Red Hat GLOBAL FILE SYSTEM 5.0, Руководство администратора

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Figure 1.1. LVM Logical Volume Components
For detailed information on the components of an LVM logical volume, see Chapter 2, LVM
Components .
3. Running LVM in a Cluster
The Clustered Logical Volume Manager (CLVM) is a set of clustering extensions to LVM. These
extensions allow a cluster of computers to manage shared storage (for example, on a SAN)
using LVM.
The
clmvd
daemon is the key clustering extension to LVM. The
clvmd
daemon runs in each
cluster computer and distributes LVM metadata updates in a cluster, presenting each cluster
computer with the same view of the logical volumes.
Figure 1.2, “CLVM Overview” shows a CLVM overview in a Red Hat cluster.
Running LVM in a Cluster
3