Managing Serviceguard A.11.20, March 2013

cvm_disk_group:cvm_dg0_node1|cvm_activation_mode=all=sw
cvm_disk_group:cvm_dg2_node1|cvm_disk_group=cvm_dg2_node1
cvm_disk_group:cvm_dg2_node1|cvm_activation_mode=all=sw
cfs_mount_point:/mnt1|cfs_volume=cvm_dg1_node1/lvol1
cfs_mount_point:/mnt3|cfs_volume=cvm_dg0_node1/lvol3
Guidelines for Migrating from Legacy CFS Package to Modular CFS Package
• You must migrate the legacy CFS packages to modular CFS package only when the package
is offline.
• It is recommended that all the disk groups and mount points used by an application in a
package be consolidated into one single modular package so that the dependencies need
not be configured explicitly in the configuration files. It is also recommended not to share the
consolidated modular package between applications unless the applications are interdependent.
• A mount point in the consolidated modular package must have its disk groups in the same
package and vice versa.
• It is not recommended to configure the storage belonging to different applications into one
modular package.
• All the disk group and mount point packages that are consolidated into the modular package
must be configured on the same set of nodes in the cluster.
• The storage checkpoint and snapshot packages cannot be merged with other general purpose
disk group and mount point packages. It is recommended that all checkpoint and snapshot
packages are merged into individual modular checkpoint and snapshot packages respectively.
However, configuring diskgroups in snapshot packages is allowed to enable consolidation
of storage required by snapshots in the same package.
• When you have Metrocluster for Oracle RAC clusters on different sites, the same package
configuration must be present on all the sites for modular CFS packages. In other words, there
should be an exact mirror copy of the package configuration on all the sites in a Metrocluster
for Oracle RAC cluster environment.
Use Case Scenarios — Migrating Legacy CFS Packages to Modular CFS Packages
Use Case 1: Migration of application using two disk groups
Figure 37 depicts the legacy style of packaging where a separate package is created for each
disk group and mount point in the cluster. The disk groups cvm_dg1 and cvm_dg2 are configured
in the packages SG-CFS-DG1 and SG-CFS-DG2 respectively. The mount points /cfs1 and /cfs2
are configured on cvm_dg1/lvol1 and cvm_dg2/lvol2 in the packages SG-CFS-MP-1 and
SG-CFS-MP-2 respectively.
218 Building an HA Cluster Configuration