tune2fs실무2편: 파일시스템의 수퍼블록 정보 확인하기

[root@RockyLinux01 ~]# tune2fs -l /dev/sdc1

tune2fs 1.46.5 (30-Dec-2021)

Filesystem volume name:   <none>

Last mounted on:          <not available>

Filesystem UUID:          37b4a747-585d-4c1e-be69-b7a5f82d2b07

Filesystem magic number:  0xEF53

Filesystem revision #:    1 (dynamic)

Filesystem features:      has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum

Filesystem flags:         signed_directory_hash

Default mount options:    user_xattr acl

Filesystem state:         clean

Errors behavior:          Continue

Filesystem OS type:       Linux

Inode count:              6553600

Block count:              26214139

Reserved block count:     1310706

Overhead clusters:        557842

Free blocks:              25656291

Free inodes:              6553589

First block:              0

Block size:               4096

Fragment size:            4096

Group descriptor size:    64

Reserved GDT blocks:      1024

Blocks per group:         32768

Fragments per group:      32768

Inodes per group:         8192

Inode blocks per group:   512

Flex block group size:    16

Filesystem created:       Mon Jun 26 15:33:47 2023

Last mount time:          n/a

Last write time:          Mon Jun 26 15:33:47 2023

Mount count:              0

Maximum mount count:      -1

Last checked:             Mon Jun 26 15:33:47 2023

Check interval:           0 (<none>)

Lifetime writes:          4332 kB

Reserved blocks uid:      0 (user root)

Reserved blocks gid:      0 (group root)

First inode:              11

Inode size:               256

Required extra isize:     32

Desired extra isize:      32

Journal inode:            8

Default directory hash:   half_md4

Directory Hash Seed:      b2b4f9af-e5b1-4bfa-99c9-1bb66e0feeb6

Journal backup:           inode blocks

Checksum type:            crc32c

Checksum:                 0x545a50f3

[root@RockyLinux01 ~]#