HP EVA Cluster Extension Software Administrator Guide (5697-2445, July 2013)

4 CLI commands and utilities
Using its CLI and command-line utilities, EVA Cluster Extension can be integrated with almost any
cluster software for the Windows operating systems.
CLI commands
The EVA Cluster Extension CLI command clxevarun can be:
• Used as a standalone utility
• Integrated into any cluster software or custom application for Windows
clxevarun
Description Use clxevarun to manually prepare the application service's disk
set before an existing application service start procedure is invoked.
You can use clxevarun in custom solutions and startup scripts.
When using clxevarun, the status of the associated DR group is
checked to ensure that access to the vdisk(s) will occur under data
consistency and concurrency situations only.
You must invoke clxevarun before the application service disk
set can be activated; it is considered an online-only program.
However, the CLI features provide the same disaster recovery
features as the integrated versions of EVA Cluster Extension.
Syntax clxevarun [–version] [–forceflag] app_name
Operands Displays the EVA Cluster Extension version–version
–forceflag Force startup
app_name Application name configured in the UCF.cfg file
Example 1 This example assumes you have defined an APPLICATION tag
named my-exchange in the UCF.cfg file, and have specified all
necessary objects, including the DeviceGroup object, to map the
DR group to the application service my-exchange. EVA Cluster
Extension checks the vdisk set mapped to the application service
my-exchange, runs the necessary failover procedure, and
generates a return code.
# clxevarun my-exchange
Example 2 This example assumes you have defined an APPLICATION tag
named my-exchange in the UCF.cfg file and have specified all
necessary objects, including the DeviceGroup object, to map the
DR group to the application service my-exchange. EVA Cluster
Extension checks the vdisk set mapped to the application service
my-exchange and runs the necessary failover procedure to enable
read/write access to the vdisks.
# clxevarun -forceflag my-exchange
CLI commands 67