notebook-pc ~ # tune2fs -l /dev/sda1
tune2fs 1.42.9 (4-Feb-2014)
Filesystem volume name: MINT17.3.1
Last mounted on: /
Filesystem UUID: 7ac30428-27f8-4ecf-b142-45762738cce6
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags: signed_directory_hash
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 4890624
Block count: 19536384
Reserved block count: 976819
Free blocks: 15503428
Free inodes: 4335167
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 1019
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
Flex block group size: 16
Filesystem created: Thu Feb 20 23:56:25 2020
Last mount time: Tue Mar 17 14:25:25 2020
Last write time: Tue Mar 17 14:25:24 2020
Mount count: 17
Maximum mount count: -1
Last checked: Wed Mar 11 15:44:37 2020
Check interval: 0 (<none>)
Lifetime writes: 93 GB
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
First orphan inode: 2490646
Default directory hash: half_md4
Directory Hash Seed: 376bb4d5-d715-440f-b965-589e3fac4e72
Journal backup: inode blocks