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DUMPE2FS(8)            DragonFly System Manager's Manual           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.

       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)

E2fsprogs version 1.42.13          May 2015                        DUMPE2FS(8)

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