Building Disaster Recovery Serviceguard Solutions Using Continentalclusters A.08.00

Run this command on the configuration node only. The cluster must be running on all the nodes
for the command to succeed.
NOTE: Both the -S and the -c options are specified.
The -S y option makes the volume group shareable, and the -c y option causes the cluster
ID to be written out to all the disks in the volume group. In effect, this command specifies the
cluster to which a node must belong in order to obtain shared access to the volume group.
Configuring the complex workload at the primary cluster
Install and configure the complex workload on the nodes in the primary cluster. Create Serviceguard
packages for the complex workload in the primary cluster. This package must be configured to
run on the nodes in the primary cluster. The procedure to configure a complex workload stack in
the primary cluster differs depending on CVM, CFS, and SLVM.
Configuring complex workload packages to use CFS
When the storage for the complex workload is configured on a Cluster File System (CFS), the
complex workload package must be configured to depend on the MNP package managing CFS
mount point through package dependency. With package dependency, the Serviceguard package
that starts the complex workload will not run until its dependent MNP package managing CFS
mount point is up, and will halt before the MNP package managing CFS mount point is halted.
Set up the following dependency conditions in the Serviceguard package configuration file:
DEPENDENCY_NAME <cfs_mp_pkg_name_dep>
DEPENDENCY_CONDITION <cfs_with_mp_pkg_name>=UP
DEPENDENCY_LOCATION SAME_NODE
Configuring complex workload packages to use CVM
When the storage for the complex workload is configured on a CVM disk groups, the complex
workload package must be configured to depend on the MNP package managing CVM disk
groups through package dependency. With package dependency, the Serviceguard package that
starts the complex workload will not run until its dependent MNP package managing CVM disk
group is up, and will halt before the MNP package managing CVM disk group is halted.
Set up the following dependency conditions in the Serviceguard package configuration file:
DEPENDENCY_NAME <cvm_mp_pkg_name_dep>
DEPENDENCY_CONDITION <cvm_with_mp_pkg_name>=UP
DEPENDENCY_LOCATION SAME_NODE
Configuring complex workload packages to use SLVM
When the storage for the complex workload is configured on an SLVM volume group, the complex
workload package must be configured to activate and deactivate the required storage in the
package configuration file.
vg <vgname>
vgchange_cmd “vgchange –a s”
Halting the complex workload in the primary cluster
Halt the complex workload stack on the node in the primary cluster using the cmhaltpkg command.
For example:
# cmhaltpkg complex_workload_pkg1
# cmhaltpkg complex_workload_pkg2
# cmhaltpkg complex_workload_pkg3
48 Configuring complex workloads in a Continentalclusters environment using SADTA