dumpe2fs(8)

1DUMPE2FS(8)                 System Manager's Manual                DUMPE2FS(8)
2
3
4

NAME

6       dumpe2fs - dump ext2/ext3 filesystem information
7

SYNOPSIS

9       dumpe2fs [ -bfhixV ] [ -ob superblock ] [ -oB blocksize ] device
10

DESCRIPTION

12       dumpe2fs  prints  the  super block and blocks group information for the
13       filesystem present on device.
14
15       dumpe2fs is similar to Berkeley's dumpfs program for the BSD Fast  File
16       System.
17

OPTIONS

19       -b     print the blocks which are reserved as bad in the filesystem.
20
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.
25
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.
31
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).
35
36       -h     only display the superblock information and not any of the block
37              group descriptor detail information.
38
39       -i     display  the  filesystem  data  from  an  image  file created by
40              e2image, using device as the pathname to the image file.
41
42       -x     print the detailed group information block numbers in  hexadeci‐
43              mal format
44
45       -V     print the version number of dumpe2fs and exit.
46

BUGS

48       You  need  to  know the physical filesystem structure to understand the
49       output.
50

AUTHOR

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>.
54

AVAILABILITY

56       dumpe2fs  is  part  of  the  e2fsprogs  package  and  is available from
57       http://e2fsprogs.sourceforge.net.
58