Sample Configurations with SGeRAC and Oracle RAC 10gR2, March 2009

Creating volume group and logical volumes

1. Initialize LVM disk on node (“eenie”)

# pvcreate /dev/rdsk/c4t3d0

2. Create the volume group on node (“eenie”).

# mkdir /dev/vg_ops

# mknod /dev/vg_ops/group c 64 0x070000

Note: <0x070000> is the minor number on this sample configuration.

# vgcreate /dev/vg_ops /dev/dsk/c4t3d0

# vgextend /dev/vg_ops /dev/dsk/c5t3d0

Note: <c5t3d0> is a redundant link to <c4t3d0>

3. Create logical volumes on node (“eenie”). For each of the logical volumes in the worksheet,

create the logical volumes.

# lvcreate –L <size> -n <lv name> <vg name>

Example:

# lvcreate -L 128 –n ora_ocr /dev/vg_ops

Repeat this step for each logical volume specified in the worksheet.

4. Export Volume Group on node (“eenie”)

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

5. Import Volume Group on node (“meenie”). Assuming remote shell is configured, for example

permission on /.rhosts or /etc/host.equiv, and logon on node (“meenie”).

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

# mkdir /dev/vg_ops

# mknod /dev/vg_ops/group c 64 0x070000

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

Create cluster ASCII file

# cd /etc/cmcluster

# cmquerycl –C clm.asc –n eenie –n meenie

Edit the cluster ASCII file. A two node configuration requires either a Serviceguard quorum server or

cluster lock device. In this sample, the shared disk from the SLVM volume group is used as a cluster

lock device.

CLUSTER_NAME cluster_eenie