[root@snp-18k-03-v3 log]# dumpe2fs -h /dev/sdao
dumpe2fs 1.47.1-wc1 (28-May-2024)
Filesystem volume name:   sfa18k03-OST0023
Last mounted on:          /
Filesystem UUID:          00293e67-3762-48a6-a79b-b6c1414c30b0
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr dir_index filetype meta_bg extent 64bit mmp flex_bg large_dir sparse_super large_file huge_file uninit_bg dir_nlink quota project
Filesystem flags:         signed_directory_hash 
Default mount options:    user_xattr acl
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              335544320
Block count:              10737418240
Reserved block count:     107374182
Overhead clusters:        42875930
Free blocks:              7971391508
Free inodes:              320567331
First block:              0
Block size:               4096
Fragment size:            4096
Group descriptor size:    64
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         1024
Inode blocks per group:   128
Flex block group size:    256
Filesystem created:       Tue Jul 16 23:58:15 2024
Last mount time:          Thu Oct  3 22:49:17 2024
Last write time:          Tue Oct  8 16:24:52 2024
Mount count:              1
Maximum mount count:      -1
Last checked:             Thu Oct  3 21:25:11 2024
Check interval:           0 (<none>)
Lifetime writes:          55 TB
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               512
Required extra isize:     32
Desired extra isize:      32
Journal inode:            8
Default directory hash:   half_md4
Directory Hash Seed:      a8309c6f-88a5-459c-8bc8-2612c9cbd274
Journal backup:           inode blocks
MMP block number:         32647
MMP update interval:      5
User quota inode:         3
Group quota inode:        4
Project quota inode:      12
Journal features:         journal_incompat_revoke journal_64bit
Total journal size:       1024M
Total journal blocks:     262144
Max transaction length:   262144
Fast commit length:       0
Journal sequence:         0x0026e8b1
Journal start:            0
MMP_block:
    mmp_magic: 0x4d4d50
    mmp_check_interval: 5
    mmp_sequence: 0xff4d4d50
    mmp_update_date: Tue Oct  8 16:24:52 2024
    mmp_update_time: 1728404692
    mmp_node_name: snp-18k-03-v3
    mmp_device_name: sdao