dumpe2fs 1.47.0 (5-Feb-2023)
Filesystem volume name:   <none>
Last mounted on:          /data
Filesystem UUID:          c1308e81-eb2e-4139-b86c-9ba4e8f6cf56
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr dir_index filetype meta_bg 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:              520093696
Block count:              8321499136
Reserved block count:     405144714
Overhead clusters:        33364378
Free blocks:              624977360
Free inodes:              512728782
First block:              0
Block size:               4096
Fragment size:            4096
Group descriptor size:    64
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         2048
Inode blocks per group:   128
RAID stride:              128
RAID stripe width:        640
First meta block group:   3328
Flex block group size:    16
Filesystem created:       Sun Jul 29 10:53:42 2018
Last mount time:          Wed Jun  7 07:32:06 2023
Last write time:          Fri Jun  9 09:03:40 2023
Mount count:              0
Maximum mount count:      -1
Last checked:             Fri Jun  9 09:03:40 2023
Check interval:           0 (<none>)
Lifetime writes:          86 TB
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:      272d456b-5966-4091-b421-b2d409955338
Journal backup:           inode blocks
Checksum type:            crc32c
Checksum:                 0xd21b5110
Journal features:         journal_incompat_revoke journal_64bit journal_checksum_v3
Total journal size:       1024M
Total journal blocks:     262144
Max transaction length:   262144
Fast commit length:       0
Journal sequence:         0x00238f6f
Journal start:            0
Journal checksum type:    crc32c
Journal checksum:         0x4d888ccd


Group 0: (Blocks 0-32767) csum 0x0c37 [ITABLE_ZEROED]
  Primary superblock at 0, Group descriptors at 1-3328
  Block bitmap at 3329 (+3329), csum 0x67e0ff92
  Inode bitmap at 3345 (+3345), csum 0x049db839
  Inode table at 3361-3488 (+3361)
  0 free blocks, 1827 free inodes, 2 directories, 1826 unused inodes
  Free blocks: 
  Free inodes: 218, 223-2048
Group 1: (Blocks 32768-65535) csum 0x4173 [INODE_UNINIT, ITABLE_ZEROED]
  Backup superblock at 32768, Group descriptors at 32769-36096
  Block bitmap at 3330 (bg #0 + 3330), csum 0x67e0ff92
  Inode bitmap at 3346 (bg #0 + 3346), csum 0x00000000
  Inode table at 3489-3616 (bg #0 + 3489)
  0 free blocks, 2048 free inodes, 0 directories, 2048 unused inodes
  Free blocks: 
  Free inodes: 2049-4096
Group 2: (Blocks 65536-98303) csum 0x551c [INODE_UNINIT, ITABLE_ZEROED]
  Block bitmap at 3331 (bg #0 + 3331), csum 0x67e0ff92
  Inode bitmap at 3347 (bg #0 + 3347), csum 0x00000000
  Inode table at 3617-3744 (bg #0 + 3617)
  0 free blocks, 2048 free inodes, 0 directories, 2048 unused inodes
  Free blocks: 
  Free inodes: 4097-6144
Group 3: (Blocks 98304-131071) csum 0x4046 [INODE_UNINIT, ITABLE_ZEROED]
  Backup superblock at 98304, Group descriptors at 98305-101632
  Block bitmap at 3332 (bg #0 + 3332), csum 0x67e0ff92
  Inode bitmap at 3348 (bg #0 + 3348), csum 0x00000000
  Inode table at 3745-3872 (bg #0 + 3745)
  0 free blocks, 2048 free inodes, 0 directories, 2048 unused inodes
  Free blocks: 
  Free inodes: 6145-8192
Group 4: (Blocks 131072-163839) csum 0xb58c [INODE_UNINIT, ITABLE_ZEROED]
  Block bitmap at 3333 (bg #0 + 3333), csum 0x67e0ff92
  Inode bitmap at 3349 (bg #0 + 3349), csum 0x00000000
  Inode table at 3873-4000 (bg #0 + 3873)
  0 free blocks, 2048 free inodes, 0 directories, 2048 unused inodes
  Free blocks: 
  Free inodes: 8193-10240
Group 5: (Blocks 163840-196607) csum 0x8db2 [INODE_UNINIT, ITABLE_ZEROED]
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