dumpe2fs (8)
NAME
dumpe2fs - dump ext2/ext3/ext4 filesystem informationSYNOPSIS
dumpe2fs [ -bfhixV ] [ -o superblock=superblock ] [ -o blocksize=blocksize ] deviceDESCRIPTION
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)