Red Hat Enterprise Linux 5 Cluster Suite Overview page 24

Chapter 1. Red Hat Cluster Suite Overview
Note
Shared storage for use in Red Hat Cluster Suite requires that you be running the cluster
logical volume manager daemon (clvmd) or the High Availability Logical Volume
Management agents (HA-LVM). If you are not able to use either the clvmd daemon or
HA-LVM for operational reasons or because you do not have the correct entitlements, you
must not use single-instance LVM on the shared disk as this may result in data corruption.
If you have any concerns please contact your Red Hat service representative.
Note
Using CLVM requires minor changes to /etc/lvm/lvm.conf for cluster-wide locking.
Figure 1.11. CLVM Overview
You can configure CLVM using the same commands as LVM2, using the LVM graphical user interface
Figure 1.12, "LVM Graphical User
(refer to
the Conga cluster configuration graphical user interface (refer to
User Interface") . Figure 1.14, "Creating Logical Volumes"
volumes from Linux partitions and shows the commands used to create logical volumes.
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Interface"), or using the storage configuration function of
Figure 1.13, "Conga LVM Graphical
shows the basic concept of creating logical