Managing Serviceguard A.11.20, March 2013

The following table lists the parameters that can be reconfigured online for the various modular
CFS packages:
Table 11 Package parameters that can be added, removed, or modified online
ModificationRemovalAdditionPackages
cvm_activation_modecvm_disk_groupcvm_disk_groupDisk group
NOTE: Modifying this parameter
typically works as an offline
operation. When you modify
cvm_activation_mode, the
changes are reflected only when
the package is restarted on a
given node or when a new node
is added. This is due to the
limitation that changing CVM
parameters while they are in use
is not supported by Symantec.
If a mount point is associated with
a disk group, when you modify
cvm_activation_mode, the
cfs_mount_options may be
incompatible with the new disk
group. In such a case, the
package could fail on restart. You
must manually validate that this
change is compatible with the
mount points.
cvm_activation_modecvm_activation_mode
cfs_mount_optionscfs_mount_pointcfs_mount_pointMount point
cfs_primary_policycfs_volumecfs_volume
cfs_mount_optionscfs_mount_options
cfs_primary_policycfs_primary_policy
ckpt_mount_optionsckpt_mount_pointckpt_mount_pointCheckpoint
ckpt_primary_policyckpt_nameckpt_name
ckpt_cfs_mount_pointckpt_cfs_mount_point
ckpt_mount_optionsckpt_mount_options
ckpt_primary_policyckpt_primary_policy
Snapshot parameters cannot be
modified online.
snapshot_mount_point
snapshot_name
snapshot_mount_point
snapshot_name
Snapshot
snapshot_cfs_mount_pointsnapshot_cfs_mount_point
snapshot_mount_optionssnapshot_mount_options
In addition to the above parameters, cvm_concurrent_dg_operations and
cfs_concurrent_mount_unmount_operations can also be modified online.
IMPORTANT: Modifying the cvm_disk_group, cfs_mount_point, ckpt_mount_point
or snapshot_mount_point is an offline operation. When you modify any of these parameters,
though cmapplyconf will succeed, it is considered that the existing disk group, mount point,
checkpoint mount point, or snapshot mount point are deleted and new ones are added respectively.
CAUTION: During online changes of modular CVM/CFS parameters, it is recommended not to
apply two CFS packages related to each other in the same cmapplyconf command. This is
because Serviceguard does not validate the inter-dependency existing between the packages
during cmapplyconf and as a result, it may cause the packages to fail.
216 Building an HA Cluster Configuration