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 This operation requires a freshly checked filesystem.
23 Please run e2fsck -fD on the filesystem.
26 test_filesys was not cleanly unmounted, check forced.
27 Pass 1: Checking inodes, blocks, and sizes
28 Pass 2: Checking directory structure
29 Pass 3: Checking directory connectivity
30 Pass 3A: Optimizing directories
31 Pass 4: Checking reference counts
32 Pass 5: Checking group summary information
36 Change in FS metadata:
38 Last mounted on: <not available>
39 Filesystem magic number: 0xEF53
40 Filesystem revision #: 1 (dynamic)
41 -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
42 +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
43 Default mount options: user_xattr acl
44 Filesystem state: clean
45 Errors behavior: Continue
48 Reserved block count: 26214
49 Overhead clusters: 35246
57 Default directory hash: half_md4
58 Journal backup: inode blocks
59 +Checksum type: crc32c
60 Journal features: (none)
67 -Group 0: (Blocks 1-8192)
68 +Group 0: (Blocks 1-8192) [ITABLE_ZEROED]
69 Primary superblock at 1, Group descriptors at 2-5
70 Reserved GDT blocks at 6-261
71 Block bitmap at 262 (+261)
72 Inode bitmap at 278 (+277)
73 Inode table at 294-549 (+293)
74 - 21 free blocks, 536 free inodes, 2 directories
75 - Free blocks: 4413-4433
76 + 18 free blocks, 536 free inodes, 2 directories, 536 unused inodes
77 + Free blocks: 4413, 4417-4433
79 -Group 1: (Blocks 8193-16384)
80 +Group 1: (Blocks 8193-16384) [INODE_UNINIT, ITABLE_ZEROED]
81 Backup superblock at 8193, Group descriptors at 8194-8197
82 Reserved GDT blocks at 8198-8453
83 Block bitmap at 263 (bg #0 + 262)
84 Inode bitmap at 279 (bg #0 + 278)
85 Inode table at 550-805 (bg #0 + 549)
86 - 0 free blocks, 1024 free inodes, 0 directories
87 + 0 free blocks, 1024 free inodes, 0 directories, 1024 unused inodes
89 Free inodes: 1025-2048
90 -Group 2: (Blocks 16385-24576)
91 +Group 2: (Blocks 16385-24576) [INODE_UNINIT, ITABLE_ZEROED]
92 Block bitmap at 264 (bg #0 + 263)
93 Inode bitmap at 280 (bg #0 + 279)
94 Pass 1: Checking inodes, blocks, and sizes
95 Pass 2: Checking directory structure
96 Pass 3: Checking directory connectivity
97 Pass 4: Checking reference counts
98 Pass 5: Checking group summary information