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 -D 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 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)
65 -Group 0: (Blocks 1-8192)
66 +Group 0: (Blocks 1-8192) [ITABLE_ZEROED]
67 Primary superblock at 1, Group descriptors at 2-5
68 Reserved GDT blocks at 6-261
69 Block bitmap at 262 (+261)
70 Inode bitmap at 278 (+277)
71 Inode table at 294-549 (+293)
72 - 21 free blocks, 536 free inodes, 2 directories
73 - Free blocks: 4413-4433
74 + 18 free blocks, 536 free inodes, 2 directories, 536 unused inodes
75 + Free blocks: 4413, 4417-4433
77 -Group 1: (Blocks 8193-16384)
78 +Group 1: (Blocks 8193-16384) [INODE_UNINIT, ITABLE_ZEROED]
79 Backup superblock at 8193, Group descriptors at 8194-8197
80 Reserved GDT blocks at 8198-8453
81 Block bitmap at 263 (bg #0 + 262)
82 Inode bitmap at 279 (bg #0 + 278)
83 Inode table at 550-805 (bg #0 + 549)
84 - 0 free blocks, 1024 free inodes, 0 directories
85 + 0 free blocks, 1024 free inodes, 0 directories, 1024 unused inodes
87 Free inodes: 1025-2048
88 -Group 2: (Blocks 16385-24576)
89 +Group 2: (Blocks 16385-24576) [INODE_UNINIT, ITABLE_ZEROED]
90 Block bitmap at 264 (bg #0 + 263)
91 Inode bitmap at 280 (bg #0 + 279)
92 Pass 1: Checking inodes, blocks, and sizes
93 Pass 2: Checking directory structure
94 Pass 3: Checking directory connectivity
95 Pass 4: Checking reference counts
96 Pass 5: Checking group summary information