如上图，加了三个磁盘

现在，先开始做raid0

工具 mdadm

命令常用参数

分好区

[root@duwen113 ~]# mdadm -C /dev/md11 -l 0 -n 3 /dev/sdb1 /dev/sdc1 /dev/sdd1
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md11 started.
[root@duwen113 ~]# mdadm -Ds
ARRAY /dev/md11 metadata=1.2 name=duwen113.cn:11 UUID=6689430a:4d3a76e2:9a832442:bf61bdfa
[root@duwen113 ~]#

效果如下图

生成配置文件

[root@duwen113 ~]# fdisk /dev/md11

[root@duwen113 ~]# ls /dev/md*
/dev/md11  /dev/md11p1
[root@duwen113 ~]#

开始加密

[root@duwen113 ~]# ls /dev/md*
/dev/md11  /dev/md11p1
[root@duwen113 ~]# cryptsetup luksFormat /dev/md11p1
WARNING!
========
This will overwrite data on /dev/md11p1 irrevocably.
Are you sure? (Type uppercase yes): YES
Enter passphrase:                  //这里输入密码51cto.com
Verify passphrase:                 //这里输入密码51cto.com
[root@duwen113 ~]# cryptsetup luksOpen /dev/md11p1 ys_disk
Enter passphrase for /dev/md11p1:
[root@duwen113 ~]# mkdir /ys_disk
[root@duwen113 ~]# mkfs.xfs /dev/mapper/ys_disk
meta-data=/dev/mapper/ys_disk    isize=256    agcount=16, agsize=191872 blks=                       sectsz=4096  attr=2, projid32bit=1=                       crc=0        finobt=0
data     =                       bsize=4096   blocks=3069952, imaxpct=25=                       sunit=128    swidth=384 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=0
log      =internal log           bsize=4096   blocks=2560, version=2=                       sectsz=4096  sunit=1 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
[root@duwen113 ~]# mount /dev/mapper/ys_disk /ys_disk/
[root@duwen113 ~]# touch /root/cryptpasswd
[root@duwen113 ~]# cryptsetup luksAddKey /dev/md11p1 /root/cryptpasswd
Enter any passphrase:                   //这里输入密码51cto.com
[root@duwen113 ~]# cat /root/cryptpasswd
[root@duwen113 ~]# vim /etc/crypttab
[root@duwen113 ~]#
[root@duwen113 ~]# vim /etc/fstab
[root@duwen113 ~]# tail -1 $!
tail: cannot open '1823' for reading: No such file or directory
[root@duwen113 ~]# tail -1 /etc/fstab
/dev/mapper/ys_disk /ys_disk xfs defaults 0 0
[root@duwen113 ~]#

测试一下加密是否成功

看到那个红框了吧，是需要输入密码才可以进去的        //红框这里输入密码51cto.com

The  end