1DUMPE2FS(8) System Manager's Manual DUMPE2FS(8)
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6 dumpe2fs - dump ext2/ext3 filesystem information
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9 dumpe2fs [ -bfhixV ] [ -ob superblock ] [ -oB blocksize ] device
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12 dumpe2fs prints the super block and blocks group information for the
13 filesystem present on device.
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15 dumpe2fs is similar to Berkeley's dumpfs program for the BSD Fast File
16 System.
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19 -b print the blocks which are reserved as bad in the filesystem.
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21 -ob superblock
22 use the block superblock when examining the filesystem. This
23 option is not usually needed except by a filesystem wizard who
24 is examining the remains of a very badly corrupted filesystem.
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26 -oB blocksize
27 use blocks of blocksize bytes when examining the filesystem.
28 This option is not usually needed except by a filesystem wizard
29 who is examining the remains of a very badly corrupted filesys‐
30 tem.
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32 -f force dumpe2fs to display a filesystem even though it may have
33 some filesystem feature flags which dumpe2fs may not understand
34 (and which can cause some of dumpe2fs's display to be suspect).
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36 -h only display the superblock information and not any of the block
37 group descriptor detail information.
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39 -i display the filesystem data from an image file created by
40 e2image, using device as the pathname to the image file.
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42 -x print the detailed group information block numbers in hexadeci‐
43 mal format
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45 -V print the version number of dumpe2fs and exit.
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48 You need to know the physical filesystem structure to understand the
49 output.
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52 dumpe2fs was written by Remy Card <Remy.Card@linux.org>. It is cur‐
53 rently being maintained by Theodore Ts'o <tytso@alum.mit.edu>.
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56 dumpe2fs is part of the e2fsprogs package and is available from
57 http://e2fsprogs.sourceforge.net.
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60 e2fsck(8), mke2fs(8), tune2fs(8)
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65E2fsprogs version 1.40.2 July 2007 DUMPE2FS(8)