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dumpe2fs - dump ext2/ext3 filesystem information
dumpe2fs [ -bfhixV ] [ -ob superblock ] [ -oB blocksize ] device
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.
- -b
- print the blocks which are reserved as bad in the filesystem.
- -ob 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.
- -oB 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)
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