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Figure 1.2. CLVM Overview

Logical volumes created with CLVM on shared storage are visible to all computers that have ac-

cess to the shared storage.

CLVM allows a user to configure logical volumes on shared storage by locking access to physic-

al storage while a logical volume is being configured. CLVM uses the locking services provided

by the high availability symmetric infrastructure.

Note

CLVM requires changes to the lvm.conf file for cluster-wide locking. For informa-

tion on configuring the lvm.conf file to support CLVM, see Section 1, “Creating

LVM Volumes in a Cluster”.

You configure LVM volumes for use in a cluster with the standard set of LVM commands or the

LVM graphical user interface, as described in Chapter 4, LVM Administration with CLI Com-

mands and Chapter 7, LVM Administration with the LVM GUI.

For information on installing LVM in a Red Hat Cluster, see Configuring and Managing a Red

Hat Cluster.

4. Document Overview

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Red Hat ENTERPRISE LINUX 5 - LOGICAL VOLUME MANAGER ADMINISTRATION Guide d'installation Page 13