Using Serviceguard Extension for RAC, 9th Edition, September 2010

Displaying the Logical Volume Infrastructure

To display the volume group, use the vgdisplay command:

# vgdisplay -v /dev/vg_ops

Exporting the Logical Volume Infrastructure

Before the Oracle volume groups can be shared, their configuration data must be exported to

other nodes in the cluster. This is done either in Serviceguard Manager or by using HP-UX

commands, as shown in the following sections.

NOTE: Serviceguard Manager is the graphical user interface for Serviceguard. It is available

as a “plug-in” to the System Management Homepage (SMH). SMH is a web-based graphical

user interface (GUI) that replaces SAM as the system administration GUI as of HP-UX 11i v3

(but you can still run the SAM terminal interface. See “Using SAM” in the latest version of the

Managing Serviceguard user guide).

Exporting with LVM Commands

Use the following commands to set up the same volume group on another cluster node. In this

example, the commands set up a new volume group on a system known as ftsys10. This

volume group holds the same physical volume that was created on a configuration node known

as ftsys9.

To set up the volume group on ftsys10 (and other nodes), use the following steps:

1. On ftsys9, copy the mapping of the volume group to a specified file.

# vgexport -s -p -m /tmp/vg_ops.map /dev/vg_ops

2. Still on ftsys9, copy the map file to ftsys10 (and to additional nodes as necessary.)

# rcp /tmp/vg_ops.map ftsys10:/tmp/vg_ops.map

3. On ftsys10 (and other nodes, as necessary), create the volume group directory and the

control file named group:

# mkdir /dev/vg_ops

# mknod /dev/vg_ops/group c 64 0xhh0000

For the group file, the major number is always 64, and the hexadecimal minor number has

the format:

0xhh0000

where hh must be unique to the volume group you are creating. If possible, use the same

number as on ftsys9. Use the following command to display a list of existing volume

groups:

# ls -l /dev/*/group

4. Import the volume group data using the map file from node ftsys9. On node ftsys10

(and other nodes, as necessary), enter:

# vgimport -s -m /tmp/vg_ops.map /dev/vg_ops

Installing Oracle Real Application Clusters

NOTE: Some versions of Oracle RAC requires installation of additional software. Refer to your

version of Oracle for specific requirements.

Before installing the Oracle Real Application Cluster software, make sure the cluster is running.

82 Serviceguard Configuration for Oracle 9i RAC