ASMlib操作系统包安装与配置asmdisk磁盘
1.添加6块硬盘，每块100g。无论是热加还是冷加，无论是加硬盘，用san存储划lun，或者再加上多路径，都是可以这么做的。 在操作系统层，能识别这样的lun，下面的sdb就是一个刚划分的300g的lun（也就是硬盘，或者裸块设备）。[root@pri ~]# cd /dev[root@pri de
1.添加6块硬盘，每块100g。无论是热加还是冷加，无论是加硬盘，用san存储划lun，或者再加上多路径，都是可以这么做的。在操作系统层，能识别这样的lun，下面的sdb就是一个刚划分的300g的lun（也就是硬盘，或者裸块设备）。 [root@pri ~]# cd /dev [root@pri dev]# ls -l | grep sd brw-r----- 1 root disk 8, 0 Apr 11 12:21 sda brw-r----- 1 root disk 8, 1 Apr 11 12:21 sda1 brw-r----- 1 root disk 8, 2 Apr 11 12:21 sda2 brw-r----- 1 root disk 8, 16 Apr 11 12:21 sdb
分区 我们对硬盘进行分区，后续把分区分别作为asm磁盘。其实就一块机械硬盘，根本没必要分区再做asm。 只有多块硬盘的时候，可以用asm做镜像与条带化等。如果存储已经做了raid，给我划分的lun我也没必要再做分区，直接可以加为asm了。 当然，比如有/dev/sda，/dev/sdb两块机械硬盘，我可以分别划分出/dev/sda1、/dev/sda2、/dev/sdb1、/dev/sdb2，然后摘取/dev/sda1与/dev/sdb1出来联合做一个asm disk1.
[root@pri dev]# fdisk /dev/sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable. The number of cylinders for this disk is set to 39162. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 1 First cylinder (1-39162, default 1): 1 Last cylinder or +size or +sizeM or +sizeK (1-39162, default 39162): 60 Command (m for help): n Command action e extended p primary partition (1-4) 2 Invalid partition number for type `2' Command action e extended p primary partition (1-4) p Partition number (1-4): 2 First cylinder (61-39162, default 61): 61 Last cylinder or +size or +sizeM or +sizeK (61-39162, default 39162): 120 Command (m for help): n Command action e extended p primary partition (1-4) 3 Invalid partition number for type `3' Command action e extended p primary partition (1-4) p Partition number (1-4): 3 First cylinder (121-39162, default 121): 121 Last cylinder or +size or +sizeM or +sizeK (121-39162, default 39162): 180 Command (m for help): n Command action e extended p primary partition (1-4) p Selected partition 4 First cylinder (181-39162, default 181): 181 Last cylinder or +size or +sizeM or +sizeK (181-39162, default 39162): 240 Command (m for help): n You must delete some partition and add an extended partition first Command (m for help): m Command action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition l list known partition types m print this menu n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only) Command (m for help): d Partition number (1-4): 4 Command (m for help): n Command action e extended p primary partition (1-4) e Selected partition 4 First cylinder (181-39162, default 181): Using default value 181 Last cylinder or +size or +sizeM or +sizeK (181-39162, default 39162): 240 Command (m for help): n First cylinder (181-240, default 181): Using default value 181 Last cylinder or +size or +sizeM or +sizeK (181-240, default 240): 210 Command (m for help): n First cylinder (211-240, default 211): Using default value 211 Last cylinder or +size or +sizeM or +sizeK (211-240, default 240): Using default value 240 Command (m for help): m Command action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition l list known partition types m print this menu n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only) Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [root@pri dev]# pwd /dev [root@pri dev]# ls | grep sd sda sda1 sda2 sdb sdb1 sdb2 sdb3 sdb4 sdb5 sdb6
我们将sdb这块裸设备，分区称sdb1-sdb6，但这些sdb1-6也并不含文件系统，也就是说，还没被文件系统格式化。
从官方网站下载oracle程序包 pri:orcl2 > uname -a Linux pri 2.6.18-308.el5 #1 SMP Fri Jan 27 17:17:51 EST 2012 x86_64 x86_64 x86_64 GNU/Linux http://www.oracle.com/technetwork/topics/linux/asmlib oracleasmlib-2.0 - ASM库 oracleasm-support-2.0 - utilities needed to administer ASMLib 管理ASMlib所需的实用程序 oracleasm - a kernel module for the Oracle ASM library ASM库的内核模块
结果最后只能装上这三个。
-rw-r--r-- 1 root root 25460 Apr 11 18:34 Z喎?http://www.2cto.com/kf/ware/vc/" target="_blank" class="keylink">vcmFjbGVhc20tMi42LjE4LTMwOC4yNC4xLmVsNS0yLjAuNS0xLmVsNS54ODZfNjQucnBtPC9wPgo8cD4tcnctci0tci0tIDEgcm9vdCByb290IDkwMjI1IEFwciAxMSAxODozNiBvcmFjbGVhc20tc3VwcG9ydC0yLjEuOC0xLmVsNS54ODZfNjQucnBtPC9wPgo8cD4tcnctci0tci0tIDEgcm9vdCByb290IDE0MTc2IEFwciAxMSAxODozNiBvcmFjbGVhc21saWItMi4wLjQtMS5lbDUueDg2XzY0LnJwbTwvcD4KCjxicj4KCjxicj4KCrbU09pkamm1pcr9vt2/4tPDu6fAtNewo6y+zbK708O31mdyaWTTw7un0+tvcmFjbGXTw7unwcuhowq+3cu1sru9qGFzbWFkbWlutci1yLXE1+mjrMTHw7S+zb/J0tTTw8bVzai1xG9yYWNsZdPDu6fSstO109Bhc21kYmHIqM/eoaMKCsztvNPDv7j2vdq147XEL2V0Yy9zZWN1cml0eS9saW1pdHMuY29uZgpvcmFjbGUgc29mdCBucHJvYyAyMDQ3Cm9yYWNsZSBoYXJkIG5wcm9jIDE2Mzg0Cm9yYWNsZSBzb2Z0IG5vZmlsZSAxMDI0Cm9yYWNsZSBoYXJkIG5vZmlsZSA2NTUzNgpvcmFjbGUgc29mdCBjb3JlIHVubGltaXRlZApvcmFjbGUgc29mdCBjb3JlIHVubGltaXRlZAoKzO2808O/uPa92rXjtcQvZXRjL3BhbS5kL2xvZ2luzsS8/gpzZXNzaW9uIHJlcXVpcmVkIHBhbV9saW1pdHMuc28KCrbU09pCb3VybmWhokJhc2i78ktvcm4gc2hlbGyjrL2r0tTPwsTayN2807W9w7+49r3ateO1xC9ldGMvcHJvZmlsZc7EvP7W0KGjCmlmIFsgJFVTRVIgPSAmcXVvdDtvcmFjbGUmcXVvdDtdIA=="| [ $USER = "grid" ];then
if [ $SHELL = "/bin/ksh" ];then
ulimit -u 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
umask 022
fi
[root@erpdb mapper]# /usr/sbin/oracleasm createdisk data1 /dev/mapper/mpath0p7
Writing disk header: done
Instantiating disk: done
配置ASMLib，不加-i就是显示当前配置，然后执行oracleasm init就等同于之前-i的指令。
/usr/sbin/oracleasm configure -i
配置之前：
[root@pri asmlib]# /usr/sbin/oracleasm configure
ORACLEASM_ENABLED=false
ORACLEASM_UID=
ORACLEASM_GID=
ORACLEASM_SCANBOOT=true
ORACLEASM_SCANORDER=""
ORACLEASM_SCANEXCLUDE=""
ORACLEASM_USE_LOGICAL_BLOCK_SIZE="false"
配置：
[root@pri asmlib]# /usr/sbin/oracleasm configure -i
Configuring the Oracle ASM library driver.
This will configure the on-boot properties of the Oracle ASM library
driver. The following questions will determine whether the driver is
loaded on boot and what permissions it will have. The current values
will be shown in brackets ('[]'). Hitting
配置之后：
[root@pri asmlib]# /usr/sbin/oracleasm configure
ORACLEASM_ENABLED=true
ORACLEASM_UID=oracle
ORACLEASM_GID=dba
ORACLEASM_SCANBOOT=true
ORACLEASM_SCANORDER=""
ORACLEASM_SCANEXCLUDE=""
ORACLEASM_USE_LOGICAL_BLOCK_SIZE="false"
为asm添加asm磁盘
此时/dev/sdb1只是操作系统认识的分区，我要将其设为让ASM也认识。
/usr/sbin/oracleasm createdisk data1 /dev/sdb1
每个节点以root输入，ASM磁盘对每个节点可用。
/usr/sbin/oracleasm scandisks
/usr/sbin/oracleasm listdisks（检验一下）
[root@pri asmlib]# /usr/sbin/oracleasm createdisk data1 /dev/sdb1
Writing disk header: done
Instantiating disk: failed
Clearing disk header: done
[root@pri asmlib]#
[root@pri asmlib]# /usr/sbin/oracleasm createdisk data1 /dev/sdb2
Writing disk header: done
Instantiating disk: failed
Clearing disk header: done
[root@pri asmlib]# /usr/sbin/oracleasm createdisk data1 /dev/sdb3
Writing disk header: done
Instantiating disk: failed
Clearing disk header: done
[root@pri asmlib]# /usr/sbin/oracleasm createdisk data1 /dev/sdb4
Writing disk header: failed
Unable to label device "/dev/sdb4"
[root@pri asmlib]# cd /dev
[root@pri dev]# ls | grep sd
sda
sda1
sda2
sdb
sdb1
sdb2
sdb3
sdb4
sdb5
sdb6
不知道为什么，我虽然有sdb4,但是这样会失败，是不是扩产分区就不能用来做asm盘的。
每个节点以root输入，ASM磁盘对每个节点可用。
[root@pri dev]# /usr/sbin/oracleasm scandisks
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...
下面这个必须配置上，不然不能装GI，这个要跟vip在同一个网段上，并且不能是本机ip，也不能使已经使用的。
/etc/hosts
10.60.17.150 pri-scan
如果出现[ins-40724] no locally defined network interface matches the scan subnet.报错，重启下主机就好。
后来又发现有报错，在如下这个界面。好像要再再/etc/hosts中，弄一个pri-vip，随便弄一个跟公网不同一个网段，但地址不一样的ip才能通过。
[root@pri ~]# /usr/sbin/oracleasm createdisk data1 /dev/sdb1
Writing disk header: done
Instantiating disk: failed
Clearing disk header: done
[root@pri ~]# vi /var/log/oracleasm
Creating /dev/oracleasm mount point: /dev/oracleasm
Loading module "oracleasm": failed
Unable to load module "oracleasm"
Cleaning any stale ASM disks...
Loading module "oracleasm": failed
Unable to load module "oracleasm"
最后发现，官网上给下载的是oracle linux的asm包。
那redhat 的怎么办呢？原来redhat的光碟自带有iso文件。
[root@erpp1 Server]# ls " grep oracleasm
oracleasm-2.6.18-274.el5-2.0.5-1.el5.x86_64.rpm
oracleasm-2.6.18-274.el5debug-2.0.5-1.el5.x86_64.rpm
oracleasm-2.6.18-274.el5xen-2.0.5-1.el5.x86_64.rpm
oracleasm-support-2.1.7-1.el5.x86_64.rpm
我就是下载了如下两个，rpm -ivh ，其余两个安装不了。
oracleasm-support-2.1.7-1.el5.x86_64.rpm
oracleasm-2.6.18-274.el5-2.0.5-1.el5.x86_64.rpm
[root@pri mnt]# cd /mnt
[root@pri mnt]# mkdir cdrom
[root@pri mnt]# mount /dev/cdrom /mnt/cdrom
mount: block device /dev/cdrom is write-protected, mounting read-only
发现还是不行。
将之前下载的64bit的oracleasmlib-2.0.4-1.el5.x86_64.rpm也上传上去，安装上。
也不行。尝试重启一下。
[root@erpp1 ~]# /usr/sbin/oracleasm createdisk data1 /dev/sdc1
Writing disk header: done
Instantiating disk: done
成功了。可能刚才直接重启也可以，不用加一个rpm包，也可能要。反正重启是必须的。
[root@erpp1 ~]# /usr/sbin/oracleasm createdisk data1 /dev/sdc1
Writing disk header: done
Instantiating disk: done
[root@erpp1 ~]# /usr/sbin/oracleasm createdisk data2 /dev/sdb1
Writing disk header: done
Instantiating disk: done
[root@erpp1 ~]# /usr/sbin/oracleasm createdisk data3 /dev/sdd1
Writing disk header: done
Instantiating disk: done
[root@erpp1 ~]# /usr/sbin/oracleasm createdisk data4 /dev/sde1
Writing disk header: done
Instantiating disk: done
[root@erpp1 ~]# /usr/sbin/oracleasm scandisks
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...
[root@erpp1 ~]#
[root@erpp1 ~]# /usr/sbin/oracleasm listdisks 或者service oracleasm listdisks
DATA1
DATA2
DATA3
DATA4
有了这4个ASM盘后，开始装GI。
如果要删除 ASM磁盘可通过以下命令：
[root@node1 ~]#/etc/init.d/oracleasm deletedisk ASMDISK5