1 tune2fs ^metadata_csum test
2 Creating filesystem with 524288 1k blocks and 65536 inodes
3 Superblock backups stored on blocks:
4 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
6 Allocating group tables:
\b\b\b\b\bdone
7 Writing inode tables:
\b\b\b\b\bdone
8 Creating journal (16384 blocks): done
9 Creating 477 huge file(s) with 1024 blocks each: done
10 Writing superblocks and filesystem accounting information:
\b\b\b\b\bdone
12 Pass 1: Checking inodes, blocks, and sizes
13 Pass 2: Checking directory structure
14 Pass 3: Checking directory connectivity
15 Pass 4: Checking reference counts
16 Pass 5: Checking group summary information
19 tune2fs -O ^metadata_csum test.img
21 Change in FS metadata:
23 Last mounted on: <not available>
24 Filesystem magic number: 0xEF53
25 Filesystem revision #: 1 (dynamic)
26 -Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum
27 +Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
28 Default mount options: user_xattr acl
29 Filesystem state: clean
30 Errors behavior: Continue
33 Default directory hash: half_md4
34 Journal backup: inode blocks
35 -Checksum type: crc32c
36 Journal features: (none)
39 Pass 1: Checking inodes, blocks, and sizes
40 Pass 2: Checking directory structure
41 Pass 3: Checking directory connectivity
42 Pass 4: Checking reference counts
43 Pass 5: Checking group summary information