解决方法：您需要使用一个名为dumpe2fs的命令。
它显示有关ext2或ext3文件系统的许多有用信息。
通用语法如下：dumpe2fs /dev/device

它显示以下类型的信息：

• 文件系统卷名
• 最后安装在
• 文件系统功能：has_journal ext_attr文件类型needs_recovery sparse_super
• 默认安装选项
• 文件系统状态
• 文件系统操作系统类型
• 有关块等的信息

例如，显示有关/dev/hdb1的信息

$ dumpe2fs /dev/hdb1

输出：

Filesystem volume name:   /
Last mounted on:          
Filesystem UUID:          7a965fb9-bf9e-4ed5-8a01-321386b843d9
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr filetype needs_recovery sparse_super
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              2443200
Block count:              4883752
Reserved block count:     244187
Free blocks:              677028
Free inodes:              2063116
First block:              0
Block size:               4096
Fragment size:            4096
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         16288
Inode blocks per group:   509
Last mount time:          Thu Mar 16 23:25:43 2006
Last write time:          Thu Mar 16 23:25:43 2006
Mount count:              20
Maximum mount count:      30
Last checked:             Sun Mar 12 01:16:43 2006
Check interval:           0 ()
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               128
Journal inode:            8
First orphan inode:       782426
Journal backup:           inode blocks
Group 0: (Blocks 0-32767)
Primary superblock at 0, Group descriptors at 1-2
Block bitmap at 3 (+3), Inode bitmap at 4 (+4)
Inode table at 5-513 (+5)
93 free blocks, 15966 free inodes, 8 directories
Free blocks: 8844-8855, 9099-9126, 9129-9137, 9139-9142, 9146-9151, 9154-9155, 9158-9165, 9170, 9172, 9174-9176, 9178-9179
, 9182-9189, 9191, 9193, 9196-9197, 9200-9204
Free inodes: 114, 126-164, 172, 362-547, 549-589, 591-16288
Group 1: (Blocks 32768-65535)
Backup superblock at 32768, Group descriptors at 32769-32770
Block bitmap at 32771 (+3), Inode bitmap at 32772 (+4)
Inode table at 32773-33281 (+5)
6250 free blocks, 13747 free inodes, 143 directories
Free blocks: 38912-38919, 56874-57138, 57141-57343,
....
.....
.