e2fsprogs/tests/mke2fs.conf.in

[defaults]
	base_features = sparse_super,filetype,resize_inode,dir_index,ext_attr
	blocksize = 4096
	inode_size = 256
	inode_ratio = 16384
	reserved_ratio = 5.0
	enable_periodic_fsck = true
	lazy_itable_init = false
	no_discard = true
	default_mntopts = ^acl
	creator_os = Linux

[fs_types]
	ext3 = {
		features = has_journal
	}
	ext4 = {
		features = has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize
	}
	small = {
		blocksize = 1024
		inode_ratio = 4096
	}
	floppy = {
		blocksize = 1024
		inode_ratio = 8192
	}
	news = {
		inode_ratio = 4096
	}
	largefile = {
		inode_ratio = 1048576
		blocksize = 4096
	}
	largefile4 = {
		inode_ratio = 4194304
		blocksize = 4096
	}
	hurd = {
	     blocksize = 4096
	     inode_size = 128
	     warn_y2038_dates = 0
	}