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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 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.CardATlinux.org>.  It is currently being maintained by Theodore Ts'o
       <tytsoATalum.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)




E2fsprogs version 1.41.12          May 2010                        DUMPE2FS(8)