WARNING!

========

This will overwrite data on /dev/sda6 irrevocably.

Are you sure? (Type uppercase yes): YES

Enter LUKS passphrase:

Verify passphrase:

2、这个时候我们的分区已经被加密，我们要使用必须先解密

[root@honghaitao ~]# cryptsetup luksOpen /dev/sda6 tt

Enter passphrase for /dev/sda6:

[root@honghaitao ~]# ll /dev/mapper/tt

lrwxrwxrwx. 1 root root 7 Sep 21 05:16 /dev/mapper/tt -> ../dm-1

这里通过luksOpen来进行解密 后面‘tt’可以写随意的名字，然后会将加密卷/dev/vda6解锁为/dev/mapper/tt

3、解密的卷进行格式化

[root@honghaitao ~]# mkfs.ext4 /dev/mapper/tt

mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=1024 (log=0)

Fragment size=1024 (log=0)

Stride=0 blocks, Stripe width=0 blocks

3184 inodes, 12732 blocks

636 blocks (5.00%) reserved for the super user

First data block=1

Maximum filesystem blocks=13107200

2 block groups

8192 blocks per group, 8192 fragments per group

1592 inodes per group

Superblock backups stored on blocks:

        8193

Writing inode tables: done                           

Creating journal (1024 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 29 mounts or

180 days, whichever comes first.  Use tune2fs -c or -i to override.

4、把分区挂载到我们的系统上

-----在/mnt 下建立目录