自宅サーバーのtune2fs -l /dev/sdb1

root@***-PC-LL750AS1YW:/home/***# tune2fs -l /dev/sdb1
tune2fs 1.45.5 (07-Jan-2020)
Filesystem volume name: DataDisk
Last mounted on: /home-share
Filesystem UUID: 9724fbc1-568c-4382-b9f2-5c4900e3e0f3
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery 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: 122101760
Block count: 488378368
Reserved block count: 24418918
Free blocks: 345266664
Free inodes: 122012538
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: Tue Apr 13 19:25:09 2021
Last mount time: Sat Nov 20 15:22:09 2021
Last write time: Sat Nov 20 15:22:09 2021
Mount count: 33
Maximum mount count: -1
Last checked: Tue Apr 13 19:25:09 2021
Check interval: 0 (<none>)
Lifetime writes: 1552 GB
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: b36c6738-829c-4e76-8d85-9e8d6ba73315
Journal backup: inode blocks
Checksum type: crc32c
Checksum: 0x923b0016