raid0+ Disk Encryption

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For example, add three disks

Now, let's start RAID0.

Tool Mdadm

Command Common parameters

-C or--creat	Create a new array	-R	Removing a device
-A	Activating a disk array	-L or--level=	Set the level of the disk array
-D or--detail	Print Array Device details	-N or--raid-devices=	Specify the number of array members (partitions/disks)
-S or--scan	Scan configuration file or/proc/mdstat to get array missing information	-X or--spare-devicds=	Specify the number of spare disks in the array
-F	Set the device status as a fault	-C or--chunk=	Sets the block chunk size of the array, in kilobytes
-A or--add	Add device to Array	-G or--grow	Change the size or shape of an array
-V	--verbose Show Details

Well-divided area

[Email protected] ~]# mdadm-c/dev/md11-l 0-n 3/dev/sdb1/dev/sdc1/dev/sdd1mdadm:defaulting to version 1.2 metadata Mdadm:array/dev/md11 started. [Email protected] ~]# mdadm-dsarray/dev/md11 metadata=1.2 name=duwen113.cn:11 uuid=6689430a:4d3a76e2:9a832442: Bf61bdfa[[email protected] ~]#

Effects such as

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Build configuration file

[Email protected] ~]# Fdisk/dev/md11

[Email protected] ~]# Ls/dev/md*/dev/md11/dev/md11p1[[email protected] ~]#

Start encryption

[[email protected] ~]# ls /dev/md*/dev/md11  /dev/md11p1[[email protected]  ~]# cryptsetup luksFormat /dev/md11p1WARNING!========This will overwrite  data on /dev/md11p1 irrevocably. are you sure?  (Type uppercase yes): yes  enter passphrase:                   // Enter the password here 51cto.comverify passphrase:                  //Enter the password here 51cto.com[[email protected] ~]# cryptsetup luksopen  /dev/md11p1 ys_diskenter passphrase for /dev/md11p1:[[email protected] ~]#  mkdir /ys_disk[[email protected] ~]# mkfs.xfs /dev/mapper/ys_diskmeta-data=/dev /mapper/ys_disk    isize=256    agcount=16, agsize=191872 blks        =                         sectsz=4096  attr=2, projid32bit=1        =                         crc=0        finobt=0data      =                        bsize=4096   blocks=3069952, imaxpct=25         =                        sunit=128    swidth=384  blksnaming   =version 2               Bsize=4096   ascii-ci=0 ftype=0log      =internal log            bsize=4096   blocks=2560,  version=2        =                        sectsz=4096   sunit=1 blks, lazy-count=1realtime =none                    extsz=4096   blocks=0,  rtextents=0[[email protected] ~]# mount /dev/mapper/ys_disk /ys_disk/[[email  protected] ~]# touch /root/cryptpasswd[[email protected] ~]# cryptsetup  luksaddkey /dev/md11p1 /root/cryptpasswdEnter any passphrase:                    //Enter the password here 51cto.com[[email protected] ~]#  cat /root/cryptpasswd[[email protected] ~]# vim /etc/crypttab[[email  protected] ~]#[[email protected] ~]# vim /etc/fstab[[email protected] ~]#  tail -1 $!tail: cannot open  ' 1823 '  for reading: no such  file or directory[[email protected] ~]# tail -1 /etc/fstab/dev/mapper /ys_disk /ys_disk xfs defaults 0 0[[email protected] ~]#

Test if encryption is successful

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See that red box, it is necessary to enter the password to go in//red box here Enter the password 51cto.com

The end

This article is from the "duwers" blog, make sure to keep this source http://duwers.blog.51cto.com/7376225/1790967

raid0+ Disk Encryption