Linux平台下裸设备的绑定：

Linux平台下裸设备的绑定：

运用RAW绑定

方法一 raw的配置（1）

[root@qs-dmm-rh2 mapper]# cat /etc/rc.local

#!/bin/sh

#

# This script will be executed *after* all theother init scripts.

# You can put your own initialization stuff inhere if you don't

# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local

#####

# Oracle Cluster Voting disks

#####

chown oracle:oinstall /dev/mapper/voting*

chmod 660 /dev/mapper/voting*

raw /dev/raw/raw5 /dev/mapper/votingdiskp1

raw /dev/raw/raw6 /dev/mapper/votingdiskp2

raw /dev/raw/raw7 /dev/mapper/votingdiskp3

raw /dev/raw/raw8 /dev/mapper/votingdiskp4

#sleep 2

chown oracle:oinstall /dev/raw/raw5

chown oracle:oinstall /dev/raw/raw6

chown oracle:oinstall /dev/raw/raw7

chown oracle:oinstall /dev/raw/raw8

chmod 660 /dev/raw/raw5

chmod 660 /dev/raw/raw6

chmod 660 /dev/raw/raw7

chmod 660 /dev/raw/raw8

方法一（2）

[root@felix2 raw]# vi  /etc/rc.local

#!/bin/sh

#

# This script will be executed *after* all theother init scripts.

# You can put your own initialization stuff inhere if you don't

# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local

chown -R oracle:oinstall /dev/raw/raw*

chmod -R 660 /dev/raw/raw*

~

(1)编辑rawdevices的配置文件：

[root@felix2 sysconfig]# pwd

/etc/sysconfig

[root@felix2 sysconfig]# vi rawdevices

# rw device bindings

# format: <rawdev> <major> <minor>

#         <rawdev> <blockdev>

# example: /dev/raw/raw1 /dev/sda1

#         /dev/raw/raw2 8 5

#--加入�裸设备、块设备的绑定条目：

/dev/raw/raw1 /dev/sdb1

/dev/raw/raw2 /dev/sdc1

/dev/raw/raw3 /dev/sdd1

/dev/raw/raw4 /dev/sde1

（2）启动rawdevices服务：

service rawdevices start

（3）配置系统启动时，自己主动启动rawdevices服务：

chkconfig rawdevices on

（4）确认rawdevices服务成功启动，而且裸设备正确创建。先查看rawdevices服务状态：

service rawdevicesstatus

[root@felix2 sysconfig]# service rawdevices status

/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

再查看裸设备：

[root@felix2 sysconfig]# cd /dev/raw

[root@felix2 raw]# ll

total 0

crw-rw---- 1 oracle oinstall 162, 1 May 21 15:03raw1

crw-rw---- 1 oracle oinstall 162, 2 May 21 15:35raw2

crw-rw---- 1 oracle oinstall 162, 3 May 21 15:35raw3

crw-rw---- 1 oracle oinstall 162, 4 May 21 15:35raw4

[root@felix2 raw]#

（5）ASM是以Oracle用户身份执行的，要让ASM可以发现这些设备，必须更改这些设备的属主（owner）：

[root@felix2 raw]# chown oracle:oinstall/dev/raw/raw*

[root@felix2 raw]# ll

total 0

crw-rw---- 1 oracle oinstall 162, 1 May 21 15:03raw1

crw-rw---- 1 oracle oinstall 162, 2 May 21 15:37raw2

crw-rw---- 1 oracle oinstall 162, 3 May 21 15:37raw3

crw-rw---- 1 oracle oinstall 162, 4 May 21 15:37raw4

方法二 运用UDEV设备绑定：

改动/etc/udev/rules.d/60-raw.rules文件

# 如今我们把/dev/sdb1 知道到raw1上，就能够在/etc/udev/rules.d/60-raw.rules文件中加入�例如以下内容：

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

Cat >> /etc/udev/rules.d/60-raw.rules<< EOF

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

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

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

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

ACTION=="add",KERNEL=="raw[1-5]",OWNER="oracle", GROUP="oinstall", MODE="660"

EOF

重新启动UDEV服务：

[root@rac1 ~]# start_udev

[root@zrac1 asmfileapp-linux5.4]# ls -lat/dev/raw/raw*

crw-rw---- 1 oracle oinstall 162, 4 Apr 10 00:49/dev/raw/raw4

crw-rw---- 1 oracle oinstall 162, 3 Apr 10 00:49/dev/raw/raw3

crw-rw---- 1 oracle oinstall 162, 2 Apr 10 00:49/dev/raw/raw2

crw-rw---- 1 oracle oinstall 162, 1 Apr 10 00:49/dev/raw/raw1