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 ~]#