Building Disaster Recovery Serviceguard Solutions Using Metrocluster with 3PAR Remote Copy

Repeat steps 2 through 7 on all nodes in the cluster that require access to this disk group.
8. Login to the source disk site's 3PAR storage system. Reverse the direction of replication to
bring it back to its original direction.
cli% setrcopygroup reverse <rc_volume_group_name>
cli% startrcopygroup <rc_volume_group_name>
Configuring Modular Packages
A Metrocluster must be completed using Metrocluster 3PAR module dts/mc3parrc.
NOTE: The maximum number of Metrocluster packages that can be configured is 16. For more
information, see “Managing connections to 3PAR array” (page 60).
Perform the following steps on a node in a Metrocluster to configure a modular package using the
Metrocluster 3PAR module on the command line:
1. Run the following command to create a modular package configuration file using the
Metrocluster with 3PAR Remote Copy module dts/mc3parrc.
# cmmakepkg –m dts/mc3parrc pkgName.config
In this command, dts/mc3parrc is the Metrocluster with 3PAR Remote Copy module that
needs to be included to create a Metrocluster with 3PAR Remote Copy package configuration
file.
By default, the mc3parrc module includes only the Serviceguard volume group module.
If modules other than the Serviceguard modules need to be included, they must be explicitly
specified while creating the Metrocluster with 3PAR Remote Copy modular package
configuration file.
The following example shows the package IP, the filesystem, and the monitor subnet module
included along with the mc3parrc module.
# cmmakepkg –m dts/mc3parrc –m sg/filesystem –m sg/monitor_subnet
-m sg/package_ip temp.config
NOTE: Metrocluster is usually used with applications such as Oracle. So, the application
toolkit module must also be included when Metrocluster is used in conjunction with an
application.
For Example, when Metrocluster is used in conjunction with the Oracle toolkit, the Oracle
toolkit module and other required modules must also be included with the Metrocluster with
3PAR Remote Copy module.
Use the following command:
# cmmakepkg –m dts/mc3parrc –m sg/filesystem -m sg/package_ip -m\
ecmt/oracle/oracle temp.config
2. Edit the following attributes in the pkgName.config file.
a. Specify the package directory for the dts/dts/dts_pkg_dir attribute.
dts/dts/dts_pkg_dir /etc/cmcluster/pkg
b. Specify the DC1 nodes for the DC1_NODE_LIST parameter. Multiple names are defined
using a space as a separator between the names.
dts/3parrc/DC1_NODE_LIST “dc1_node1 dc1_node2”
c. Specify the DC2 nodes for the DC2_NODE_LIST parameter. Multiple names are defined
using a space as a separator between the names.
dts/3parrc/DC2_NODE_LIST “dc2_node1 dc2_node2”
22 Configuring an application in a Metrocluster environment