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DUMPE2FS


Section: Maintenance Commands (8)
Updated: May 2010
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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.

dumpe2fs

is similar to Berkeley’s
dumpfs

program for the BSD Fast File System.
 

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 <[email protected]>. It is currently being
maintained by Theodore Ts’o <[email protected]>.
 

AVAILABILITY

dumpe2fs

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

SEE ALSO

e2fsck(8),

mke2fs(8),

tune2fs(8)




 

Index



NAME

SYNOPSIS

DESCRIPTION

OPTIONS

BUGS

AUTHOR

AVAILABILITY

SEE ALSO



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