tune2fs로 특정 파일시스템의 수퍼블록정보 확인하기

[root@su250 ~]# tune2fs -l /dev/sdb1

tune2fs 1.41.3 (12-Oct-2008)

Filesystem volume name:   <none>

Last mounted on:          <not available>

Filesystem UUID:          7c8b6096-a879-4280-84a0-eda2a9a68046

Filesystem magic number:  0xEF53

Filesystem revision #:    1 (dynamic)

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

Filesystem flags:         signed_directory_hash

Default mount options:    (none)

Filesystem state:         clean

Errors behavior:          Continue

Filesystem OS type:       Linux

Inode count:              655360

Block count:              2620595

Reserved block count:     131029

Free blocks:              2540932

Free inodes:              655349

First block:              0

Block size:               4096

Fragment size:            4096

Reserved GDT blocks:      639

Blocks per group:         32768

Fragments per group:      32768

Inodes per group:         8192

Inode blocks per group:   512

Flex block group size:    16

Filesystem created:       Wed Jan  7 01:07:05 2009

Last mount time:          Wed Jan  7 01:09:32 2009

Last write time:          Wed Jan  7 01:20:29 2009

Mount count:              1

Maximum mount count:      36

Last checked:             Wed Jan  7 01:07:05 2009

Check interval:           15552000 (6 months)

Next check after:         Mon Jul  6 01:07:05 2009

Reserved blocks uid:      0 (user root)

Reserved blocks gid:      0 (group root)

First inode:              11

Inode size:               256

Required extra isize:     28

Desired extra isize:      28

Journal inode:            8

Default directory hash:   half_md4

Directory Hash Seed:      5f610ba1-a591-49ae-8150-30772b9edfb2

Journal backup:           inode blocks

[root@su250 ~]#