$ sudo fdisk -l /dev/sda 
Disk /dev/sda: 931.5 GiB, 1000227396608 bytes, 1953569134 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes

$ sudo dumpe2fs -h /dev/sda 
dumpe2fs 1.44.1 (24-Mar-2018)
Filesystem volume name:   <none>
Last mounted on:          /mnt/data
Filesystem UUID:          352c25e5-7bcb-4b06-8bde-5af7c2fe1a69
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags:         signed_directory_hash 
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              122101760
Block count:              488378646
Reserved block count:     24418932
Free blocks:              153978084
Free inodes:              122047282
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      907
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
RAID stride:              1
Flex block group size:    16
Filesystem created:       Wed Dec 12 00:10:13 2012
Last mount time:          Thu Feb 18 13:47:22 2021
Last write time:          Thu Feb 18 17:53:40 2021
Mount count:              13
Maximum mount count:      27
Last checked:             Mon Sep 14 11:27:17 2020
Check interval:           15552000 (6 months)
Next check after:         Sat Mar 13 11:27:17 2021
Lifetime writes:          1368 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
Default directory hash:   half_md4
Directory Hash Seed:      47532e69-7170-49e7-ac03-8821e6528472
Journal backup:           inode blocks
Journal features:         journal_incompat_revoke
Journal size:             128M
Journal length:           32768
Journal sequence:         0x000abeaa
Journal start:            0