此内容只在kernel 2.6, oracle 10.2.0.2 以上有效. linux LVM 在oracle 10.2.0.2

不支持块设备(Notes: 357492.1), 所以只可以在fdisk /dev/sdx

下创建裸设备.否则在向LVM创建的裸设备COPY文件时会出现如下错误.

============================================================

RMAN> run{

2> allocate channel ch0 type disk;

3> copy datafile '/oracle/test01.dbf' to '/dev/raw/raw1';

4> }

using target database control file instead of recovery catalog

allocated channel: ch0

channel ch0: sid=159 devtype=DISK

Starting backup at 13-JAN-09

channel ch0: starting datafile copy

input datafile fno=00005 name=/oracle/test01.dbf

released channel: ch0

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03009: failure of backup command on ch0 channel at 01/13/2009 09:10:09

ORA-19504: failed to create file "/dev/raw/raw1"

ORA-27094: raw volume used can damage partition table

Additional information: -2

Additional information: 1048576000

============================================================

1.版本

[root@LGXRH1 sysconfig]# uname -a

Linux LGXRH1 2.6.9-78.ELsmp #1 SMP Wed Jul 9 15:39:47 EDT 2008 i686 i686 i386 GNU/Linux

2.创建PV

[root@LGXRH1 vg01]# pvcreate /dev/sde

Physical volume "/dev/sde" successfully created

3.创建VG

[root@LGXRH1 vg01]# vgcreate vg01 /dev/sde

Volume group "vg01" successfully created

查看VG

[root@LGXRH1 vg01]# vgs

VG   #PV #LV #SN Attr   VSize VFree

vg01   1   0   0 wz--n- 8.00G 8.00G

4.创建LV

[root@LGXRH1 vg01]# lvcreate -L 1000M -n lvm01 vg01

Logical volume "lvm01" created

[root@LGXRH1 vg01]# lvs

LV    VG   Attr   LSize    Origin Snap% Move Log Copy% Convert

lvm01 vg01 -wi-a- 1000.00M

5.绑定到raw

[root@LGXRH1 vg01]raw /dev/raw/raw1 /dev/vg01/lvm01

/dev/raw/raw1: bound to major 253, minor 0

使用raw命令绑定的裸设备在重启后会失效。所以需要修改/etc/sysconfig/rawdevices配置文件，在文件中

加入如下内容(每个裸设备一行)：

/dev/raw/raw1 /dev/vg01/lvm01

最后使得裸设备生效，并且在机器启动的时候就自动加载

执行 /etc/init.d/rawdevices restart 使裸设备生效

执行 /sbin/chkconfig rawdevices on 保证机器启动的时候裸设备能够加载，这一步很重要

查询主机现有的裸设备

raw -qa

6.授权

[root@LGXRH1 sysconfig]# chown -R oracle.dba /dev/vg01

修改配置文件/etc/udev/permissions.d/50-udev.permissions

注释掉raw/*:root:disk:0660

添加新行raw/*:oracle:dba:0660

posted on 2009-09-30 00:20 旅途 阅读(269) 评论(0)  编辑 收藏 引用 所属分类: LINUX基础、管理