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tune2fs ^metadata_csum test
Creating filesystem with 524288 1k blocks and 65536 inodes
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
Allocating group tables: done
Writing inode tables: done
Creating journal (16384 blocks): done
Creating 477 huge file(s) with 1024 blocks each: done
Writing superblocks and filesystem accounting information: done
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Exit status is 0
tune2fs -O ^metadata_csum test.img
Exit status is 0
Change in FS metadata:
@@ -2,7 +2,7 @@
Last mounted on: <not available>
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
-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
+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
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
@@ -34,7 +34,6 @@
Journal inode: 8
Default directory hash: half_md4
Journal backup: inode blocks
-Checksum type: crc32c
Journal features: (none)
Total journal size: 16M
Total journal blocks: 16384
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Exit status is 0
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