rebuild extent 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
mke2fs: Operation not supported for inodes containing extents while creating huge files
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
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:
@@ -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 sparse_super large_file huge_file dir_nlink
+Filesystem features:      has_journal ext_attr resize_inode dir_index filetype extent sparse_super large_file huge_file dir_nlink
 Default mount options:    user_xattr acl
 Filesystem state:         clean
 Errors behavior:          Continue
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