HP Cluster Management Utility CMU Installation Guide with Serviceguard Version 4.0 (May 2009)

Command action

e extended

p primary partition (1-4)

Partition number (1-4): 2

First cylinder (2-51200, default 2):

Using default value 2

Last cylinder or +size or +sizeM or +sizeK (2-51200, default 51200):

Using default value 51200

Command (m for help): p

Disk /dev/sda: 53.6 GB, 53687091200 bytes

64 heads, 32 sectors/track, 51200 cylinders

Units = cylinders of 2048 * 512 = 1048576 bytes

Device Boot Start End Blocks Id System

/dev/sda1 1 1 1008 83 Linux

/dev/sda2 2 51200 52427776 83 Linux

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

2-3-7

Configure LVM

CAUTION:

Steps in this paragraph must be performed only on one

management server.

Create the logical volume

WARNING!

In commands in this section, the volume group name is “vgcmu” and the logical volume

name is “lvol0”. Those names are hard coded in “CMU SG package” configuration files which are part

of the CMU rpm. These files are described in section 2-6 “Creating the CMU SG package”. If you

choose to change these names, you must be careful to modify CMU package configuration file

accordingly.

# pvcreate -ff /dev/sda2

Really INITIALIZE physical volume "/dev/sda2" of volume group

"vgcmu" [y/n]? y

WARNING: Forcing physical volume creation on /dev/sda2 of volume

group "vgcmu"

Physical volume "/dev/sda2" successfully created

# vgcreate /dev/vgcmu /dev/sda2

Volume group "vgcmu" successfully created

# lvcreate -L 20G vgcmu

Logical volume "lvol0" created

Edit lvm.conf (on both nodes)

On both nodes, add the following line to /etc/lvm/lvm.conf:

tags { hosttags = 1 }