首先，在vm虚拟机上添加一块硬盘，进入系统创建分区，我们以sdc1来划分lv
      [root@Oracle ~]# fdisk -l  –查看现在有分区
    确保有空余硬盘

      创建vg

      [root@oracle ~]# pvcreate /dev/sdc1

      查看pv信息
      [root@oracle ~]# pvdisplay /dev/sdc1    

      查看vg信息

      [root@oracle ~]# vgdisplay  

      创建lv
      [root@oracle ~]# lvcreate -n system01 -L 200M oradata
      [root@oracle ~]# lvcreate -n undotbs01 -L 200M oradata
      [root@oracle ~]# lvcreate -n control01 -L 50M oradata
      [root@oracle ~]# lvcreate -n redo01 -L 100M oradata
      [root@oracle ~]# lvcreate -n redo02 -L 100M oradata

      查看lv
      [root@oracle ~]# lvscan
      ACTIVE            ‘/dev/oradata/system01′ [200.00 MB] inherit
      ACTIVE            ‘/dev/oradata/undotbs’ [200.00 MB] inherit
      ACTIVE            ‘/dev/oradata/redo01′ [100.00 MB] inherit
      ACTIVE            ‘/dev/oradata/redo02′ [100.00 MB] inherit
      ACTIVE            ‘/dev/oradata/control01′ [52.00 MB] inherit

      赋权
      [root@oracle ~]# cd /dev/mapper
      [root@oracle mapper]# ll
      total 0
      crw——-  1 root root      10, 63 Aug 21 14:28 control
      brw-rw—-  1 root root 253,  4 Aug 21 18:38 oradata-control01
      brw-rw—-  1 root root 253,  2 Aug 21 18:22 oradata-redo01
      brw-rw—-  1 root root 253,  3 Aug 21 18:22 oradata-redo02
      brw-rw—-  1 root root 253,  0 Aug 21 18:20 oradata-system01
      brw-rw—-  1 root root 253,  1 Aug 21 18:21 oradata-undotbs

      [root@oracle mapper]# chown -R oracle:oinstall /dev/mapper/oradata*
      [root@oracle ~]# cd /dev/mapper
      [root@oracle mapper]# ll
      crw——-  1 root  root      10, 63 Aug 21 14:28 control
      brw-rw—-  1 oracle oinstall 253,  4 Aug 21 18:38 oradata-control01     类似格式

      [root@oracle ~]# cd /dev/oradata/
      [root@oracle oradata]# ll
      lrwxrwxrwx  1 root root 29 Aug 21 18:38 control01 -> /dev/mapper/oradata-control01  类似格式

      绑定裸设备
      [root@oracle oradata]# raw /dev/raw/raw1 /dev/mapper/oradata-system01  –注意，之前是没有/dev/raw目录的，执行后会自动创建
      dev/raw/raw1:  bound to major 253, minor 0
      [root@oracle oradata]# raw /dev/raw/raw2 /dev/mapper/oradata-undotbs01
      [root@oracle oradata]# raw /dev/raw/raw3 /dev/mapper/oradata-redo01
      [root@oracle oradata]# raw /dev/raw/raw4 /dev/mapper/oradata-redo02
      [root@oracle oradata]# raw /dev/raw/raw5 /dev/mapper/oradata-control01

      为了保证重启后，可以挂载裸设备，修改下面文件，添加内容
      # This file and interface are deprecated.
      # Applications needing raw device access should open regular
      # block devices with O_DIRECT.
      # raw device bindings
      # format: 
      #         
      # example: /dev/raw/raw1 /dev/sda1
      #          /dev/raw/raw2 8 5

      /dev/raw/raw1 /dev/mapper/oradata-system01
      /dev/raw/raw2 /dev/mapper/oradata-undotbs01
      /dev/raw/raw3 /dev/mapper/oradata-redo01
      /dev/raw/raw4 /dev/mapper/oradata-redo02
      /dev/raw/raw5 /dev/mapper/oradata-control01
      重启裸设备服务，验证是否能挂载
      [root@oracle ~]# /etc/init.d/rawdevices restart
      Assigning devices:
      /dev/raw/raw1  –>  /dev/mapper/oradata-system01
      /dev/raw/raw1:  bound to major 253, minor 0
      /dev/raw/raw2  –>  /dev/mapper/oradata-undotbs
      /dev/raw/raw3  –>  /dev/mapper/oradata-redo01
      /dev/raw/raw4  –>  /dev/mapper/oradata-redo02
      /dev/raw/raw5  –>  /dev/mapper/oradata-control01
      done

      给新创建的裸设备增加权限，以使oracle能使用
      [root@oracle ~]# cd /dev/mapper
      [root@oracle mapper]# ll
      total 0
      crw——-  1 root  root      10, 63 Aug 21 14:28 control
      brw-rw—-  1 oracle oinstall 253,  4 Aug 21 18:38 oradata-control01   类似格式
      [root@oracle mapper]# ls -l /dev/raw
      crw-rw—-  1 root disk 162, 1 Aug 21 19:43 raw1    类似格式
      这地方的权限不能直接使用chown –R oracle:oinstall /dev/raw/raw*来修改，由于由于/dev下的文件都是动态建立的，所以在OS重启后，属主仍会变成root:disk，要解决这个问题，可以把上面的命令写入到50-udev.permissions文件中, 这样每次开机后可以重新改变属主。
      修改/etc/udev/permissions.d/50-udev.permissions文件
      采用:/raw搜索
      将raw/*:root:disk:0660
      修改为raw/*:oracle:oinstall:0660，这个的意思是修改裸设备的默认属主为oracle:oinstall，默认的mode是0660。
      修改完后再通过chown –R oracle:oinstall /dev/raw/raw*来赋权。
      [root@oracle ~]# cd /dev/raw/
      [root@oracle raw]# ll
      total 0
      crw-rw—-  1 oracle oinstall 162, 1 Aug 21 19:43 raw1
      crw-rw—-  1 oracle oinstall 162, 2 Aug 21 19:43 raw2
      crw-rw—-  1 oracle oinstall 162, 3 Aug 21 19:43 raw3
      crw-rw—-  1 oracle oinstall 162, 4 Aug 21 19:43 raw4
      crw-rw—-  1 oracle oinstall 162, 5 Aug 21 19:43 raw5

      随后创建软连接
      [oracle@oracle prod2]$ pwd
      /u01/app/oracle/oradata/prod2
      [oracle@oracle prod2]$ ln -s /dev/raw/raw1 system01.dbf
      [oracle@oracle prod2]$ ln –s /dev/raw/raw2 undotbs01.dbf
      [oracle@oracle prod2]$ ln –s /dev/raw/raw3 redo01.rdo
      [oracle@oracle prod2]$ ln –s /dev/raw/raw4 redo02.rdo
      [oracle@oracle prod2]$ ln –s /dev/raw/raw5 control01.ctl