| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | .\" -*- nroff -*- |
| 2 | .\" Copyright 1993, 1994, 1995 by Theodore Ts'o. All Rights Reserved. |
| 3 | .\" This file may be copied under the terms of the GNU Public License. |
| 4 | .\" |
| 5 | .TH DUMPE2FS 8 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@" |
| 6 | .SH NAME |
| 7 | dumpe2fs \- dump ext2/ext3/ext4 filesystem information |
| 8 | .SH SYNOPSIS |
| 9 | .B dumpe2fs |
| 10 | [ |
| 11 | .B \-bfhixV |
| 12 | ] |
| 13 | [ |
| 14 | .B \-o superblock=\fIsuperblock |
| 15 | ] |
| 16 | [ |
| 17 | .B \-o blocksize=\fIblocksize |
| 18 | ] |
| 19 | .I device |
| 20 | .SH DESCRIPTION |
| 21 | .B dumpe2fs |
| 22 | prints the super block and blocks group information for the filesystem |
| 23 | present on |
| 24 | .I device. |
| 25 | .PP |
| 26 | .B Note: |
| 27 | When used with a mounted filesystem, the printed |
| 28 | information may be old or inconsistent. |
| 29 | .SH OPTIONS |
| 30 | .TP |
| 31 | .B \-b |
| 32 | print the blocks which are reserved as bad in the filesystem. |
| 33 | .TP |
| 34 | .B \-o superblock=\fIsuperblock |
| 35 | use the block |
| 36 | .I superblock |
| 37 | when examining the filesystem. |
| 38 | This option is not usually needed except by a filesystem wizard who |
| 39 | is examining the remains of a very badly corrupted filesystem. |
| 40 | .TP |
| 41 | .B \-o blocksize=\fIblocksize |
| 42 | use blocks of |
| 43 | .I blocksize |
| 44 | bytes when examining the filesystem. |
| 45 | This option is not usually needed except by a filesystem wizard who |
| 46 | is examining the remains of a very badly corrupted filesystem. |
| 47 | .TP |
| 48 | .B \-f |
| 49 | force dumpe2fs to display a filesystem even though it may have some |
| 50 | filesystem feature flags which dumpe2fs may not understand (and which |
| 51 | can cause some of dumpe2fs's display to be suspect). |
| 52 | .TP |
| 53 | .B \-h |
| 54 | only display the superblock information and not any of the block |
| 55 | group descriptor detail information. |
| 56 | .TP |
| 57 | .B \-i |
| 58 | display the filesystem data from an image file created by |
| 59 | .BR e2image , |
| 60 | using |
| 61 | .I device |
| 62 | as the pathname to the image file. |
| 63 | .TP |
| 64 | .B \-x |
| 65 | print the detailed group information block numbers in hexadecimal format |
| 66 | .TP |
| 67 | .B \-V |
| 68 | print the version number of |
| 69 | .B dumpe2fs |
| 70 | and exit. |
| 71 | .SH BUGS |
| 72 | You need to know the physical filesystem structure to understand the |
| 73 | output. |
| 74 | .SH AUTHOR |
| 75 | .B dumpe2fs |
| 76 | was written by Remy Card <Remy.Card@linux.org>. It is currently being |
| 77 | maintained by Theodore Ts'o <tytso@alum.mit.edu>. |
| 78 | .SH AVAILABILITY |
| 79 | .B dumpe2fs |
| 80 | is part of the e2fsprogs package and is available from |
| 81 | http://e2fsprogs.sourceforge.net. |
| 82 | .SH SEE ALSO |
| 83 | .BR e2fsck (8), |
| 84 | .BR mke2fs (8), |
| 85 | .BR tune2fs (8). |
| 86 | .BR ext4 (5) |
| 87 | |