IBM SG24-5131-00 Manuale Utente

Cluster Management and Administration 

To use the SMIT shortcuts to C-SPOC, type 

smit cl_lvm 

or 

smit cl_conlvm 

for 

concurrent volume groups. Concurrent volume groups must be varied on in 
concurrent mode to perform tasks.

The TaskGuide is a graphical interface that simplifies the task of creating a 
shared volume group within an HACMP cluster configuration. The TaskGuide 
presents a series of panels that guide the user through the steps of specifying 
initial and sharing nodes, disks, concurrent or non-concurrent access, volume 
group name and physical partition size, and cluster settings. The TaskGuide 
can reduce errors, as it does not allow a user to proceed with steps that 
conflict with the cluster’s configuration. Online help panels give additional 
information to aid in each step.

8.4.4.1  TaskGuide Requirements
TaskGuide is only available since HACMP for AIX version 4.3. Before you 
start the TaskGuide, make sure that:

  • You have a configured HACMP cluster in place

  • You are on a graphics capable terminal

8.4.4.2  Starting the TaskGuide
You can start the TaskGuide from the command line by typing: 

/usr/sbin/cluster/tguides/bin/cl_ccvg

,

 

or you can use the SMIT interface as 

follows:

1. Type 

smit hacmp

2. From the SMIT main menu, choose Cluster System Management -> 

Cluster Logical Volume Manager ->Taskguide for Creating a Shared 
Volume Group. After a pause, the TaskGuide Welcome panel appears.

3. Proceed through the panels to create or share a volume group.

In HACMP for AIX, you define each resource as part of a

 resource group. 

This allows you to combine related resources into a single logical entity for 
easier configuration and management. You then configure each resource 
group to have a particular kind of relationship with a set of nodes. Depending 
on this relationship, resources can be defined as one of three types: 
cascading, rotating, or concurrent access. You also assign a priority to each 
participating node in a cascading resource group chain.