Question

LINUX里dumpe2fs命令有什么用,怎么用

Answer 1

显示当前的磁盘状态
dumpe2fs /dev/sda*

# dumpe2fs /dev/sda6 | more
dumpe2fs 1.39 (29-May-2006)
Filesystem volume name: /tmp
Last mounted on: <not available>
Filesystem UUID: 4b64cac0-4335-4b8f-acc0-7940b4548a01
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_file
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 4100544
Block count: 4096567
Reserved block count: 204828
Free blocks: 3924335
Free inodes: 4100522
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 1000
Blocks per group: 32752
Fragments per group: 32752
Inodes per group: 32544
Inode blocks per group: 1017
Filesystem created: Mon Oct 19 19:15:34 2009
Last mount time: Sat Oct 24 11:28:59 2009
Last write time: Sat Oct 24 11:28:59 2009
Mount count: 6
Maximum mount count: -1
Last checked: Mon Oct 19 19:15:34 2009
--More--

man 当中描述：

NAME
dumpe2fs - dump ext2/ext3 filesystem information

SYNOPSIS
dumpe2fs [ -bfhixV ] [ -ob superblock ] [ -oB blocksize ] device

DESCRIPTION
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.

读一下就明白了。