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 Please run e2fsck -fD on the filesystem.
24 test_filesys was not cleanly unmounted, check forced.
25 Pass 1: Checking inodes, blocks, and sizes
26 Pass 2: Checking directory structure
27 Pass 3: Checking directory connectivity
28 Pass 3A: Optimizing directories
29 Pass 4: Checking reference counts
30 Pass 5: Checking group summary information
34 Change in FS metadata:
36 Last mounted on: <not available>
37 Filesystem magic number: 0xEF53
38 Filesystem revision #: 1 (dynamic)
39 -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
40 +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
41 Default mount options: user_xattr acl
42 Filesystem state: clean
43 Errors behavior: Continue
47 Reserved block count: 26214
55 Default directory hash: half_md4
56 Journal backup: inode blocks
57 +Checksum type: crc32c
58 Journal features: (none)
62 Block bitmap at 262 (+261)
63 Inode bitmap at 278 (+277)
64 Inode table at 294-549 (+293)
65 - 21 free blocks, 536 free inodes, 2 directories, 536 unused inodes
66 - Free blocks: 4413-4433
67 + 18 free blocks, 536 free inodes, 2 directories, 536 unused inodes
68 + Free blocks: 4413, 4417-4433
70 Group 1: (Blocks 8193-16384) [INODE_UNINIT]
71 Backup superblock at 8193, Group descriptors at 8194-8197
72 Pass 1: Checking inodes, blocks, and sizes
73 Pass 2: Checking directory structure
74 Pass 3: Checking directory connectivity
75 Pass 4: Checking reference counts
76 Pass 5: Checking group summary information