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DUMPE2FS(8)									      DUMPE2FS(8)

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 fea-
	      ture  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.source-
       forge.net.

SEE ALSO
       e2fsck(8), mke2fs(8), tune2fs(8)

E2fsprogs version 1.41.14		  December 2010 			      DUMPE2FS(8)
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