DUMPE2FS(8) System Manager's Manual DUMPE2FS(8)
dumpe2fs - dump ext2/ext3/ext4 filesystem information
dumpe2fs [ -bfhixV ] [ -o superblock=superblock ] [ -o blocksize=block-
size ] device
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.
-b print the blocks which are reserved as bad in the filesystem.
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.
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 filesys-
-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 hexadeci-
-V print the version number of dumpe2fs and exit.
You need to know the physical filesystem structure to understand the
dumpe2fs was written by Remy Card <Remy.Card@linux.org>. It is cur-
rently being maintained by Theodore Ts'o <firstname.lastname@example.org>.
dumpe2fs is part of the e2fsprogs package and is available from
e2fsck(8), mke2fs(8), tune2fs(8). ext4(5)
E2fsprogs version 1.42.13 May 2015 DUMPE2FS(8)
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