Redhat5取消了对raw devices的支持(不过5.5又重新支持了)，所以在redhat 5.5上刚安装的时候选择/etc/udev/rules.d/60-raw.rules作为配置文件

[root@rac1 ~]# vi /etc/udev/rules.d/60-raw.rules

# Enter raw device bindings here.

#

# An example would be:

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

# to bind /dev/raw/r aw1 to /dev/sda, or

#   ACTION=="add", ENV{MAJOR}=="8", ENV{MINOR}=="1", RUN+="/bin/raw /dev/raw/raw2 %M %m"

# to bind /dev/raw/raw2 to the device with major 8, minor 1.

ACTION=="add", KERNEL=="/dev/sdc1",RUN+="/bin/raw /dev/raw/raw1 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="33",RUN+="/bin/raw /dev/raw/raw1 %M %m"

ACTION=="add", KERNEL=="/dev/sdd1",RUN+="/bin/raw /dev/raw/raw2 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="49",RUN+="/bin/raw /dev/raw/raw2 %M %m"

ACTION=="add", KERNEL=="/dev/sde1",RUN+="/bin/raw /dev/raw/raw3 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="65",RUN+="/bin/raw /dev/raw/raw3 %M %m"

ACTION=="add", KERNEL=="/dev/sdf1",RUN+="/bin/raw /dev/raw/raw4 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="81",RUN+="/bin/raw /dev/raw/raw4 %M %m"

ACTION=="add", KERNEL=="/dev/sdg1",RUN+="/bin/raw /dev/raw/raw5 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="97",RUN+="/bin/raw /dev/raw/raw5 %M %m"

ACTION=="add", KERNEL=="/dev/sdh1",RUN+="/bin/raw /dev/raw/raw6 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="113",RUN+="/bin/raw /dev/raw/raw6 %M %m"

ACTION=="add", KERNEL=="/dev/sdi1",RUN+="/bin/raw /dev/raw/raw7 %N"

ACTION=="add", ENV{MAJOR}=="8",ENV{MINOR}=="129",RUN+="/bin/raw /dev/raw/raw7 %M %m"

KERNEL=="raw[1-7]", WNER="oracle", GROUP="oinstall", MODE="640" [root@rac1 ~]# start_udev

Starting udev: [  OK  ]

注：将/dev/mapper/ocr1p2之类分区作为kernel加入，在/dev/raw下面不会出现raw1；

        通过 Fdisk –l找出新加载的lun及其major/minor；

总之，这种配置比起rawdevices，个人感觉操作上麻烦很多。

……..

 在安装clusterware的时候报告如下错误:

The specified shared raw partition /dev/raw/raw3 may not have correct permission. Verify that the partition is owned by Oracle user.