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tune2fs test
128-byte inodes cannot handle dates beyond 2038 and are deprecated
Creating filesystem with 786432 1k blocks and 98304 inodes
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409, 663553
Allocating group tables: done
Writing inode tables: done
Creating journal (16384 blocks): done
Creating 6334 huge file(s) with 117 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 -I 256 -O metadata_csum test.img
Setting inode size 256
This operation requires a freshly checked filesystem.
Please run e2fsck -fD on the filesystem.
Exit status is 0
Backing up journal inode block information.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 3A: Optimizing directories
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Change in FS metadata:
@@ -5 +5 @@
-Filesystem features: has_journal ext_attr dir_index filetype extent 64bit sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
+Filesystem features: has_journal ext_attr dir_index filetype extent 64bit sparse_super large_file huge_file dir_nlink extra_isize metadata_csum
@@ -22 +22 @@
-Inode blocks per group: 128
+Inode blocks per group: 256
@@ -28 +28 @@
-Inode size: 128
+Inode size: 256
@@ -31,0 +32 @@
+Checksum type: crc32c
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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