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1tune2fs ^metadata_csum test
2Creating filesystem with 524288 1k blocks and 65536 inodes
3Superblock backups stored on blocks:
4	8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
5
6Allocating group tables:      done
7Writing inode tables:      done
8Creating journal (16384 blocks): done
9Creating 477 huge file(s) with 1024 blocks each: done
10Writing superblocks and filesystem accounting information:      done
11
12Pass 1: Checking inodes, blocks, and sizes
13Pass 2: Checking directory structure
14Pass 3: Checking directory connectivity
15Pass 4: Checking reference counts
16Pass 5: Checking group summary information
17
18Exit status is 0
19tune2fs -O ^metadata_csum,uninit_bg test.img
20Exit status is 0
21Change in FS metadata:
22@@ -2,7 +2,7 @@
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
31@@ -33,7 +33,6 @@
32 Journal inode:            8
33 Default directory hash:   half_md4
34 Journal backup:           inode blocks
35-Checksum type:            crc32c
36 Journal features:         (none)
37 Journal size:             16M
38 Journal length:           16384
39Pass 1: Checking inodes, blocks, and sizes
40Pass 2: Checking directory structure
41Pass 3: Checking directory connectivity
42Pass 4: Checking reference counts
43Pass 5: Checking group summary information
44
45Exit status is 0
46