ext4 filesystem information

CONTENTS

Synopsis
Description
Options
Bugs
Author
Availability
See Also

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)

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E2fsprogs version 1.42.13 DUMPE2FS (8) May 2015

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