Encrypt a new file system under RHEL6.4
1. View the size of disk space
2. Create a logical volume
3. View created logical volume size
4. Initialize the partition to be encrypted
5. Set the open name of the encrypted partition
6. View generated device names
7.. Format encrypted partitions
8. Create a directory and mount it
9. Check whether the mount is successful
10. Set boot auto mount
(1) Create a file to store the key
(2) View the generated key file
(3) Change the properties of the key file
(4) Add password to key file
(5) Modify the/etc/crypttab file
(6) Modify the/etc/fstab file
(7) Restart the system
(8) Verify whether the automatic mount is successful
