Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 Overview page 31

Shared storage for use in Red Hat Cluster Suite requires that you be running the
cluster logical volume manager daemon (
Volume Management agents (HA-LVM). If you are not able to use either the
daemon or HA-LVM for operational reasons or because you do not have
clvmd
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
locking.
Figure 1.14. CLVM Overview
You can configure CLVM using the same commands as LVM2, using the LVM graphical user
interface (refer to Figure 1.15, "LVM Graphical User
configuration function of the Conga cluster configuration graphical user interface (refer to
Cluster Logical Volume Manager
) or the High Availability Logical
clvmd
/etc/lvm/lvm.conf
Interface"), or using the storage
for cluster-wide
21