HP StorageWorks EVA Cluster Extension Software Administrator Guide (T3667-96045, April 2010)

The executable clxevalxcs is called by EVA Cluster Extension before volume group activation. This
checks the status of an EVA DR group associated with a volume group configured for use with an
RHCS service. If necessary, EVA Cluster Extension takes appropriate actions to allow access to the
volume group's physical disks before attempting to activate and mount the logical volume on a cluster
node.
Configuration overview
1. Configure the SMI-S server information and copy it to all of the cluster nodes. For instructions,
see “Configure the SMI-S server information” on page 58.
2. Create an RHCS shared resource. For instructions, see “Creating an RHCS EVA Cluster Extension
shared resource” on page 57.
3. Create an RHCS service using the EVA Cluster Extension shared resource. For instructions, see
“Creating an RHCS service using the EVA Cluster Extension shared resource” on page 58.
Creating an RHCS EVA Cluster Extension shared resource
After EVA Cluster Extension is installed, as described in the HP StorageWorks EVA Cluster Extension
Installation Guide, use Conga or the Cluster Configuration Tool (system-config-cluster) to create an
EVA Cluster Extension shared resource. This procedure is required as part of the initial EVA Cluster
Extension configuration procedure. After you complete this procedure, you do not need to repeat it
when you add services. Use one of the following procedures:
• Using Conga to create a shared resource, page 57
• Using system-config-cluster to create a shared resource, page 57
Using Conga to create a shared resource
To create an EVA cluster extension shared resource using Conga:
1. Log in to Conga.
2. Click the Cluster tab, and then select Cluster List.
3. Click the name of the cluster you want to administer.
4. Click Resources.
5. Click Add a Resource.
6. Select Script in the Select a Resource Type box.
7. Enter a name for the EVA Cluster Extension shared resource in the Name box. For example:
CLXEVA.
8. Enter /usr/share/cluster/clxeva.sh in the Full path to script file box.
9. Click Submit.
Using system-config-cluster to create a shared resource
To create an EVA cluster extension shared resource using system-config-cluster:
EVA Cluster Extension Software Administrator Guide 57