DUMPE2FS(8) manual page
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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 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.
- -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.
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
<tytso@alum.mit.edu>.
dumpe2fs is part of the e2fsprogs package
and is available from http://e2fsprogs.sourceforge.net.
e2fsck(8)
,
mke2fs(8)
, tune2fs(8)
. ext4(5)
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