Linux 2.6 - man page for dumpe2fs (linux section 8)
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dumpe2fs - dump ext2/ext3/ext4 filesystem information
dumpe2fs [ -bfhixV ] [ -o superblock=superblock ] [ -o blocksize=blocksize ] device
dumpe2fs prints the super block and blocks group information for the filesystem present on
dumpe2fs is similar to Berkeley's dumpfs program for the BSD Fast File System.
-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
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
-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.
You need to know the physical filesystem structure to understand the output.
dumpe2fs was written by Remy Card <Remy.Card@linux.org>. It is currently being maintained
by Theodore Ts'o <email@example.com>.
dumpe2fs is part of the e2fsprogs package and is available from http://e2fsprogs.source-
e2fsck(8), mke2fs(8), tune2fs(8)
E2fsprogs version 1.41.14 December 2010 DUMPE2FS(8)
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