dumpe2fs  (选项)   (参数)

文件系统：指定要查看信息的文件系统。

 dumpe2fs /dev/sda3  >a.log

 [root@ ~]# head - a.log

 Filesystem volume name:   <none>

 Last mounted on:          /

 Filesystem UUID:          1819c4c1---91f7-ae95ffbeb1d2

 Filesystem magic number:  0xEF53

 Filesystem revision #:     (dynamic)

 Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize

 Filesystem flags:         signed_directory_hash

 Default mount options:    user_xattr acl

 Filesystem state:         clean

 Errors behavior:          Continue

 Filesystem OS type:       Linux

 Inode count:

 Block count:

 Reserved block count:

 Free blocks:

 Free inodes:

 First block:

 Block size:

 Fragment size:

 Reserved GDT blocks:

 Blocks per group:

 Fragments per group:

 Inodes per group:

 Inode blocks per group:

 Flex block group size:

 Filesystem created:       Sat Nov  ::

 Last mount time:          Sat Dec  ::

 Last write time:          Sat Nov  ::

 Mount count:

 Maximum mount count:      -

 Last checked:             Sat Nov  ::

 Check interval:            (<none>)

 Lifetime writes:           MB

 Reserved blocks uid:       (user root)

 Reserved blocks gid:       (group root)

 First inode:

 Inode size:

 Required extra isize:

 Desired extra isize:

 Journal inode:

 Default directory hash:   half_md4

 Directory Hash Seed:      b240aaed-83b3--b226-09e11191e2a8

 Journal backup:           inode blocks

 Journal features:         journal_incompat_revoke

 Journal size:             128M

 Journal length:

 Journal sequence:         0x00000727

 Journal start:            

 Group : (Blocks -) [ITABLE_ZEROED]

   Checksum 0x88c7, unused inodes

   Primary superblock at , Group descriptors at -

   Reserved GDT blocks at -

   Block bitmap at  (+), Inode bitmap at  (+)

   Inode table at - (+)

    free blocks,  free inodes,  directories,  unused inodes

   Free blocks: -

   Free inodes: -

 Group : (Blocks -) [INODE_UNINIT, ITABLE_ZEROED]

   Checksum 0x8194, unused inodes

   Backup superblock at , Group descriptors at -

   Reserved GDT blocks at -

   Block bitmap at  (+), Inode bitmap at  (+)

   Inode table at - (+)

    free blocks,  free inodes,  directories,  unused inodes

   Free blocks: , -, -, -, -, -, -, -, -, -, -, -, -, -, , -, -, -, -, -

   Free inodes: -

 Group : (Blocks -) [INODE_UNINIT, ITABLE_ZEROED]

   Checksum 0x2a97, unused inodes

   Block bitmap at  (+), Inode bitmap at  (+)

   Inode table at - (+)

    free blocks,  free inodes,  directories,  unused inodes

   Free blocks: -, -, -, -, -, -

   Free inodes: -

 Group : (Blocks -) [INODE_UNINIT, ITABLE_ZEROED]

   Checksum 0xa330, unused inodes

   Backup superblock at , Group descriptors at -

   Reserved GDT blocks at -

   Block bitmap at  (+), Inode bitmap at  (+)

   Inode table at - (+)

    free blocks,  free inodes,  directories,  unused inodes

   Free blocks: -, -, -, -, -, -, -, -, , -

   Free inodes: -

 Group : (Blocks -) [INODE_UNINIT, ITABLE_ZEROED]

   Checksum 0xfa36, unused inodes

   Block bitmap at  (+), Inode bitmap at  (+)

   Inode table at - (+)

    free blocks,  free inodes,  directories,  unused inodes

   Free blocks: -

   Free inodes: -

 Group : (Blocks -) [INODE_UNINIT, ITABLE_ZEROED]

   Checksum 0x0890, unused inodes

   Backup superblock at , Group descriptors at -

   Reserved GDT blocks at -

   Block bitmap at  (+), Inode bitmap at  (+)

   Inode table at - (+)

    free blocks,  free inodes,  directories,  unused inodes

   Free blocks: -

   Free inodes: -