检查在机器中是否可以看到刚刚添加的虚拟盘：

[root@jyrac1 ~]# fdisk -l

Disk /dev/sda: 21.4 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          13      104391   83  Linux

/dev/sda2              14        2610    20860402+  8e  Linux LVM

Disk /dev/sdb: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

Disk /dev/sdc: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

Disk /dev/sdd: 32.2 GB, 32212254720 bytes

255 heads, 63 sectors/track, 3916 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

Disk /dev/sde: 32.2 GB, 32212254720 bytes

255 heads, 63 sectors/track, 3916 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

通过fdisk -l可以看看所有磁盘的状态，如果前期裸设备规划正确的话，在诸如/dev/sdb、/dev/sdc、/dev/sdd、/dev/sde下面是看不到任何分区信息的，这也表明这些磁盘都是干净的磁盘，不像/dev/sda那样不干净(有了文件系统)。下面我们要对/dev/sdb到/dev/sde的四块磁盘进行分区，分区过程如下图所示(这里以/dev/sdb为例，其他磁盘操作类似)：

磁盘分区

需要你输入的依次是"n/p/1/回车/回车/w"。

[root@jyrac1 ~]# fdisk /dev/sdb

Command (m for help): n

Command action

e   extended

p   primary partition (1-4)

p

Partition number (1-4): 1

First cylinder (1-130, default 1):

Using default value 1

Last cylinder or +size or +sizeM or +sizeK (1-130, default 130):

Using default value 130

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

[root@jyrac1 ~]#

所有磁盘分区完后

[root@jyrac1 ~]# fdisk -l

Disk /dev/sda: 21.4 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          13      104391   83  Linux

/dev/sda2              14        2610    20860402+  8e  Linux LVM

Disk /dev/sdb: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1         130     1044193+  83  Linux

Disk /dev/sdc: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

/dev/sdc1               1         130     1044193+  83  Linux

Disk /dev/sdd: 32.2 GB, 32212254720 bytes

255 heads, 63 sectors/track, 3916 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

/dev/sdd1               1        3916    31455238+  83  Linux

Disk /dev/sde: 32.2 GB, 32212254720 bytes

255 heads, 63 sectors/track, 3916 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

/dev/sde1               1        3916    31455238+  83  Linux

[root@jyrac1 ~]#

检查分区的结果：

[root@jyrac1 linux_5.4_asmlib]# cat /proc/partitions

major minor  #blocks  name

8     0   20971520 sda

8     1     104391 sda1

8     2   20860402 sda2

8    16    1048576 sdb

8    17    1044193 sdb1

8    32    1048576 sdc

8    33    1044193 sdc1

8    48   31457280 sdd

8    49   31455238 sdd1

8    64   31457280 sde

8    65   31455238 sde1

253     0   18743296 dm-0

253     1    2097152 dm-10

[root@racnode1 root]#

编辑/etc/udev/rules.d/60-raw.rules配置文件

#vi  /etc/udev/rules.d/60-raw.rules

加载裸设备,添加以下内容

1)设置分区与RAW对应关系

ACTION=="add", KERNEL=="/dev/sdb1",RUN+="/bin/raw /dev/raw/raw1 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="17",RUN+="/bin/raw /dev/raw/raw1 %M %m"

ACTION=="add", KERNEL=="/dev/sdc1",RUN+="/bin/raw /dev/raw/raw2 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="33",RUN+="/bin/raw /dev/raw/raw2 %M %m"

ACTION=="add", KERNEL=="/dev/sdd1",RUN+="/bin/raw /dev/raw/raw3 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="49",RUN+="/bin/raw /dev/raw/raw3 %M %m"

ACTION=="add", KERNEL=="/dev/sde1",RUN+="/bin/raw /dev/raw/raw4 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="65",RUN+="/bin/raw /dev/raw/raw4 %M %m"

KERNEL=="raw[1-4]", WNER="oracle", GROUP="oinstall", MODE="640"

2)设置RAW的权限

ACTION=="add", KERNEL=="raw1", WNER="root", GROUP="oinstall", MODE="640"

ACTION=="add", KERNEL=="raw2", WNER="oracle", GROUP="oinstall", MODE="660"

如果多个RAW的权限相同可以做以下设置，如raw1,raw2权限相同：

ACTION=="add", KERNEL=="raw[1-2]", WNER="oracle", GROUP="oinstall", MODE="660"

3.重启服务

#start_udev

[root@jyrac1 ~]# start_udev

Starting udev:   [  OK  ]

4.查看raw设备

ls /dev/raw/ -l

#ls -lrt /dev/raw 或者

#raw -aq

[root@jyrac1 ~]# ls /dev/raw/ -l

total 0

crw-r----- 1 oracle oinstall 162, 1 Nov  8 15:41 raw1

crw-r----- 1 oracle oinstall 162, 2 Nov  8 15:41 raw2

crw-r----- 1 oracle oinstall 162, 3 Nov  8 15:41 raw3

crw-r----- 1 oracle oinstall 162, 4 Nov  8 15:41 raw4

[root@jyrac1 ~]# ls -lrt /dev/raw

total 0

crw-r----- 1 oracle oinstall 162, 4 Nov  8 15:41 raw4

crw-r----- 1 oracle oinstall 162, 3 Nov  8 15:41 raw3

crw-r----- 1 oracle oinstall 162, 1 Nov  8 15:41 raw1

crw-r----- 1 oracle oinstall 162, 2 Nov  8 15:41 raw2

[root@jyrac1 ~]# raw -aq

/dev/raw/raw1:  bound to major 8, minor 17

/dev/raw/raw2:  bound to major 8, minor 33

/dev/raw/raw3:  bound to major 8, minor 49

/dev/raw/raw4:  bound to major 8, minor 65

[root@jyrac1 ~]#