dumpe2fs - rpi3a+
dumpe2fs 1.47.0 (5-Feb-2023)
Filesystem volume name: rootfs
Last mounted on: /
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 dir_nlink extra_isize metadata_csum
Filesystem flags: unsigned_directory_hash
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 888288
Block count: 3729408
Reserved block count: 186467
Free blocks: 2931078
Free inodes: 794933
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 136
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 7792
Inode blocks per group: 487
Flex block group size: 16
Filesystem created: Thu Jul 4 03:13:20 2024
Last mount time: Thu Jul 4 03:15:06 2024
Last write time: Wed Jul 24 10:01:01 2024
Mount count: 5
Maximum mount count: -1
Last checked: Thu Jul 4 03:13:20 2024
Check interval: 0 ()
Lifetime writes: 4192 MB
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
First orphan inode: 4248
Default directory hash: half_md4
Journal backup: inode blocks
Checksum type: crc32c
Checksum: 0xe623ef7f
Journal features: journal_incompat_revoke journal_checksum_v3
Total journal size: 64M
Total journal blocks: 16384
Max transaction length: 16384
Fast commit length: 0
Journal sequence: 0x00000bb0
Journal start: 9105
Journal checksum type: crc32c
Journal checksum: 0x4cce0c3d