ext3 filesystem features ext_attr and needs_recovery

[Fernando Gozalo]

Hi,

A partition formatted at install has this features:

Filesystem features: has_journal ext_attr resize_inode dir_index filetype
needs_recovery sparse_super large_file


I have reformatted a partition: mkfs.ext3 -b 1024 -i 4096 /dev/sda3

and now have lost some features:

Filesystem features: has_journal resize_inode dir_index filetype sparse_super


How can I recover ext_attr and needs_recovery features?
Well, do I really need them?

Thanks,
Fernando.