EVMS User Guide
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Chapter 15. Clustering operations

Table of Contents
15.1. Rules and restrictions for creating cluster containers
15.2. Example: create a private cluster container
15.2.1. Using the EVMS GUI
15.2.2. Using Ncurses
15.2.3. Using the CLI
15.3. Example: create a shared cluster container
15.3.1. Using the EVMS GUI
15.3.2. Using Ncurses
15.3.3. Using the CLI
15.4. Example: convert a private container to a shared container
15.4.1. Using the EVMS GUI
15.4.2. Using Ncurses
15.4.3. Using the CLI
15.5. Example: convert a shared container to a private container
15.5.1. Using the EVMS GUI
15.5.2. Using Ncurses
15.5.3. Using the CLI
15.6. Example: deport a private or shared container
15.6.1. Using the EVMS GUI
15.6.2. Using Ncurses
15.6.3. Using the CLI
15.7. Deleting a cluster container
15.8. Failover and Failback of a private container on Linux-HA
15.9. Remote configuration management
15.9.1. Using the EVMS GUI
15.9.2. Using Ncurses
15.9.3. Using the CLI
15.10. Forcing a cluster container to be imported

This chapter discusses how to configure cluster storage containers (referred to throughout this chapter as "cluster containers"), a feature provided by the EVMS Cluster Segment Manager (CSM).

Disks that are physically accessible from all of the nodes of the cluster can be grouped together as a single manageable entity. EVMS storage objects can then be created using storage from these containers.

Ownership is assigned to a container to make the container either private or shared. A container that is owned by any one node of the cluster is called a private container. EVMS storage objects and storage volumes created using space from a private container are accessible from only the owning node.

A container that is owned by all the nodes in a cluster is called a shared container. EVMS storage objects and storage volumes created using space from a shared container are accessible from all nodes of the cluster simultaneously.

EVMS provides the tools to convert a private container to a shared container, and a shared container to a private container. EVMS also provides the flexibility to change the ownership of a private container from one cluster node to another cluster node.

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Example: check a file system Rules and restrictions for creating cluster containers