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配置裸设备
由于RHEL5中取消了rawdevices，如果不想将映射命令放到rc.local中的话，我们就需要将其配置到/etc/udev/rules.d/文件夹中
修改文件
[root@node1 ~]# vi /etc/udev/rules.d/60-raw.rules
增加如下内容：
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]", OWNER="oracle", GROUP="oinstall", MODE="640"
提示：要根据你的实际情况来配置
另外关于此处的配置有一点非常奇怪，我看到red hat官方文档中关于raw.rule的示例中说KERNEL==..或ENV{MAJOR}...只需要任意配置一个就可以，但我在具体配置过程中发现百试不爽，我尝试了各种组合发现都不生效，必须二者同时配置才可以，难道是俺用的linux内核版本太低了？百思不得其解，如有达人已深究其内幕，望助我解惑~~~~
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首先要您感谢奉献的这篇文章，获益匪浅。
关于上面这个问题，问题出在KERNEL=="这里"，没有严格参照配置文件的格式书写语法。或许是因为是由kernel实现，所以语法要求特别严格。其实在redhat官方文档都是含有"/dev/"的, 但是按照那样的写法，很不幸，行不通。 以下是我写的一个例子。
[root@rhdb1 ~]# more /etc/udev/rules.d/60-raw.rules
# This file and interface are deprecated.
# Applications needing raw device access should open regular
# block devices with O_DIRECT.
#
# Enter raw device bindings here.
#
# An example would be:
# ACTION=="add", KERNEL=="sda", RUN+="/bin/raw /dev/raw/raw1 %N"
# to bind /dev/raw/raw1 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=="sdc1", RUN+="/bin/raw /dev/raw/raw1 %N"
ACTION=="add", KERNEL=="sdd1", RUN+="/bin/raw /dev/raw/raw2 %N"
ACTION=="add", KERNEL=="sde1", RUN+="/bin/raw /dev/raw/raw3 %N"
ACTION=="add", KERNEL=="raw[1-3]", OWNER="oracle", GROUP="oinstall", MODE="0660"
==========================================================================================
关于raw资料的一些参考：
（1）RHEL-5-manual--- zh-CN -- release-notes
raw 设备映射
raw 设备接口在 红帽企业 Linux 5 里已经被取消了；raw 设备映射现在通过 udev 规则进行配置。
要配置 raw 设备映射，可以在 /etc/udev/rules.d/60-raw.rules 里加入以下格式的条目：
*
设备名称：
ACTION=="add", KERNEL="<device name>", RUN+="raw /dev/raw/rawX %N"
*
主／次号码：
ACTION=="add", ENV{MAJOR}="A", ENV{MINOR}="B", RUN+="raw /dev/raw/rawX %M %m"
用你需要绑定的设备名称替换 <device name>（如：/dev/sda1）。"A" 和 "B" 是设备的主／次号码，X 是系统使用的 raw 设备号码。
（2）http://kbase.redhat.com/faq/FAQ_103_9616.shtm
• Creating the raw devices:
Nevertheless, to create raw devices, add entries to /etc/udev/rules.d/60-raw.rules in the following formats:
For device names:
ACTION=="add", KERNEL=="<device name>", RUN+="raw /dev/raw/rawX %N"
For major / minor numbers:
ACTION=="add", ENV{MAJOR}="A", ENV{MINOR}="B", RUN+="raw /dev/raw/rawX %M %m"
Replace <device name> with the name of the device needed to bind (such as /dev/sda1). "A" and "B" are the major / minor numbers of the device needed for binding, an "X" is the raw device number that the system wants to use.
[ 本帖最后由 becvx 于 2008-8-31 18:00 编辑 ] |
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楼主: junsansi
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发表于 2008-8-21 14:14
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