The following page describes steps to build and test oracleasm kernel module for RHEL5
1. Steps to build oracleasm kernel module
a. Download oracleasm source
Source for oracleasm source is available at the following location.
http://oss.oracle.com/projects/oracleasm/files/sources/ eg: wget http://oss.oracle.com/projects/oracleasm/dist/files/sources/oracleasm-2.0.5.tar.gz
NOTE: Always download the required version or the latest tar ball
b. Configure/Build oracleasm rpm
Run configure to setup for the right kernel and then run make to build the driver.
a. tar -zxvf oracleasm-2.0.5.tar.gz
b. cd oracleasm-2.0.5
c. ./configure --with-kernel=/usr/src/kernels/<kernel version>
eg: ./configure --with-kernel=/usr/src/kernels/2.6.18-92.el5-i686
(above step sets up the build against the specified kernel)
d. make PKG_VERSION=<pkg version> rhel5_<kernel version>_rpm
eg: make PKG_VERSION=1 rhel5_2.6.18-92.el5_rpm
(PKG_VERSION defines package version. For <pgk version verify the following page
http://www.oracle.com/technology/software/tech/linux/asmlib/rhel5.html
and use the same value that was used for other architectures. )
2. Installation and Testing of oracleasm driver
When you build a new oracleasm driver module, run the following steps to verify the correctness of the new driver.
a. Make sure oracleasm-support rpm is installed
rpm -qa|grep oracleasm-support-2.1.1
b. Since you are going to install and test oracleasm rpm, boot system in the right kernel version
uname -a (verify kernel version and architecture and pick the right oracleasm driver rpm) rpm -ivh oracleasm-2.6.9-78.0.17.EL-2.0.5-1.el4.x86_64.rpm
c. Once oracleasm rpm is installed, start the driver
[root@el532-1 ~]# oracleasm init Loading module "oracleasm": oracleasm Mounting ASMlib driver filesystem: /dev/oracleasm
d. Now verify if any disks are already configured
[root@el532-1 ~]# oracleasm scandisks Reloading disk partitions: done Cleaning any stale ASM disks... Scanning system for ASM disks... Instantiating disk "VOL2"
e. List disks
[root@el532-1 ~]# oracleasm listdisks VOL2
f. Delete a disk if it already exist
[root@el532-1 ~]# oracleasm deletedisk VOL2 Clearing disk header: done Dropping disk: done
g. Create a new asmdisk
[root@el532-1 ~]# oracleasm createdisk VOL2 /dev/hdb1 Writing disk header: done Instantiating disk: done
h. Verify it's created
[root@el532-1 ~]# oracleasm querydisk /dev/hdb1 Device "/dev/hdb1" is marked an ASM disk with the label "VOL2"