oot@plab:~# cryptsetup -y luksFormat /dev/hda3

WARNING!
========
This will overwrite data on /dev/hda3 irrevocably.

Are you sure? (Type uppercase yes): YES
Enter LUKS passphrase:
Verify passphrase:
Unable to obtain sector size for /dev/hda3Failed to setup dm-crypt key mapping.
Check kernel for support for the aes-cbc-essiv:sha256 cipher spec and verify that /dev/hda3 contains at least 133 sectors.
Failed to write to key storage.
Command failed.root@plab:~# lsmod | grep aes
aes                    28864  0
root@plab:~# lsmod | grep sha256
sha256                 12288  0
root@plab:~#